Appendix L HHRA Combined
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Transcript of Appendix L HHRA Combined
Appendix L Human Health Risk Assessment
Contents
To be completed
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I
Contents
Contents.......................................................................................................................................... i
1 Introduction ..................................................................................................................... 1-1 1.1 Introduction ............................................................................................................ 1-1
1.2 Site Background ..................................................................................................... 1-1
2 Conceptual Site Model .................................................................................................. 2-1
3 Scope of Human Health Risk Assessment................................................................. 3-1
4 Hazard Assessment/Identification of COPCs ........................................................... 4-1 4.1 Data Summary ........................................................................................................ 4-1
4.1.1 Surface Sediment ........................................................................................ 4-1
4.1.2 Surface Water .............................................................................................. 4-2
4.1.3 Ambient Air ................................................................................................. 4-2
4.1.4 Fish Tissue ................................................................................................... 4-2
4.2 Data Evaluation ...................................................................................................... 4-3
4.3 Selection of COPCs ................................................................................................ 4-4
4.4 Constituents of Potential Concern ....................................................................... 4-5
5 Exposure Assessment ..................................................................................................... 5-1 5.1 Characterization of Exposure Setting .................................................................. 5-1
5.1.1 Physical Setting ........................................................................................... 5-1
5.1.2 Potentially Exposed Populations.............................................................. 5-1
5.2 Identification of Exposure Pathways .................................................................. 5-2
5.2.1 Contaminant Sources ................................................................................. 5-2
5.2.2 Release and Transport Mechanisms ........................................................ 5-2
5.2.3 Exposure Points and Exposure Routes .................................................... 5-3
5.2.4 Summary of Potential Exposure Pathways ............................................ 5-3
5.3 Quantification of Exposure ................................................................................... 5-3
5.3.1 Exposure Concentrations .......................................................................... 5-3
5.3.2 Estimation of Chemical Intakes ................................................................ 5-5
6 Toxicity Assessment ....................................................................................................... 6-1 6.1 Toxicity Information for Noncarcinogenic Effects ............................................ 6-2
6.2 Toxicity Information for Carcinogenic Effects ................................................... 6-2
6.3 Approach for Potential Mutagenic Effects ......................................................... 6-3
7 Risk Characterization ..................................................................................................... 7-1 7.1 Methods for Estimating Risks .............................................................................. 7-1
7.1.1 Noncarcinogenic Hazard Estimation ....................................................... 7-1
7.1.2 Carcinogenic Risk Estimation ................................................................... 7-1
7.1.3 Lead .............................................................................................................. 7-2
7.2 Risk Assessment Results ....................................................................................... 7-3
7.2.1 Recreational Adults .................................................................................... 7-4
7.2.2 Recreational Adolescents ........................................................................... 7-4
7.2.3 Recreational Children ................................................................................ 7-4
7.2.4 Recreational Receptors – Lifetime Carcinogenic Risks ......................... 7-5
7.2.5 Industrial Workers ..................................................................................... 7-6
7.2.6 Adult Residents ........................................................................................... 7-6
7.2.7 Child Residents ........................................................................................... 7-7
7.2.8 Child/Adult (Lifetime) Residents ............................................................ 7-7
7.2.9 Adult Anglers .............................................................................................. 7-8
7.2.10 Adolescent Anglers ..................................................................................... 7-9
7.2.11 Children of Anglers .................................................................................... 7-9
7.2.12 Anglers – Lifetime Carcinogenic Risks .................................................. 7-10
8 Uncertainty Assessment ................................................................................................. 8-1 8.1 Uncertainty in Data Evaluation and COPC Identification ............................... 8-1
8.2 Uncertainty Associated with Exposure Assessment ......................................... 8-2
8.3 Uncertainty Associated with Toxicity Assessment ........................................... 8-4
9 Human Health Risk Summary ..................................................................................... 9-1
10 References ....................................................................................................................... 10-1
Attachment
USEPA RAGS Part D and Supporting Tables
Tables
4-1 Summary of Data Quantitatively Used in HHRA 4-2 Chemicals of Potential Concern 5-1 WHO Dioxin-like PCB TEFs 5-2 Preparation/Cooking Loss Factor (PCF) for Fish 7-1 Summary of RME Cancer Risks and Hazard Indexes 7-2 Summary of CTE Cancer Risks and Hazard Indexes 7-3 PCBs, Mercury, and Arsenic in Canal and Reference Fish and Crab Tissue Samples 7-4 Summary of Total RME Cancer Risks for Recreational User and Angler 7-5 Summary of Total CTE Cancer Risks for Recreational User and Angler
Figures
2-1 Conceptual Exposure Model for Human Health Risk Assessment
1-1
SECTION 1
Introduction
1.1 Introduction
This baseline human health risk assessment (HHRA) for the Gowanus Canal Superfund Site is Appendix L to the remedial investigation (RI) report. The baseline HHRA was conducted to assess the nature, magnitude, and probability of potential harm to public health posed by environmental media containing hazardous substances released to the Gowanus Canal by past activities along the canal—specifically, the potential human health risks associated with direct contact with sediment and surface water in the canal, with ingestion of fish and crabs caught in the canal, with direct contact of sediment and surface water that overtops the canal during significant rainfall events, and with inhalation of emissions from the canal into the ambient air near the canal. The data evaluated in the HHRA are presented in Appendix I to the RI report and discussed in Section 4 of the RI report.
1.2 Site Background
The Gowanus Canal is located in Brooklyn, New York, a borough of New York City. The canal is connected to the Gowanus Bay in the Upper New York Bay and borders the neighborhoods of Red Hook, Cobble Hill, Carroll Gardens, and Park Slope. The waterfront adjacent to the canal is primarily commercial and industrial and currently consists of concrete plants, warehouses, and parking lots. There are five bridge crossings over the canal, at Union Street, Carroll Street, Third Street, Ninth Street, and Hamilton Avenue (Figure 1-1 of the RI). The Gowanus Expressway and the New York Subway also cross over the canal.
The Gowanus Canal, completed in the 1860s, was built to allow water access for industrial needs by bulkheading and dredging a tidal creek and wetland that was previously fished for oysters. The canal quickly became one of the nation’s busiest industrial waterways and was home to heavy industry such as gas works, coal yards, manufacturers of cement, manufacturers of soap, tanneries, paint and ink factories, machine shops, chemical plants, and oil refineries. It was also used as a repository of untreated industrial wastes, raw sewage, and surface water runoff for many decades. Although much of the industrial activity along the canal has stopped, high contaminant levels remain in the sediments. Despite ongoing pollution problems, some local residents use the Gowanus Canal for recreational purposes such as canoeing and swimming/diving, while others catch and eat fish and crabs.
The City built a “flushing tunnel” in 1911 to replace stagnant canal water with fresh, oxygen-rich water to improve water quality. The tunnel was in operation until the 1960s, when a mechanical failure caused it to shut down and the canal water became stagnant and thus polluted once again. The flushing tunnel was rehabilitated and reactivated in 1999 by the City’s Department of Environmental Protection (NYCDEP) to pump water from Buttermilk Channel to the Gowanus Canal using the 1911 technology. The flushing tunnel
was shut down by NYCDEP on July 19, 2010, for an extended period of facility improvements to modernize the technology and improve operations. In early 2010, an aeration pipe was installed within the canal to circulate superoxygenated water while the flushing tunnel is shut down. The aeration pipe began operation in early July 2010, and repairs were started on the flushing tunnel. The completion date is anticipated to be September 2014.
The canal is part of the New York-New Jersey Estuary, which the U.S. Environmental Protection Agency (USEPA) has designated an Estuary of National Significance under the Clean Water Act Section 320 and USEPA’s National Estuary Program.
2-1
SECTION 2
Conceptual Site Model
The conceptual site model (CSM) for human receptors presents an overview of site conditions, potential contaminant migration pathways, and potential exposure pathways to potential receptors. Figure 2-1 presents the preliminary CSM developed for the Gowanus Canal. Table 1 in the Attachment summarizes the potential exposure pathways and scenarios that were evaluated as part of the risk assessment.
There have been many sources of contamination to the canal, as discussed in Section 1. Although much of the industrial activity along the canal has stopped, high contaminant levels remain in the sediments.
The watershed drainage area of the Gowanus Canal is 1,758 acres, and the canal waterfront, or riparian area (defined as all blocks wholly or partially within ¼ mile of the canal), is occupied by commercial and industrial properties. The waterfront properties include concrete plants, warehouses, and parking lots. The riparian areas are classified as 18 percent residential, 6 percent park, and 76 percent mixed use. The entire watershed is 53 percent residential, 2 percent park, and 45 percent mixed use (NYCDEP, 2008).
Combined sewers (i.e., sewers that receive both sewage and stormwater flows) serve 92 percent of the Gowanus Canal watershed, while storm sewers serve 2 percent (NYCDEP, 2008). Direct runoff drains 6 percent of the watershed. Three stormwater outfalls also discharge to the canal. During significant rainfall events, the Gowanus Canal receives untreated discharges of combined sewage that exceed the capacity of the Red Hook and Owls Head wastewater pollution control plants (WPCPs); during such events, the canal has overflowed onto neighboring properties and streets. The area surrounding the canal is within a 100-year flood zone, indicating that there is a 1 percent annual chance of flooding in this area (FEMA, 2007).
Currently, the New York State Department of Health (NYSDOH) has fish-consumption advisories for the Upper Bay of the New York Harbor (north of the Verrazano Narrows Bridge), including the Gowanus Canal (NYSDOH, 2010). There are no warning signs concerning the fish-consumption advisories posted along the canal; however, New York City has posted caution signs at locations of combined sewer outfall (CSO) discharges that state during wet weather the CSOs may discharge harmful bacteria to the canal and people should not swim, boat, or fish during these periods. A fishing license is not required to fish in the Gowanus Canal. The main contaminants of concern identified in the NYSDOH health advisories for the waters of the Upper Bay of New York Harbor are polychlorinated biphenyls (PCBs) and dioxin in fish, and cadmium, dioxin, and PCBs in crab and lobster. The NYSDOH advisories include the following advice:
• For women under 50 years and children under 15 years: Do not eat any fish from these waters, eat no more than a few meals per year of crab meat from these waters, and avoid eating the crab tomalley (hepatopancras) and cooking liquid.
• For all others: Do not eat gizzard shad, white perch, or crab and lobster tomalley (hepatopancreas) and cooking liquid; eat only one meal per month of Atlantic needlefish, bluefish, rainbow smelt, and striped bass; eat no more than four meals per month of all other fish species and blue crab meat.
Potential current and future receptors at the Gowanus Canal may include recreational users, anglers, local residents, and nearby industrial workers. The recreational receptors may contact surface water and sediment through incidental ingestion and dermal absorption and inhale ambient air (volatile and particulate emissions from the surface water and sediment) at canal level while boating, fishing, and crabbing in the canal and potentially, although less common and less likely, while swimming/diving in the canal.
Swimming/diving in the canal, although it does occur (Gowanus Dredgers Canoe Club, 2010; New York Times, 2007; The Gowanus Lounge, 2007), is rare due to the general conditions of the canal, which are largely associated with CSO discharges to the canal. The anglers may also ingest fish or crabs caught in the canal, and share the fish and crabs with family members, including young children and adolescents. Residents and industrial workers may inhale ambient air (associated with volatile and particulate emissions from the canal) at street level. Also, it has been noted that during significant rainfall events the canal may overflow (about two to three times per year), and these residents and industrial workers may contact surface water and sediment (that has overtopped the canal) through incidental ingestion and dermal contact. If any of the sediment that has overtopped the canal is not washed away with rain, it is usually swept up by the local residents or workers and does not accumulate.
Future use of the area surrounding the canal is most likely to remain the same as current use (industrial and residential), with the potential for construction of new housing, which would result in additional residential populations living close to the canal.
3-1
SECTION 3
Scope of Human Health Risk Assessment
The primary objective of the baseline HHRA is to assess the potential current and future health risks from the contamination associated with the Gowanus Canal, in the absence of any remedial action. The risk assessment evaluates potential carcinogenic risks and noncarcinogenic hazards for a reasonable maximum exposure (RME) scenario consistent with the National Contingency Plan (NCP) (USEPA, 1994a) and Risk Assessment Guidance for Superfund (RAGS) guidance documents (USEPA, 1989, 1991, 2001a, 2004, 2009). The RME is the highest exposure that is reasonably expected to occur at a site (USEPA, 1989). The risk assessment comprises the following components:
• Hazard Assessment/Identification of Chemicals of Potential Concern—Identification of the contaminants found in the canal media and selection of the chemicals of potential concern (COPCs). COPCs represent that subset of the chemicals found at the canal that is expected to contribute the most to the risk estimates for the canal.
• Exposure Assessment—Identification of the potential pathways of human exposure and estimation of the magnitude, frequency, and duration of these exposures.
• Toxicity Assessment—Assessment of the potential adverse effects of the COPCs and compilation of the noncarcinogenic and carcinogenic toxicity values used for developing numerical risk estimates.
• Risk Characterization—Integration of the results of the hazard, exposure, and toxicity assessments to develop numerical estimates of health risks and characterize the potential health risks associated with potential exposure to site-related contamination.
• Uncertainty Assessment—Identification and discussion of sources of uncertainty in the risk assessment.
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4-1
SECTION 4
Hazard Assessment/Identification of COPCs
The identification of COPCs includes data collection, data evaluation, and data screening to identify those chemicals which would contribute the most to the total risk estimates associated with the site.
The data collection and evaluation involve gathering and reviewing the available site information and compiling a set of data for the purpose of conducting the baseline HHRA. Once the data collection and evaluation are completed, the established data set is further screened to focus the risk assessment efforts on the contaminants that need to be evaluated quantitatively in the risk assessment (data screening).
4.1 Data Summary
The purpose of this investigation is to evaluate the potential human health risks associated with contamination in surface sediment and surface water in the Gowanus Canal, in fish and crab caught in the canal, and in air from emissions from the canal media. Surface water and sediment samples collected from the canal, fish and crab tissue samples collected from the canal, and air samples collected at canal level and street level adjacent to the canal were evaluated in the baseline HHRA. Samples for all media have also been collected from reference areas. All of the data are included in Appendix I to the RI report. The samples evaluated in the baseline HHRA and the laboratory analysis performed for these samples are identified in Table 4-1. All data used in the risk assessment were validated in accordance with USEPA Region 2 Data Validation SOPs (USEPA Region 2, 1992, 2001b).
4.1.1 Surface Sediment
Surface sediment sampling activities were conducted within the Gowanus Canal and New York Harbor between June 17 and July 1, 2010. Surface sediment samples were collected over the length of the canal from 0 to 6 inches below the top of soft sediment. Some of the surface sediment samples were collected at locations where sediments are exposed at low-tide. Figures 2-3a through 2-3c in the RI report identify the locations where the surface sediment samples were collected. A total of 27 surface sediment samples were collected from the canal. Twelve of the samples were collected from “exposed” locations. All sediment samples were analyzed for Target Compound List (TCL) organics and Target Analyte List (TAL) metals (including mercury and cyanide), and these data were evaluated in the HHRA. Additionally, 19 sediment samples were analyzed for PCB congeners. These 19 locations were selected to provide data for areas with the greatest potential for human exposure (e.g., the canoe launch), to provide data in areas where high PCB concentrations were previously measured in sediment, and to provide spatial coverage throughout the canal. The PCB concentrations and risks were calculated based on total PCBs derived from congener data. Aroclor data were not used in the risk calculations. Ten surface sediment samples were also collected from the Gowanus Bay and Upper New York Bay, outside the mouth of the canal, to provide information for offsite conditions. Figure 2-4 of the RI identifies the reference surface sediment locations.
Two data groupings of surface sediment were evaluated in the HHRA. All of the surface sediment data were included in the data set to evaluate overflow sediment. Only the surface sediment samples collected from “exposed” locations were included in the data set used to evaluate contact with sediment during recreational use of the canal.
4.1.2 Surface Water
Surface water samples were collected from the length of Gowanus Canal during two sampling events representing dry-weather (June 19, 2010; 27 samples) and wet-weather (July 13, 2010; 26 samples) conditions. Figures 2-5a through 2-5c in the RI identify the locations where the surface water samples were collected. Ten offsite surface water samples were collected from the New York Harbor and Buttermilk Channel. Figure 2-6 identifies the offsite surface water sample locations. The surface water samples were collected from approximately 6 inches below the water surface. Surface water samples from all locations were analyzed for TCL organics and TAL metals (total and dissolved including mercury and cyanide). The total metals data were evaluated to estimate risks associated with metals in the HHRA, as the receptors would come in direct contact with total (rather than dissolved) concentrations in surface water.
4.1.3 Ambient Air
Air-sampling activities were conducted along the Gowanus Canal and at background locations during two sampling events. Air samples were collected between July 7 and 9, 2010, prior to the start of the canal oxygenation system. A second round of air sampling was conducted July 28 and 29, 2010, following the start-up of the oxygenation system. Air samples were collected at 10 locations along the length of the canal with two samples collected at each location, one at canal level and one at street level. Air samples were also collected at three background locations, with one sample at street level at each location. Figure 2-9 in the RI shows the locations of the air samples. Air samples along the canal were analyzed for VOCs and PAHs. Location 506 at the street level was also analyzed for PCBs during the first sampling event.
4.1.4 Fish Tissue
Fish and crab samples were collected in the Gowanus Canal and reference locations in Gowanus Bay and Upper New York Bay from June 21 through July 9, 2010. Fish and shellfish were collected in six reaches of the canal and in three reference areas (Figures 2-7 and 2-8 of the RI). Species targeted for sampling and evaluation in the HHRA included blue crab, striped bass, and white perch. Additional species caught and evaluated in the HHRA included American eel. These species were targeted on the basis of previous catch records for the canal, since they are typically consumed by humans, and because they represent different levels within the food web and have potentially different exposure within the ecosystem. These species were selected as the target fish/crab species for the canal in consultation with USEPA.
Both top-level predator (striped bass) and middle-level predator (white perch) fish tissue samples were collected and evaluated in the HHRA. The top-level predators represent species reflecting high-end bioaccumulation due to their position in the food web and are occasionally harvested and consumed by anglers. However, these fish tend to have a relatively large home range, and thus lower site fidelity, and a greater chance of
accumulating contaminants from offsite sources. The midlevel predator represents species most frequently harvested and consumed by anglers and likely retains greater site fidelity. However, the midlevel predator may not reflect maximum bioaccumulation due to its position in the food web. Additionally, because eel were caught during the sampling, and eel are consumed by humans, the eel were evaluated in the HHRA and represent bottom feeders.
Section 2.5 of the RI details the fish sampling, tissue preparation and grouping, and the preparation of fish samples for laboratory analysis. Twelve composite samples of blue crab, six composite samples of eel, five composite samples of striped bass, and two composite samples of white perch were included for quantitative evaluation in the HHRA.
Edible tissue (filet only) samples were analyzed to assess potential human health risks associated with ingestion of striped bass, white perch, and eel. For blue crab, edible portion samples and hepatopancreas samples were analyzed separately and combined to estimate human health risks. The hepatopancreas is a main component of a crab’s digestive system. It functions as both the liver and pancreas for the crab, and is involved in producing digestive enzymes and is responsible for filtering impurities from the crab’s blood. Some chemicals, such as PCBs and mercury, accumulate in the hepatopancreas. May and Burger (1996) reported that most crabbers in the Newark Bay Complex eat only cleaned crabs, and discard the hepatopancreas, with fewer than 3 percent of those surveyed eating the whole crab. The New Jersey Department of Environmental Protection (NJDEP) (2002) reported that 15 percent of the population surveyed in the Newark Bay Complex ate the hepatopancreas. It is possible that an individual may be exposed to the hepatopancreas during cooking unless actions are taken to remove the hepatopancreas from the crab prior to cooking. Based on the NJDEP report (NJDEP, 2002) and the potential for the hepatopancreas to be released during cooking, an individual may be exposed to both crab edible tissue and hepatopancreas. Therefore, the risk evaluation considered exposures to both the edible tissue and the hepatopancreas as the RME scenario. Risks from ingestion of the edible tissue only are discussed in the Uncertainty Assessment.
4.2 Data Evaluation
All of the data included in the risk assessment were evaluated to assess their reliability for use in the quantitative risk assessment. The following criteria were used to assess data usability:
• Estimated values flagged with a J or NJ qualifier were treated as unqualified detected concentrations.
• Data qualified with an R (rejected) were not used in the risk assessment.
• Data qualified with a B (blank contamination) were used in the risk assessment as if the constituents were not detected.
• For duplicate samples, the maximum concentration between the two samples was used as the sample concentration.
• Only the detected congeners were used to calculate the total PCB concentrations for each sample. Undetected congeners and congeners qualified with a B were not included in the calculations (see Section 5.3.1).
• Nondetected values (for all analytes except PCBs) were included in the risk assessment and exposure concentration calculation at the detection limit using ProUCL (USEPA, 2010a).
4.3 Selection of COPCs
The identification of COPCs is shown in Tables 2.1 through 2.13 in the Attachment. The methodology used to select the COPCs for quantitative evaluation in the baseline HHRA is outlined below:
• Sediment data were compared to the USEPA Regional Screening Levels (RSLs) for residential exposure to soil (USEPA, 2010b). RSLs that are based on the chemical’s noncarcinogenic effects (noted with an ‘’”N” next to the screening toxicity value on the COPC screening table) were divided by 10 to account for potential exposure to multiple constituents. RSLs that are based on carcinogenic effects (noted with a “C”‘’ next to the screening toxicity value on the COPC screening table) were used without adjustment because the target carcinogenic risk used in the RSL calculations is based on a 1 × 10–6 risk level. Constituents whose maximum detected concentration is below the screening level were not retained as COPCs. As discussed in Section 4.1.1, sediment samples were analyzed for both Aroclors and PCB congeners. Only the PCB congener data were evaluated in the risk assessment so that the risks associated with PCBs would not be double-counted in the HHRA. In accordance with EPA guidance (USEPA, 1996) for PCB congener analysis, the “dioxin-like” PCB toxicity equivalent (TEQ) concentration, the “non-dioxin-like” total PCB concentration, and the total PCB concentration were calculated for each sample using the methods discussed in Section 5.3.1. The dioxin-like PCB TEQ concentration was screened against the 2,3,7,8-TCDD RSL (which was re-calculated from the value on the RSL table using the 2,3,7,8-TCDD oral cancer slope factor from USEPA, 1995), the non-dioxin-like PCB concentration was screened against the Aroclor-1260 RSL, and the total PCB concentration was screened against the Aroclor-1254 RSL.
• Surface water data were compared to the USEPA tap water RSLs (USEPA, 2010b). RSLs that are based on the chemical’s noncarcinogenic effects were divided by 10 to account for potential exposure to multiple constituents. RSLs that are based on carcinogenic effects were used without adjustment because the target carcinogenic risk used in the RSL calculations is based on a 1 ×10–6 risk level. Constituents whose maximum detected concentration is below the screening value were not retained as COPCs.
• Fish tissue and crab sample data were compared to the USEPA Region 3 fish ingestion RSLs (USEPA Region 3, 2010c). RSLs that are based on noncarcinogenic effects were divided by 10 to account for exposure to multiple constituents. RSLs that are based on carcinogenic effects were used without adjustment. Constituents whose maximum detected concentrations are below the screening level were not retained as COPCs. In accordance with USEPA guidance (USEPA, 1996) for PCB congener analysis, the “dioxin-like” PCB TEQ concentration, the “non-dioxin-like” total PCB concentration,
and the total PCB concentration were calculated for each sample using the methods discussed in Section 5.3.1. The dioxin-like PCB TEQ concentration was screened against the 2,3,7,8-TCDD RSL (which was re-calculated from the value on the RSL table using the 2,3,7,8-TCDD oral cancer slope factor from USEPA, 1995), the non-dioxin-like PCB concentration was screened against the Aroclor-1260 RSL, and the total PCB concentration was screened against the Aroclor-1254 RSL.
• Air data were compared to the USEPA resident air RSLs (USEPA, 2010b). RSLs that are based on noncarcinogenic effects were divided by 10 to account for exposure to multiple constituents. RSLs that are based on carcinogenic effects were used without adjustment. Constituents whose maximum detected concentrations are below the screening level were not retained as COPCs.
• Essential human nutrients (calcium, magnesium, potassium, and sodium) that are toxic at concentrations significantly higher than those found in canal media, and whose concentrations in canal media are only slightly higher than the concentrations at which they occur naturally, were not retained as COPCs.
• Lead concentrations less than 0.015 mg/L in surface water (the Safe Drinking Water Act action level for lead in potable water) and less than 400 mg/kg in sediment (USEPA, 1994b) are considered adequately protective of human health under residential land-use conditions. Lead was retained as a COPC when exceeding these values. Lead was not detected in fish tissue.
• Constituents that were detected in less than 5 percent of the samples were not retained as COPCs (USEPA, 1989).
• Detected constituents classified as USEPA Class A carcinogens (known human carcinogens) were retained as COPCs for evaluation regardless of the comparison of the concentration to the screening level (USEPA, 1989).
• For constituents detected in canal samples that do not have established USEPA RSLs, the RSL values for surrogate constituents were selected based on guidance from the Superfund Technical Support Center and used in the COPC screening process.
4.4 Constituents of Potential Concern
Table 4-2 lists the chemicals that were identified as COPCs for site media:
• Surface sediment (exposed and near-shore)—11 PAHs [acenaphthene, benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene, chrysene, dibenz(a,h)anthracene, fluoranthene, indeno(1,2,3-cd)pyrene, naphthalene, and pyrene], one additional SVOC [bis(2-ethylhexyl)phthalate], PCBs, and 10 metals (aluminum, arsenic, cadmium, chromium, cobalt, copper, iron, lead, manganese, and vanadium).
• Surface sediment (overflow scenario)—the chemicals indicated above (exposed and near-shore) plus one additional PAH (fluorene).
• Surface water (dry event)—one VOC (benzene), four PAHs [benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene , and indeno(1,2,3-cd)pyrene], one additional
SVOC [bis(2-ethylhexyl)phthalate], and four metals (arsenic, chromium, copper, and selenium).
• Surface water (wet event and overflow)—the chemicals indicated above (dry event) plus four additional VOCs (1,4-dichlorobenzene, chloroform, ethylbenzene, and tetrachloroethene), two additional PAHs [dibenz(a,h)anthracene and naphthalene] , two additional metals (cobalt and lead), and one less metal (copper).
• Ambient air (street level)—benzene, chloroform, ethylbenzene and naphthalene.
• Ambient air (canal level)—the chemicals indicated above (street level) plus xylene.
• Fish tissue (striped bass)—two pesticides (p,p’-DDE and p,p’-DDT), PCBs, and three metals (arsenic, mercury, and selenium).
• Fish tissue (white perch)—PCBs and two metals (mercury and selenium)
• Fish tissue (eel)—six pesticides (alpha-chlordane, gamma-chlordane, dieldrin, p,p’-DDD, p,p’-DDE, and p,p’-DDT), PCBs, and six metals (arsenic, chromium, copper, cyanide. mercury, and selenium).
• Blue crab—five PAHs (benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, dibenz(a,h)anthracene, and indeno(1,2,3-cd)pyrene), PCBs, and three metals (arsenic, copper, and mercury).
5-1
SECTION 5
Exposure Assessment
Exposure assessment is the estimation of the likelihood, magnitude, frequency, duration, and routes of potential exposure to a chemical. Exposure refers to the potential contact of an individual (or receptor) with a chemical. Exposure can occur when contaminants migrate from a source to an exposure point, or when a receptor comes into direct contact with contaminated media.
The components of exposure assessment include the following:
•••• Characterization of exposure setting
•••• Identification of exposure pathways, and evaluation of whether they are complete
•••• Quantification of exposure
5.1 Characterization of Exposure Setting
Characterization of exposure setting consists of two parts: (1) characterization of the site with respect to its physical characteristics and (2) characterization of the site with respect to human populations at or near the site.
5.1.1 Physical Setting
The physical setting is described in the Section 2, the CSM. The Gowanus Canal is a 1.8-mile-long canal located in the New York City borough of Brooklyn, Kings County, New York. The canal borders several residential neighborhoods including Red Hook, Cobble Hill, Carroll Gardens, and Park Slope. The waterfront properties abutting the canal are primarily commercial and industrial.
The Gowanus Canal is a tidally influenced dead-end channel that opens to Gowanus Bay and Upper New York Bay. The canal experiences a semidiurnal tidal cycle (i.e., two high tides and two low tides each tidal day). The entire canal is classified as a saline tributary to Upper New York Bay, and the reach between the head of the canal and 22nd Street is classified as a “minor river, tidal tributary,” according to Title 6 of the New York Code of Rules and Regulations, Chapter X, Part 890. The only freshwater inflows to the canal are wet-weather CSO and stormwater discharges. Because of its narrow width, limited freshwater input, and enclosed upper end, the canal has low current speeds and limited tidal exchange with Gowanus Bay, though these are enhanced by additional circulation from the flushing tunnel when it is operating (NYCDEP, 2008).
5.1.2 Potentially Exposed Populations
As discussed above, the area around the Gowanus Canal consists of industrial, commercial, and residential properties. The Gowanus Canal itself may be used for recreational activities such as boating, swimming/diving, fishing, and crabbing (Gowanus Dredgers Canoe Club, 2010; New York Times, 2007; The Gowanus Lounge, 2007). Despite current fish advisories for the Upper New York Bay, which includes the Gowanus Canal, there have been observations of fishing/crabbing along the canal (The Gowanus Lounge, 2007). Although
most properties abutting the canal are commercial and industrial, there are residential neighborhoods within a few blocks of the canal. Therefore, potential current receptors for the surface water, sediment, air, and/or fish and crabs include recreationalists, anglers (and their families), local residents, and industrial workers. Table 1 in the Attachment identifies the potential receptors.
Future use of the canal and use of the surrounding area will likely remain the same as current use. Additionally, there have been discussions concerning construction of residential housing complexes adjacent to the canal. Therefore, the future potentially exposed populations are assumed to be the same as the current potentially exposed populations.
5.2 Identification of Exposure Pathways
An exposure pathway may be described as the physical course that a COPC takes from the point of release to a receptor. To be complete, an exposure pathway must have all of the following components present:
• A source
• A mechanism of a chemical release and transport
• An environmental transport medium
• An exposure point (receptor location)
• An exposure route (inhalation, dermal absorption, ingestion)
• A receptor or exposed population
In the absence of any one of these components, an exposure pathway is considered incomplete and, by definition, there is no risk or hazard. In some cases, a receptor may contact a source directly, eliminating the release and transport pathway.
The potential exposure pathways for Gowanus Canal are identified in the preliminary CSM (Figure 2-1) and Table 1 in the Attachment.
5.2.1 Contaminant Sources
The potential contaminant sources are identified in the preliminary CSM, in Section 2, and include past use of the areas abutting the canal by gas works, coal yards, manufacturers of cement, manufacturers of soap, tanneries, paint and ink factories, machine shops, chemical plants, and oil refineries. The canal was also used as a repository of untreated industrial wastes, raw sewage, and surface water runoff for many decades.
5.2.2 Release and Transport Mechanisms
The primary contaminant release and transport mechanism at the Gowanus Canal site appears to be the discharge from past industrial activities into the canal surface water, accumulation in the sediment, and bioaccumulation into fish and crabs. The transport pathway from emissions from surface water and sediment to ambient air will be evaluated in the risk assessment using the ambient air data collected along the canal. Additionally, the canal has been known to overflow during heavy precipitation events, resulting in transport of surface water and sediment out of the canal onto properties and streets adjacent to the canal. The surface water and sediment remains on the properties and streets adjacent to the canal only for short periods of time during the overflow and flooding events.
5.2.3 Exposure Points and Exposure Routes
Potential exposure points include the surface water and sediment within the canal, surface water and sediment temporarily deposited on properties adjacent to the canal when the canal overflows its banks during heavy precipitation events, ambient air at canal level and street level adjacent to the canal, and fish and crab caught in the canal. Table 1 in the Attachment lists all of the potential exposure pathways that were considered for evaluation in the risk assessment.
5.2.4 Summary of Potential Exposure Pathways
In summary, the potential pathways that were evaluated under the current/future land use scenario include the following:
•••• Adult, adolescent (12–18 years old), and child (1–6 years old) recreational: incidental ingestion and dermal contact with canal surface water (during both wet- and dry-sampling events); incidental ingestion and dermal contact with exposed and near-shore sediment in the canal; inhalation of ambient air at canal level (both before and during aeration system operation).
•••• Adult and adolescent (12–18 years old) angler and child (1–6 years old) of angler: ingestion of fish (striped bass, white perch, and eel) and crab caught in the canal.
•••• Adult and child (1–6 years) residents: inhalation of ambient air at street level (both before and during aeration system operation); incidental ingestion and dermal contact with canal overflow surface water (using surface water collected during wet events); incidental ingestion and dermal contact with sediment deposited adjacent to the canal (using surface sediment data) during canal overflow events.
•••• Adult industrial worker: inhalation of ambient air at street level (both before and during aeration system operation); incidental ingestion and dermal contact with canal overflow surface water (using surface water collected during wet events); incidental ingestion and dermal contact with sediment deposited adjacent to the canal (using surface sediment data) during canal overflow events.
5.3 Quantification of Exposure
Quantification of exposure involves estimating the exposure point concentration (EPC) and chemical intake.
5.3.1 Exposure Concentrations
The EPC is the estimated concentration at the point of contact. EPCs may be measured directly (i.e., surface water concentration) or calculated using fate and transport models. No fate and transport modeling was conducted for the Gowanus Canal risk assessment since data were collected at potential exposure points.
The EPCs for each COPC were calculated as the 95 percent upper confidence limit (UCL) of the mean concentration. The maximum detected concentration was used in place of the UCL as the EPC when the calculated UCL was greater than the maximum detected value or less than eight samples were available for the data grouping.
ProUCL, Version 4.00.05 (USEPA, 2010a), was used to calculate the UCLs and determine the data distribution. The data distribution identified was used to compute the most appropriate UCL for that specific data set. The recommendations in the ProUCL output file and outlined in the ProUCL model documentation were used to select the appropriate UCL.
In accordance with USEPA guidance (USEPA, 1996), EPCs were calculated separately for each medium (sediment and fish tissue) and data groupings for which PCB congeners were analyzed for (1) “dioxin-like” PCB TEQ concentrations, (2) “non-dioxin-like” total PCB concentrations, and (3) total PCB concentrations. These three concentrations were calculated for each sample using the methods discussed below. The concentrations were calculated using only the detected PCB congeners in each sample. Nondetected congeners and B-flagged congeners were not included in the individual sample sums. The calculations are included in Tables 2.8 Supplement A, 2.11 Supplement A, and 2.12 Supplement A in the Attachment for fish and crab, and for sediment, respectively. Detection limits are not shown on these tables for all of the dioxin congeners. The reporting limits are unreliable because during data validation the reporting limits were not provided correctly if the sample was reanalyzed or diluted. Appendix H presents the data quality evaluation. The uncertainties associated with the EPC calculation approach for PCBs are discussed in Section 8.
TEQ concentrations for “dioxin-like” PCBs were calculated for each sample in accordance with the World Health Organization (WHO) toxicity equivalency factor (TEF) approach (USEPA, 2010d). The purpose of using the WHO TEF approach is to adjust the relative carcinogenic potency of specific dioxin-like PCB congeners relative to 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD), the most potent dioxin congener. TEFs are published by WHO for mammals (including humans), fish, and wildlife. PCB TEQs were calculated using the mammal TEFs. Using the measured concentration values for each congener and the TEF for that congener, the TEQ for a mixture of PCB congeners in a specific sample is calculated as follows:
TEQ = Σ (TEFi × Ci)
where:
TEFi = Toxicity equivalency factor for congener i Ci = Concentration of congener i
Risks from the calculated dioxin-like PCB TEQ are therefore based on the toxicity factors for 2,3,7,8-TCDD. The TEFs used to calculate the dioxin-like PCB TEQ concentrations are provided in Table 5-1. Although there are also noncancer toxicity factors for 2,3,7,8-TCDD, there is greater uncertainty associated with evaluating the noncancer risk for the dioxin-like PCB TEQ concentrations using these values. Therefore, the evaluation of noncancer hazards associated with the dioxin-like PCB TEQ concentrations is presented in the uncertainty evaluation (Section 8).
The non-dioxin-like PCB concentrations (the sum of all detected non-dioxin-like PCB congeners) were also calculated and evaluated for carcinogenic risks using carcinogenic toxicity factors for total PCBs. The total PCB concentrations (the sum of all detected PCB congeners, not adjusted using TEFs) were also calculated for each sample and were used to evaluate noncarcinogenic effects.
Most arsenic present in fish and crab tissue is present in the organic form of arsenic (organoarsenical compounds), which is relatively nontoxic to humans and is excreted rapidly and unchanged in urine (U.S. Food and Drug Administration [FDA], 1993; ATSDR, 2007). Some regulatory agencies (for example, FDA) regulate arsenic in fish based on a default but conservative assumption that 10 percent of the total arsenic in fish tissue is potentially in the toxic (carcinogenic) form. Therefore, for this HHRA, it was assumed that 10 percent of the measured total arsenic in fish and crab tissue was in the inorganic form of arsenic. To account for this adjustment, the EPCs for arsenic used in the intake calculations are 10 percent of the total measured arsenic concentrations. The total measured arsenic concentrations are shown in Tables 3.8 through 3.11 in the Attachment, while 10 percent of the total measured values are shown in the Tables 7.8.RME through 7.10.RME and 7.7.CTE through 7.9.CTE in the Attachment.
5.3.2 Estimation of Chemical Intakes
The quantification of exposure is based on an estimate of the chronic daily intake (CDI), the average amount of the chemical contaminant entering the receptor’s body per day. Chemical intake estimates for the ingestion and dermal exposure pathways are generally expressed as follows:
CDI = C × CR × EF × ED BW × AT Where:
CDI = chronic daily intake (mg/kg-day) C = chemical concentration (mg/L, mg/kg) CR = contact rate (L/day, mg/day) EF = exposure frequency (days/year) ED = exposure duration (years) BW = body weight (kg) AT = averaging time (days)
For the dermal pathway, the contact rate usually incorporates the skin surface area in contact with the exposure medium (water or sediment), and an absorption factor. The intake equation for the dermal exposure pathway is shown in the Attachment, Tables 4.1 (RME and CTE) and 4.5 (RME and CTE) for sediment and Tables 4.2 (RME and CTE) and 4.6 (RME and CTE) for surface water.
Chemical exposure estimates for the inhalation pathway are generally expressed as follows:
EC = Ca × ET × EF × ED × CF AT Where:
EC = exposure concentration (mg/m3) Ca = chemical concentration in air (mg/m3) ET = exposure time (hours/day) EF = exposure frequency (days/year) ED = exposure duration (years) CF = conversion factor (day/24 hours) AT = averaging time (days)
The intake and exposure equations require exposure parameters that are specific to each exposure pathway. Many of the exposure parameters have default values, which were used for this assessment. These assumptions, based on estimates of body weights, media intake levels, and exposure frequencies and duration, are provided in USEPA guidance. Other assumptions (e.g., for the recreational scenarios) require consideration of location-specific information and were determined using professional judgment. Tables 4.1.RME through 4.6.RME in the Attachment present the exposure parameters that were used for the exposure scenarios that were evaluated in the risk assessment. RME scenario exposure parameters were compiled for all scenarios; central tendency exposure (CTE) parameters were compiled only for scenarios where the RME risk for an environmental medium is greater than ’USEPA’s noncarcinogenic hazard or carcinogenic risk target levels (target organ-specific hazard index (HI) >1.0, and excess lifetime cancer risk (ELCR) >1 × 10-4). The exposure parameters selected for each receptor are discussed below.
For the fish consumption evaluation, the fish ingestion rate for each of the species of fish evaluated was adjusted to a percentage of the total fish ingestion rate assumed, as reported in literature for the State of New York. The percentage of ingestion of each fish type was obtained from the 1991 New York State Angler Report (Connelly et al., 1992). It was assumed that eel represent bottom feeders with 44 percent of the total fish consumption, striped bass represent the intermediate level with 47 percent consumption, and white perch represent the remaining 9 percent. A 100 percent crab ingestion rate was assumed for blue crab. Burger (2002) found that individuals typically consumed either fish or crabs, and that those who did consume both fish and crabs had lower consumptions of each. Therefore, the total noncarcinogenic hazards and carcinogenic risks were not combined for consumption of both fish and crabs.
For the fish and crab ingestion scenarios, an additional exposure parameter was used in the CDI calculation (USEPA, 2000) for the CTE scenario. During cooking and fish preparation, concentrations of some lipophilic contaminants decrease. Therefore, if appropriate for the COPC, a preparation/cooking loss factor (PCF) was applied to the equation for the CTE assessment.
Appendix C of USEPA’s Guidance for Assessment Chemical Contaminant Data for Use in Fish Advisories, Volume 2: Risk Assessment and Consumption Limits (USEPA, 2000) summarizes many of the studies that have evaluated loss of PCBs and pesticides from fish during food preparation and cooking. A review of the available literature found the results range considerably, both between various cooking methods and within the same method. Cooking losses, expressed as percent loss based on total PCB mass before and after cooking, as high as 74 percent were reported in one study (Skea et al., 1979). Other studies reported net gains of PCBs (Moya et al., 1998; Armbruster et al., 1987). PCB losses from cooking may be a function of the cooking method (baking, frying, broiling, etc.), cooking duration, temperature during cooking, preparation techniques (i.e., trimmed vs. untrimmed, with or without skin), lipid content of the fish, the fish species, magnitude of the PCB contamination in the raw fish, the extent to which lipids separated during cooking are consumed, reporting method, and/or the experimental study design. Personal preferences for various preparation and cooking methods and other related habits (such as consuming pan drippings) may result in consumption of PCBs "lost" from the fish upon cooking.
A review of literature found that PCB cooking losses may range from 0 to 74 percent. Despite the wide range of cooking loss estimates, most PCB losses were between 10 and 40 percent. A value of 20 percent (midpoint of 0 – 40 percent) was selected as the CTE estimate for cooking loss. For the RME, a cooking loss factor was not used to include the possibility that pan drippings are consumed along with the fish. Table 5-2 identifies the PCFs used for the CTE evaluation.
Recreational Adult, Adolescent, and Child
The recreational adult, adolescent (ages 12–18), and child (ages 1–6) are individuals who may use the canal for boating, fishing, crabbing, or—although unlikely—swimming/diving and be exposed to the surface water, sediment, and air at canal level. It is assumed that the RME recreational user would engage in recreational activities in the canal for 1 day per week for one-half of the year, from May through October (26 days/year). For estimating the exposure to the surface water and sediment during recreational activities, swimming was assumed. It was assumed that the RME recreational user would be exposed to surface water and sediment for 2.6 hours during each exposure, the national average time spent swimming per swimming event (USEPA, 1989). It was assumed that the RME ingestion rate of sediment during swimming would be 50 percent of the resident ingestion rate of soil (50 mg/day for adults and adolescents and 100 mg/day for children [USEPA, 1991]). The RME ingestion rate of surface water was assumed to equal 0.05 L/day, the surface water ingestion rate for swimming activities (USEPA, 1989). For dermal exposure to sediment, it was assumed that the head, hands, forearms, lower legs, and feet could come into contact with the sediment (i.e., skin surface areas of 6,925 cm2 [adult], 10,470 cm2 [adolescent; includes full arms and legs since information was not available for this age group for forearms and lower legs alone], and 2,800 cm2 [child] [USEPA, 2004]). A sediment-to-skin adherence factor of 0.3 cm2, the average adherence factor for reed gatherers (USEPA, 2004), was selected for the adult, and a sediment-to-skin adherence factor of 0.2 cm2, the average adherence factor for children in wet soil (USEPA, 2004), was selected for the adolescent and child. For surface water, it was assumed the full body (18,000 cm2 [adult], 15,758 cm2 [adolescent], and 6,600 cm2 [child] [USEPA, 2004]) would be exposed. The default exposure durations of 24 years (adult), 6 years (adolescent ages 12–18), and 6 years (child ages 1–6) and default body weights of 70 kg (adult), 57 kg (mean body weight of girls and boys ages 12–18), and 15 kg (child ages 1–6) were used for exposure to all media.
For the CTE scenarios, the exposure frequency was assumed to be one-half of the RME exposure frequency (or 1 day every other week for one-half of the year). It was assumed that the CTE recreational user would be exposed to the surface water and sediment for one-half of the RME exposure time, or 1.3 hours during each exposure. It was also assumed that the ingestion rates of sediment and surface water would be half the RME values, or 25 mg/day for adults and adolescents and 50 mg/day for children for sediment, and 0.025 L/day for all recreational receptors for surface water. The CTE skin surface areas for exposure to surface water and sediment, and the sediment-to-skin adherence factors were assumed to be the same as the RME values. The total CTE exposure duration for the recreational receptor was assumed to be 9 years (USEPA, 1997), the 50th percentile value for living at one residence, therefore, for each of the receptors (adult, adolescent, and child) the exposure duration was assumed to be 3years. The default body weights of 70 kg (adult), 57 kg (mean body weight
of girls and boys from 12–18), and 15 kg (child ages 1–6) were used to evaluate CTE exposure to all media.
Adult Angler
It was assumed the adult angler would ingest the fish or crabs they catch in the canal. There is not a lot of published literature concerning ingestion rates of self-caught crabs. Burger (2002) reported results of an angler study for fish and crabs in the Newark Bay Complex, and has estimated a yearly consumption rate for self-caught crab by multiplying the number of crab meals eaten per month by the number of crabs eaten at each meal by the number of months per year crabs are caught. Burger assumed the average size of one crab is 70 g. In the Burger (2002) study, it was noted that most of the people interviewed mainly fished or mainly crabbed, and that more than 30 percent of the people who fished and crabbed in the Newark Bay Complex did not eat their catch. People reported crabbing for only 3 months of the year, which is why data from only the 3-month period were used to calculate the annual ingestion rate. This may underestimate the risks and hazards associated with crab ingestion if crabs are actually caught in the canal and eaten for longer than 3 months a year. The yearly consumption rate of self-caught crab estimated from Burger (2002) is 5,760 grams (g), or 16 g/day. A 95% UCL of the yearly consumption value was estimated on the basis of this to be 23 g/day, and an average yearly consumption value was estimated to be 16 g/day. The 95% UCL value was used for the RME scenario for crab ingestion, and the average value was used for the CTE scenario.
Burger (2002) also presented a yearly consumption rate of self-caught fish (based on the Newark Bay Complex study) of 8,210 g, or 22 g/day. This is similar to the value of 26 g/day, the 95th percentile recreational freshwater angler’s fish ingestion rate, in the Exposure Factors Handbook (USEPA, 1997) and is also similar to the 1991 New York State Angler Survey derived rate of 31.9 g/day (Connelly et al., 1992). The fish ingestion rate of 26 g/day (USEPA, 1997) was used for an RME adult. The mean recreational freshwater angler’s fish ingestion rate of 8 g/day (USEPA, 1997) was used for the CTE adult angler.
Adolescent Angler
It was assumed that the adolescent angler, ages 12–18 years, would fish or crab in the canal and ingest the fish and crabs caught in the canal. In addition to eating the fish or crab caught by an adult family member, several studies have found that children begin fishing at approximately 10 years of age (Connelly et al., 1992). There is not a lot of published literature concerning ingestion rates of self-caught crabs by adults, and even less for children. Therefore, the fish ingestion rate for the adolescent was estimated assuming that the intake for an adolescent is about two-thirds of that of an adult. This approach yields ingestion rates generally consistent with the limited information provided in USEPA’s Exposure Factors Handbook (USEPA, 1997). For adolescents ages 10-19 years, the 95th percentile intake is 26.8 g/day (USEPA, 1997), which is comparable with the 17 g/day used in the HHRA for adolescents ages 12-18 years. The RME ingestion rate of crabs by adolescents was assumed to be 15 g/day (two-thirds the adult rate).. Similarly, the CTE ingestion rate of fish by adolescents was assumed to be 5.3 g/day, and the CTE ingestion rate of crabs by adolescents was assumed to be 10.7 g/day.
Child of Angler
It was assumed that the child (ages 1–6 years) of an angler would ingest the fish and crabs caught by a parent/relative in the canal. There is not a lot of published literature concerning ingestion rates of self-caught crabs by adults, and even less for children. However, based on information presented in USEPA’s Exposure Factors Handbook (USEPA, 1997) for fish ingestion rates for children, children ingest about one-third the amount of fish that adults ingest. This approach yields ingestion rates generally consistent with the limited information provided in USEPA Exposure Factors Handbook (USEPA, 1997). According to Table 10-1 of the Exposure Factors Handbook (USEPA, 1997), the 95th percentile intake for children ages 0-9 years is 16.5 g/day, compared to the RME value used in the HHRA of 9 g/day for children ages 1-6 years. The RME ingestion rate of crabs by children was assumed to be 8 g/day. Similarly, the CTE ingestion rate of fish by children was assumed to be 2.7 g/day and the CTE ingestion rate of crabs by children was assumed to be 5.3 g/day.
Industrial Adult
The industrial adult is an individual who works near the canal and may be exposed to ambient air (collected at street-level stations) 250 days/year, 8 hours/day. This industrial adult may also be exposed to canal overflow surface water and sediment. It was conservatively assumed that the canal overflows three times per year and remains in overflow conditions 3 days during each overflow event, for a total of 9 days per year of exposure to the overflowed surface water and surface sediment. It is assumed that the adult industrial worker could be exposed to the overflow water and sediment 8 hours/day during these 9 days. It was assumed that the ingestion rate of the canal overflow sediment would be equal to the adult industrial worker ingestion rate of soil, or 100 mg/day (USEPA, 2002). The ingestion rate of surface water was conservatively assumed to equal 0.05 L/day, the ingestion rate of surface water for swimming activities (USEPA, 1989). For dermal exposure to sediment, it was assumed that the head, hands, and forearms could come into contact with the sediment, for a surface area of 3,300 cm2 (USEPA, 2004). For dermal exposure to surface water, it was assumed the head, hands, forearms, and lower legs could come into contact with the surface water, for a surface area of 5,700 cm2 (USEPA, 2004). A sediment-to-skin adherence factor of 0.2 cm2, the soil adherence factor for industrial workers (Exhibit 3-5 in USEPA, 2004), was selected. The default exposure duration of 25 years for an adult industrial worker and default body weight of 70 kg were used for exposure to media.
Residential Adult and Child
The residential adult and child are individuals who live near the canal and may be exposed to ambient air (collected at street-level stations) 350 days/year, 24 hours/day (RME scenario). This resident may also be exposed to canal overflow surface water and sediment. It was conservatively assumed that the canal overflows three times per year and remains in overflow conditions 3 days during each overflow event, for a total of 9 days per year of exposure to the overflowed surface water and surface sediment. It was assumed the RME ingestion rate of the canal overflow sediment would be equal to the resident ingestion rates of soil (100 mg/day [adult] and 200 mg/day [child] [USEPA, 2002]). The RME ingestion rate of surface water was assumed to equal 0.05 L/day, the surface water ingestion rate for exposure scenarios involving swimming activities (USEPA, 1989), and the RME exposure time for exposure to the surface water was assumed to equal 2.6 hours during each exposure, the national average time spent swimming per swimming event (USEPA, 1989).
For dermal exposure to sediment and the surface water, it was assumed that the head, hands, forearms, and lower legs could come into contact with the sediment, for a surface area of 5,700 cm2 (adult) and 2,800 cm2 (child, including feet) (USEPA, 2004). A sediment-to-skin adherence factor of 0.2 cm2, the average adherence factor for children in wet soil (USEPA, 2004), was selected. Default exposure durations of 24 years (adult) and 6 years (child) and default body weights of 70 kg (adult) and 15 kg (child) were used for exposure to all media.
For the CTE scenario, it was assumed the residential receptors would be exposed to ambient air 234 days/year (USEPA, 1993). It was assumed that the CTE resident would be exposed to the surface water for one-half of the RME exposure time, or 1.3 hours during each exposure. It was also assumed that the ingestion rates of sediment and surface water would be one-half the RME value, or 50 mg/day for adults 100 mg/day for children for sediment, and 0.025 L/day for both adults and children for surface water. The CTE skin surface areas for exposure to surface water and sediment and the sediment-to-skin adherence factors were assumed to be the same as the RME values. The CTE exposure duration for the residential receptor was assumed to be 9 years (USEPA, 1997), the 50th percentile value for living at one residence; therefore, the CTE exposure duration for the adult was assumed to be 3 years and the CTE exposure duration for the child was assumed to be 6 years, for a total residential exposure duration of 9 years. The default body weights of 70 kg (adult), and 15 kg (child ages 1–6) were used to evaluate CTE exposure to all media.
6-1
SECTION 6
Toxicity Assessment
Toxicity assessment defines the relationship between the magnitude of exposure and possible severity of adverse effects, and it weighs the quality of available toxicological evidence. Toxicity assessment generally consists of two steps: hazard identification and dose-response assessment. Hazard identification is the process of determining the potential adverse effects from exposure to the chemical and the type of health effect involved. Dose-response assessment is the process of quantitatively evaluating the toxicity information and characterizing the relationship between the dose of the constituent administered or received and the incidence of adverse health effects in the exposed population. Toxicity criteria (e.g., reference doses [RfDs], inhalation reference concentrations [RfCs], cancer slope factors [CSFs], and inhalation unit risk factors [IURs]) are derived from the dose-response relationship.
USEPA recommends that a tiered approach be used to obtain the toxicity values (RfDs, RfCs, CSFs, and IURs) that are used to estimate noncarcinogenic and carcinogenic risks (USEPA, 2003a). The hierarchy of toxicity value sources is the following:
1. Integrated Risk Information System (IRIS) (USEPA, 2010e)
2. Provisional Peer-Reviewed Toxicity Values (PPRTV)
3. Other USEPA and non-USEPA sources, including the National Center for Environmental Assessment (NCEA), Agency for Toxic Substances and Disease Registry (ATSDR), Health Effects Assessment Summary Tables (HEAST), California EPA (Cal EPA), and USEPA’s Office of Water
The use in an HHRA of toxicity values from sources other than IRIS increases the uncertainty of the quantitative risk estimates. Some of the COPCs elicit both systemic (noncarcinogenic) toxic effects and cancer (carcinogenic) effects. Because of this, these constituents are evaluated as both noncarcinogens and carcinogens. The health risks for carcinogenic and noncarcinogenic effects were estimated separately based on different toxicity values.
Chromium is a COPC for sediment, surface water, and fish tissue (eel). It was assumed that all of the chromium detected in these media is hexavalent chromium, or Cr(VI), both for determining if chromium was a COPC (comparing the total chromium concentrations to the Cr(VI) RSLs) and for calculating the risks associated with exposure to chromium in these media. Cr(VI) is unstable in the body (in biological tissues) and is ultimately reduced to trivalent chromium, or Cr(III), by a variety of reducing agents, including ascorbate and glutathione (ATSDR, 2008; USEPA, 2010e). Cr(VI) exerts toxicity through direct contact mechanisms rather than bioaccumulation to a critical concentration in tissue. Therefore, all of the chromium detected in fish tissue samples is most likely Cr(III). However, the Cr(VI) toxicity values were used to evaluate the risks associated with chromium in fish tissue and all media. An RfD and RfC for Cr(VI) are available in IRIS; however, IRIS does not include a
CSF or IUR for CR(VI). The CSF for CR(VI) used in the HHRA is the same one included on the RSL Table (USEPA, 2010b) from NJDEP.
6.1 Toxicity Information for Noncarcinogenic Effects
Noncarcinogenic health effects include a variety of toxic effects on body systems, ranging from toxicity to the kidneys to central nervous system disorders. The toxicity of a chemical is assessed through a review of toxic effects noted in short-term (acute) animal studies, long-term (chronic) animal studies, and epidemiological investigations.
USEPA (1989) defines the chronic RfD as a dose that is likely to be without appreciable risk of deleterious effects during a lifetime of exposure. Chronic RfDs are specifically developed to be protective for long-term exposure to a chemical or compound (for example, 7 years to a lifetime), and consider uncertainty in the toxicological database and sensitive receptors. Chronic RfDs were used to evaluate noncarcinogenic risks to all receptors evaluated in the risk assessment.
In the development of RfDs, all available studies examining the toxicity of a chemical following exposure are considered on the basis of scientific merit. The lowest dose level at which an observed toxic effect occurs is identified as the lowest observed adverse effect level (LOAEL), and the dose at which no effect is observed is identified as the no observed adverse effect level (NOAEL). Several uncertainty factors (UFs) may be applied to account for uncertainties such as limited data, extrapolation of data from animal studies to human exposures, or the use of subchronic studies to develop chronic criteria. These UFs range from 10 to 10,000, and are based on professional judgment. Consequently, there are varying degrees of uncertainty in the toxicity criteria, which range from 1 to 3,000 for the COPCs identified for this site.
USEPA-derived oral RfDs and inhalation RfCs, and associated UF and modifying factor (MF) values, available for the COPCs are presented in Tables 5.1 and 5.2 in the Attachment. The RfD for Aroclor 1254 was used to estimate the noncarcinogenic effects associated with exposure to total PCBs.
Per USEPA guidance, oral RfDs were adjusted from administered dose (oral) to absorbed dose (dermal) to evaluate dermal toxicity. When appropriate, the RfDs were adjusted using oral absorption factors (USEPA, 2004). This adjustment is shown in Table 5.1 in the Attachment.
6.2 Toxicity Information for Carcinogenic Effects
Potential carcinogenic effects are quantified as CSFs or IURs that convert estimated exposures directly to incremental lifetime carcinogenic risks.
CSFs and IURs may be derived from the results of chronic animal bioassays, human epidemiological studies, or both. Animal bioassays are usually conducted at dose levels that are much higher than are likely to be encountered in the environment. This design detects possible adverse effects in the relatively small test populations used in the studies. The actual risks from exposure to a potential carcinogen are not likely to exceed the estimated risks and are probably much lower or even zero. USEPA-derived CSFs and IURs are presented in the Attachment, Tables 6.1 and 6.2. The CSF for 2,3,7,8-TCDD (dioxin) was
used to estimate the carcinogenic risks associated with the dioxin-like PCBs and the CSF for total PCBs was used to estimate the carcinogenic risks associated with the non-dioxin-like PCBs.As was done for oral RfDs, oral CSFs were adjusted from administered dose (oral) to absorbed dose (dermal) to evaluate dermal toxicity. When appropriate, the CSFs were adjusted using oral absorption factors (USEPA, 2004). This adjustment is shown in Table 6.1 in the Attachment. The IRIS toxicity profile for PCBs (USEPA, 2010e) presents a tiered approach for evaluating carcinogenic risks associated with exposure to PCBs. IRIS recommends that the first tier upper-bound CSF of 2.0 (mg/kg-day)-1 be used to evaluate upper-bound risks estimates for exposures to PCBs through ingestion of fish and sediment, and dermal contact with sediment, and that the central-estimate of 1.0 (mg/kg/day)-1 be used to evaluate cancer risks for the CTE estimate.
6.3 Approach for Potential Mutagenic Effects
For COPCs that act via a mutagenic mode of action (MMOA), cancer risks were estimated using age-dependent adjustment factors (ADAFs), as is consistent with cancer guidelines and supplemental guidance (USEPA, 2005a, b). Consistent with the Superfund guidance on MMOA (http://www.epa.gov/oswer/riskassessment/sghandbook/chemicals.htm), the carcinogenic PAHs are considered to act via a MMOA. Additionally, chromium is also categorized as a chemical with a MMOA (McCarrol, et al., 2010). The calculation of cancer risk using ADAFs is presented in Tables 7s of the Attachment. As chemical-specific data are not available for the carcinogenic PAHs or chromium, default ADAFs, as included in the USEPA Region 3 memorandum Derivation of RBCs for Carcinogens That Act via a Mutagenic Mode of Action and Incorporate Default ADAFs (USEPA, 2006), were used for the MMOA evaluation. The default ADAFs used to adjust the CSFs are 10 for 0-2 year olds, 3 for 2-6 year olds, 3 used for 6-12 year olds, and 1 for 16-30 year olds. The CSF was multiplied by the appropriate ADAF to derive the age-specific CSF for a receptor to calculate the total carcinogenic risk. Additionally, the exposure factors for children 0–2 years old and 2–6 years old were assumed to be the same as the parameters for a child 0–6 years old, with the exception of the exposure duration, which was instead 2 years and 4 years, respectively. The exposure factors for the adult residential receptor were used for residents 6–16 years old and 16–30 years old, with the exception of the exposure durations, which were 10 years and 14 years, respectively. For the adolescent receptors, the exposure factors for the adolescents 12-16 years old and 16-18 years old were assumed to be the same as the parameters for an adolescent 12-18 years old, with the exception of the exposure duration, which was 4 years and 2 years, respectively.
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7-1
SECTION 7
Risk Characterization
Risk characterization combines the results of the previous elements of the risk assessment to evaluate the potential health risks associated with exposure to the COPCs. The risk characterization is then used as an integral component in risk management decision-making.
7.1 Methods for Estimating Risks
Potential human health risks are discussed independently for carcinogenic and noncarcinogenic effects because of the different toxicological endpoints, relevant exposure duration, and methods used to characterize risk. The methodology used to estimate noncarcinogenic hazards and carcinogenic risks are described below.
7.1.1 Noncarcinogenic Hazard Estimation
Noncarcinogenic health risks are estimated by comparing the calculated exposures to RfDs (or RfCs). The calculated intake divided by the RfD (or exposure concentration divided by the RfC) is equal to the hazard quotient (HQ):
HQ = Intake / RfD or Exposure Concentration / RfC
The intake and RfD (or exposure concentration and RfC) represent the same exposure route (i.e., oral intakes are divided by oral RfDs, inhalation exposure concentrations are divided by inhalation RfCs). An HQ that exceeds 1.0 (i.e., intake exceeds the RfD) indicates that there is a potential for adverse health effects associated with exposure to that constituent.
To assess the potential for noncarcinogenic health effects posed by exposure to multiple constituents, an HI approach is used (USEPA, 1986). This approach assumes that noncarcinogenic hazards associated with exposure to more than one constituent are additive (HI = sum of the HQs). Synergistic or antagonistic interactions between constituents are not considered. The HI may exceed 1.0 even if all of the individual HQs are less than 1. HIs may be added across exposure routes to estimate the total noncarcinogenic health effects to a receptor posed by exposure through multiple routes. If the HI is greater than 1, separate HIs are estimated for each target organ to assess whether the HI for a specific target organ is greater than 1. A target-organ-specific HI greater than 1 indicates that there is some potential for adverse noncarcinogenic health effects associated with exposure to the COPCs, possibly warranting remedial action. If the HI for each target organ does not exceed 1, noncarcinogenic hazards are not expected.
7.1.2 Carcinogenic Risk Estimation
The potential for carcinogenic effects due to exposure to site-related constituents is evaluated by estimating the ELCR, which is the incremental increase in the probability of developing cancer during one’s lifetime in addition to the probability of getting cancer associated with exposure to all non-site-related sources of carcinogens.
Carcinogenic risk is calculated by multiplying the intake by the CSF (or exposure concentration by the IUR).
ELCR = Intake × CSF or Exposure Concentration × IUR
The combined risk from exposure to multiple constituents was evaluated by adding the risks from individual constituents. Risks were also added across the exposure routes if an individual would be exposed through multiple routes.
As required under the NCP (USEPA, 1994a) "[f]or known or suspected carcinogens, acceptable exposure levels are generally concentration levels that represent an excess upper
bound lifetime cancer risk to an individual of between 10-4 to 10-6 using information on the relationship between dose and response." When a cumulative carcinogenic risk to a receptor under the assumed RME exposure conditions exceeds 1 in 10 thousand (i.e., 10-4 ELCR), the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) generally requires remedial action to reduce risks at the site.
7.1.3 Lead
Lead concentrations less than 0.015 mg/L in surface water (the Safe Drinking Water Act action level for lead in potable water) and less than 400 mg/kg in sediment (USEPA, 1994b) are considered adequately protective of human health under residential land-use conditions. Lead concentrations less than 800 mg/kg in sediment are considered adequately protective of human health under industrial land-use conditions. Lead was retained as a COPC when exceeding the residential values. Lead was identified as a COPC for exposed and near-shore surface sediment, surface sediment for the overflow scenario, and surface water during the wet event. Lead does not have available published toxicity factors, and therefore potential risks associated with lead are evaluated differently than the other COPCs. The toxicity of lead is evaluated by USEPA based on blood-lead uptake using a physiologically based pharmacokinetic model called the Integrated Exposure Uptake Biokinetic (IEUBK) model.
The IEUBK model is used to evaluate lead exposure to children. An interim approach to assessing risks associated with adult exposures to lead was developed by USEPA’s Technical Review Workgroup for Lead (USEPA, 2003b) and updated in 2005. This methodology is a variation of the IEUBK model. The adult lead methodology (ALM) is used to evaluate risks associated with nonresidential adult exposures to lead in soil (or sediment for this assessment). The model focuses on estimating fetal blood concentrations in women exposed to lead in soil (USEPA, 2003b). It was used in this risk evaluation to be protective of potentially sensitive receptors within the industrial worker population and recreational population that may be exposed to overflow sediment. Because the lead model is a probabilistic model, several of the USEPA default parameters are based on central tendency (i.e., average) values (USEPA, 2003b). Therefore, the arithmetic means for sediment concentration served as the input value for the soil (sediment) concentrations.
The exposure parameters used in the ALM for ingestion and exposure frequency are the same as those that were used to evaluate direct contact with overflow sediment by the industrial worker and direct contact with exposed and near-shore sediment by the recreational adult. The sediment ingestion rate of 100 mg/day and exposure frequency of 9 days/year was assumed for the adult industrial worker. For the recreational adult, a
sediment ingestion rate of 50 mg/day and an exposure frequency of 26 days/year were used.
The ALM uses different sets of geometric standard deviations (GSDs) and baseline blood lead levels based on different studies. The GSD is a measure of the inter-individual variability in blood lead concentrations in a population whose members are exposed to the same nonresidential environmental lead levels. The baseline blood lead concentration is intended to represent the best estimate of a reasonable central value of blood lead concentrations in women of child-bearing age that are not exposed to lead-contaminated nonresidential soil (sediment) or dust at the site (USEPA, 2003b, c). In this analysis, geometric means were used.
ALM spreadsheets provided by USEPA (version date June 21, 2009) were used to calculate blood lead concentrations for the industrial worker. The model results are expressed as the predicted geometric mean blood lead level for adults (that is, women of child-bearing age) and the corresponding 95th percentile fetal blood lead concentrations and the percent of the population potentially experiencing concentrations above 10 micrograms per deciliter (µg/dL), below which adverse manifestations are not expected.
The potential risks associated with residential/recreational exposures to lead are addressed using the IEUBK Lead Model for Windows, Version 1.1, Build 11 (USEPA, 1994c, 2010f). The IEUBK model was designed to provide predictions of the probability of elevated blood lead levels for children. This model addresses three components of environmental risk assessments: the multimedia nature of exposures to lead, lead pharmacokinetics, and significant variability in exposure and risk, through estimation of probability distributions of blood lead levels for children exposed to similar environmental concentrations. Although use of the IEUBK model to evaluate exposure to lead in the sediment and surface water for recreational and residential receptors is extremely conservative, there is currently no better method available. The arithmetic mean of the lead concentration in sediment and surface water was used with the default input parameters to represent site-specific exposures to lead.
7.2 Risk Assessment Results
The results of the risk characterization are presented below by receptor group. The risk estimates are calculated in the Attachment, Tables 7.1.RME through 7.10.RME and 7.1.CTE through 7.9.CTE, and summarized in the Attachment, Tables 9.1.RME through 9.10.RME and 9.1.CTE through 9.9.CTE. A summary of the RME results is shown in Table 7-1, and a summary of the CTE results is shown in Table7-2. CTE risks were calculated when the total RME HI to a receptor group exceeded 1.0 and/or the total RME ELCR exceeded 1 × 10-4. The risk estimates for each receptor group are summarized below and compared to USEPA’s target HI of 1 and target ELCR range of 1 × 10-6 to 1 × 10-4. Noncarcinogenic hazards less than 1 are below USEPA’s noncarcinogenic goal of protection of an HI of 1. Carcinogenic risks between or below 1 × 10-6 to 1 × 10-4 are within USEPA’s acceptable carcinogenic risk levels.
Noncarcinogenic hazards and carcinogenic risks are calculated for each of the receptors. However, carcinogenic risks are combined for the adult, adolescent, and child to estimate the carcinogenic risks to the recreational user, angler, and resident.
7.2.1 Recreational Adults
Tables 9.1.RME and 9.1.CTE in the Attachment summarize the HIs (and ELCRs, which are discussed in Section 7.2.4) for recreational adult exposure to Gowanus Canal exposed and near-shore surface sediment, Gowanus Canal surface water, and air at canal level. The higher of the risks and hazards estimated for the two surface water scenarios and the two ambient air scenarios were included in the total estimated risks and hazards for the receptor group.
• Total HI (RME) = 0.2, below USEPA’s target.
• Total HI (CTE) = 0.08, below USEPA’s target.
• Lead was identified as a COPC for sediment and surface water (wet-weather event only). Exposure to lead in sediment was evaluated using the adult lead model. The model results are presented in Table 11.1 (Attachment). The mean sediment lead concentration of 660 mg/kg results in geometric mean blood levels ranging from 1.1 to 1.6 microgram per deciliter (µg/dL) for women of child-bearing age. The corresponding 95th percentile fetal blood lead levels range from 2.6 to 4.9 µg/dL. The probabilities that the fetal blood lead levels exceed 10 µg/dL range from 0.005 to 0.5 percent. These values are less than the blood lead goal as described in the 1994 OSWER Directive (USEPA, 1994b) of no more than 5 percent of children (fetuses of exposed women) exceeding 10 µg/dL blood lead.
7.2.2 Recreational Adolescents
Table 9.2.RME in the Attachment summarizes the HIs (and ELCRs, which are discussed in Section 7.2.4) for recreational adolescent exposure to Gowanus Canal exposed and near-shore surface sediment, Gowanus Canal surface water, and air at canal level. The higher of the risks and hazards estimated for the two surface water scenarios and the two ambient air scenarios were included in the total estimated risks and hazards for the receptor group.
• Total HI (RME) = 0.2, below USEPA’s target.
• Total HI (CTE) = 0.1, below USEPA’s target.
• Lead was identified as a COPC for sediment and surface water (wet-weather event only). Exposure to lead in sediment was evaluated using the adult lead model, as discussed for the recreational adults. The probabilities that the fetal blood lead levels exceed 10 µg/DL range from 0.005 to 0.5 percent, which is less than the blood lead goal as described in the 1994 OSWER Directive (USEPA, 1994b) of no more than 5 percent of children (fetuses of exposed women) exceeding 10 µg/dL blood lead.
7.2.3 Recreational Children
Tables 9.3.RME and 9.3.CTE in the Attachment summarize the HIs (and ELCRs, which are discussed in Section 7.2.4) for recreational child exposure to Gowanus Canal exposed and near-shore surface sediment, Gowanus Canal surface water, and air at canal level. The higher of the risks and hazards estimated for the two surface water scenarios and the two ambient air scenarios were included in the total estimated risks and hazards for the receptor group.
• Total HI (RME) = 0.5, below USEPA’s target.
• Total HI (CTE) = 0.2, below USEPA’s target.
• Lead was identified as a COPC for sediment and surface water (wet-weather event only). Site-specific lead exposures were evaluated for recreational children using the IEUBK model. This calculation was based on the site-specific arithmetic mean concentration of lead detected in the sediment (660 mg/kg) and surface water (13 mg/L). The results of the model, along with the probability distribution plot are presented in Table 11.2 in the Attachment. The predicted geometric mean blood lead
level for a young child was 7.1 µg/dL, with 23 percent of the population potentially
experiencing concentrations exceeding 10 µg/dL, below which adverse manifestations are not expected. These results indicate that if a child was exposed to the sediment and surface water at levels consistent with residential exposure to soil and potable use of surface water, the percent of the exposed population with a blood lead level exceeding
10 µg/dL would be above the 5 percent level that USEPA considers being protective of human health. However, it is unlikely that a child recreational receptor would be exposed to the sediment and surface water at the levels estimated in the IEUBK model, and it is more likely there would be no adverse effects associated with exposure to the lead.
7.2.4 Recreational Receptors – Lifetime Carcinogenic Risks
Carcinogenic risks were estimated for the combined lifetime (young child/ adolescent/adult) recreational receptor, following USEPA risk assessment methodology. The total carcinogenic risk to a recreational receptor was calculated by adding the risks calculated for the young child, adolescent, and adult. The RME carcinogenic risks are summarized in Table 7-4, the CTE carcinogenic risks are summarized in Table 7-5, and the risks are discussed below. The higher of the risks estimated for the two surface water scenarios and the two ambient air scenarios were included in the total estimated risks.
• Total ELCR (RME) = 1 × 10-3, above USEPA’s target risk range. The risk is associated primarily with exposure to surface water (7 × 10-4) and sediment (7 × 10-4), and the risk drivers are carcinogenic PAHs. The carcinogenic PAHs were highest in the surface water samples collected at sampling locations 319 and 325 during the dry-weather sampling event and locations 309 and 319 during the wet-weather sampling event. The carcinogenic PAHs were highest (10 times higher than the next highest detection) in sediment sample 314, at the head of the 6th Street basin (see Figure 2-3a in the RI), and were therefore associated primarily with this location. The concentrations of the PAHs in the canal surface water during both dry- and wet-weather events and in the sediment were statistically significantly greater than in the reference area (see Sections 4.3.2 and 4.4.5 of the RI)
• Exposed and Near Shore Sediment ELCR (RME) = 7 × 10-4, above USEPA’s target risk range
• Surface water, dry weather event ELCR (RME) = 6 × 10-4, above USEPA’s target risk range
• Surface water, wet weather event ELCR (RME) = 5 × 10-4, above USEPA’s target risk range
• Air at canal level, prior to aeration system operation ELCR (RME) = 4 × 10-7, below USEPA’s target risk range
• Air at canal level, after to aeration system operation started ELCR (RME) = 4 × 10-7, below USEPA’s target risk range
• Total ELCR (CTE) = 3 × 10-4, above USEPA’s target risk range
• Exposed and Near Shore Sediment ELCR (CTE) = 1 × 10-4, above USEPA’s target risk range
• Surface water, dry weather event ELCR (CTE) = 1 × 10-4, above USEPA’s target risk range
• Surface water, wet weather event ELCR (CTE) = 9 × 10-5, within USEPA’s target risk range
7.2.5 Industrial Workers
Table 9.4.RME in the Attachment summarizes the HIs and ELCRs for industrial worker exposures to ambient air at street level and surface water and sediment associated with canal overflow. The higher of the risks and hazards estimated for the two ambient air scenarios were included in the total estimated risks and hazards for the receptor group.
• Total HI (RME) = 0.8, below USEPA’s target HI.
• Total ELCR (RME) = 8 × 10-5, within USEPA’s target risk range.
• Lead was identified as a COPC for sediment and surface water. Exposure to lead in sediment was evaluated using the adult lead model. The model results are presented in Table 11.3 of the Attachment. The mean sediment lead concentration of 533 mg/kg results in geometric mean blood levels ranging from 1.1 to 1.6 ug/dL for women of child-bearing age. The corresponding 95th percentile fetal blood lead levels range from
2.5 to 4.8 µg/dL. The probabilities that the fetal blood lead levels exceed 10 µg/DL range from 0.003 to 0.4 percent. These values are less than the blood lead goal as described in the 1994 OSWER Directive (USEPA, 1994b) of no more than 5 percent of children (fetuses of exposed women) exceeding 10 µg/dL blood lead.
7.2.6 Adult Residents
Tables 9.5.RME and 9.4.CTE, in the Attachment summarize the HIs for adult resident exposures to ambient air at street level and surface water and sediment associated with canal overflow. The higher of the hazards estimated for the two ambient air scenarios were included in the total estimated risks and hazards for the receptor group.
• Total HI (RME) = 1 (calculated HI value is 1.1), equals USEPA’s target of HI of 1. The HI is associated with inhalation of ambient air. The HIs for all target organs are below USEPA’s target, and therefore, the hazard is within USEPA acceptable levels.
• Surface water and sediment HIs (RME) are below 0.1, below USEPA’s target.
• Total HI (CTE) = 0.7, below USEPA’s target.
• Lead was identified as a COPC for sediment and surface water. Exposure to lead in sediment was evaluated using the adult lead model. The model results are presented in Table 11.3 in the Attachment. The mean sediment lead concentration of 533 mg/kg
results in geometric mean blood levels ranging from 1.1 to 1.6 µg/dL for women of child-bearing age. The corresponding 95th percentile fetal blood lead levels range from
2.5 to 4.8 ug/dL. The probabilities that the fetal blood lead levels exceed 10 µg/DL range from 0.003 to 0.4 percent. These values are less than the blood lead goal as described in the 1994 OSWER Directive (USEPA, 1994b) of no more than 5 percent of children (fetuses of exposed women) exceeding 10 µg/dL blood lead.
7.2.7 Child Residents
Tables 9.6.RME and 9.5.CTE in the Attachment summarize the HIs for child resident exposures to ambient air at street level and surface water and sediment associated with canal overflow. The higher of the hazards estimated for the two ambient air scenarios were included in the total estimated risks and hazards for the receptor group.
• Total HI (RME) = 1 (calculated HI value is 1.3), equals USEPA’s target HI of 1. The HI is associated with inhalation of ambient air. The HIs for all target organs are below USEPA’s target.
• Surface water and sediment HIs (RME) are below 0.3, below USEPA’s target.
• Total HI (CTE) = 0.8, below USEPA’s target.
• Lead was identified as a COPC for overflow sediment and surface water. Site-specific lead exposures were evaluated for recreational children using the IEUBK model. This calculation was based on the site-specific arithmetic mean concentration of lead detected in the sediment (533 mg/kg) and surface water (13 mg/L). The results of the model, along with the probability distribution plot are presented in Table 11.2 in the Attachment. The predicted geometric mean blood lead level for a young child was 6.1
µg/dL, with 14.9 percent of the population potentially experiencing concentrations
exceeding 10 µg/dL, below which adverse manifestations are not expected. These results indicate that if a child was exposed to the sediment and surface water at levels consistent with residential exposure to soil and potable use of surface water, the percent
of the exposed population with a blood lead level exceeding 10 µg/dL would be above the 5 percent level that USEPA considers to be protective of human health. However, it is unlikely that a child recreational receptor would be exposed to the sediment and surface water at the levels estimated in the IEUBK model, and it is more likely there would be no adverse effects associated with exposure to the lead.
7.2.8 Child/Adult (Lifetime) Residents
Carcinogenic risks were estimated for the combined lifetime (child/adult) resident, following USEPA risk assessment methodology. Tables 9.7.RME and 9.6.CTE in the Attachment summarize the ELCRs for lifetime resident exposures to ambient air at street level and surface water and sediment associated with canal overflow. The higher of the risks
estimated for the two ambient air scenarios were included in the total estimated risks and hazards for the receptor group.
• Total ELCR (RME) = 3 × 10-4, above USEPA’s target risk range. The ELCR is associated primarily with exposure to overflow sediment (2 × 10-4), with smaller contributions from exposure to overflow surface water (6 × 10-5) and ambient air after the aeration system started operating (4 × 10-5). The sediment risk drivers are carcinogenic PAHs, with highest concentrations in samples 314, at the head of the 6th Street basin, and 315, at the mouth of the 7th Street turning basin (see Figure 2-3a in the RI). PAH concentrations were variable in the reference area sediment, but concentrations observed in the canal were generally higher than those in the reference area (see discussion in Section 4.3.2 of the RI). Additionally, the statistical comparison of the PAH data from the canal and the reference area surface sediment indicated concentrations in the canal were statistically significantly greater than the reference area.
• Total ELCR (CTE) = 8 × 10-5, within USEPA’s target risk range.
7.2.9 Adult Anglers
Tables 9.8.RME and 9.7.CTE in the Attachment summarize the HIs (and ELCRs, which are discussed in Section 7.2.12) for angler adults who ingest fish and crab caught from the canal. Striped bass are representative of upper level predator fish, white perch are representative of middle level predator fish, and eel are representative of bottom feeders.
• Total Fish HI (RME) = 17, above USEPA’s target HI. The HIs for ingestion of striped bass and eel exceed USEPA’s target HI. The hazard is associated with PCBs, with smaller contributions (below 1) from mercury. About 70 percent of the total HI is contributed by assumed consumption of American eel. The average concentration of total PCBs in the eel from the canal is about two times higher than the average concentration of total PCBs in the reference samples (see Table 7-3 for average concentrations in canal and reference fish tissue samples). The average concentration of mercury in the eel from the canal samples is slightly lower than the average concentration in the eel from the reference samples.
• Total Crab HI (RME) = 3, above USEPA’s target HI. The hazard is associated with PCBs, with smaller contributions (below 1) from arsenic and mercury. The average concentration of PCBs in blue crab from the canal is almost twice the average concentration of PCBs in blue crab from the reference samples (Table 7-3); however, the average concentrations of arsenic and mercury in blue crab from the reference samples are slightly higher than the average concentrations in the canal samples.
• White perch HI (RME) is below USEPA’s target.
• Total Fish HI (CTE) = 2, above USEPA’s target HI. The hazard is primarily associated with PCBs in fish (mainly eel).
• Total Crab HI (CTE) = 2, above USEPA’s target HI. The hazard is primarily associated with PCBs.
7.2.10 Adolescent Anglers
Tables 9.9.RME and 9.8.CTE in the Attachment summarize the HIs (and ELCRs, which are discussed in Section 7.2.12) for adolescent anglers who ingest fish and crab caught from the canal. Striped bass are representative of upper level predator fish, white perch are representative of middle level predator fish, and eel are representative of bottom feeders.
• Total Fish HI (RME) = 13, above USEPA’s target HI. The hazard is associated with PCBs, with smaller contributions (below 1) from mercury (in striped bass and eel). The HIs for ingestion of striped bass and eel exceed USEPA’s target HI. About 74 percent of the total HI is contributed by assumed consumption of American eel. The average concentration of total PCBs in the eel from the canal is about two times higher than the average concentration of total PCBs in the reference samples (see Table 7-3 for average concentrations in canal and reference fish and crab tissue samples). The average concentration of mercury in the eel from the canal samples is slightly lower than the average concentration in the eel from the reference samples.
• Total Crab HI (RME) = 3, above USEPA’s target HI. The hazard is associated with PCBs, with smaller contributions (below 1) from arsenic and mercury. The average concentration of PCBs in blue crab from the canal is almost twice the average concentration of PCBs in blue crab from the reference samples. The average concentrations of arsenic and mercury in the blue crab from the reference samples are slightly higher than the average concentrations in the canal samples.
• White perch HI (RME) is below USEPA’s target.
• Total Fish HI (CTE) = 1 (calculated HI value is 1.3), equals USEPA’s target HI.
Total Crab HI (CTE) = 0.6, below USEPA’s target HI.
7.2.11 Children of Anglers
Tables 9.10.RME and 9.9.CTE in the Attachment summarize the HIs (and ELCRs, which are discussed in Section 7.2.12)for children of anglers who ingest fish and crab caught from the canal. Striped bass are representative of upper level predator fish, white perch are representative of middle level predator fish, and eel are representative of bottom feeders.
• Total Fish HI (RME) = 27, above USEPA’s target HI. The hazard is associated with PCBs, with smaller contributions (below 1) from mercury (in striped bass and eel). About 70 percent of the total HI is contributed by assumed consumption of American eel. The average concentration of total PCBs in the eel from the canal is about two times higher than the average concentration of total PCBs in the reference samples (see Table 7-3 for average concentrations in canal and reference fish and crab tissue samples). The average concentration of mercury in the eel from the canal samples is slightly lower than the average concentration in the eel from the reference samples.
• Total Crab HI (RME) = 5, above USEPA’s target HI. The hazard is associated with PCBs, with smaller contributions (below 1) from arsenic and mercury. The average concentration of PCBs in blue crab from the canal is almost twice the average concentration of PCBs in blue crab from the reference samples. The average
concentrations of arsenic and mercury in the blue crab from the reference samples are slightly higher than the average concentrations in the canal samples.
• Total Fish HI (CTE) = 3, above USEPA’s target HI, primarily associated with PCBs in eel.
• Total Crab HI (CTE) = 4, above USEPA’s target HI, primarily associated with PCBs.
7.2.12 Anglers – Lifetime Carcinogenic Risks
Carcinogenic risks were estimated for the combined lifetime (child/adolescent/adult) angler, following USEPA risk assessment methodology. The total carcinogenic risk to a angler was calculated by adding the risks calculated for the young child, adolescent, and adult. The RME carcinogenic risks are summarized in Table 7-4 and the CTE carcinogenic risks are summarized in Table 7-5, and are presented below. Striped bass are representative of upper level predator fish, white perch are representative of middle level predator fish, and eel are representative of bottom feeders.
• Total Fish ELCR (RME) = 7 × 10-4, above USEPA’s target risk range. The risk from ingestion of eel (bottom feeders) and striped bass (top level predators) exceed USEPA’s target risk range. The risk is associated primarily with ingestion of eel (74 percent). The risk drivers are PCBs. The dioxin-like PCBs and nondioxin-like PCBs contributed to the risk at similar risk levels. The average concentration of non-dioxin-like PCBs and dioxin-like PCB TEQs in the eel from the canal is almost two times higher than the average concentrations in the reference samples (see Table 7-3 for average concentrations in canal and reference fish and crab tissue samples).
• Total white perch (middle level predators) ELCR (RME) is within the target risk range .
• Total Crab ELCR (RME) = 3 × 10-4, above USEPA’s target risk range. The risk drivers are PCBs. The average concentration of non-dioxin-like PCBs and dioxin-like PCB TEQs in blue crab from the canal (see Table 7-3 for average concentrations in canal and reference fish and crab tissue samples) is almost twice the average concentration of PCBs in blue crab from the reference samples.
• Total Fish ELCR (CTE) = 2 × 10-5, within USEPA’s target risk range.
• Total Crab ELCR (CTE) = 6 × 10-5, within USEPA’s target risk range.
8-1
SECTION 8
Uncertainty Assessment
The risk measures used in HHRAs are not fully probabilistic estimates of risk, but are conditional estimates given that a set of assumptions about exposure and toxicity are realized. Thus, it is important to specify the assumptions and uncertainties inherent in the risk assessment to place the risk estimates in proper perspective (USEPA, 1989).
8.1 Uncertainty in Data Evaluation and COPC Identification
The sampling conducted along the canal for use in the HHRA focused on areas where contact with the canal is most likely to occur (shallow and exposed sediment and surface water and air samples collected from similar locations) to estimate the most realistic exposure and risk to potential receptors. Additional surface water and surface sediment samples were collected from locations where historic operations and discharges to the canal have most likely occurred. Only the surface sediment samples from the exposed and shallow areas were used to evaluate the recreational exposure risks, as this is the sediment that these receptors are most likely to contact. All of the surface water samples were included in the recreational scenario evaluations since the receptors could be exposed to the water throughout the canal while boating. All of the surface water and surface sediment samples were used to evaluate risks to the residential and industrial worker receptors associated with exposure to canal overflow water and sediment. Therefore, the available data were evaluated in the HHRA in data groupings for each receptor group to estimate the reasonable maximum exposures and risks.
The uncertainty associated with the data analysis is minimal, and all of the data were validated prior to being used in the HHRA. A data quality evaluation was performed on all analytical data evaluated in the HHRA, as discussed in Section 4.1 of the RI.
A few constituents (mainly pesticides) were not detected in any of the fish or crab tissue samples but had detection limits above the human health risk-based screening level. This may result in slightly underestimating the risk associated with ingestion of fish and crab. However, it should be noted that risks above acceptable levels were identified for the fish and/or crab tissue and risks were primarily associated with the PCBs detected in the fish and crab tissue. The pesticides detected in the fish and crab tissue did not contribute significantly to the risk.
A comparison of data collected from the canal to data collected from the reference locations was not used to identify the COPCs for the canal media. This may result in including COPCs related to background conditions in the risk estimates.
All of the canal data were screened against residential screening levels to select the COPCs. The use of residential screening levels is conservative, as not all the scenarios evaluated in the HHRA are residential (i.e., the industrial worker scenario). This may result in including COPCs with small contributions to overall risk estimates.
8.2 Uncertainty Associated with Exposure Assessment
The exposure factors used for quantifying exposure were conservative and reflect upper-bound assumptions. The reliability of the values chosen for the exposure factors also contributes substantially to the uncertainty of the resulting risk estimates. Because most of the exposure factors are upper-bound assumptions, the resulting risks are likely overestimates.
The most conservative recreational scenario (swimming) was used to evaluate potential exposure and risks for recreational adults, adolescents, and children. Based on the current conditions of the canal, it is likely that this is an overestimate of actual exposure to recreational receptors. Although possible, it is highly unlikely that a recreational receptor would swim in the canal for 26 days per year for 2.6 hours per day. Although the RME scenario indicated a slight risk above USEPA target levels, the CTE scenario (using more realistic but conservative assumptions of an exposure frequency of 13 days per year and an exposure time of 1.3 hours per day) indicated a risk within USEPA acceptable risk levels.
For the purposes of this risk assessment, the angler population is defined as those individuals who consume self-caught fish from the Gowanus Canal at least once per year, in the absence of a fishing ban or fish consumption advisories. Sources of uncertainty in the PCB concentrations in fish used in the assessment include the fact that concentrations were averaged over location, and weighted by species. The weighting of species intake in order to derive an average EPC in fish is a source of uncertainty because there are limited site- specific data available to estimate the species ingestion preferences (e.g., weighting factors).
Cancer risks and noncancer health hazards were not specifically quantified for subsistence anglers, or other subpopulations of anglers who may be highly exposed. Although there are no known distinct subpopulations that may be highly exposed, there is some degree of uncertainty as to whether these subpopulations have been adequately addressed in this risk assessment.
As described in Section 5.3.2, reported cooking losses vary considerably among the numerous studies reviewed. However, little information is available to quantify personal preferences among anglers for various preparation and cooking methods and other related habits (such as consumption of pan drippings). The assumption that there is no loss of PCBs during cooking or preparation, used in the RME cancer risk and noncarcinogenic hazard calculations, is conservative and could overestimate cancer risks and noncarcinogenic hazards.
The sediment/skin adherence factor represents the amount of sediment that adheres to skin and is available for dermal exposure. Because this value is likely to vary based on one’s activity, the values used for this parameter, which are estimates from single activities, are somewhat uncertain. For dermal contact with canal sediments, published adherence factors for adults gathering reeds and for children playing in wet soils were used as a surrogate for recreational children and adults and children. Although it is somewhat uncertain whether these scenarios are representative of contact with canal sediments, they appear to be a reasonable use of available data.
Commercial PCB mixtures tested in laboratory animals were not subject to prior selective retention of persistent congeners through the food chain, so there is a potential that
carcinogenic risks and noncarcinogenic hazards have been underestimated. However, since the CSFs are based on animal exposures to a group of PCB mixtures (i.e., Aroclor 1260, 1254, 1242, and 1016) that contain overlapping groups of congeners spanning the range of congeners most often found in environmental mixtures, this source of potential uncertainty is unlikely to have a significant impact.
The fact that any previous exposures (either background, or past consumption of contaminated fish) may still be reflected in an individual's body burden today is an additional source of uncertainty, and may result in an underestimate of noncarcinogenic health hazards.
The risk assessment assumed that people would consume both the combined muscle (edible portion) and hepatopancreas from blue crab. This may result in an overestimation of risk, as many crabbers do not consume the hepatopancreas, and some chemicals, such as PCBs and mercury, accumulate in the hepatopancreas. However, the hepatopancreas is small compared to the edible portion of the fish, and therefore, although concentrations may be higher in the hepatopancreas, it contributes a small amount of the total amount of crab consumed by the receptor. Therefore, it would not significantly change the total amount of contaminants consumed.
Dioxin-like PCB TEQ concentrations, non-dioxin-like PCB concentrations, and total PCB concentrations were calculated for each sample using detected PCB congeners only. In general, if the nondetected dioxin congeners were included in the sample concentration calculations, the non-dioxin-like PCB concentrations and the total PCB concentrations would be similar to those used in the risk assessment and the resulting risks would not differ significantly. The dioxin-like PCB TEQ concentrations would not always be similar, since if the most toxic congener (3,3’,4,4’,5-Pentachlorobiphenyl [126]) was not detected in a sample, inclusion of this congener at the detection limit times the TEF would contribute significantly to the dioxin-like PCB TEQ, even if it was not detected. Therefore, this may result in an underestimation of actual risk if this congener was present in the sample at a concentration below the reporting limit. However, when this congener was detected in a sample, it was generally J flagged as detected below the reporting limit, so it is unlikely that it would be present in the samples at concentrations similar to reporting limits, and it would likely be present at much lower concentrations and not contribute significantly to the dioxin-like PCB TEQ concentration for the sample. Additionally, congeners that were B qualified, indicating they were detected in a laboratory or field blank at a concentration similar to that in the sample, were not included in the concentration calculation. There were a number of samples with B-qualified congeners, which may result in an underestimation of risk if these congeners are present in the samples at a concentration below the blank contamination level. However, the B-qualified concentrations were generally below the reporting limits.
There are inherent limitations and uncertainties associated with estimating health risks on the basis of fish and crab consumption that should be considered when interpreting the results of this HHRA. Factors contributing to these uncertainties include the following:
• Game fish and blue crab ranges are not limited to the canal, but reflect cumulative uptake from all areas they traverse. Blue crab and some of the game fish species kept by anglers have relatively large home ranges, and those caught within the canal are likely, at least in part, to have inhabited areas outside the canal and therefore to have been
potentially exposed to contaminants not related to the canal. However, differences between canal and reference concentrations of PCBs in fish and crab tissue and sediment were identified, with canal media having higher concentrations.
Assumptions regarding fishing/crabbing frequency and fish/crab consumption rates are variable and affect the estimates of exposure and associated risk.
8.3 Uncertainty Associated with Toxicity Assessment
Uncertainty associated with the noncarcinogenic toxicity factors is included in Table 5.1 in the Attachment. The USEPA applies several UFs to extrapolate doses from animal studies to humans. The UFs for the COPCs range from 1 to 3,000. Therefore, there is a high degree of uncertainty in the noncarcinogenic toxicity criteria based on the available scientific data. The noncarcinogenic toxicity factors used in the HHRA are expected to be overestimates of actual toxicity.
CSFs and IURs developed by USEPA represent upper-bound estimates. Carcinogenic risks generated in this assessment should be regarded as an upper-bound estimate on the potential carcinogenic risks. The true ELCR is likely to be less than the predicted value (USEPA, 1989).
Use of provisional or withdrawn toxicity factors increases the uncertainty of the quantitative hazard and risk estimates. Provisional toxicity values (from Cal EPA, PPRTV, ATSDR, and NCEA) were used in the HHRA. The provisional values were used to provide a quantitative estimate rather than a merely qualitative risk discussion; however, USEPA has not fully promulgated these toxicity values.
The TEFs used to adjust the concentrations of the dioxin-like PCB congeners to TEQ of dioxin for the sediment and fish/crab also results in uncertainty in the risk assessment. In particular, although the TEF scheme and TEQ methodology is intended primarily for estimating exposure and risk through ingestion (primarily dietary intakes; USEPA, 2010c), it was also used to estimate exposure and risk through dermal contact. Additionally, not using the dioxin-like PCB congener TEQ to evaluate noncarcinogenic risks may underestimate the noncarcinogenic hazard associated with exposure to the PCBs. However, there is a lot of uncertainty with use of this process, and even more uncertainty with use of it for noncarcinogenic hazards since the TEFs are based on the relationship of the PCB congeners to the carcinogenic risks associated with dioxin. Although, there is a large degree of uncertainty associated with use of this method for noncarcinogenic-hazard evaluation, noncarcinogenic hazards were estimated as part of the uncertainty evaluation.
Noncarcinogenic hazards were calculated for the dioxin-like PCB TEQ concentrations for sediment and fish/crab using the RfD for 2,3,7,8-TCDD from the 1998 dioxin ATSDR toxicity profile. It should be noted that use of this RfD in itself presents a source of uncertainty, as the ATSDR toxicity profiles are a Tier 3 source of toxicity information. Noncarcinogenic hazards were calculated for the non-dioxin-like PCB concentrations using the RfD for Aroclor 1254. The sum of the noncarcinogenic hazards associated with the dioxin-like PCB TEQ concentrations and the non-dioxin-like PCB concentrations for all receptors for sediment and fish/crab are below 1 and in most cases are less than the noncarcinogenic hazards associated with the total PCB concentration, which were estimated using the total PCB concentrations and the RfD for Aroclor 1254. Therefore, evaluation of
the noncarcinogenic hazards for the dioxin-like PCB TEQ concentrations does not change the conclusions of the HHRA.
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9-1
SECTION 9
Human Health Risk Summary
The risk assessment was conducted to evaluate the potential human health risks associated with direct contact with sediment and surface water in the Gowanus Canal, with ingestion of fish and crabs from the canal, with direct contact of sediment and surface water that overtops the canal during significant rainfall events, and with inhalation of emissions from the canal into the ambient air near the canal.
Table 5 and Tables 9.1.RME through 9.10.RME in the Attachment summarize the RME ELCRs and HIs. Table 6 and Tables 9.1.CTE through 9.9CTE in the Attachment summarize the CTE ELCRs and HIs. Estimated HIs and ELCRs associated with exposure to canal-related media indicate the potential for unacceptable risks based on exposure to some media by some receptor groups. Risk estimates are summarized below:
Recreational receptors (adult, adolescent, and child) Exposures are to surface water and surface sediment (from exposed and near-shore
locations) in the canal and to ambient air at canal level while swimming in the canal for 26 days per year for 2.6 hours each day (very conservative assumptions given the nature of the canal and current CSO discharges).
HIs and ELCRs (RME) for inhalation of canal level air are within USEPA acceptable levels.
Total HI (RME) (all media combined) for all recreational receptors is within acceptable risk levels.
Total ELCR (RME) for recreational receptor (1 × 10-3) exceeds USEPA’s target risk range, primarily because of carcinogenic PAHs in surface water and sediment above background levels (see Sections 4.3.2 and 4.4.5 of the RI).
Total HI (CTE) for all recreational receptors are below USEPA’s target level.
Total ELCR (CTE) for recreational receptor (3 × 10-4) exceeds USEPA’s target levels and ranges; the CTE scenario may be more representative of likely exposure (although still conservative, at an assumed swimming frequency of 13 days per year for 1.3 hours per day). The risk is primarily associated with exposure to the young child (67 percent of the risk).
Exposure to lead in sediment by adult and adolescent recreational receptors was demonstrated not to be a concern using the adult lead model. The IEUBK model indicated potential adverse effects for children exposed to lead in sediment and surface water; however, the model is based on residential exposure to these media, including using the surface water as a potable water supply. Therefore, it is unlikely, based on a more-realistic recreational exposure, that there would be any adverse effects based on exposure to recreational children.
Industrial workers and residential receptors (adult and child)
9-2
Exposures are to ambient air at street level and surface water and sediment associated with canal overflow.
Total HI and ELCR (RME) for industrial workers are below or within USEPA’s target levels.
Total HIs (RME) for residential adults (Total HI equals 1, calculated value is 1.1) and for children (Total HI equals 1, calculated value is 1.3) do not exceed USEPA’s target level of 1. Inhalation of ambient air at street level contributes over 75 percent of the hazard. No target organ HIs exceed USEPA’s target levels.
HIs (RME) for exposure to surface water and sediment are within USEPA acceptable levels.
ELCRs (RME) for inhalation of street level air are within USEPA acceptable levels.
ELCR (RME) for lifetime (child/adult) resident (3 × 10-4) exceeds USEPA’s acceptable level primarily associated with carcinogenic PAHs in sediment (with a smaller contribution from surface water below 1 × 10-4) that were above background levels (see Sections 4.3.2 and 4.4.5 of the RI).
Exposure to lead in sediment by industrial workers was demonstrated not to be a concern using the adult lead model. The IEUBK model indicated potential adverse effects for children exposed to lead in sediment and surface water; however, the model is based on residential exposure to these media, including using the surface water as a potable water supply. Therefore, it is unlikely, on the basis of a more realistic exposure, that there would be any adverse effects based on recreational children’s exposure to lead.
Anglers (adult, adolescent, and child) Exposure is from ingestion of fish (striped bass [representative of top level
predators], white perch [representative of middle level predators], and eel [representative of bottom feeders]) and crab caught in the Gowanus Canal. Assuming that fishing/crabbing and ingestion of fish/crab from the Gowanus Canal occur at typical recreational angler fish consumption rates is very conservative given the nature of the canal and current CSO discharges to the canal.
Total Fish HIs (RME) (all fish types) for adults (17), adolescents (13), and children (27) exceed acceptable risk levels, primarily because of PCBs. The ingestion of striped bass and eel contributed higher HIs than ingestion of white perch (which for the child only did contribute to HI above 1). Additionally, mercury contributed to the HIs, at HIs above 0.1 but below 1.
Total Crab HIs (RME) for adults (37), adolescents (3), and children (5) exceed acceptable risk levels, primarily because of PCBs. Additionally, mercury and arsenic contributed to the HIs, at HIs above 0.1 but below 1.0.
Average PCB concentrations in canal samples are about twice the average PCB concentrations in reference samples; however, concentrations of PCBs in reference samples would also result in HIs and ELCRs above acceptable risk levels.
9-3
Total Fish ELCR (RME) for angler (7 × 10-4) exceeds USEPA’s target risk range, primarily because of PCBs.
Total Crab ELCR (RME) for angler (3 × 10-4) exceeds USEPA’s target risk range, primarily because of PCBs.
Total Fish HIs (CTE) for adults (2.0), adolescents (1.7), and children (3.2) exceed USEPA’s target level; these are associated with PCBs in fish and crab.
Total Crab HIs (CTE) for adults (2) and children (3) exceed USEPA’s target level; these are associated with PCBs. Total HI (CTE) for adolescents (Total HI equals 1, calculated as 1.3) does not exceed USEPA’s target level.
Total Fish ELCR (CTE) for angler receptor is within USEPA’s target range; the CTE scenario may be more representative of consumption of fish for the Gowanus Canal (although still conservative).
Total Crab ELCR (CTE) for angler receptor is within USEPA’s target range; the CTE scenario may be more representative of consumption of crab for the Gowanus Canal (although still conservative).
A primary contributor to fish consumption risk is PCBs in tissues of fish caught from the canal. This conclusion is supported by NYDOH’s decision to issue fish consumption advisories for the Upper Bay of the New York Harbor (north of the Verrazano Narrows Bridge), including the Gowanus Canal (NYSDOH, 2010) in part on the basis of PCB concentrations present in fish. Reference area average PCB fish concentrations are about one half the average concentrations identified in canal fish. However, these would also result in risks above acceptable risk levels.
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10-1
SECTION 10
References
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Date of Sample
Medium Sampling Location Sample Parameters
Surface sediment 6/23/2010 301 GC-SD301-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/17/2010 302 GC-SD302-0.0-0.52 VOCs, SVOCs, Pest, PCBs, Metals
6/17/2010 303 GC-SD303-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/17/2010 304 GC-SD304-0.0-0.5 VOCs, SVOCs, Pest, PCBs, Metals
6/17/2010 305 GC-SD305-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/17/2010 306 GC-SD306-0.0-0.5 VOCs, SVOCs, Pest, PCBs, Metals
6/17/2010 307A GC-SD307A-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/18/2010 307B GC-SD307B-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/23/2010 308A D-062310-0111,2 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/23/2010 308A GC-SD308A-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/24/2010 308B GC-SD308B-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/18/2010 309 GC-SD309-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/24/2010 310 GC-SD310-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/23/2010 311 GC-SD311-0.0-0.5 VOCs, SVOCs, Pest, PCBs, Metals
6/23/2010 312 GC-SD312-0.0-0.5 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/18/2010 313 GC-SD313-0.0-0.5 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/18/2010 314 GC-SD314-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/18/2010 314 D-06182010-011,2 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/18/2010 314 D-06242010-011,2 VOCs
6/18/2010 315 D-06182010-021 SVOCs, Pest, PCBs, PCB congeners, Metals
6/18/2010 315 GC-SD315-0.0-0.5 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/21/2010 316 GC-SD316-0.0-0.52 VOCs, SVOCs, Pest, PCBs, Metals
6/22/2010 317 GC-SD317-0.0-0.5 VOCs, SVOCs, Pest, PCBs, Metals
6/22/2010 318 GC-SD318-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/22/2010 319 GC-SD319-0.0-0.52 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/22/2010 320 GC-SD320-0.0-0.5 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/21/2010 321 GC-SD321-0.0-0.5 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/22/2010 322 GC-SD322-0.0-0.5 VOCs, SVOCs, Pest, PCBs, Metals
6/22/2010 323 GC-SD323-0.0-0.5 VOCs, SVOCs, Pest, PCBs, Metals
6/21/2010 324 GC-SD324-0.0-0.5 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/21/2010 324 D-06212010-011 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
6/21/2010 325 GC-SD325-0.0-0.5 VOCs, SVOCs, Pest, PCBs, PCB congeners, Metals
Surface water— 6/19/2010 301 GC-SW301-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
dry-weather event 6/19/2010 302 GC-SW302-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 303 GC-SW303-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 304 GC-SW304-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 305 GC-SW305-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 306 GC-SW306-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 307A GC-SW307A-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 307B GC-SW307B-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 308A GC-SW308A-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 308B GC-SW308B-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 309 GC-SW309-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 310 GC-SW310-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 311 GC-SW311-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 312 GC-SW312-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 312 D-06192010-021
VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 313 GC-SW313-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 314 GC-SW314-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 315 GC-SW315-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
TABLE 4-1
Summary of Data Quantitatively Used in HHRA
Gowanus Canal Remedial Investigation, Brooklyn, New York
1 of 22
Date of Sample
Medium Sampling Location Sample Parameters
TABLE 4-1
Summary of Data Quantitatively Used in HHRA
Gowanus Canal Remedial Investigation, Brooklyn, New York
Surface water— 6/19/2010 316 GC-SW316-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
dry-weather event 6/19/2010 316 D-06192010-031 VOCs, SVOCs, Pest, PCBs, Metals
(continued) 6/19/2010 317 GC-SW317-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 318 GC-SW318-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 318 D-06192010-041 VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 319 GC-SW319-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 320 GC-SW320-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 321 GC-SW321-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 322 GC-SW322-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 323 GC-SW323-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 324 GC-SW324-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
6/19/2010 325 GC-SW325-0.5-DW VOCs, SVOCs, Pest, PCBs, Metals
Surface water— 7/13/2010 301 GC-SW301-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
wet-weather event 7/13/2010 302 GC-SW302-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 303 GC-SW303-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 303 D-07132010-011 VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 304 GC-SW304-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 305 GC-SW305-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 306 GC-SW306-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 307A GC-SW307A-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 307B GC-SW307B-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 308A GC-SW308A-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 308B GC-SW308B-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 309 GC-SW309-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 310 GC-SW310-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 310 D-07132010-021 VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 311 GC-SW311-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 312 GC-SW312-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 313 GC-SW313-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 314 GC-SW314-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 315 GC-SW315-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 316 GC-SW316-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 317 GC-SW317-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 318 GC-SW318-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 319 GC-SW319-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 319 D-07132010-031 VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 320 GC-SW320-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 321 GC-SW321-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 322 GC-SW322-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 323 GC-SW323-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 324 GC-SW324-0.5-WW VOCs, SVOCs, Pest, PCBs, Metals
7/13/2010 324 D-07132010-04 VOCs, SVOCs, Pest, PCBs, Metals
2 of 22
Date of Sample
Medium Sampling Location Sample Parameters
TABLE 4-1
Summary of Data Quantitatively Used in HHRA
Gowanus Canal Remedial Investigation, Brooklyn, New York
Ambient air—canal level 7/8/2010 501 GC-AS501-C-1 VOCs, SVOCs
Event 1 (prior to start 7/8/2010 502 GC-AS502-C-1 VOCs, SVOCs
of aeration system) 7/8/2010 503 GC-AS503-C-1 VOCs, SVOCs
7/8/2010 504 GC-AS504-C-13 VOCs, SVOCs
7/8/2010 505 D-07082010-02-PAH1 VOCs, SVOCs
7/8/2010 505 D-07082010-01-VOC1 VOCs, SVOCs
7/8/2010 505 GC-AS505-C-1 VOCs, SVOCs
7/8/2010 506 D-07082010-02-VOC1 VOCs, SVOCs
7/8/2010 506 GC-AS506-C-1 VOCs, SVOCs
7/8/2010 507 GC-AS507-C-13 VOCs, SVOCs
7/8/2010 508 GC-AS508-C-1 VOCs, SVOCs
7/8/2010 509 GC-AS509-C-1 VOCs, SVOCs
7/8/2010 510 GC-AS510-C-1 VOCs, SVOCs
Ambient air—canal level 7/29/2010 501 GC-AS501-C-2 VOCs, SVOCs
Event 2 (after start 7/29/2010 502 GC-AS502-C-2 VOCs, SVOCs
of aeration system) 7/29/2010 503 GC-AS503-C-2 VOCs, SVOCs
7/29/2010 504 GC-AS504-C-2 VOCs, SVOCs
7/29/2010 505 GC-AS505-C-2 VOCs, SVOCs
7/29/2010 505 D-07292010-01 VOCs, SVOCs
7/29/2010 506 D-07292010-02-VOC1 VOCs
7/29/2010 506 GC-AS506-C-2 VOCs, SVOCs
7/29/2010 507 GC-AS507-C-2 VOCs, SVOCs
7/29/2010 508 GC-AS508-C-2 VOCs, SVOCs
7/29/2010 509 GC-AS509-C-2 VOCs, SVOCs
7/29/2010 510 GC-AS510-C-2 VOCs, SVOCs
Ambient air—street level 7/9/2010 501 GC-AS501-S-1 VOCs, SVOCs
Event 1 (prior to start 7/8/2010 502 GC-AS502-S-1 VOCs, SVOCs
of aeration system) 7/8/2010 503 GC-AS503-S-1 VOCs, SVOCs
7/8/2010 504 D-07082010-01-PAH1 SVOCs
7/8/2010 504 GC-AS504-S-1 VOCs, SVOCs
7/8/2010 505 GC-AS505-S-1 VOCs, SVOCs
7/8/2010 506 D-07082010-031 PCBs
7/8/2010 506 GC-AS506-S-1 VOCs, SVOCs, PCBs
7/8/2010 507 GC-AS507-S-1 VOCs, SVOCs
7/8/2010 508 GC-AS508-S-1 VOCs, SVOCs
7/8/2010 509 GC-AS509-S-1 VOCs, SVOCs
7/8/2010 510 GC-AS510-S-1 VOCs, SVOCs
Ambient air—street level 7/29/2010 501 GC-AS501-S-2 VOCs, SVOCs
Event 2 (after start 7/29/2010 502 GC-AS502-S-2 VOCs, SVOCs
of aeration system) 7/29/2010 503 GC-AS503-S-2 VOCs, SVOCs
7/29/2010 504 D-07292010-02-PAH1 SVOCs
7/29/2010 504 GC-AS504-S-2 VOCs, SVOCs
7/29/2010 505 GC-AS505-S-2 VOCs, SVOCs
7/29/2010 506 GC-AS506-S-2 VOCs, SVOCs
7/29/2010 507 GC-AS507-S-2 VOCs, SVOCs
7/29/2010 508 GC-AS508-S-2 VOCs, SVOCs
7/29/2010 509 GC-AS509-S-2 VOCs, SVOCs
7/29/2010 510 GC-AS510-S-2 VOCs, SVOCs
3 of 22
Date of Sample
Medium Sampling Location Sample Parameters
TABLE 4-1
Summary of Data Quantitatively Used in HHRA
Gowanus Canal Remedial Investigation, Brooklyn, New York
Fish tissue— 10/18/2010 401 GC-TI401-SB-FI-1 Pest, Metals, PCB congeners
striped bass filet 10/18/2010 401 GC-TI401-SB-FI-2 Pest, Metals, PCB congeners
(representative of top- 10/21/2010 403 GC-TI403-SB-FI-1 Pest, Metals, PCB congeners
level predator fish) 10/22/2010 406 GC-TI406-SB-FI-1 Pest, Metals, PCB congeners
10/22/2010 406 GC-TI406-SB-FI-2 Pest, Metals, PCB congeners
Fish tissue— 10/18/2010 401 GC-TI401-WP-FI-1 Pest, Metals, PCB congeners
white perch filet 10/19/2010 401 GC-TI401-WP-FI-2 Pest, Metals, PCB congeners
(representative of middle-
level predator fish)
Fish tissue— 10/19/2010 402 GC-TI402-XAE-FI-1 Pest, Metals, PCB congeners
eel filet 10/19/2010 402 GC-TI402-XAE-FI-2 Pest, Metals, PCB congeners
(representative of 10/20/2010 403 GC-TI403-XAE-FI-1 Pest, Metals, PCB congeners
bottom feeder fish) 10/21/2010 403 GC-TI403-XAE-FI-2 Pest, Metals, PCB congeners
10/21/2010 403 GC-TI403-XAE-FI-3 Pest, Metals, PCB congeners
10/22/2010 406 GC-TI406-XAE-FI-1 Pest, Metals, PCB congeners
Crab 8/16/2010 401 GC-TI401-BC-ED-14 SVOCs, Pest, Metals, PCB congeners
8/16/2010 401 GC-TI401-BC-ED-24 SVOCs, Pest, Metals, PCB congeners
8/17/2010 402 GC-TI402-BC-ED-14 SVOCs, Pest, Metals, PCB congeners
8/17/2010 402 GC-TI402-BC-ED-24 SVOCs, Pest, Metals, PCB congeners
8/17/2010 403 GC-TI403-BC-ED-14 SVOCs, Pest, Metals, PCB congeners
8/17/2010 403 GC-TI403-BC-ED-24 SVOCs, Pest, Metals, PCB congeners
8/18/2010 404 GC-TI404-BC-ED-14 SVOCs, Pest, Metals, PCB congeners
8/18/2010 404 GC-TI404-BC-ED-24 SVOCs, Pest, Metals, PCB congeners
8/19/2010 405 GC-TI405-BC-ED-14 SVOCs, Pest, Metals, PCB congeners
8/19/2010 405 GC-TI405-BC-ED-24 SVOCs, Pest, Metals, PCB congeners
8/19/2010 406 GC-TI406-BC-ED-14 SVOCs, Pest, Metals, PCB congeners
8/20/2010 406 GC-TI406-BC-ED-24 SVOCs, Pest, Metals, PCB congeners
8/24/2010 401-402 GC-TI401-402-BC-HP-15 SVOCs, Pest, Metals, PCB congeners
8/25/2010 403-406 GC-TI403-404-405-406-BC-HP-25 SVOCs, Pest, Metals, PCB congeners
1. Duplicate sample.
2. Sediment sample used in recreational scenario for exposure to exposed and near shore surface sediment. All sediment samples used for overflow scenario.
3. Sample not used, volume not available to calculate µg/m3.
4. Edible tissue sample.
5. Hepatopancreas sample.
4 of 22
Surface Sediment (Exposed and Near-
Shore Sediment in Gowanus Canal) Surface Sediment Surface Water (Gowanus Canal) Ambient Air Fish
Canal overflow scenario Dry-weather event Canal level, pre-aeration system Striped bass
Acenaphthene Acenaphthene Benzene Benzene p,p'-DDE
Benzo(a)anthracene Benzo(a)anthracene Benzo(a)anthracene Chloroform p,p'-DDT
Benzo(a)pyrene Benzo(a)pyrene Benzo(a)pyrene Ethylbenzene Dioxin-like PCB TEQ
Benzo(b)fluoranthene Benzo(b)fluoranthene Benzo(b)fluoranthene Xylene, total Nondioxin-like PCB
Benzo(k)fluoranthene Benzo(k)fluoranthene Bis(2-ethylhexyl) phthalate Naphthalene Total PCB
Bis(2-ethylhexyl) phthalate Bis(2-ethylhexyl) phthalate Indeno(1,2,3-c,d)pyrene Arsenic
Chrysene Chrysene Arsenic Canal level, during aeration Mercury
Dibenz(a,h)anthracene Dibenz(a,h)anthracene Chromium system operation Selenium
Fluoranthene Fluoranthene Copper Benzene White perch
Indeno(1,2,3-c,d)pyrene Fluorene Selenium Chloroform Dioxin-like PCB TEQ
Naphthalene Indeno(1,2,3-c,d)pyrene Ethylbenzene Nondioxin-like PCB
Pyrene Naphthalene Wet-weather event Xylene, total Total PCB
Dioxin-Like PCB TEQ Pyrene (and surface water overflow) Naphthalene Mercury
Nondioxin-Like PCB Dioxin-Like PCB TEQ 1,4-Dichlorobenzene Selenium
Total PCB Nondioxin-Like PCB Benzene Street level, pre-aeration system Eel
Aluminum Total PCB Chloroform Benzene alpha-Chlordane
Arsenic Aluminum Ethylbenzene Chloroform Dieldrin
Cadmium Arsenic Tetrachloroethylene(PCE) Ethylbenzene gamma-Chlordane
Chromium Cadmium Benzo(a)anthracene Naphthalene p,p'-DDD
Cobalt Chromium Benzo(a)pyrene p,p'-DDE
Copper Cobalt Benzo(b)fluoranthene Street level, during aeration p,p'-DDT
Iron Copper Dibenz(a,h)anthracene system operation Dioxin-like PCB TEQ
Lead Iron Indeno(1,2,3-c,d)pyrene Benzene Nondioxin-like
Manganese Lead Naphthalene Chloroform Total PCB
Vanadium Manganese Arsenic Ethylbenzene Arsenic
Vanadium Chromium Naphthalene Chromium
Cobalt Copper
Lead Cyanide, total
Selenium Mercury
Selenium
Blue crab
Benzo(a)anthracene
Benzo(a)pyrene
Benzo(b)fluoranthene
Dibenz(a,h)anthracene
Indeno(1,2,3-cd)pyrene
Dioxin-like PCB TEQ
Nondioxin-like
Total PCB
Arsenic
Copper
Mercury
TABLE 4-2
Chemicals of Potential Concern
Gowanus Canal Remedial Investigation, Brooklyn, New York
PCB Congener WHO TEFa,b
3,3',4,4'-Tetrachlorobiphenyl (77) 0.0001
3,4,4',5-Tetrachlorobiphenyl (81) 0.0003
2,3,3',4,4'-Pentachlorobiphenyl (105) 0.00003
2,3,4,4',5-Pentachlorobiphenyl (114) 0.00003
2,3',4,4',5-Pentachlorobiphenyl (118) 0.00003
2,3',4,4',5'-Pentachlorobiphenyl (123) 0.00003
3,3',4,4',5-Pentachlorobiphenyl (126) 0.1
Congeners (156/157) 0.00003
2,3',4,4',5,5'-Hexachlorobiphenyl (167) 0.00003
3,3',4,4',5,5'-Hexachlorobiphenyl (169) 0.03
2,3,3',4,4',5,5'-Heptachlorobiphenyl (189) 0.00003
b USEPA. 2010c. Recommended Toxicity Equivalence Factors (TEFs) for Human Health Risk Assessments of
2,3,7,8-Tetrachlorodibenzo-p-dioxin and Dioxin-Like Compounds. Risk Assessment Forum, Washington, DC.
EPA/100/R-10/005.
a Van den Berg et al., 2006. The 2005 World Health Organization Re-evaluation of Human and Mammalian
Toxic Equivalency Factors for Dioxins and Dioxin-like Compounds. ToxSci Advance Acces. July 7.
TABLE 5-1
WHO Dioxin-like PCB TEFs
Gowanus Canal Remedial Investigation, Brooklyn, New York
COPC PCFa
Chlordane 33
Dieldrin 30
p,p'-DDD 30
p,p'-DDE 35
p,p'-DDT 30
PCBs 20
a USEPA. 2000. Guidance for Assessing Chemical Contaminant
Data for Use in Fish Advisories. Volume 2: Risk Assessment and
Fish Consumption Limits - Third Edition. Appendix C. Dose
Modifications Due to Food Preparation and Cooking. November.
EPA 823-B-00-008.
TABLE 5-2
Preparation/Cooking Loss Factor (PCF) for Fish
Gowanus Canal Remedial Investigation, Brooklyn, New York
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5 and <10-4
Chemicals with Cancer Risks
>10-6 and <10-5Hazard
Index
Chemicals
with HI>1
Ingestion 2E-05 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene 0.03
Dermal
Contact 1E-04
Benzo(a)pyrene,
Chromium
Benzo(a)anthracene, Benzo(b)fluoranthene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene, Nondioxin-like PCBs 0.13
Total 1E-04
Benzo(a)pyrene, Chromium
Benzo(a)anthracene,
Benzo(b)fluoranthene, Dibenz(a,h)anthracene, Indeno(1,2,3-c,d)pyrene, Non-
dioxin-like PCBs, Arsenic 0.2
Ingestion 2E-06 Arsenic 0.01
Dermal
Contact 2E-04 Benzo(a)pyrene Chromium
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene 0.03
Total 2E-04 Benzo(a)pyrene Chromium
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene,
Arsenic 0.04
Ingestion 2E-06 Arsenic 0.01
Dermal
Contact 1E-04
PCE, Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Chromium 0.02
Total 1E-04
PCE, Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene, Arsenic,
Chromium 0.03
Inhalation 2E-07 0.006
Total 2E-07 0.006
Ingestion 3E-07 0.007
Total 3E-07 0.007
All media 3E-04 0.2
TABLE 7-1
Summary of RME Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Surface sediment—exposed and near-shore sediment in
Gowanus Canal
Surface water—Gowanus Canal, dry-weather event
Recreational Adult
Surface water—Gowanus Canal, wet-weather event
Ambient air at canal level, after aeration system started
Ambient air at canal level, pre-aeration system operation
8 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5 and <10-4
Chemicals with Cancer Risks
>10-6 and <10-5Hazard
Index
Chemicals
with HI>1
TABLE 7-1
Summary of RME Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational
Ingestion 1E-05
Benzo(a)anthracene,
Benzo(a)pyrene 0.03
Dermal
Contact 8E-05 Benzo(a)pyrene
Benzo(a)anthracene, Benzo(b)fluoranthene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene, Chromium 0.2
Total 1E-04 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene, Dibenz(a,h)anthracene, Indeno(1,2,3-c,d)pyrene,
Chromium 0.2
Ingestion 9E-07 0.01
Dermal
Contact 1E-04 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene,
Chromium 0.03
Total 1E-04 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene,
Chromium 0.05
Ingestion 8E-07 0.01
Dermal
Contact 8E-05
Benzo(a)pyrene,
Dibenz(a,h)anthracene
PCE, Benzo(a)anthracene,
Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene,
Chromium 0.02
Total 8E-05
Benzo(a)pyrene,
Dibenz(a,h)anthracene
PCE, Benzo(a)anthracene,
Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene,
Chromium 0.04
Inhalation 6E-08 0.006
Total 6E-08 0.006
Ingestion 7E-08 0.007
Total 7E-08 0.007
All media 2E-04 0.2
Recreational
Adolescent
Ambient air at canal level, pre-aeration system operation
Ambient air at canal level, after aeration system started
Surface
sediment—exposed and near-shore sediment in Gowanus Canal
Surface water—Gowanus Canal, dry-weather event
Surface water—Gowanus Canal, wet-weather event
9 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5 and <10-4
Chemicals with Cancer Risks
>10-6 and <10-5Hazard
Index
Chemicals
with HI>1
TABLE 7-1
Summary of RME Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational
Ingestion 2E-04 Benzo(a)pyrene
Benzo(a)anthracene, Benzo(b)fluoranthene
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene, Arsenic, Chromium 0.3
Dermal Contact 2E-04 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene, Chromium
Dibenz(a,h)anthracene, Indeno(1,2,3-c,d)pyrene 0.2
Total 4E-04 Benzo(a)pyrene
Benzo(a)anthracene, Benzo(b)fluoranthene, Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene,
Chromium Benzo(k)fluoranthene, Arsenic 0.4
Ingestion 6E-06
Benzo(a)pyrene, Arsenic,
Chromium 0.05
Dermal
Contact 4E-04 Benzo(a)pyrene
Benzo(a)anthracene,
Indeno(1,2,3-c,d)pyrene 0.05
Total 4E-04 Benzo(a)pyrene
Benzo(b)fluoranthene,
Chromium
Benzo(a)anthracene,
Indeno(1,2,3-c,d)pyrene,
Arsenic 0.1
Ingestion 4E-06 Arsenic, Chromium 0.05
Dermal
Contact 3E-04 Benzo(a)pyrene
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene,
Chromium
PCE, Benzo(a)anthracene,
Benzo(b)fluoranthene 0.04
Total 3E-04 Benzo(a)pyrene
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene,
Chromium
PCE, Benzo(b)fluoranthene,
Arsenic 0.09
Inhalation 6E-08 0.01
Total 6E-08 0.01
Ingestion 7E-08 0.01
Total 7E-08 0.01
All media 8E-04 0.5
Recreational
Child
Surface sediment—exposed and near-shore sediment in
Gowanus Canal
Surface water—Gowanus Canal, dry-weather event
Surface water—Gowanus Canal, wet-weather event
Ambient air at canal level, pre-aeration system operationAmbient air at canal level, after aeration system started
10 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5 and <10-4
Chemicals with Cancer Risks
>10-6 and <10-5Hazard
Index
Chemicals
with HI>1
TABLE 7-1
Summary of RME Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational Inhalation 2E-05 Naphthalene Benzene, Chloroform 0.3
Total 2E-05 Naphthalene Benzene, Chloroform 0.3
Inhalation 3E-05 Naphthalene Benzene, Chloroform 0.7
Total 3E-05 Naphthalene Benzene, Chloroform 0.7
Ingestion 1E-05
Benzo(a)pyrene,
Benzo(a)anthracene 0.02
Dermal Contact 1E-05 Benzo(a)pyrene, Chromium 0.02
Total 2E-05 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Chromium 0.04
Ingestion 5E-07 0.01
Dermal
Contact 3E-05
PCE, Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene,
Chromium 0.006
Total 3E-05
PCE, Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene,
Chromium 0.02
All media 8E-05 0.8
Inhalation NA 0.5
Total NA 0.5
Inhalation NA 1.0
Total NA 1.0
Ingestion NA 0.02Dermal
Contact NA 0.03
Total NA 0.06
Ingestion NA 0.004Dermal
Contact NA 0.002
Total NA 0.006
All media NA 1.1
Industrial
Worker AdultAmbient air at street
level, pre-aeration system operation
Ambient air at street level, after aeration system started
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
Canal Overflow—surface water
Resident
AdultAmbient air at street
level, pre-aeration
system operation
Ambient air at street level, after aeration system started
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
Canal Overflow—surface water
11 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5 and <10-4
Chemicals with Cancer Risks
>10-6 and <10-5Hazard
Index
Chemicals
with HI>1
TABLE 7-1
Summary of RME Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational Inhalation NA 0.5
Total NA 0.5
Inhalation NA 1.0
Total NA 1.0
Ingestion NA 0.2Dermal
Contact NA 0.07
Total NA 0.3
Ingestion NA 0.02Dermal
Contact NA 0.005
Total NA 0.02
All media NA 1.3
Inhalation 2E-05 Naphthalene Benzene, Chloroform NA
Total 2E-05 Naphthalene Benzene, Chloroform NA
Inhalation 4E-05 Naphthalene Benzene, Chloroform NA
Total 4E-05 Naphthalene Benzene, Chloroform NA
Ingestion 1E-04
Benzo(a)anthracene,
Benzo(a)pyrene,
Benzo(b)fluoranthene
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene NA
Dermal
Contact 7E-05 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene,
Chromium NA
Total 2E-04 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Dibenz(a,h)anthracene
Indeno(1,2,3-c,d)pyrene,
Arsenic, Chromium NA
Ingestion 2E-06 NA
Dermal
Contact 6E-05
Benzo(a)pyrene,
Dibenz(a,h)anthracene
PCE, Benzo(b)fluoranthene, Indeno(1,2,3-c,d)pyrene,
Chromium NA
Total 6E-05
Benzo(a)pyrene,
Dibenz(a,h)anthracene
PCE, Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene,
Chromium NA
All media 3E-04 NA
Resident
ChildAmbient air at street
level, pre-aeration system operation
Ambient air at street level, after aeration system started
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
Canal Overflow—surface water
Resident
Child/AdultAmbient air at street
level, pre-aeration
system operation
Ambient air at street level, after aeration system started
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
Canal Overflow—surface water
12 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5 and <10-4
Chemicals with Cancer Risks
>10-6 and <10-5Hazard
Index
Chemicals
with HI>1
TABLE 7-1
Summary of RME Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational Ingestion 1E-04
Dioxin-Like PCB,
Nondioxin-Like PCB Arsenic 4.2 Total PCB
Total 1E-04
Dioxin-Like PCB, Nondioxin-Like PCB Arsenic 4.2 Total PCB
Ingestion 2E-05
Dioxin-Like PCB, Nondioxin-
Like PCB 0.8
Total 2E-05
Dioxin-Like PCB, Nondioxin-Like PCB 0.8
Ingestion 3E-04
Nondioxin-Like PCB, Dioxin-Like PCB Dieldrin, Chromium Arsenic 12 Total PCB
Total 3E-04
Nondioxin-Like PCB,
Dioxin-Like PCB Dieldrin, Chromium Arsenic 12 Total PCB
Ingestion 2E-04
Dioxin-Like PCB,
Nondioxin-Like PCB, Arsenic
Benzo(a)pyrene, Dibenz(a,h)anthracene 3.4 Total PCB
Total 2E-04
Dioxin-Like PCB,
Nondioxin-Like PCB,
Arsenic
Benzo(a)pyrene,
Dibenz(a,h)anthracene 3.4 Total PCB
Fish Total Risk 4E-04 17
Crab Total Risk 2E-04 3.4
Ingestion 2E-05
Dioxin-Like PCB, Nondioxin-
like, Arsenic 3.4 Total PCB
Total 2E-05
Dioxin-Like PCB, Nondioxin-
Like PCB, Arsenic 3.4 Total PCB
Ingestion 4E-06
Dioxin-Like PCB, Nondioxin-
Like PCB 0.7
Total 4E-06
Dioxin-Like PCB, Nondioxin-
Like PCB 0.7
Ingestion 7E-05
Dioxin-Like PCB,
Nondioxin-Like PCB Dieldrin, Chromium 9.4 Total PCB
Total 7E-05
Dioxin-Like PCB,
Nondioxin-Like PCB Dieldrin, Chromium 9.4 Total PCB
Ingestion 4E-05 Dioxin-Like PCB
Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Nondioxin-Like PCB, Arsenic 2.7 Total PCB
Total 4E-05 Dioxin-Like PCB
Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Nondioxin-Like PCB, Arsenic 2.7 Total PCB
Fish Total Risk 9E-05 13
Crab Total Risk 4E-05 2.7
Angler
AdolescentStriped Bass in
Gowanus Canal (top-
level predator fish)
White Perch in Gowanus Canal (middle-level predator fish)
Eel in Gowanus Canal (bottom feeder fish)
Blue Crab in Gowanus Canal
Angler AdultStriped Bass in
Gowanus Canal (top-
level predator fish)
White Perch in Gowanus Canal (middle-level predator fish)
Eel in Gowanus Canal (bottom feeder fish)
Blue Crab in Gowanus Canal
13 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5 and <10-4
Chemicals with Cancer Risks
>10-6 and <10-5Hazard
Index
Chemicals
with HI>1
TABLE 7-1
Summary of RME Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational
Ingestion 4E-05
Dioxin-Like PCB,
Nondioxin-Like PCB Arsenic 6.8 Total PCB
Total 4E-05
Dioxin-Like PCB,
Nondioxin-Like PCB Arsenic 6.8 Total PCB
Ingestion 8E-06
Dioxin-Like PCB, Nondioxin-Like PCB 1.4 Total PCB
Total 8E-06
Dioxin-Like PCB, Nondioxin-
Like PCB 1.4 Total PCB
Ingestion 2E-04
Dioxin-Like PCB,
Nondioxin-Like PCB,
Chromium Dieldrin, Arsenic 19 Total PCB
Total 2E-04
Nondioxin-Like PCB,
Chromium Dieldrin, Arsenic 19 Total PCB
Ingestion 9E-05
Dioxin-Like PCB, Nondioxin-Like PCB,
Benzo(a)pyreneDibenz(a,h)anthracene, Arsenic 5.5 Total PCB
Total 9E-05
Dioxin-Like PCB,
Nondioxin-Like PCB,
Benzo(a)pyrene
Dibenz(a,h)anthracene,
Arsenic 5.5 Total PCB
Fish Total Risk 2E-04 27
Crab Total Risk 9E-05 5.5
NA—Not applicable, pathway incomplete.
Receptor Total risks and hazards for recreational receptors includes sum of exposed and near-shore sediment, maximum of dry event and wet event surface water,
and maximum of air prior to aeration system operation and after aeration system started.
Receptor Total risks and hazards for residential and industrial receptors includes maximum between air prior to and after aeration system operation,
and surface water, and sediment.
Angler ChildStriped Bass in
Gowanus Canal (top-level predator fish)
White Perch in Gowanus Canal (middle-level predator fish)
Eel in Gowanus Canal (bottom feeder fish)
Blue Crab in Gowanus Canal
14 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5
and <10-4
Chemicals with Cancer
Risks >10-6
and <10-5
Hazard
Index
Chemicals
with HI>1
Ingestion 6E-07 7E-03
Dermal
Contact 7E-06 Benzo(a)pyrene 7E-02
Total 8E-06 Benzo(a)pyrene 7E-02
Ingestion 3E-08 1E-03Dermal
Contact 8E-06 Benzo(a)pyrene 7E-03
Total 8E-06 Benzo(a)pyrene 9E-03
Ingestion 3E-08 1E-03
Dermal
Contact 5E-06 Benzo(a)pyrene 6E-03
Total 5E-06 Benzo(a)pyrene 7E-03
All media 2E-05 8E-02
Ingestion 2E-06 Benzo(a)pyrene 9E-03
Dermal
Contact 3E-05 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Chromium 8E-02
Total 3E-05 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Dibenz(a,h)anthracene,
Chromium 9E-02
Ingestion 6E-08 2E-03
Dermal
Contact 3E-05 Benzo(a)pyrene
Benzo(b)fluoranthene,
Chromium 8E-03
Total 3E-05 Benzo(a)pyrene
Benzo(b)fluoranthene,
Chromium 1E-02
Ingestion 5E-08 2E-03
Dermal
Contact 2E-05
Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene 6E-03
Total 2E-05
Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene 8E-03
All media 5E-05 1E-01
TABLE 7-2
Summary of CTE Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational
AdultSurface
sediment—exposed and
near-shore sediment in
Gowanus Canal
Surface water—Gowanus Canal, dry-weather event
Surface water—Gowanus Canal, wet-weather event
Recreational
Adolescent
Surface
sediment—exposed and
near shore sediment in
Gowanus Canal
Surface water—Gowanus Canal, dry-weather event
Surface water—Gowanus Canal, wet-weather event
15 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5
and <10-4
Chemicals with Cancer
Risks >10-6
and <10-5
Hazard
Index
Chemicals
with HI>1
TABLE 7-2
Summary of CTE Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational
Ingestion 4E-05 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene,
Chromium 6E-02
Dermal
Contact 7E-05 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene,
Chromium 8E-02
Total 1E-04 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene,
Chromium 1E-01
Ingestion 5E-07 7E-03
Dermal
Contact 1E-04 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene,
Chromium 1E-02
Total 1E-04 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene,
Chromium 2E-02
Ingestion 3E-07 6E-03
Dermal
Contact 7E-05
Benzo(a)pyrene,
Dibenz(a,h)anthracene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene,
Chromium 1E-02
Total 7E-05
Benzo(a)pyrene,
Dibenz(a,h)anthracene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Indeno(1,2,3-c,d)pyrene,
Chromium 2E-02
All media 2E-04 2E-01
Recreational
Child
Surface
sediment—exposed and
near-shore sediment in
Gowanus Canal
Surface water—Gowanus Canal, dry-weather event
Surface water—Gowanus Canal, wet-weather event
16 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5
and <10-4
Chemicals with Cancer
Risks >10-6
and <10-5
Hazard
Index
Chemicals
with HI>1
TABLE 7-2
Summary of CTE Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational Inhalation NA 3E-01
Total NA 3E-01
Inhalation NA 7E-01
Total NA 7E-01
Ingestion NA 6E-03Dermal
Contact NA 2E-02
Total NA 2E-02
Ingestion NA 5E-04Dermal
Contact NA 6E-04
Total NA 1E-03
All media NA 7E-01
Inhalation NA 3E-01
Total NA 3E-01
Inhalation NA 7E-01
Total NA 7E-01
Ingestion NA 6E-02Dermal
Contact NA 4E-02
Total NA 9E-02
Ingestion NA 2E-03Dermal
Contact NA 1E-03
Total NA 4E-03
All media NA 8E-01
Resident
AdultAmbient air at street
level, pre-aeration
system operation
Ambient air at street level, after aeration system started
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
Canal overflow—surface water
Resident
ChildAmbient air at street
level, pre-aeration
system operation
Ambient air at street level, after aeration system started
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
Canal overflow—surface water
17 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5
and <10-4
Chemicals with Cancer
Risks >10-6
and <10-5
Hazard
Index
Chemicals
with HI>1
TABLE 7-2
Summary of CTE Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational Inhalation 5E-06 Naphthalene NA
Total 5E-06 Naphthalene NA
Inhalation 1E-05 Naphthalene NA
Total 1E-05 Naphthalene NA
Ingestion 3E-05 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Dibenz(a,h)anthracene NA
Dermal
Contact 2E-05 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Dibenz(a,h)anthracene NA
Total 5E-05 Benzo(a)pyrene
Benzo(a)anthracene,
Benzo(b)fluoranthene,
Dibenz(a,h)anthracene
Indeno(1,2,3-c,d)pyrene NA
Ingestion 2E-07 NA
Dermal
Contact 1E-05
Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene NA
Total 1E-05
Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Indeno(1,2,3-c,d)pyrene NA
All media 8E-05 NA
Resident
Child/AdultAmbient air at street
level, pre-aeration
system operation
Ambient air at street level, after aeration system started
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
Canal overflow—surface water
18 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5
and <10-4
Chemicals with Cancer
Risks >10-6
and <10-5
Hazard
Index
Chemicals
with HI>1
TABLE 7-2
Summary of CTE Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational Ingestion 1E-06 0.5
Total 1E-06 0.5
Ingestion 1E-07 0.1
Total 1E-07 0.1
Ingestion 3E-06 Dioxin-Like PCB 1.2 Total PCB
Total 3E-06 Dioxin-Like PCB 1.2 Total PCB
Ingestion 1E-05
Dioxin-Like PCB,
Nondioxin-Like PCB,
Arsenic 2.3 Total PCB
Total 1E-05
Dioxin-Like PCB,
Nondioxin-Like PCB,
Arsenic 2.3 Total PCB
Fish Total Risk 4E-06 1.7
Crab Total Risk 1E-05 2.3
Ingestion 8E-07 0.4
Total 8E-07 0.4
Ingestion 9E-08 0.04
Total 9E-08 0.04
Ingestion 3E-06 Dioxin-Like PCB 0.9
Total 3E-06 Dioxin-Like PCB 0.9
Ingestion 1E-05
Benzo(a)pyrene, Dioxin-
Like PCB, Nondioxin-Like
PCB, Arsenic 0.6
Total 1E-05
Benzo(a)pyrene, Dioxin-
Like PCB, Nondioxin-Like
PCB, Arsenic 0.6
Fish Total Risk 4E-06 1.3
Crab Total Risk 1E-05 0.6
Angler
AdolescentStriped Bass in
Gowanus Canal (top-
level predator fish)
White Perch in Gowanus Canal (middle-level predator fish)
Eel in Gowanus Canal (bottom feeder fish)
Blue Crab in Gowanus Canal
Angler AdultStriped Bass in
Gowanus Canal (top-
level predator fish)
White Perch in Gowanus Canal (middle-level predator fish)
Eel in Gowanus Canal (bottom feeder fish)
Blue Crab in Gowanus Canal
19 of 22
Receptor Media
Exposure
Route
Cancer
Risk
Chemicals with
Cancer Risks >10-4
Chemicals with Cancer
Risks >10-5
and <10-4
Chemicals with Cancer
Risks >10-6
and <10-5
Hazard
Index
Chemicals
with HI>1
TABLE 7-2
Summary of CTE Cancer Risks and Hazard Indexes
Gowanus Canal Remedial Investigation, Brooklyn, New York
Recreational
Ingestion 2E-06 0.7
Total 2E-06 0.7
Ingestion 2E-07 0.08
Total 2E-07 0.08
Ingestion 7E-06
Dioxin-Like PCB,
Nondioxin-Like PCB,
Chromium 1.9 Total PCB
Total 7E-06
Dioxin-Like PCB,
Nondioxin-Like PCB,
Chromium 1.9 Total PCB
Ingestion 3E-05 Dioxin-Like PCB
Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Nondioxin-Like PCB,
Arsenic 3.6
Total 3E-05 Dioxin-Like PCB
Benzo(a)pyrene,
Dibenz(a,h)anthracene,
Nondioxin-Like PCB,
Arsenic 3.6
Fish Total Risk 9E-06 2.7
Crab Total Risk 3E-05 3.6
NA—Not applicable, pathway incomplete.
Receptor Total risks and hazards for recreational receptors includes sum of exposed and near-shore sediment, maximum of dry event and wet event surface water,
and maximum of air prior to aeration system operation and after aeration system started.
Receptor Total risks and hazards for residential and industrial receptors includes maximum between air prior to and after aeration system operation,
and surface water, and sediment.
Angler ChildStriped Bass in
Gowanus Canal (top-
level predator fish)
White Perch in Gowanus Canal (middle-level predator fish)
Eel in Gowanus Canal (bottom feeder fish)
Blue Crab in Gowanus Canal
20 of 22
TABLE 7-4
Summary of Total RME Cancer Risks for Recreational User and Angler
Gowanus Canal Remedial Investigation, Brooklyn, New York
Media Exposure Pathway
Recreational adult
Cancer Risk
Recreational
Adolescent Cancer
Risk
Recreational Child
Cancer Risk
Total Recreational
Cancer Risk
Ingestion 2E-05 1E-05 2E-04 3E-04
Dermal 1E-04 8E-05 2E-04 4E-04
Total1E-04 1E-04 4E-04 7E-04
Ingestion 2E-06 9E-07 6E-06 9E-06
Dermal 2E-04 1E-04 4E-04 7E-04
Total 2E-04 1E-04 4E-04 7E-04
Ingestion 2E-06 8E-07 4E-06 7E-06
Dermal 1E-04 8E-05 3E-04 4E-04
Total1E-04 8E-05 3E-04 5E-04
Inhalation 2E-07 6E-08 6E-08 4E-07
Total2E-07 6E-08 6E-08 4E-07
Inhalation 3E-07 7E-08 7E-08 4E-07
Total3E-07 7E-08 7E-08 4E-07
All media1 3E-04 2E-04 8E-04 1E-03
Angler adult Cancer
Risk
Angler Adolescent
Cancer Risk
Angler Child Cancer
Risk
Total Angler Cancer
Risk
Ingestion 1E-04 2E-05 4E-05 2E-04
Total 1E-04 2E-05 4E-05 2E-04
Ingestion 2E-05 4E-06 8E-06 3E-05
Total 2E-05 4E-06 8E-06 3E-05
Ingestion 3E-04 7E-05 2E-04 5E-04
Total 3E-04 7E-05 2E-04 5E-04
Ingestion 2E-04 4E-05 9E-05 3E-04
Total 2E-04 4E-05 9E-05 3E-04
Fish Total Risk 4E-04 9E-05 2E-04 7E-04
Crab Total Risk 2E-04 4E-05 9E-05 3E-04
Ambient air at canal level, after aeration system started
Receptor
Surface
sediment—exposed and
near-shore sediment in
Gowanus Canal
Surface water—Gowanus Canal, dry-weather event
Surface water—Gowanus Canal, wet-weather event
Ambient air at canal level, pre-aeration system operation
1Total risk includes sum of exposed and near shore sediment, maximum of dry event and wet event surface water, and maximum of air
prior to areation system operation and after aeration system started
Striped Bass in
Gowanus Canal (top-
level predator fish)
White Perch in Gowanus Canal (middle-level predator fish)
Eel in Gowanus Canal (bottom feeder fish)
Blue Crab in Gowanus Canal
21 of 22
TABLE 7-5
Summary of Total CTE Cancer Risks for Recreational User and Angler
Gowanus Canal Remedial Investigation, Brooklyn, New York
Media Exposure Pathway
Recreational adult
Cancer Risk
Recreational
Adolescent Cancer
Risk
Recreational Child
Cancer Risk
Total Recreational
Cancer Risk
Ingestion 6E-07 2E-06 4E-05 5E-05
Dermal 7E-06 3E-05 7E-05 1E-04
Total8E-06 3E-05 1E-04 1E-04
Ingestion 3E-08 6E-08 5E-07 6E-07
Dermal 8E-06 3E-05 1E-04 1E-04
Total 8E-06 3E-05 1E-04 1E-04
Ingestion 3E-08 5E-08 3E-07 4E-07
Dermal 5E-06 2E-05 7E-05 9E-05
Total5E-06 2E-05 7E-05 9E-05
All media1 2E-05 5E-05 2E-04 3E-04
Angler adult Cancer
Risk
Angler Adolescent
Cancer Risk
Angler Child Cancer
Risk
Total Angler Cancer
Risk
Ingestion 1E-06 8E-07 2E-06 3E-06
Total 1E-06 8E-07 2E-06 3E-06
Ingestion 1E-07 9E-08 2E-07 4E-07
Total 1E-07 9E-08 2E-07 4E-07
Ingestion 3E-06 3E-06 7E-06 1E-05
Total 3E-06 3E-06 7E-06 1E-05
Ingestion 1E-05 1E-05 3E-05 6E-05
Total 1E-05 1E-05 3E-05 6E-05
Fish Total Risk 4E-06 4E-06 9E-06 2E-05
Crab Total Risk 1E-05 1E-05 3E-05 6E-05
Receptor
Surface
sediment—exposed and
near-shore sediment in
Gowanus Canal
Surface water—Gowanus Canal, dry-weather event
Surface water—Gowanus Canal, wet-weather event
1Total risk includes sum of exposed and near shore sediment, maximum of dry event and wet event surface water, and maximum of air
prior to areation system operation and after aeration system started
Striped Bass in
Gowanus Canal (top-
level predator fish)
White Perch in Gowanus Canal (middle-level predator fish)
Eel in Gowanus Canal (bottom feeder fish)
Blue Crab in Gowanus Canal
22 of 22
FIGURE 2-1
Conceptual Exposure Model for Human Health Risk
Assessment
Gowanus Canal Remedial Investigation
Brooklyn, New York
Page Intentionally Left Blank
Attachment USEPA RAGS Part D and Supporting Tables
Page Intentionally Left Blank
TABLE 1
SELECTION OF EXPOSURE PATHWAYS
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Medium Exposure Exposure Receptor Receptor Exposure Type of Rationale for Selection or Exclusion
Timeframe Medium Point Population Age Route Analysis of Exposure Pathway
Current/Future Sediment Surface Sediment Recreational Adult Ingestion Quant
Dermal Quant
Adolescent Ingestion Quant
Dermal Quant
Child Ingestion Quant
Dermal Quant
Surface Water Surface Water Gowanus Canal Recreational Adult Ingestion Quant
Dermal Quant
Adolescent Ingestion Quant
Dermal Quant
Child Ingestion Quant
Dermal Quant
Air AirAmbient air at canal level Recreational Adult Inhalation Quant
Adolescent Inhalation Quant
Child Inhalation Quant
Ambient air at street level Industrial Worker Adult Inhalation Quant
Workers at the businesses surrounding the canal may inhale
ambient air from particulate and volatile emissions from
exposed sediment and volatile emissions from surface water
during the workday.
Resident Adult Inhalation Quant
Child Inhalation Quant
Child/Adult Inhalation Quant
Fish and Crab Tissue Angler Adult Ingestion Quant
Adolescent Ingestion Quant
Child Ingestion Quant
Angler Adult Ingestion Quant
Adolescent Ingestion Quant
Child Ingestion Quant
Eel in Gowanus Canal Angler Adult Ingestion Quant
Adolescent Ingestion Quant
Child Ingestion Quant
Exposed and near shore
sediment in Gowanus
Canal
People have been observed boating and fishing/crabbing in the
canal. These receptors may be exposed to surface sediment at
boat launch locations, bridge crossing locations, and at
locations with exposed sediment, or sediment covered by
shallow water.
People have been observed boating and fishing/crabbing in the
canal. These receptors may be exposed to surface water
throughout the canal during these activities.
People have been observed boating and fishing in the canal.
These receptors may inhale ambient air from particulate and
volatile emissions from exposed sediment and volatile
emissions from surface water throughout the canal during these
activities.
Striped Bass in Gowanus
Canal
People have been observed fishing in the canal. These
receptors may eat the fish they catch from the canal. Striped
bass are representative of top-level predator fish.
White Perch in Gowanus
Canal
People have been observed fishing in the canal. These
receptors may eat the fish they catch from the canal. White
perch are representative of middle-level predator fish.
People live within a few blocks of the canal, and may inhale
ambient air from particulate and volatile emissions from
exposed sediment and volatile emissions from surface water at
their residences and the surrounding areas.
Surface
Water/Sediment
People have been observed fishing in the canal. These
receptors may eat the fish they catch from the canal. American
eel are representative of bottom feeders.
Page 1 of 2
TABLE 1
SELECTION OF EXPOSURE PATHWAYS
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Medium Exposure Exposure Receptor Receptor Exposure Type of Rationale for Selection or Exclusion
Timeframe Medium Point Population Age Route Analysis of Exposure Pathway
Curren/tFuture Fish and Crab Tissue Angler Adult Ingestion Quant
Adolescent Ingestion Quant
Child Ingestion Quant
Sediment Industrial Worker Adult Ingestion Quant
Dermal Quant
Residential Adult Ingestion Quant
Dermal Quant
Child Ingestion Quant
Dermal Quant
Child/Adult Ingestion Quant
Dermal Quant
Air Industrial Worker Adult Inhalation None
Residential Adult Inhalation None
Child Inhalation None
Child/Adult Inhalation None
Surface WaterIndustrial Worker Adult Ingestion Quant
Dermal Quant
Residential Adult Ingestion Quant
Dermal Quant
Child Ingestion Quant
Dermal Quant
Child/Adult Ingestion Quant
Dermal Quant
Air Industrial Worker Adult Inhalation None
Residential Adult Inhalation None
Child Inhalation None
Child/Adult Inhalation None
Quant: will be quantitatively evaluated.
Qual: will be qualitatively evaluated.
None: Not considered to be a significant exposure pathway, and therefore not evaluated.
Crab in Gowanus Canal People have been observed crabbing in the canal. These
receptors may eat the crab they catch from the canal.
Volatile emissions from
overflow surface water in
areas adjacent to
Gowanus Canal
Emissions from surface water associated with canal overflow is
not expected to be a significant exposure pathway.
Particulate and volatile
emissions from sediment
deposited in areas
adjacent to Gowanus
Canal associated with
canal overflow
Emissions from deposited sediment associated with canal
overflow is not expected to be a significant exposure pathway.
Overflow Surface
Water
Canal Overflow - Surface
Water (surface water data
from wet event)
Workers at businesses surrounding the canal may be exposed
to canal surface water when the canal overflows.
People live within a few blocks of the canal. These receptors
may be exposed to surface water outside of the canal when the
canal overflows.
Overflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow
Workers at businesses surrounding the canal may be exposed
to sediment that gets deposited near the canal when the canal
overflows, prior to being washed away with rain.
People live within a few blocks of the canal. These receptors
may be exposed to surface sediment that gets deposited
outside of the canal when the canal overflows prior to being
wahsed away with rain.
Surface
Water/Sediment
Page 2 of 2
TABLE H-2.1
Exposed Sediment in Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Sediment
Surface Sediment
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Exposed and near shore sediment in Gowanus Canal
1,2-dichloroethane ug/kg8.50 J3.90 307B 3.90 - 23.05 / 14107-06-2 8.50 430 --- --- NO Below Screening Level--- C
1,4-dichlorobenzene ug/kg240 J7.60 301 5.00 - 2402 / 14106-46-7 240 2400 --- --- NO Below Screening Level--- C
Acetone ug/kg90.0 21.0 314 9.90 - 90.07 / 1467-64-1 90.0 6100000 --- --- NO Below Screening Level--- N
Benzene ug/kg46.0 J46.0 314 5.00 - 46.01 / 1471-43-2 46.0 1100 --- --- NO Below Screening Level--- C
Carbon disulfide ug/kg89.0 4.70 314 4.70 - 89.04 / 1475-15-0 89.0 82000 --- --- NO Below Screening Level--- N
Chlorobenzene ug/kg53.0 53.0 301 5.00 - 53.01 / 14108-90-7 53.0 29000 --- --- NO Below Screening Level--- N
Ethylbenzene ug/kg1100 J6.60 314 5.00 - 11003 / 14100-41-4 1100 5400 --- --- NO Below Screening Level--- C
Isopropylbenzene (cumene) ug/kg640 J4.60 314 4.60 - 6403 / 1498-82-8 640 210000 --- --- NO Below Screening Level--- N
m, p xylenes ug/kg120 J5.40 314 5.00 - 1202 / 14179601-23-1 120 340000 --- --- NO Below Screening Level--- N
Methylcyclohexane ug/kg170 J27.0 314 5.00 - 1702 / 14108-87-2 170 --- --- --- NO No toxicity information---
Methylene chloride ug/kg4.70 J4.70 307A 4.70 - 23.01 / 1475-09-2 4.70 11000 --- --- NO Below Screening Level--- C
o-xylene (1,2-dimethylbenzene) ug/kg290 J19.0 314 5.00 - 2902 / 1495-47-6 290 380000 --- --- NO Below Screening Level--- N
Tetrachloroethylene(PCE) ug/kg11.0 J5.80 302 5.00 - 23.02 / 14127-18-4 11.0 550 --- --- NO Below Screening Level--- C
Toluene ug/kg36.0 J36.0 314 5.00 - 36.01 / 14108-88-3 36.0 500000 --- --- NO Below Screening Level--- N
Trichloroethylene (TCE) ug/kg4.20 J4.20 301 4.20 - 23.01 / 1479-01-6 4.20 2800 --- --- NO Below Screening Level--- C
Trichlorofluoromethane ug/kg8.90 J4.60 302 4.60 - 23.03 / 1475-69-4 8.90 79000 --- --- NO Below Screening Level--- N
2-methylnaphthalene ug/kg15000 270 314 120 - 150008 / 1491-57-6 15000 31000 --- --- NO Below Screening Level--- N
Acenaphthene ug/kg460000 J160 314 160 - 46000010 / 1483-32-9 460000 340000 --- --- YES Above Screening Level--- N
Acenaphthylene ug/kg150000 J270 314 230 - 1500008 / 14208-96-8 150000 340000 --- --- NO Below Screening Level--- N
Anthracene ug/kg350000 J330 314 250 - 35000011 / 14120-12-7 350000 1700000 --- --- NO Below Screening Level--- N
Benzo(a)anthracene ug/kg320000 J1100 314 1100 - 32000014 / 1456-55-3 320000 150 --- --- YES Above Screening Level--- C
Benzo(a)pyrene ug/kg200000 J1200 314 250 - 20000013 / 1450-32-8 200000 15 --- --- YES Above Screening Level--- C
Benzo(b)fluoranthene ug/kg210000 J1000 314 250 - 21000013 / 14205-99-2 210000 150 --- --- YES Above Screening Level--- C
Benzo(g,h,i)perylene ug/kg74000 J610 314 260 - 7400013 / 14191-24-2 74000 170000 --- --- NO Below Screening Level--- N
Benzo(k)fluoranthene ug/kg120000 J820 314 250 - 12000013 / 14207-08-9 120000 1500 --- --- YES Above Screening Level--- C
Biphenyl (diphenyl) ug/kg650 J650 319 650 - 2300001 / 1492-52-4 650 210000 --- --- NO Below Screening Level--- N
Bis(2-ethylhexyl) phthalate ug/kg57000 J2600 314 2600 - 16000012 / 14117-81-7 57000 35000 --- --- YES Above Screening Level--- C
Carbazole ug/kg1400 J1400 308A 1400 - 2300001 / 1486-74-8 1400 --- --- --- NO No toxicity information---
Chrysene ug/kg320000 J790 314 790 - 32000014 / 14218-01-9 320000 15000 --- --- YES Above Screening Level--- C
Dibenz(a,h)anthracene ug/kg14000 200 314 200 - 1400012 / 1453-70-3 14000 15 --- --- YES Above Screening Level--- C
PAGE 1 of 3\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 1/25/2011 3:55:45 PM
TABLE H-2.1
Exposed Sediment in Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Sediment
Surface Sediment
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Exposed and near shore sediment in Gowanus Canal
Dibenzofuran ug/kg1100 J1100 319 1100 - 2300001 / 14132-64-9 1100 7800 --- --- NO Below Screening Level--- N
Di-n-butyl phthalate ug/kg550 J510 318 510 - 2300002 / 1484-74-2 550 610000 --- --- NO Below Screening Level--- N
Di-n-octylphthalate ug/kg9300 J9300 307A 6200 - 2300001 / 14117-84-0 9300 35000 --- --- NO Below Screening Level--- N
Fluoranthene ug/kg630000 J1200 314 1200 - 63000014 / 14206-44-0 630000 230000 --- --- YES Above Screening Level--- N
Fluorene ug/kg130000 J130 314 130 - 1300007 / 1486-73-7 130000 230000 --- --- NO Below Screening Level--- N
Indeno(1,2,3-c,d)pyrene ug/kg120000 J1000 314 1000 - 12000014 / 14193-39-5 120000 150 --- --- YES Above Screening Level--- C
Naphthalene ug/kg9100 J120 319 120 - 91008 / 1491-20-3 9100 3600 --- --- YES Above Screening Level--- C
Phenanthrene ug/kg470000 J510 314 510 - 47000013 / 1485-01-8 470000 1700000 --- --- NO Below Screening Level--- N
Pyrene ug/kg670000 J1400 314 1400 - 67000014 / 14129-00-0 670000 170000 --- --- YES Above Screening Level--- N
Alpha-chlordane ug/kg14.0 J6.70 308A 4.20 - 5302 / 145103-71-9 14.0 1600 --- --- NO Below Screening Level--- C
Beta endosulfan ug/kg13.0 J13.0 308A 8.20 - 10001 / 1433213-65-9 13.0 37000 --- --- NO Below Screening Level--- N
Endosulfan sulfate ug/kg21.0 J21.0 308A 8.20 - 10001 / 141031-07-8 21.0 37000 --- --- NO Below Screening Level--- N
Gamma-chlordane ug/kg29.0 J5.90 308A 4.20 - 5303 / 145103-74-2 29.0 1600 --- --- NO Below Screening Level--- C
Methoxychlor ug/kg33.0 J33.0 308A 33.0 - 53001 / 1472-43-5 33.0 31000 --- --- NO Below Screening Level--- N
P,P'-DDD ug/kg21.0 NJ7.90 302 7.90 - 21.04 / 472-54-8 21.0 2000 --- --- NO Below Screening Level--- C
P,P'-DDE ug/kg16.0 NJ16.0 308A 8.20 - 10001 / 1472-55-9 16.0 1400 --- --- NO Below Screening Level--- C
Aroclor 1016 ug/kg290 220 318 41.0 - 2902 / 1412674-11-2 290 390 --- --- NO Below Screening Level--- N
Aroclor 1248 ug/kg2200 J2200 316 41.0 - 22001 / 1412672-29-6 2200 220 --- --- YES Above Screening Level--- C
Aroclor 1254 ug/kg590 J590 308A 48.0 - 5901 / 1411097-69-1 590 110 --- --- YES Above Screening Level--- N
Aroclor 1260 ug/kg3400 J440 314 41.0 - 34003 / 1411096-82-5 3400 220 --- --- YES Above Screening Level--- C
PCB Dioxin ng/kg111 0.241 314 0.241 - 11112 / 12PCBDioxin 111 3.7 --- --- YES Above Screening Level--- C
PCB Nondioxin ng/kg14700000 92500 314 92500 - 1470000012 / 12PCBNonDioxin 14700000 220000 --- --- YES Above Screening Level--- C
Total PCB Congeners ng/kg15100000 99500 314 99500 - 1510000012 / 12PCBTotalCongen 15100000 110000 --- --- YES Above Screening Level--- N
Aluminum mg/kg18900 J4870 310 4870 - 1890014 / 147429-90-5 18900 7700 --- --- YES Above Screening Level--- N
Arsenic mg/kg44.7 3.40 308A 3.40 - 44.714 / 147440-38-2 44.7 0.39 --- --- YES Above Screening Level--- C
Barium mg/kg397 J86.5 316 86.5 - 39714 / 147440-39-3 397 1500 --- --- NO Below Screening Level--- N
Beryllium mg/kg0.46 J0.26 309 0.26 - 1.408 / 147440-41-7 0.46 16 --- --- NO Below Screening Level--- N
Cadmium mg/kg20.2 J1.50 308A 1.50 - 20.214 / 147440-43-9 20.2 7 --- --- YES Above Screening Level--- N
Calcium mg/kg10900 J5360 314 5360 - 1090014 / 147440-70-2 10900 --- --- --- NO Essential Nutrient---
Chromium mg/kg139 J22.7 314 22.7 - 13914 / 147440-47-3 139 0.29 --- --- YES Above Screening Level--- C
PAGE 2 of 3\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 1/25/2011 3:55:45 PM
TABLE H-2.1
Exposed Sediment in Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Sediment
Surface Sediment
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Exposed and near shore sediment in Gowanus Canal
Cobalt mg/kg14.8 J10.0 318 7.30 - 15.36 / 147440-48-4 14.8 2.3 --- --- YES Above Screening Level--- N
Copper mg/kg790 85.8 308A 85.8 - 79014 / 147440-50-8 790 310 --- --- YES Above Screening Level--- N
Cyanide, Total mg/kg18.0 J0.54 302 0.54 - 18.04 / 1457-12-5 18.0 160 --- --- NO Below Screening Level--- N
Iron mg/kg87000 12400 308A 12400 - 8700014 / 147439-89-6 87000 5500 --- --- YES Above Screening Level--- N
Lead mg/kg4220 184 308A 184 - 422014 / 147439-92-1 4220 400 --- --- YES Above Screening Level--- N
Magnesium mg/kg11400 J4210 318 4210 - 1140014 / 147439-95-4 11400 --- --- --- NO Essential Nutrient---
Manganese mg/kg480 89.1 308A 89.1 - 48014 / 147439-96-5 480 180 --- --- YES Above Screening Level--- N
Mercury mg/kg1.80 J0.61 318 0.61 - 1.8014 / 147439-97-6 1.80 2.3 --- --- NO Below Screening Level--- N
Nickel mg/kg84.5 J18.1 314 18.1 - 84.514 / 147440-02-0 84.5 150 --- --- NO Below Screening Level--- N
Potassium mg/kg4410 J730 310 730 - 441014 / 147440-09-7 4410 --- --- --- NO Essential Nutrient---
Selenium mg/kg4.90 J0.74 310 0.74 - 10.76 / 147782-49-2 4.90 39 --- --- NO Below Screening Level--- N
Silver mg/kg6.80 J1.90 310 1.20 - 6.8012 / 147440-22-4 6.80 39 --- --- NO Below Screening Level--- N
Sodium mg/kg15300 J2610 305 2610 - 1530014 / 147440-23-5 15300 --- --- --- NO Essential Nutrient---
Vanadium mg/kg61.2 J19.4 316 19.4 - 61.214 / 147440-62-2 61.2 39 --- --- YES Above Screening Level--- N
Zinc mg/kg1520 240 308A 240 - 15207 / 77440-66-6 1520 2300 --- --- NO Below Screening Level--- N
PAGE 3 of 3\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 1/25/2011 3:55:45 PM
TABLE H-2.2
Surface Water in Canal - Dry Weather - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water
Surface Water
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Gowanus Canal
1,4-dichlorobenzene ug/l0.11 J0.11 320 0.11 - 0.501 / 27106-46-7 0.11 0.43 190 NRWQC NO Below Screening Level--- C
Acetone ug/l6.70 1.10 317 1.10 - 6.7026 / 2767-64-1 6.70 2200 --- --- NO Below Screening Level--- N
Benzene ug/l11.0 0.50 304 0.50 - 11.018 / 2771-43-2 11.0 0.41 10 NYSDEC YES Above Screening Level--- C
Ethylbenzene ug/l1.30 0.19 320 0.19 - 1.3016 / 27100-41-4 1.30 1.5 2100 NRWQC NO Below Screening Level--- C
m, p xylenes ug/l1.30 0.16 320 0.16 - 1.3017 / 27179601-23-1 1.30 120 --- --- NO Below Screening Level--- N
Methylene chloride ug/l1.00 0.76 310 0.50 - 1.003 / 2775-09-2 1.00 4.8 200 NYSDEC NO Below Screening Level--- C
o-xylene (1,2-dimethylbenzene) ug/l0.53 0.24 320 0.24 - 0.535 / 2795-47-6 0.53 120 --- --- NO Below Screening Level--- N
Tert-butyl methyl ether ug/l0.18 J0.18 304 0.18 - 0.501 / 271634-04-4 0.18 12 --- --- NO Below Screening Level--- C
Toluene ug/l0.95 0.17 308B 0.17 - 0.9516 / 27108-88-3 0.95 230 6000 NYSDEC NO Below Screening Level--- N
2-methylnaphthalene ug/l0.017 J0.017 315 0.017 - 0.101 / 2791-57-6 0.017 15 --- --- NO Below Screening Level--- N
Acenaphthene ug/l0.94 0.26 319 0.10 - 0.9421 / 2783-32-9 0.94 220 990 NRWQC NO Below Screening Level--- N
Anthracene ug/l5.20 J1.20 325 0.10 - 5.203 / 27120-12-7 5.20 1100 40000 NRWQC NO Below Screening Level--- N
Benzo(a)anthracene ug/l0.83 0.12 325 0.10 - 0.837 / 2756-55-3 0.83 0.029 0.018 NRWQC YES Above Screening Level--- C
Benzo(a)pyrene ug/l0.66 0.19 319 0.10 - 0.663 / 2750-32-8 0.66 0.0029 0.018 NRWQC YES Above Screening Level--- C
Benzo(b)fluoranthene ug/l0.88 0.11 319 0.10 - 0.8821 / 27205-99-2 0.88 0.029 0.018 NRWQC YES Above Screening Level--- C
Benzo(g,h,i)perylene ug/l0.15 0.099 302, 307A 0.099 - 0.155 / 27191-24-2 0.15 110 --- --- NO Below Screening Level--- N
Benzo(k)fluoranthene ug/l0.29 0.10 319, 325 0.10 - 0.2911 / 27207-08-9 0.29 0.29 0.018 NRWQC NO Below Screening Level--- C
Bis(2-ethylhexyl) phthalate ug/l5.60 0.71 321 0.71 - 5.6013 / 27117-81-7 5.60 4.8 2.2 NRWQC YES Above Screening Level--- C
Caprolactam ug/l1.00 J1.00 312 1.00 - 5.001 / 27105-60-2 1.00 1800 --- --- NO Below Screening Level--- N
Carbazole ug/l2.10 J1.10 325 1.10 - 5.002 / 2786-74-8 2.10 --- --- --- NO No toxicity information---
Chrysene ug/l1.10 J0.11 325 0.10 - 1.1015 / 27218-01-9 1.10 2.9 0.018 NRWQC NO Below Screening Level--- C
Dimethyl phthalate ug/l3.40 J1.50 324 1.50 - 5.008 / 27131-11-3 3.40 365 1100000 NRWQC NO Below Screening Level--- N
Di-n-butyl phthalate ug/l1.40 J1.00 301 1.00 - 5.003 / 2784-74-2 1.40 370 4500 NRWQC NO Below Screening Level--- N
Fluoranthene ug/l2.30 J0.095 325 0.095 - 2.3023 / 27206-44-0 2.30 150 140 NRWQC NO Below Screening Level--- N
Fluorene ug/l0.19 0.11 325 0.10 - 0.1915 / 2786-73-7 0.19 150 5300 NRWQC NO Below Screening Level--- N
Indeno(1,2,3-c,d)pyrene ug/l0.22 0.097 319 0.097 - 0.2210 / 27193-39-5 0.22 0.029 0.018 NRWQC YES Above Screening Level--- C
Phenanthrene ug/l0.58 0.10 325 0.10 - 0.5811 / 2785-01-8 0.58 1100 --- --- NO Below Screening Level--- N
Phenol ug/l1.30 J1.30 314 1.30 - 5.001 / 27108-95-2 1.30 1100 860000 NRWQC NO Below Screening Level--- N
Pyrene ug/l1.50 J0.15 325 0.10 - 1.506 / 27129-00-0 1.50 110 4000 NRWQC NO Below Screening Level--- N
Arsenic ug/l23.4 18.8 309 9.10 - 23.416 / 257440-38-2 23.4 0.045 0.14 NRWQC YES Above Screening Level--- C
PAGE 1 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 12/10/2010 1:09:47 PM
TABLE H-2.2
Surface Water in Canal - Dry Weather - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water
Surface Water
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Gowanus Canal
Barium ug/l22.3 J18.4 310 10.0 - 1005 / 277440-39-3 22.3 730 --- --- NO Below Screening Level--- N
Calcium ug/l315000 J279000 312 254000 - 31500012 / 277440-70-2 315000 --- --- --- NO Essential Nutrient---
Chromium ug/l99.7 4.00 323 2.00 - 99.716 / 277440-47-3 99.7 0.043 --- --- YES Above Screening Level--- C
Copper ug/l232 123 308B 25.0 - 37511 / 277440-50-8 232 150 --- --- YES Above Screening Level--- N
Lead ug/l4.90 J1.90 323 1.90 - 10.05 / 277439-92-1 4.90 15 --- --- NO Below Screening Level--- N
Magnesium ug/l998000 809000 312 809000 - 99800027 / 277439-95-4 998000 --- --- --- NO Essential Nutrient---
Manganese ug/l72.9 45.0 310 45.0 - 72.927 / 277439-96-5 72.9 88 100 NRWQC NO Below Screening Level--- N
Mercury ug/l0.06 J0.047 324 0.047 - 0.2014 / 277439-97-6 0.06 1.1 0.0007 NYSDEC NO Below Screening Level--- N
Nickel ug/l52.3 J2.00 323 2.00 - 52.315 / 277440-02-0 52.3 73 4600 NRWQC NO Below Screening Level--- N
Potassium ug/l328000 J299000 312 268000 - 32800012 / 277440-09-7 328000 --- --- --- NO Essential Nutrient---
Selenium ug/l50.9 34.3 322 18.7 - 50.916 / 267782-49-2 50.9 18 4200 NRWQC YES Above Screening Level--- N
Sodium ug/l6620000 J5550000 307B 5550000 - 662000027 / 277440-23-5 6620000 --- --- --- NO Essential Nutrient---
Thallium ug/l2.10 J2.10 318 2.10 - 10.01 / 277440-28-0 2.10 --- 0.47 NRWQC NO No toxicity information---
Zinc ug/l25.7 J11.0 321 11.0 - 25.712 / 237440-66-6 25.7 1100 26000 NRWQC NO Below Screening Level--- N
PAGE 2 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 12/10/2010 1:09:47 PM
TABLE H-2.3
Surface Water in Canal - Wet Weather - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water
Surface Water
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Gowanus Canal
1,2,4-trichlorobenzene ug/l0.12 J0.12 305 0.12 - 0.501 / 26120-82-1 0.12 0.41 70 NRWQC NO Below Screening Level--- N
1,3-dichlorobenzene ug/l0.13 J0.13 303, 305 0.13 - 0.502 / 26541-73-1 0.13 37 960 NRWQC NO Below Screening Level--- N
1,4-dichlorobenzene ug/l0.87 0.12 306 0.12 - 0.8714 / 26106-46-7 0.87 0.43 190 NRWQC YES Above Screening Level--- C
Acetone ug/l12.0 12.0 307B 5.00 - 15.01 / 2667-64-1 12.0 2200 --- --- NO Below Screening Level--- N
Benzene ug/l2.90 0.36 316 0.36 - 2.9016 / 2671-43-2 2.90 0.41 10 NYSDEC YES Above Screening Level--- C
Carbon disulfide ug/l0.17 J0.14 308B, 313 0.14 - 0.505 / 2675-15-0 0.17 100 --- --- NO Below Screening Level--- N
Chlorobenzene ug/l0.33 J0.12 306 0.12 - 0.5017 / 26108-90-7 0.33 9.1 400 NYSDEC NO Below Screening Level--- N
Chloroform ug/l0.69 0.50 321 0.50 - 0.6914 / 2667-66-3 0.69 0.19 470 NRWQC YES Above Screening Level--- C
cis-1,2-dichloroethylene ug/l0.51 0.21 319 0.21 - 0.5117 / 26156-59-2 0.51 37 --- --- NO Below Screening Level--- N
Ethylbenzene ug/l2.60 0.18 316 0.18 - 2.6021 / 26100-41-4 2.60 1.5 2100 NRWQC YES Above Screening Level--- C
Isopropylbenzene (cumene) ug/l0.20 J0.096 316 0.096 - 0.504 / 2698-82-8 0.20 68 --- --- NO Below Screening Level--- N
m, p xylenes ug/l2.60 0.18 316 0.18 - 2.6022 / 26179601-23-1 2.60 120 --- --- NO Below Screening Level--- N
Methyl acetate ug/l0.44 J0.44 317 0.44 - 0.501 / 2679-20-9 0.44 3700 --- --- NO Below Screening Level--- N
Methylene chloride ug/l3.40 0.99 321 0.50 - 3.409 / 2675-09-2 3.40 4.8 200 NYSDEC NO Below Screening Level--- C
o-xylene (1,2-dimethylbenzene) ug/l5.10 0.13 316 0.13 - 5.1020 / 2695-47-6 5.10 120 --- --- NO Below Screening Level--- N
Tetrachloroethylene(PCE) ug/l40.0 J0.70 319 0.50 - 40.024 / 26127-18-4 40.0 0.11 3.3 NRWQC YES Above Screening Level--- C
Toluene ug/l16.0 0.85 316 0.50 - 16.024 / 26108-88-3 16.0 230 6000 NYSDEC NO Below Screening Level--- N
trans-1,3-dichloropropene ug/l0.16 J0.16 306 0.16 - 0.501 / 2610061-02-6 0.16 0.43 --- --- NO Below Screening Level--- C
Trichloroethylene (TCE) ug/l0.12 J0.10 320 0.10 - 0.502 / 2679-01-6 0.12 2 30 NRWQC NO Below Screening Level--- C
2-methylnaphthalene ug/l3.00 0.17 316 0.10 - 3.003 / 2691-57-6 3.00 15 --- --- NO Below Screening Level--- N
Acenaphthene ug/l0.40 0.095 313 0.095 - 1.0020 / 2683-32-9 0.40 220 990 NRWQC NO Below Screening Level--- N
Anthracene ug/l0.095 J0.095 302 0.095 - 1.001 / 26120-12-7 0.095 1100 40000 NRWQC NO Below Screening Level--- N
Benzo(a)anthracene ug/l0.15 0.074 302 0.074 - 1.004 / 2656-55-3 0.15 0.029 0.018 NRWQC YES Above Screening Level--- C
Benzo(a)pyrene ug/l0.30 0.14 309 0.10 - 1.006 / 2650-32-8 0.30 0.0029 0.018 NRWQC YES Above Screening Level--- C
Benzo(b)fluoranthene ug/l0.33 0.12 319 0.10 - 1.0016 / 26205-99-2 0.33 0.029 0.018 NRWQC YES Above Screening Level--- C
Benzo(g,h,i)perylene ug/l1.50 J0.13 308A 0.10 - 1.5023 / 26191-24-2 1.50 110 --- --- NO Below Screening Level--- N
Benzo(k)fluoranthene ug/l0.12 J0.037 319 0.037 - 1.007 / 26207-08-9 0.12 0.29 0.018 NRWQC NO Below Screening Level--- C
Benzyl butyl phthalate ug/l1.10 J0.73 307A 0.73 - 50.03 / 2685-68-7 1.10 35 1900 NRWQC NO Below Screening Level--- C
Caprolactam ug/l1.50 J0.33 320 0.33 - 50.011 / 26105-60-2 1.50 1800 --- --- NO Below Screening Level--- N
Chrysene ug/l0.11 0.057 302 0.057 - 1.003 / 26218-01-9 0.11 2.9 0.018 NRWQC NO Below Screening Level--- C
PAGE 1 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 11/30/2010 4:38:10 PM
TABLE H-2.3
Surface Water in Canal - Wet Weather - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water
Surface Water
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Gowanus Canal
Dibenz(a,h)anthracene ug/l0.11 0.071 303 0.071 - 1.004 / 2653-70-3 0.11 0.0029 0.018 NRWQC YES Above Screening Level--- C
Di-n-butyl phthalate ug/l0.62 J0.28 320 0.28 - 50.012 / 2684-74-2 0.62 370 4500 NRWQC NO Below Screening Level--- N
Di-n-octylphthalate ug/l0.28 J0.23 318 0.23 - 50.03 / 26117-84-0 0.28 4.8 --- --- NO Below Screening Level--- N
Fluoranthene ug/l0.32 0.089 313 0.089 - 1.0022 / 26206-44-0 0.32 150 140 NRWQC NO Below Screening Level--- N
Fluorene ug/l0.32 J0.079 313 0.079 - 1.003 / 2686-73-7 0.32 150 5300 NRWQC NO Below Screening Level--- N
Indeno(1,2,3-c,d)pyrene ug/l1.10 0.16 316 0.10 - 1.1023 / 26193-39-5 1.10 0.029 0.018 NRWQC YES Above Screening Level--- C
Naphthalene ug/l1.40 0.13 316 0.10 - 1.405 / 2691-20-3 1.40 0.14 --- --- YES Above Screening Level--- C
Pentachlorophenol ug/l0.13 J0.13 311 0.13 - 2.001 / 2687-86-5 0.13 0.56 3 NRWQC NO Below Screening Level--- C
Phenanthrene ug/l1.40 0.13 316 0.10 - 1.4014 / 2685-01-8 1.40 1100 --- --- NO Below Screening Level--- N
Pyrene ug/l0.34 0.10 313 0.10 - 1.0022 / 26129-00-0 0.34 110 4000 NRWQC NO Below Screening Level--- N
Arsenic ug/l26.2 6.90 302 6.90 - 26.226 / 267440-38-2 26.2 0.045 0.14 NRWQC YES Above Screening Level--- C
Barium ug/l42.8 J18.4 307A 18.4 - 42.826 / 267440-39-3 42.8 730 --- --- NO Below Screening Level--- N
Calcium ug/l296000 97200 324 97200 - 29600024 / 247440-70-2 296000 --- --- --- NO Essential Nutrient---
Chromium ug/l29.3 J3.90 308B 3.90 - 29.326 / 267440-47-3 29.3 0.043 --- --- YES Above Screening Level--- C
Cobalt ug/l3.90 J3.90 307A 3.90 - 10.01 / 267440-48-4 3.90 1.1 --- --- YES Above Screening Level--- N
Iron ug/l1040 J651 317 651 - 15003 / 267439-89-6 1040 2600 --- --- NO Below Screening Level--- N
Lead ug/l26.8 2.90 317 2.90 - 26.826 / 267439-92-1 26.8 15 --- --- YES Above Screening Level--- N
Magnesium ug/l972000 276000 303 276000 - 97200025 / 257439-95-4 972000 --- --- --- NO Essential Nutrient---
Manganese ug/l65.6 48.4 307A 48.4 - 65.626 / 267439-96-5 65.6 88 100 NRWQC NO Below Screening Level--- N
Mercury ug/l0.089 J0.065 302 0.065 - 0.2019 / 267439-97-6 0.089 1.1 0.0007 NYSDEC NO Below Screening Level--- N
Nickel ug/l29.8 J2.10 308B 2.10 - 29.825 / 257440-02-0 29.8 73 4600 NRWQC NO Below Screening Level--- N
Potassium ug/l290000 88700 324 88700 - 29000024 / 247440-09-7 290000 --- --- --- NO Essential Nutrient---
Selenium ug/l64.6 J13.9 301 13.9 - 64.626 / 267782-49-2 64.6 18 4200 NRWQC YES Above Screening Level--- N
Sodium ug/l7090000 J2340000 301 2340000 - 709000025 / 257440-23-5 7090000 --- --- --- NO Essential Nutrient---
Zinc ug/l75.7 J17.7 318 17.7 - 75.724 / 267440-66-6 75.7 1100 26000 NRWQC NO Below Screening Level--- N
PAGE 2 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 11/30/2010 4:38:11 PM
TABLE H-2.4
Ambient Air at Canal Level, Round 1 - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Air
Air
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Ambient air at Canal level
Acetone ug/m360.0 22.0 506 22.0 - 60.010 / 1067-64-1 60.0 3200 --- --- NO Below Screening Level--- N
Benzene ug/m31.10 0.69 501 0.69 - 1.1010 / 1071-43-2 1.10 0.31 --- --- YES Above Screening Level--- C
Bromoform ug/m30.12 0.12 505 0.10 - 0.521 / 1075-25-2 0.12 2.2 --- --- NO Below Screening Level--- C
Carbon disulfide ug/m32.70 2.70 508 1.60 - 2.701 / 1075-15-0 2.70 73 --- --- NO Below Screening Level--- N
Chloroform ug/m30.28 0.16 501 0.16 - 0.287 / 1067-66-3 0.28 0.11 --- --- YES Above Screening Level--- C
Chloromethane ug/m33.10 1.70 504 1.70 - 3.1010 / 1074-87-3 3.10 9.4 --- --- NO Below Screening Level--- N
Ethylbenzene ug/m35.10 0.48 508 0.48 - 5.1010 / 10100-41-4 5.10 0.97 --- --- YES Above Screening Level--- C
Methyl ethyl ketone (2-butanone)
ug/m34.30 1.70 504 1.70 - 4.3010 / 1078-93-3 4.30 520 --- --- NO Below Screening Level--- N
Methylene chloride ug/m34.50 J1.80 501 1.70 - 4.506 / 1075-09-2 4.50 5.2 --- --- NO Below Screening Level--- C
Toluene ug/m38.50 2.70 507 2.70 - 8.5010 / 10108-88-3 8.50 520 --- --- NO Below Screening Level--- N
Trichloroethylene (TCE) ug/m30.90 0.069 507 0.069 - 0.907 / 1079-01-6 0.90 1.2 --- --- NO Below Screening Level--- C
Xylene, total ug/m316.0 1.80 508 1.80 - 16.010 / 101330-20-7 16.0 10 --- --- YES Above Screening Level--- N
Acenaphthene ug/m35.70 0.057 502 0.057 - 5.7010 / 1083-32-9 5.70 --- --- --- NO No toxicity information---
Acenaphthylene ug/m30.049 J0.0014 502 0.0014 - 0.04910 / 10208-96-8 0.049 --- --- --- NO No toxicity information---
Anthracene ug/m30.37 0.0042 502 0.0042 - 0.3710 / 10120-12-7 0.37 --- --- --- NO No toxicity information---
Benzo(a)anthracene ug/m30.0023 J0.002 501 0.002 - 0.0942 / 1056-55-3 0.0023 0.0087 --- --- NO Below Screening Level--- C
Benzo(b)fluoranthene ug/m30.0025 J0.0025 501 0.0025 - 0.0941 / 10205-99-2 0.0025 0.0087 --- --- NO Below Screening Level--- C
Chrysene ug/m30.0088 J0.0088 502 0.0088 - 0.0941 / 10218-01-9 0.0088 0.087 --- --- NO Below Screening Level--- C
Fluoranthene ug/m31.00 0.019 502 0.019 - 1.0010 / 10206-44-0 1.00 --- --- --- NO No toxicity information---
Fluorene ug/m34.70 0.034 502 0.034 - 4.7010 / 1086-73-7 4.70 --- --- --- NO No toxicity information---
Naphthalene ug/m33.40 0.19 503 0.19 - 3.4010 / 1091-20-3 3.40 0.072 --- --- YES Above Screening Level--- C
Phenanthrene ug/m36.50 0.084 502 0.084 - 6.5010 / 1085-01-8 6.50 --- --- --- NO No toxicity information---
Pyrene ug/m30.55 0.014 502 0.014 - 0.5510 / 10129-00-0 0.55 --- --- --- NO No toxicity information---
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 11/29/2010 3:57:25 PM
TABLE H-2.5
Ambient Air at Canal Level, Round 2 - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Air
Air
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Ambient air at Canal level
Acetone ug/m3300 24.0 509 24.0 - 30010 / 1067-64-1 300 3200 --- --- NO Below Screening Level--- N
Benzene ug/m33.80 0.64 510 0.64 - 3.8010 / 1071-43-2 3.80 0.31 --- --- YES Above Screening Level--- C
Carbon disulfide ug/m33.30 3.30 503 1.60 - 7.801 / 1075-15-0 3.30 73 --- --- NO Below Screening Level--- N
Chloroform ug/m30.24 0.16 503 0.098 - 0.248 / 1067-66-3 0.24 0.11 --- --- YES Above Screening Level--- C
Chloromethane ug/m32.20 1.60 506, 510 1.60 - 5.208 / 1074-87-3 2.20 9.4 --- --- NO Below Screening Level--- N
Ethylbenzene ug/m34.40 0.41 510 0.41 - 4.4010 / 10100-41-4 4.40 0.97 --- --- YES Above Screening Level--- C
Methyl ethyl ketone (2-butanone)
ug/m318.0 2.70 509 2.70 - 18.010 / 1078-93-3 18.0 520 --- --- NO Below Screening Level--- N
Methylene chloride ug/m32.00 J1.90 506 1.70 - 8.702 / 1075-09-2 2.00 5.2 --- --- NO Below Screening Level--- C
Toluene ug/m325.0 5.00 510 3.80 - 25.09 / 10108-88-3 25.0 520 --- --- NO Below Screening Level--- N
Trichloroethylene (TCE) ug/m30.20 0.096 505 0.096 - 0.278 / 1079-01-6 0.20 1.2 --- --- NO Below Screening Level--- C
Xylene, total ug/m328.0 2.90 510 2.90 - 28.09 / 101330-20-7 28.0 10 --- --- YES Above Screening Level--- N
Acenaphthene ug/m33.30 J0.084 502 0.084 - 3.308 / 883-32-9 3.30 --- --- --- NO No toxicity information---
Acenaphthylene ug/m30.04 J0.0043 502 0.0043 - 0.048 / 8208-96-8 0.04 --- --- --- NO No toxicity information---
Anthracene ug/m30.15 J0.0054 502 0.0054 - 0.158 / 8120-12-7 0.15 --- --- --- NO No toxicity information---
Benzo(a)anthracene ug/m30.0033 J0.0024 509 0.0024 - 0.0713 / 856-55-3 0.0033 0.0087 --- --- NO Below Screening Level--- C
Chrysene ug/m30.0043 J0.0043 505 0.0043 - 0.0711 / 8218-01-9 0.0043 0.087 --- --- NO Below Screening Level--- C
Fluoranthene ug/m30.45 J0.021 502 0.021 - 0.458 / 8206-44-0 0.45 --- --- --- NO No toxicity information---
Fluorene ug/m32.30 J0.056 502 0.056 - 2.308 / 886-73-7 2.30 --- --- --- NO No toxicity information---
Naphthalene ug/m32.60 J0.47 503 0.47 - 2.608 / 891-20-3 2.60 0.072 --- --- YES Above Screening Level--- C
Phenanthrene ug/m33.00 J0.098 502 0.098 - 3.008 / 885-01-8 3.00 --- --- --- NO No toxicity information---
Pyrene ug/m30.23 J0.014 502 0.014 - 0.238 / 8129-00-0 0.23 --- --- --- NO No toxicity information---
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 11/29/2010 3:58:04 PM
TABLE H-2.6
Ambient Air at Street Level, Round 1 - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Air
Air
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Ambient air at Street Level
Acetone ug/m353.0 25.0 510 25.0 - 53.010 / 1067-64-1 53.0 3200 --- --- NO Below Screening Level--- N
Benzene ug/m32.30 0.61 501 0.61 - 2.3010 / 1071-43-2 2.30 0.31 --- --- YES Above Screening Level--- C
Bromoform ug/m30.37 0.37 503 0.10 - 0.521 / 1075-25-2 0.37 2.2 --- --- NO Below Screening Level--- C
Carbon disulfide ug/m33.80 2.60 504 1.60 - 3.802 / 1075-15-0 3.80 73 --- --- NO Below Screening Level--- N
Chloroform ug/m30.39 0.17 501 0.17 - 0.396 / 1067-66-3 0.39 0.11 --- --- YES Above Screening Level--- C
Chloromethane ug/m33.00 1.80 502 1.80 - 3.0010 / 1074-87-3 3.00 9.4 --- --- NO Below Screening Level--- N
Ethylbenzene ug/m31.70 0.56 501 0.56 - 1.7010 / 10100-41-4 1.70 0.97 --- --- YES Above Screening Level--- C
Methyl ethyl ketone (2-butanone)
ug/m311.0 1.90 510 1.90 - 11.010 / 1078-93-3 11.0 520 --- --- NO Below Screening Level--- N
Methylene chloride ug/m35.10 J1.70 501 1.70 - 5.105 / 1075-09-2 5.10 5.2 --- --- NO Below Screening Level--- C
Toluene ug/m36.20 3.00 501 3.00 - 6.2010 / 10108-88-3 6.20 520 --- --- NO Below Screening Level--- N
Trichloroethylene (TCE) ug/m30.74 0.06 507 0.054 - 0.745 / 1079-01-6 0.74 1.2 --- --- NO Below Screening Level--- C
Xylene, total ug/m36.80 2.00 501 2.00 - 6.8010 / 101330-20-7 6.80 10 --- --- NO Below Screening Level--- N
Acenaphthene ug/m30.61 0.037 505 0.037 - 0.6110 / 1083-32-9 0.61 --- --- --- NO No toxicity information---
Acenaphthylene ug/m30.018 J0.0016 507 0.0016 - 0.01810 / 10208-96-8 0.018 --- --- --- NO No toxicity information---
Anthracene ug/m30.043 J0.0029 507 0.0029 - 0.04310 / 10120-12-7 0.043 --- --- --- NO No toxicity information---
Fluoranthene ug/m30.094 0.012 505 0.012 - 0.09410 / 10206-44-0 0.094 --- --- --- NO No toxicity information---
Fluorene ug/m30.31 0.03 505 0.03 - 0.3110 / 1086-73-7 0.31 --- --- --- NO No toxicity information---
Naphthalene ug/m31.30 0.10 503, 505 0.10 - 1.3010 / 1091-20-3 1.30 0.072 --- --- YES Above Screening Level--- C
Phenanthrene ug/m30.55 0.059 509 0.059 - 0.5510 / 1085-01-8 0.55 --- --- --- NO No toxicity information---
Pyrene ug/m30.06 J0.0088 505 0.0088 - 0.0610 / 10129-00-0 0.06 --- --- --- NO No toxicity information---
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 11/29/2010 3:58:54 PM
TABLE H-2.7
Ambient Air at Street Level, Round 1 - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Air
Air
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Ambient air at Street Level
Acetone ug/m3460 23.0 507 23.0 - 46010 / 1067-64-1 460 3200 --- --- NO Below Screening Level--- N
Benzene ug/m31.40 0.67 510 0.67 - 1.4010 / 1071-43-2 1.40 0.31 --- --- YES Above Screening Level--- C
Chloroform ug/m30.45 0.16 505 0.16 - 0.459 / 1067-66-3 0.45 0.11 --- --- YES Above Screening Level--- C
Chloromethane ug/m32.50 1.40 502 1.40 - 5.208 / 1074-87-3 2.50 9.4 --- --- NO Below Screening Level--- N
Ethylbenzene ug/m31.80 0.56 510 0.56 - 1.8010 / 10100-41-4 1.80 0.97 --- --- YES Above Screening Level--- C
Methyl ethyl ketone (2-butanone)
ug/m330.0 2.30 507 2.30 - 30.010 / 1078-93-3 30.0 520 --- --- NO Below Screening Level--- N
Methylene chloride ug/m32.00 J2.00 506 1.70 - 8.701 / 1075-09-2 2.00 5.2 --- --- NO Below Screening Level--- C
Toluene ug/m37.50 5.00 504, 505 3.70 - 7.506 / 10108-88-3 7.50 520 --- --- NO Below Screening Level--- N
Trichloroethylene (TCE) ug/m30.60 0.06 502 0.06 - 0.608 / 1079-01-6 0.60 1.2 --- --- NO Below Screening Level--- C
Xylene, total ug/m37.60 2.40 510 2.40 - 7.6010 / 101330-20-7 7.60 10 --- --- NO Below Screening Level--- N
Acenaphthene ug/m31.30 0.079 507 0.079 - 1.3010 / 1083-32-9 1.30 --- --- --- NO No toxicity information---
Acenaphthylene ug/m30.14 0.0019 507 0.0019 - 0.1410 / 10208-96-8 0.14 --- --- --- NO No toxicity information---
Anthracene ug/m30.11 0.004 507 0.004 - 0.1110 / 10120-12-7 0.11 --- --- --- NO No toxicity information---
Fluoranthene ug/m30.20 0.018 509 0.018 - 0.2010 / 10206-44-0 0.20 --- --- --- NO No toxicity information---
Fluorene ug/m30.63 0.057 507 0.057 - 0.6310 / 1086-73-7 0.63 --- --- --- NO No toxicity information---
Naphthalene ug/m34.40 0.26 507 0.26 - 4.4010 / 1091-20-3 4.40 0.072 --- --- YES Above Screening Level--- C
Phenanthrene ug/m30.87 0.099 509 0.099 - 0.8710 / 1085-01-8 0.87 --- --- --- NO No toxicity information---
Pyrene ug/m30.11 0.0093 509 0.0093 - 0.1110 / 10129-00-0 0.11 --- --- --- NO No toxicity information---
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 11/29/2010 3:59:37 PM
TABLE H-2.8
Striped Bass Filet from Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Striped Bass in Gowanus Canal
Alpha-chlordane ug/kg8.20 J5.10 GC-TI406-SB 1.70 - 8.202 / 45103-71-9 8.20 9 --- --- NO Below Screening Level--- C
Gamma-chlordane ug/kg3.50 J3.50 GC-TI403-SB 1.70 - 3.501 / 55103-74-2 3.50 9 --- --- NO Below Screening Level--- C
P,P'-DDD ug/kg5.60 J4.80 GC-TI406-SB 3.30 - 5.603 / 472-54-8 5.60 13 --- --- NO Below Screening Level--- C
P,P'-DDE ug/kg12.0 NJ4.80 GC-TI406-SB 4.80 - 12.05 / 572-55-9 12.0 9.3 --- --- YES Above Screening Level--- C
P,P'-DDT ug/kg9.60 NJ9.60 GC-TI403-SB 3.30 - 9.601 / 550-29-3 9.60 9.3 --- --- YES Above Screening Level--- C
PCB Dioxin ng/kg4.31 2.83 GC-TI406-SB 2.83 - 4.315 / 5PCBDioxin 4.31 0.020 --- --- YES Above Screening Level--- C
PCB Nondioxin ng/kg409000 244000 GC-TI403-SB 244000 - 4090005 / 5PCBNonDioxin 409000 1600 --- --- YES Above Screening Level--- C
Total PCB Congeners ng/kg435000 263000 GC-TI403-SB 263000 - 4350005 / 5PCBTotalCongen 435000 1600 --- --- YES Above Screening Level--- C
Arsenic mg/kg0.68 J0.45 GC-TI403-SB 0.45 - 0.983 / 57440-38-2 0.68 0.0021 --- --- YES Above Screening Level--- C
Calcium mg/kg541 J197 GC-TI403-SB 197 - 5415 / 57440-70-2 541 --- --- --- NO Essential Nutrient---
Magnesium mg/kg343 J190 GC-TI401-SB 190 - 3435 / 57439-95-4 343 --- --- --- NO Essential Nutrient---
Mercury mg/kg0.20 0.15 GC-TI406-SB 0.15 - 0.484 / 57439-97-6 0.20 0.022 --- --- YES Above Screening Level--- N
Potassium mg/kg3970 2070 GC-TI406-SB 2070 - 39705 / 57440-09-7 3970 --- --- --- NO Essential Nutrient---
Selenium mg/kg1.20 J1.20 GC-TI403-SB, GC-TI406-SB
1.20 - 3.502 / 57782-49-2 1.20 0.68 --- --- YES Above Screening Level--- N
Sodium mg/kg1060 468 GC-TI403-SB 468 - 10605 / 57440-23-5 1060 --- --- --- NO Essential Nutrient---
Zinc mg/kg16.4 3.90 GC-TI403-SB 3.90 - 16.45 / 57440-66-6 16.4 41 --- --- NO Below Screening Level--- N
Cyanide, Total mg/kg0.63 J0.28 GC-TI401-SB 0.28 - 2.503 / 557-12-5 0.63 2.7 --- --- NO Below Screening Level--- N
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA1 1/25/2011 3:34:51 PM
TABLE H-2.9
White Perch Filet from Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
White Perch in Gowanus Canal
Gamma-chlordane ug/kg5.00 J5.00 GC-TI401-WP 1.70 - 5.001 / 25103-74-2 5.00 9 --- --- NO Below Screening Level--- C
P,P'-DDE ug/kg7.00 NJ6.00 GC-TI401-WP 6.00 - 7.002 / 272-55-9 7.00 9.3 --- --- NO Below Screening Level--- C
PCB Dioxin ng/kg5.08 4.46 GC-TI401-WP 4.46 - 5.082 / 2PCBDioxin 5.08 0.020 --- --- YES Above Screening Level--- C
PCB Nondioxin ng/kg437000 302000 GC-TI401-WP 302000 - 4370002 / 2PCBNonDioxin 437000 1600 --- --- YES Above Screening Level--- C
Total PCB Congeners ng/kg462000 324000 GC-TI401-WP 324000 - 4620002 / 2PCBTotalCongen 462000 1600 --- --- YES Above Screening Level--- C
Calcium mg/kg4220 J318 GC-TI401-WP 318 - 42202 / 27440-70-2 4220 --- --- --- NO Essential Nutrient---
Copper mg/kg1.30 J0.90 GC-TI401-WP 0.90 - 1.302 / 27440-50-8 1.30 5.4 --- --- NO Below Screening Level--- N
Magnesium mg/kg362 J245 GC-TI401-WP 245 - 3622 / 27439-95-4 362 --- --- --- NO Essential Nutrient---
Manganese mg/kg5.20 5.20 GC-TI401-WP 1.50 - 5.201 / 27439-96-5 5.20 19 --- --- NO Below Screening Level--- N
Mercury mg/kg0.19 0.16 GC-TI401-WP 0.16 - 0.192 / 27439-97-6 0.19 0.022 --- --- YES Above Screening Level--- N
Potassium mg/kg2590 2550 GC-TI401-WP 2550 - 25902 / 27440-09-7 2590 --- --- --- NO Essential Nutrient---
Selenium mg/kg1.40 J1.40 GC-TI401-WP 1.40 - 3.401 / 27782-49-2 1.40 0.68 --- --- YES Above Screening Level--- N
Sodium mg/kg823 628 GC-TI401-WP 628 - 8232 / 27440-23-5 823 --- --- --- NO Essential Nutrient---
Zinc mg/kg9.50 5.10 GC-TI401-WP 5.10 - 9.502 / 27440-66-6 9.50 41 --- --- NO Below Screening Level--- N
Cyanide, Total mg/kg0.91 J0.22 GC-TI401-WP 0.22 - 0.912 / 257-12-5 0.91 2.7 --- --- NO Below Screening Level--- N
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA1 1/25/2011 3:35:19 PM
TABLE H-2.10
Atlantic Eel Filet from Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Eel in Gowanus Canal
Alpha-chlordane ug/kg22.0 J10.0 GC-TI402-XAE 1.70 - 22.03 / 45103-71-9 22.0 9 --- --- YES Above Screening Level--- C
Dieldrin ug/kg17.0 J5.00 GC-TI402-XAE 3.30 - 17.05 / 660-57-1 17.0 0.2 --- --- YES Above Screening Level--- C
Gamma-chlordane ug/kg13.0 J9.90 GC-TI403-XAE 1.70 - 13.02 / 35103-74-2 13.0 9 --- --- YES Above Screening Level--- C
Methoxychlor ug/kg39.0 J34.0 GC-TI403-XAE 17.0 - 39.02 / 672-43-5 39.0 680 --- --- NO Below Screening Level--- N
P,P'-DDD ug/kg38.0 NJ13.0 GC-TI403-XAE 13.0 - 38.04 / 472-54-8 38.0 13 --- --- YES Above Screening Level--- C
P,P'-DDE ug/kg25.0 J16.0 GC-TI403-XAE 3.30 - 25.04 / 572-55-9 25.0 9.3 --- --- YES Above Screening Level--- C
P,P'-DDT ug/kg47.0 J30.0 GC-TI406-XAE 3.30 - 47.02 / 450-29-3 47.0 9.3 --- --- YES Above Screening Level--- C
PCB Dioxin ng/kg14.1 4.73 GC-TI406-XAE 4.73 - 14.16 / 6PCBDioxin 14.1 0.020 --- --- YES Above Screening Level--- C
PCB Nondioxin ng/kg1220000 480000 GC-TI406-XAE 480000 - 12200006 / 6PCBNonDioxin 1220000 1600 --- --- YES Above Screening Level--- C
Total PCB Congeners ng/kg1350000 519000 GC-TI406-XAE 519000 - 13500006 / 6PCBTotalCongen 1350000 1600 --- --- YES Above Screening Level--- C
Arsenic mg/kg0.50 J0.50 GC-TI402-XAE 0.50 - 0.981 / 67440-38-2 0.50 0.0021 --- --- YES Above Screening Level--- C
Calcium mg/kg295 J198 GC-TI402-XAE 198 - 4853 / 67440-70-2 295 --- --- --- NO Essential Nutrient---
Chromium mg/kg0.67 J0.53 GC-TI402-XAE 0.53 - 0.972 / 67440-47-3 0.67 0.0063 --- --- YES Above Screening Level--- C
Copper mg/kg7.40 0.86 GC-TI402-XAE 0.86 - 7.403 / 67440-50-8 7.40 5.4 --- --- YES Above Screening Level--- N
Iron mg/kg12.7 12.7 GC-TI402-XAE 9.70 - 12.71 / 67439-89-6 12.7 95 --- --- NO Essential Nutrient--- N
Magnesium mg/kg278 J169 GC-TI403-XAE 169 - 4854 / 67439-95-4 278 --- --- --- NO Essential Nutrient---
Mercury mg/kg0.26 0.056 GC-TI406-XAE 0.056 - 0.266 / 67439-97-6 0.26 0.022 --- --- YES Above Screening Level--- N
Potassium mg/kg3570 1960 GC-TI403-XAE 1960 - 35706 / 67440-09-7 3570 --- --- --- NO Essential Nutrient---
Selenium mg/kg1.40 J1.20 GC-TI403-XAE 1.20 - 3.402 / 67782-49-2 1.40 0.68 --- --- YES Above Screening Level--- N
Sodium mg/kg944 524 GC-TI403-XAE 524 - 9446 / 67440-23-5 944 --- --- --- NO Essential Nutrient---
Zinc mg/kg29.7 11.5 GC-TI403-XAE 11.5 - 29.76 / 67440-66-6 29.7 41 --- --- NO Below Screening Level--- N
Cyanide, Total mg/kg3.10 0.30 GC-TI403-XAE 0.30 - 3.106 / 657-12-5 3.10 2.7 --- --- YES Above Screening Level--- N
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA1 1/25/2011 3:33:57 PM
TABLE H-2.11
Blue Crab Edible Tissue and Hepatopancreas from Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Crab in Gowanus Canal
Acenaphthene ug/kg73.0 23.8 GC-TI401-BC 23.8 - 73.012 / 1283-32-9 73.0 8100 --- --- NO Below Screening Level--- N
Acenaphthylene ug/kg14.3 6.07 GC-TI401-BC 3.64 - 14.36 / 12208-96-8 14.3 8100 --- --- NO Below Screening Level--- N
Anthracene ug/kg12.4 3.85 GC-TI401-BC 3.85 - 12.412 / 12120-12-7 12.4 41000 --- --- NO Below Screening Level--- N
Benzo(a)anthracene ug/kg15.7 4.75 GC-TI402-BC 2.87 - 15.75 / 1256-55-3 15.7 4.3 --- --- YES Above Screening Level--- C
Benzo(a)pyrene ug/kg17.5 5.45 GC-TI402-BC 4.53 - 17.511 / 1250-32-8 17.5 0.43 --- --- YES Above Screening Level--- C
Benzo(b)fluoranthene ug/kg9.61 4.82 GC-TI402-BC 2.74 - 9.619 / 12205-99-2 9.61 4.3 --- --- YES Above Screening Level--- C
Benzo(g,h,i)perylene ug/kg28.2 13.6 GC-TI401-BC 13.6 - 28.212 / 12191-24-2 28.2 4100 --- --- NO Below Screening Level--- N
Benzo(k)fluoranthene ug/kg8.76 3.65 GC-TI402-BC 2.44 - 8.768 / 12207-08-9 8.76 43 --- --- NO Below Screening Level--- C
Chrysene ug/kg13.6 5.03 GC-TI402-BC 2.91 - 13.68 / 12218-01-9 13.6 430 --- --- NO Below Screening Level--- C
Dibenz(a,h)anthracene ug/kg5.13 2.59 GC-TI402-BC 2.59 - 5.1312 / 1253-70-3 5.13 0.43 --- --- YES Above Screening Level--- C
Fluoranthene ug/kg21.9 8.44 GC-TI402-BC 8.44 - 21.912 / 12206-44-0 21.9 5400 --- --- NO Below Screening Level--- N
Fluorene ug/kg26.8 6.43 GC-TI404-BC 6.43 - 26.812 / 1286-73-7 26.8 5400 --- --- NO Below Screening Level--- N
Indeno(1,2,3-c,d)pyrene ug/kg12.3 7.46 GC-TI402-BC 7.46 - 12.312 / 12193-39-5 12.3 4.3 --- --- YES Above Screening Level--- C
Phenanthrene ug/kg44.1 12.2 GC-TI401-BC 12.2 - 44.112 / 1285-01-8 44.1 41000 --- --- NO Below Screening Level--- N
Pyrene ug/kg28.6 9.88 GC-TI401-BC 9.88 - 28.612 / 12129-00-0 28.6 4100 --- --- NO Below Screening Level--- N
P,P'-DDE ug/kg2.79 2.05 GC-TI402-BC 2.05 - 2.7912 / 1272-55-9 2.79 9.3 --- --- NO Below Screening Level--- C
PCB Dioxin ng/kg5.54 3.91 GC-TI405-BC 3.91 - 5.5412 / 12PCBDioxin 5.54 0.020 --- --- YES Above Screening Level--- C
PCB Nondioxin ng/kg167000 115000 GC-TI405-BC 115000 - 16700012 / 12PCBNonDioxin 167000 1600 --- --- YES Above Screening Level--- C
Total PCB Congeners ng/kg194000 133000 GC-TI405-BC 133000 - 19400012 / 12PCBTotalCongen 194000 1600 --- --- YES Above Screening Level--- C
Arsenic mg/kg1.47 0.902 GC-TI401-BC 0.902 - 1.4712 / 127440-38-2 1.47 0.0021 --- --- YES Above Screening Level--- C
Calcium mg/kg1740 1050 GC-TI406-BC 1050 - 174012 / 127440-70-2 1740 --- --- --- NO Essential Nutrient---
Copper mg/kg11.7 8.19 GC-TI406-BC 8.19 - 11.712 / 127440-50-8 11.7 5.4 --- --- YES Above Screening Level--- N
Iron mg/kg13.3 8.43 GC-TI406-BC 7.96 - 13.36 / 127439-89-6 13.3 95 --- --- NO Essential Nutrient--- N
Magnesium mg/kg395 318 GC-TI406-BC 318 - 39512 / 127439-95-4 395 --- --- --- NO Essential Nutrient---
Manganese mg/kg3.24 2.20 GC-TI405-BC 2.20 - 3.2412 / 127439-96-5 3.24 19 --- --- NO Below Screening Level--- N
Mercury mg/kg0.142 0.0792 GC-TI402-BC 0.0792 - 0.14212 / 127439-97-6 0.142 0.022 --- --- YES Above Screening Level--- N
Potassium mg/kg2390 1910 GC-TI406-BC 1910 - 239012 / 127440-09-7 2390 --- --- --- NO Essential Nutrient---
Silver mg/kg0.463 0.421 GC-TI401-BC 0.421 - 0.4972 / 127440-22-4 0.463 0.68 --- --- NO Below Screening Level--- N
Sodium mg/kg3490 2630 GC-TI401-BC, GC-TI402-BC
2630 - 349012 / 127440-23-5 3490 --- --- --- NO Essential Nutrient---
Zinc mg/kg24.0 18.9 GC-TI406-BC 18.9 - 24.012 / 127440-66-6 24.0 41 --- --- NO Below Screening Level--- N
PAGE 1 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA1 1/25/2011 3:36:40 PM
TABLE H-2.11
Blue Crab Edible Tissue and Hepatopancreas from Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Crab in Gowanus Canal
Cyanide, Total mg/kg0.847 0.527 GC-TI401-BC 0.527 - 1.2510 / 1257-12-5 0.847 2.7 --- --- NO Below Screening Level--- N
PAGE 2 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA1 1/25/2011 3:36:40 PM
TABLE H-2.12
All Surface Sediment in Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Sediment
Overflow Surface Sediment
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
1,2-dichloroethane ug/kg45.0 J3.90 323 3.90 - 45.06 / 27107-06-2 45.0 430 --- --- NO Below Screening Level--- C
1,4-dichlorobenzene ug/kg240 J7.60 301 5.00 - 2403 / 26106-46-7 240 2400 --- --- NO Below Screening Level--- C
Acetone ug/kg90.0 21.0 314 9.90 - 90.011 / 2767-64-1 90.0 6100000 --- --- NO Below Screening Level--- N
Benzene ug/kg110 J6.80 304 5.00 - 1104 / 2771-43-2 110 1100 --- --- NO Below Screening Level--- C
Carbon disulfide ug/kg89.0 4.70 314 4.70 - 89.09 / 2775-15-0 89.0 82000 --- --- NO Below Screening Level--- N
Chlorobenzene ug/kg53.0 53.0 301 5.00 - 53.01 / 27108-90-7 53.0 29000 --- --- NO Below Screening Level--- N
Cyclohexane ug/kg14.0 J8.00 304 5.00 - 23.03 / 27110-82-7 14.0 120000 --- --- NO Below Screening Level--- N
Ethylbenzene ug/kg3600 J5.30 315 5.00 - 36008 / 27100-41-4 3600 5400 --- --- NO Below Screening Level--- C
Isopropylbenzene (cumene) ug/kg760 J4.60 315 4.60 - 7607 / 2798-82-8 760 210000 --- --- NO Below Screening Level--- N
m, p xylenes ug/kg810 J5.40 315 5.00 - 8105 / 27179601-23-1 810 340000 --- --- NO Below Screening Level--- N
Methylcyclohexane ug/kg170 J15.0 314 5.00 - 1703 / 27108-87-2 170 --- --- --- NO No toxicity information---
Methylene chloride ug/kg7.70 J2.20 306 2.20 - 23.06 / 2775-09-2 7.70 11000 --- --- NO Below Screening Level--- C
o-xylene (1,2-dimethylbenzene) ug/kg1200 J19.0 315 5.00 - 12005 / 2795-47-6 1200 380000 --- --- NO Below Screening Level--- N
Tert-butyl methyl ether ug/kg34.0 J34.0 304 5.00 - 34.01 / 271634-04-4 34.0 43000 --- --- NO Below Screening Level--- C
Tetrachloroethylene(PCE) ug/kg11.0 J5.80 302 5.00 - 23.02 / 27127-18-4 11.0 550 --- --- NO Below Screening Level--- C
Toluene ug/kg36.0 J5.80 314 5.00 - 36.04 / 27108-88-3 36.0 500000 --- --- NO Below Screening Level--- N
Trichloroethylene (TCE) ug/kg4.20 J4.20 301 4.20 - 23.01 / 2779-01-6 4.20 2800 --- --- NO Below Screening Level--- C
Trichlorofluoromethane ug/kg8.90 J4.60 302 4.60 - 23.03 / 2775-69-4 8.90 79000 --- --- NO Below Screening Level--- N
2-methylnaphthalene ug/kg870000 J190 315 120 - 87000016 / 2791-57-6 870000 31000 --- --- YES Above Screening Level--- N
Acenaphthene ug/kg580000 J160 315 160 - 58000021 / 2783-32-9 580000 340000 --- --- YES Above Screening Level--- N
Acenaphthylene ug/kg150000 J270 314 160 - 15000014 / 27208-96-8 150000 340000 --- --- NO Below Screening Level--- N
Anthracene ug/kg610000 J330 315 250 - 61000024 / 27120-12-7 610000 1700000 --- --- NO Below Screening Level--- N
Benzo(a)anthracene ug/kg490000 J1100 315 1100 - 49000027 / 2756-55-3 490000 150 --- --- YES Above Screening Level--- C
Benzo(a)pyrene ug/kg200000 J1200 314 250 - 20000026 / 2750-32-8 200000 15 --- --- YES Above Screening Level--- C
Benzo(b)fluoranthene ug/kg210000 J1000 314 250 - 21000026 / 27205-99-2 210000 150 --- --- YES Above Screening Level--- C
Benzo(g,h,i)perylene ug/kg74000 J610 314 260 - 7400026 / 27191-24-2 74000 170000 --- --- NO Below Screening Level--- N
Benzo(k)fluoranthene ug/kg120000 J820 314 250 - 12000026 / 27207-08-9 120000 1500 --- --- YES Above Screening Level--- C
Biphenyl (diphenyl) ug/kg71000 J650 315 650 - 2300002 / 2792-52-4 71000 210000 --- --- NO Below Screening Level--- N
Bis(2-ethylhexyl) phthalate ug/kg57000 J2600 314 2600 - 16000021 / 27117-81-7 57000 35000 --- --- YES Above Screening Level--- C
Carbazole ug/kg1400 J1400 308A 1400 - 2300001 / 2786-74-8 1400 --- --- --- NO No toxicity information---
PAGE 1 of 3\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 1/25/2011 3:54:46 PM
TABLE H-2.12
All Surface Sediment in Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Sediment
Overflow Surface Sediment
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
Chrysene ug/kg490000 J730 315 730 - 49000027 / 27218-01-9 490000 15000 --- --- YES Above Screening Level--- C
Dibenz(a,h)anthracene ug/kg14000 200 314 200 - 1400023 / 2753-70-3 14000 15 --- --- YES Above Screening Level--- C
Dibenzofuran ug/kg1100 J1100 319 1100 - 2300001 / 27132-64-9 1100 7800 --- --- NO Below Screening Level--- N
Di-n-butyl phthalate ug/kg550 J510 318 510 - 2300002 / 2784-74-2 550 610000 --- --- NO Below Screening Level--- N
Di-n-octylphthalate ug/kg9300 J9300 307A 6200 - 2300001 / 27117-84-0 9300 35000 --- --- NO Below Screening Level--- N
Fluoranthene ug/kg630000 J1200 314 1200 - 63000027 / 27206-44-0 630000 230000 --- --- YES Above Screening Level--- N
Fluorene ug/kg540000 J130 315 130 - 54000017 / 2786-73-7 540000 230000 --- --- YES Above Screening Level--- N
Indeno(1,2,3-c,d)pyrene ug/kg120000 J1000 314 1000 - 12000027 / 27193-39-5 120000 150 --- --- YES Above Screening Level--- C
Naphthalene ug/kg1600000 J120 315 120 - 160000019 / 2791-20-3 1600000 3600 --- --- YES Above Screening Level--- C
Phenanthrene ug/kg1100000 J510 315 510 - 110000026 / 2785-01-8 1100000 1700000 --- --- NO Below Screening Level--- N
Pyrene ug/kg670000 J1400 314 230 - 67000026 / 27129-00-0 670000 170000 --- --- YES Above Screening Level--- N
Alpha-chlordane ug/kg14.0 J6.70 308A 2.70 - 5302 / 275103-71-9 14.0 1600 --- --- NO Below Screening Level--- C
Beta endosulfan ug/kg13.0 J13.0 308A 5.30 - 10001 / 2733213-65-9 13.0 37000 --- --- NO Below Screening Level--- N
Endosulfan sulfate ug/kg21.0 J21.0 308A 5.30 - 10001 / 271031-07-8 21.0 37000 --- --- NO Below Screening Level--- N
Gamma-chlordane ug/kg29.0 J5.90 308A 2.70 - 5303 / 275103-74-2 29.0 1600 --- --- NO Below Screening Level--- C
Methoxychlor ug/kg33.0 J33.0 308A 27.0 - 53001 / 2772-43-5 33.0 31000 --- --- NO Below Screening Level--- N
P,P'-DDD ug/kg1100 NJ7.90 315 7.90 - 11005 / 572-54-8 1100 2000 --- --- NO Below Screening Level--- C
P,P'-DDE ug/kg16.0 NJ16.0 308A 5.30 - 10001 / 2672-55-9 16.0 1400 --- --- NO Below Screening Level--- C
Aroclor 1016 ug/kg290 140 318 41.0 - 2904 / 2712674-11-2 290 390 --- --- NO Below Screening Level--- N
Aroclor 1248 ug/kg2200 J230 316 41.0 - 22002 / 2712672-29-6 2200 220 --- --- YES Above Screening Level--- C
Aroclor 1254 ug/kg590 J590 308A 48.0 - 5901 / 2711097-69-1 590 110 --- --- YES Above Screening Level--- N
Aroclor 1260 ug/kg3400 J150 314 41.0 - 34007 / 2711096-82-5 3400 220 --- --- YES Above Screening Level--- C
PCB Dioxin ng/kg111 0.241 314 0.241 - 11119 / 19PCBDioxin 111 3.7 --- --- YES Above Screening Level--- C
PCB Nondioxin ng/kg14700000 92500 314 92500 - 1470000019 / 19PCBNonDioxin 14700000 220000 --- --- YES Above Screening Level--- C
Total PCB Congeners ng/kg15100000 99500 314 99500 - 1510000019 / 19PCBTotalCongen 15100000 110000 --- --- YES Above Screening Level--- N
Aluminum mg/kg18900 J4870 310 4870 - 1890027 / 277429-90-5 18900 7700 --- --- YES Above Screening Level--- N
Arsenic mg/kg44.7 3.40 308A 3.40 - 44.727 / 277440-38-2 44.7 0.39 --- --- YES Above Screening Level--- C
Barium mg/kg631 J83.1 317 83.1 - 63127 / 277440-39-3 631 1500 --- --- NO Below Screening Level--- N
Beryllium mg/kg0.46 J0.11 309 0.11 - 1.6012 / 277440-41-7 0.46 16 --- --- NO Below Screening Level--- N
Cadmium mg/kg20.2 J1.50 308A 1.50 - 20.227 / 277440-43-9 20.2 7 --- --- YES Above Screening Level--- N
PAGE 2 of 3\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 1/25/2011 3:54:46 PM
TABLE H-2.12
All Surface Sediment in Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Sediment
Overflow Surface Sediment
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
Calcium mg/kg11300 J4890 313 4890 - 1130027 / 277440-70-2 11300 --- --- --- NO Essential Nutrient---
Chromium mg/kg139 J22.7 314 22.7 - 13927 / 277440-47-3 139 0.29 --- --- YES Above Screening Level--- C
Cobalt mg/kg14.8 J6.50 318 6.50 - 17.114 / 277440-48-4 14.8 2.3 --- --- YES Above Screening Level--- N
Copper mg/kg790 85.8 308A 85.8 - 79027 / 277440-50-8 790 310 --- --- YES Above Screening Level--- N
Cyanide, Total mg/kg18.0 J0.54 302 0.54 - 18.014 / 2757-12-5 18.0 160 --- --- NO Below Screening Level--- N
Iron mg/kg87000 12400 308A 12400 - 8700027 / 277439-89-6 87000 5500 --- --- YES Above Screening Level--- N
Lead mg/kg4220 146 308A 146 - 422027 / 277439-92-1 4220 400 --- --- YES Above Screening Level--- N
Magnesium mg/kg11400 J4210 318 4210 - 1140027 / 277439-95-4 11400 --- --- --- NO Essential Nutrient---
Manganese mg/kg480 89.1 308A 89.1 - 48027 / 277439-96-5 480 180 --- --- YES Above Screening Level--- N
Mercury mg/kg2.30 J0.59 313 0.59 - 2.3027 / 277439-97-6 2.30 2.3 --- --- NO Below Screening Level--- N
Nickel mg/kg84.5 J18.1 314 18.1 - 84.527 / 277440-02-0 84.5 150 --- --- NO Below Screening Level--- N
Potassium mg/kg4410 J730 310 730 - 441027 / 277440-09-7 4410 --- --- --- NO Essential Nutrient---
Selenium mg/kg4.90 J0.74 310 0.74 - 12.015 / 277782-49-2 4.90 39 --- --- NO Below Screening Level--- N
Silver mg/kg6.80 J1.80 310 1.20 - 6.8022 / 277440-22-4 6.80 39 --- --- NO Below Screening Level--- N
Sodium mg/kg18700 J2610 322 2610 - 1870027 / 277440-23-5 18700 --- --- --- NO Essential Nutrient---
Vanadium mg/kg61.2 J19.4 316 19.4 - 61.227 / 277440-62-2 61.2 39 --- --- YES Above Screening Level--- N
Zinc mg/kg1520 240 308A 240 - 152017 / 177440-66-6 1520 2300 --- --- NO Below Screening Level--- N
PAGE 3 of 3\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 1/25/2011 3:54:46 PM
TABLE H-2.13
Surface Water in Canal, Wet Weather - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water
Overflow Surface Water
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Canal Overflow – Surface Water
1,2,4-trichlorobenzene ug/l0.12 J0.12 305 0.12 - 0.501 / 26120-82-1 0.12 0.41 70 NRWQC NO Below Screening Level--- N
1,3-dichlorobenzene ug/l0.13 J0.13 303, 305 0.13 - 0.502 / 26541-73-1 0.13 37 960 NRWQC NO Below Screening Level--- N
1,4-dichlorobenzene ug/l0.87 0.12 306 0.12 - 0.8714 / 26106-46-7 0.87 0.43 190 NRWQC YES Above Screening Level--- C
Acetone ug/l12.0 12.0 307B 5.00 - 15.01 / 2667-64-1 12.0 2200 --- --- NO Below Screening Level--- N
Benzene ug/l2.90 0.36 316 0.36 - 2.9016 / 2671-43-2 2.90 0.41 10 NYSDEC YES Above Screening Level--- C
Carbon disulfide ug/l0.17 J0.14 308B, 313 0.14 - 0.505 / 2675-15-0 0.17 100 --- --- NO Below Screening Level--- N
Chlorobenzene ug/l0.33 J0.12 306 0.12 - 0.5017 / 26108-90-7 0.33 9.1 400 NYSDEC NO Below Screening Level--- N
Chloroform ug/l0.69 0.50 321 0.50 - 0.6914 / 2667-66-3 0.69 0.19 470 NRWQC YES Above Screening Level--- C
cis-1,2-dichloroethylene ug/l0.51 0.21 319 0.21 - 0.5117 / 26156-59-2 0.51 37 --- --- NO Below Screening Level--- N
Ethylbenzene ug/l2.60 0.18 316 0.18 - 2.6021 / 26100-41-4 2.60 1.5 2100 NRWQC YES Above Screening Level--- C
Isopropylbenzene (cumene) ug/l0.20 J0.096 316 0.096 - 0.504 / 2698-82-8 0.20 68 --- --- NO Below Screening Level--- N
m, p xylenes ug/l2.60 0.18 316 0.18 - 2.6022 / 26179601-23-1 2.60 120 --- --- NO Below Screening Level--- N
Methyl acetate ug/l0.44 J0.44 317 0.44 - 0.501 / 2679-20-9 0.44 3700 --- --- NO Below Screening Level--- N
Methylene chloride ug/l3.40 0.99 321 0.50 - 3.409 / 2675-09-2 3.40 4.8 200 NYSDEC NO Below Screening Level--- C
o-xylene (1,2-dimethylbenzene) ug/l5.10 0.13 316 0.13 - 5.1020 / 2695-47-6 5.10 120 --- --- NO Below Screening Level--- N
Tetrachloroethylene(PCE) ug/l40.0 J0.70 319 0.50 - 40.024 / 26127-18-4 40.0 0.11 3.3 NRWQC YES Above Screening Level--- C
Toluene ug/l16.0 0.85 316 0.50 - 16.024 / 26108-88-3 16.0 230 6000 NYSDEC NO Below Screening Level--- N
trans-1,3-dichloropropene ug/l0.16 J0.16 306 0.16 - 0.501 / 2610061-02-6 0.16 0.43 --- --- NO Below Screening Level--- C
Trichloroethylene (TCE) ug/l0.12 J0.10 320 0.10 - 0.502 / 2679-01-6 0.12 2 30 NRWQC NO Below Screening Level--- C
2-methylnaphthalene ug/l3.00 0.17 316 0.10 - 3.003 / 2691-57-6 3.00 15 --- --- NO Below Screening Level--- N
Acenaphthene ug/l0.40 0.095 313 0.095 - 1.0020 / 2683-32-9 0.40 220 990 NRWQC NO Below Screening Level--- N
Anthracene ug/l0.095 J0.095 302 0.095 - 1.001 / 26120-12-7 0.095 1100 40000 NRWQC NO Below Screening Level--- N
Benzo(a)anthracene ug/l0.15 0.074 302 0.074 - 1.004 / 2656-55-3 0.15 0.029 0.018 NRWQC YES Above Screening Level--- C
Benzo(a)pyrene ug/l0.30 0.14 309 0.10 - 1.006 / 2650-32-8 0.30 0.0029 0.018 NRWQC YES Above Screening Level--- C
Benzo(b)fluoranthene ug/l0.33 0.12 319 0.10 - 1.0016 / 26205-99-2 0.33 0.029 0.018 NRWQC YES Above Screening Level--- C
Benzo(g,h,i)perylene ug/l1.50 J0.13 308A 0.10 - 1.5023 / 26191-24-2 1.50 110 --- --- NO Below Screening Level--- N
Benzo(k)fluoranthene ug/l0.12 J0.037 319 0.037 - 1.007 / 26207-08-9 0.12 0.29 0.018 NRWQC NO Below Screening Level--- C
Benzyl butyl phthalate ug/l1.10 J0.73 307A 0.73 - 50.03 / 2685-68-7 1.10 35 1900 NRWQC NO Below Screening Level--- C
Caprolactam ug/l1.50 J0.33 320 0.33 - 50.011 / 26105-60-2 1.50 1800 --- --- NO Below Screening Level--- N
Chrysene ug/l0.11 0.057 302 0.057 - 1.003 / 26218-01-9 0.11 2.9 0.018 NRWQC NO Below Screening Level--- C
PAGE 1 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 11/30/2010 4:35:33 PM
TABLE H-2.13
Surface Water in Canal, Wet Weather - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water
Overflow Surface Water
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Canal Overflow – Surface Water
Dibenz(a,h)anthracene ug/l0.11 0.071 303 0.071 - 1.004 / 2653-70-3 0.11 0.0029 0.018 NRWQC YES Above Screening Level--- C
Di-n-butyl phthalate ug/l0.62 J0.28 320 0.28 - 50.012 / 2684-74-2 0.62 370 4500 NRWQC NO Below Screening Level--- N
Di-n-octylphthalate ug/l0.28 J0.23 318 0.23 - 50.03 / 26117-84-0 0.28 4.8 --- --- NO Below Screening Level--- N
Fluoranthene ug/l0.32 0.089 313 0.089 - 1.0022 / 26206-44-0 0.32 150 140 NRWQC NO Below Screening Level--- N
Fluorene ug/l0.32 J0.079 313 0.079 - 1.003 / 2686-73-7 0.32 150 5300 NRWQC NO Below Screening Level--- N
Indeno(1,2,3-c,d)pyrene ug/l1.10 0.16 316 0.10 - 1.1023 / 26193-39-5 1.10 0.029 0.018 NRWQC YES Above Screening Level--- C
Naphthalene ug/l1.40 0.13 316 0.10 - 1.405 / 2691-20-3 1.40 0.14 --- --- YES Above Screening Level--- C
Pentachlorophenol ug/l0.13 J0.13 311 0.13 - 2.001 / 2687-86-5 0.13 0.56 3 NRWQC NO Below Screening Level--- C
Phenanthrene ug/l1.40 0.13 316 0.10 - 1.4014 / 2685-01-8 1.40 1100 --- --- NO Below Screening Level--- N
Pyrene ug/l0.34 0.10 313 0.10 - 1.0022 / 26129-00-0 0.34 110 4000 NRWQC NO Below Screening Level--- N
Arsenic ug/l26.2 6.90 302 6.90 - 26.226 / 267440-38-2 26.2 0.045 0.14 NRWQC YES Above Screening Level--- C
Barium ug/l42.8 J18.4 307A 18.4 - 42.826 / 267440-39-3 42.8 730 --- --- NO Below Screening Level--- N
Calcium ug/l296000 97200 324 97200 - 29600024 / 247440-70-2 296000 --- --- --- NO Essential Nutrient---
Chromium ug/l29.3 J3.90 308B 3.90 - 29.326 / 267440-47-3 29.3 0.043 --- --- YES Above Screening Level--- C
Cobalt ug/l3.90 J3.90 307A 3.90 - 10.01 / 267440-48-4 3.90 1.1 --- --- YES Above Screening Level--- N
Iron ug/l1040 J651 317 651 - 15003 / 267439-89-6 1040 2600 --- --- NO Below Screening Level--- N
Lead ug/l26.8 2.90 317 2.90 - 26.826 / 267439-92-1 26.8 15 --- --- YES Above Screening Level--- N
Magnesium ug/l972000 276000 303 276000 - 97200025 / 257439-95-4 972000 --- --- --- NO Essential Nutrient---
Manganese ug/l65.6 48.4 307A 48.4 - 65.626 / 267439-96-5 65.6 88 100 NRWQC NO Below Screening Level--- N
Mercury ug/l0.089 J0.065 302 0.065 - 0.2019 / 267439-97-6 0.089 1.1 0.0007 NYSDEC NO Below Screening Level--- N
Nickel ug/l29.8 J2.10 308B 2.10 - 29.825 / 257440-02-0 29.8 73 4600 NRWQC NO Below Screening Level--- N
Potassium ug/l290000 88700 324 88700 - 29000024 / 247440-09-7 290000 --- --- --- NO Essential Nutrient---
Selenium ug/l64.6 J13.9 301 13.9 - 64.626 / 267782-49-2 64.6 18 4200 NRWQC YES Above Screening Level--- N
Sodium ug/l7090000 J2340000 301 2340000 - 709000025 / 257440-23-5 7090000 --- --- --- NO Essential Nutrient---
Zinc ug/l75.7 J17.7 318 17.7 - 75.724 / 267440-66-6 75.7 1100 26000 NRWQC NO Below Screening Level--- N
PAGE 2 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA1 11/30/2010 4:35:33 PM
TABLE H-2.14
Blue Crab Edible Tissue from Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Crab in Gowanus Canal
Acenaphthene ug/kg79.4 J9.91 GC-TI401-BC 9.91 - 79.412 / 1283-32-9 79.4 8100 --- --- NO Below Screening Level--- N
Acenaphthylene ug/kg16.4 2.70 GC-TI401-BC 2.70 - 16.46 / 12208-96-8 16.4 8100 --- --- NO Below Screening Level--- N
Anthracene ug/kg12.7 J8.59 GC-TI401-BC 3.22 - 12.72 / 12120-12-7 12.7 41000 --- --- NO Below Screening Level--- N
Benzo(a)anthracene ug/kg21.0 2.86 GC-TI402-BC 2.86 - 21.05 / 1256-55-3 21.0 4.3 --- --- YES Above Screening Level--- C
Benzo(a)pyrene ug/kg22.8 3.61 GC-TI402-BC 3.31 - 22.811 / 1250-32-8 22.8 0.43 --- --- YES Above Screening Level--- C
Benzo(b)fluoranthene ug/kg11.4 3.58 GC-TI402-BC 3.23 - 11.49 / 12205-99-2 11.4 4.3 --- --- YES Above Screening Level--- C
Benzo(g,h,i)perylene ug/kg32.1 8.46 GC-TI401-BC 8.46 - 32.112 / 12191-24-2 32.1 4100 --- --- NO Below Screening Level--- N
Benzo(k)fluoranthene ug/kg10.9 2.61 GC-TI402-BC 2.61 - 10.98 / 12207-08-9 10.9 43 --- --- NO Below Screening Level--- C
Chrysene ug/kg17.5 3.28 GC-TI402-BC 3.23 - 17.58 / 12218-01-9 17.5 430 --- --- NO Below Screening Level--- C
Dibenz(a,h)anthracene ug/kg5.78 3.07 GC-TI402-BC 3.07 - 5.789 / 1253-70-3 5.78 0.43 --- --- YES Above Screening Level--- C
Fluoranthene ug/kg19.3 3.55 GC-TI402-BC 3.23 - 19.311 / 12206-44-0 19.3 5400 --- --- NO Below Screening Level--- N
Fluorene ug/kg28.6 4.97 GC-TI404-BC 3.26 - 28.610 / 1286-73-7 28.6 5400 --- --- NO Below Screening Level--- N
Indeno(1,2,3-c,d)pyrene ug/kg13.7 5.89 GC-TI402-BC 5.89 - 13.712 / 12193-39-5 13.7 4.3 --- --- YES Above Screening Level--- C
Phenanthrene ug/kg43.5 3.26 GC-TI401-BC 3.26 - 43.512 / 1285-01-8 43.5 41000 --- --- NO Below Screening Level--- N
Pyrene ug/kg26.5 J3.55 GC-TI401-BC 3.55 - 26.512 / 12129-00-0 26.5 4100 --- --- NO Below Screening Level--- N
P,P'-DDE ug/kg2.28 J1.14 GC-TI402-BC 1.14 - 3.374 / 1272-55-9 2.28 9.3 --- --- NO Below Screening Level--- C
PCB Dioxin ng/kg4.52 1.92 GC-TI405-BC 1.92 - 4.5212 / 12PCBDioxin 4.52 0.020 --- --- YES Above Screening Level--- C
PCB Nondioxin ng/kg149000 64200 GC-TI405-BC 64200 - 14900012 / 12PCBNonDioxin 149000 1600 --- --- YES Above Screening Level--- C
Total PCB Congeners ng/kg171000 73000 GC-TI405-BC 73000 - 17100012 / 12PCBTotalCongen 171000 1600 --- --- YES Above Screening Level--- C
Arsenic mg/kg1.80 0.89 GC-TI401-BC, GC-TI404-BC
0.89 - 1.8012 / 127440-38-2 1.80 0.0021 --- --- YES Above Screening Level--- C
Calcium mg/kg1970 850 GC-TI405-BC 850 - 197012 / 127440-70-2 1970 --- --- --- NO Essential Nutrient---
Copper mg/kg14.1 9.10 GC-TI401-BC 9.10 - 14.112 / 127440-50-8 14.1 5.4 --- --- YES Above Screening Level--- N
Iron mg/kg13.3 5.60 GC-TI406-BC 5.60 - 13.36 / 127439-89-6 13.3 95 --- --- NO Essential Nutrient--- N
Magnesium mg/kg453 J342 GC-TI401-BC 342 - 45312 / 127439-95-4 453 --- --- --- NO Essential Nutrient---
Manganese mg/kg1.70 0.66 GC-TI402-BC, GC-TI406-BC
0.66 - 1.707 / 127439-96-5 1.70 19 --- --- NO Below Screening Level--- N
Mercury mg/kg0.20 0.10 GC-TI402-BC 0.10 - 0.2012 / 127439-97-6 0.20 0.022 --- --- YES Above Screening Level--- N
Potassium mg/kg2870 2360 GC-TI403-BC 2360 - 287012 / 127440-09-7 2870 --- --- --- NO Essential Nutrient---
Silver mg/kg0.44 J0.40 GC-TI401-BC 0.40 - 0.992 / 127440-22-4 0.44 0.68 --- --- NO Below Screening Level--- N
Sodium mg/kg4100 2660 GC-TI402-BC 2660 - 410012 / 127440-23-5 4100 --- --- --- NO Essential Nutrient---
Zinc mg/kg26.8 19.8 GC-TI401-BC 19.8 - 26.812 / 127440-66-6 26.8 41 --- --- NO Below Screening Level--- N
PAGE 1 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA1 1/25/2011 3:36:05 PM
TABLE H-2.14
Blue Crab Edible Tissue from Canal - Selection of Chemical of Potential Concern
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical
Maximum Detected
Value Units
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Minimum Detected
Value
Location of Maximum
Concentration
Range of Detection
LimitsDetection Frequency
Cas Number
Conc. Used For Screening
Back-ground Value
Screening Toxicity
Value
Potential ARAR/TBC
Value
Potential ARAR/TBC
Source
COPC Flag
Rationale for Contaminant Delection or Selection
Crab in Gowanus Canal
Cyanide, Total mg/kg0.59 J0.28 GC-TI401-BC 0.28 - 2.5010 / 1257-12-5 0.59 2.7 --- --- NO Below Screening Level--- N
PAGE 2 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA1 1/25/2011 3:36:05 PM
TABLE 2.8 Supplement a
PCB Congener Concentrations (ng/kg) in Large Fish Species– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
PCB 77 Dioxin 0.0001 33 0.0033 532 0.0532 391 0.0391 440 0.044 631 0.0631 20.9 R 0.00209 28.4 0.00284 312 0.0312
PCB 81 Dioxin 0.0003 8.72 R 0.002616 26.5 R 0.00795 24.6 R 0.00738 26.6 0.00798 33 R 0.0099 5 U 0 7.74 U 0 2.33 U 0
PCB 105 Dioxin 0.00003 10,300 0.309 4,410 0.1323 3,940 0.1182 4,200 0.126 4,780 0.1434 20,200 0.606 9,860 0.2958 5,460 0.1638
PCB 114 Dioxin 0.00003 616 0.01848 325 0.00975 312 0.00936 327 0.00981 352 0.01056 762 0.02286 488 0.01464 394 0.01182
PCB 118 Dioxin 0.00003 33,500 1.005 13,500 0.405 12,300 0.369 14,200 0.426 16,100 0.483 34,100 1.023 24,400 0.732 15,500 0.465
PCB 123 Dioxin 0.00003 619 0.01857 260 0.0078 231 0.00693 265 0.00795 322 0.00966 811 0.02433 410 0.0123 256 0.00768
PCB 126 Dioxin 0.1 56.5 5.65 24.6 2.46 24.3 2.43 37.6 3.76 42.9 4.29 42.8 4.28 35.4 3.54 26.6 2.66
PCB 156/157 Dioxin 0.00003 4,130 0.1239 1,340 0.0402 1,170 0.0351 1,680 0.0504 1,730 0.0519 3,710 0.1113 2,840 0.0852 2,480 0.0744
PCB 167 Dioxin 0.00003 2,180 0.0654 578 0.01734 497 0.01491 760 0.0228 756 0.02268 1,970 0.0591 1,510 0.0453 1,120 0.0336
PCB 169 Dioxin 0.03 19.9 U 0 11.8 U 0 12.8 U 0 12.2 U 0 11.3 U 0 51.3 U 0 21.6 U 0 22.9 U 0
PCB 189 Dioxin 0.00003 297 0.00891 71.5 0.002145 61.8 0.001854 119 0.00357 116 0.00348 305 0.00915 187 0.00561 164 0.00492
PCB Dioxin 7.2 3.13 3.02 4.46 5.08 6.14 4.73 3.45
PCB 1 NonDioxin 4.12 32.2 16.9 8.14 17.6 9.41 4.79 21.9
PCB 2 NonDioxin 2.29 U 2.27 U 2.27 U 2.03 U 3.93 U 2.28 U 2.32 U 2.31 U
PCB 3 NonDioxin 2.29 U 5.44 3.22 2.65 4.19 3.32 2.32 U 4.38
PCB 4 NonDioxin 78.3 913 443 325 465 90.3 65.8 418
PCB 5 NonDioxin 2.29 U 5.67 4.56 2.39 5.9 2.28 U 2.32 U 4.94
PCB 6 NonDioxin 4.93 154 98.7 71.3 104 10.5 5.33 91.3
PCB 7 NonDioxin 2.29 U 22.4 11.7 10.1 15.7 2.28 U 2.32 U 12
PCB 8 NonDioxin 17.5 459 306 210 323 34.9 17.1 306
PCB 9 NonDioxin 2.29 U 37.2 20.8 15.2 24.5 3.46 2.32 U 19.4
PCB 10 NonDioxin 8.25 113 43.5 39 50.7 8.38 7.78 40.7
PCB 11 NonDioxin 44.1 146 69.6 70.3 106 35.9 47.3 104
PCB 12/13 NonDioxin 7.35 36.1 20.4 20.5 30.3 8.88 8.56 23.5
PCB 14 NonDioxin 2.29 U 2.27 U 2.27 U 2.03 U 3.93 U 2.28 U 2.32 U 2.31 U
PCB 15 NonDioxin 94.6 248 132 101 161 80.4 105 171
PCB 16 NonDioxin 32.3 651 507 399 652 28.2 21.3 429
PCB 17 NonDioxin 85.6 2,530 1,410 1,460 2,230 71.8 69.8 1,260
PCB 18/30 NonDioxin 245 3,690 2,080 1,850 2,830 222 197 1,830
PCB 19 NonDioxin 91.8 929 423 404 570 82.7 77.6 433
PCB 20/28 NonDioxin 10,300 11,000 6,970 6,220 8,260 5,100 9,010 6,310
PCB 21/33 NonDioxin 4.58 U 699 727 602 987 69.6 26.9 639
PCB 22 NonDioxin 152 1,850 1,280 1,140 1,560 209 287 1,160
PCB 23 NonDioxin 2.29 U 7.65 4.44 4.52 8.33 2.28 U 2.32 U 5.24
PCB 24 NonDioxin 6.03 41.9 27.4 24 36 5.1 4.91 23.9
PCB 25 NonDioxin 64.5 1,000 597 640 943 65.6 74.9 570
PCB 26/29 NonDioxin 1,590 2,320 1,320 1,430 2,270 747 1,520 1,370
PCB 27 NonDioxin 45 657 356 417 637 36.5 30 365
PCB 31 NonDioxin 4,220 7,030 4,510 4,490 6,210 2,150 5,010 4,550
PCB 32 NonDioxin 186 1,790 1,100 1,090 1,890 190 250 1,130
PCB 34 NonDioxin 11.6 89.6 46.9 57.3 106 14.9 20.8 67.6
PCB 35 NonDioxin 2.29 U 2.27 U 2.27 U 2.03 U 3.93 U 2.28 U 2.32 U 2.31 U
PCB 36 NonDioxin 2.29 U 2.92 R 2.27 U 2.03 U 3.93 U 2.28 U 2.32 U 2.31 U
GC-TI327-XAE
GC-TI403-SB-FI-1GC-TI402-XAE-FI-1 GC-TI402-XAE-FI-2GC-TI401-WP-FI-1 GC-TI401-WP-FI-2GC-TI401-SB-FI-1 GC-TI401-SB-FI-2GC-TI327-XAE-FI-1
American Eel
GC-TI403-SBGC-TI402-XAE GC-TI402-XAEGC-TI401-WP GC-TI401-WPGC-TI401-SB GC-TI401-SB
American Eel American Eel Striped Bass
Fillet FilletFillet
White Perch White PerchStriped Bass Striped Bass
FilletFillet FilletFillet Fillet
TABLE 2.8 Supplement a
PCB Congener Concentrations (ng/kg) in Large Fish Species– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
GC-TI327-XAE
GC-TI403-SB-FI-1GC-TI402-XAE-FI-1 GC-TI402-XAE-FI-2GC-TI401-WP-FI-1 GC-TI401-WP-FI-2GC-TI401-SB-FI-1 GC-TI401-SB-FI-2GC-TI327-XAE-FI-1
American Eel
GC-TI403-SBGC-TI402-XAE GC-TI402-XAEGC-TI401-WP GC-TI401-WPGC-TI401-SB GC-TI401-SB
American Eel American Eel Striped Bass
Fillet FilletFillet
White Perch White PerchStriped Bass Striped Bass
FilletFillet FilletFillet Fillet
PCB 37 NonDioxin 42.1 788 376 334 409 2.28 U 66.3 R 467
PCB 38 NonDioxin 26.3 15.8 10.6 2.03 U 3.93 U 74.7 33 22.6
PCB 39 NonDioxin 2.29 U 63 41.3 47.5 3.93 U 2.28 U 2.32 U 50.7
PCB 40/41/71 NonDioxin 916 4,960 3,620 4,790 9,780 820 981 5,580
PCB 42 NonDioxin 1,490 3,070 2,100 2,570 4,400 1,490 2,380 2,560
PCB 43 NonDioxin 63.3 542 347 394 664 2.28 U 30.1 460
PCB 44/47/65 NonDioxin 16,900 15,500 9,500 10,800 22,300 27,100 19,000 15,300
PCB 45/51 NonDioxin 333 1,890 1,160 1,360 2,770 330 332 1,460
PCB 46 NonDioxin 37.7 345 235 305 624 27.1 23 258
PCB 48 NonDioxin 38.1 1,630 1,190 1,310 2,100 39.6 41.1 1,110
PCB 49/69 NonDioxin 3,340 12,900 7,590 9,020 20,800 3,760 6,380 13,100
PCB 50/53 NonDioxin 278 1,940 1,050 1,300 2,870 370 181 1,520
PCB 52 NonDioxin 23,600 17,100 11,200 11,800 24,100 57,900 30,100 17,100
PCB 54 NonDioxin 8.87 55 39 32.6 55.3 6.86 8.68 34.4
PCB 55 NonDioxin 2.29 U 2.47 U 3.15 U 99.7 143 5.54 U 18.6 2.54 U
PCB 56 NonDioxin 53.7 2,870 2,210 2,530 4,320 74.1 82.6 2,040
PCB 57 NonDioxin 76.4 102 62 86.7 166 27.6 62.3 145
PCB 58 NonDioxin 83.9 579 379 59.9 110 136 96.4 88.6
PCB 59/62/75 NonDioxin 2,160 1,430 923 1,090 1,940 4,950 2,290 1,470
PCB 60 NonDioxin 2,650 1,890 1,650 1,500 1,950 7,030 2,600 1,530
PCB 61/70/74/76 NonDioxin 11,000 14,400 12,600 13,000 19,000 12,500 9,290 11,100
PCB 63 NonDioxin 857 888 597 685 1,100 1,360 1,010 1,030
PCB 64 NonDioxin 7,240 5,070 3,340 3,890 6,720 34,900 9,850 4,860
PCB 66 NonDioxin 13,100 10,900 9,070 9,060 12,000 23,900 12,400 8,090
PCB 67 NonDioxin 59.1 320 215 281 403 52.4 102 278
PCB 68 NonDioxin 238 289 165 229 406 182 261 397
PCB 72 NonDioxin 449 380 223 321 641 336 442 599
PCB 73 NonDioxin 65.2 111 2.27 U 85.2 210 2.28 U 46.1 131
PCB 78 NonDioxin 19.1 2.45 U 3.12 U 2.03 U 3.93 U 35.5 8.07 U 29.4
PCB 79 NonDioxin 65.4 195 154 177 249 145 142 214
PCB 80 NonDioxin 2.29 U 170 138 2.03 U 3.93 U 5.28 U 7.13 U 2.42 U
PCB 82 NonDioxin 447 792 783 892 1,340 771 615 959
PCB 83/99 NonDioxin 24,000 14,900 10,500 13,200 20,400 24,400 17,300 18,600
PCB 84 NonDioxin 1,950 2,440 1,470 2,260 4,460 4,090 3,240 2,760
PCB 85/116/117 NonDioxin 4,730 3,510 2,830 2,970 4,390 8,510 5,800 4,430
PCB 86/87/97/109/119/125 NonDioxin 4,710 8,320 6,880 7,720 11,700 8,800 -- 8,920
PCB 86/87/97/108/119/125 NonDioxin -- -- -- -- -- -- 8,130 --
PCB 88/91 NonDioxin 1,500 3,380 1,990 2,620 5,350 4,070 3,190 4,520
PCB 89 NonDioxin 2.29 U 60.8 55.1 89.5 163 4.94 4.84 63.7
PCB 90/101/113 NonDioxin 15,900 19,100 14,100 16,500 24,800 25,100 21,000 21,600
PCB 92 NonDioxin 4,530 3,630 2,760 3,410 5,740 7,350 6,400 5,800
PCB 93/95/98/100/102 NonDioxin 6,790 11,900 7,000 9,730 18,800 14,500 11,900 12,600
PCB 94 NonDioxin 22.8 121 62 136 341 40.5 38.3 124
TABLE 2.8 Supplement a
PCB Congener Concentrations (ng/kg) in Large Fish Species– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
GC-TI327-XAE
GC-TI403-SB-FI-1GC-TI402-XAE-FI-1 GC-TI402-XAE-FI-2GC-TI401-WP-FI-1 GC-TI401-WP-FI-2GC-TI401-SB-FI-1 GC-TI401-SB-FI-2GC-TI327-XAE-FI-1
American Eel
GC-TI403-SBGC-TI402-XAE GC-TI402-XAEGC-TI401-WP GC-TI401-WPGC-TI401-SB GC-TI401-SB
American Eel American Eel Striped Bass
Fillet FilletFillet
White Perch White PerchStriped Bass Striped Bass
FilletFillet FilletFillet Fillet
PCB 96 NonDioxin 12.9 88.2 56.9 70.5 169 21.8 11.8 101
PCB 103 NonDioxin 9.34 458 252 326 597 59.9 24.9 540
PCB 104 NonDioxin 2.29 U 19.3 13.1 15.2 27.8 2.28 U 2.32 U 16.6
PCB 106 NonDioxin 2.29 U 2.27 U 4.36 U 2.03 U 3.93 U 2.28 U 14.8 U 2.31 U
PCB 107 NonDioxin 985 1,300 1,070 1,380 1,600 527 -- 1,590
PCB 107/124 NonDioxin -- -- -- -- -- -- 170 --
PCB 108/124 NonDioxin 150 304 342 402 515 104 -- 319
PCB 109 NonDioxin -- -- -- -- -- -- 678 --
PCB 110/115 NonDioxin 14,600 13,300 10,500 12,500 20,700 40,700 25,400 17,100
PCB 111 NonDioxin 77.2 35.5 R 21 32.8 57.2 59.6 67.4 73.3
PCB 112 NonDioxin 2.29 U 2.27 U 2.27 U 3.96 U 3.93 U 2.28 U 2.32 U 3.08 U
PCB 120 NonDioxin 342 149 90.4 143 205 202 219 260
PCB 121 NonDioxin 35.2 19.6 11 16.6 31 31.1 30 34.3
PCB 122 NonDioxin 58.1 66.5 84.3 109 159 99.6 58.4 94.7
PCB 127 NonDioxin 2.29 U 30.4 21.3 2.03 U 3.93 U 42.5 53.4 48.4
PCB 128/166 NonDioxin 5,820 2,870 2,060 2,360 2,990 9,020 6,600 4,910
PCB 129/138/160/163 NonDioxin 43,700 21,400 14,800 20,600 22,800 68,300 48,500 33,600
PCB 130 NonDioxin 1,540 1,030 752 933 1,260 2,970 2,250 1,900
PCB 131 NonDioxin 40.9 136 101 133 163 129 119 154
PCB 132 NonDioxin 1,870 3,350 2,440 3,380 4,790 5,950 5,010 4,460
PCB 133 NonDioxin 1,130 445 293 501 721 1,120 972 987
PCB 134/143 NonDioxin 516 1,620 956 1,460 944 1,680 1,300 897
PCB 135/151/154 NonDioxin 4,120 6,460 4,500 6,450 8,390 9,170 6,620 8,340
PCB 136 NonDioxin 613 1,620 899 1,320 2,130 2,450 1,750 1,870
PCB 137 NonDioxin 1,490 790 653 819 949 1,680 1,190 1,440
PCB 139/140 NonDioxin 605 382 276 366 477 923 766 610
PCB 141 NonDioxin 2,080 1,670 1,810 2,150 2,470 6,200 4,070 2,800
PCB 142 NonDioxin 2.63 U 2.27 U 2.27 U 2.03 U 5.82 2.28 U 3.45 U 2.31 U
PCB 144 NonDioxin 228 744 553 700 695 529 419 719
PCB 145 NonDioxin 2.29 U 3.6 2.83 3.27 R 5.17 2.28 U 2.32 U 4.69
PCB 146 NonDioxin 10,100 4,410 3,170 5,080 5,860 10,600 9,790 9,030
PCB 147/149 NonDioxin 10,400 15,500 10,200 13,400 17,300 38,900 27,800 19,600
PCB 148 NonDioxin 191 115 62.6 100 155 192 167 207
PCB 150 NonDioxin 2.29 U 105 53.9 77.2 120 25.9 11.2 109
PCB 152 NonDioxin 2.29 U 21.8 13.4 18.8 33.7 6.89 3.1 23.6
PCB 153/168 NonDioxin 71,300 25,000 17,500 25,100 26,400 73,700 52,900 41,100
PCB 155 NonDioxin 114 50.2 48.5 84.7 90.5 76 102 60.5
PCB 158 NonDioxin 3,430 1,710 1,320 1,690 1,540 6,440 4,870 2,380
PCB 159 NonDioxin 54.1 61.7 55.6 78.5 104 191 124 114
PCB 161 NonDioxin 2.29 U 2.27 U 2.27 U 2.03 U 3.93 U 2.28 U 2.47 U 2.31 U
PCB 162 NonDioxin 125 54.5 47.2 R 98.7 R 122 R 89.3 67.7 99.2
PCB 164 NonDioxin 687 582 578 818 1,160 2,040 1,530 1,120
PCB 165 NonDioxin 83.7 36.3 19.3 32.3 58 58.1 69.5 83.9
TABLE 2.8 Supplement a
PCB Congener Concentrations (ng/kg) in Large Fish Species– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
GC-TI327-XAE
GC-TI403-SB-FI-1GC-TI402-XAE-FI-1 GC-TI402-XAE-FI-2GC-TI401-WP-FI-1 GC-TI401-WP-FI-2GC-TI401-SB-FI-1 GC-TI401-SB-FI-2GC-TI327-XAE-FI-1
American Eel
GC-TI403-SBGC-TI402-XAE GC-TI402-XAEGC-TI401-WP GC-TI401-WPGC-TI401-SB GC-TI401-SB
American Eel American Eel Striped Bass
Fillet FilletFillet
White Perch White PerchStriped Bass Striped Bass
FilletFillet FilletFillet Fillet
PCB 170 NonDioxin 5,240 2,200 1,770 2,820 2,800 9,430 5,380 3,900
PCB 171/173 NonDioxin 2,110 1,100 725 1,110 1,040 3,990 2,890 1,560
PCB 172 NonDioxin 962 388 334 567 647 1,630 958 806
PCB 174 NonDioxin 994 1,120 1,010 1,380 1,850 3,590 2,390 1,870
PCB 175 NonDioxin 395 193 137 216 194 612 429 287
PCB 176 NonDioxin 78.3 365 212 282 324 371 273 341
PCB 177 NonDioxin 2,420 1,900 1,220 1,330 1,840 7,220 5,160 2,720
PCB 178 NonDioxin 2,850 1,110 730 1,310 1,370 3,280 2,490 1,920
PCB 179 NonDioxin 910 1,240 801 1,190 1,430 1,930 1,490 1,260
PCB 180/193 NonDioxin 19,000 7,480 5,860 8,940 8,500 26,200 16,800 12,600
PCB 181 NonDioxin 64.9 39.1 27.4 41 54.4 108 90.1 66.5
PCB 182 NonDioxin 61.3 41 27.3 42.4 58.8 74.9 68.4 78.2
PCB 183/185 NonDioxin 7,510 3,590 2,320 3,790 3,210 11,900 8,470 4,990
PCB 184 NonDioxin 55.4 22.8 11.7 29.2 29.7 41.1 50.3 28.6
PCB 186 NonDioxin 2.29 U 2.27 U 2.27 U 2.03 U 3.93 U 2.28 U 2.32 U 2.31 U
PCB 187 NonDioxin 16,900 8,580 5,570 8,360 9,080 22,900 17,500 12,200
PCB 188 NonDioxin 89.1 51.2 26 43 53.3 66.6 79.8 65.6
PCB 190 NonDioxin 1,310 650 463 691 657 2,590 1,900 1,010
PCB 191 NonDioxin 298 129 100 150 125 527 342 193
PCB 192 NonDioxin 2.29 U 2.27 U 2.27 U 5.43 4.01 2.28 U 2.32 U 2.31 U
PCB 194 NonDioxin 2,770 742 825 1,360 1,360 2,820 1,890 1,960
PCB 195 NonDioxin 733 382 308 471 461 1,590 1,050 640
PCB 196 NonDioxin 1,490 628 495 789 767 2,200 1,590 1,080
PCB 197/200 NonDioxin 341 155 105 155 174 337 334 246
PCB 198/199 NonDioxin 3,570 1,290 1,080 1,720 1,960 3,880 3,200 2,720
PCB 201 NonDioxin 713 270 188 309 300 579 519 460
PCB 202 NonDioxin 2,470 700 511 922 960 1,220 1,390 1,420
PCB 203 NonDioxin 2,840 1,230 887 1,460 1,530 3,560 3,280 2,200
PCB 204 NonDioxin 5.93 2.6 R 2.27 U 5.18 6.73 4.58 5.59 4.9
PCB 205 NonDioxin 111 51.4 38.6 66.2 66.6 190 133 95.3
PCB 206 NonDioxin 1,800 611 521 816 1,200 1,400 1,610 1,300
PCB 207 NonDioxin 219 96.1 75.8 125 165 207 236 186
PCB 208 NonDioxin 847 272 234 287 431 473 576 598
PCB 209 NonDioxin 869 286 264 448 606 496 759 585
PCB Nondioxin 424,000 348,000 244,000 302,000 437,000 684,000 480,000 409,000
Total PCB Congeners 475,000 369,000 263,000 324,000 462,000 746,000 519,000 435,000
TABLE 2.8 Supplement a
PCB Congener Concentrations (ng/kg) in Large Fish Species– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 77 Dioxin 0.0001
PCB 81 Dioxin 0.0003
PCB 105 Dioxin 0.00003
PCB 114 Dioxin 0.00003
PCB 118 Dioxin 0.00003
PCB 123 Dioxin 0.00003
PCB 126 Dioxin 0.1
PCB 156/157 Dioxin 0.00003
PCB 167 Dioxin 0.00003
PCB 169 Dioxin 0.03
PCB 189 Dioxin 0.00003
PCB Dioxin
PCB 1 NonDioxin
PCB 2 NonDioxin
PCB 3 NonDioxin
PCB 4 NonDioxin
PCB 5 NonDioxin
PCB 6 NonDioxin
PCB 7 NonDioxin
PCB 8 NonDioxin
PCB 9 NonDioxin
PCB 10 NonDioxin
PCB 11 NonDioxin
PCB 12/13 NonDioxin
PCB 14 NonDioxin
PCB 15 NonDioxin
PCB 16 NonDioxin
PCB 17 NonDioxin
PCB 18/30 NonDioxin
PCB 19 NonDioxin
PCB 20/28 NonDioxin
PCB 21/33 NonDioxin
PCB 22 NonDioxin
PCB 23 NonDioxin
PCB 24 NonDioxin
PCB 25 NonDioxin
PCB 26/29 NonDioxin
PCB 27 NonDioxin
PCB 31 NonDioxin
PCB 32 NonDioxin
PCB 34 NonDioxin
PCB 35 NonDioxin
PCB 36 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
32.9 0.00329 33.6 0.00336 31.1 0.00311 301 J 0.0301 287 0.0287 50.8 0.00508
2.29 U 0 5.25 U 0 2.26 U 0 28.2 R 0.00846 17.1 R 0.00513 8.95 R 0.002685
22,200 0.666 14,100 0.423 17,300 0.519 4,990 J 0.1497 4,670 0.1401 33,400 1.002
1,190 0.0357 827 0.02481 1,030 0.0309 412 J 0.01236 375 0.01125 1,970 0.0591
35,800 1.074 34,600 1.038 32,500 0.975 15,700 J 0.471 14,600 0.438 73,800 2.214
1,110 0.0333 816 0.02448 901 0.02703 315 J 0.00945 248 0.00744 1,840 0.0552
88.7 8.87 51.7 5.17 72.7 7.27 35.4 J 3.54 21.1 2.11 101 10.1
8,430 0.2529 5,090 0.1527 6,770 0.2031 2,050 J 0.0615 2,050 0.0615 13,800 0.414
3,620 0.1086 2,130 0.0639 2,850 0.0855 914 J 0.02742 937 0.02811 7,080 0.2124
76 U 0 21.3 U 0 55.6 U 0 19.5 U 0 20.6 U 0 70.7 U 0
485 0.01455 346 0.01038 388 0.01164 136 J 0.00408 136 0.00408 1,200 0.036
11.1 6.91 9.13 4.31 2.83 14.1
12.8 9.06 9.54 6.63 J 4.84 3.03
2.29 U 2.3 U 2.26 U 2.29 U 2.32 U 2.28 U
2.44 R 2.46 2.26 U 2.46 J 2.32 U 2.28 U
159 88 92.2 340 J 196 129
2.29 U 2.3 U 2.26 U 4.23 R 2.69 R 2.28 U
10.8 6.55 7.8 60.4 J 56.7 5.28
2.29 U 2.3 U 2.26 U 8.59 J 6.48 2.28 U
34.1 18.6 23.7 281 J 194 34.1
3.25 2.3 U 2.93 14.4 J 11.5 2.57
45.7 U 6.72 9.35 34.8 J 18.3 10.7
61.6 40.1 38.8 39.1 J 24 47.4
12.3 8.71 8.6 15.4 J 10.3 R 12.2
2.29 U 2.3 U 2.26 U 2.29 U 2.32 U 2.28 U
123 79.7 102 104 J 66 160
59.6 24.5 33.9 U 576 J 306 63.2
174 87.9 82.9 1,360 J 816 139
606 392 344 2,110 J 1,410 449
218 131 116 349 J 200 167
8,510 5,270 5,810 6,550 J 4,410 10,200
91.4 U 18.6 67.8 U 693 J 407 46.1
795 407 323 1,230 J 880 359
45.7 U 2.3 U 33.9 U 3.98 J 3.34 2.28 U
45.7 U 8.28 33.9 U 29.8 J 19.9 11.6
213 101 119 477 J 374 72.3
1,190 660 882 1,130 J 833 1,280
107 58.1 61.2 356 J 218 61.3
3,030 1,630 2,250 3,670 J 2,300 3,780
543 270 306 1,140 J 722 301
45.7 U 21.7 33.9 U 39.8 J 36.5 10.4
45.7 U 2.3 U 33.9 U 2.29 U 2.32 U 2.28 U
45.7 U 2.3 U 33.9 U 2.29 U 2.32 U 2.28 U
GC-TI406-XAE-FI-1GC-TI406-SB-FI-1 GC-TI406-SB-FI-2GC-TI403-XAE-FI-1 GC-TI403-XAE-FI-2 GC-TI403-XAE-FI-3
GC-TI406-XAEGC-TI406-SB GC-TI406-SBGC-TI403-XAE GC-TI403-XAE GC-TI403-XAE
American EelAmerican EelAmerican Eel American Eel Striped Bass Striped Bass
FilletFillet FilletFillet Fillet Fillet
TABLE 2.8 Supplement a
PCB Congener Concentrations (ng/kg) in Large Fish Species– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 37 NonDioxin
PCB 38 NonDioxin
PCB 39 NonDioxin
PCB 40/41/71 NonDioxin
PCB 42 NonDioxin
PCB 43 NonDioxin
PCB 44/47/65 NonDioxin
PCB 45/51 NonDioxin
PCB 46 NonDioxin
PCB 48 NonDioxin
PCB 49/69 NonDioxin
PCB 50/53 NonDioxin
PCB 52 NonDioxin
PCB 54 NonDioxin
PCB 55 NonDioxin
PCB 56 NonDioxin
PCB 57 NonDioxin
PCB 58 NonDioxin
PCB 59/62/75 NonDioxin
PCB 60 NonDioxin
PCB 61/70/74/76 NonDioxin
PCB 63 NonDioxin
PCB 64 NonDioxin
PCB 66 NonDioxin
PCB 67 NonDioxin
PCB 68 NonDioxin
PCB 72 NonDioxin
PCB 73 NonDioxin
PCB 78 NonDioxin
PCB 79 NonDioxin
PCB 80 NonDioxin
PCB 82 NonDioxin
PCB 83/99 NonDioxin
PCB 84 NonDioxin
PCB 85/116/117 NonDioxin
PCB 86/87/97/109/119/125 NonDioxin
PCB 86/87/97/108/119/125 NonDioxin
PCB 88/91 NonDioxin
PCB 89 NonDioxin
PCB 90/101/113 NonDioxin
PCB 92 NonDioxin
PCB 93/95/98/100/102 NonDioxin
PCB 94 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
GC-TI406-XAE-FI-1GC-TI406-SB-FI-1 GC-TI406-SB-FI-2GC-TI403-XAE-FI-1 GC-TI403-XAE-FI-2 GC-TI403-XAE-FI-3
GC-TI406-XAEGC-TI406-SB GC-TI406-SBGC-TI403-XAE GC-TI403-XAE GC-TI403-XAE
American EelAmerican EelAmerican Eel American Eel Striped Bass Striped Bass
FilletFillet FilletFillet Fillet Fillet
230 134 223 306 J 273 288
64.8 24.6 59.2 12.4 J 16.8 61.2
45.7 U 3.38 33.9 U 44.3 J 40.6 2.28 U
2,060 1,310 1,410 3,790 J 4,430 1,810
3,490 2,770 1,970 1,820 J 1,780 2,840
156 67.5 200 333 J 344 38.3
26,700 24,700 21,900 10,100 J 10,300 38,700
535 649 589 1,080 J 937 438
89.9 50 48.5 214 J 146 63.4
142 94.6 67.9 1,120 J 1,010 61.7
7,200 6,900 5,250 7,500 J 9,010 4,360
1,200 768 688 1,000 J 900 394
43,900 36,300 38,500 11,200 J 11,200 39,800
15 11.6 8.48 27.4 J 16.7 13.9
2.29 U 12.8 R 2.26 U 2.29 U 2.32 U 32.7
246 160 99.9 1,620 J 1,700 81.4
83.4 47.6 63.4 75.3 J 122 57.5
161 92.6 137 40 J 70.2 156
3,500 2,640 2,950 967 J 1,010 4,340
4,370 2,620 3,540 2,090 J 1,370 6,520
7,680 5,740 7,300 11,300 J 9,860 22,100
1,660 942 1,400 668 J 824 1,440
13,600 12,300 12,000 3,220 J 3,150 20,200
12,600 10,000 11,300 9,570 J 7,960 27,700
137 88.9 104 199 J 229 102
398 239 331 195 J 310 284
440 289 447 277 J 485 522
2.29 U 59.6 171 2.29 U 2.32 U 26.7
50.2 5.54 U 50.5 12.9 J 19.8 48.4
379 175 203 133 J 187 129
2.29 U 4.9 U 2.26 U 2.29 U 2.32 U 6.81 U
1,220 860 806 620 J 794 1,280
33,200 31,700 31,800 16,100 J 17,500 58,500
5,620 3,610 4,600 1,320 J 1,660 3,130
10,400 8,440 8,910 3,360 J 3,840 13,300
14,200 -- 9,180 7,030 J 8,290 --
-- 9,860 -- -- -- 9,190
5,400 4,310 4,230 2,040 J 3,360 3,580
10.7 8.92 10.2 R 48.9 J 55.1 7.9
43,900 30,200 35,600 14,500 J 19,800 30,600
7,850 7,200 8,060 3,370 J 4,990 7,430
26,300 16,700 20,800 7,430 J 9,140 10,700
98.3 104 134 47.8 J 55.3 31
TABLE 2.8 Supplement a
PCB Congener Concentrations (ng/kg) in Large Fish Species– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 96 NonDioxin
PCB 103 NonDioxin
PCB 104 NonDioxin
PCB 106 NonDioxin
PCB 107 NonDioxin
PCB 107/124 NonDioxin
PCB 108/124 NonDioxin
PCB 109 NonDioxin
PCB 110/115 NonDioxin
PCB 111 NonDioxin
PCB 112 NonDioxin
PCB 120 NonDioxin
PCB 121 NonDioxin
PCB 122 NonDioxin
PCB 127 NonDioxin
PCB 128/166 NonDioxin
PCB 129/138/160/163 NonDioxin
PCB 130 NonDioxin
PCB 131 NonDioxin
PCB 132 NonDioxin
PCB 133 NonDioxin
PCB 134/143 NonDioxin
PCB 135/151/154 NonDioxin
PCB 136 NonDioxin
PCB 137 NonDioxin
PCB 139/140 NonDioxin
PCB 141 NonDioxin
PCB 142 NonDioxin
PCB 144 NonDioxin
PCB 145 NonDioxin
PCB 146 NonDioxin
PCB 147/149 NonDioxin
PCB 148 NonDioxin
PCB 150 NonDioxin
PCB 152 NonDioxin
PCB 153/168 NonDioxin
PCB 155 NonDioxin
PCB 158 NonDioxin
PCB 159 NonDioxin
PCB 161 NonDioxin
PCB 162 NonDioxin
PCB 164 NonDioxin
PCB 165 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
GC-TI406-XAE-FI-1GC-TI406-SB-FI-1 GC-TI406-SB-FI-2GC-TI403-XAE-FI-1 GC-TI403-XAE-FI-2 GC-TI403-XAE-FI-3
GC-TI406-XAEGC-TI406-SB GC-TI406-SBGC-TI403-XAE GC-TI403-XAE GC-TI403-XAE
American EelAmerican EelAmerican Eel American Eel Striped Bass Striped Bass
FilletFillet FilletFillet Fillet Fillet
46.1 36.5 29.7 49.5 J 74.8 21.3
108 80.2 40.3 366 J 540 20
3.06 2.3 U 2.26 U 10.8 J 16.7 2.28 U
2.74 U 19.4 U 2.26 U 2.29 U 2.32 U 42.8 U
1,350 -- 1,010 1,290 J 1,720 --
-- 118 -- -- -- 178
248 -- 181 338 J 348 --
-- 771 -- -- -- 1,190
43,700 33,100 38,600 9,630 J 14,100 36,100
88 85.8 85.5 34.8 J 61.9 181
2.29 U 2.3 U 2.26 U 2.29 U 2.32 U 2.28 U
348 292 326 175 J 249 736
52.4 43.6 49.6 19.1 J 30 96.6
150 111 116 71 J 77.5 129
154 51.6 2.26 U 36.1 J 54.5 189
14,100 9,390 12,600 3,250 J 4,210 18,000
111,000 77,600 92,700 24,600 J 29,800 141,000
4,730 3,630 3,940 874 J 1,360 5,280
344 172 226 82.5 J 129 96.3
8,440 5,310 7,920 2,210 J 3,380 3,930
1,720 1,430 1,470 485 J 789 2,870
2,670 1,810 2,240 401 J 604 1,700
22,000 9,250 23,300 7,030 J 8,770 10,100
4,660 2,580 3,730 1,050 J 1,560 1,570
4,150 2,350 3,340 1,110 J 1,330 5,220
1,530 1,060 1,260 443 J 587 1,790
7,890 4,360 6,850 2,290 J 2,780 9,490
2.29 U 3.59 U 2.26 U 2.29 U 2.32 U 4.92 U
1,170 667 789 653 J 770 346
2.29 U 2.3 U 2.26 U 2.29 U 3.1 2.28 U
17,100 14,100 14,400 5,260 J 8,360 29,700
70,000 41,400 59,100 12,300 J 16,300 34,300
327 249 305 127 J 208 508
41.1 29.6 19.8 97.9 J 154 8.04
7 8.81 11.1 12.9 J 24.3 2.64
116,000 89,100 105,000 36,200 J 37,000 219,000
126 397 123 64.7 J 80.9 413
9,310 6,600 8,260 2,030 J 2,010 11,800
224 42.9 209 69.4 J 100 196
2.29 U 2.57 U 2.26 U 2.29 U 2.32 U 3.58 U
213 92.3 140 79.9 J 104 305
2,370 1,360 1,950 650 J 1,060 2,930
83.3 76.2 74.4 36.9 J 70.4 189
TABLE 2.8 Supplement a
PCB Congener Concentrations (ng/kg) in Large Fish Species– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 170 NonDioxin
PCB 171/173 NonDioxin
PCB 172 NonDioxin
PCB 174 NonDioxin
PCB 175 NonDioxin
PCB 176 NonDioxin
PCB 177 NonDioxin
PCB 178 NonDioxin
PCB 179 NonDioxin
PCB 180/193 NonDioxin
PCB 181 NonDioxin
PCB 182 NonDioxin
PCB 183/185 NonDioxin
PCB 184 NonDioxin
PCB 186 NonDioxin
PCB 187 NonDioxin
PCB 188 NonDioxin
PCB 190 NonDioxin
PCB 191 NonDioxin
PCB 192 NonDioxin
PCB 194 NonDioxin
PCB 195 NonDioxin
PCB 196 NonDioxin
PCB 197/200 NonDioxin
PCB 198/199 NonDioxin
PCB 201 NonDioxin
PCB 202 NonDioxin
PCB 203 NonDioxin
PCB 204 NonDioxin
PCB 205 NonDioxin
PCB 206 NonDioxin
PCB 207 NonDioxin
PCB 208 NonDioxin
PCB 209 NonDioxin
PCB Nondioxin
Total PCB Congeners
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
GC-TI406-XAE-FI-1GC-TI406-SB-FI-1 GC-TI406-SB-FI-2GC-TI403-XAE-FI-1 GC-TI403-XAE-FI-2 GC-TI403-XAE-FI-3
GC-TI406-XAEGC-TI406-SB GC-TI406-SBGC-TI403-XAE GC-TI403-XAE GC-TI403-XAE
American EelAmerican EelAmerican Eel American Eel Striped Bass Striped Bass
FilletFillet FilletFillet Fillet Fillet
14,800 8,330 12,000 4,060 J 4,130 27,200
6,550 3,850 5,360 1,420 J 1,550 8,160
2,400 1,590 1,900 669 J 882 5,190
4,150 1,700 3,700 1,170 J 1,700 4,490
919 626 757 242 J 291 1,450
850 470 585 261 J 317 225
9,830 7,250 8,750 1,570 J 2,010 11,900
4,360 3,970 3,500 1,310 J 1,710 8,320
3,130 2,370 3,010 1,120 J 1,270 2,480
39,600 24,800 33,200 12,300 J 12,200 99,800
193 98.5 155 54.2 J 68.8 324
126 77.1 107 48.9 J 82.1 204
18,000 11,800 15,200 4,740 J 4,850 28,200
77.2 90.2 66.1 20.6 J 27.4 129
2.29 U 2.3 U 2.26 U 2.29 U 2.32 U 2.28 U
35,900 25,900 29,500 8,870 J 11,400 67,800
117 113 110 71.8 J 84.2 397
4,470 2,810 3,810 984 J 949 6,320
866 561 734 210 J 195 1,560
2.29 U 3.08 2.26 U 2.29 U 2.32 U 2.28 U
4,270 3,840 3,980 1,570 J 1,590 12,100
2,690 1,700 2,180 602 J 648 3,640
3,630 2,840 2.26 U 978 J 1,090 8,040
635 538 525 167 J 244 975
5,910 5,550 5,110 1,720 J 2,560 17,000
937 1,130 730 329 J 436 2,390
1,460 2,820 1,460 862 J 1,250 6,790
6,250 5,000 5,300 1,660 J 2,100 13,600
7.84 8.75 6.27 2.9 J 5.42 19.3
345 242 278 76 J 81.2 539
2,420 2,730 2,180 845 J 1,040 6,190
338 394 318 127 J 167 844
754 987 688 344 J 504 2,870
764 1,280 637 396 J 470 2,950
918,000 665,000 782,000 308,000 345,000 1,220,000
991,000 723,000 844,000 332,000 369,000 1,350,000
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
PCB 77 Dioxin 0.0001 1,010 0.101 335 0.0335 514 0.0514 598 0.0598 702 0.0702 464 0.0464 629 0.0629 681
PCB 81 Dioxin 0.0003 45.8 0.01374 19.6 0.00588 26.6 0.00798 29.8 0.00894 33.9 0.01017 27.5 0.00825 32.6 0.00978 34.8
PCB 105 Dioxin 0.00003 6,150 0.1845 2,600 0.078 3,200 0.096 3,980 0.1194 4,320 0.1296 2,370 0.0711 3,780 0.1134 3,870
PCB 114 Dioxin 0.00003 466 0.01398 194 0.00582 215 0.00645 300 0.009 310 0.0093 179 0.00537 260 0.0078 293
PCB 118 Dioxin 0.00003 20,300 0.609 8,380 0.2514 9,730 0.2919 13,000 0.39 13,700 0.411 6,980 0.2094 10,700 0.321 12,300
PCB 123 Dioxin 0.00003 410 0.0123 181 0.00543 213 0.00639 270 0.0081 288 0.00864 175 0.00525 237 0.00711 268
PCB 126 Dioxin 0.1 60 6 19.6 1.96 27.6 2.76 35.3 3.53 39.9 3.99 24.7 2.47 31.5 3.15 38.7
PCB 156/157 Dioxin 0.00003 2,750 0.0825 1,140 0.0342 1,200 0.036 1,770 0.0531 1,790 0.0537 917 0.02751 1,290 0.0387 1,650
PCB 167 Dioxin 0.00003 1,330 0.0399 523 0.01569 604 0.01812 837 0.02511 880 0.0264 434 0.01302 600 0.018 790
PCB 169 Dioxin 0.03 12.1 U 0 6.03 U 0 6.63 U 0 0 U 0 0 U 0 5.18 U 0 5.37 U 0 0 U
PCB 189 Dioxin 0.00003 219 0.00657 76.9 0.002307 91.4 0.002742 132 0.00396 140 0.0042 68 0.00204 90.8 0.002724 128
PCB Dioxin 7.06 2.39 3.28 4.21 4.71 2.86 3.73 4.53
PCB 1 NonDioxin 11.9 5.94 4.33 8.26 7.2 2.31 U 3.4 4.73 U
PCB 2 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 3 NonDioxin 14 5.89 4.02 9.04 7.81 2.31 U 2.29 U 5.57 U
PCB 4 NonDioxin 40.9 21.3 16.8 28.9 25.9 6 16.4 19.9
PCB 5 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 6 NonDioxin 17.7 9.29 7.6 12.6 11.4 3.37 5.8 9.07
PCB 7 NonDioxin 7.32 3.61 2.32 U 5.05 2.78 U 2.31 U 2.29 U 2.91 U
PCB 8 NonDioxin 78.6 35.6 30.1 52.3 48.5 11.7 19 38.3
PCB 9 NonDioxin 5.6 2.5 2.32 U 3.71 2.13 U 2.31 U 2.29 U 2.23 U
PCB 10 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 11 NonDioxin 87.6 38.6 57.7 57.7 69.1 21 47.8 47.5
PCB 12/13 NonDioxin 15 7.34 10.9 10.5 12.6 7.67 8.23 10.7
PCB 14 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 15 NonDioxin 670 275 437 429 525 443 677 533
PCB 16 NonDioxin 21.3 8.5 6.34 13.5 12 2.6 7.33 10
PCB 17 NonDioxin 40.8 20.5 21 28.4 28.5 10.2 20.3 22.4
PCB 18/30 NonDioxin 62.6 24.2 24.1 46.6 46 10.7 31.7 39
PCB 19 NonDioxin 8.38 4.32 3.34 5.9 5.25 2.31 U 5.35 3.33 U
PCB 20/28 NonDioxin 8,320 4,010 5,410 5,690 6,510 4,910 7,380 6,270
PCB 21/33 NonDioxin 63.3 26.8 29.7 43.8 45.2 27.3 29.1 44.5
PCB 22 NonDioxin 59.8 24.1 36.1 38 45.1 18.5 23 34.9
PCB 23 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 24 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 25 NonDioxin 35.2 13.2 14.9 21.8 22.6 8.8 12.7 19.3
PCB 26/29 NonDioxin 50.7 18.4 19.3 40 40.1 9.35 22.3 35.1
PCB 27 NonDioxin 9.19 3.99 5.88 9.67 10.7 2.4 5.41 8.84
PCB 31 NonDioxin 231 81.5 72.3 140 133 37.9 68.7 115
PCB 32 NonDioxin 40.7 19.7 30.4 35.8 42.1 19.6 22.7 36.1
PCB 34 NonDioxin 4.59 U 2.28 U 3.63 2.7 U 4.89 2.31 U 2.29 U 2.76 U
PCB 35 NonDioxin 4.59 U 2.28 U 2.32 U 0 R 0 R 2.31 U 2.29 U 0 R
GC-TI401-402-BC-HP-1 GC-TI401-BC-ED-1 GC-TI401-BC-ED-2 GC-TI401-BC-WB-1 GC-TI401-BC-WB-2 GC-TI402-BC-ED-1 GC-TI402-BC-ED-2 GC-TI402-BC-WB-1
GC-TI401-402-BC GC-TI401-BC GC-TI401-BC GC-TI401-BC GC-TI401-BC GC-TI402-BC GC-TI402-BC GC-TI402-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabHepatopancreas Edible Tissue Edible Tissue Whole Body Whole Body Edible Tissue Edible Tissue Whole Body
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI401-402-BC-HP-1 GC-TI401-BC-ED-1 GC-TI401-BC-ED-2 GC-TI401-BC-WB-1 GC-TI401-BC-WB-2 GC-TI402-BC-ED-1 GC-TI402-BC-ED-2 GC-TI402-BC-WB-1
GC-TI401-402-BC GC-TI401-BC GC-TI401-BC GC-TI401-BC GC-TI401-BC GC-TI402-BC GC-TI402-BC GC-TI402-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabHepatopancreas Edible Tissue Edible Tissue Whole Body Whole Body Edible Tissue Edible Tissue Whole Body
PCB 36 NonDioxin 4.59 U 2.28 U 5.46 0 U 3.39 2.31 U 2.29 U 0 U
PCB 37 NonDioxin 1,560 585 827 964 1,110 945 1,240 1,190
PCB 38 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 39 NonDioxin 7.61 4.29 5.59 5.58 6.36 2.42 5.24 4.48
PCB 40/41/71 NonDioxin 217 50 139 223 275 92.6 63.7 253
PCB 42 NonDioxin 58.2 27.2 26.3 39.3 38.4 13.8 24.7 31.5
PCB 43 NonDioxin 9.78 2.66 5.93 11 12.9 5.38 8.34 12.9
PCB 44/47/65 NonDioxin 7,790 4,740 5,270 5,930 6,230 3,490 6,260 5,200
PCB 45/51 NonDioxin 10.3 5.14 5.78 7.15 7.5 4.62 U 10.8 4.09
PCB 46 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 48 NonDioxin 21.7 6.81 8.88 17 18 5.59 12.5 16.4
PCB 49/69 NonDioxin 220 80.1 46.3 135 112 18.6 47.7 98.7
PCB 50/53 NonDioxin 11 4.55 U 4.63 U 8.01 7.82 4.62 U 8.26 8.19
PCB 52 NonDioxin 144 48.3 42.3 133 127 19.8 65.8 118
PCB 54 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 55 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 56 NonDioxin 113 30.7 42.3 66.2 72.6 20.2 28.1 60.7
PCB 57 NonDioxin 5.63 2.28 U 2.32 U 6.46 6.3 2.31 U 2.29 U 6.6
PCB 58 NonDioxin 7.99 3.07 3.83 6.12 6.51 2.31 U 2.29 U 4.33
PCB 59/62/75 NonDioxin 470 335 332 388 384 213 412 315
PCB 60 NonDioxin 4.59 U 1,050 1,480 1,030 1,290 1,540 2,020 1,320
PCB 61/70/74/76 NonDioxin 7,530 3,280 4,370 4,930 5,570 3,450 5,260 5,070
PCB 63 NonDioxin 117 53.3 49.5 78.1 75.1 23.3 44.4 60.5
PCB 64 NonDioxin 108 54 39.6 75 65.6 23.7 46.4 57.2
PCB 66 NonDioxin 11,000 4,710 6,780 7,160 8,380 5,510 8,500 7,690
PCB 67 NonDioxin 4.59 U 6.81 6.6 12.6 12.3 2.57 6.58 10.1
PCB 68 NonDioxin 66 34.9 37.5 47 48.3 16.3 30.7 36.1
PCB 72 NonDioxin 31 13.7 15.3 21.7 22.5 5.71 10.3 17.1
PCB 73 NonDioxin 7.06 3.86 9.75 7.77 11.3 2.47 2.77 7.01
PCB 78 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 79 NonDioxin 22.6 17.3 20.4 19.4 21.2 12.8 21.5 16.7
PCB 80 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 82 NonDioxin 14.6 6.99 6.1 9.95 9.33 4.2 8.63 8.33
PCB 83/99 NonDioxin 16,300 8,900 9,700 11,800 12,200 6,650 10,500 10,500
PCB 84 NonDioxin 16.1 8.99 12.1 11.9 13.8 11.5 18.1 13.5
PCB 85/116/117 NonDioxin 2,450 1,370 1,530 1,790 1,880 1,140 1,800 1,660
PCB 86/87/97/109/119/125 NonDioxin 1,230 678 722 893 915 488 798 783
PCB 88/91 NonDioxin 63.1 32.3 30.8 44.3 43.1 17.5 39.3 35.6
PCB 89 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 90/101/113 NonDioxin 907 353 257 568 504 102 240 422
PCB 92 NonDioxin 132 40.1 30.7 116 108 11.7 31.5 100
PCB 93/95/98/100/102 NonDioxin 744 353 440 505 555 328 592 493
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI401-402-BC-HP-1 GC-TI401-BC-ED-1 GC-TI401-BC-ED-2 GC-TI401-BC-WB-1 GC-TI401-BC-WB-2 GC-TI402-BC-ED-1 GC-TI402-BC-ED-2 GC-TI402-BC-WB-1
GC-TI401-402-BC GC-TI401-BC GC-TI401-BC GC-TI401-BC GC-TI401-BC GC-TI402-BC GC-TI402-BC GC-TI402-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabHepatopancreas Edible Tissue Edible Tissue Whole Body Whole Body Edible Tissue Edible Tissue Whole Body
PCB 94 NonDioxin 8.16 4.28 14.3 9.34 15.4 5.08 6.2 9.94
PCB 96 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 103 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 104 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 106 NonDioxin 5.16 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 107 NonDioxin 633 275 330 414 445 187 300 364
PCB 108/124 NonDioxin 31.2 6.89 8.39 17.4 18 4.62 U 6.13 13.4
PCB 110/115 NonDioxin 813 355 304 533 497 222 364 457
PCB 111 NonDioxin 45.3 21.6 16.7 30.8 27.6 11.3 21 24.8
PCB 112 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 120 NonDioxin 175 101 101 130 129 65.4 102 109
PCB 121 NonDioxin 20.2 11.2 11.1 14.7 14.6 6.49 12.4 11.9
PCB 122 NonDioxin 5.99 U 2.28 U 2.32 U 3.28 U 3.2 U 2.31 U 2.29 U 3.35 U
PCB 127 NonDioxin 27.7 2.28 U 2.32 U 10.8 R 10.5 R 2.31 U 2.29 U 11 R
PCB 128/166 NonDioxin 2,450 1,290 1,430 1,740 1,820 1,040 1,560 1,600
PCB 129/138/160/163 NonDioxin 22,200 10,100 11,100 14,800 15,300 7,530 12,200 13,400
PCB 130 NonDioxin 313 123 110 197 187 44.2 84.3 151
PCB 131 NonDioxin 4.59 U 2.72 4.23 1.66 2.62 2.49 3.61 1.5
PCB 132 NonDioxin 28.9 9.2 4.3 16.9 13.6 2.68 8.6 13.1
PCB 133 NonDioxin 553 312 246 406 363 168 316 321
PCB 134/143 NonDioxin 9.19 U 4.55 U 4.63 U 0 U 0 U 4.62 U 4.57 U 0 U
PCB 135/151/154 NonDioxin 1,640 737 891 1,090 1,180 686 945 1,070
PCB 136 NonDioxin 7.54 4.52 4.36 5.69 5.57 3.43 9.86 5.06
PCB 137 NonDioxin 1,150 579 515 801 756 414 612 707
PCB 139/140 NonDioxin 449 238 251 320 326 189 281 292
PCB 141 NonDioxin 86.3 42.6 17 59.6 43.3 11.9 21.7 41.5
PCB 142 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 144 NonDioxin 32 12.3 10.9 20 18.9 7.08 12.8 17
PCB 145 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 146 NonDioxin 4,690 2,330 2,360 3,250 3,240 1,430 2,230 2,730
PCB 147/149 NonDioxin 1,040 413 350 657 612 163 351 512
PCB 148 NonDioxin 117 71.1 73.1 89 89.8 52.8 80.2 78.3
PCB 150 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 152 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 153/168 NonDioxin 40,900 18,300 21,100 27,100 28,600 14,200 19,500 24,800
PCB 155 NonDioxin 48.7 26.5 39.4 35.1 42.9 26.3 57.7 35.2
PCB 158 NonDioxin 2,720 1,100 1,240 1,730 1,800 986 1,400 1,680
PCB 159 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 161 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 162 NonDioxin 84.2 34.3 38 53.7 55.5 26.5 38.8 49.4
PCB 164 NonDioxin 4.59 U 25.6 11 29.5 20.4 3.27 6.22 16.2
PCB 165 NonDioxin 30.3 19.3 14.1 23.6 20.2 8.71 17.3 17.3
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI401-402-BC-HP-1 GC-TI401-BC-ED-1 GC-TI401-BC-ED-2 GC-TI401-BC-WB-1 GC-TI401-BC-WB-2 GC-TI402-BC-ED-1 GC-TI402-BC-ED-2 GC-TI402-BC-WB-1
GC-TI401-402-BC GC-TI401-BC GC-TI401-BC GC-TI401-BC GC-TI401-BC GC-TI402-BC GC-TI402-BC GC-TI402-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabHepatopancreas Edible Tissue Edible Tissue Whole Body Whole Body Edible Tissue Edible Tissue Whole Body
PCB 170 NonDioxin 4,130 1,170 1,310 2,320 2,380 1,200 1,630 2,360
PCB 171/173 NonDioxin 1,480 581 730 931 1,010 583 803 940
PCB 172 NonDioxin 807 267 222 477 444 199 314 441
PCB 174 NonDioxin 55.3 22.7 9.65 35.4 27 5.93 14.2 25.6
PCB 175 NonDioxin 209 88.1 98.5 135 140 70.3 108 125
PCB 176 NonDioxin 12 5.43 4.72 7.99 7.48 3.09 6.36 6.63
PCB 177 NonDioxin 1,260 282 270 662 646 117 209 571
PCB 178 NonDioxin 1,330 709 654 951 911 467 783 810
PCB 179 NonDioxin 17.8 6.83 2.81 11.1 8.5 2.31 U 4.11 7.08
PCB 180/193 NonDioxin 14,900 5,340 6,390 9,060 9,620 4,680 6,640 8,740
PCB 181 NonDioxin 54.2 28 26.4 38.2 37 21.6 33.2 34.6
PCB 182 NonDioxin 37.8 28.3 22 32 28 15.4 26.4 24.3
PCB 183/185 NonDioxin 5,200 2,100 2,590 3,310 3,580 1,810 2,580 3,160
PCB 184 NonDioxin 16.1 12.6 14.6 14 15.2 8.92 16.2 11.8
PCB 186 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 187 NonDioxin 9,810 4,410 5,150 6,510 6,920 2,820 4,440 5,600
PCB 188 NonDioxin 60.4 34.1 44 44.3 50.2 32.5 45.9 43.6
PCB 190 NonDioxin 1,190 376 435 693 722 345 492 681
PCB 191 NonDioxin 261 87.3 105 155 164 85.7 122 155
PCB 192 NonDioxin 4.59 U 2.28 U 2.32 U 0 U 0 U 2.31 U 2.29 U 0 U
PCB 194 NonDioxin 1,760 629 647 1,070 1,070 520 686 1,010
PCB 195 NonDioxin 571 157 160 318 316 167 228 328
PCB 196 NonDioxin 1,170 477 467 747 734 368 567 687
PCB 197/200 NonDioxin 144 73.4 79.3 101 104 47.9 82 86.1
PCB 198/199 NonDioxin 2,210 842 680 1,370 1,260 634 862 1,260
PCB 201 NonDioxin 312 143 167 209 222 104 150 187
PCB 202 NonDioxin 728 486 446 580 553 314 418 479
PCB 203 NonDioxin 1,390 546 520 874 850 426 615 809
PCB 204 NonDioxin 4.59 U 2.48 2.32 U 1.52 0 U 2.31 U 2.72 0 U
PCB 205 NonDioxin 38.7 11.6 11.7 22.1 21.9 13 18.4 23.2
PCB 206 NonDioxin 472 260 238 342 327 303 314 370
PCB 207 NonDioxin 90.8 66.8 52.4 76.1 67 45.5 71.1 63.5
PCB 208 NonDioxin 248 227 150 235 187 183 208 209
PCB 209 NonDioxin 222 215 184 218 198 185 225 200
PCB Nondioxin 192,000 87,800 101,000 129,000 136,000 73,000 110,000 121,000
Total PCB Congeners 224,000 101,000 117,000 150,000 158,000 84,600 127,000 141,000
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 77 Dioxin 0.0001
PCB 81 Dioxin 0.0003
PCB 105 Dioxin 0.00003
PCB 114 Dioxin 0.00003
PCB 118 Dioxin 0.00003
PCB 123 Dioxin 0.00003
PCB 126 Dioxin 0.1
PCB 156/157 Dioxin 0.00003
PCB 167 Dioxin 0.00003
PCB 169 Dioxin 0.03
PCB 189 Dioxin 0.00003
PCB Dioxin
PCB 1 NonDioxin
PCB 2 NonDioxin
PCB 3 NonDioxin
PCB 4 NonDioxin
PCB 5 NonDioxin
PCB 6 NonDioxin
PCB 7 NonDioxin
PCB 8 NonDioxin
PCB 9 NonDioxin
PCB 10 NonDioxin
PCB 11 NonDioxin
PCB 12/13 NonDioxin
PCB 14 NonDioxin
PCB 15 NonDioxin
PCB 16 NonDioxin
PCB 17 NonDioxin
PCB 18/30 NonDioxin
PCB 19 NonDioxin
PCB 20/28 NonDioxin
PCB 21/33 NonDioxin
PCB 22 NonDioxin
PCB 23 NonDioxin
PCB 24 NonDioxin
PCB 25 NonDioxin
PCB 26/29 NonDioxin
PCB 27 NonDioxin
PCB 31 NonDioxin
PCB 32 NonDioxin
PCB 34 NonDioxin
PCB 35 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
0.0681 777 0.0777 378 0.0378 544 0.0544 701 0.0701 722 0.0722 816 0.0816 432 R 0.0432 360 R
0.01044 37.7 0.01131 21.5 0.00645 26.7 0.00801 38.7 0.01161 34 0.0102 41.3 0.01239 23.8 0.00714 20.4
0.1161 4,700 0.141 2,240 0.0672 3,330 0.0999 4,120 0.1236 4,400 0.132 4,880 0.1464 2,540 0.0762 1,920
0.00879 340 0.0102 153 0.00459 223 0.00669 279 0.00837 316 0.00948 349 0.01047 176 0.00528 137
0.369 14,400 0.432 6,410 0.1923 10,100 0.303 12,000 0.36 14,000 0.42 15,100 0.453 7,390 0.2217 5,450
0.00804 304 0.00912 139 0.00417 231 0.00693 263 0.00789 299 0.00897 318 0.00954 151 0.00453 132
3.87 42.6 4.26 22 2.2 30 3 37.8 3.78 41.4 4.14 46.1 4.61 20.8 2.08 16.5
0.0495 1,860 0.0558 928 0.02784 1,350 0.0405 1,650 0.0495 1,880 0.0564 2,060 0.0618 931 0.02793 702
0.0237 884 0.02652 471 0.01413 660 0.0198 745 0.02235 915 0.02745 963 0.02889 457 0.01371 346
0 0 U 0 6 U 0 6.84 U 0 8.24 U 0 0 U 0 0 U 0 4.46 U 0 3.69 U
0.00384 141 0.00423 71.1 0.002133 101 0.00303 109 0.00327 146 0.00438 150 0.0045 65.5 0.001965 56.3
5.03 2.56 3.54 4.44 4.88 5.42 2.44 1.92
6.71 4.62 U 3.05 2.3 U 6.42 4.43 U 2.3 U 2.31 U
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
5.45 U 4.62 U 2.32 U 2.3 U 5.33 U 5.21 U 2.3 U 2.31 U
25.9 12.8 12.7 12.2 23.4 22.9 15.4 17.3
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
10.4 11.3 5.07 6.59 9.88 10.7 14.4 13.8
2.85 U 4.62 U 2.32 U 2.3 U 2.79 U 2.73 U 2.3 U 2.31 U
42.2 34.2 17.9 20.4 41 42.1 40.2 33.4
2.18 U 4.62 U 2.32 U 2.3 U 2.13 U 2.09 U 2.3 U 2.31 U
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
63.3 63.1 60.2 50.1 70.6 64.1 60.5 36.5
11 15.4 11.3 19.2 12.9 17.8 24.1 24
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
674 312 597 928 625 832 506 439
12.8 12 4.63 5.68 11 11.5 7.44 7.68
28.3 29.9 16.1 24.1 25.5 30.3 48.4 41.8
51.2 81.9 17 33 41.7 51.2 65.9 44.4
6.53 4.62 U 3.36 3.24 5.27 5.15 3.99 6.46
7,750 3,390 5,930 7,400 6,840 7,740 4,580 4,430
45.2 70.6 31.4 36.6 R 46.3 26.3 R 51.6 44.9
37.3 51.8 26.1 40.8 38.9 47.9 83.2 56.1
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
21.5 27.1 10.1 20.2 19.7 25.8 39.7 31.3
42.4 74 13.3 27.3 36.4 44.7 62.1 39.9
10.5 18.6 4.08 6.7 9.61 11.1 16 11.1
132 170 51.1 117 120 159 216 125
37.6 61.1 19.8 32 35.5 42.8 79.1 56.3
2.7 U 6.94 2.94 2.96 4.46 4.44 6.48 4.06
0 R 4.93 R 2.32 U 2.7 0 R 1.69 R 5.06 2.82
GC-TI402-BC-WB-1 GC-TI402-BC-WB-2
GC-TI402-BC GC-TI402-BC GC-TI403-THRU-406-BC GC-TI403-BC GC-TI403-BC
GC-TI404-BC-ED-2GC-TI403-404-405-406-BC-HP-2GC-TI403-BC-ED-1 GC-TI403-BC-ED-2 GC-TI403-BC-WB-1 GC-TI403-BC-WB-2 GC-TI404-BC-ED-1
GC-TI403-BC GC-TI403-BC GC-TI404-BC GC-TI404-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabBlue Crab Blue Crab Blue CrabWhole Body Whole Body Edible Tissue Edible TissueWhole Body Whole Body Hepatopan Edible Tissue Edible Tissue
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 36 NonDioxin
PCB 37 NonDioxin
PCB 38 NonDioxin
PCB 39 NonDioxin
PCB 40/41/71 NonDioxin
PCB 42 NonDioxin
PCB 43 NonDioxin
PCB 44/47/65 NonDioxin
PCB 45/51 NonDioxin
PCB 46 NonDioxin
PCB 48 NonDioxin
PCB 49/69 NonDioxin
PCB 50/53 NonDioxin
PCB 52 NonDioxin
PCB 54 NonDioxin
PCB 55 NonDioxin
PCB 56 NonDioxin
PCB 57 NonDioxin
PCB 58 NonDioxin
PCB 59/62/75 NonDioxin
PCB 60 NonDioxin
PCB 61/70/74/76 NonDioxin
PCB 63 NonDioxin
PCB 64 NonDioxin
PCB 66 NonDioxin
PCB 67 NonDioxin
PCB 68 NonDioxin
PCB 72 NonDioxin
PCB 73 NonDioxin
PCB 78 NonDioxin
PCB 79 NonDioxin
PCB 80 NonDioxin
PCB 82 NonDioxin
PCB 83/99 NonDioxin
PCB 84 NonDioxin
PCB 85/116/117 NonDioxin
PCB 86/87/97/109/119/125 NonDioxin
PCB 88/91 NonDioxin
PCB 89 NonDioxin
PCB 90/101/113 NonDioxin
PCB 92 NonDioxin
PCB 93/95/98/100/102 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI402-BC-WB-1 GC-TI402-BC-WB-2
GC-TI402-BC GC-TI402-BC GC-TI403-THRU-406-BC GC-TI403-BC GC-TI403-BC
GC-TI404-BC-ED-2GC-TI403-404-405-406-BC-HP-2GC-TI403-BC-ED-1 GC-TI403-BC-ED-2 GC-TI403-BC-WB-1 GC-TI403-BC-WB-2 GC-TI404-BC-ED-1
GC-TI403-BC GC-TI403-BC GC-TI404-BC GC-TI404-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabBlue Crab Blue Crab Blue CrabWhole Body Whole Body Edible Tissue Edible TissueWhole Body Whole Body Hepatopan Edible Tissue Edible Tissue
0 U 4.62 U 3.7 3.38 2.29 2.12 4.64 2.31 U
1,360 673 986 1,390 1,200 1,450 834 776
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
6.16 4.71 4.38 4.71 5.61 5.79 7.01 3.38
232 496 80.8 112 239 255 287 153
37.7 32.3 20.3 35.6 34.7 44 70.1 42.3
14.5 24.2 4.58 7.05 12.1 13.4 17.8 12.4
6,860 2,540 5,250 6,180 6,220 6,780 3,270 3,040
10.6 9.38 4.86 8.9 6.93 9.42 22.2 12.6
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.81 3.14
20.4 32.9 6.33 14.8 16.5 21.5 34.7 20.4
115 132 26 67.6 99.9 124 182 66.7
13.1 20.6 4.63 U 8.49 7.85 13 20.7 11.1
144 266 28.9 78.5 119 148 220 78.1
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
64.6 122 22.9 41.2 60.6 71.3 123 64.5
6.46 16.6 2.32 U 2.3 U 6.32 6.18 4.81 2.47
4.24 10.9 2.32 U 2.3 U 4.15 4.06 5.32 2.31 U
435 173 332 363 385 403 201 193
1,620 987 1,560 1,990 1,340 1,620 1,110 1,020
6,140 2,960 4,160 5,200 5,440 6,070 3,130 2,760
72.6 44.3 40.5 51.1 69.6 75.6 72.6 36.7
70.4 89.6 25 60.5 56.6 78.2 134 65.7
9,470 4,160 6,740 8,050 8,360 9,150 5,180 4,420
12.4 21.6 2.32 U 10.1 8.23 U 14.4 15.6 8.19
44.4 28.1 31.5 35.2 44.6 46.7 38.4 17.8
19.6 34.3 9.84 14.5 19.2 21.9 25.3 9.19
7.1 13.9 4.37 2.65 8 6.84 12.2 3.52
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
21.9 15 17.6 21.5 19.5 21.9 18.4 12.1
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
11 13.4 7.91 11 10.5 12.3 11.1 7.76
12,800 5,510 10,600 11,200 12,800 13,100 6,660 5,670
17.5 16.5 8.33 13.2 11.4 14.4 29 25.5
2,050 868 1,550 1,880 1,890 2,090 1,180 920
966 545 734 796 923 958 554 468
48.6 36 18 42.9 35.2 50.4 105 37.6
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
499 498 152 276 440 511 553 191
111 235 8.9 32.8 95 108 98 35.8
651 407 538 610 616 660 481 369
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 94 NonDioxin
PCB 96 NonDioxin
PCB 103 NonDioxin
PCB 104 NonDioxin
PCB 106 NonDioxin
PCB 107 NonDioxin
PCB 108/124 NonDioxin
PCB 110/115 NonDioxin
PCB 111 NonDioxin
PCB 112 NonDioxin
PCB 120 NonDioxin
PCB 121 NonDioxin
PCB 122 NonDioxin
PCB 127 NonDioxin
PCB 128/166 NonDioxin
PCB 129/138/160/163 NonDioxin
PCB 130 NonDioxin
PCB 131 NonDioxin
PCB 132 NonDioxin
PCB 133 NonDioxin
PCB 134/143 NonDioxin
PCB 135/151/154 NonDioxin
PCB 136 NonDioxin
PCB 137 NonDioxin
PCB 139/140 NonDioxin
PCB 141 NonDioxin
PCB 142 NonDioxin
PCB 144 NonDioxin
PCB 145 NonDioxin
PCB 146 NonDioxin
PCB 147/149 NonDioxin
PCB 148 NonDioxin
PCB 150 NonDioxin
PCB 152 NonDioxin
PCB 153/168 NonDioxin
PCB 155 NonDioxin
PCB 158 NonDioxin
PCB 159 NonDioxin
PCB 161 NonDioxin
PCB 162 NonDioxin
PCB 164 NonDioxin
PCB 165 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI402-BC-WB-1 GC-TI402-BC-WB-2
GC-TI402-BC GC-TI402-BC GC-TI403-THRU-406-BC GC-TI403-BC GC-TI403-BC
GC-TI404-BC-ED-2GC-TI403-404-405-406-BC-HP-2GC-TI403-BC-ED-1 GC-TI403-BC-ED-2 GC-TI403-BC-WB-1 GC-TI403-BC-WB-2 GC-TI404-BC-ED-1
GC-TI403-BC GC-TI403-BC GC-TI404-BC GC-TI404-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabBlue Crab Blue Crab Blue CrabWhole Body Whole Body Edible Tissue Edible TissueWhole Body Whole Body Hepatopan Edible Tissue Edible Tissue
10.5 17.3 9.39 8.55 12.4 11.8 19.8 6.7
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
0 U 4.62 U 2.32 U 2.65 0 U 1.66 10.1 2.31 U
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
430 386 276 342 412 450 336 176
16.9 33.8 4.63 U 8.57 12.9 18 20.5 6.55
539 554 258 374 469 537 506 264
30.5 37.9 19.6 20.5 29.4 29.7 13.6 11
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
130 87 110 116 135 138 75.2 60.1
15.4 9.09 10.3 11.5 14.1 14.7 7.11 6.27
3.28 U 8.43 2.32 U 2.3 U 3.21 U 3.14 U 2.3 U 2.31 U
10.8 R 12.2 R 2.32 U 2.3 U 10.6 R 10.3 R 2.3 U 2.31 U
1,910 821 1,540 1,900 1,890 2,100 1,090 873
16,100 7,520 11,800 13,600 15,800 16,800 8,670 6,960
173 105 78.8 91.3 168 174 129 60.8
2.21 4.62 U 2.98 4.6 1.84 2.89 5.81 2.69
16.5 21.6 3.1 9.88 12.9 17 14.2 7.05
408 420 328 364 414 434 214 177
0 U 9.23 U 4.63 U 4.59 U 0 U 0 U 7.77 4.62 U
1,220 639 1,180 1,250 1,360 1,400 732 700
8.96 5.5 3.04 6.41 4.75 6.83 13.5 8.79
821 359 617 773 820 913 408 345
346 135 299 338 356 379 184 165
46.8 68.9 2.32 U 29.2 32.9 50.5 50 15.8
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
20.3 19.4 7.56 14.3 16.9 20.9 25.1 9.32
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
3,190 1,680 2,180 2,680 3,140 3,430 1,780 1,320
619 386 196 379 518 625 765 283
94.5 45.8 90.8 95.6 101 104 54.2 53.5
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
27,800 11,600 24,900 26,300 31,000 31,700 15,000 12,100
54.2 19.4 42.1 44.5 44.6 46.1 25.4 23.3
1,910 822 1,450 1,830 1,930 2,160 920 795
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
56.5 59.9 35.1 42.9 53.8 58.3 31.2 22.7
17.7 35.7 5.65 9.59 17.1 19.3 26.6 9.69
22.4 24.5 17.6 18 22.4 22.6 13.1 9.52
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 170 NonDioxin
PCB 171/173 NonDioxin
PCB 172 NonDioxin
PCB 174 NonDioxin
PCB 175 NonDioxin
PCB 176 NonDioxin
PCB 177 NonDioxin
PCB 178 NonDioxin
PCB 179 NonDioxin
PCB 180/193 NonDioxin
PCB 181 NonDioxin
PCB 182 NonDioxin
PCB 183/185 NonDioxin
PCB 184 NonDioxin
PCB 186 NonDioxin
PCB 187 NonDioxin
PCB 188 NonDioxin
PCB 190 NonDioxin
PCB 191 NonDioxin
PCB 192 NonDioxin
PCB 194 NonDioxin
PCB 195 NonDioxin
PCB 196 NonDioxin
PCB 197/200 NonDioxin
PCB 198/199 NonDioxin
PCB 201 NonDioxin
PCB 202 NonDioxin
PCB 203 NonDioxin
PCB 204 NonDioxin
PCB 205 NonDioxin
PCB 206 NonDioxin
PCB 207 NonDioxin
PCB 208 NonDioxin
PCB 209 NonDioxin
PCB Nondioxin
Total PCB Congeners
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI402-BC-WB-1 GC-TI402-BC-WB-2
GC-TI402-BC GC-TI402-BC GC-TI403-THRU-406-BC GC-TI403-BC GC-TI403-BC
GC-TI404-BC-ED-2GC-TI403-404-405-406-BC-HP-2GC-TI403-BC-ED-1 GC-TI403-BC-ED-2 GC-TI403-BC-WB-1 GC-TI403-BC-WB-2 GC-TI404-BC-ED-1
GC-TI403-BC GC-TI403-BC GC-TI404-BC GC-TI404-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabBlue Crab Blue Crab Blue CrabWhole Body Whole Body Edible Tissue Edible TissueWhole Body Whole Body Hepatopan Edible Tissue Edible Tissue
2,600 924 1,690 1,810 2,620 2,670 1,060 984
1,070 366 838 954 1,080 1,150 538 463
506 312 280 363 481 528 210 201
30.2 26.1 6.01 9.9 24.8 26.8 31.7 11.4
147 64.9 102 141 143 166 80.4 73.1
8.55 4.62 U 2.32 U 4.55 4.57 U 7.32 12.4 4.61
618 167 189 229 597 613 340 165
996 735 807 923 1,010 1,070 600 487
9.43 5.99 2.32 U 5.8 6.78 10.3 10.7 4.69
9,850 3,990 7,230 7,930 10,200 10,500 4,650 4,050
41.4 14.2 34 38.1 41.7 44.1 19.1 19.9
30.8 11.8 23.8 28.6 29.1 32 15.1 14.3
3,600 1,280 2,800 3,300 3,710 4,010 1,800 1,540
16.2 6.37 12.1 14.2 13.6 14.9 10.1 7.08
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
6,530 2,860 4,060 5,500 6,250 7,100 3,720 2,840
51.5 22 50.2 45.9 54.1 51.3 32.9 29.4
763 288 522 595 776 817 315 285
176 85.9 136 159 184 197 78.3 74.3
0 U 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
1,100 391 794 759 1,160 1,130 439 408
361 105 224 232 356 358 136 136
802 264 551 648 787 842 307 319
106 34.4 59.7 77.4 91.8 102 53.4 41.5
1,390 609 689 919 1,270 1,400 594 508
213 83 132 154 201 213 129 87.6
539 283 441 456 550 557 426 250
916 275 500 708 839 962 371 340
1.66 4.62 U 2.32 U 2.3 U 0 U 0 U 2.3 U 2.31 U
26.3 10.9 14.4 13.4 23.7 22.8 11.1 9.51
375 134 247 265 333 342 213 156
78.8 24 54.6 57 68.4 69.6 42.4 32.5
224 97.2 179 162 205 194 158 107
224 80.5 187 144 200 173 158 105
142,000 65,000 108,000 125,000 141,000 150,000 78,300 64,200
166,000 75,800 125,000 145,000 163,000 175,000 90,100 73,000
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 77 Dioxin 0.0001
PCB 81 Dioxin 0.0003
PCB 105 Dioxin 0.00003
PCB 114 Dioxin 0.00003
PCB 118 Dioxin 0.00003
PCB 123 Dioxin 0.00003
PCB 126 Dioxin 0.1
PCB 156/157 Dioxin 0.00003
PCB 167 Dioxin 0.00003
PCB 169 Dioxin 0.03
PCB 189 Dioxin 0.00003
PCB Dioxin
PCB 1 NonDioxin
PCB 2 NonDioxin
PCB 3 NonDioxin
PCB 4 NonDioxin
PCB 5 NonDioxin
PCB 6 NonDioxin
PCB 7 NonDioxin
PCB 8 NonDioxin
PCB 9 NonDioxin
PCB 10 NonDioxin
PCB 11 NonDioxin
PCB 12/13 NonDioxin
PCB 14 NonDioxin
PCB 15 NonDioxin
PCB 16 NonDioxin
PCB 17 NonDioxin
PCB 18/30 NonDioxin
PCB 19 NonDioxin
PCB 20/28 NonDioxin
PCB 21/33 NonDioxin
PCB 22 NonDioxin
PCB 23 NonDioxin
PCB 24 NonDioxin
PCB 25 NonDioxin
PCB 26/29 NonDioxin
PCB 27 NonDioxin
PCB 31 NonDioxin
PCB 32 NonDioxin
PCB 34 NonDioxin
PCB 35 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
0.036 387 R 0.0387 399 R 0.0399 890 R 0.089 779 R 0.0779 420 R 0.042 410 R 0.041 752 R 0.0752 451
0.00612 32.2 0.00966 30.4 0.00912 50.1 0.01503 40.9 0.01227 48.3 0.01449 42.9 0.01287 36.7 0.01101 22.7
0.0576 3,920 0.1176 3,590 0.1077 4,690 0.1407 3,840 0.1152 5,300 0.159 4,780 0.1434 3,950 0.1185 2,240
0.00411 287 0.00861 267 0.00801 326 0.00978 266 0.00798 384 0.01152 347 0.01041 267 0.00801 157
0.1635 12,300 0.369 11,300 0.339 14,300 0.429 12,200 0.366 16,800 0.504 15,500 0.465 12,400 0.372 6,760
0.00396 250 0.0075 242 0.00726 314 0.00942 253 0.00759 354 0.01062 317 0.00951 271 0.00813 140
1.65 35.8 3.58 33.7 3.37 38.4 3.84 38.6 3.86 47.4 4.74 47.3 4.73 37.9 3.79 22.6
0.02106 1,630 0.0489 1,510 0.0453 1,660 0.0498 1,450 0.0435 2,110 0.0633 1,980 0.0594 1,490 0.0447 777
0.01038 792 0.02376 735 0.02205 839 0.02517 706 0.02118 1,040 0.0312 959 0.02877 720 0.0216 381
0 0 U 0 0 U 0 6.96 U 0 6.67 U 0 0 U 0 0 U 0 6.2 U 0 3.78 U
0.001689 124 0.00372 121 0.00363 134 0.00402 106 0.00318 169 0.00507 152 0.00456 104 0.00312 56.5
4.17 3.91 4.52 4.44 5.54 5.46 4.38 2.63
4.56 U 4.7 U 2.37 2.32 U 6.33 4.83 U 2.2 U 2.27 U
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
5.37 U 5.53 U 2.32 U 2.32 U 5.82 U 5.68 U 2.2 U 2.27 U
25.2 26.6 19.2 9.98 28.2 22.5 12.1 9.56
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
15.7 15.3 13 5.12 15 10.2 3.59 3.16
2.81 U 2.89 U 2.32 U 2.32 U 3.04 U 2.97 U 2.2 U 2.27 U
54.9 51.3 63.5 19.2 69.8 43.3 18.5 17.4
2.15 U 2.21 U 2.32 U 2.32 U 2.33 U 2.27 U 2.2 U 2.27 U
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
70.9 56.7 68.7 58.7 76.6 70.4 56.7 44.6
20.8 20.6 23.8 16.6 20.3 16.1 15.1 14.3
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
569 530 869 671 786 671 634 561
12.8 13.1 13.9 3.14 17 10.5 6.31 5.52
45.5 41.4 45.9 20.4 43.8 28.7 22.2 20.1
72 59.2 60.3 20.3 69.3 45.3 29.2 35
5.67 7.22 5.28 2.42 R 6.57 3.4 R 3.69 2.27 U
6,010 5,970 9,420 7,810 8,960 8,020 6,820 5,180
58.9 55.1 99.6 39.2 87.5 51.9 44.5 21.9
74.2 57.6 83.3 32 73.5 43.3 44 59.5
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
38 32.8 23.7 16 28.5 23.8 18.7 26.3
66.7 53.4 34.4 23.6 50.9 44 26.3 38.4
17 14.1 9.22 5.63 13.1 10.9 6.78 6.66
222 167 163 83.7 191 143 99.7 177
72.2 58.2 52.9 31.7 56.3 43.6 35.2 32.2
6.66 5.2 5.4 4.99 6.04 5.78 3.74 2.48
3.12 R 1.71 R 4.41 3.24 2.58 R 1.93 R 3.02 R 3.09
GC-TI405-BC-WB-2 GC-TI406-BC-ED-1 GC-TI406-BC-ED-2GC-TI404-BC-ED-2 GC-TI404-BC-WB-1 GC-TI404-BC-WB-2 GC-TI405-BC-ED-1 GC-TI405-BC-ED-2 GC-TI405-BC-WB-1
GC-TI405-BC GC-TI405-BC GC-TI405-BC GC-TI405-BC GC-TI406-BC GC-TI406-BCGC-TI404-BC GC-TI404-BC GC-TI404-BC
Blue CrabBlue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabEdible Tissue Whole Body Whole Body Edible Tissue Edible Tissue Whole Body Whole Body Edible Tissue Edible Tissue
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 36 NonDioxin
PCB 37 NonDioxin
PCB 38 NonDioxin
PCB 39 NonDioxin
PCB 40/41/71 NonDioxin
PCB 42 NonDioxin
PCB 43 NonDioxin
PCB 44/47/65 NonDioxin
PCB 45/51 NonDioxin
PCB 46 NonDioxin
PCB 48 NonDioxin
PCB 49/69 NonDioxin
PCB 50/53 NonDioxin
PCB 52 NonDioxin
PCB 54 NonDioxin
PCB 55 NonDioxin
PCB 56 NonDioxin
PCB 57 NonDioxin
PCB 58 NonDioxin
PCB 59/62/75 NonDioxin
PCB 60 NonDioxin
PCB 61/70/74/76 NonDioxin
PCB 63 NonDioxin
PCB 64 NonDioxin
PCB 66 NonDioxin
PCB 67 NonDioxin
PCB 68 NonDioxin
PCB 72 NonDioxin
PCB 73 NonDioxin
PCB 78 NonDioxin
PCB 79 NonDioxin
PCB 80 NonDioxin
PCB 82 NonDioxin
PCB 83/99 NonDioxin
PCB 84 NonDioxin
PCB 85/116/117 NonDioxin
PCB 86/87/97/109/119/125 NonDioxin
PCB 88/91 NonDioxin
PCB 89 NonDioxin
PCB 90/101/113 NonDioxin
PCB 92 NonDioxin
PCB 93/95/98/100/102 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI405-BC-WB-2 GC-TI406-BC-ED-1 GC-TI406-BC-ED-2GC-TI404-BC-ED-2 GC-TI404-BC-WB-1 GC-TI404-BC-WB-2 GC-TI405-BC-ED-1 GC-TI405-BC-ED-2 GC-TI405-BC-WB-1
GC-TI405-BC GC-TI405-BC GC-TI405-BC GC-TI405-BC GC-TI406-BC GC-TI406-BCGC-TI404-BC GC-TI404-BC GC-TI404-BC
Blue CrabBlue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabEdible Tissue Whole Body Whole Body Edible Tissue Edible Tissue Whole Body Whole Body Edible Tissue Edible Tissue
2.86 0 U 9.09 6.54 5.31 3.89 5.37 3.69
1,110 1,090 1,690 1,440 1,640 1,490 1,300 877
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
7.24 5.05 7.42 7.22 7.5 7.38 6.39 5.38
367 289 133 185 284 311 194 123
65.5 48.6 35.7 30.9 45.1 42 35.5 37.2
20.3 17.1 5.92 7.76 13.5 14.4 9.9 4.88 R
5,000 4,920 6,380 5,210 6,970 6,260 5,310 3,450
17.6 11.7 9.89 6.91 10.1 8.28 8.96 5.22 R
1.73 1.9 2.82 2.32 U 1.65 0 U 2.2 U 2.27 U
34 25.3 21 10.3 25.9 19.5 14.4 11.5
197 127 58.3 42.5 126 114 67.1 101
20.7 14.9 8.64 5.06 13.6 11.4 7.61 7.61
238 152 64.2 55.6 148 141 88 115
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.78 U
123 87.2 57.7 36.4 84.4 71.1 54.1 62.7
9.33 8.06 2.32 U 3.05 6.9 8.55 3.52 2.46 U
7.46 4.31 11.3 2.85 11.1 6.11 4.84 4.02 R
304 303 420 355 441 402 373 248
1,060 1,010 2,810 2,090 2,050 1,640 1,850 1,300
4,820 4,650 6,660 5,770 7,020 6,480 5,030 3,590
89.6 68.4 55.3 79.9 80.9 94.9 67.6 59.5
124 82.4 55.1 44.6 77.1 70.3 65 99.2
7,410 7,020 11,600 9,980 11,400 10,400 8,970 5,370
17.9 13.5 6.67 7.9 12.9 13.5 10.1 2.27 U
49 36.9 45.3 49.3 53.9 56.1 44.2 29.9
28.8 19.1 13.9 23.1 22.4 27.6 21.2 15.7
12.9 7.62 20.6 7.88 17.8 10.3 8.96 6.36
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.62 U
20 16.3 26.3 22.7 24.8 22.7 24.8 12.1
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.41 U
12.4 10.5 10.9 8.38 12.4 10.9 9.96 5.5
10,400 9,870 14,400 10,900 15,200 13,100 11,100 6,070
24.2 21.9 15.4 22 15.9 19.8 22.8 10.1
1,670 1,520 2,300 1,810 2,360 2,070 1,890 1,020
813 769 978 829 1,080 992 862 498
88.9 47.7 22.2 52.2 39.2 56.6 56.3 58.6
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
689 474 219 325 505 561 348 404
151 115 14.5 40.5 106 119 58.4 61.8
582 517 658 618 694 669 636 330
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 94 NonDioxin
PCB 96 NonDioxin
PCB 103 NonDioxin
PCB 104 NonDioxin
PCB 106 NonDioxin
PCB 107 NonDioxin
PCB 108/124 NonDioxin
PCB 110/115 NonDioxin
PCB 111 NonDioxin
PCB 112 NonDioxin
PCB 120 NonDioxin
PCB 121 NonDioxin
PCB 122 NonDioxin
PCB 127 NonDioxin
PCB 128/166 NonDioxin
PCB 129/138/160/163 NonDioxin
PCB 130 NonDioxin
PCB 131 NonDioxin
PCB 132 NonDioxin
PCB 133 NonDioxin
PCB 134/143 NonDioxin
PCB 135/151/154 NonDioxin
PCB 136 NonDioxin
PCB 137 NonDioxin
PCB 139/140 NonDioxin
PCB 141 NonDioxin
PCB 142 NonDioxin
PCB 144 NonDioxin
PCB 145 NonDioxin
PCB 146 NonDioxin
PCB 147/149 NonDioxin
PCB 148 NonDioxin
PCB 150 NonDioxin
PCB 152 NonDioxin
PCB 153/168 NonDioxin
PCB 155 NonDioxin
PCB 158 NonDioxin
PCB 159 NonDioxin
PCB 161 NonDioxin
PCB 162 NonDioxin
PCB 164 NonDioxin
PCB 165 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI405-BC-WB-2 GC-TI406-BC-ED-1 GC-TI406-BC-ED-2GC-TI404-BC-ED-2 GC-TI404-BC-WB-1 GC-TI404-BC-WB-2 GC-TI405-BC-ED-1 GC-TI405-BC-ED-2 GC-TI405-BC-WB-1
GC-TI405-BC GC-TI405-BC GC-TI405-BC GC-TI405-BC GC-TI406-BC GC-TI406-BCGC-TI404-BC GC-TI404-BC GC-TI404-BC
Blue CrabBlue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabEdible Tissue Whole Body Whole Body Edible Tissue Edible Tissue Whole Body Whole Body Edible Tissue Edible Tissue
18.8 10.9 14.5 18.5 15.7 18 15.4 8.03
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
6.23 0 U 2.32 U 2.32 U 0 U 0 U 2.37 5.02
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
450 357 471 438 538 517 412 266
25.6 17.3 6.9 12.9 18.1 21.4 13.2 13
624 481 390 391 566 562 411 338
25.8 24.6 21.1 20 31.2 30.3 23.1 13.9
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
113 106 131 114 149 139 125 70.6
12.1 11.8 11.8 12.2 15.3 15.4 15.5 8.15
3.23 U 3.33 U 2.32 U 2.32 U 3.5 U 3.42 U 2.2 U 2.37 U
10.6 R 11 R 2.32 U 2.32 U 11.5 R 11.2 R 2.2 U 8.36
1,610 1,500 2,070 1,460 2,230 1,860 1,820 929
13,900 13,000 16,800 11,600 19,000 15,900 12,700 7,190
200 161 108 146 193 214 113 81.9
3.58 1.63 4.53 6.84 2.65 4.07 6.43 3.55
19.8 15.7 4.94 6.27 14.9 15.4 10.2 8.02
344 326 393 339 459 426 361 192
4.79 0 U 4.64 U 4.63 U 0 U 0 U 4.39 U 4.54 U
1,080 1,070 1,510 1,140 1,560 1,340 1,110 688
11.2 8.3 4.25 7.86 5.62 7.73 8.35 3.14
693 663 732 582 906 812 613 348
286 277 393 278 416 347 298 176
63.9 43.7 24.3 27.6 50.1 51.4 35.4 34.9
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
27.7 18.3 10.6 19 19.5 24.3 16.5 14.6
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
2,900 2,650 3,030 2,560 3,720 3,420 2,720 1,400
870 582 269 563 589 756 445 440
78.3 78.6 102 88.9 108 100 90 48.4
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
24,900 23,500 31,800 24,200 35,600 31,000 24,000 11,600
34.3 33.3 49.1 44.2 48.9 46 48.3 23.1
1,610 1,560 1,920 1,390 2,250 1,930 1,450 795
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
51.5 47 49.9 41.5 64.2 58.8 42.8 25.6
30.1 20 7.5 19.4 19.2 26 15.3 2.27 U
19.7 17.7 19.2 19.7 23.8 24 20.8 11.8
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 170 NonDioxin
PCB 171/173 NonDioxin
PCB 172 NonDioxin
PCB 174 NonDioxin
PCB 175 NonDioxin
PCB 176 NonDioxin
PCB 177 NonDioxin
PCB 178 NonDioxin
PCB 179 NonDioxin
PCB 180/193 NonDioxin
PCB 181 NonDioxin
PCB 182 NonDioxin
PCB 183/185 NonDioxin
PCB 184 NonDioxin
PCB 186 NonDioxin
PCB 187 NonDioxin
PCB 188 NonDioxin
PCB 190 NonDioxin
PCB 191 NonDioxin
PCB 192 NonDioxin
PCB 194 NonDioxin
PCB 195 NonDioxin
PCB 196 NonDioxin
PCB 197/200 NonDioxin
PCB 198/199 NonDioxin
PCB 201 NonDioxin
PCB 202 NonDioxin
PCB 203 NonDioxin
PCB 204 NonDioxin
PCB 205 NonDioxin
PCB 206 NonDioxin
PCB 207 NonDioxin
PCB 208 NonDioxin
PCB 209 NonDioxin
PCB Nondioxin
Total PCB Congeners
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI405-BC-WB-2 GC-TI406-BC-ED-1 GC-TI406-BC-ED-2GC-TI404-BC-ED-2 GC-TI404-BC-WB-1 GC-TI404-BC-WB-2 GC-TI405-BC-ED-1 GC-TI405-BC-ED-2 GC-TI405-BC-WB-1
GC-TI405-BC GC-TI405-BC GC-TI405-BC GC-TI405-BC GC-TI406-BC GC-TI406-BCGC-TI404-BC GC-TI404-BC GC-TI404-BC
Blue CrabBlue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabEdible Tissue Whole Body Whole Body Edible Tissue Edible Tissue Whole Body Whole Body Edible Tissue Edible Tissue
2,240 2,230 2,000 1,260 2,890 2,420 1,470 728
899 865 1,150 741 1,290 1,040 842 428
439 441 371 303 552 507 265 145
40.7 28.8 9.87 15.3 28.8 31.5 15.3 22.8
130 127 156 127 178 160 134 73
12.2 7.53 3.02 8.02 6.75 9.63 5.66 4.62
693 598 273 354 683 721 255 183
880 820 1,180 979 1,240 1,120 966 506
13.4 9.87 2.32 U 4.03 7.4 9.61 6.08 6.18
8,580 8,340 8,760 6,380 11,300 9,840 6,800 3,380
32.6 33.5 40.2 28 46 38.6 27.2 14.8
23.8 23.6 22.5 19.8 28.9 27.1 22.8 11.5
3,100 2,990 3,940 2,780 4,460 3,760 3,020 1,540
12.4 10.6 16.5 14.4 16.3 15.1 16.9 9.58
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
6,060 5,600 5,510 4,590 7,300 6,710 4,620 3,060
43.4 41.7 59.3 50.2 59.8 54.3 50.1 27
650 643 602 443 846 746 463 241
148 148 166 122 205 178 121 62.6
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
946 942 793 630 1,190 1,090 716 343
303 308 226 145 369 318 178 94.3
638 655 557 429 812 730 508 264
88.1 82 87.5 65.5 111 97.3 78.8 51.8
1,210 1,180 737 705 1,350 1,320 747 441
199 176 200 176 247 231 197 121
542 439 582 552 643 623 626 349
762 755 525 491 885 856 598 328
0 U 0 U 2.32 U 2.32 U 0 U 0 U 2.2 U 2.27 U
21.7 21 15.5 13 25.1 23.4 13.3 8.51
312 281 209 200 318 310 290 159
61 55.5 40.1 38.3 61.2 59.6 56.6 30.4
193 163 120 123 173 174 168 97.4
183 151 145 121 177 162 169 104
123,000 115,000 149,000 116,000 167,000 148,000 117,000 67,800
142,000 133,000 171,000 135,000 194,000 172,000 136,000 78,800
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 77 Dioxin 0.0001
PCB 81 Dioxin 0.0003
PCB 105 Dioxin 0.00003
PCB 114 Dioxin 0.00003
PCB 118 Dioxin 0.00003
PCB 123 Dioxin 0.00003
PCB 126 Dioxin 0.1
PCB 156/157 Dioxin 0.00003
PCB 167 Dioxin 0.00003
PCB 169 Dioxin 0.03
PCB 189 Dioxin 0.00003
PCB Dioxin
PCB 1 NonDioxin
PCB 2 NonDioxin
PCB 3 NonDioxin
PCB 4 NonDioxin
PCB 5 NonDioxin
PCB 6 NonDioxin
PCB 7 NonDioxin
PCB 8 NonDioxin
PCB 9 NonDioxin
PCB 10 NonDioxin
PCB 11 NonDioxin
PCB 12/13 NonDioxin
PCB 14 NonDioxin
PCB 15 NonDioxin
PCB 16 NonDioxin
PCB 17 NonDioxin
PCB 18/30 NonDioxin
PCB 19 NonDioxin
PCB 20/28 NonDioxin
PCB 21/33 NonDioxin
PCB 22 NonDioxin
PCB 23 NonDioxin
PCB 24 NonDioxin
PCB 25 NonDioxin
PCB 26/29 NonDioxin
PCB 27 NonDioxin
PCB 31 NonDioxin
PCB 32 NonDioxin
PCB 34 NonDioxin
PCB 35 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
0.0451 217 R 0.0217 659 0.0659 640 0.064 517 0.0517 567 0.0567 472 0.0472 359 0.0359 271
0.00681 38.7 0.01161 31.3 0.00939 28.7 0.00861 24.9 0.00747 27.7 0.00831 24.9 0.00747 24.9 0.00747 15.1
0.0672 4,420 0.1326 3,700 0.111 4,280 0.1284 3,360 0.1008 3,960 0.1188 3,270 0.0981 3,060 0.0918 2,140
0.00471 310 0.0093 272 0.00816 276 0.00828 234 0.00702 266 0.00798 235 0.00705 239 0.00717 150
0.2028 14,100 0.423 11,800 0.354 13,800 0.414 10,900 0.327 12,800 0.384 10,700 0.321 10,100 0.303 6,950
0.0042 301 0.00903 241 0.00723 261 0.00783 242 0.00726 253 0.00759 239 0.00717 232 0.00696 141
2.26 42.6 4.26 36.5 3.65 38.4 3.84 33.3 3.33 36.7 3.67 32.9 3.29 31.8 3.18 16.8
0.02331 1,760 0.0528 1,510 0.0453 1,450 0.0435 1,310 0.0393 1,480 0.0444 1,390 0.0417 1,580 0.0474 964
0.01143 851 0.02553 735 0.02205 738 0.02214 643 0.01929 761 0.02283 696 0.02088 827 0.02481 459
0 0 U 0 0 U 0 6.45 U 0 6.38 U 0 0 U 0 0 U 0 6.39 U 0 6.44 U
0.001695 129 0.00387 117 0.00351 87.4 0.002622 84.4 0.002532 94.3 0.002829 92.9 0.002787 114 0.00342 64.9
4.93 4.28 4.54 3.89 4.32 3.84 3.71 2.04
2.55 U 4.44 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
3 U 5.22 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
18.3 21.2 12 9.98 11.5 9.96 9.91 5.76
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
6.62 8.58 5.69 3.04 6.22 4.39 7.72 2.33
1.57 U 2.73 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
31.4 40.2 22.7 7.53 21.5 10.5 17.9 12.1
1.2 U 2.09 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
63.3 60.6 91.6 40 89.3 52.3 82.8 48.5
15.2 14.7 22.8 6.93 19.4 7.69 9.57 6.39
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
642 602 539 366 461 329 239 232
9.53 11.4 6.97 4.7 7.66 6.12 9.65 3.35
26.2 27.8 48.6 22.4 43.8 24.6 29.9 21.3
40.5 52.5 75.6 34.5 75.9 46.7 76.9 15.9
4.7 3.12 U 3.47 4.09 2.57 2.91 4.47 U 2.48
7,140 6,350 6,530 4,910 5,710 4,460 3,360 3,220
50.1 40.1 36.5 18.6 40.3 27.9 51 21.2
47.4 59.6 100 22.2 85.3 28.3 43.3 35.2
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
22.2 29.6 48.6 15.5 46.1 22.2 38.9 22.7
36.5 51.7 77.8 30.7 83.4 50.4 99.3 25.2
9.32 11.1 18.5 7.35 19.9 12.1 23.8 3.61
128 197 295 93.8 266 120 185 127
40.8 43 74 24.8 69.3 33.7 55.7 30.3
4.43 4.14 6.18 2.28 U 6.78 2.44 8.48 2.29 U
0 R 1.94 R 6.86 2.72 6.41 3.41 5.13 2.85
GC-TI-INNER-BC-ED-2 GC-TI-INNER-BC-WB-1 GC-TI-INNER-BC-WB-2GC-TI-INNER-MIDDLE-OUTER-BC-HP-1GC-TIMIDDLE-BC-ED-1GC-TI406-BC-ED-2 GC-TI406-BC-WB-1 GC-TI406-BC-WB-2 GC-TI-INNER-BC-ED-1
GC-TI406-BC GC-TI406-BC GC-TI406-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-IN-MID-OUT-BC GC-TIMIDDLE-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabWhole Body Whole Body Edible Tissue Edible Tissue Whole Body Whole BodyEdible Tissue Hepat Edible Tissue
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 36 NonDioxin
PCB 37 NonDioxin
PCB 38 NonDioxin
PCB 39 NonDioxin
PCB 40/41/71 NonDioxin
PCB 42 NonDioxin
PCB 43 NonDioxin
PCB 44/47/65 NonDioxin
PCB 45/51 NonDioxin
PCB 46 NonDioxin
PCB 48 NonDioxin
PCB 49/69 NonDioxin
PCB 50/53 NonDioxin
PCB 52 NonDioxin
PCB 54 NonDioxin
PCB 55 NonDioxin
PCB 56 NonDioxin
PCB 57 NonDioxin
PCB 58 NonDioxin
PCB 59/62/75 NonDioxin
PCB 60 NonDioxin
PCB 61/70/74/76 NonDioxin
PCB 63 NonDioxin
PCB 64 NonDioxin
PCB 66 NonDioxin
PCB 67 NonDioxin
PCB 68 NonDioxin
PCB 72 NonDioxin
PCB 73 NonDioxin
PCB 78 NonDioxin
PCB 79 NonDioxin
PCB 80 NonDioxin
PCB 82 NonDioxin
PCB 83/99 NonDioxin
PCB 84 NonDioxin
PCB 85/116/117 NonDioxin
PCB 86/87/97/109/119/125 NonDioxin
PCB 88/91 NonDioxin
PCB 89 NonDioxin
PCB 90/101/113 NonDioxin
PCB 92 NonDioxin
PCB 93/95/98/100/102 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI-INNER-BC-ED-2 GC-TI-INNER-BC-WB-1 GC-TI-INNER-BC-WB-2GC-TI-INNER-MIDDLE-OUTER-BC-HP-1GC-TIMIDDLE-BC-ED-1GC-TI406-BC-ED-2 GC-TI406-BC-WB-1 GC-TI406-BC-WB-2 GC-TI-INNER-BC-ED-1
GC-TI406-BC GC-TI406-BC GC-TI406-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-IN-MID-OUT-BC GC-TIMIDDLE-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabWhole Body Whole Body Edible Tissue Edible Tissue Whole Body Whole BodyEdible Tissue Hepat Edible Tissue
4.22 2.31 6.87 2.79 5.09 1.99 4.47 U 4.26
1,360 1,130 822 749 728 666 460 367
0 U 0 U 4.74 2.28 U 3.51 0 U 4.47 U 2.29 U
6.65 6.21 9.37 5.91 8.67 6.13 6.67 5.68
259 262 390 141 444 272 598 135
40.4 45 119 42.5 101 44.8 50.5 60.9
13 9.02 R 20.7 13.1 23.2 18.1 30.4 2.29 U
5,840 5,070 5,630 5,570 5,110 5,010 3,620 4,050
9.25 3.84 R 21.7 13.3 19.7 13.5 13.9 9.1
0 U 0 U 4.31 2.36 3.19 1.68 4.47 U 2.29 U
18.4 19.5 41 23.1 41.2 28.5 41.9 16.7
99.9 145 285 75 260 107 187 134
10.4 12.5 29.9 13.1 29.7 17.8 29.3 8.21
126 171 341 114 336 174 323 86.3
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
0 U 0 U 5.89 U 2.28 U 0 U 0 U 4.47 U 2.29 U
68.7 84.8 199 49.1 186 78.1 150 94.7
6.33 6.19 7.45 2.28 U 11 6.07 21.1 2.29 U
6.14 4.06 R 5.16 U 2.28 U 0 R 0 R 7.87 R 2.29 U
394 331 413 363 374 334 262 279
1,660 1,180 1,720 1,200 1,490 1,100 850 711
5,570 5,060 5,250 4,270 4,900 4,170 3,910 2,720
78.2 80.9 93.5 47.5 85.6 52 63.1 62.6
74.2 102 220 70.8 193 83.2 114 102
9,410 7,470 8,620 6,520 7,750 6,160 5,260 3,840
12.6 8.05 U 4.55 U 2.28 U 0 U 0 U 4.47 U 2.29 U
48.9 43.4 53.1 33 51.9 37.5 48.5 40
24 22.6 42.2 16.8 45.1 27.3 53.3 14.7
10 9.17 8.54 2.28 U 9.2 3.19 11.1 2.62
0 U 0 U 5.54 U 2.28 U 0 U 0 U 4.47 U 2.29 U
24.3 16 29.3 21.1 27.9 21.9 24 19.6
0 U 0 U 5.11 U 2.28 U 0 U 0 U 4.47 U 2.29 U
11 8.89 18.6 10.1 18.7 12.6 18.9 14.2
12,200 9,880 10,900 10,600 10,000 9,710 7,500 7,300
21.4 12.5 29 32.6 28.1 30.6 25.6 19.6
2,010 1,550 1,870 1,670 1,690 1,530 1,190 1,230
941 771 934 871 894 845 780 679
57.8 60.3 136 56.8 117 58.5 62.7 64.7
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
468 592 891 352 816 424 603 457
96.3 126 169 62.9 201 129 292 55.6
659 484 545 545 523 521 460 319
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 94 NonDioxin
PCB 96 NonDioxin
PCB 103 NonDioxin
PCB 104 NonDioxin
PCB 106 NonDioxin
PCB 107 NonDioxin
PCB 108/124 NonDioxin
PCB 110/115 NonDioxin
PCB 111 NonDioxin
PCB 112 NonDioxin
PCB 120 NonDioxin
PCB 121 NonDioxin
PCB 122 NonDioxin
PCB 127 NonDioxin
PCB 128/166 NonDioxin
PCB 129/138/160/163 NonDioxin
PCB 130 NonDioxin
PCB 131 NonDioxin
PCB 132 NonDioxin
PCB 133 NonDioxin
PCB 134/143 NonDioxin
PCB 135/151/154 NonDioxin
PCB 136 NonDioxin
PCB 137 NonDioxin
PCB 139/140 NonDioxin
PCB 141 NonDioxin
PCB 142 NonDioxin
PCB 144 NonDioxin
PCB 145 NonDioxin
PCB 146 NonDioxin
PCB 147/149 NonDioxin
PCB 148 NonDioxin
PCB 150 NonDioxin
PCB 152 NonDioxin
PCB 153/168 NonDioxin
PCB 155 NonDioxin
PCB 158 NonDioxin
PCB 159 NonDioxin
PCB 161 NonDioxin
PCB 162 NonDioxin
PCB 164 NonDioxin
PCB 165 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI-INNER-BC-ED-2 GC-TI-INNER-BC-WB-1 GC-TI-INNER-BC-WB-2GC-TI-INNER-MIDDLE-OUTER-BC-HP-1GC-TIMIDDLE-BC-ED-1GC-TI406-BC-ED-2 GC-TI406-BC-WB-1 GC-TI406-BC-WB-2 GC-TI-INNER-BC-ED-1
GC-TI406-BC GC-TI406-BC GC-TI406-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-IN-MID-OUT-BC GC-TIMIDDLE-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabWhole Body Whole Body Edible Tissue Edible Tissue Whole Body Whole BodyEdible Tissue Hepat Edible Tissue
15.8 11.5 21.1 8.4 21.3 12.3 22 4.98
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
1.86 3.15 10.4 3.77 8.99 4.12 4.98 4.88
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
0 U 0 U 4.46 U 3.7 U 0 U 0 U 4.47 U 3.24 U
459 403 460 326 519 430 686 336
17.6 20.8 33.4 11.5 36 20.6 43.3 23.3
497 515 837 388 800 476 693 479
27.9 25.6 22.5 25.7 43.9 48.5 105 14.4
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
136 110 128 128 146 148 196 96.6
16.5 12.6 12.5 13.4 13 13.7 14.3 9.95
1.81 U 3.14 U 10.7 4.29 U 10.5 2.88 10 7.21
5.94 R 15.6 R 15.5 20.3 15.6 19 15.7 14.6
1,960 1,500 1,650 1,690 1,610 1,640 1,500 1,470
14,700 12,800 11,300 10,400 11,300 10,700 11,400 9,180
156 168 172 78.2 169 102 162 128
5.05 2.23 8.12 3.46 6.01 2.46 4.47 U 3.55 R
14.2 15.8 36.9 11.6 36.6 18.5 35.6 35.8
402 327 348 345 543 562 1,100 182
0 U 0 U 11.4 4.56 U 8.44 0 U 8.93 U 7.98
1,220 1,040 852 938 823 882 742 719
8.18 4.78 10.2 12.7 9.32 11 6.79 10.3
728 647 516 582 519 566 527 429
330 278 270 279 247 251 180 213
46.3 54.1 29.6 22.6 37.6 33.5 60.5 31.1
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
19.8 21.1 32.2 15.9 31 19.2 27.5 15
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
3,140 2,630 2,730 2,280 2,960 2,660 3,600 2,220
573 664 950 402 853 451 574 550
95.8 74 69.2 80.6 68.2 76.3 65.5 57.3
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
27,600 22,500 21,600 20,700 20,800 20,000 18,400 14,600
48.4 32.6 58.5 44.8 50.6 39.9 27.9 30.8
1,720 1,510 1,280 1,200 1,250 1,190 1,150 758
0 U 0 U 2.29 U 2.28 U 2.2 2.44 8.5 2.29 U
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
51.7 47.5 48.3 40.3 66.9 63.2 120 34.4
19.7 13.3 U 21.3 2.28 U 24.7 9.87 34.3 30.3
22.8 18.7 22.2 23.8 34.9 37.4 71.2 13.2
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 170 NonDioxin
PCB 171/173 NonDioxin
PCB 172 NonDioxin
PCB 174 NonDioxin
PCB 175 NonDioxin
PCB 176 NonDioxin
PCB 177 NonDioxin
PCB 178 NonDioxin
PCB 179 NonDioxin
PCB 180/193 NonDioxin
PCB 181 NonDioxin
PCB 182 NonDioxin
PCB 183/185 NonDioxin
PCB 184 NonDioxin
PCB 186 NonDioxin
PCB 187 NonDioxin
PCB 188 NonDioxin
PCB 190 NonDioxin
PCB 191 NonDioxin
PCB 192 NonDioxin
PCB 194 NonDioxin
PCB 195 NonDioxin
PCB 196 NonDioxin
PCB 197/200 NonDioxin
PCB 198/199 NonDioxin
PCB 201 NonDioxin
PCB 202 NonDioxin
PCB 203 NonDioxin
PCB 204 NonDioxin
PCB 205 NonDioxin
PCB 206 NonDioxin
PCB 207 NonDioxin
PCB 208 NonDioxin
PCB 209 NonDioxin
PCB Nondioxin
Total PCB Congeners
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TI-INNER-BC-ED-2 GC-TI-INNER-BC-WB-1 GC-TI-INNER-BC-WB-2GC-TI-INNER-MIDDLE-OUTER-BC-HP-1GC-TIMIDDLE-BC-ED-1GC-TI406-BC-ED-2 GC-TI406-BC-WB-1 GC-TI406-BC-WB-2 GC-TI-INNER-BC-ED-1
GC-TI406-BC GC-TI406-BC GC-TI406-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-INNER-BC GC-TI-IN-MID-OUT-BC GC-TIMIDDLE-BC
Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabWhole Body Whole Body Edible Tissue Edible Tissue Whole Body Whole BodyEdible Tissue Hepat Edible Tissue
2,040 2,000 679 1,090 757 1,060 979 888
979 820 622 687 571 612 426 521
381 392 160 195 245 279 486 166
23.9 34.9 14.7 10.3 17.1 14.3 24.1 32.4
150 124 112 102 110 103 106 73.4
7.02 7.37 14.7 7.58 12.4 7.09 5.89 13.1
471 585 366 152 330 173 226 326
1,040 813 923 824 1,100 1,050 1,610 458
8.59 10.5 23.3 8.67 19.9 9.14 10.3 23.8
8,540 7,680 5,230 5,740 5,350 5,720 5,680 4,380
33 29.5 19.3 24.5 17.9 21.5 14 17.6
26 21.3 18.4 26.1 18.3 23.8 18 23.4
3,490 2,900 2,540 2,500 2,370 2,320 1,880 2,080
16.7 12 21.6 17.3 19 15.6 11.5 14.9
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
5,730 5,580 4,670 4,660 4,980 5,010 5,860 4,880
52.3 39.5 39.1 42.6 35.9 38 26.7 32.1
619 595 290 341 300 338 330 246
151 137 76.9 87.8 86.3 95 113 61.1
0 U 0 U 2.29 U 2.28 U 0 U 0 U 4.47 U 2.29 U
940 871 423 560 463 565 577 548
262 272 72.3 134 72.7 117 73.9 109
650 602 353 482 345 437 324 366
92.8 86.2 90.7 94.8 81.2 83.1 54 76.9
1,060 1,100 570 733 720 853 1,150 809
222 192 212 198 193 181 138 181
648 490 745 632 699 614 568 448
768 724 293 472 302 430 326 505
0 U 0 U 2.29 U 2.42 0 U 1.72 4.47 U 2.29 U
18.7 19.8 4.61 9.39 5.87 9.42 9.48 10.8
329 276 149 268 160 246 192 322
63.9 52.9 42.4 71.9 39.8 60.5 32.3 58.3
185 154 157 260 166 240 192 194
180 148 159 271 151 230 130 219
133,000 115,000 111,000 100,000 106,000 98,400 94,600 76,500
155,000 134,000 132,000 117,000 127,000 116,000 111,000 87,700
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 77 Dioxin 0.0001
PCB 81 Dioxin 0.0003
PCB 105 Dioxin 0.00003
PCB 114 Dioxin 0.00003
PCB 118 Dioxin 0.00003
PCB 123 Dioxin 0.00003
PCB 126 Dioxin 0.1
PCB 156/157 Dioxin 0.00003
PCB 167 Dioxin 0.00003
PCB 169 Dioxin 0.03
PCB 189 Dioxin 0.00003
PCB Dioxin
PCB 1 NonDioxin
PCB 2 NonDioxin
PCB 3 NonDioxin
PCB 4 NonDioxin
PCB 5 NonDioxin
PCB 6 NonDioxin
PCB 7 NonDioxin
PCB 8 NonDioxin
PCB 9 NonDioxin
PCB 10 NonDioxin
PCB 11 NonDioxin
PCB 12/13 NonDioxin
PCB 14 NonDioxin
PCB 15 NonDioxin
PCB 16 NonDioxin
PCB 17 NonDioxin
PCB 18/30 NonDioxin
PCB 19 NonDioxin
PCB 20/28 NonDioxin
PCB 21/33 NonDioxin
PCB 22 NonDioxin
PCB 23 NonDioxin
PCB 24 NonDioxin
PCB 25 NonDioxin
PCB 26/29 NonDioxin
PCB 27 NonDioxin
PCB 31 NonDioxin
PCB 32 NonDioxin
PCB 34 NonDioxin
PCB 35 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
0.0271 203 0.0203 263 0.0263 296 0.0296 246 0.0246 291 0.0291 157 0.0157 150 0.015 198
0.00453 10.5 0.00315 13.7 0.00411 17.9 0.00537 14.5 0.00435 16.9 0.00507 8.21 0.002463 6.53 R 0.001959 10.1
0.0642 1,500 0.045 2,010 0.0603 2,400 0.072 1,930 0.0579 2,310 0.0693 1,250 0.0375 1,200 0.036 1,600
0.0045 99.5 0.002985 138 0.00414 175 0.00525 138 0.00414 167 0.00501 79.6 0.002388 77.9 0.002337 114
0.2085 4,700 0.141 6,070 0.1821 7,840 0.2352 6,200 0.186 7,230 0.2169 4,060 0.1218 3,690 0.1107 5,250
0.00423 91.5 0.002745 139 0.00417 167 0.00501 131 0.00393 166 0.00498 82.7 0.002481 74.7 0.002241 101
1.68 12.4 1.24 17.3 1.73 21 2.1 17.8 1.78 21.5 2.15 9.2 0.92 9.16 0.916 12.4 R
0.02892 600 0.018 872 0.02616 1,140 0.0342 872 0.02616 1,080 0.0324 550 0.0165 582 0.01746 715
0.01377 303 0.00909 423 0.01269 562 0.01686 449 0.01347 539 0.01617 259 0.00777 275 0.00825 347
0 4.41 U 0 5.65 U 0 0 U 0 0 U 0 0 U 0 3.38 U 0 4.54 U 0 5.61 U
0.001947 39.8 0.001194 56.6 0.001698 78.7 0.002361 60.4 0.001812 73.2 0.002196 39.1 0.001173 43.3 0.001299 46.5
1.48 2.05 2.51 2.1 2.53 1.13 1.11 0.268
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
4.94 8.34 6.93 6.32 8.79 5.09 7.99 8.12
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
2.28 U 3.48 3.84 2.15 4.7 2.29 U 2.76 2.29 U
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
10.5 17.2 13.7 12.6 17.4 13.4 17.6 14
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
42 66.8 58.1 53.3 71.4 51.7 58.7 57.4
5.59 8.25 7.28 6.7 8.63 6.9 8.04 7.29
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
210 232 234 218 234 173 179 209
3.04 5.88 5.12 4.88 6.97 3.29 4.73 4.42
14.6 28.2 23.7 18.9 28.7 24.2 29.2 26.2
13.9 22.8 33 31.4 38.4 15.4 21.9 21.4
2.28 U 2.61 1.78 0 U 1.86 2.29 U 3.08 3.79
2,880 3,260 3,260 3,010 3,290 2,540 2,330 3,050
14.7 24.1 29.6 24.8 31.9 20.9 24.9 25.9
33.1 43.6 37.5 35.9 43.5 52.3 57.4 47.3
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
42 25.6 27.3 41.1 29.4 29.7 32.3 27.4
21.3 31.6 46 43 51.1 26.3 34.8 31.1
3.61 5.85 9.28 9.22 11 3.85 5.03 5.21
153 146 143 162 157 170 210 169
22.4 37.5 37.4 31.7 42.7 29.5 41.4 37.4
2.28 U 2.99 2.38 2.36 4.57 2.29 U 2.25 U 2.29 U
2.28 U 3.42 3.49 1.43 3.91 2.9 3.44 3.17
GC-TIMIDDLE-BC-ED-3GC-TIMIDDLE-BC-WB-1GC-TIMIDDLE-BC-WB-2GC-TIMIDDLE-BC-WB-3GC-TI-OUTER-BC-ED-1GC-TI-OUTER-BC-ED-2GC-TIMIDDLE-BC-ED-1GC-TIMIDDLE-BC-ED-2 GC-TI-OUTER-BC-ED-3
GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TI-OUTER-BC GC-TI-OUTER-BC GC-TI-OUTER-BCGC-TIMIDDLE-BC
Blue CrabBlue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabBlue Crab Blue CrabWhole Body Edible Tissue Edible Tissue Edible TissueEdible Tissue Edible Tissue Edible Tissue Whole Body Whole Body
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 36 NonDioxin
PCB 37 NonDioxin
PCB 38 NonDioxin
PCB 39 NonDioxin
PCB 40/41/71 NonDioxin
PCB 42 NonDioxin
PCB 43 NonDioxin
PCB 44/47/65 NonDioxin
PCB 45/51 NonDioxin
PCB 46 NonDioxin
PCB 48 NonDioxin
PCB 49/69 NonDioxin
PCB 50/53 NonDioxin
PCB 52 NonDioxin
PCB 54 NonDioxin
PCB 55 NonDioxin
PCB 56 NonDioxin
PCB 57 NonDioxin
PCB 58 NonDioxin
PCB 59/62/75 NonDioxin
PCB 60 NonDioxin
PCB 61/70/74/76 NonDioxin
PCB 63 NonDioxin
PCB 64 NonDioxin
PCB 66 NonDioxin
PCB 67 NonDioxin
PCB 68 NonDioxin
PCB 72 NonDioxin
PCB 73 NonDioxin
PCB 78 NonDioxin
PCB 79 NonDioxin
PCB 80 NonDioxin
PCB 82 NonDioxin
PCB 83/99 NonDioxin
PCB 84 NonDioxin
PCB 85/116/117 NonDioxin
PCB 86/87/97/109/119/125 NonDioxin
PCB 88/91 NonDioxin
PCB 89 NonDioxin
PCB 90/101/113 NonDioxin
PCB 92 NonDioxin
PCB 93/95/98/100/102 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TIMIDDLE-BC-ED-3GC-TIMIDDLE-BC-WB-1GC-TIMIDDLE-BC-WB-2GC-TIMIDDLE-BC-WB-3GC-TI-OUTER-BC-ED-1GC-TI-OUTER-BC-ED-2GC-TIMIDDLE-BC-ED-1GC-TIMIDDLE-BC-ED-2 GC-TI-OUTER-BC-ED-3
GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TI-OUTER-BC GC-TI-OUTER-BC GC-TI-OUTER-BCGC-TIMIDDLE-BC
Blue CrabBlue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabBlue Crab Blue CrabWhole Body Edible Tissue Edible Tissue Edible TissueEdible Tissue Edible Tissue Edible Tissue Whole Body Whole Body
3.79 4.62 3.06 2.74 3.29 5.34 5.44 6.19
285 349 393 334 381 213 209 259
2.29 2.3 U 0 U 1.65 0 U 2.29 U 2.25 U 2.29 U
5.04 6.19 5.96 5.49 6.33 5.56 5.8 4.93
121 167 265 254 291 126 162 141
45.3 60.5 58 46.7 57.6 76.3 93.2 76.9
4.27 5.78 8.54 11.5 12.9 4.16 R 5.02 5.12
2,730 3,610 3,930 2,980 3,610 2,760 2,600 4,380
6.73 10.7 10.4 8.72 11.6 11.9 13.9 12.8
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.84 2.38
11.3 18.7 23.8 19.8 25.4 17.2 23.1 19.6
105 135 149 128 150 172 239 186
6.52 9.56 14.1 12.9 15.3 8.88 12.7 11.3
67.1 100 153 138 164 84.8 141 116
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.47 U 2.87 U
60 93 110 85 109 116 141 114
2.32 2.75 5.93 7.54 8.04 2.29 U 2.88 2.63 U
2.94 5.51 R 0 R 2.12 R 0 R 5.35 6.29 R 5.27
189 256 274 209 258 197 180 287
500 719 750 597 757 478 434 519
1,830 2,530 3,050 2,410 2,930 1,730 1,650 2,250
60.6 76.7 62.7 61.3 72.8 66.3 69.5 59.6
99 101 105 103 105 126 162 126
2,980 3,500 4,240 3,610 4,010 2,560 2,340 3,500
17.9 18.3 0 U 12.9 13 17.9 18.9 R 19.5
44.7 45.3 42.4 45.8 46.2 36 35.6 36.7
16.4 19.1 25.5 26.7 29 12 15.6 13.4
3.04 4.84 5 5.28 6.65 3 2.91 2.65
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.37 U 2.76 U
13.9 18 20.8 16.7 19.7 14.9 16.8 19.2
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.44 U
8.83 13.8 15.5 11.6 15.3 15.7 21.6 19.1
5,050 6,120 7,360 5,730 6,520 4,720 4,730 6,390
12.1 18.9 21.3 15.9 20.8 19.2 26.2 22.1
804 1,160 1,220 911 1,170 795 796 1,060
463 638 707 551 679 512 556 668
53.3 64 64.1 55.9 63.6 65.8 88.2 66.2
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
402 548 498 458 564 488 677 516
49.6 62.8 122 117 129 47 76.8 56.8
224 293 359 290 341 242 252 305
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 94 NonDioxin
PCB 96 NonDioxin
PCB 103 NonDioxin
PCB 104 NonDioxin
PCB 106 NonDioxin
PCB 107 NonDioxin
PCB 108/124 NonDioxin
PCB 110/115 NonDioxin
PCB 111 NonDioxin
PCB 112 NonDioxin
PCB 120 NonDioxin
PCB 121 NonDioxin
PCB 122 NonDioxin
PCB 127 NonDioxin
PCB 128/166 NonDioxin
PCB 129/138/160/163 NonDioxin
PCB 130 NonDioxin
PCB 131 NonDioxin
PCB 132 NonDioxin
PCB 133 NonDioxin
PCB 134/143 NonDioxin
PCB 135/151/154 NonDioxin
PCB 136 NonDioxin
PCB 137 NonDioxin
PCB 139/140 NonDioxin
PCB 141 NonDioxin
PCB 142 NonDioxin
PCB 144 NonDioxin
PCB 145 NonDioxin
PCB 146 NonDioxin
PCB 147/149 NonDioxin
PCB 148 NonDioxin
PCB 150 NonDioxin
PCB 152 NonDioxin
PCB 153/168 NonDioxin
PCB 155 NonDioxin
PCB 158 NonDioxin
PCB 159 NonDioxin
PCB 161 NonDioxin
PCB 162 NonDioxin
PCB 164 NonDioxin
PCB 165 NonDioxin
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TIMIDDLE-BC-ED-3GC-TIMIDDLE-BC-WB-1GC-TIMIDDLE-BC-WB-2GC-TIMIDDLE-BC-WB-3GC-TI-OUTER-BC-ED-1GC-TI-OUTER-BC-ED-2GC-TIMIDDLE-BC-ED-1GC-TIMIDDLE-BC-ED-2 GC-TI-OUTER-BC-ED-3
GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TI-OUTER-BC GC-TI-OUTER-BC GC-TI-OUTER-BCGC-TIMIDDLE-BC
Blue CrabBlue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabBlue Crab Blue CrabWhole Body Edible Tissue Edible Tissue Edible TissueEdible Tissue Edible Tissue Edible Tissue Whole Body Whole Body
6.96 8.32 9.76 11.1 12.3 4.63 4.78 4.1
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
3.77 4.57 4.91 4.11 4.69 5.78 8.13 5.96
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
2.42 U 2.97 U 0 U 0 U 0 U 2.29 U 2.25 U 2.82 U
266 326 434 383 430 255 269 327
14.6 20.1 28.9 22.6 26.8 17.8 25.7 19
338 442 539 437 514 469 612 503
10.5 14.4 39.9 36.8 40.5 8.03 7.79 15.6
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
64.6 86 125 101 118 62.6 62 85.3
6.58 9.12 11.2 8.73 10.6 6.92 6.58 9.4
2.69 U 8.32 7.99 2.78 8.8 7.95 10.7 9.11
8.73 13.7 14.9 10.7 14.3 8.54 9.34 15
909 1,360 1,480 1,070 1,400 983 999 1,210
6,550 8,480 9,800 7,900 9,320 6,990 6,990 8,120
111 171 138 125 168 133 147 130
3.87 4.55 0 R 2.79 3.24 4.6 4.96 4.58
21.3 29.7 35.7 25.3 31.4 48.1 70.5 50
135 195 440 403 456 89.6 91.6 205
4.55 U 7.85 5.74 0 U 5.59 8.62 13.9 9.73
444 629 725 527 662 545 548 594
6.26 J 9.26 9.31 6.41 8.55 10.9 15.5 11.6
256 369 457 331 415 269 266 349
124 184 204 140 183 143 132 181
18.6 34.1 39.4 30.2 41.7 20.8 37.7 29.6
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
12.2 15.5 18.5 16.5 19 14.4 17.3 13.9
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
1,610 2,130 2,610 2,160 2,550 1,570 1,610 2,090
457 594 557 490 588 582 707 554
36.1 51.8 59.6 44.3 55.8 38.6 36.6 57.2
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.34 2.29 U
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
9,580 12,600 15,700 12,000 14,300 8,670 8,590 11,200
20.2 28 30 22.3 28 20.1 20.5 30.5
483 699 868 668 829 471 424 567
2.28 U 2.3 U 2.39 2.36 2.45 2.29 U 3.01 2.29 U
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
22.6 33.4 58.5 49.7 58.4 24.9 24 31.5
18.9 R 25.4 R 31.4 9.53 R 9.89 R 27.4 40.1 31.1
9.91 13 29.5 26.9 29.8 6.4 6.87 15.7
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 170 NonDioxin
PCB 171/173 NonDioxin
PCB 172 NonDioxin
PCB 174 NonDioxin
PCB 175 NonDioxin
PCB 176 NonDioxin
PCB 177 NonDioxin
PCB 178 NonDioxin
PCB 179 NonDioxin
PCB 180/193 NonDioxin
PCB 181 NonDioxin
PCB 182 NonDioxin
PCB 183/185 NonDioxin
PCB 184 NonDioxin
PCB 186 NonDioxin
PCB 187 NonDioxin
PCB 188 NonDioxin
PCB 190 NonDioxin
PCB 191 NonDioxin
PCB 192 NonDioxin
PCB 194 NonDioxin
PCB 195 NonDioxin
PCB 196 NonDioxin
PCB 197/200 NonDioxin
PCB 198/199 NonDioxin
PCB 201 NonDioxin
PCB 202 NonDioxin
PCB 203 NonDioxin
PCB 204 NonDioxin
PCB 205 NonDioxin
PCB 206 NonDioxin
PCB 207 NonDioxin
PCB 208 NonDioxin
PCB 209 NonDioxin
PCB Nondioxin
Total PCB Congeners
TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc
GC-TIMIDDLE-BC-ED-3GC-TIMIDDLE-BC-WB-1GC-TIMIDDLE-BC-WB-2GC-TIMIDDLE-BC-WB-3GC-TI-OUTER-BC-ED-1GC-TI-OUTER-BC-ED-2GC-TIMIDDLE-BC-ED-1GC-TIMIDDLE-BC-ED-2 GC-TI-OUTER-BC-ED-3
GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TIMIDDLE-BC GC-TI-OUTER-BC GC-TI-OUTER-BC GC-TI-OUTER-BCGC-TIMIDDLE-BC
Blue CrabBlue Crab Blue Crab Blue Crab Blue Crab Blue Crab Blue CrabBlue Crab Blue CrabWhole Body Edible Tissue Edible Tissue Edible TissueEdible Tissue Edible Tissue Edible Tissue Whole Body Whole Body
559 796 914 676 849 535 610 672
320 476 494 349 462 345 320 395
108 146 256 213 244 92.4 110 156
20.8 30.4 30.1 21.7 28.6 24.5 40.3 32.4
55 74.1 82.6 69.2 83.3 47.1 48.5 62.7
8 10.8 11.1 7.41 9.38 13.5 15.3 11.6
249 440 298 243 378 320 367 346
343 469 782 695 798 203 229 450
13.3 18.6 20 12.5 16.2 24.3 37.7 26.5
2,880 4,360 4,750 3,660 4,740 2,810 3,090 3,390
10.8 14.6 16.6 11.7 14.4 11.5 12 15.2
13.7 19.3 21.9 14.9 18.9 15.4 17.5 22
1,300 1,930 2,020 1,460 1,920 1,370 1,330 1,450
10.6 13.5 13.9 10.9 12.9 10.6 10.3 13.7
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
3,510 4,740 5,160 4,160 5,060 3,750 3,740 4,190
20.3 27.1 30.6 22.1 27 21.1 21.7 32.8
154 217 270 203 250 158 166 188
39.2 59 75.7 59.7 74.6 39.3 39.7 44.3
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
313 423 556 386 467 308 392 380
64.6 86.1 99.1 67.2 82.6 66.9 78 84.7
210 296 354 242 304 216 243 281
54.1 67.7 70.5 54.1 63.7 55.1 54.2 67.2
471 655 905 660 798 462 587 656
122 172 169 126 162 128 131 150
335 458 482 400 490 265 305 443
287 412 455 298 387 333 375 355
2.28 U 2.3 U 0 U 0 U 0 U 2.29 U 2.25 U 2.29 U
6.42 8.82 10.4 7.27 9.01 6.9 7.79 7.39
176 240 285 180 226 184 226 263
31.5 40.8 51 31.7 38.3 31.6 37.3 57.1
106 147 193 130 160 96.2 115 202
129 161 194 129 152 118 136 203
53,200 70,300 81,600 64,600 77,300 52,500 53,600 66,200
60,800 80,300 94,300 74,700 89,200 59,000 59,700 74,500
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 77 Dioxin 0.0001
PCB 81 Dioxin 0.0003
PCB 105 Dioxin 0.00003
PCB 114 Dioxin 0.00003
PCB 118 Dioxin 0.00003
PCB 123 Dioxin 0.00003
PCB 126 Dioxin 0.1
PCB 156/157 Dioxin 0.00003
PCB 167 Dioxin 0.00003
PCB 169 Dioxin 0.03
PCB 189 Dioxin 0.00003
PCB Dioxin
PCB 1 NonDioxin
PCB 2 NonDioxin
PCB 3 NonDioxin
PCB 4 NonDioxin
PCB 5 NonDioxin
PCB 6 NonDioxin
PCB 7 NonDioxin
PCB 8 NonDioxin
PCB 9 NonDioxin
PCB 10 NonDioxin
PCB 11 NonDioxin
PCB 12/13 NonDioxin
PCB 14 NonDioxin
PCB 15 NonDioxin
PCB 16 NonDioxin
PCB 17 NonDioxin
PCB 18/30 NonDioxin
PCB 19 NonDioxin
PCB 20/28 NonDioxin
PCB 21/33 NonDioxin
PCB 22 NonDioxin
PCB 23 NonDioxin
PCB 24 NonDioxin
PCB 25 NonDioxin
PCB 26/29 NonDioxin
PCB 27 NonDioxin
PCB 31 NonDioxin
PCB 32 NonDioxin
PCB 34 NonDioxin
PCB 35 NonDioxin
TEQ
0.0198
0.00303
0.048
0.00342
0.1575
0.00303
1.24
0.02145
0.01041
0
0.001395
GC-TI-OUTER-BC-ED-3
GC-TI-OUTER-BC
Blue CrabEdible Tissue
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 36 NonDioxin
PCB 37 NonDioxin
PCB 38 NonDioxin
PCB 39 NonDioxin
PCB 40/41/71 NonDioxin
PCB 42 NonDioxin
PCB 43 NonDioxin
PCB 44/47/65 NonDioxin
PCB 45/51 NonDioxin
PCB 46 NonDioxin
PCB 48 NonDioxin
PCB 49/69 NonDioxin
PCB 50/53 NonDioxin
PCB 52 NonDioxin
PCB 54 NonDioxin
PCB 55 NonDioxin
PCB 56 NonDioxin
PCB 57 NonDioxin
PCB 58 NonDioxin
PCB 59/62/75 NonDioxin
PCB 60 NonDioxin
PCB 61/70/74/76 NonDioxin
PCB 63 NonDioxin
PCB 64 NonDioxin
PCB 66 NonDioxin
PCB 67 NonDioxin
PCB 68 NonDioxin
PCB 72 NonDioxin
PCB 73 NonDioxin
PCB 78 NonDioxin
PCB 79 NonDioxin
PCB 80 NonDioxin
PCB 82 NonDioxin
PCB 83/99 NonDioxin
PCB 84 NonDioxin
PCB 85/116/117 NonDioxin
PCB 86/87/97/109/119/125 NonDioxin
PCB 88/91 NonDioxin
PCB 89 NonDioxin
PCB 90/101/113 NonDioxin
PCB 92 NonDioxin
PCB 93/95/98/100/102 NonDioxin
TEQ
GC-TI-OUTER-BC-ED-3
GC-TI-OUTER-BC
Blue CrabEdible Tissue
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 94 NonDioxin
PCB 96 NonDioxin
PCB 103 NonDioxin
PCB 104 NonDioxin
PCB 106 NonDioxin
PCB 107 NonDioxin
PCB 108/124 NonDioxin
PCB 110/115 NonDioxin
PCB 111 NonDioxin
PCB 112 NonDioxin
PCB 120 NonDioxin
PCB 121 NonDioxin
PCB 122 NonDioxin
PCB 127 NonDioxin
PCB 128/166 NonDioxin
PCB 129/138/160/163 NonDioxin
PCB 130 NonDioxin
PCB 131 NonDioxin
PCB 132 NonDioxin
PCB 133 NonDioxin
PCB 134/143 NonDioxin
PCB 135/151/154 NonDioxin
PCB 136 NonDioxin
PCB 137 NonDioxin
PCB 139/140 NonDioxin
PCB 141 NonDioxin
PCB 142 NonDioxin
PCB 144 NonDioxin
PCB 145 NonDioxin
PCB 146 NonDioxin
PCB 147/149 NonDioxin
PCB 148 NonDioxin
PCB 150 NonDioxin
PCB 152 NonDioxin
PCB 153/168 NonDioxin
PCB 155 NonDioxin
PCB 158 NonDioxin
PCB 159 NonDioxin
PCB 161 NonDioxin
PCB 162 NonDioxin
PCB 164 NonDioxin
PCB 165 NonDioxin
TEQ
GC-TI-OUTER-BC-ED-3
GC-TI-OUTER-BC
Blue CrabEdible Tissue
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 170 NonDioxin
PCB 171/173 NonDioxin
PCB 172 NonDioxin
PCB 174 NonDioxin
PCB 175 NonDioxin
PCB 176 NonDioxin
PCB 177 NonDioxin
PCB 178 NonDioxin
PCB 179 NonDioxin
PCB 180/193 NonDioxin
PCB 181 NonDioxin
PCB 182 NonDioxin
PCB 183/185 NonDioxin
PCB 184 NonDioxin
PCB 186 NonDioxin
PCB 187 NonDioxin
PCB 188 NonDioxin
PCB 190 NonDioxin
PCB 191 NonDioxin
PCB 192 NonDioxin
PCB 194 NonDioxin
PCB 195 NonDioxin
PCB 196 NonDioxin
PCB 197/200 NonDioxin
PCB 198/199 NonDioxin
PCB 201 NonDioxin
PCB 202 NonDioxin
PCB 203 NonDioxin
PCB 204 NonDioxin
PCB 205 NonDioxin
PCB 206 NonDioxin
PCB 207 NonDioxin
PCB 208 NonDioxin
PCB 209 NonDioxin
PCB Nondioxin
Total PCB Congeners
TEQ
GC-TI-OUTER-BC-ED-3
GC-TI-OUTER-BC
Blue CrabEdible Tissue
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 77 Dioxin 0.0001
PCB 81 Dioxin 0.0003
PCB 105 Dioxin 0.00003
PCB 114 Dioxin 0.00003
PCB 118 Dioxin 0.00003
PCB 123 Dioxin 0.00003
PCB 126 Dioxin 0.1
PCB 156/157 Dioxin 0.00003
PCB 167 Dioxin 0.00003
PCB 169 Dioxin 0.03
PCB 189 Dioxin 0.00003
PCB Dioxin
PCB 1 NonDioxin
PCB 2 NonDioxin
PCB 3 NonDioxin
PCB 4 NonDioxin
PCB 5 NonDioxin
PCB 6 NonDioxin
PCB 7 NonDioxin
PCB 8 NonDioxin
PCB 9 NonDioxin
PCB 10 NonDioxin
PCB 11 NonDioxin
PCB 12/13 NonDioxin
PCB 14 NonDioxin
PCB 15 NonDioxin
PCB 16 NonDioxin
PCB 17 NonDioxin
PCB 18/30 NonDioxin
PCB 19 NonDioxin
PCB 20/28 NonDioxin
PCB 21/33 NonDioxin
PCB 22 NonDioxin
PCB 23 NonDioxin
PCB 24 NonDioxin
PCB 25 NonDioxin
PCB 26/29 NonDioxin
PCB 27 NonDioxin
PCB 31 NonDioxin
PCB 32 NonDioxin
PCB 34 NonDioxin
PCB 35 NonDioxin
Conc TEQ Conc TEQ Conc TEQ
216 0.0216 180 0.018 243 0.0243
13.1 0.00393 3.56 R 0.001068 14.3 0.00429
1,780 0.0534 1,470 0.0441 2,010 0.0603
126 0.00378 101 0.00303 149 0.00447
5,820 0.1746 4,610 0.1383 6,620 0.1986
126 0.00378 97.2 0.002916 138 0.00414
15.8 1.58 12.4 1.24 8.98 R 0.898
851 0.02553 725 0.02175 959 0.02877
425 0.01275 354 0.01062 483 0.01449
0 U 0 0 U 0 0 U 0
61 0.00183 53.4 0.001602 65.6 0.001968
1.88 1.48 0.341
0 U 0 U 0 U
0 U 0 U 0 U
0 U 0 U 0 U
6.5 8.26 8.63
0 U 0 U 0 U
2.25 3.47 2.18
0 U 0 U 0 U
14.7 17.6 15.1
0 U 0 U 0 U
0 U 0 U 0 U
60.8 62.1 64.6
7.68 8.26 7.93
0 U 0 U 0 U
192 188 217
5.15 5.43 5.9
25.9 29.3 27.2
33.4 29.8 37.1
0 U 2.64 2.72
2,780 2,480 3,140
29.7 28.6 33
49.7 55.4 46.2
0 U 0 U 0 U
0 U 0 U 0 U
32.4 33.2 30.6
47.6 44 50.4
9.67 7.71 10.5
174 206 174
37.1 43.4 42.6
2.48 1.21 2.39
3.55 3.68 3.72
GC-TI-OUTER-BC-WB-3GC-TI-OUTER-BC-WB-1GC-TI-OUTER-BC-WB-2
GC-TI-OUTER-BCGC-TI-OUTER-BC GC-TI-OUTER-BC
Blue Crab Blue Crab Blue CrabWhole BodyWhole Body Whole Body
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 36 NonDioxin
PCB 37 NonDioxin
PCB 38 NonDioxin
PCB 39 NonDioxin
PCB 40/41/71 NonDioxin
PCB 42 NonDioxin
PCB 43 NonDioxin
PCB 44/47/65 NonDioxin
PCB 45/51 NonDioxin
PCB 46 NonDioxin
PCB 48 NonDioxin
PCB 49/69 NonDioxin
PCB 50/53 NonDioxin
PCB 52 NonDioxin
PCB 54 NonDioxin
PCB 55 NonDioxin
PCB 56 NonDioxin
PCB 57 NonDioxin
PCB 58 NonDioxin
PCB 59/62/75 NonDioxin
PCB 60 NonDioxin
PCB 61/70/74/76 NonDioxin
PCB 63 NonDioxin
PCB 64 NonDioxin
PCB 66 NonDioxin
PCB 67 NonDioxin
PCB 68 NonDioxin
PCB 72 NonDioxin
PCB 73 NonDioxin
PCB 78 NonDioxin
PCB 79 NonDioxin
PCB 80 NonDioxin
PCB 82 NonDioxin
PCB 83/99 NonDioxin
PCB 84 NonDioxin
PCB 85/116/117 NonDioxin
PCB 86/87/97/109/119/125 NonDioxin
PCB 88/91 NonDioxin
PCB 89 NonDioxin
PCB 90/101/113 NonDioxin
PCB 92 NonDioxin
PCB 93/95/98/100/102 NonDioxin
Conc TEQ Conc TEQ Conc TEQ
GC-TI-OUTER-BC-WB-3GC-TI-OUTER-BC-WB-1GC-TI-OUTER-BC-WB-2
GC-TI-OUTER-BCGC-TI-OUTER-BC GC-TI-OUTER-BC
Blue Crab Blue Crab Blue CrabWhole BodyWhole Body Whole Body
3.78 4.66 4.44
285 245 316
0 U 0 U 0 U
5.88 5.92 5.42
264 224 270
68.8 87.1 69.4
8.88 R 8.65 12.3
3,010 2,750 4,170
12.5 13.9 13.1
0 U 2.43 1.71
24.4 25.8 25.9
176 232 186
14.8 15.1 16.4
154 167 174
0 U 0 U 0 U
0 U 0 U 0 U
126 142 124
6.16 5.48 5.96
3.79 R 0 R 3.78 R
216 192 280
587 493 612
2,370 1,970 2,720
65.4 68.6 60.6
122 155 123
3,350 2,760 4,000
12.7 0 R 14
39.6 37.4 40
24.1 21 24.7
5.36 4.08 5.04
0 U 0 U 0 U
17.6 17.8 20.6
0 U 0 U 0 U
16.6 21.2 19
5,530 5,130 6,700
21.1 26.1 23.1
910 852 1,100
590 588 700
64.9 84.6 65.2
0 U 0 U 0 U
522 666 541
119 108 123
306 282 349
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 94 NonDioxin
PCB 96 NonDioxin
PCB 103 NonDioxin
PCB 104 NonDioxin
PCB 106 NonDioxin
PCB 107 NonDioxin
PCB 108/124 NonDioxin
PCB 110/115 NonDioxin
PCB 111 NonDioxin
PCB 112 NonDioxin
PCB 120 NonDioxin
PCB 121 NonDioxin
PCB 122 NonDioxin
PCB 127 NonDioxin
PCB 128/166 NonDioxin
PCB 129/138/160/163 NonDioxin
PCB 130 NonDioxin
PCB 131 NonDioxin
PCB 132 NonDioxin
PCB 133 NonDioxin
PCB 134/143 NonDioxin
PCB 135/151/154 NonDioxin
PCB 136 NonDioxin
PCB 137 NonDioxin
PCB 139/140 NonDioxin
PCB 141 NonDioxin
PCB 142 NonDioxin
PCB 144 NonDioxin
PCB 145 NonDioxin
PCB 146 NonDioxin
PCB 147/149 NonDioxin
PCB 148 NonDioxin
PCB 150 NonDioxin
PCB 152 NonDioxin
PCB 153/168 NonDioxin
PCB 155 NonDioxin
PCB 158 NonDioxin
PCB 159 NonDioxin
PCB 161 NonDioxin
PCB 162 NonDioxin
PCB 164 NonDioxin
PCB 165 NonDioxin
Conc TEQ Conc TEQ Conc TEQ
GC-TI-OUTER-BC-WB-3GC-TI-OUTER-BC-WB-1GC-TI-OUTER-BC-WB-2
GC-TI-OUTER-BCGC-TI-OUTER-BC GC-TI-OUTER-BC
Blue Crab Blue Crab Blue CrabWhole BodyWhole Body Whole Body
9.7 7.24 9.16
0 U 0 U 0 U
5.55 7.68 5.68
0 U 0 U 0 U
0 U 0 U 0 U
381 329 428
25.2 28.2 25.9
534 624 557
36.3 21.7 40.8
0 U 0 U 0 U
102 81.1 117
9.07 7.68 10.8
8.55 10.6 9.36
10.6 10.2 15.2
1,130 1,070 1,290
8,280 7,620 9,050
141 149 139
3.26 4.25 3.29
44.5 65.5 45.9
385 236 458
6.1 11.9 6.98
603 576 636
9.7 14.3 10.2
344 303 399
154 139 181
32.4 41 38.3
0 U 0 U 0 U
18.2 18.8 17.7
0 U 0 U 0 U
2,160 1,890 2,520
580 688 560
46.5 40.7 59.5
0 U 2.01 0 U
0 U 0 U 0 U
11,500 9,990 13,200
22.4 21.6 29.8
669 528 732
2.48 3.79 2.4
0 U 0 U 0 U
52.7 37.7 56.5
29.4 39.3 32
25.3 16.1 31.4
TABLE 2.11 Supplement a
PCB Congener Concentrations (ng/kg) in Blue Crab– Wet Weight, and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 170 NonDioxin
PCB 171/173 NonDioxin
PCB 172 NonDioxin
PCB 174 NonDioxin
PCB 175 NonDioxin
PCB 176 NonDioxin
PCB 177 NonDioxin
PCB 178 NonDioxin
PCB 179 NonDioxin
PCB 180/193 NonDioxin
PCB 181 NonDioxin
PCB 182 NonDioxin
PCB 183/185 NonDioxin
PCB 184 NonDioxin
PCB 186 NonDioxin
PCB 187 NonDioxin
PCB 188 NonDioxin
PCB 190 NonDioxin
PCB 191 NonDioxin
PCB 192 NonDioxin
PCB 194 NonDioxin
PCB 195 NonDioxin
PCB 196 NonDioxin
PCB 197/200 NonDioxin
PCB 198/199 NonDioxin
PCB 201 NonDioxin
PCB 202 NonDioxin
PCB 203 NonDioxin
PCB 204 NonDioxin
PCB 205 NonDioxin
PCB 206 NonDioxin
PCB 207 NonDioxin
PCB 208 NonDioxin
PCB 209 NonDioxin
PCB Nondioxin
Total PCB Congeners
Conc TEQ Conc TEQ Conc TEQ
GC-TI-OUTER-BC-WB-3GC-TI-OUTER-BC-WB-1GC-TI-OUTER-BC-WB-2
GC-TI-OUTER-BCGC-TI-OUTER-BC GC-TI-OUTER-BC
Blue Crab Blue Crab Blue CrabWhole BodyWhole Body Whole Body
665 663 759
369 335 404
207 164 249
24.4 38 30.1
64.3 56.7 74.9
11.3 14 9.99
293 347 312
614 426 778
20.2 33.8 21.9
3,650 3,460 4,040
12.2 12.3 14.9
16.2 17.6 20.9
1,520 1,410 1,570
10.9 10.5 13.1
0 U 0 U 0 U
4,370 4,040 4,660
22.7 22.4 31.1
208 189 228
60.8 50.2 63.7
0 U 0 U 0 U
387 418 436
68.9 77.4 81.6
248 255 293
54.8 54.2 63.5
663 667 796
131 132 147
353 343 478
331 368 347
0 U 0 U 0 U
7.65 8.03 7.98
186 221 243
31.8 36.6 50.1
124 126 199
122 135 182
64,800 59,400 74,200
74,200 67,000 84,800
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
PCB 77 Dioxin 0.0001 464 0.0464 4,190 0.419 3,550 0.355 3,010 0.301 3,810 0.381 1,550 0.155 1,750 0.175
PCB 81 Dioxin 0.0003 0 U 0 93 0.0279 83.7 0.02511 81.3 0.02439 85.3 0.02559 49.8 R 0 50 R 0
PCB 105 Dioxin 0.00003 1,560 0.0468 6,680 0.2004 6,430 0.1929 7,050 0.2115 6,120 0.1836 35,200 1.056 34,100 1.023
PCB 114 Dioxin 0.00003 83.3 0.002499 409 0.01227 369 0.01107 392 0.01176 347 0.01041 1,580 0.0474 1,500 0.045
PCB 118 Dioxin 0.00003 3,990 0.1197 18,000 0.54 17,000 0.51 18,500 0.555 16,500 0.495 106,000 3.18 106,000 3.18
PCB 123 Dioxin 0.00003 67.6 0.002028 317 0.00951 288 0.00864 343 0.01029 304 0.00912 1,930 0.0579 1,810 0.0543
PCB 126 Dioxin 0.1 0 U 0 94.4 9.44 100 10 111 11.1 101 10.1 123 R 0 85.3 R 0
PCB 156/157 Dioxin 0.00003 564 0.01692 2,190 0.0657 2,290 0.0687 2,700 0.081 2,190 0.0657 15,900 0.477 15,100 0.453
PCB 167 Dioxin 0.00003 193 0.00579 749 0.02247 806 0.02418 1,010 0.0303 823 0.02469 6,550 0.1965 6,500 0.195
PCB 169 Dioxin 0.03 0 U 0 0 U 0 0 U 0 0 U 0 0 U 0 0 U 0 0 U 0
PCB 189 Dioxin 0.00003 44.2 0.001326 171 0.00513 192 0.00576 339 0.01017 225 0.00675 1,160 0.0348 1,110 0.0333
PCB Dioxin 0.241463 10.74238 11.20136 12.33541 11.30186 5.2046 5.1586
PCB 1 NonDioxin 285 4,860 J 4,530 J 3,840 J 3,300 161 184
PCB 2 NonDioxin 41.4 783 787 550 585 75.4 94
PCB 3 NonDioxin 153 2,350 J 2,310 2,140 1,920 330 402
PCB 4 NonDioxin 895 15,000 J 9,390 J 7,400 J 6,710 311 U 384 U
PCB 5 NonDioxin 0 U 140 78.5 79.8 44.2 0 U 0 U
PCB 6 NonDioxin 343 5,690 3,900 3,400 3,420 217 252
PCB 7 NonDioxin 37.7 522 281 269 218 0 U 38.4
PCB 8 NonDioxin 930 15,700 10,900 9,360 9,110 764 936
PCB 9 NonDioxin 34.6 716 402 374 320 39.7 46.5
PCB 10 NonDioxin 49.4 673 527 399 402 0 U 0 U
PCB 11 NonDioxin 433 3,890 3,940 3,150 3,360 414 U 446 U
PCB 12/13 NonDioxin 438 6,080 5,240 4,430 4,850 345 419
PCB 14 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 15 NonDioxin 2,490 29,900 26,700 22,800 27,800 2,490 2,900
PCB 16 NonDioxin 368 5,220 3,120 2,790 2,570 583 640
PCB 17 NonDioxin 1,010 13,700 8,540 7,190 7,370 1,080 1,160
PCB 18/30 NonDioxin 931 14,700 9,710 8,500 8,090 1,430 1,610
PCB 19 NonDioxin 344 4,150 J 2,040 1,660 1,340 623 671
PCB 20/28 NonDioxin 5,190 61,900 45,700 39,800 44,700 11,100 12,900
PCB 21/33 NonDioxin 769 11,300 6,650 6,090 5,560 1,570 1,870
PCB 22 NonDioxin 840 12,300 7,930 7,200 7,000 1,630 1,870
PCB 23 NonDioxin 0 U 45.7 22.7 18.7 0 U 0 U 0 U
PCB 24 NonDioxin 0 U 217 128 117 104 0 U 0 U
PCB 25 NonDioxin 748 7,110 6,310 5,200 5,560 2,920 2,970
PCB 26/29 NonDioxin 1,040 12,400 10,900 8,850 9,720 2,310 2,470
PCB 27 NonDioxin 261 2,600 1,910 1,590 1,700 895 930
6/23/20106/18/20106/17/20106/17/20106/17/20106/23/2010 6/23/2010
308A301 303 305 307A 307B 308A
GC-SD301-0.0-0.5 GC-SD303-0.0-0.5 GC-SD305-0.0-0.5 GC-SD307A-0.0-0.5 D-062310-01 (dup)GC-SD307B-0.0-0.5 GC-SD308A-0.0-0.5
Page 29
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/23/20106/18/20106/17/20106/17/20106/17/20106/23/2010 6/23/2010
308A301 303 305 307A 307B 308A
GC-SD301-0.0-0.5 GC-SD303-0.0-0.5 GC-SD305-0.0-0.5 GC-SD307A-0.0-0.5 D-062310-01 (dup)GC-SD307B-0.0-0.5 GC-SD308A-0.0-0.5
PCB 31 NonDioxin 3,450 44,400 35,200 29,900 31,600 4,640 5,420
PCB 32 NonDioxin 664 8,560 5,510 4,950 5,010 3,730 4,320
PCB 34 NonDioxin 31.7 437 312 245 278 0 U 0 U
PCB 35 NonDioxin 115 1,310 1,070 891 1,000 110 136
PCB 36 NonDioxin 0 U 80 92 65 74.9 0 U 0 U
PCB 37 NonDioxin 1,520 15,800 13,600 12,000 14,800 2,200 2,550
PCB 38 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 39 NonDioxin 27.8 333 256 221 240 57.7 R 76.4
PCB 40/41/71 NonDioxin 1,260 14,500 10,200 8,570 8,810 30,400 31,800
PCB 42 NonDioxin 601 6,960 5,090 4,180 4,280 14,200 15,000
PCB 43 NonDioxin 96.7 1,190 710 558 602 579 695
PCB 44/47/65 NonDioxin 2,670 25,700 18,800 18,800 16,600 68,800 76,000
PCB 45/51 NonDioxin 351 3,890 2,460 3,550 2,100 9,860 10,300
PCB 46 NonDioxin 88.8 1,090 702 617 555 4,570 4,360
PCB 48 NonDioxin 311 5,000 2,760 2,300 2,250 1,300 1,550
PCB 49/69 NonDioxin 1,960 20,400 15,900 14,100 14,400 57,300 64,600
PCB 50/53 NonDioxin 296 3,090 2,090 2,190 1,730 15,500 16,500
PCB 52 NonDioxin 2,630 22,900 17,200 15,200 14,700 109,000 129,000
PCB 54 NonDioxin 25.2 137 80.8 205 65.5 271 309
PCB 55 NonDioxin 35.2 480 335 297 291 0 U 0 U
PCB 56 NonDioxin 1,190 12,300 8,390 7,600 8,190 8,110 8,730
PCB 57 NonDioxin 26.5 299 226 180 194 95.3 97.3
PCB 58 NonDioxin 0 U 150 112 94.1 93.8 145 241
PCB 59/62/75 NonDioxin 219 2,540 1,800 1,500 1,540 2,560 2,960
PCB 60 NonDioxin 542 4,730 3,400 3,200 3,480 2,100 2,380
PCB 61/70/74/76 NonDioxin 4,770 45,800 32,300 27,600 30,900 64,700 71,500
PCB 63 NonDioxin 158 1,610 1,160 942 1,080 813 827
PCB 64 NonDioxin 913 9,990 7,120 6,040 6,180 12,700 14,000
PCB 66 NonDioxin 2,810 28,100 20,000 17,100 19,500 44,000 48,200
PCB 67 NonDioxin 93.9 1,240 833 699 750 577 624
PCB 68 NonDioxin 43.7 445 383 341 358 889 999
PCB 72 NonDioxin 51.6 587 497 379 427 715 771
PCB 73 NonDioxin 0 U 104 81.2 104 75.3 0 U 0 U
PCB 78 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 79 NonDioxin 41.5 235 185 177 202 1,800 1,720
PCB 80 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 82 NonDioxin 370 1,980 1,830 1,930 1,550 15,700 14,400
PCB 83/99 NonDioxin 2,020 12,400 10,400 12,100 10,200 95,000 115,000
PCB 84 NonDioxin 706 4,020 3,340 3,350 2,610 58,300 54,500
Page 30
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/23/20106/18/20106/17/20106/17/20106/17/20106/23/2010 6/23/2010
308A301 303 305 307A 307B 308A
GC-SD301-0.0-0.5 GC-SD303-0.0-0.5 GC-SD305-0.0-0.5 GC-SD307A-0.0-0.5 D-062310-01 (dup)GC-SD307B-0.0-0.5 GC-SD308A-0.0-0.5
PCB 85/116/117 NonDioxin 596 3,170 3,100 3,160 2,670 26,000 24,400
PCB 86/87/97/109/119/125 NonDioxin 2,190 11,000 10,700 11,500 9,250 102,000 111,000
PCB 88/91 NonDioxin 474 3,300 2,810 3,260 2,440 37,100 38,400
PCB 89 NonDioxin 27.8 239 152 157 129 1,170 1,140
PCB 90/101/113 NonDioxin 3,310 18,900 16,200 19,700 16,100 155,000 163,000
PCB 92 NonDioxin 582 3,460 2,850 3,310 2,680 35,200 36,000
PCB 93/95/98/100/102 NonDioxin 2,270 12,700 11,100 12,800 8,740 178,000 177,000
PCB 94 NonDioxin 27.5 207 154 283 133 1,690 1,640
PCB 96 NonDioxin 19.5 146 107 160 92.5 1,540 1,430
PCB 103 NonDioxin 35.9 292 268 459 248 1,840 1,870
PCB 104 NonDioxin 0 U 21.9 0 U 78.1 0 U 64.6 67.6
PCB 106 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 107 NonDioxin 277 1,360 1,280 1,280 1,160 8,080 7,840
PCB 108/124 NonDioxin 137 579 550 614 538 4,710 4,640
PCB 110/115 NonDioxin 3,860 18,600 19,200 20,500 17,200 223,000 228,000
PCB 111 NonDioxin 0 U 20.1 21.6 22 19.9 0 U 0 U
PCB 112 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 120 NonDioxin 0 U 99 104 95.6 103 150 143
PCB 121 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 122 NonDioxin 44.6 222 208 218 187 1,380 1,460
PCB 127 NonDioxin 0 U 20 24.9 33.1 0 U 236 224
PCB 128/166 NonDioxin 775 2,870 3,060 3,760 2,950 35,700 32,400
PCB 129/138/160/163 NonDioxin 4,760 18,100 19,800 26,000 19,900 199,000 236,000
PCB 130 NonDioxin 284 1,110 1,180 1,420 1,220 12,700 11,800
PCB 131 NonDioxin 57.9 204 215 258 223 2,960 2,650
PCB 132 NonDioxin 1,540 5,170 5,420 7,540 6,100 87,500 82,300
PCB 133 NonDioxin 67 332 340 430 398 2,530 2,430
PCB 134/143 NonDioxin 217 843 872 1,140 912 13,400 12,000
PCB 135/151/154 NonDioxin 1,110 5,060 5,970 8,660 6,660 65,100 62,400
PCB 136 NonDioxin 388 1,800 1,660 2,680 1,870 29,800 27,400
PCB 137 NonDioxin 245 867 786 953 833 12,000 12,000
PCB 139/140 NonDioxin 74.1 311 319 389 328 3,820 3,660
PCB 141 NonDioxin 781 2,610 2,970 4,680 3,180 34,300 32,500
PCB 142 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 144 NonDioxin 159 654 803 1,140 913 8,930 8,220
PCB 145 NonDioxin 0 U 0 U 0 U 0 U 0 U 93.5 93.2
PCB 146 NonDioxin 651 2,780 2,930 3,860 3,380 26,500 26,600
PCB 147/149 NonDioxin 3,470 12,800 15,100 22,300 16,900 190,000 183,000
PCB 148 NonDioxin 0 U 60.3 66 97.5 71.8 242 247
Page 31
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/23/20106/18/20106/17/20106/17/20106/17/20106/23/2010 6/23/2010
308A301 303 305 307A 307B 308A
GC-SD301-0.0-0.5 GC-SD303-0.0-0.5 GC-SD305-0.0-0.5 GC-SD307A-0.0-0.5 D-062310-01 (dup)GC-SD307B-0.0-0.5 GC-SD308A-0.0-0.5
PCB 150 NonDioxin 0 U 70.5 71.4 159 99.1 518 497
PCB 152 NonDioxin 0 U 26.6 21.4 65.7 31.1 320 331
PCB 153/168 NonDioxin 3,790 16,000 17,700 24,300 19,000 155,000 159,000
PCB 155 NonDioxin 0 U 19.6 21 30.8 20.7 0 U 0 U
PCB 158 NonDioxin 441 1,660 1,760 2,490 1,690 20,700 19,500
PCB 159 NonDioxin 36.1 121 142 280 166 1,400 1,370
PCB 161 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 162 NonDioxin 0 U 62.2 69.5 76.8 71.3 488 R 408
PCB 164 NonDioxin 274 1,050 1,160 1,680 1,260 14,300 13,100
PCB 165 NonDioxin 0 U 19.3 0 U 22.2 20.8 0 U 0 U
PCB 170 NonDioxin 902 3,380 4,210 6,940 5,160 28,600 25,900
PCB 171/173 NonDioxin 308 1,200 1,520 2,320 1,880 10,200 8,880
PCB 172 NonDioxin 176 679 820 1,320 992 4,990 4,810
PCB 174 NonDioxin 941 3,210 4,090 7,340 5,420 34,300 30,100
PCB 175 NonDioxin 46.6 179 235 370 320 1,350 1,270
PCB 176 NonDioxin 123 500 624 953 846 4,540 4,070
PCB 177 NonDioxin 627 2,390 2,960 4,350 3,800 15,900 15,000
PCB 178 NonDioxin 219 987 1,220 1,790 1,560 6,390 5,850
PCB 179 NonDioxin 386 1,670 2,070 3,020 2,590 14,100 13,100
PCB 180/193 NonDioxin 2,170 8,240 10,300 17,500 13,300 66,200 R 62,900
PCB 181 NonDioxin 0 U 40.6 43 64.7 61.1 403 376
PCB 182 NonDioxin 0 U 38.1 40.4 0 U 46.8 163 175
PCB 183/185 NonDioxin 755 2,860 3,670 5,560 4,700 24,400 22,100
PCB 184 NonDioxin 0 U 0 U 19.1 0 U 30.1 0 U 0 U
PCB 186 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 187 NonDioxin 1,400 5,920 7,510 10,700 9,800 42,300 40,500
PCB 188 NonDioxin 0 U 26.1 32.8 51.6 32.1 103 95.2
PCB 190 NonDioxin 194 803 989 1,600 1,160 5,150 4,990
PCB 191 NonDioxin 42.1 155 192 330 255 1,220 1,120
PCB 192 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
PCB 194 NonDioxin 551 2,140 2,560 4,240 2,510 12,400 12,700
PCB 195 NonDioxin 214 771 835 1,670 908 4,710 4,830
PCB 196 NonDioxin 313 1,140 1,490 2,530 1,970 7,560 7,390
PCB 197/200 NonDioxin 97.9 403 448 779 659 2,920 2,720
PCB 198/199 NonDioxin 650 3,100 3,920 5,970 5,080 18,800 19,000
PCB 201 NonDioxin 89.4 384 499 671 720 2,530 2,450
PCB 202 NonDioxin 187 852 1,070 1,230 1,090 3,990 3,840
PCB 203 NonDioxin 467 1,810 2,250 3,740 3,290 11,800 12,800
PCB 204 NonDioxin 0 U 0 U 0 U 0 U 0 U 0 U 0 U
Page 32
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/23/20106/18/20106/17/20106/17/20106/17/20106/23/2010 6/23/2010
308A301 303 305 307A 307B 308A
GC-SD301-0.0-0.5 GC-SD303-0.0-0.5 GC-SD305-0.0-0.5 GC-SD307A-0.0-0.5 D-062310-01 (dup)GC-SD307B-0.0-0.5 GC-SD308A-0.0-0.5
PCB 205 NonDioxin 30.1 110 135 228 153 673 687
PCB 206 NonDioxin 397 2,120 2,360 3,190 2,600 11,300 11,700
PCB 207 NonDioxin 51 252 299 389 309 1,430 1,520
PCB 208 NonDioxin 153 857 1,090 1,200 1,160 3,430 3,510
PCB 209 NonDioxin 303 1,780 2,290 2,000 2,450 8,290 8,230
PCB Nondioxin 92,484 731,667 607,428 633,461 587,210 2,637,144 2,792,703
Total PCB Congeners 99,450 764,560 638,537 666,997 617,715 2,807,014 2,960,573
Page 33
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 77 Dioxin 0.0001
PCB 81 Dioxin 0.0003
PCB 105 Dioxin 0.00003
PCB 114 Dioxin 0.00003
PCB 118 Dioxin 0.00003
PCB 123 Dioxin 0.00003
PCB 126 Dioxin 0.1
PCB 156/157 Dioxin 0.00003
PCB 167 Dioxin 0.00003
PCB 169 Dioxin 0.03
PCB 189 Dioxin 0.00003
PCB Dioxin
PCB 1 NonDioxin
PCB 2 NonDioxin
PCB 3 NonDioxin
PCB 4 NonDioxin
PCB 5 NonDioxin
PCB 6 NonDioxin
PCB 7 NonDioxin
PCB 8 NonDioxin
PCB 9 NonDioxin
PCB 10 NonDioxin
PCB 11 NonDioxin
PCB 12/13 NonDioxin
PCB 14 NonDioxin
PCB 15 NonDioxin
PCB 16 NonDioxin
PCB 17 NonDioxin
PCB 18/30 NonDioxin
PCB 19 NonDioxin
PCB 20/28 NonDioxin
PCB 21/33 NonDioxin
PCB 22 NonDioxin
PCB 23 NonDioxin
PCB 24 NonDioxin
PCB 25 NonDioxin
PCB 26/29 NonDioxin
PCB 27 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
2,120 0.212 4,200 0.42 5,960 0.596 3,220 0.322 9,260 0.926 16,200 1.62 14,800 1.48
50.7 0.01521 94.9 0.02847 156 0.0468 92.1 0.02763 0 U 0 757 0.2271 756 0.2268
5,020 0.1506 8,060 0.2418 15,800 0.474 8,430 0.2529 41,700 1.251 72,200 2.166 65,200 1.956
249 0.00747 454 0.01362 939 0.02817 492 0.01476 2,890 0.0867 4,940 0.1482 4,460 0.1338
14,200 0.426 22,100 0.663 42,300 1.269 23,300 0.699 125,000 3.75 206,000 R 0 119,000 3.57
252 0.00756 408 0.01224 720 0.0216 342 0.01026 2,740 0.0822 3,400 0.102 3,100 0.093
60.8 6.08 115 11.5 151 15.1 69.2 6.92 0 U 0 971 97.1 965 96.5
2,200 0.066 3,170 0.0951 8,220 0.2466 4,380 0.1314 37,500 1.125 61,000 1.83 61,000 1.83
867 0.02601 1,190 0.0357 3,500 0.105 2,070 0.0621 18,800 0.564 24,200 0.726 26,100 0.783
0 U 0 0 U 0 0 U 0 0 U 0 0 U 0 0 U 0 0 U 0
248 0.00744 306 0.00918 1,300 0.039 704 0.02112 8,180 0.2454 14,400 0.432 14,100 0.423
6.99829 13.01911 17.92617 8.46117 8.0303 104.3513 106.9956
1,280 2,440 1,480 1,030 9,480 7,540 J 7,950 J
168 286 278 184 1,560 668 790
668 1,360 1,010 649 5,680 5,770 5,880 J
3,690 6,410 6,800 4,250 63,300 53,200 J 55,700 J
0 U 88.6 147 81.5 2,200 2,050 1,760
1,630 3,320 4,920 2,370 42,700 24,800 25,700
97.1 264 371 202 4,840 4,380 4,400
4,380 9,240 12,600 6,760 104,000 111,000 116,000
151 379 533 303 7,500 7,050 6,930
262 529 375 267 2,350 1,620 1,430
1,930 2,830 3,670 2,350 5,280 9,980 10,100
2,050 3,760 5,700 2,510 14,700 10,600 11,400
0 U 0 U 0 U 0 U 0 U 38.8 45.9
12,900 23,800 22,700 13,200 58,200 65,200 68,000
1,370 3,420 8,900 4,240 55,200 75,500 63,300
3,640 7,460 17,000 8,650 69,500 86,400 82,000
4,290 9,890 23,300 11,000 135,000 175,000 158,000
740 1,920 2,900 1,390 24,000 21,500 21,500 J
20,700 41,600 76,200 35,400 208,000 295,000 R 258,000
2,750 6,950 16,600 7,880 92,400 143,000 119,000
3,550 7,960 19,200 8,540 70,000 101,000 94,300
0 U 0 U 42.7 0 U 0 U 379 368
52.2 148 271 159 1,900 2,100 2,090
2,770 5,190 10,400 3,890 24,600 25,400 25,500
4,690 9,360 14,100 7,120 45,700 55,700 54,500
959 1,720 3,450 1,690 11,500 13,100 12,100
6/18/20106/24/2010 6/18/20106/18/2010 6/18/20106/23/20106/24/2010
308B 309 314310 312 313 314
GC-SD308B-0.0-0.5 GC-SD309-0.0-0.5 GC-SD310-0.0-0.5 GC-SD312-0.0-0.5 D-06182010-01 (dup)GC-SD313-0.0-0.5 GC-SD314-0.0-0.5
Page 34
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 31 NonDioxin
PCB 32 NonDioxin
PCB 34 NonDioxin
PCB 35 NonDioxin
PCB 36 NonDioxin
PCB 37 NonDioxin
PCB 38 NonDioxin
PCB 39 NonDioxin
PCB 40/41/71 NonDioxin
PCB 42 NonDioxin
PCB 43 NonDioxin
PCB 44/47/65 NonDioxin
PCB 45/51 NonDioxin
PCB 46 NonDioxin
PCB 48 NonDioxin
PCB 49/69 NonDioxin
PCB 50/53 NonDioxin
PCB 52 NonDioxin
PCB 54 NonDioxin
PCB 55 NonDioxin
PCB 56 NonDioxin
PCB 57 NonDioxin
PCB 58 NonDioxin
PCB 59/62/75 NonDioxin
PCB 60 NonDioxin
PCB 61/70/74/76 NonDioxin
PCB 63 NonDioxin
PCB 64 NonDioxin
PCB 66 NonDioxin
PCB 67 NonDioxin
PCB 68 NonDioxin
PCB 72 NonDioxin
PCB 73 NonDioxin
PCB 78 NonDioxin
PCB 79 NonDioxin
PCB 80 NonDioxin
PCB 82 NonDioxin
PCB 83/99 NonDioxin
PCB 84 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/18/20106/24/2010 6/18/20106/18/2010 6/18/20106/23/20106/24/2010
308B 309 314310 312 313 314
GC-SD308B-0.0-0.5 GC-SD309-0.0-0.5 GC-SD310-0.0-0.5 GC-SD312-0.0-0.5 D-06182010-01 (dup)GC-SD313-0.0-0.5 GC-SD314-0.0-0.5
15,100 30,100 59,600 27,000 176,000 263,000 R 221,000
2,560 4,710 R 10,600 4,910 36,300 58,700 54,000
127 254 374 182 1,010 1,200 1,230
537 951 1,460 788 2,660 4,120 4,020
0 U 57.8 0 U 0 U 0 U 275 179
7,270 14,500 18,800 10,200 50,000 72,700 67,900
0 U 0 U 0 U 0 U 0 U 147 194
128 226 457 214 934 1,260 1,330
5,960 10,500 24,300 10,400 70,200 103,000 96,900
2,890 5,220 11,800 5,350 35,300 52,100 50,400
386 683 1,780 758 5,940 9,470 8,860
11,100 19,300 48,300 20,300 138,000 193,000 R 128,000
1,460 2,810 8,270 3,710 33,100 37,700 33,600
444 845 2,220 942 10,700 12,100 10,300
1,290 2,830 8,710 3,530 28,200 47,900 44,900
9,710 15,000 39,400 16,900 92,700 128,000 87,800
1,530 2,350 6,650 2,880 23,600 30,200 27,100
11,100 17,900 50,200 21,000 143,000 226,000 R 155,000
0 U 72.8 186 108 1,070 619 625
165 279 811 221 1,870 3,550 3,330
4,910 9,460 19,500 9,870 42,400 71,700 69,600
103 209 290 134 661 1,130 1,150
66.5 107 133 75 0 U 457 624
997 1,940 3,950 1,760 12,700 18,100 17,500
2,060 4,080 9,700 4,860 24,800 45,400 45,300
18,800 32,900 82,900 36,200 170,000 299,000 R 214,000
637 1,130 2,290 1,100 4,800 7,760 7,700
3,960 7,320 20,600 8,710 50,500 80,200 76,800
12,800 21,400 43,200 21,000 90,100 151,000 R 110,000
421 836 2,210 811 4,390 6,420 6,610
244 354 530 293 662 654 787
273 441 621 321 908 1,120 1,240
0 U 0 U 0 U 0 U 0 U 370 436
0 U 0 U 0 U 0 U 0 U 0 U 0 U
185 255 630 270 964 1,560 1,980
0 U 0 U 0 U 0 U 0 U 0 U 0 U
1,390 2,000 4,700 2,600 11,100 20,000 17,200
9,820 13,100 41,900 29,600 188,000 149,000 R 152,000
3,350 4,110 9,510 5,270 29,800 44,700 39,400
Page 35
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 85/116/117 NonDioxin
PCB 86/87/97/109/119/125 NonDioxin
PCB 88/91 NonDioxin
PCB 89 NonDioxin
PCB 90/101/113 NonDioxin
PCB 92 NonDioxin
PCB 93/95/98/100/102 NonDioxin
PCB 94 NonDioxin
PCB 96 NonDioxin
PCB 103 NonDioxin
PCB 104 NonDioxin
PCB 106 NonDioxin
PCB 107 NonDioxin
PCB 108/124 NonDioxin
PCB 110/115 NonDioxin
PCB 111 NonDioxin
PCB 112 NonDioxin
PCB 120 NonDioxin
PCB 121 NonDioxin
PCB 122 NonDioxin
PCB 127 NonDioxin
PCB 128/166 NonDioxin
PCB 129/138/160/163 NonDioxin
PCB 130 NonDioxin
PCB 131 NonDioxin
PCB 132 NonDioxin
PCB 133 NonDioxin
PCB 134/143 NonDioxin
PCB 135/151/154 NonDioxin
PCB 136 NonDioxin
PCB 137 NonDioxin
PCB 139/140 NonDioxin
PCB 141 NonDioxin
PCB 142 NonDioxin
PCB 144 NonDioxin
PCB 145 NonDioxin
PCB 146 NonDioxin
PCB 147/149 NonDioxin
PCB 148 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/18/20106/24/2010 6/18/20106/18/2010 6/18/20106/23/20106/24/2010
308B 309 314310 312 313 314
GC-SD308B-0.0-0.5 GC-SD309-0.0-0.5 GC-SD310-0.0-0.5 GC-SD312-0.0-0.5 D-06182010-01 (dup)GC-SD313-0.0-0.5 GC-SD314-0.0-0.5
2,450 3,450 7,860 4,120 17,900 31,700 28,700
8,760 12,000 34,100 17,700 89,700 144,000 R 91,900
2,840 3,350 11,700 8,110 59,400 53,700 56,000
110 177 455 250 1,520 2,320 2,100
14,500 19,900 76,300 41,400 273,000 365,000 R 321,000
2,780 3,400 9,050 4,960 31,400 50,600 54,100
12,200 14,200 46,500 25,400 210,000 300,000 R 217,000
130 179 459 271 1,190 R 1,140 1,080
100 136 395 232 1,770 1,770 1,540
252 372 1,480 1,310 11,600 8,630 9,610
0 U 0 U 63.5 40.7 0 U 59.4 64.2
0 U 0 U 0 U 0 U 0 U 0 U 0 U
1,110 1,380 3,310 1,910 5,880 11,600 10,900
459 649 1,760 927 3,940 7,540 7,140
18,100 21,900 66,000 32,800 164,000 262,000 R 177,000
0 U 0 U 0 U 0 U 0 U 38.4 33.7
0 U 0 U 0 U 0 U 0 U 0 U 0 U
56.4 121 234 214 1,200 829 1,010
0 U 0 U 0 U 0 U 0 U 0 U 0 U
170 214 573 289 1,340 2,260 2,010
0 U 0 U 0 U 0 U 0 U 244 410
3,370 3,930 10,500 5,940 39,100 64,200 63,400
23,500 25,000 128,000 60,700 441,000 681,000 R 605,000
1,290 1,450 4,940 2,430 13,400 23,800 25,000
259 256 920 513 3,890 6,120 6,330
7,040 7,450 34,400 16,000 119,000 211,000 153,000
366 408 1,430 814 5,590 9,280 9,500
1,110 1,160 4,650 2,470 21,500 32,300 35,100
6,860 8,010 45,600 26,300 230,000 391,000 R 298,000
2,280 2,600 14,100 8,010 66,500 81,800 120,000
992 876 2,580 1,680 9,010 13,500 15,900
369 373 1,400 913 7,150 9,100 11,000
3,670 3,980 26,900 11,600 109,000 204,000 155,000
0 U 0 U 0 U 0 U 0 U 0 U 0 U
947 1,060 5,820 2,820 25,500 57,600 60,900
0 U 0 U 0 U 0 U 0 U 56.8 56.7
3,250 3,600 19,000 10,300 72,800 115,000 129,000
19,000 19,900 132,000 69,800 551,000 742,000 R 681,000
50.1 69.1 321 355 2,470 2,220 2,510
Page 36
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 150 NonDioxin
PCB 152 NonDioxin
PCB 153/168 NonDioxin
PCB 155 NonDioxin
PCB 158 NonDioxin
PCB 159 NonDioxin
PCB 161 NonDioxin
PCB 162 NonDioxin
PCB 164 NonDioxin
PCB 165 NonDioxin
PCB 170 NonDioxin
PCB 171/173 NonDioxin
PCB 172 NonDioxin
PCB 174 NonDioxin
PCB 175 NonDioxin
PCB 176 NonDioxin
PCB 177 NonDioxin
PCB 178 NonDioxin
PCB 179 NonDioxin
PCB 180/193 NonDioxin
PCB 181 NonDioxin
PCB 182 NonDioxin
PCB 183/185 NonDioxin
PCB 184 NonDioxin
PCB 186 NonDioxin
PCB 187 NonDioxin
PCB 188 NonDioxin
PCB 190 NonDioxin
PCB 191 NonDioxin
PCB 192 NonDioxin
PCB 194 NonDioxin
PCB 195 NonDioxin
PCB 196 NonDioxin
PCB 197/200 NonDioxin
PCB 198/199 NonDioxin
PCB 201 NonDioxin
PCB 202 NonDioxin
PCB 203 NonDioxin
PCB 204 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/18/20106/24/2010 6/18/20106/18/2010 6/18/20106/23/20106/24/2010
308B 309 314310 312 313 314
GC-SD308B-0.0-0.5 GC-SD309-0.0-0.5 GC-SD310-0.0-0.5 GC-SD312-0.0-0.5 D-06182010-01 (dup)GC-SD313-0.0-0.5 GC-SD314-0.0-0.5
76.2 131 964 1,060 7,960 5,860 8,690
0 U 0 U 132 82.6 0 U 177 224
20,500 23,400 148,000 82,000 631,000 857,000 R 841,000
0 U 0 U 89.5 104 868 516 519
2,090 2,330 9,740 5,160 43,000 73,200 77,700
174 270 1,820 682 6,940 11,100 10,100
0 U 0 U 0 U 0 U 0 U 0 U 0 U
75.4 72.8 167 103 654 1,040 1,180
1,470 1,690 7,720 4,010 38,400 59,400 62,100
0 U 0 U 0 U 0 U 0 U 39 53.2
5,200 7,710 32,000 16,000 188,000 295,000 R 189,000
1,800 2,470 10,900 5,330 56,800 102,000 61,400
1,000 1,340 5,740 3,020 32,600 57,900 58,800
5,110 6,710 40,500 17,900 183,000 300,000 R 202,000
265 377 1,490 789 8,260 15,600 16,500
735 979 5,100 2,450 23,600 45,600 47,700
3,490 4,810 17,800 8,870 99,800 180,000 R 107,000
1,330 1,870 7,710 4,570 42,900 70,100 74,100
2,380 3,220 17,600 9,220 87,700 147,000 R 89,500
12,600 16,700 93,400 43,100 446,000 657,000 R 492,000
55 65.9 237 162 1,520 2,390 2,680
42.4 0 U 98.9 0 U 0 U 783 857
4,460 5,850 28,800 14,500 147,000 269,000 R 169,000
0 U 0 U 40.9 0 U 0 U 115 139
0 U 0 U 0 U 0 U 0 U 0 U 0 U
8,460 11,800 60,500 34,500 266,000 415,000 R 284,000
0 U 54.7 240 309 2,510 1,860 1,930
1,130 1,610 6,120 3,450 40,900 71,200 69,200
234 328 1,530 797 8,780 15,400 14,900
0 U 0 U 0 U 0 U 0 U 0 U 0 U
3,240 3,800 16,700 10,700 93,600 147,000 R 101,000
1,220 1,410 6,510 3,760 35,200 46,900 R 58,200
1,650 2,170 8,970 5,320 45,600 78,700 67,300
542 751 3,280 1,800 13,900 25,000 25,100
4,230 5,190 20,100 12,800 79,200 131,000 130,000
548 754 2,810 1,700 10,100 18,400 18,100
1,140 1,540 4,020 3,120 17,000 23,600 23,400
2,740 3,460 12,700 8,820 57,800 102,000 91,400
0 U 0 U 0 U 0 U 0 U 38.9 34.1
Page 37
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 205 NonDioxin
PCB 206 NonDioxin
PCB 207 NonDioxin
PCB 208 NonDioxin
PCB 209 NonDioxin
PCB Nondioxin
Total PCB Congeners
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/18/20106/24/2010 6/18/20106/18/2010 6/18/20106/23/20106/24/2010
308B 309 314310 312 313 314
GC-SD308B-0.0-0.5 GC-SD309-0.0-0.5 GC-SD310-0.0-0.5 GC-SD312-0.0-0.5 D-06182010-01 (dup)GC-SD313-0.0-0.5 GC-SD314-0.0-0.5
152 218 857 561 5,530 8,670 8,350
2,970 3,220 8,040 6,810 20,600 30,800 30,200
385 357 1,090 835 2,760 4,980 4,910
1,090 1,220 2,900 2,050 4,620 6,110 6,360
2,570 2,630 4,560 2,440 4,910 4,830 4,880
440,015 655,904 2,073,307 1,055,846 7,886,531 3,836,404 9,769,540
465,283 696,002 2,152,353 1,098,945 8,132,601 4,034,472 10,079,021
Page 38
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 77 Dioxin 0.0001
PCB 81 Dioxin 0.0003
PCB 105 Dioxin 0.00003
PCB 114 Dioxin 0.00003
PCB 118 Dioxin 0.00003
PCB 123 Dioxin 0.00003
PCB 126 Dioxin 0.1
PCB 156/157 Dioxin 0.00003
PCB 167 Dioxin 0.00003
PCB 169 Dioxin 0.03
PCB 189 Dioxin 0.00003
PCB Dioxin
PCB 1 NonDioxin
PCB 2 NonDioxin
PCB 3 NonDioxin
PCB 4 NonDioxin
PCB 5 NonDioxin
PCB 6 NonDioxin
PCB 7 NonDioxin
PCB 8 NonDioxin
PCB 9 NonDioxin
PCB 10 NonDioxin
PCB 11 NonDioxin
PCB 12/13 NonDioxin
PCB 14 NonDioxin
PCB 15 NonDioxin
PCB 16 NonDioxin
PCB 17 NonDioxin
PCB 18/30 NonDioxin
PCB 19 NonDioxin
PCB 20/28 NonDioxin
PCB 21/33 NonDioxin
PCB 22 NonDioxin
PCB 23 NonDioxin
PCB 24 NonDioxin
PCB 25 NonDioxin
PCB 26/29 NonDioxin
PCB 27 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
13,900 1.39 11,700 1.17 13,300 1.33 5,370 0.537 4,770 0.477 3,940 0.394 5,450 0.545
691 0.2073 532 0.1596 572 0.1716 218 0.0654 205 0.0615 112 0.0336 146 0.0438
51,400 1.542 47,500 1.425 36,700 1.101 17,700 0.531 13,800 0.414 9,170 0.2751 11,000 0.33
3,610 0.1083 3,220 0.0966 2,360 0.0708 1,160 0.0348 976 0.02928 572 0.01716 611 0.01833
104,000 3.12 95,600 2.868 84,000 2.52 50,800 1.524 31,000 0.93 25,200 0.756 28,000 0.84
2,620 0.0786 2,530 0.0759 1,480 0.0444 758 0.02274 709 0.02127 439 0.01317 505 0.01515
539 53.9 442 44.2 261 26.1 113 11.3 110 11 81.6 8.16 148 14.8
33,600 1.008 36,500 1.095 14,400 0.432 9,290 0.2787 4,770 0.1431 3,610 0.1083 3,710 0.1113
13,900 0.417 16,000 0.48 5,480 0.1644 3,960 0.1188 1,890 0.0567 1,430 0.0429 1,420 0.0426
0 U 0 0 U 0 0 U 0 0 U 0 0 U 0 0 U 0 0 U 0
7,270 0.2181 7,490 0.2247 2,050 0.0615 1,570 0.0471 661 0.01983 454 0.01362 416 0.01248
61.9893 51.7948 31.9957 14.45954 13.15268 9.81385 16.75866
10,800 J 10,600 J 1,880 1,860 798 1,320 4,560 J
2,250 2,210 299 196 111 193 713
8,240 J 7,670 1,450 1,130 619 729 2,410
74,700 J 68,100 J 16,500 12,500 7,640 4,900 10,200 J
2,400 2,030 764 400 348 74.2 77.9
32,800 30,400 11,600 6,060 4,500 2,380 4,700
5,760 5,210 1,690 914 776 196 326
140,000 124,000 41,800 26,900 20,700 8,010 13,200
8,820 8,220 2,580 1,350 1,140 304 488
1,810 1,550 645 454 327 311 592
7,570 7,010 5,430 2,130 1,270 2,150 4,350
12,600 12,000 8,890 3,440 2,550 2,770 6,020
43.9 40.5 12.1 6.07 0 U 0 U 0 U
69,200 67,000 41,900 20,800 14,200 15,900 35,800
78,100 63,700 36,400 22,300 19,400 4,930 5,510
94,600 85,400 44,800 27,200 24,200 9,630 12,600
193,000 151,000 80,600 49,700 37,600 13,700 16,300
27,300 J 24,300 J 8,460 5,860 4,040 1,820 2,520
338,000 264,000 222,000 102,000 68,700 52,800 69,300
165,000 128,000 90,500 44,300 36,600 10,900 11,400
104,000 83,000 73,700 32,900 26,800 10,300 12,100
416 346 291 73.6 78.6 19.9 30.3
2,260 1,910 849 422 573 127 206
26,700 22,900 15,900 8,490 6,030 4,890 8,000
58,700 49,100 33,400 16,700 13,300 9,320 14,600
13,900 12,700 6,170 3,670 3,340 1,880 2,810
6/22/20106/22/20106/22/20106/18/2010 6/18/2010 6/21/20106/21/2010
315 318315 320319
D-06182010-02 (dup)
321 324
GC-SD320-0.0-0.5 GC-SD321-0.0-0.5 GC-SD324-0.0-0.5GC-SD315-0.0-0.5 GC-SD318-0.0-0.5 GC-SD319-0.0-0.5
Page 39
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 31 NonDioxin
PCB 32 NonDioxin
PCB 34 NonDioxin
PCB 35 NonDioxin
PCB 36 NonDioxin
PCB 37 NonDioxin
PCB 38 NonDioxin
PCB 39 NonDioxin
PCB 40/41/71 NonDioxin
PCB 42 NonDioxin
PCB 43 NonDioxin
PCB 44/47/65 NonDioxin
PCB 45/51 NonDioxin
PCB 46 NonDioxin
PCB 48 NonDioxin
PCB 49/69 NonDioxin
PCB 50/53 NonDioxin
PCB 52 NonDioxin
PCB 54 NonDioxin
PCB 55 NonDioxin
PCB 56 NonDioxin
PCB 57 NonDioxin
PCB 58 NonDioxin
PCB 59/62/75 NonDioxin
PCB 60 NonDioxin
PCB 61/70/74/76 NonDioxin
PCB 63 NonDioxin
PCB 64 NonDioxin
PCB 66 NonDioxin
PCB 67 NonDioxin
PCB 68 NonDioxin
PCB 72 NonDioxin
PCB 73 NonDioxin
PCB 78 NonDioxin
PCB 79 NonDioxin
PCB 80 NonDioxin
PCB 82 NonDioxin
PCB 83/99 NonDioxin
PCB 84 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/22/20106/22/20106/22/20106/18/2010 6/18/2010 6/21/20106/21/2010
315 318315 320319
D-06182010-02 (dup)
321 324
GC-SD320-0.0-0.5 GC-SD321-0.0-0.5 GC-SD324-0.0-0.5GC-SD315-0.0-0.5 GC-SD318-0.0-0.5 GC-SD319-0.0-0.5
294,000 227,000 209,000 84,700 62,500 40,300 48,400
61,600 51,800 31,700 19,700 14,300 6,530 8,690
1,270 1,060 1,110 304 270 208 389
4,100 3,330 5,700 1,130 891 878 1,320
36.4 R 31.1 0 U 0 U 0 U 0 U 89
69,500 60,000 51,200 21,200 17,500 12,500 21,000
180 109 127 45.2 42.3 21.9 26.4
1,350 1,160 1,630 518 525 294 372
97,200 87,800 74,400 31,700 34,300 19,600 18,500
51,100 44,400 36,800 20,900 16,200 9,360 9,020
9,310 8,100 5,990 2,640 2,460 1,140 1,410
175,000 146,000 125,000 58,100 53,700 28,500 33,900
35,300 33,700 24,600 14,500 12,700 5,000 5,330
11,600 10,000 7,770 4,040 3,990 1,360 1,490
47,000 40,700 33,100 16,200 14,300 6,000 5,650
126,000 105,000 94,400 39,400 40,000 22,100 26,300
30,100 26,500 17,300 11,500 9,470 4,130 4,350
208,000 172,000 128,000 61,200 53,700 28,900 34,600
699 748 347 244 190 100 139
3,380 2,720 2,080 990 718 438 499
69,000 59,200 70,100 26,400 25,900 17,300 15,000
1,130 867 1,000 R 334 264 230 322
441 406 331 112 94.1 104 144
17,800 16,200 12,000 6,070 5,220 2,720 3,270
45,600 38,200 43,200 17,100 14,600 7,320 7,110
277,000 218,000 266,000 101,000 89,400 57,000 55,500
7,060 6,420 7,370 2,780 2,650 1,760 1,810
77,300 71,200 63,600 24,400 27,700 15,000 13,400
138,000 109,000 139,000 55,100 53,200 34,000 34,600
6,120 5,830 5,790 1,950 2,610 1,090 1,250
633 584 862 343 248 301 447
1,050 1,070 1,290 468 323 414 634
366 328 0 U 0 U 0 U 0 U 107
0 U 0 U 0 U 0 U 0 U 0 U 0 U
1,250 1,420 1,210 675 483 403 316
0 U 0 U 0 U 0 U 0 U 0 U 0 U
14,700 11,100 11,200 5,400 5,340 3,040 2,860
134,000 156,000 87,700 59,300 35,400 23,500 20,200
33,300 28,600 22,000 12,700 10,700 6,190 5,990
Page 40
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 85/116/117 NonDioxin
PCB 86/87/97/109/119/125 NonDioxin
PCB 88/91 NonDioxin
PCB 89 NonDioxin
PCB 90/101/113 NonDioxin
PCB 92 NonDioxin
PCB 93/95/98/100/102 NonDioxin
PCB 94 NonDioxin
PCB 96 NonDioxin
PCB 103 NonDioxin
PCB 104 NonDioxin
PCB 106 NonDioxin
PCB 107 NonDioxin
PCB 108/124 NonDioxin
PCB 110/115 NonDioxin
PCB 111 NonDioxin
PCB 112 NonDioxin
PCB 120 NonDioxin
PCB 121 NonDioxin
PCB 122 NonDioxin
PCB 127 NonDioxin
PCB 128/166 NonDioxin
PCB 129/138/160/163 NonDioxin
PCB 130 NonDioxin
PCB 131 NonDioxin
PCB 132 NonDioxin
PCB 133 NonDioxin
PCB 134/143 NonDioxin
PCB 135/151/154 NonDioxin
PCB 136 NonDioxin
PCB 137 NonDioxin
PCB 139/140 NonDioxin
PCB 141 NonDioxin
PCB 142 NonDioxin
PCB 144 NonDioxin
PCB 145 NonDioxin
PCB 146 NonDioxin
PCB 147/149 NonDioxin
PCB 148 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/22/20106/22/20106/22/20106/18/2010 6/18/2010 6/21/20106/21/2010
315 318315 320319
D-06182010-02 (dup)
321 324
GC-SD320-0.0-0.5 GC-SD321-0.0-0.5 GC-SD324-0.0-0.5GC-SD315-0.0-0.5 GC-SD318-0.0-0.5 GC-SD319-0.0-0.5
24,300 20,600 16,200 8,780 7,220 4,610 4,830
85,100 78,900 65,400 37,800 28,300 18,200 16,800
44,900 58,000 24,800 16,700 11,500 7,250 5,700
1,920 1,510 1,270 646 760 334 361
229,000 232,000 139,000 87,500 44,700 33,000 29,200
33,500 31,900 18,200 11,200 6,620 4,730 5,300
169,000 178,000 86,700 65,700 40,100 22,300 21,000
964 897 650 422 411 218 255
1,600 1,760 747 541 534 229 262
7,190 11,200 2,040 2,160 1,450 648 682
77.5 233 52.2 54.5 32.5 31.8 36.2
0 U 0 U 0 U 0 U 0 U 0 U 0 U
7,700 5,960 5,930 2,840 2,190 1,630 1,880
5,200 4,420 3,350 1,550 1,230 754 913
141,000 139,000 113,000 70,800 40,400 33,900 29,000
32 34.9 17.7 R 14.5 0 U 17.5 29.5
0 U 0 U 0 U 0 U 0 U 0 U 0 U
759 1,150 262 260 137 144 171
0 U 88.8 0 U 0 U 0 U 8.53 0 U
1,670 1,330 1,220 482 493 275 326
216 280 0 U 0 U 0 U 0 U 32.5
36,200 35,200 17,800 11,000 6,130 4,720 4,620
413,000 417,000 164,000 143,000 68,300 45,300 35,600
13,800 13,600 6,890 3,970 2,470 1,670 1,860
3,570 3,980 1,530 R 890 558 314 391
109,000 111,000 41,200 36,100 19,500 12,900 10,500
5,260 5,960 1,870 R 1,180 713 493 595
19,600 20,800 6,680 R 5,040 3,000 1,620 1,700
224,000 249,000 57,500 63,500 27,800 17,300 15,500
62,800 71,000 14,400 R 16,600 8,950 4,780 4,270
8,970 10,700 5,100 2,730 1,800 1,230 1,270
6,450 7,850 2,160 R 1,450 892 484 620
104,000 114,000 33,100 32,000 13,300 8,020 6,430
0 U 0 U 0 U 0 U 0 U 0 U 0 U
29,100 26,900 6,910 6,040 3,150 1,690 1,760
47.3 39.1 27 R 12.3 0 U 7.15 0 U
68,500 85,800 22,000 21,700 9,880 7,090 6,290
491,000 554,000 153,000 157,000 74,600 41,700 33,500
1,870 2,820 434 R 402 242 145 163
Page 41
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 150 NonDioxin
PCB 152 NonDioxin
PCB 153/168 NonDioxin
PCB 155 NonDioxin
PCB 158 NonDioxin
PCB 159 NonDioxin
PCB 161 NonDioxin
PCB 162 NonDioxin
PCB 164 NonDioxin
PCB 165 NonDioxin
PCB 170 NonDioxin
PCB 171/173 NonDioxin
PCB 172 NonDioxin
PCB 174 NonDioxin
PCB 175 NonDioxin
PCB 176 NonDioxin
PCB 177 NonDioxin
PCB 178 NonDioxin
PCB 179 NonDioxin
PCB 180/193 NonDioxin
PCB 181 NonDioxin
PCB 182 NonDioxin
PCB 183/185 NonDioxin
PCB 184 NonDioxin
PCB 186 NonDioxin
PCB 187 NonDioxin
PCB 188 NonDioxin
PCB 190 NonDioxin
PCB 191 NonDioxin
PCB 192 NonDioxin
PCB 194 NonDioxin
PCB 195 NonDioxin
PCB 196 NonDioxin
PCB 197/200 NonDioxin
PCB 198/199 NonDioxin
PCB 201 NonDioxin
PCB 202 NonDioxin
PCB 203 NonDioxin
PCB 204 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/22/20106/22/20106/22/20106/18/2010 6/18/2010 6/21/20106/21/2010
315 318315 320319
D-06182010-02 (dup)
321 324
GC-SD320-0.0-0.5 GC-SD321-0.0-0.5 GC-SD324-0.0-0.5GC-SD315-0.0-0.5 GC-SD318-0.0-0.5 GC-SD319-0.0-0.5
5,810 10,300 1,070 1,400 771 339 390
217 266 73.1 90.3 75.1 42.3 50.2
599,000 690,000 188,000 187,000 81,000 50,900 39,100
459 766 112 141 66.9 51.5 55.3
39,400 43,300 15,900 11,900 5,530 3,680 3,120
5,450 5,820 2,300 2,110 860 560 355
0 U 0 U 0 U 0 U 0 U 0 U 0 U
602 610 269 R 139 73.4 84.3 98.7
33,300 35,000 11,700 8,680 4,300 2,660 2,400
31 65.3 25.3 0 U 0 U 0 U 25.4
116,000 129,000 55,500 44,400 17,700 15,800 9,650
51,600 49,100 15,900 17,800 5,760 4,410 3,620
29,500 27,800 9,760 9,770 2,910 2,460 1,900
109,000 133,000 58,900 45,300 21,000 16,200 10,800
8,180 8,120 2,390 2,000 766 520 599
24,100 23,200 6,910 6,510 2,600 1,630 1,630
92,000 80,800 26,700 22,000 9,470 8,740 6,820
39,400 39,200 11,700 11,500 4,190 3,080 2,780
84,600 66,000 24,100 23,100 9,490 6,210 5,750
299,000 340,000 153,000 122,000 45,200 30,700 25,500
1,520 1,650 412 430 145 115 107
458 385 129 91.1 51.5 51.6 74.1
101,000 115,000 44,200 35,200 14,800 11,400 9,260
101 105 40.9 24.7 0 U 17.5 30.6
0 U 0 U 0 U 0 U 0 U 0 U 0 U
178,000 222,000 89,900 75,500 30,900 20,900 18,600
1,490 2,230 329 398 165 111 107
37,900 39,100 12,300 13,300 3,570 2,900 2,120
8,110 7,870 2,430 2,450 771 582 522
0 U 0 U 0 U 0 U 0 U 0 U 0 U
75,900 78,300 31,800 21,500 8,510 6,860 4,880
28,600 33,500 13,800 9,260 3,350 2,440 1,530
39,400 41,900 17,400 11,700 4,410 3,270 3,150
13,400 13,300 5,620 3,150 1,350 991 1,050
73,100 77,000 40,800 22,500 9,460 7,730 8,210
9,920 10,300 4,630 2,160 1,220 813 1,140
12,700 14,500 7,940 3,850 1,870 1,650 1,760
56,700 57,300 25,600 15,600 6,030 4,870 5,190
29.1 26.6 10.3 4.98 0 U 0 U 0 U
Page 42
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 205 NonDioxin
PCB 206 NonDioxin
PCB 207 NonDioxin
PCB 208 NonDioxin
PCB 209 NonDioxin
PCB Nondioxin
Total PCB Congeners
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/22/20106/22/20106/22/20106/18/2010 6/18/2010 6/21/20106/21/2010
315 318315 320319
D-06182010-02 (dup)
321 324
GC-SD320-0.0-0.5 GC-SD321-0.0-0.5 GC-SD324-0.0-0.5GC-SD315-0.0-0.5 GC-SD318-0.0-0.5 GC-SD319-0.0-0.5
4,520 5,120 1,480 1,000 441 300 309
19,400 20,800 15,300 6,390 3,370 3,300 3,560
1,690 2,890 2,210 742 441 372 433
2,840 4,650 5,070 1,810 987 1,220 1,550
5,520 4,720 5,100 2,910 1,510 2,430 3,080
8,091,652 7,910,886 4,227,280 2,650,774 1,640,005 1,015,419 1,046,401
8,323,182 8,132,400 4,387,883 2,741,713 1,698,896 1,060,428 1,097,807
Page 43
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 77 Dioxin 0.0001
PCB 81 Dioxin 0.0003
PCB 105 Dioxin 0.00003
PCB 114 Dioxin 0.00003
PCB 118 Dioxin 0.00003
PCB 123 Dioxin 0.00003
PCB 126 Dioxin 0.1
PCB 156/157 Dioxin 0.00003
PCB 167 Dioxin 0.00003
PCB 169 Dioxin 0.03
PCB 189 Dioxin 0.00003
PCB Dioxin
PCB 1 NonDioxin
PCB 2 NonDioxin
PCB 3 NonDioxin
PCB 4 NonDioxin
PCB 5 NonDioxin
PCB 6 NonDioxin
PCB 7 NonDioxin
PCB 8 NonDioxin
PCB 9 NonDioxin
PCB 10 NonDioxin
PCB 11 NonDioxin
PCB 12/13 NonDioxin
PCB 14 NonDioxin
PCB 15 NonDioxin
PCB 16 NonDioxin
PCB 17 NonDioxin
PCB 18/30 NonDioxin
PCB 19 NonDioxin
PCB 20/28 NonDioxin
PCB 21/33 NonDioxin
PCB 22 NonDioxin
PCB 23 NonDioxin
PCB 24 NonDioxin
PCB 25 NonDioxin
PCB 26/29 NonDioxin
PCB 27 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
3,080 0.308 2,790 0.279 9,340 0.934 3,750 0.375 3,050 0.305
74.2 0.02226 70 0.021 150 0.045 74.3 0.02229 74.4 0.02232
5,780 0.1734 6,470 0.1941 12,200 0.366 3,520 0.1056 3,780 0.1134
352 0.01056 416 0.01248 623 0.01869 188 0.00564 208 0.00624
15,200 0.456 20,700 0.621 38,300 1.149 9,900 0.297 10,300 0.309
276 0.00828 392 0.01176 512 0.01536 190 0.0057 192 0.00576
50 5 46 4.6 182 18.2 69.3 6.93 68.2 6.82
1,900 0.057 2,230 0.0669 4,050 0.1215 1,050 0.0315 1,080 0.0324
700 0.021 927 0.02781 1,350 0.0405 361 0.01083 408 0.01224
0 U 0 0 U 0 0 U 0 0 U 0 0 U 0
180 0.0054 184 0.00552 421 0.01263 89.7 0.002691 98.8 0.002964
6.0619 5.83957 20.90268 7.786251 7.629324
1,140 1,040 6,650 J 4,620 J 4,520 J
200 166 2,510 839 761
623 540 4,870 J 2,380 J 2,180 J
4,130 3,620 21,100 J 8,380 J 8,370 J
50 36.5 200 32.9 38.1
1,920 1,690 7,210 3,570 3,560
158 137 718 188 197
6,250 5,550 22,400 9,390 9,490
226 202 894 296 318
273 235 660 441 447
2,150 1,680 22,100 3,900 3,320
2,400 2,100 15,900 5,290 5,080
5.08 0 U 28.8 0 U 0 U
12,800 11,800 62,000 26,200 27,200
3,490 2,830 11,300 1,840 2,080
6,960 6,610 25,600 6,290 6,470
10,200 9,260 32,000 6,690 6,990
1,500 1,260 5,940 J 1,760 J 1,530
36,500 36,800 113,000 41,800 41,800
7,480 6,390 19,700 4,730 4,680
7,880 6,320 24,400 6,040 6,270
15.2 10.4 43.3 0 U 0 U
104 78.3 436 74.1 86.5
4,380 4,230 14,900 5,500 5,340
8,210 7,790 25,800 10,000 9,800
1,450 1,280 5,160 1,560 1,620
6/18/20106/18/20106/17/20106/21/20106/21/2010
324 330 333
D-06212010-01 (dup)
325 326
GC-SD325-0.0-0.5 GC-SD326-0.0-0.5 GC-SD330-0.0-0.5 GC-SD333-0.0-0.5
Page 44
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 31 NonDioxin
PCB 32 NonDioxin
PCB 34 NonDioxin
PCB 35 NonDioxin
PCB 36 NonDioxin
PCB 37 NonDioxin
PCB 38 NonDioxin
PCB 39 NonDioxin
PCB 40/41/71 NonDioxin
PCB 42 NonDioxin
PCB 43 NonDioxin
PCB 44/47/65 NonDioxin
PCB 45/51 NonDioxin
PCB 46 NonDioxin
PCB 48 NonDioxin
PCB 49/69 NonDioxin
PCB 50/53 NonDioxin
PCB 52 NonDioxin
PCB 54 NonDioxin
PCB 55 NonDioxin
PCB 56 NonDioxin
PCB 57 NonDioxin
PCB 58 NonDioxin
PCB 59/62/75 NonDioxin
PCB 60 NonDioxin
PCB 61/70/74/76 NonDioxin
PCB 63 NonDioxin
PCB 64 NonDioxin
PCB 66 NonDioxin
PCB 67 NonDioxin
PCB 68 NonDioxin
PCB 72 NonDioxin
PCB 73 NonDioxin
PCB 78 NonDioxin
PCB 79 NonDioxin
PCB 80 NonDioxin
PCB 82 NonDioxin
PCB 83/99 NonDioxin
PCB 84 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/18/20106/18/20106/17/20106/21/20106/21/2010
324 330 333
D-06212010-01 (dup)
325 326
GC-SD325-0.0-0.5 GC-SD326-0.0-0.5 GC-SD330-0.0-0.5 GC-SD333-0.0-0.5
26,400 26,300 76,800 29,400 29,000
6,030 5,200 16,800 4,710 4,750
191 154 912 305 273
792 604 3,400 1,230 981
0 U 23 206 92.7 82.2
8,600 8,650 33,100 12,500 13,200
18.4 14.1 60.5 0 U 0 U
230 201 816 258 232
13,000 12,000 35,000 9,270 9,030
6,340 5,910 20,700 4,180 4,230
819 691 2,700 605 572
20,700 18,500 68,000 16,200 15,800
3,560 3,050 9,960 1,820 1,810
1,080 790 2,780 543 544
3,980 3,540 11,600 2,030 1,950
15,600 20,900 52,500 14,200 13,500
3,070 2,880 8,080 1,710 1,640
22,400 20,400 65,400 14,700 14,000
67.2 58.5 191 60.2 J 43.4
217 188 594 244 233
11,100 11,200 28,500 6,900 6,920
171 203 590 235 220
76.3 72.5 508 117 121
2,040 1,730 7,330 1,610 1,600
4,350 4,280 6,660 2,660 2,630
36,800 38,700 86,100 26,300 25,400
1,050 1,010 3,450 1,040 1,000
9,360 9,600 27,300 5,540 5,560
23,300 25,000 60,900 17,900 17,800
810 834 2,170 701 669
256 233 1,120 390 348
327 334 1,830 497 468
0 U 0 U 210 89.5 78.3
0 U 0 U 0 U 0 U 0 U
253 311 668 137 135
0 U 0 U 0 U 0 U 0 U
2,020 1,780 4,450 889 1,000
12,800 19,100 34,400 6,920 7,160
4,230 4,650 11,300 2,090 2,270
Page 45
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 85/116/117 NonDioxin
PCB 86/87/97/109/119/125 NonDioxin
PCB 88/91 NonDioxin
PCB 89 NonDioxin
PCB 90/101/113 NonDioxin
PCB 92 NonDioxin
PCB 93/95/98/100/102 NonDioxin
PCB 94 NonDioxin
PCB 96 NonDioxin
PCB 103 NonDioxin
PCB 104 NonDioxin
PCB 106 NonDioxin
PCB 107 NonDioxin
PCB 108/124 NonDioxin
PCB 110/115 NonDioxin
PCB 111 NonDioxin
PCB 112 NonDioxin
PCB 120 NonDioxin
PCB 121 NonDioxin
PCB 122 NonDioxin
PCB 127 NonDioxin
PCB 128/166 NonDioxin
PCB 129/138/160/163 NonDioxin
PCB 130 NonDioxin
PCB 131 NonDioxin
PCB 132 NonDioxin
PCB 133 NonDioxin
PCB 134/143 NonDioxin
PCB 135/151/154 NonDioxin
PCB 136 NonDioxin
PCB 137 NonDioxin
PCB 139/140 NonDioxin
PCB 141 NonDioxin
PCB 142 NonDioxin
PCB 144 NonDioxin
PCB 145 NonDioxin
PCB 146 NonDioxin
PCB 147/149 NonDioxin
PCB 148 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/18/20106/18/20106/17/20106/21/20106/21/2010
324 330 333
D-06212010-01 (dup)
325 326
GC-SD325-0.0-0.5 GC-SD326-0.0-0.5 GC-SD330-0.0-0.5 GC-SD333-0.0-0.5
3,040 3,150 7,980 1,740 1,880
11,100 13,200 26,300 5,280 5,610
3,800 5,630 8,660 1,890 2,010
221 164 672 97.1 106
18,500 23,900 45,600 8,990 9,570
3,140 4,220 10,200 2,030 2,100
15,600 16,800 36,000 6,630 7,020
146 119 442 126 123
157 130 421 86.4 84.1
379 389 962 187 190
19.2 18 19.6 0 U 0 U
0 U 0 U 0 U 0 U 0 U
1,080 1,270 3,380 854 892
511 606 939 292 304
20,600 25,400 48,000 9,930 10,700
12.8 13 R 82 19.4 0 U
0 U 0 U 0 U 0 U 0 U
87.3 108 445 85.3 83.2
6.97 0 U 20.4 0 U 0 U
200 189 364 103 122
0 U 0 U 0 U 0 U 0 U
2,550 2,580 5,910 1,370 1,540
19,800 27,000 39,800 8,360 9,120
1,070 949 2,830 579 636
185 186 447 81.3 91
6,530 6,130 13,100 2,480 2,760
277 290 904 206 218
1,010 992 2,080 455 489
7,780 9,370 17,100 3,280 3,580
2,340 2,690 5,530 1,020 1,110
699 740 1,400 338 357
276 293 821 158 169
3,530 3,150 5,110 1,060 1,160
0 U 0 U 0 U 0 U 0 U
822 724 1,880 339 381
4.79 4.09 R 19.1 0 U 0 U
3,200 4,820 8,050 1,630 1,760
19,900 24,700 35,300 6,880 7,630
69.5 73.2 160 45.8 46.7
Page 46
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 150 NonDioxin
PCB 152 NonDioxin
PCB 153/168 NonDioxin
PCB 155 NonDioxin
PCB 158 NonDioxin
PCB 159 NonDioxin
PCB 161 NonDioxin
PCB 162 NonDioxin
PCB 164 NonDioxin
PCB 165 NonDioxin
PCB 170 NonDioxin
PCB 171/173 NonDioxin
PCB 172 NonDioxin
PCB 174 NonDioxin
PCB 175 NonDioxin
PCB 176 NonDioxin
PCB 177 NonDioxin
PCB 178 NonDioxin
PCB 179 NonDioxin
PCB 180/193 NonDioxin
PCB 181 NonDioxin
PCB 182 NonDioxin
PCB 183/185 NonDioxin
PCB 184 NonDioxin
PCB 186 NonDioxin
PCB 187 NonDioxin
PCB 188 NonDioxin
PCB 190 NonDioxin
PCB 191 NonDioxin
PCB 192 NonDioxin
PCB 194 NonDioxin
PCB 195 NonDioxin
PCB 196 NonDioxin
PCB 197/200 NonDioxin
PCB 198/199 NonDioxin
PCB 201 NonDioxin
PCB 202 NonDioxin
PCB 203 NonDioxin
PCB 204 NonDioxin
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/18/20106/18/20106/17/20106/21/20106/21/2010
324 330 333
D-06212010-01 (dup)
325 326
GC-SD325-0.0-0.5 GC-SD326-0.0-0.5 GC-SD330-0.0-0.5 GC-SD333-0.0-0.5
153 175 180 49.5 52
20.9 26.9 47.4 0 U 0 U
19,100 23,900 41,000 8,250 9,070
27.2 28.6 96.2 0 U 0 U
1,650 1,840 3,380 661 730
228 189 362 68.5 72
0 U 0 U 0 U 0 U 0 U
53.8 58.2 122 30.9 36.8
1,310 1,330 2,580 514 547
12.2 0 U 33.7 0 U 0 U
5,180 5,550 9,670 1,840 2,170
1,670 1,600 3,710 660 756
872 930 2,010 349 428
5,490 5,200 10,400 1,740 2,050
234 198 592 115 131
697 589 1,800 297 365
3,320 3,840 7,650 1,440 1,740
1,210 1,210 3,270 649 794
2,600 2,470 6,370 1,130 1,350
12,100 14,600 24,100 4,560 5,710
42.6 50.1 88.5 23.1 23.8
30.7 31.7 143 24.3 26
4,130 4,210 9,400 1,660 2,080
9.68 10 42.7 0 U 0 U
0 U 0 U 0 U 0 U 0 U
9,220 12,600 19,700 3,920 4,850
45.2 51.6 52.2 23.5 21
1,010 1,080 2,180 408 479
201 209 457 83.7 92.6
0 U 0 U 0 U 0 U 0 U
2,430 2,520 6,190 1,240 1,760
849 840 1,380 380 515
1,570 1,340 3,970 741 1,070
434 497 1,190 247 298
3,530 3,620 12,800 2,160 2,960
428 397 1,530 332 392
969 987 3,580 665 801
2,300 2,300 6,550 1,300 1,790
0 U 0 U 0 U 0 U 0 U
Page 47
TABLE 2.12 Supplement a
PCB Congener Concentrations (ng/kg) in Surface Sediments and PCB Dioxin, PCB Non-dioxin, and PCB total calculations
Gowanus Canal Remedial Investigation
Brooklyn, New York
Parameter Type TEF
PCB 205 NonDioxin
PCB 206 NonDioxin
PCB 207 NonDioxin
PCB 208 NonDioxin
PCB 209 NonDioxin
PCB Nondioxin
Total PCB Congeners
Conc TEQ Conc TEQ Conc TEQ Conc TEQ Conc TEQ
6/18/20106/18/20106/17/20106/21/20106/21/2010
324 330 333
D-06212010-01 (dup)
325 326
GC-SD325-0.0-0.5 GC-SD326-0.0-0.5 GC-SD330-0.0-0.5 GC-SD333-0.0-0.5
119 126 349 71.5 102
2,270 2,790 7,600 2,020 1,880
228 289 524 290 269
935 997 2,550 802 901
2,170 1,950 8,740 1,840 1,910
600,025 641,357 1,669,923 447,092 457,462
627,617 675,582 1,737,051 466,284 476,721
Page 48
Gowanus Canal Remedial Investigation, Brooklyn, New York
Screening Toxicity Values from USEPA Regional Screening Level (RSL) Table, November 2010. sediment - screening toxicity value is residential RSL
surface water - screening toxicity value is tap water RSLair - screening toxicity value is ambient air RSLfish - screening toxicity value is fish tissue RSL from EPA Region III Website
Footnotes/DefinitionsARAR/TBC = Applicable or Relevant and Appropriate Requirement/ To Be ConsideredC = CarcinogenicCOPC = Chemical of Potential ConcernJ = Estimated ValueN = Noncarcinogenic
N/A = Not available or not applicable
NJ = Qualitative identification questionable due to poor resolution. Presumptively present at approximate quantityNRWQC = U.S. Environmental Protection Agency (USEPA). 2009. National Recommended Water Quality Criteria for Human Health for Consumption of Organism only from EPA's National Recommended Water Quality Criteria, Office of Water, Office of Science and Technology, 2009. NYSDEC = New York State DEC, Chapter X, Division of Water, Part 703: Surface Water and Groundwater Quality Standards and Groundwater Effluent Limitations . Values correspond to classification of canal (SD) and classification of Bay (I) and are the standards for Health - fish consumption and recreation.
Surrogates used for those Chemicals without a Screening Toxicity Value (RSL)1,3-dichlorobenzene - used 1,2-dichlorobenzene as surrogateacenaphthylene - used acenaphthalene as surrogatebenzo(g,h,i)perylene - used pyrene as surrogatechromoium - used hexavalent chromiumdimethyl phthalate - calculated based on PPRTV toxicity value form PPRTV profile dated 9/25/2007PCB dioxin - used 2,3,7,8-TCDD, however, did not use 2,3,7,8-TCDD RSL, but updated the RSL using the cancer slope factor for 2,3,7,8-TCDD from USEPA, 2005, Health Assessment Document for Polychlorinated Dibenzo-p-Dioxins, EPA 600/8-84-014F.PCB non-dioxin - used Total PCBsphenanthrene - used anthracene as surrogate
Notes for Tables 2.1 through 2.12Selection of Chemicals of Potential Concern
TABLE H-3.1
Exposed Sediment in Canal - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Sediment
Surface Sediment
Exposure Point
Exposed and near shore sediment in Gowanus Canal
Acenaphthene 35700ug/kg 460000366000 99% KM (Chebyshev) UCLug/kg366000
Benzo(a)anthracene 29300ug/kg 320000127000 95% Chebyshev (Mean, Sd) UCLug/kg127000
Benzo(a)pyrene 19700ug/kg 200000107000 97.5% KM (Chebyshev) UCLug/kg107000
Benzo(b)fluoranthene 21000ug/kg 210000113000 97.5% KM (Chebyshev) UCLug/kg113000
Benzo(k)fluoranthene 12500ug/kg 12000064600 97.5% KM (Chebyshev) UCLug/kg64600
Bis(2-ethylhexyl) phthalate 18800ug/kg 5700033400 95% KM (Chebyshev) UCLug/kg33400
Chrysene 29300ug/kg 320000253000 99% Chebyshev (Mean, Sd) UCLug/kg253000
Dibenz(a,h)anthracene 2080ug/kg 140006180 95% KM (Chebyshev) UCLug/kg6180
Fluoranthene 54500ug/kg 630000496000 99% Chebyshev (Mean, Sd) UCLug/kg496000
Indeno(1,2,3-c,d)pyrene 12700ug/kg 12000048900 95% Chebyshev (Mean, Sd) UCLug/kg48900
Naphthalene 2060ug/kg 91003410 95% KM (t) UCLug/kg3410
Pyrene 61100ug/kg 670000529000 99% Chebyshev (Mean, Sd) UCLug/kg529000
Aroclor 1248 195ug/kg 2200--- Max, detected in <3 samplesug/kg2200
Aroclor 1254 81.8ug/kg 590--- Max, detected in <3 samplesug/kg590
Aroclor 1260 338ug/kg 3400863 95% KM (BCA) UCLug/kg863
PCB Dioxin 20.5ng/kg 11140.2 95% Approximate Gamma UCLng/kg40.2
PCB Nondioxin 2520000ng/kg 147000005230000 95% Approximate Gamma UCLng/kg5230000
Total PCB Congeners 2610000ng/kg 151000005390000 95% Approximate Gamma UCLng/kg5390000
Aluminum 13800mg/kg 1890015900 95% Student's-t UCLmg/kg15900
Arsenic 13.1mg/kg 44.718.0 95% Approximate Gamma UCLmg/kg18
Cadmium 6.20mg/kg 20.29.62 95% Approximate Gamma UCLmg/kg9.62
Chromium 78.7mg/kg 13993.5 95% Student's-t UCLmg/kg93.5
Cobalt 8.95mg/kg 14.812.9 95% KM (Percentile Bootstrap) UCLmg/kg12.9
Copper 264mg/kg 790352 95% Approximate Gamma UCLmg/kg352
Iron 31400mg/kg 8700040000 95% Modified-t UCLmg/kg40000
Lead 660mg/kg 42201870 95% Chebyshev (Mean, Sd) UCLmg/kg1870
Manganese 273mg/kg 480314 95% Student's-t UCLmg/kg314
Vanadium 45.0mg/kg 61.250.1 95% Student's-t UCLmg/kg50.1
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA3 1/11/2011 12:02:50 PM
TABLE H-3.2
Surface Water in Canal, Dry Weather - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum
Detected Value
95 % UCL
StatisticUnits
Arithmetic
Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water
Surface Water
Exposure Point
Gowanus Canal
Benzene 1.20ug/l 11.02.24 95% KM (BCA)ug/l2.24
Benzo(a)anthracene 0.131ug/l 0.830.266 95% KM (Percentile Bootstrap)ug/l0.266
Benzo(a)pyrene 0.0863ug/l 0.660.66 95% KM (Percentile Bootstrap)ug/l0.66
Benzo(b)fluoranthene 0.216ug/l 0.880.299 95% KM (BCA)ug/l0.299
Bis(2-ethylhexyl) phthalate 2.51ug/l 5.602.45 95% KM (t)ug/l2.45
Indeno(1,2,3-c,d)pyrene 0.0847ug/l 0.220.132 95% KM (% Bootstrap)ug/l0.132
Arsenic 16.0ug/l 23.419.9 95% KM (Percentile Bootstrap)ug/l19.9
Chromium 11.7ug/l 99.718.9 95% KM (% Bootstrap)ug/l18.9
Copper 88.1ug/l 232172 95% KM (Percentile Bootstrap)ug/l172
Selenium 32.0ug/l 50.941.0 95% KM (Percentile Bootstrap)ug/l41
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA3 12/10/2010 1:11:10 PM
TABLE H-3.3
Surface Water in Canal, Wet Weather - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water
Surface Water
Exposure Point
Gowanus Canal
1,4-dichlorobenzene 0.431ug/l 0.870.59 95% KM (Percentile Bootstrap)ug/l0.59
Benzene 0.563ug/l 2.900.835 95% KM (BCA)ug/l0.835
Chloroform 0.423ug/l 0.690.559 95% KM (Percentile Bootstrap)ug/l0.559
Ethylbenzene 0.451ug/l 2.600.868 95% KM (Chebyshev)ug/l0.868
Tetrachloroethylene(PCE) 16.5ug/l 40.024.4 95% KM (Chebyshev)ug/l24.4
Benzo(a)anthracene 0.0758ug/l 0.150.104 95% KM (Percentile Bootstrap)ug/l0.104
Benzo(a)pyrene 0.103ug/l 0.300.205 95% KM (Percentile Bootstrap)ug/l0.205
Benzo(b)fluoranthene 0.154ug/l 0.330.189 95% KM (Percentile Bootstrap)ug/l0.189
Dibenz(a,h)anthracene 0.0742ug/l 0.110.101 95% KM (Percentile Bootstrap)ug/l0.101
Indeno(1,2,3-c,d)pyrene 0.309ug/l 1.100.50 95% KM (Chebyshev)ug/l0.5
Naphthalene 0.136ug/l 1.400.364 95% KM (Percentile Bootstrap)ug/l0.364
Arsenic 14.9ug/l 26.216.6 95% Student's-tug/l16.6
Chromium 6.72ug/l 29.38.53 95% Modified-tug/l8.53
Cobalt 4.96ug/l 3.90--- Max, detected in <3 samplesug/l3.9
Lead 13.0ug/l 26.814.9 95% Student's-tug/l14.9
Selenium 29.3ug/l 64.633.6 95% Approximate Gammaug/l33.6
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA3 11/29/2010 4:25:16 PM
TABLE H-3.4
Ambient Air at Canal Level,Round 1 - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Air
Air
Exposure Point
Ambient air at canal level
Benzene 0.841ug/m3 1.100.914 95% Student's-t UCLug/m30.914
Chloroform 0.181ug/m3 0.280.222 95% KM (Percentile Bootstrap) UCLug/m30.222
Ethylbenzene 1.34ug/m3 5.102.25 95% H-UCLug/m32.25
Xylene, total 4.30ug/m3 16.010.1 95% Chebyshev (Mean, Sd) UCLug/m310.1
Naphthalene 1.10ug/m3 3.402.09 95% Approximate Gamma UCLug/m32.09
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA3 11/29/2010 12:35:38 PM
TABLE H-3.5
Ambient Air at Canal Level, Round 2 - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Air
Air
Exposure Point
Ambient air at canal level
Benzene 1.38ug/m3 3.801.94 95% Approximate Gamma UCLug/m31.94
Chloroform 0.174ug/m3 0.240.205 95% KM (Percentile Bootstrap) UCLug/m30.205
Ethylbenzene 1.40ug/m3 4.402.12 95% Approximate Gamma UCLug/m32.12
Xylene, total 6.76ug/m3 28.017.3 95% KM (Chebyshev) UCLug/m317.3
Naphthalene 1.30ug/m3 2.602.19 95% Approximate Gamma UCLug/m32.19
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA3 11/29/2010 12:36:16 PM
TABLE H-3.6
Ambient Air at Street Level, Round 1 - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Air
Air
Exposure Point
Ambient air at Street Level
Benzene 0.948ug/m3 2.301.26 95% Modified-t UCLug/m31.26
Chloroform 0.18ug/m3 0.390.245 95% KM (t) UCLug/m30.245
Ethylbenzene 0.894ug/m3 1.701.09 95% Student's-t UCLug/m31.09
Naphthalene 0.533ug/m3 1.301.39 Max,UCL exceeds max detected concentrationug/m31.3
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA3 11/29/2010 12:37:05 PM
TABLE H-3.7
Ambient Air at Street Level, Round 2 - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Air
Air
Exposure Point
Ambient air at Street Level
Benzene 0.982ug/m3 1.401.11 95% Student's-t UCLug/m31.11
Chloroform 0.206ug/m3 0.450.331 95% KM (Chebyshev) UCLug/m30.331
Ethylbenzene 0.956ug/m3 1.801.24 95% Approximate Gamma UCLug/m31.24
Naphthalene 1.19ug/m3 4.403.02 95% H-UCLug/m33.02
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA3 11/29/2010 12:37:43 PM
TABLE H-3.8
Striped Bass Filet from Canal - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Striped Bass in Gowanus Canal
P,P'-DDE 8.46ug/kg 12.0--- Max, detected in <8 samplesug/kg12
P,P'-DDT 3.24ug/kg 9.60--- Max, detected in <8 samplesug/kg9.6
PCB Dioxin 3.35ng/kg 4.31--- Max, detected in <8 samplesng/kg4.31
PCB Nondioxin 331000ng/kg 409000--- Max, detected in <8 samplesng/kg409000
Total PCB Congeners 354000ng/kg 435000--- Max, detected in <8 samplesng/kg435000
Arsenic 0.53mg/kg 0.68--- Max, detected in <8 samplesmg/kg0.68
Mercury 0.194mg/kg 0.20--- Max, detected in <8 samplesmg/kg0.2
Selenium 1.51mg/kg 1.20--- Max, detected in <8 samplesmg/kg1.2
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA3 1/14/2011 10:02:58 AM
TABLE H-3.9
White Perch Filet from Canal - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
White Perch in Gowanus Canal
PCB Dioxin 4.77ng/kg 5.08--- Max, detected in <8 samplesng/kg5.08
PCB Nondioxin 370000ng/kg 437000--- Max, detected in <8 samplesng/kg437000
Total PCB Congeners 393000ng/kg 462000--- Max, detected in <8 samplesng/kg462000
Mercury 0.175mg/kg 0.19--- Max, detected in <8 samplesmg/kg0.19
Selenium 1.55mg/kg 1.40--- Max, detected in <8 samplesmg/kg1.4
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA3 1/14/2011 10:03:30 AM
TABLE H-3.10
Atlantic Eel Filet from Canal - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Eel in Gowanus Canal
Alpha-chlordane 13.5ug/kg 22.0--- Max, detected in <8 samplesug/kg22
Dieldrin 7.59ug/kg 17.0--- Max, detected in <8 samplesug/kg17
Gamma-chlordane 7.92ug/kg 13.0--- Max, detected in <8 samplesug/kg13
P,P'-DDD 27.3ug/kg 38.0--- Max, detected in <8 samplesug/kg38
P,P'-DDE 16.3ug/kg 25.0--- Max, detected in <8 samplesug/kg25
P,P'-DDT 20.1ug/kg 47.0--- Max, detected in <8 samplesug/kg47
PCB Dioxin 8.69ng/kg 14.1--- Max, detected in <8 samplesng/kg14.1
PCB Nondioxin 792000ng/kg 1220000--- Max, detected in <8 samplesng/kg1220000
Total PCB Congeners 862000ng/kg 1350000--- Max, detected in <8 samplesng/kg1350000
Arsenic 0.488mg/kg 0.50--- Max, detected in <8 samplesmg/kg0.5
Chromium 0.523mg/kg 0.67--- Max, detected in <8 samplesmg/kg0.67
Copper 2.12mg/kg 7.40--- Max, detected in <8 samplesmg/kg7.4
Cyanide, Total 1.25mg/kg 3.10--- Max, detected in <8 samplesmg/kg3.1
Mercury 0.098mg/kg 0.26--- Max, detected in <8 samplesmg/kg0.26
Selenium 1.57mg/kg 1.40--- Max, detected in <8 samplesmg/kg1.4
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA3 1/14/2011 10:02:12 AM
TABLE H-3.11
Blue Crab Edible Tissue and Hepatopancreas from Canal - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Crab in Gowanus Canal
Benzo(a)anthracene 4.27ug/kg 15.77.70 95% KM (t) UCLug/kg7.7
Benzo(a)pyrene 7.28ug/kg 17.511.8 95% KM (Chebyshev) UCLug/kg11.8
Benzo(b)fluoranthene 4.82ug/kg 9.616.39 95% KM (BCA) UCLug/kg6.39
Dibenz(a,h)anthracene 3.56ug/kg 5.133.94 95% Student's-t UCLug/kg3.94
Indeno(1,2,3-c,d)pyrene 9.22ug/kg 12.39.91 95% Student's-t UCLug/kg9.91
PCB Dioxin 4.76ng/kg 5.545.04 95% Student's-t UCLng/kg5.04
PCB Nondioxin 135000ng/kg 167000143000 95% Student's-t UCLng/kg143000
Total PCB Congeners 157000ng/kg 194000166000 95% Student's-t UCLng/kg166000
Arsenic 1.21mg/kg 1.471.31 95% Student's-t UCLmg/kg1.31
Copper 9.65mg/kg 11.710.2 95% Student's-t UCLmg/kg10.2
Mercury 0.115mg/kg 0.1420.124 95% Student's-t UCLmg/kg0.124
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA3 1/13/2011 8:44:27 AM
TABLE H-3.12
All Surface Sediment in Canal - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Sediment
Overflow Surface Sediment
Exposure Point
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
2-methylnaphthalene 33700ug/kg 870000358000 99% KM (Chebyshev)ug/kg358000
Acenaphthene 41200ug/kg 580000309000 99% KM (Chebyshev)ug/kg309000
Benzo(a)anthracene 36500ug/kg 490000128000 95% Chebyshev (Mean, Sd)ug/kg128000
Benzo(a)pyrene 18700ug/kg 20000073200 97.5% KM (Chebyshev)ug/kg73200
Benzo(b)fluoranthene 19400ug/kg 21000079200 97.5% KM (Chebyshev)ug/kg79200
Benzo(k)fluoranthene 10600ug/kg 12000041000 97.5% KM (Chebyshev)ug/kg41000
Bis(2-ethylhexyl) phthalate 15600ug/kg 5700014600 95% KM (BCA)ug/kg14600
Chrysene 35600ug/kg 490000127000 95% Chebyshev (Mean, Sd)ug/kg127000
Dibenz(a,h)anthracene 1780ug/kg 140005460 97.5% KM (Chebyshev)ug/kg5460
Fluoranthene 51200ug/kg 630000180000 95% Chebyshev (Mean, Sd)ug/kg180000
Fluorene 26400ug/kg 540000231000 99% KM (Chebyshev)ug/kg231000
Indeno(1,2,3-c,d)pyrene 10600ug/kg 12000031400 95% Chebyshev (Mean, Sd)ug/kg31400
Naphthalene 61600ug/kg 1600000655000 99% KM (Chebyshev)ug/kg655000
Pyrene 60200ug/kg 670000387000 99% KM (Chebyshev)ug/kg387000
Aroclor 1248 128ug/kg 2200935 97.5% KM (Chebyshev)ug/kg935
Aroclor 1254 61.9ug/kg 590--- Max, detected in <3 samplesug/kg590
Aroclor 1260 318ug/kg 3400657 95% KM (t)ug/kg657
PCB Dioxin 19.5ng/kg 11145.3 95% Chebyshev (Mean, Sd) UCLng/kg45.3
PCB Nondioxin 2710000ng/kg 147000006440000 95% Chebyshev (Mean, Sd) UCLng/kg6440000
Total PCB Congeners 2810000ng/kg 151000006630000 95% Chebyshev (Mean, Sd) UCLng/kg6630000
Aluminum 13200mg/kg 1890014600 95% Student's-tmg/kg14600
Arsenic 12.1mg/kg 44.714.7 95% Modified-tmg/kg14.7
Cadmium 6.30mg/kg 20.29.99 95% Chebyshev (Mean, Sd)mg/kg9.99
Chromium 76.0mg/kg 13984.5 95% Modified-tmg/kg84.5
Cobalt 9.13mg/kg 14.811.0 95% KM (Percentile Bootstrap)mg/kg11
Copper 226mg/kg 790274 95% Modified-tmg/kg274
Iron 29200mg/kg 8700033600 95% Modified-tmg/kg33600
Lead 533mg/kg 42201200 95% Chebyshev (Mean, Sd)mg/kg1200
Manganese 276mg/kg 480306 95% Student's-tmg/kg306
PAGE 1 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA3 1/11/2011 12:00:36 PM
TABLE H-3.12
All Surface Sediment in Canal - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Sediment
Overflow Surface Sediment
Exposure Point
Sediment deposited in areas adjacent to Gowanus Canal associated with canal overflow
Vanadium 42.6mg/kg 61.245.9 95% Student's-tmg/kg45.9
PAGE 2 of 2\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA3 1/11/2011 12:00:36 PM
TABLE H-3.13
Surface Water in Canal, Wet Weather - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water
Overflow Surface Water
Exposure Point
Canal Overflow – Surface Water
1,4-dichlorobenzene 0.431ug/l 0.870.59 95% KM (Percentile Bootstrap)ug/l0.59
Benzene 0.563ug/l 2.900.835 95% KM (BCA)ug/l0.835
Chloroform 0.423ug/l 0.690.559 95% KM (Percentile Bootstrap)ug/l0.559
Ethylbenzene 0.451ug/l 2.600.868 95% KM (Chebyshev)ug/l0.868
Tetrachloroethylene(PCE) 16.5ug/l 40.024.4 95% KM (Chebyshev)ug/l24.4
Benzo(a)anthracene 0.0758ug/l 0.150.104 95% KM (Percentile Bootstrap)ug/l0.104
Benzo(a)pyrene 0.103ug/l 0.300.205 95% KM (Percentile Bootstrap)ug/l0.205
Benzo(b)fluoranthene 0.154ug/l 0.330.189 95% KM (Percentile Bootstrap)ug/l0.189
Dibenz(a,h)anthracene 0.0742ug/l 0.110.101 95% KM (Percentile Bootstrap)ug/l0.101
Indeno(1,2,3-c,d)pyrene 0.309ug/l 1.100.50 95% KM (Chebyshev)ug/l0.5
Naphthalene 0.136ug/l 1.400.364 95% KM (Percentile Bootstrap)ug/l0.364
Arsenic 14.9ug/l 26.216.6 95% Student's-tug/l16.6
Chromium 6.72ug/l 29.38.53 95% Modified-tug/l8.53
Cobalt 4.96ug/l 3.90--- Max, detected in <3 samplesug/l3.9
Lead 13.0ug/l 26.814.9 95% Student's-tug/l14.9
Selenium 29.3ug/l 64.633.6 95% Approximate Gammaug/l33.6
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRA.accdb\rptHHRA3 11/29/2010 4:26:00 PM
TABLE H-3.14
Blue Crab Edible Tissue from Canal - Exposure Point Concentration
Gowanus Canal Remedial Investigation
Brooklyn, New York
Chemical of Potential Concern
Maximum Detected
Value95 % UCL
StatisticUnits
Arithmetic Mean Distribution UnitsValue
Exposure Point Concentration
Scenario Timeframe:
Medium:
Exposure Medium:
Current/Future
Surface Water/Sediment
Fish and Crab Tissue
Exposure Point
Crab in Gowanus Canal
Benzo(a)anthracene 4.19ug/kg 21.07.80 95% KM (t) UCLug/kg7.8
Benzo(a)pyrene 6.49ug/kg 22.813.5 95% KM (Chebyshev) UCLug/kg13.5
Benzo(b)fluoranthene 4.36ug/kg 11.46.14 95% KM (BCA) UCLug/kg6.14
Dibenz(a,h)anthracene 3.24ug/kg 5.783.99 95% KM (Percentile Bootstrap) UCLug/kg3.99
Indeno(1,2,3-c,d)pyrene 8.75ug/kg 13.79.87 95% Student's-t UCLug/kg9.87
PCB Dioxin 3.38ng/kg 4.523.86 95% Student's-t UCLng/kg3.86
PCB Nondioxin 99800ng/kg 149000113000 95% Student's-t UCLng/kg113000
Total PCB Congeners 115000ng/kg 171000131000 95% Student's-t UCLng/kg131000
Arsenic 1.38mg/kg 1.801.53 95% Student's-t UCLmg/kg1.53
Copper 11.3mg/kg 14.112.1 95% Student's-t UCLmg/kg12.1
Mercury 0.153mg/kg 0.200.168 95% Student's-t UCLmg/kg0.168
PAGE 1 of 1\\managed.local\critigen\Projects\Gowanis395863\Database\GowanusStatsHHRATissue.accdb\rptHHRA3 1/13/2011 8:44:01 AM
Scenario Timeframe: Current/Future
Medium: SedimentExposure Medium: Surface Sediment
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Ingestion Recreational Adult
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Sed Ingestion Rate of Sediment 50 mg/day EPA, 1991, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 26 days/year (2)
ED Exposure Duration 24 years EPA, 1991
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Adolescent
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME Chronic Daily Intake (CDI) (mg/kg-day) =
(12-18 years) IR-Sed Ingestion Rate of Sediment 50 mg/day EPA, 1991, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 26 days/year (2)
ED Exposure Duration 6 years (5)
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 57 kg EPA, 1997, (6)
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME Chronic Daily Intake (CDI) (mg/kg-day) =
(1-6 years) IR-Sed Ingestion Rate of Sediment 100 mg/day EPA, 1991, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 26 days/year (2)
ED Exposure Duration 6 years EPA, 1991
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 15 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Dermal Recreational Adult
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME CDI (mg/kg-day) =
SA Skin Surface Area Available for Contact 6,925 cm2EPA, 2004, (3) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.3 mg/cm2-day EPA, 2004, (8) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 26 days/year (2)
ED Exposure Duration 24 years EPA, 1991
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
TABLE 4.1.RME
Page 1 of 30
Scenario Timeframe: Current/Future
Medium: SedimentExposure Medium: Surface Sediment
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
TABLE 4.1.RME
Dermal Recreational Adolescent
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME CDI (mg/kg-day) =
(12-18 years) SA Skin Surface Area Available for Contact 10,470 cm2EPA, 2004, (7) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 1997, (4) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 26 days/year (2)
ED Exposure Duration 6 years (5)
BW Body Weight 57 kg EPA, 1997, (6)
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Dermal Recreational Child
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME CDI (mg/kg-day) =
(1-6 years) SA Skin Surface Area Available for Contact 2,800 cm2EPA, 2004, (3) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 2004, (4) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 26 days/year (2)
ED Exposure Duration 6 years EPA, 1991
BW Body Weight 15 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Notes:
(1) Assumed sediment ingestion rate is equal to 1/2 of the incidental soil ingestion rate.
(2) Professional judgement, conservatively assumed recreational use of the canal would occur 1 day per week for one-half the year.
(3) SA includes head, hands, forearms, lower legs, and feet.
(4) Average adherence factor for children in wet soil.
(5) Professional Judgement assuming adolescents from 12 to 18 years of age.
(6) Body weight is average of the mean values for boys and girls for the ages 12 through 18.
(7) SA includes head, hands, arms, legs, and feet.
(8) Average adherence factor for reed gatherers (from Exhibit 3-3 of EPA, 2004).
Sources:
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 1997: Exposure Factors Handbook. EPA/ 600/P-95/Fa, Fb, and Fc.
EPA, 2000: Supplemental Guidance to RAGS: Region 4 Bulletins, Human Health Risk Assessment Bulletins. www.epa.gov/region4/waste/oftecser/healtbul.htm.
EPA, 2004: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual (Part E, Supplemental Guidance for Dermal Risk Assessment) Final. EPA/540/R/99/005.
Page 2 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Ingestion Recreational Adult Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW Ingestion Rate of Surface Water 0.05 l/hour EPA,1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 2.6 hr/day EPA, 1989, (2) 1/BW x 1/AT
EF Exposure Frequency 26 days/year (3)
ED Exposure Duration 24 years EPA, 1991
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Adolescent Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME Chronic Daily Intake (CDI) (mg/kg-day) =
(12-18 years) IR-SW Ingestion Rate of Surface Water 0.05 l/hour EPA,1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 2.6 hr/day EPA, 1989, (2) 1/BW x 1/AT
EF Exposure Frequency 26 days/year (3)
ED Exposure Duration 6 years (4)
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 57 kg EPA, 1991, (5)
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW Ingestion Rate of Surface Water 0.05 l/hour EPA,1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 2.6 hr/day EPA, 1989, (2) 1/BW x 1/AT
EF Exposure Frequency 26 days/year (3)
ED Exposure Duration 6 years EPA, 1991
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 15 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Dermal Recreational Adult Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME CDI (mg/kg-day) =
DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) =
τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 2.6 hr/day EPA, 1989, (2) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 18,000 cm2 EPA, 2004 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 26 days/year (3)ED Exposure Duration 24 years EPA, 1991 tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 70 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989 ((1 + 3B + 3B2)/(1+B)2)) x CF1 x CF2
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
TABLE 4.2.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Page 3 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.2.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Dermal Recreational Adolescent Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME CDI (mg/kg-day) =
(12-18 years) DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) =
τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 2.6 hr/day EPA, 1989, (2) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 15,758 cm2 EPA, 1997, (6) 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 26 days/year (3)ED Exposure Duration 6 years (4) tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 57 kg EPA, 1991, (5) FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989 ((1 + 3B + 3B2)/(1+B)2)) x CF1 x CF2
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Child Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME CDI (mg/kg-day) =
DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) =
τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 2.6 hr/day EPA, 1989, (2) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 6,600 cm2 EPA, 2004 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 26 days/year (3)ED Exposure Duration 6 years EPA, 1991 tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 15 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989 ((1 + 3B + 3B2)/(1+B)2)) x CF1 x CF2
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Notes:
(1) Ingestion rate of surface water for swimming.
(2) National average time spent swimming per swimming event.
(3) Professional judgement, conservatively assumed recreational use of the canal would occur 1 day per week for one-half the year.
(4) Professional Judgement assuming adolescents from 12 to 18 years of age.
(5) Body weight is average of the mean values for boys and girls for the ages 12 through 18.
(6) Average total body surface area of boys and girls from 12 to 18 years of age.
Page 4 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.2.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Sources:
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 1997: Exposure Factors Handbook. EPA/ 600/P-95/Fa, Fb, and Fc.
EPA, 2004: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual (Part E, Supplemental Guidance for Dermal Risk Assessment) Final. EPA/540/R/99/005.
Page 5 of 30
Scenario Timeframe: Current/Future
Medium: AirExposure Medium: Air
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Inhalation Recreational Adult Ambient air at canal level Cair Chemical Concentration in Air
Tables 3.4.RME
and 3.5.RME mg/m3Tables 3.4.RME and
3.5.RME Exposure Concentration (EC) (mg/m3) =
ET Exposure Time 2.6 hr/day EPA, 1989, (1) CA x ET x EF x ED x CF x 1/AT
EF Exposure Frequency 26 days/year (2)
ED Exposure Duration 24 years EPA, 1991
CF1 Conversion Factor 1 1/24 day/hr - -
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Adolescent Ambient air at canal level Cair Chemical Concentration in Air
Tables 3.4.RME
and 3.5.RME mg/m3Tables 3.4.RME and
3.5.RME Exposure Concentration (EC) (mg/m3) =
(12-18 years) ET Exposure Time 2.6 hr/day EPA, 1989, (1) CA x ET x EF x ED x CF x 1/AT
EF Exposure Frequency 26 days/year (2)
ED Exposure Duration 6 years (3)
CF1 Conversion Factor 1 1/24 day/hr - -
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child Ambient air at canal level Cair Chemical Concentration in Air
Tables 3.4.RME
and 3.5.RME mg/m3Tables 3.4.RME and
3.5.RME Exposure Concentration (EC) (mg/m3) =
ET Exposure Time 2.6 hr/day EPA, 1989, (1) CA x ET x EF x ED x CF x 1/AT
EF Exposure Frequency 26 days/year (2)
ED Exposure Duration 6 years EPA, 1991
CF1 Conversion Factor 1 1/24 day/hr - -
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Industrial Worker Adult Ambient air at street level Cair Chemical Concentration in Air
Tables 3.6.RME
and 3.7.RME mg/m3Tables 3.6.RME and
3.7.RME Exposure Concentration (EC) (mg/m3) =
EF Exposure Frequency 250 days/year EPA, 1991 CA x EF x ED x 1/AT
ED Exposure Duration 25 years EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 9,125 days EPA, 1989
Resident Adult Ambient air at street level Cair Chemical Concentration in Air
Tables 3.6.RME
and 3.7.RME mg/m3Tables 3.6.RME and
3.7.RME Exposure Concentration (EC) (mg/m3) =
ET Exposure Time 24 hr/day EPA, 1991 CA x ET x EF x ED x CF x 1/AT
EF Exposure Frequency 350 days/year EPA, 1991
ED Exposure Duration 24 years EPA, 1991
CF1 Conversion Factor 1 1/24 day/hr - -
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Child Ambient air at street level Cair Chemical Concentration in Air
Tables 3.6.RME
and 3.7.RME mg/m3Tables 3.6.RME and
3.7.RME Exposure Concentration (EC) (mg/m3) =
ET Exposure Time 24 hr/day EPA, 1991 CA x ET x EF x ED x CF x 1/AT
EF Exposure Frequency 350 days/year EPA, 1991
ED Exposure Duration 6 years EPA, 1991
CF1 Conversion Factor 1 1/24 day/hr - -
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
TABLE 4.3.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Page 6 of 30
Scenario Timeframe: Current/Future
Medium: AirExposure Medium: Air
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.3.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Inhalation Resident Child/Adult Ambient air at street level Cair Chemical Concentration in Air
Tables 3.6.RME
and 3.7.RME mg/m3Tables 3.6.RME and
3.7.RME Exposure Concentration (EC) (mg/m3) =
ET Exposure Time 24 hr/day EPA, 1991 CA x ET x EF x ED x CF x 1/AT
EF Exposure Frequency 350 days/year EPA, 1991
ED Exposure Duration 30 years EPA, 1991
CF1 Conversion Factor 1 1/24 day/hr - -
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
Notes:
(1) National average time spent swimming per swimming event.
(2) Professional judgement, conservatively assumed recreational use of the canal would occur 1 day per week for one-half the year.
(3) Professional Judgement assuming adolescents from 12 to 18 years of age.
Sources:
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
Page 7 of 30
Scenario Timeframe: Current/Future
Medium: Surface Water / Sediment
Exposure Medium: Fish and Crab Tissue
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Ingestion Angler Adult Striped Bass CFish Chemical Concentration in Fish
Tables 3.8.RME,
3.9.RME, and
3.10.RME mg/kg
Tables 3.8.RME,
3.9.RME, and
3.10.RME Chronic Daily Intake (CDI) (mg/kg-day) =
White Perch IR-Fish Ingestion of Fish 26 g/day EPA, 1997, (1) CFish x IR-Fish x FI x EF x ED x CF3 x 1/BW x 1/AT
Eel FI Fraction Ingested - fish specific unitless EPA, 2000
Striped Bass 0.47 unitless Connelly, 1992, (4)
White Perch 0.09 unitless Connelly, 1992, (4)
Eel 0.44 unitless Connelly, 1992, (4)
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 24 years EPA, 1991
CF3 Conversion Factor 3 0.001 kg/g - -
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Adolescent Striped Bass CFish Chemical Concentration in Fish
Tables 3.8.RME,
3.9.RME, and
3.10.RME mg/kg
Tables 3.8.RME,
3.9.RME, and
3.10.RME Chronic Daily Intake (CDI) (mg/kg-day) =
(12-18 years) White Perch IR-Fish Ingestion of Fish 17 g/day (2) CFish x IR-Fish x FI x EF x ED x CF3 x 1/BW x 1/AT
Eel FI Fraction Ingested - fish specific unitless EPA, 2000
Striped Bass 0.47 unitless Connelly, 1992, (4)
White Perch 0.09 unitless Connelly, 1992, (4)
Eel 0.44 unitless Connelly, 1992, (4)
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 6 years EPA, 1991
CF Conversion Factor 0.001 kg/g - -
BW Body Weight 57 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child Striped Bass CFish Chemical Concentration in Fish
Tables 3.8.RME,
3.9.RME, and
3.10.RME mg/kg
Tables 3.8.RME,
3.9.RME, and
3.10.RME Chronic Daily Intake (CDI) (mg/kg-day) =
White Perch IR-Fish Ingestion of Fish 9 g/day (3) CFish x IR-Fish x FI x EF x ED x CF3 x 1/BW x 1/AT
Eel FI Fraction Ingested - fish specific unitless EPA, 2000
Striped Bass 0.47 unitless Connelly, 1992, (4)
White Perch 0.09 unitless Connelly, 1992, (4)
Eel 0.44 unitless Connelly, 1992, (4)
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 6 years EPA, 1991
CF Conversion Factor 0.001 kg/g - -
BW Body Weight 15 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Table 4.4.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Page 8 of 30
Scenario Timeframe: Current/Future
Medium: Surface Water / Sediment
Exposure Medium: Fish and Crab Tissue
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Table 4.4.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Ingestion Angler Adult Blue Crab CFish Chemical Concentration in Crab Table 3.11.RME mg/kg Table 3.11.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Fish Ingestion of Crab 23 g/day Burger, 2002 CFish x IR-Sed x EF x ED x CF3 x 1/BW x 1/AT
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 24 years EPA, 1991
CF3 Conversion Factor 3 0.001 kg/g - -
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Adolescent Blue Crab CFish Chemical Concentration in Crab Table 3.11.RME mg/kg Table 3.11.RME Chronic Daily Intake (CDI) (mg/kg-day) =
(12-18 years) IR-Fish Ingestion of Crab 15 g/day (2) CFish x IR-Fish x EF x ED x CF3 x 1/BW x 1/AT
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 6 years EPA, 1991
CF3 Conversion Factor 3 0.001 kg/g - -
BW Body Weight 57 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child Blue Crab CFish Chemical Concentration in Crab Table 3.11.RME mg/kg Table 3.11.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Fish Ingestion of Crab 8 g/day (3) CFish x IR-Fish x EF x ED x CF3 x 1/BW x 1/AT
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 6 years EPA, 1991
CF Conversion Factor 0.001 kg/g - -
BW Body Weight 15 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Notes:
(1) 95th percentile recreational freshwater anglers fish ingestion rate.
(2) Ingestion rate assumed to be 2/3 the adult ingestion rate.
(3) There are no recreational fish ingestion values or crab ingestion values for children. Therefore, ingestion rate assumed to be 1/3 the adult ingestion rate.
(4) Bottom feeders percent consumption (44%) used to for eel, intermediate level percent consumption (47%) used for striped bass, and remaining percent (4%) used for white perch.
Sources:
Connelly, Nancy A., Barbara A. Knuth, and Carole A. Bisogni, 1992. Effects of the Health Advisory and Advisory Changes on Fishing Habits and Fish Consumption in New York Sport Fisheries.
Report for New York Sea Grant Institute Project No. R/FHD-2=PD. September.
Burger, 2002: Consumption Patterns and Why People Fish. Environmental Research Section A 90, 125-135.
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 1997: Exposure Factors Handbook. EPA/ 600/P-95/Fa, Fb, and Fc.
Page 9 of 30
Scenario Timeframe: Current/Future
Medium: SedimentExposure Medium: Overflow Surface Sediment
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Ingestion Industrial Worker Adult
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Sed Ingestion Rate of Sediment 100 mg/day EPA, 2002, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 9 days/year (2)
ED Exposure Duration 25 years EPA, 1991
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 9,125 days EPA, 1989
Residential Adult
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Sed Ingestion Rate of Sediment 100 mg/day EPA, 2002, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 9 days/year (2)
ED Exposure Duration 24 years EPA, 1991
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 70 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Child
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Sed Ingestion Rate of Sediment 200 mg/day EPA, 2002, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 9 days/year (2)
ED Exposure Duration 6 years EPA, 1991
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 15 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
TABLE 4.5.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Page 10 of 30
Scenario Timeframe: Current/Future
Medium: SedimentExposure Medium: Overflow Surface Sediment
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.5.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Ingestion Residential Child/Adult
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Sed Ingestion Rate of Sediment-adjusted 114.3 mg-year/kg-day calculated CSed x IR-Sed x EF x CF x 1/AT
IR-Sedc Ingestion Rate of Sediment, child 200 mg/day EPA, 1991, (1)
IR-Seda Ingestion Rate of Sediment, adult 100 mg/day EPA, 1991, (1)
EF Exposure Frequency 9 days/year (2)
EDc Exposure Duration , child 6 years EPA, 1991 IR-Sed = (EDc x IR-Sedc/ BWc) +
EDa Exposure Duration, adult 24 years EPA, 1991 (EDa x IR-Seda/BWa)
CF Conversion Factor 0.000001 kg/mg - -
BWc Body Weight, child 15 kg EPA, 1991
BWa Body Weight, adult 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
Dermal Industrial Worker Adult
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME CDI (mg/kg-day) =
SA Skin Surface Area Available for Contact 3,300 cm2EPA, 2004, (3) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 2004, (5) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 9 days/year (2)
ED Exposure Duration 25 years EPA, 1991
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 9,125 days EPA, 1989
Residential Adult
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME CDI (mg/kg-day) =
SA Skin Surface Area Available for Contact 5,700 cm2EPA, 2004, (3) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 2004, (4) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 9 days/year (2)
ED Exposure Duration 24 years EPA, 1991
BW Body Weight 70 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Page 11 of 30
Scenario Timeframe: Current/Future
Medium: SedimentExposure Medium: Overflow Surface Sediment
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.5.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Dermal Residential Child
areas adjacent to
Gowanus Canal
associated with canal CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME CDI (mg/kg-day) =
SA Skin Surface Area Available for Contact 2,800 cm2EPA, 2004, (3) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 2004, (4) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 9 days/year (2)
ED Exposure Duration 6 years EPA, 1991
BW Body Weight 15 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child/Adult
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME CDI (mg/kg-day) =
SAc
Skin Surface Area Available for Contact,
child 2,800 cm2EPA, 2004, (3) CSed x SA x DABS x CF x EF x 1/AT
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 2004, (4)
EDc Exposure Duration, child 6 years EPA, 1991 SA = ((EDc x SAc/BWc) x SSAF) +
BWc Body Weight, child 15 kg EPA, 1991 ((EDa x SAa/BWa) x SSAF)
SAa
Skin Surface Area Available for Contact,
adult 5,700 cm2EPA, 2004, (3)
EDa Exposure Duration , adult 24 years EPA, 1991
BWa Body Weight ,adult 70 kg EPA, 1991
SA Skin Surface Area adjusted 615 cm2-year/kg-day calculated
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 9 days/year (2)
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
Notes:
(1) Assumed sediment ingestion rate is equal to the incidental soil ingestion rate.
(2) Professional judgement, conservatively assumes canal overflows 3 times a year, and remains on surface 3 days per each overflow event.
(3) SA includes head, hands, forearms, lower legs, and feet (for child only) for residents and head, hands, and forearms for industrial worker.
(4) Average adherence factor for children in wet soil.
(5) Adherence factor for adult industrial worker from Exhibit 3-5 of EPA, 2004.
Sources:
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 2002: Supplemental Guidance for Developing Soil Screening Levels for Superfund Sites. OSWER 9355.4-24.
EPA, 2004: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual (Part E, Supplemental Guidance for Dermal Risk Assessment) Final. EPA/540/R/99/005.
Page 12 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Overflow Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Ingestion Industrial Worker Adult
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW Ingestion Rate of Surface Water 0.05 l/hour EPA, 1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 8 hr/day (2) 1/BW x 1/AT
EF Exposure Frequency 9 days/year (5)
ED Exposure Duration 25 years EPA, 1991
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Resident Adult
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW Ingestion Rate of Surface Water 0.05 l/hour EPA, 1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 2.6 hr/day EPA, 1989, (3) 1/BW x 1/AT
EF Exposure Frequency 9 days/year (5)
ED Exposure Duration 24 years EPA, 1991
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 70 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Child
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW Ingestion Rate of Surface Water 0.05 l/hour EPA, 1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 2.6 hr/day EPA, 1989, (3) 1/BW x 1/AT
EF Exposure Frequency 9 days/year (5)
ED Exposure Duration 6 years EPA, 1991
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 15 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child/Adult
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW-Adj Ingestion Rate of Surface Water, age-adjusted 0.037 l-year/kg-hour calculated CSW x IR-SW-adj x ET x EF x CF1 x 1/AT
IR-SWc Ingestion Rate of Surface Water, child 0.05 l/hour EPA, 1989, (1)
IR-Swa Ingestion Rate of Surface Water, adult 0.05 l/hour EPA, 1989, (1)
ET Exposure Time 2.6 hr/day EPA, 1989, (3) IR-W-Adj (liter-year/kg-hour) =
EF Exposure Frequency 9 days/year (5) (EDc x IR-SWc/BWc) + (EDa x IR-SWa/BWa)
EDc Exposure Duration, chiild 6 years EPA, 1991
EDa Exposure Duration, adult 24 years EPA, 1991
CF1 Conversion Factor 1 0.001 mg/µg - -
BWc Body Weight, child 15 kg EPA, 1991
BWa Body Weight, adult 70 kg EPA, 1991AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
TABLE 4.6.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Page 13 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Overflow Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.6.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Dermal Industrial Worker Adult
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME CDI (mg/kg-day) =
DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) = τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 8 hr/day (2) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 5,700 cm2EPA, 2004, (4) 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 9 days/year (5)ED Exposure Duration 25 years EPA, 1991 tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 70 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989 ((1 + 3B + 3B2)/(1+B)2)) x CF1 x CF2
AT-N Averaging Time (Non-Cancer) 9,125 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Residential Adult
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME CDI (mg/kg-day) =
DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) = τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 2.6 hr/day EPA, 1989, (3) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 5,700 cm2EPA, 2004, (4) 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 9 days/year (5)ED Exposure Duration 24 years EPA, 1991 tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 70 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Page 14 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Overflow Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.6.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Dermal Residential Child
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME CDI (mg/kg-day) =
DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) = τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 2.6 hr/day EPA, 1989, (3) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 2,800 cm2EPA, 2004, (4) 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 9 days/year (5)ED Exposure Duration 6 years EPA, 1991 tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 15 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Dermal Residential Child/Adult
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME CDI (mg/kg-day) =
DA-Adj Dermally Absorbed Dose, Age-adjusted calculated mg-year/event-kg calculated DA-Adj x EF x 1/AT
DAevent-A Dermally Absorbed Dose per Event, adult calculated mg/cm2-event calculated
DAevent-C Dermally Absorbed Dose per Event, adult calculated mg/cm2-event calculated DA-Adj = (DAevent-A x SAa x EDa x 1/BWa)
FA Fraction absorbed water chemical specific dimensionless EPA, 2004 + (DAevent-C x SAc x EDc x 1/BWc)
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004
τ Lag Time chemical specific hr/event EPA, 2004
t* Time to Reach Steady-state chemical specific hours EPA, 2004 Inorganics: DAevent (mg/cm2-event) = B Epidermis chemical specific dimensionless EPA, 2004 Kp x CW x tevent x CF1 x CF2
tevent Event Time 2.6 hr/day EPA, 1989, (3)
SAc Skin Surface Area Available for Contact, child 2,800 cm2EPA, 2004, (4) Organics :
SAa Skin Surface Area Available for Contact, adult 5,700 cm2EPA, 2004, (4) tevent<t*: DAevent (mg/cm2-event) =
EV Event Frequency 1 events/day EPA, 2004 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EF Exposure Frequency 9 days/year (5) x CF1 x CF2
EDc Exposure Duration, child 6 years EPA, 1991
EDa Exposure Duration, adult 24 years EPA, 1991BWc Body Weight, child 15 kg EPA, 1991 tevent>t*: DAevent (mg/cm2-event) =
BWa Body Weight, adult 70 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989 ((1 + 3B + 3B2)/(1+B)2)) x CF1 x CF2
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Notes:
(1) Assumed ingestion rate for canal overflow water would be 1/2 of mean water ingestion rate for adults for exposure scenarios involving swimming activities.
(2) Professional judgement, conservatively assumes industrial receptors will contact overflow ponded surface water 8 hours per day.
(3) Professional judgement, conservatively assumes residential receptor will contact overflow surface water for the same exposure time as the national average time spent swimming per swimming event.
(4) SA includes head, hands, forearms, lower legs, and feet (for child only).
(5) Professional judgement, conservatively assumes canal overflows 3 times a year, and remains on surface 3 days per each overflow event.
Page 15 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Overflow Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.6.RME
VALUES USED FOR DAILY INTAKE CALCULATIONS
REASONABLE MAXIMUM EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Sources:
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 2004: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual (Part E, Supplemental Guidance for Dermal Risk Assessment) Final. EPA/540/R/99/005.
Page 16 of 30
Scenario Timeframe: Current/Future
Medium: SedimentExposure Medium: Surface Sediment
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Ingestion Recreational Adult
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Sed Ingestion Rate of Sediment 25 mg/day EPA, 1997, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 13 days/year (2)
ED Exposure Duration 3 years EPA, 1997 (7)
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Adolescent
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME Chronic Daily Intake (CDI) (mg/kg-day) =
(12-18 years) IR-Sed Ingestion Rate of Sediment 25 mg/day EPA, 1997, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 13 days/year (2)
ED Exposure Duration 3 years EPA, 1997 (7)
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 57 kg EPA, 1997, (5)
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Child
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME Chronic Daily Intake (CDI) (mg/kg-day) =
(1-6 years) IR-Sed Ingestion Rate of Sediment 50 mg/day EPA, 1997, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 13 days/year (2)
ED Exposure Duration 3 years EPA, 1997 (7)
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 15 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Dermal Recreational Adult
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME CDI (mg/kg-day) =
SA Skin Surface Area Available for Contact 6,925 cm2EPA, 2004, (3) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 2004, (4) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 13 days/year (2)
ED Exposure Duration 3 years EPA, 1997 (7)
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
TABLE 4.1.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Page 17 of 30
Scenario Timeframe: Current/Future
Medium: SedimentExposure Medium: Surface Sediment
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.1.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Dermal Recreational Adolescent
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME CDI (mg/kg-day) =
(12-18 years) SA Skin Surface Area Available for Contact 10,470 cm2EPA, 2004, (6) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 1997, (4) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 13 days/year (2)
ED Exposure Duration 3 years EPA, 1997 (7)
BW Body Weight 57 kg EPA, 1997, (5)
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Dermal Recreational Child
Exposed and near
shore sediment in
Gowanus Canal CSed Chemical Concentration in Sediment Table 3.1.RME mg/kg Table 3.1.RME CDI (mg/kg-day) =
(1-6 years) SA Skin Surface Area Available for Contact 2,800 cm2EPA, 2004, (3) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 2004, (4) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 13 days/year (2)
ED Exposure Duration 3 years EPA, 1997 (7)
BW Body Weight 15 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Notes:
(1) Assumed CTE sediment ingestion rate is equal to 1/2 of the RME sediment ingestion rate, or 1/2 of the CTE incidental soil ingestion rate.
(2) Professional judgement, assuming 1/2 the RME value, or recreational use of the canal 1 day per week for one-quarter of the year.
(3) SA includes head, hands, forearms, lower legs, and feet.
(4) Average adherence factor for children in wet soil.
(5) Body weight is average of the mean values for boys and girls for the ages 12 through 18.
(6) SA includes head, hands, arms, legs, and feet.
(7) Based on 9 years, the 50th percentile of time at a single residence, divided into three years for each receptor age range.
Sources:
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 1997: Exposure Factors Handbook. EPA/ 600/P-95/Fa, Fb, and Fc.
EPA, 2000: Supplemental Guidance to RAGS: Region 4 Bulletins, Human Health Risk Assessment Bulletins. www.epa.gov/region4/waste/oftecser/healtbul.htm.
EPA, 2004: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual (Part E, Supplemental Guidance for Dermal Risk Assessment) Final. EPA/540/R/99/005.
Page 18 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Ingestion Recreational Adult Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW Ingestion Rate of Surface Water 0.025 l/hour EPA,1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 1.3 hr/day EPA, 1989, (2) 1/BW x 1/AT
EF Exposure Frequency 13 days/year (3)
ED Exposure Duration 3 years EPA, 1997 (4)
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Adolescent Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME Chronic Daily Intake (CDI) (mg/kg-day) =
(12-18 years) IR-SW Ingestion Rate of Surface Water 0.025 l/hour EPA,1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 1.3 hr/day EPA, 1989, (2) 1/BW x 1/AT
EF Exposure Frequency 13 days/year (3)
ED Exposure Duration 3 years EPA, 1997 (4)
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 57 kg EPA, 1991, (5)
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Child Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW Ingestion Rate of Surface Water 0.025 l/hour EPA,1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 1.3 hr/day EPA, 1989, (2) 1/BW x 1/AT
EF Exposure Frequency 13 days/year (3)
ED Exposure Duration 3 years EPA, 1997 (4)
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 15 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Dermal Recreational Adult Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME CDI (mg/kg-day) =
DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) =
τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 1.3 hr/day EPA, 1989, (2) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 18,000 cm2 EPA, 2004 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 13 days/year (3)ED Exposure Duration 3 years EPA, 1997 (4) tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 70 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989 ((1 + 3B + 3B2)/(1+B)2)) x CF1 x CF2
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
TABLE 4.2.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Page 19 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.2.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Dermal Recreational Adolescent Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME CDI (mg/kg-day) =
(12-18 years) DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) =
τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 1.3 hr/day EPA, 1989, (2) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 15,758 cm2 EPA, 1997, (6) 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 13 days/year (3)ED Exposure Duration 3 years EPA, 1997 (4) tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 57 kg EPA, 1991, (5) FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989 ((1 + 3B + 3B2)/(1+B)2)) x CF1 x CF2
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Child Gowanus Canal CSW Chemical Concentration in Surface Water
Tables 3.2.RME
and 3.3.RME µg/l
Tables 3.2.RME and
3.3.RME CDI (mg/kg-day) =
DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) =
τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 1.3 hr/day EPA, 1989, (2) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 6,600 cm2 EPA, 2004 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 13 days/year (3)ED Exposure Duration 3 years EPA, 1997 (4) tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 15 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989 ((1 + 3B + 3B2)/(1+B)2)) x CF1 x CF2
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Notes:
(1) Professional judgement, assuming 1/2 the RME value, or 1/2 the ingestion rate of surface water for swimming.
(2) 1/2 the RME value, equal to 1/2 the national average time spent swimming per swimming event.
(3) Professional judgement, assuming 1/2 the RME value, or recreational use of the canal 1 day per week for one-quarter of the year.
(4) Based on 9 years, the 50th percentile of time at a single residence, divided into three years for each receptor age range.
(5) Body weight is average of the mean values for boys and girls for the ages 12 through 18.
(6) Average total body surface area of boys and girls from 12 to 18 years of age.
Page 20 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.2.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Sources:
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 1997: Exposure Factors Handbook. EPA/ 600/P-95/Fa, Fb, and Fc.
EPA, 2004: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual (Part E, Supplemental Guidance for Dermal Risk Assessment) Final. EPA/540/R/99/005.
Page 21 of 30
Scenario Timeframe: Current/Future
Medium: AirExposure Medium: Air
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Inhalation Resident Adult Ambient air at street level Cair Chemical Concentration in Air
Tables 3.6.RME
and 3.7.RME mg/m3Tables 3.6.RME and
3.7.RME Exposure Concentration (EC) (mg/m3) =
ET Exposure Time 24 hr/day EPA, 1991 CA x ET x EF x ED x CF x 1/AT
EF Exposure Frequency 234 days/year EPA, 1993
ED Exposure Duration 3 years EPA, 2004
CF1 Conversion Factor 1 1/24 day/hr - -
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Child Ambient air at street level Cair Chemical Concentration in Air
Tables 3.6.RME
and 3.7.RME mg/m3Tables 3.6.RME and
3.7.RME Exposure Concentration (EC) (mg/m3) =
ET Exposure Time 24 hr/day EPA, 1991 CA x ET x EF x ED x CF x 1/AT
EF Exposure Frequency 234 days/year EPA, 1993
ED Exposure Duration 6 years EPA, 1991
CF1 Conversion Factor 1 1/24 day/hr - -
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child/Adult Ambient air at street level Cair Chemical Concentration in Air
Tables 3.6.RME
and 3.7.RME mg/m3Tables 3.6.RME and
3.7.RME Exposure Concentration (EC) (mg/m3) =
ET Exposure Time 24 hr/day EPA, 1991 CA x ET x EF x ED x CF x 1/AT
EF Exposure Frequency 234 days/year EPA, 1993
ED Exposure Duration 9 years EPA, 2004
CF1 Conversion Factor 1 1/24 day/hr - -
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
Notes:
(1) Professional judgement, assuming 1/2 the RME value, or 1/2 the ingestion rate of surface water for swimming.
(2) Professional judgement, conservatively assumed recreational use of the canal would occur 1 day per week for one-half the year.
(3) Professional Judgement assuming adolescents from 12 to 18 years of age.
Sources:
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 1993: Superfund's Standard Default Exposure Factors for the Central Tendency and Reasonable Maximum Exposure.
EPA, 2004: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual (Part E, Supplemental Guidance for Dermal Risk Assessment) Final. EPA/540/R/99/005.
TABLE 4.3.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Page 22 of 30
Scenario Timeframe: Current/Future
Medium: Surface Water / Sediment
Exposure Medium: Fish and Crab Tissue
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Ingestion Angler Adult Striped Bass CFish Chemical Concentration in Fish
Tables 3.8.RME, 3.9.RME, and
3.10.RME mg/kg
Tables 3.8.RME, 3.9.RME, and
3.10.RME Chronic Daily Intake (CDI) (mg/kg-day) =
White Perch IR-Fish Ingestion of Fish 8 g/day EPA, 1997, (1) CFish x IR-Fish x PCF x FI x EF x ED x CF3 x 1/BW x 1/AT
Eel PCF Preparation/cooking loss factor chem specific EPA, 2000
FI Fraction Ingested - fish specific unitless EPA, 2000
Striped Bass 0.47 unitless NYS, 1991, (4)
White Perch 0.09 unitless NYS, 1991, (4)
Eel 0.44 unitless NYS, 1991, (4)
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 3 years EPA, 1997 (6)
CF3 Conversion Factor 3 0.001 kg/g - -
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Adolescent Striped Bass CFish Chemical Concentration in Fish
Tables 3.8.RME, 3.9.RME, and
3.10.RME mg/kg
Tables 3.8.RME, 3.9.RME, and
3.10.RME Chronic Daily Intake (CDI) (mg/kg-day) =
(12-18 years) White Perch IR-Fish Ingestion of Fish 5.3 g/day (2) CFish x IR-Fish x PCF x FI x EF x ED x CF3 x 1/BW x 1/AT
Eel PCF Preparation/cooking loss factor chem specific EPA, 2000
FI Fraction Ingested - fish specific unitless EPA, 2000
Striped Bass 0.47 unitless NYS, 1991, (4)
White Perch 0.09 unitless NYS, 1991, (4)
Eel 0.44 unitless NYS, 1991, (4)
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 3 years EPA, 1997 (6)
CF Conversion Factor 0.001 kg/g - -
BW Body Weight 57 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Child Striped Bass CFish Chemical Concentration in Fish
Tables 3.8.RME, 3.9.RME, and
3.10.RME mg/kg
Tables 3.8.RME, 3.9.RME, and
3.10.RME Chronic Daily Intake (CDI) (mg/kg-day) =
White Perch IR-Fish Ingestion of Fish 2.7 g/day (3) CFish x IR-Fish x PCF x FI x EF x ED x CF3 x 1/BW x 1/AT
Eel PCF Preparation/cooking loss factor chem specific EPA, 2000
FI Fraction Ingested - fish specific unitless EPA, 2000
Striped Bass 0.47 unitless NYS, 1991, (4)
White Perch 0.09 unitless NYS, 1991, (4)
Eel 0.44 unitless NYS, 1991, (4)
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 3 years EPA, 1997 (6)
CF Conversion Factor 0.001 kg/g - -
BW Body Weight 15 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Table 4.4.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Page 23 of 30
Scenario Timeframe: Current/Future
Medium: Surface Water / Sediment
Exposure Medium: Fish and Crab Tissue
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Table 4.4.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Ingestion Angler Adult Blue Crab CFish Chemical Concentration in Crab Table 3.11.RME mg/kg Table 3.11.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Fish Ingestion of Crab 16 g/day Burger, 2002 CFish x IR-Fish x PCF x EF x ED x CF3 x 1/BW x 1/AT
PCF Preparation/cooking loss factor chem specific EPA, 2000
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 3 years EPA, 1997 (6)
CF3 Conversion Factor 3 0.001 kg/g - -
BW Body Weight 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Adolescent Blue Crab CFish Chemical Concentration in Crab Table 3.11.RME mg/kg Table 3.11.RME Chronic Daily Intake (CDI) (mg/kg-day) =
(12-18 years) IR-Fish Ingestion of Crab 10.7 g/day (2) CFish x IR-Fish x PCF x EF x ED x CF3 x 1/BW x 1/AT
PCF Preparation/cooking loss factor chem specific EPA, 2000
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 3 years EPA, 1997 (6)
CF3 Conversion Factor 3 0.001 kg/g - -
BW Body Weight 57 kg/g EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Child Blue Crab CFish Chemical Concentration in Crab Table 3.11.RME mg/kg Table 3.11.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Fish Ingestion of Crab 5.3 g/day (3) CFish x IR-Fish x PCF x EF x ED x CF3 x 1/BW x 1/AT
PCF Preparation/cooking loss factor chem specific EPA, 2000
EF Exposure Frequency 365 days/year EPA, 1997
ED Exposure Duration 3 years EPA, 1997 (6)
CF Conversion Factor 0.001 kg/g - -
BW Body Weight 15 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Notes:
(1) Mean recreational freshwater anglers fish ingestion rate.
(2) Ingestion rate assumed to be 2/3 the adult ingestion rate.
(3) There are no recreational fish ingestion values or crab ingestion values for children. Therefore, ingestion rate assumed to be 1/3 the adult ingestion rate.
(4) Bottom feeders percent consumption (44%) used to for eel, intermediate level percent consumption (47%) used for striped bass, and remaining percent (4%) used for white perch.
(5) Average yearly crab ingestion rate.
(6) Based on 9 years, the 50th percentile of time at a single residence, divided into three years for each receptor age range.
Sources:
Burger, 2002: Consumption Patterns and Why People Fish. Environmental Research Section A 90, 125-135.
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 1997: Exposure Factors Handbook. EPA/ 600/P-95/Fa, Fb, and Fc.
NYS, 1991: New York State Angler reported fish consumpiton preferences.
Page 24 of 30
Scenario Timeframe: Current/Future
Medium: SedimentExposure Medium: Overflow Surface Sediment
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Ingestion Residential Adult
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Sed Ingestion Rate of Sediment 50 mg/day EPA, 1997, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 4.5 days/year (2)
ED Exposure Duration 3 years EPA, 1997
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 70 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Child
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Sed Ingestion Rate of Sediment 100 mg/day EPA, 1997, (1) CSed x IR-Sed x EF x ED x CF x 1/BW x 1/AT
EF Exposure Frequency 4.5 days/year (2)
ED Exposure Duration 6 years EPA, 1991
CF Conversion Factor 0.000001 kg/mg - -
BW Body Weight 15 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child/Adult
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-Sed Ingestion Rate of Sediment-adjusted 42.1 mg-year/kg-day calculated CSed x IR-Sed x EF x CF x 1/AT
IR-Sedc Ingestion Rate of Sediment, child 100 mg/day EPA, 1991, (1)
IR-Seda Ingestion Rate of Sediment, adult 50 mg/day EPA, 1991, (1)
EF Exposure Frequency 4.5 days/year (2)
EDc Exposure Duration , child 6 years EPA, 1991 IR-Sed = (EDc x IR-Sedc/ BWc) +
EDa Exposure Duration, adult 3 years EPA, 1997 (EDa x IR-Seda/BWa)
CF Conversion Factor 0.000001 kg/mg - -
BWc Body Weight, child 15 kg EPA, 1991
BWa Body Weight, adult 70 kg EPA, 1991
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
TABLE 4.5.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Page 25 of 30
Scenario Timeframe: Current/Future
Medium: SedimentExposure Medium: Overflow Surface Sediment
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.5.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Dermal Residential Adult
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME CDI (mg/kg-day) =
SA Skin Surface Area Available for Contact 5,700 cm2EPA, 2004, (3) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 2004, (4) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 4.5 days/year (2)
ED Exposure Duration 3 years EPA, 1997
BW Body Weight 70 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
Child
areas adjacent to
Gowanus Canal
associated with canal CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME CDI (mg/kg-day) =
SA Skin Surface Area Available for Contact 2,800 cm2EPA, 2004, (3) CSed x SA x SSAF x DABS x CF x EF x
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 2004, (4) ED x 1/BW x 1/AT
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 4.5 days/year (2)
ED Exposure Duration 6 years EPA, 1991
BW Body Weight 15 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child/Adult
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow CSed Chemical Concentration in Sediment Table 3.12.RME mg/kg Table 3.12.RME CDI (mg/kg-day) =
SAc
Skin Surface Area Available for Contact,
child 2,800 cm2EPA, 2004, (3) CSed x SA x DABS x CF x EF x 1/AT
SSAF Soil to Skin Adherence Factor 0.2 mg/cm2-day EPA, 2004, (4)
EDc Exposure Duration, child 6 years EPA, 1991 SA = ((EDc x SAc/BWc) x SSAF) +
BWc Body Weight, child 15 kg EPA, 1991 ((EDa x SAa/BWa) x SSAF)
SAa
Skin Surface Area Available for Contact,
adult 5,700 cm2EPA, 2004, (3)
EDa Exposure Duration , adult 3 years EPA, 1997
BWa Body Weight ,adult 70 kg EPA, 1991
SA Skin Surface Area adjusted 273 cm2-year/kg-day calculated
DABS Dermal Absorption Factor Solids chem specific -- EPA, 2004
CF Conversion Factor 0.000001 kg/mg - -
EF Exposure Frequency 4.5 days/year (2)
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
Page 26 of 30
Scenario Timeframe: Current/Future
Medium: SedimentExposure Medium: Overflow Surface Sediment
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.5.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Notes:
(1) Assumed CTE sediment ingestion rate is equal to the CTE incidental soil ingestion rate.
(2) Professional judgement, assumed equal to 1/2 RME value.
(3) SA includes head, hands, forearms, lower legs, and feet (for child only).
(4) Average adherence factor for children in wet soil.
Sources:
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 1997: Exposure Factors Handbook. EPA/ 600/P-95/Fa, Fb, and Fc.
EPA, 2004: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual (Part E, Supplemental Guidance for Dermal Risk Assessment) Final. EPA/540/R/99/005.
Page 27 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Overflow Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
Ingestion Resident Adult
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW Ingestion Rate of Surface Water 0.025 l/hour EPA, 1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 1.3 hr/day EPA, 1989, (2) 1/BW x 1/AT
EF Exposure Frequency 4.5 days/year (4)
ED Exposure Duration 3 years EPA, 1997
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 70 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 8,760 days EPA, 1989
Child
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW Ingestion Rate of Surface Water 0.025 l/hour EPA, 1989, (1) CSW x IR-SW x ET x EF x ED x CF1 x
ET Exposure Time 1.3 hr/day EPA, 1989, (2) 1/BW x 1/AT
EF Exposure Frequency 4.5 days/year (4)
ED Exposure Duration 6 years EPA, 1991
CF1 Conversion Factor 1 0.001 mg/µg - -
BW Body Weight 15 kg EPA, 1991
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
Child/Adult
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME Chronic Daily Intake (CDI) (mg/kg-day) =
IR-SW-Adj Ingestion Rate of Surface Water, age-adjusted 0.011 l-year/kg-hour calculated CSW x IR-SW-adj x ET x EF x CF1 x 1/AT
IR-SWc Ingestion Rate of Surface Water, child 0.025 l/hour EPA, 1989, (1)
IR-Swa Ingestion Rate of Surface Water, adult 0.025 l/hour EPA, 1989, (1)
ET Exposure Time 1.3 hr/day EPA, 1989, (2) IR-W-Adj (liter-year/kg-hour) =
EF Exposure Frequency 4.5 days/year (4) (EDc x IR-SWc/BWc) + (EDa x IR-SWa/BWa)
EDc Exposure Duration, chiild 6 years EPA, 1991
EDa Exposure Duration, adult 3 years EPA, 1997
CF1 Conversion Factor 1 0.001 mg/µg - -
BWc Body Weight, child 15 kg EPA, 1991
BWa Body Weight, adult 70 kg EPA, 1991AT-C Averaging Time (Cancer) 25,550 days EPA, 1989
TABLE 4.6.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Page 28 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Overflow Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.6.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Dermal Residential Adult
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME CDI (mg/kg-day) =
DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) = τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 1.3 hr/day EPA, 1989, (2) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 5,700 cm2EPA, 2004, (3) 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 4.5 days/year (4)ED Exposure Duration 3 years EPA, 1997 tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 70 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-N Averaging Time (Non-Cancer) 1,095 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Child
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME CDI (mg/kg-day) =
DAevent Dermally Absorbed Dose per Event calculated mg/cm2-event calculated DAevent x SA x EV x EF x ED x 1/BW x 1/AT
FA Fraction absorbed water chemical specific dimensionless EPA, 2004
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004 Inorganics: DAevent (mg/cm2-event) = τ Lag Time chemical specific hr/event EPA, 2004 Kp x CW x tevent x CF1 x CF2
t* Time to Reach Steady-state chemical specific hours EPA, 2004
B Epidermis chemical specific dimensionless EPA, 2004 Organics :tevent Event Time 1.3 hr/day EPA, 1989, (2) tevent<t*: DAevent (mg/cm2-event) =
SA Skin Surface Area Available for Contact 2,800 cm2EPA, 2004, (3) 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EV Event Frequency 1 events/day EPA, 2004 x CF1 x CF2
EF Exposure Frequency 4.5 days/year (4)ED Exposure Duration 6 years EPA, 1991 tevent>t*: DAevent (mg/cm2-event) =
BW Body Weight 15 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-N Averaging Time (Non-Cancer) 2,190 days EPA, 1989
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Page 29 of 30
Scenario Timeframe: Current/Future
Medium: Surface WaterExposure Medium: Overflow Surface Water
Exposure Route Receptor Population Receptor Age Exposure Point Parameter Parameter Definition Value Units Rationale/ Intake Equation/
Code Reference Model Name
TABLE 4.6.CTE
VALUES USED FOR DAILY INTAKE CALCULATIONS
CENTRAL TENDENCY EXPOSUREGowanus Canal Remedial Investigation, Brooklyn, New York
Dermal Residential Child/Adult
Canal Overflow - Surface
Water CSW Chemical Concentration in Surface Water Table 3.13.RME µg/l Table 3.13.RME CDI (mg/kg-day) =
DA-Adj Dermally Absorbed Dose, Age-adjusted calculated mg-year/event-kg calculated DA-Adj x EF x 1/AT
DAevent-A Dermally Absorbed Dose per Event, adult calculated mg/cm2-event calculated
DAevent-C Dermally Absorbed Dose per Event, adult calculated mg/cm2-event calculated DA-Adj = (DAevent-A x SAa x EDa x 1/BWa)
FA Fraction absorbed water chemical specific dimensionless EPA, 2004 + (DAevent-C x SAc x EDc x 1/BWc)
Kp Permeability Coefficient chemical specific cm/hr EPA, 2004
τ Lag Time chemical specific hr/event EPA, 2004
t* Time to Reach Steady-state chemical specific hours EPA, 2004 Inorganics: DAevent (mg/cm2-event) = B Epidermis chemical specific dimensionless EPA, 2004 Kp x CW x tevent x CF1 x CF2
tevent Event Time 1.3 hr/day EPA, 1989, (2)
SAc Skin Surface Area Available for Contact, child 2,800 cm2EPA, 2004, (3) Organics :
SAa Skin Surface Area Available for Contact, adult 5,700 cm2EPA, 2004, (3) tevent<t*: DAevent (mg/cm2-event) =
EV Event Frequency 1 events/day EPA, 2004 2 x FA x Kp x CW x (sqrt((6 x τ x tevent)/π))
EF Exposure Frequency 4.5 days/year (4) x CF1 x CF2
EDc Exposure Duration, child 6 years EPA, 1991
EDa Exposure Duration, adult 3 years EPA, 1997BWc Body Weight, child 15 kg EPA, 1991 tevent>t*: DAevent (mg/cm2-event) =
BWa Body Weight, adult 70 kg EPA, 1991 FA x Kp x CW x ( tevent/(1+B) + 2 x τ x
AT-C Averaging Time (Cancer) 25,550 days EPA, 1989 ((1 + 3B + 3B2)/(1+B)2)) x CF1 x CF2
CF1 Conversion Factor 1 0.001 mg/µg - -
CF2 Conversion Factor 2 0.001 l/cm3- -
Notes:
(1) Professional judgement, assuming 1/2 the RME value, or 1/2 the ingestion rate of surface water for swimming.
(2) 1/2 the RME value, equal to 1/2 the national average time spent swimming per swimming event.
(3) SA includes head, hands, forearms, lower legs, and feet (for child only).
(4) Professional judgement, assumed equal to 1/2 RME value.
Sources:
EPA, 1989: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual, Part A. OERR. EPA/540/1-89/002.
EPA, 1991: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual - Supplemental Guidance, Standard Default Exposure Factors. Interim Final. OSWER Directive 9285.6-03.
EPA, 2004: Risk Assessment Guidance for Superfund. Vol.1: Human Health Evaluation Manual (Part E, Supplemental Guidance for Dermal Risk Assessment) Final. EPA/540/R/99/005.
Page 30 of 30
TABLE 5.1
NON-CANCER TOXICITY DATA -- ORAL/DERMAL
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Chronic/ Oral RfD Oral RfD Oral to Dermal Adjusted Units Primary Combined Sources of RfD: Dates of RfD:
of Potential Subchronic Value Units Adjustment Dermal Target Uncertainty/Modifying Target Organ (3) Target Organ (4)
Concern Factor (1) RfD (2) Organ Factors (MM/DD/YY)
1,4-Dichlorobenzene Chronic 7.0E-02 mg/kg-day 100% 7.0E-02 mg/kg-day Liver 100 ATSDR 8/2006
Subchronic NA NA
Benzene Chronic 4.0E-03 mg/kg-day 100% 4.0E-03 mg/kg-day Blood, Immune 300/1 IRIS 11/23/2010
Subchronic 1.0E-02 mg/kg-day 100% 1.0E-02 mg/kg-day Blood, Immune 100 PPRTV 9/29/2009
Chloroform Chronic 1.0E-02 mg/kg-day 100% 1.0E-02 mg/kg-day Liver, Body Weight 100/1 IRIS 11/23/2010
Subchronic 1.0E-02 mg/kg-day NA 1.0E-02 mg/kg-day Liver 1000 HEAST 7/1997
Ethylbenzene Chronic 1.0E-01 mg/kg-day 100% 1.0E-01 mg/kg-day Liver, Kidney 1000/1 IRIS 11/29/2010
Subchronic 5.0E-02 mg/kg-day 100% 5.0E-02 mg/kg-day Liver, Kidney 1000 PPRTV 9/10/2009
Tetrachloroethene Chronic 1.0E-02 mg/kg-day 100% 1.0E-02 mg/kg-day Liver 1000/1 IRIS 11/23/2010
Subchronic 1.0E-01 mg/kg-day 100% 1.0E-01 mg/kg-day Liver 100 HEAST 7/1997
Xylene, total Chronic 2.0E-01 mg/kg-day 100% 2.0E-01 mg/kg-day Body Weight, Mortality 1000/1 IRIS 11/29/2010
Subchronic 4.0E-01 mg/kg-day 100% 4.0E-01 mg/kg-day Body Weight 1000 PPRTV 9/30/2009
2-Methylnaphthalene Chronic 4.0E-03 mg/kg-day 100% 4.0E-03 mg/kg-day Lung 1000/1 IRIS 11/23/2010
Subchronic 4.0E-03 mg/kg-day 1.0E+02 4.0E-03 mg/kg-day Lung 1000/1 PPRTV 9/18/2007
Acenaphthene Chronic 6.0E-02 mg/kg-day 100% 6.0E-02 mg/kg-day Liver 3000/1 IRIS 11/23/2010
Subchronic 6.0E-01 mg/kg-day 100% 6.0E-01 mg/kg-day Liver 300 HEAST 7/1997
Benzo(a)anthracene Chronic NA NA
Subchronic NA NA
Benzo(a)pyrene Chronic NA NA
Subchronic NA NA
Benzo(b)fluoranthene Chronic NA NA
Subchronic NA NA
Benzo(k)fluoranthene Chronic NA NA
Subchronic NA NA
bis(2-Ethylhexyl)phthalate Chronic 2.0E-02 mg/kg-day 100% 2.0E-02 mg/kg-day Increased Liver Weight 1000/1 IRIS 11/29/2010
Subchronic NA NA
Chrysene Chronic NA NA
Subchronic NA NA
Dibenz(a,h)anthracene Chronic NA NA
Subchronic NA NA
Fluoranthene Chronic 4.0E-02 mg/kg-day 100% 4.0E-02 mg/kg-day Kidney, Liver, Blood 3000/1 IRIS 11/23/2010
Subchronic 4.0E-01 mg/kg-day 100% 4.0E-01 mg/kg-day Kidney, Liver, Blood 300 HEAST 7/1997
Fluorene Chronic 4.0E-02 mg/kg-day 100% 4.0E-02 mg/kg-day Blood 3000/1 IRIS 11/23/2010
Subchronic 4.0E-01 mg/kg-day 100% 4.0E-01 mg/kg-day Blood 300 HEAST 7/1997
TABLE 5.1
NON-CANCER TOXICITY DATA -- ORAL/DERMAL
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Chronic/ Oral RfD Oral RfD Oral to Dermal Adjusted Units Primary Combined Sources of RfD: Dates of RfD:
of Potential Subchronic Value Units Adjustment Dermal Target Uncertainty/Modifying Target Organ (3) Target Organ (4)
Concern Factor (1) RfD (2) Organ Factors (MM/DD/YY)
Indeno(1,2,3-cd)pyrene Chronic NA NA
Subchronic NA NA
Naphthalene Chronic 2.0E-02 mg/kg-day 100% 2.0E-02 mg/kg-day Decreased Body Weight 3000/1 IRIS 11/23/2010
Subchronic NA NA
Pyrene Chronic 3.0E-02 mg/kg-day 100% 3.0E-02 mg/kg-day Kidney 3000/1 IRIS 11/23/2010
Subchronic 3.0E-01 mg/kg-day 100% 3.0E-01 mg/kg-day Kidney 300 PPRTV 9/5/2007
Chlordane Chronic 5.0E-04 mg/kg-day 100% 5.0E-04 mg/kg-day Liver 300/1 IRIS 1/12/2011
Subchronic 6.0E-05 mg/kg-day 100% 6.0E-05 mg/kg-day Liver 1000 HEAST 7/1997
Dieldrin Chronic 5.0E-05 mg/kg-day 100% 5.0E-05 mg/kg-day Liver 100/1 IRIS 1/12/2011
Subchronic 5.0E-05 mg/kg-day 100% 5.0E-05 mg/kg-day Liver 100 HEAST 7/1997
p,p'-DDD Chronic NA NA
Subchronic NA NA
p,p'-DDE Chronic NA NA
Subchronic NA NA
p,p'-DDT Chronic 5.0E-04 mg/kg-day 100% 5.0E-04 mg/kg-day Liver 100/1 IRIS 1/12/2011
Subchronic 5.0E-04 mg/kg-day 100% 5.0E-04 mg/kg-day Liver 100 HEAST 7/1997
Aroclor 1248 Chronic NA NA
Subchronic NA NA
Aroclor 12545
Chronic 2.0E-05 mg/kg-day 100% 2.0E-05 mg/kg-day
Ocular, Finger and Toe
Nails 300/1 IRIS 11/29/2010
Subchronic NA NA
Aroclor 1260 Chronic NA NA
Subchronic NA NA
2,3,7,8-TCDD Chronic 1.0E-09 mg/kg-day 100% 1.0E-09 mg/kg-day Immune System NA ATSDR 12/1998
Subchronic NA NA
Aluminum Chronic 1.0E+00 mg/kg-day 100% 1.0E+00 mg/kg-day Neurological 100 PPRTV 10/23/2006
Subchronic NA NA
Arsenic Chronic 3.0E-04 mg/kg-day 100% 3.0E-04 mg/kg-day Skin, Vascular 3/1 IRIS 11/23/2010
Subchronic 3.0E-04 mg/kg-day 100% 3.0E-04 mg/kg-day Skin, Vascular 3 HEAST 7/1997
Cadmium (diet) Chronic 1.0E-03 mg/kg-day 3% 2.5E-05 mg/kg-day Proteinuria (Kidney) 10/1 IRIS 11/23/2010
Subchronic NA NA
Cadmium (water) Chronic 5.0E-04 mg/kg-day 5% 2.5E-05 mg/kg-day Proteinuria (Kidney) 10/1 IRIS 11/23/2010
Subchronic NA NA
Chromium (III) Chronic 1.5E+00 mg/kg-day 1.3% 2.0E-02 mg/kg-day Not identified 100/10 IRIS 11/23/2010
Subchronic NA N/A
TABLE 5.1
NON-CANCER TOXICITY DATA -- ORAL/DERMAL
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Chronic/ Oral RfD Oral RfD Oral to Dermal Adjusted Units Primary Combined Sources of RfD: Dates of RfD:
of Potential Subchronic Value Units Adjustment Dermal Target Uncertainty/Modifying Target Organ (3) Target Organ (4)
Concern Factor (1) RfD (2) Organ Factors (MM/DD/YY)
Chromium (VI) Chronic 3.0E-03 mg/kg-day 2.5% 7.5E-05 mg/kg-day Not identified 300/3 IRIS 11/23/2010
Subchronic 2.0E-02 mg/kg-day 2.5% 5.0E-04 mg/kg-day Not identified 100 HEAST 7/1997
Cobalt Chronic 3.0E-04 mg/kg-day 100% 3.0E-04 mg/kg-day Thyroid 3000 PPRTV 8/25/2008
Subchronic 3.0E-04 mg/kg-day 100% 3.0E-04 mg/kg-day Thyroid 300 PPRTV 8/25/2008
Copper Chronic 4.0E-02 mg/kg-day 100% 4.0E-02 mg/kg-day Gastrointestinal N/A HEAST 7/1997
Subchronic NA NA
Cyanide Chronic 2.0E-02 mg/kg-day 100% 2.0E-02 mg/kg-day Weight Loss, Thyroid 100/5 IRIS 1/12/2011
Subchronic 2.0E-02 mg/kg-day 100% 2.0E-02 mg/kg-day
Whole Body, Thyroid,
Nerve 500 HEAST 7/1997
Iron Chronic 7.0E-01 mg/kg-day 100% 7.0E-01 mg/kg/day Gastrointestinal 1 PPRTV 7/29/2005
Subchronic 7.0E-01 mg/kg-day 100% 7.0E-01 mg/kg/day Gastrointestinal 1 PPRTV 7/29/2005
Manganese (diet) Chronic 1.4E-01 mg/kg-day 100% 7.0E-01 mg/kg-day CNS 1/1 IRIS 11/23/2010
Subchronic NA NA
Manganese (water) Chronic 2.4E-02 mg/kg-day 4% 9.6E-04 mg/kg-day CNS 1/1 IRIS 11/23/2010
Subchronic NA NA
Methylmercury Chronic 1.0E-04 mg/kg-day 100% 1.0E-04 mg/kg-day
Developmental
Neurological 10/1 IRIS 1/12/2011
Subchronic 1.0E-04 mg/kg-day 100% 1.0E-04 mg/kg-day
Developmental
Neurological 10 HEAST 7/1997
Selenium Chronic 5.0E-03 mg/kg-day 100% 5.0E-03 mg/kg-day Whole Body 3/1 IRIS 11/23/2010
Subchronic 5.0E-03 mg/kg-day 100% 5.0E-03 mg/kg-day Whole Body 3 HEAST 7/1997
Vanadium Chronic 5.0E-03 mg/kg-day 100% 5.0E-03 mg/kg-day Hair 100/1 RSL 5/25/2010
Subchronic NA NA
NA = Not Applicable or Not Available.
(1) Source: Risk Assessment Guidance for Superfund. Volume 1: Human Health Evaluation Manual, Part E, Supplemental Guidance for Dermal Risk Assessment (Final).
Section 4.2 and Exhibit 4-1. USEPA recommends that the oral RfD should not be adjusted to estimate the absorbed dose for compounds when the absorption efficiency is greater than 50%.
Constituents with oral absorption efficiencies greater than 50%, or without reported oral absorption efficiencies, are shown with an oral absorption efficiency of 100%.
(2) Adjusted Dermal RfD = RfD (oral) x Oral to Dermal Adjustment Factor
(3) ATSDR = Agency for Toxic Substances and Disease Registry
HEAST = Health Effects Summary Tables
IRIS = Integrated Risk Information System
PPRTV = Provisional Peer Reviewed Toxicity Value, Superfund Health Technical Support Center
RSL = Regional Screening Level Table
(4) For ATSDR values, the date of the ATSDR toxicity profile
For HEAST values, date of HEAST document.
For IRIS values, the date IRIS was searched.
For PPRTV values, date of the PPRTV document.
For RSL values, date of RSL Table.
(5) Aroclor-1254 toxicity values also used for total PCBs.
TABLE 5.2
NON-CANCER TOXICITY DATA -- INHALATION
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Chronic/ Value Units Primary Combined Sources of Dates (2)
of Potential Subchronic Inhalation Target Uncertainty/Modifying RfC:RfD: (MM/DD/YY)
Concern RfC Organ Factors Target Organ
(1)
1,4-Dichlorobenzene Chronic 8.0E-01 mg/m3 Liver 100/1 IRIS 11/23/2010
Subchronic 7.1E-01 mg/m3Liver 30 HEAST 7/1997
Benzene Chronic 3.0E-02 mg/m3Blood 300/1 IRIS 11/23/2010
Subchronic 8.0E-02 mg/m3Blood 100 PPRTV 9/29/2009
Chloroform Chronic 9.8E-02 mg/m3Liver 100 ATSDR 9/1997
Subchronic NA
Ethylbenzene Chronic 1.0E+00 mg/m3Developmental 300/1 IRIS 11/29/2010
Subchronic 9.0E+00 mg/m3Ear 100 PPRTV 9/10/2009
Tetrachloroethene Chronic 2.7E-01 mg/m3Neurological 100 ATSDR 9/1997
Subchronic NA
Xylene, total Chronic 1.0E-01 mg/m3Impaired motor coordination 300/1 IRIS 11/29/2010
Subchronic 4.0E-01 mg/m3Neurological 100 PPRTV 9/30/2009
2-Methylnaphthalene Chronic NA
Subchronic NA
Acenaphthene Chronic NA
Subchronic NA
Benzo(a)anthracene Chronic NA
Subchronic NA
Benzo(a)pyrene Chronic NA
Subchronic NA
Benzo(b)fluoranthene Chronic NA
Subchronic NA
Benzo(k)fluoranthene Chronic NA
Subchronic NA
bis(2-Ethylhexyl)phthalate Chronic NA
Subchronic NA
TABLE 5.2
NON-CANCER TOXICITY DATA -- INHALATION
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Chronic/ Value Units Primary Combined Sources of Dates (2)
of Potential Subchronic Inhalation Target Uncertainty/Modifying RfC:RfD: (MM/DD/YY)
Concern RfC Organ Factors Target Organ
(1)
Chrysene Chronic NA
Subchronic NA
Dibenz(a,h)anthracene Chronic NA
Subchronic NA
Fluoranthene Chronic NA
Subchronic NA
Fluorene Chronic NA
Subchronic NA
Indeno(1,2,3-cd)pyrene Chronic NA
Subchronic NA
Naphthalene Chronic 3.0E-03 mg/m3Nasal, Respiratory 3000/1 IRIS 11/23/2010
Subchronic NA
Pyrene Chronic NA
Subchronic NA
Chlordane Chronic 7.0E-04 mg/m3Liver 1000/1 IRIS 1/2011
Subchronic NA
Dieldrin Chronic NA
Subchronic NA
p,p'-DDD Chronic NA
Subchronic NA
p,p'-DDE Chronic NA
Subchronic NA
p,p'-DDT Chronic NA
Subchronic NA
Aroclor 1248 Chronic NA
Subchronic NA
Aroclor 12543Chronic NA
Subchronic NA
TABLE 5.2
NON-CANCER TOXICITY DATA -- INHALATION
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Chronic/ Value Units Primary Combined Sources of Dates (2)
of Potential Subchronic Inhalation Target Uncertainty/Modifying RfC:RfD: (MM/DD/YY)
Concern RfC Organ Factors Target Organ
(1)
Aroclor 12603 Chronic NA
Subchronic NA
2,3,7,8-TCDD3 Chronic 4.0E-08 mg/m3 NA NA CalEPA 11/23/2010
Subchronic NA
Aluminum Chronic 5.0E-03 mg/m3 Neurological 300 PPRTV 10/23/2006
Subchronic NA
Arsenic Chronic 1.5E-05 mg/m3
Developmental,
Cardiovascular, Nervous
System 3/1 CalEPA 11/23/2010
Subchronic NA
Cadmium Chronic 1.0E-05 mg/m3Kidney 3/3 ATSDR 9/2008
Subchronic NA
Chromium (III) Chronic NA
Subchronic NA
Chromium (VI) Chronic 1.0E-04 mg/m3Respiratory System 300/1 IRIS 11/23/2010
Subchronic NA
Cobalt Chronic 6.0E-06 mg/m3Respiratory System 300 PPRTV 8/25/2008
Subchronic 2.0E-05 mg/m3Respiratory System 100 PPRTV 8/25/2008
Copper Chronic NA
Subchronic NA
Cyanide Chronic NA
Subchronic NA
Iron Chronic NA
Subchronic NA
Manganese Chronic 5.0E-05 mg/m3CNS 1000/1 IRIS 11/23/2010
Subchronic
Methylmercury Chronic NA
Subchronic NA
TABLE 5.2
NON-CANCER TOXICITY DATA -- INHALATION
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Chronic/ Value Units Primary Combined Sources of Dates (2)
of Potential Subchronic Inhalation Target Uncertainty/Modifying RfC:RfD: (MM/DD/YY)
Concern RfC Organ Factors Target Organ
(1)
Selenium Chronic 2.0E-02 mg/m3Respiratory System 30/1 CalEPA 11/23/2010
Subchronic NA
Vanadium Chronic NA
Subchronic N/A
NA = Not Applicable or Not Available
(1) ATSDR = Agency for Toxic Substances and Disease Registry
CalEPA = California EPA
HEAST = Health Effects Summary Tables
IRIS = Integrated Risk Information System
PPRTV = Provisional Peer Reviewed Toxicity Value, Superfund Health Technical Support Center
(2) For ATSDR values, the date of the ATSDR toxicity profile.
For CalEPA values, the date CalEPA toxicity database was searched.
For HEAST values, date of HEAST document.
For IRIS values, the date IRIS was searched.
For PPRTV values, date of the PPRTV document.
(3) Aroclor-1254 toxicity values also used for total PCBs.
TABLE 6.1
CANCER TOXICITY DATA -- ORAL/DERMAL
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Oral Cancer Oral to Dermal Adjusted Dermal Units EPA Source (4) Date (5)
of Potential Slope Factor Adjustment Cancer Slope Factor (2) Carcinogen (MM/DD/YY)
Concern Factor (1) Group (3)
1,4-Dichlorobenzene 5.4E-03 100% 5.4E-03 (mg/kg-day) -1 2B CalEPA 11/23/2010
Benzene 5.5E-02 100% 5.5E-02 (mg/kg-day) -1 A IRIS 11/23/2010
Chloroform 3.1E-02 100% 3.1E-02 (mg/kg-day) -1 B2, 2B CalEPA 11/23/2010
Ethylbenzene 1.1E-02 100% 1.1E-02 (mg/kg-day) -1 2A CalEPA 11/29/2010
Tetrachloroethene 5.4E-01 100% 5.4E-01 (mg/kg-day) -1 2A CalEPA 11/23/2010
Xylene, total NA NA D IRIS 11/29/2010
2-Methylnaphthalene NA NA
Acenaphthene NA NA
Benzo(a)anthracene77.3E-01 100% 7.3E-01 (mg/kg-day) -1 B2 NCEA 7/1993
Benzo(a)pyrene77.3E+00 100% 7.3E+00 (mg/kg-day) -1 B2 IRIS 11/23/2010
Benzo(b)fluoranthene77.3E-01 100% 7.3E-01 (mg/kg-day) -1 B2 NCEA 7/1993
Benzo(k)fluoranthene77.3E-02 100% 7.3E-02 (mg/kg-day) -1 B2 NCEA 7/1993Benzo(k)fluoranthene 7.3E-02 100% 7.3E-02 (mg/kg-day) -1 B2 NCEA 7/1993
bis(2-Ethylhexyl)phthalate 1.4E-02 100% 1.4E-02 (mg/kg-day) -1 B2 IRIS 11/29/2010
Chrysene77.3E-03 100% 7.3E-03 (mg/kg-day) -1 B2 NCEA 7/1993
Dibenz(a,h)anthracene77.3E+00 100% 7.3E+00 (mg/kg-day) -1 B2 NCEA 7/1993
Fluoranthene NA NA D IRIS 11/23/2010
Fluorene NA NA D IRIS 11/23/2010
Indeno(1,2,3-cd)pyrene77.3E-01 100% 7.3E-01 (mg/kg-day) -1 B2 NCEA 7/1993
Naphthalene NA NA
Pyrene NA NA D IRIS 11/23/2010
Chlordane 3.5E-01 100% 3.5E-01 (mg/kg-day) -1 B2 IRIS 1/12/2011
Dieldrin 1.6E+01 100% 1.6E+01 (mg/kg-day) -1 B2 IRIS 1/12/2011
p,p'-DDD 2.4E-01 100% 2.4E-01 (mg/kg-day) -1 B2 IRIS 1/12/2011
p,p'-DDE 3.4E-01 100% 3.4E-01 (mg/kg-day) -1 B2 IRIS 1/12/2011
p,p'-DDT 3.4E-01 100% 3.4E-01 (mg/kg-day) -1 B2 IRIS 1/12/2011
TABLE 6.1
CANCER TOXICITY DATA -- ORAL/DERMAL
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Oral Cancer Oral to Dermal Adjusted Dermal Units EPA Source (4) Date (5)
of Potential Slope Factor Adjustment Cancer Slope Factor (2) Carcinogen (MM/DD/YY)
Concern Factor (1) Group (3)
Total PCBs6 - RME value 2.0E+00 100% 2.0E+00 (mg/kg-day) -1 B2 IRIS 11/23/2010
Total PCBs6- CTE value 1.0E+00 100% 1.0E+00 (mg/kg-day) -1 B2 IRIS 11/23/2010
2,3,7,8-TCDD61.6E+05 100% 1.6E+05 (mg/kg-day) -1 B2 EPA-D 1985
Aluminum NA NA
Arsenic 1.5E+00 100% 1.5E+00 (mg/kg-day) -1 A IRIS 11/23/2010
Cadmium NA NA B1 IRIS 11/23/2010
Chromium (III) NA NA D IRIS 11/23/2010
Chromium (VI)75.0E-01 2.5% 2.0E+01 (mg/kg-day) -1 D NJ 11/23/2010
Cobalt NA NA
Copper NA NA D IRIS 11/29/2010
Cyanide NA NA D IRIS 1/12/2011
Iron NA NAIron NA NA
Manganese NA NA D IRIS 11/23/2010
Methylmercury NA NA C IRIS 1/12/2011
Selenium NA NA D IRIS 11/23/2010
Vanadium NA NA
N/A-Not available
(1) Source: Risk Assessment Guidance for Superfund. Volume 1: Human Health Evaluation Manual, Part E, Supplemental Guidance for Dermal Risk Assessment (Final).
Section 4.2 and Exhibit 4-1. USEPA recommends that the oral RfD should not be adjusted to estimate the absorbed dose for compounds when the absorption efficiency is greater than 50%.
Constituents with oral absorption efficiencies greater than 50%, or without reported oral absorption efficiencies, are shown with an oral absorption efficiency of 100%.
(2) Adjusted Dermal CSF = CSF (oral) / Oral to Dermal Adjustment Factor
(3) EPA Carcinogen Group: IARC Carcinogen Group:
A - Human carcinogen 2A: The agent is probably carcinogenic to humans
B1 - Probable human carcinogen - indicates that limited human data are available 2B: The agent is possibly carcinogenic to humans
B2 - Probable human carcinogen - indicates sufficient evidence in animals and
inadequate or no evidence in humans
C - Possible human carcinogen
D - Not classifiable as a human carcinogen
E - Evidence of noncarcinogenicity
TABLE 6.1
CANCER TOXICITY DATA -- ORAL/DERMAL
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Oral Cancer Oral to Dermal Adjusted Dermal Units EPA Source (4) Date (5)
of Potential Slope Factor Adjustment Cancer Slope Factor (2) Carcinogen (MM/DD/YY)
Concern Factor (1) Group (3)
(4) CalEPA = California EPA
EPA-D = EPA, 1985. Health Assessment Document for Polychlorinated Dibenzo-p-Dioxins. U.S. Environmental Protection Agency, Office of Health and Environmental Assessment,
Environmental Criteria and Assessment Office. Cincinnati, OH. EPA 600/8-84-014F.
IRIS = Integrated Risk Information System
NCEA = National Center for Environmental Assessment
NJ = New Jersey DEP
(5) For CalEPA values, the date CalEPA toxicity database was searched.
For IRIS values, the date IRIS was searched.
For NCEA values, the date of the NCEA document.
For New Jersey values, the date New Jersey DEP toxicity database was searched.
(6) 2,3,7,8-TCDD toxicity values will be used for dioxin-like PCBs.
Total PCBs toxicity values used for non-dioxin like PCBs.
(7) Chemical acts via a mutaganic mode of action. Age-dependent adjustment factor (ADAF) of 10 used for 0-2 year old, ADAF of 3 used for 2-6 year old,(7) Chemical acts via a mutaganic mode of action. Age-dependent adjustment factor (ADAF) of 10 used for 0-2 year old, ADAF of 3 used for 2-6 year old,
and ADAF of 3 used for 6-12 year old. Oral cancer slope factor multiplied by appropriate ADAF to derive age-specific oral cancer slope factor for receptor.
TABLE 6.2
CANCER TOXICITY DATA -- INHALATION
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Unit Risk Units Weight of Evidence/ Source (2) Date (3)
of Potential Cancer Guidance (MM/DD/YY)
Concern Description (1)
1,4-Dichlorobenzene 1.1E-05 (ug/m3) -1 2B CalEPA 11/23/2010
Benzene 7.8E-06 (ug/m3) -1 A IRIS 11/23/2010
Chloroform 2.3E-05 (ug/m3) -1 B2 IRIS 11/23/2010
Ethylbenzene 2.5E-06 (ug/m3) -1 B2 CalEPA 11/29/2010
Tetrachloroethene 5.9E-06 (ug/m3) -1 2A CalEPA 11/23/2010
Xylene, total NA D IRIS 11/29/2010
2-Methylnaphthalene NA
Acenaphthene NA
Benzo(a)anthracene5
1.1E-04 (ug/m3) -1 B2, 2A CalEPA 11/23/2010
Benzo(a)pyrene51.1E-03 (ug/m3) -1 B2, 2A CalEPA 11/23/2010
Benzo(b)fluoranthene51.1E-04 (ug/m3) -1 B2, 2A CalEPA 11/23/2010Benzo(b)fluoranthene51.1E-04 (ug/m3) -1 B2, 2A CalEPA 11/23/2010
Benzo(k)fluoranthene51.1E-04 (ug/m3) -1 B2, 2A CalEPA 11/23/2010
bis(2-Ethylhexyl)phthalate 2.4E-06 (ug/m3) -1 B2, 2B CalEPA 11/29/2010
Chrysene5
1.1E-05 (ug/m3) -1 B2, 2A CalEPA 11/23/2010
Dibenz(a,h)anthracene51.2E-03 (ug/m3) -1 B2, 2A CalEPA 11/23/2010
Fluoranthene NA D IRIS 11/23/2010
Fluorene NA D IRIS 11/23/2010
Indeno(1,2,3-cd)pyrene51.1E-04 (ug/m3) -1 B2, 2A CalEPA 11/23/2010
Naphthalene 3.4E-05 (ug/m3) -1 2B CalEPA 11/23/2010
Pyrene NA D IRIS 11/23/2010
Chlordane 1.0E-04 (ug/m3)-1
B2 IRIS 1/12/2011
Dieldrin 4.6E-03 (ug/m3)-1
B2 IRIS 1/12/2011
p,p'-DDD 6.9E-05 (ug/m3)-1
B2 CalEPA 1/12/2011
p,p'-DDE 9.7E-05 (ug/m3) -1 B2 CalEPA 1/12/2011
TABLE 6.2
CANCER TOXICITY DATA -- INHALATION
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Unit Risk Units Weight of Evidence/ Source (2) Date (3)
of Potential Cancer Guidance (MM/DD/YY)
Concern Description (1)
p,p'-DDT 9.7E-05 (ug/m3)-1
B2 IRIS 1/12/2011
Total PCBs45.7E-04 (ug/m3)
-1B2 IRIS 11/23/2010
2,3,7,8-TCDD43.8E+01 (ug/m3)
-1B2 CalEPA 11/18/2009
Aluminum NA
Arsenic 4.3E-03 (ug/m3)-1
A IRIS 11/23/2010
Cadmium 1.8E-03 (ug/m3)-1
B1 IRIS 11/23/2010
Chromium (III) NA D IRIS 11/23/2010
Chromium (VI)58.4E-02 (ug/m3)
-1A IRIS 11/23/2010
Cobalt 9.0E-03 (ug/m3)-1
B1 PPRTV 8/28/2008
Copper NA D IRIS 11/29/2010
Cyanide NA D IRIS 1/12/2011
Iron NA
Manganese NA D IRIS 11/23/2010
Methylmercury NA C IRIS 1/12/2011
Selenium NA D IRIS 11/23/2010
Vanadium NA
(1) EPA Group: IARC Carcinogen Group:
A - Human carcinogen 2A: The agent is probably carcinogenic to humans
B1 - Probable human carcinogen - indicates that limited human data are available 2B: The agent is possibly carcinogenic to humans
B2 - Probable human carcinogen - indicates sufficient evidence in animals and
inadequate or no evidence in humans
C - Possible human carcinogen
D - Not classifiable as a human carcinogen
E - Evidence of noncarcinogenicity
TABLE 6.2
CANCER TOXICITY DATA -- INHALATION
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Unit Risk Units Weight of Evidence/ Source (2) Date (3)
of Potential Cancer Guidance (MM/DD/YY)
Concern Description (1)
(2) CalEPA = California EPA
IRIS = Integrated Risk Information System
PPRTV = Provisional Peer Reviewed Toxicity Value, Superfund Health Technical Support Center
(3) For CalEPA values, the date CalEPA toxicity database was searched.
For IRIS values, the date IRIS was searched.
For PPRTV values, date of the PPRTV document.
(4) 2,3,7,8-TCDD toxicity values will be used for dioxin-like PCBs
Aroclor-1260 toxicity values alsoused for non-dioxin like PCBs
(5) Chemical acts via a mutaganic mode of action. Age-dependent adjustment factor (ADAF) of 10 used for 0-2 year old, ADAF of 3 used for 2-6 year old,
and ADAF of 3 used for 6-12 year old. Oral cancer slope factor multiplied by appropriate ADAF to derive age-specific oral cancer slope factor for receptor.
TABLE 7.1.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Sediment Surface SedimentExposed and near shore sediment in Gowanus Canal
Ingestion
Acenaphthene 3.7E+02 mg/kg 6.4E-06 mg/kg-day NA NA 1.9E-05 mg/kg-day 6.0E-02 mg/kg-day 3.1E-04
Benzo(a)anthracene 1.3E+02 mg/kg 2.2E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.6E-06 6.5E-06 mg/kg-day NA NA
Benzo(a)pyrene 1.1E+02 mg/kg 1.9E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.4E-05 5.4E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 1.1E+02 mg/kg 2.0E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.4E-06 5.7E-06 mg/kg-day NA NA
Benzo(k)fluoranthene 6.5E+01 mg/kg 1.1E-06 mg/kg-day 7.3E-02 1/(mg/kg-day) 8.2E-08 3.3E-06 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 5.8E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 8.2E-09 1.7E-06 mg/kg-day 2.0E-02 mg/kg-day 8.5E-05
Chrysene 2.5E+02 mg/kg 4.4E-06 mg/kg-day 7.3E-03 1/(mg/kg-day) 3.2E-08 1.3E-05 mg/kg-day NA NA
Dibenz(a,h)anthracene 6.2E+00 mg/kg 1.1E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 7.9E-07 3.1E-07 mg/kg-day NA NA
Fluoranthene 5.0E+02 mg/kg 8.7E-06 mg/kg-day NA NA 2.5E-05 mg/kg-day 4.0E-02 mg/kg-day 6.3E-04
Indeno(1,2,3-c,d)pyrene 4.9E+01 mg/kg 8.5E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 6.2E-07 2.5E-06 mg/kg-day NA NA
Naphthalene 3.4E+00 mg/kg 5.9E-08 mg/kg-day NA NA 1.7E-07 mg/kg-day 2.0E-02 mg/kg-day 8.7E-06
Pyrene 5.3E+02 mg/kg 9.2E-06 mg/kg-day NA NA 2.7E-05 mg/kg-day 3.0E-02 mg/kg-day 9.0E-04
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 7.0E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 1.1E-07 2.0E-12 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 9.1E-08 mg/kg-day 2.0E+00 1/(mg/kg-day) 1.8E-07 2.7E-07 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 9.4E-08 mg/kg-day NA NA 2.7E-07 mg/kg-day 2.0E-05 mg/kg-day 1.4E-02
Aluminum 1.6E+04 mg/kg 2.8E-04 mg/kg-day NA NA 8.1E-04 mg/kg-day 1.0E+00 mg/kg-day 8.1E-04
Arsenic 1.8E+01 mg/kg 3.1E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.7E-07 9.2E-07 mg/kg-day 3.0E-04 mg/kg-day 3.1E-03
Cadmium 9.6E+00 mg/kg 1.7E-07 mg/kg-day NA NA 4.9E-07 mg/kg-day 1.0E-03 mg/kg-day 4.9E-04
Chromium 9.4E+01 mg/kg 1.6E-06 mg/kg-day 5.0E-01 1/(mg/kg-day) 8.2E-07 4.8E-06 mg/kg-day 3.0E-03 mg/kg-day 1.6E-03
Cobalt 1.3E+01 mg/kg 2.3E-07 mg/kg-day NA NA 6.6E-07 mg/kg-day 3.0E-04 mg/kg-day 2.2E-03
Copper 3.5E+02 mg/kg 6.1E-06 mg/kg-day NA NA 1.8E-05 mg/kg-day 4.0E-02 mg/kg-day 4.5E-04
Iron 4.0E+04 mg/kg 7.0E-04 mg/kg-day NA NA 2.0E-03 mg/kg-day 7.0E-01 mg/kg-day 2.9E-03
Lead 1.9E+03 mg/kg 3.3E-05 mg/kg-day NA NA 9.5E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 5.5E-06 mg/kg-day NA NA 1.6E-05 mg/kg-day 1.4E-01 mg/kg-day 1.1E-04
Vanadium 5.0E+01 mg/kg 8.7E-07 mg/kg-day NA NA 2.5E-06 mg/kg-day 5.0E-03 mg/kg-day 5.1E-04
Exp. Route Total 2.0E-05 2.8E-02
TABLE 7.1.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Sediment Surface SedimentExposed and near shore sediment in Gowanus Canal
Dermal
Acenaphthene 3.7E+02 mg/kg 3.4E-05 mg/kg-day NA NA 1.0E-04 mg/kg-day 6.0E-02 mg/kg-day 1.7E-03
Benzo(a)anthracene 1.3E+02 mg/kg 1.2E-05 mg/kg-day 7.3E-01 1/(mg/kg-day) 8.7E-06 3.5E-05 mg/kg-day NA NA
Benzo(a)pyrene 1.1E+02 mg/kg 1.0E-05 mg/kg-day 7.3E+00 1/(mg/kg-day) 7.4E-05 2.9E-05 mg/kg-day NA NA
Benzo(b)fluoranthene 1.1E+02 mg/kg 1.1E-05 mg/kg-day 7.3E-01 1/(mg/kg-day) 7.8E-06 3.1E-05 mg/kg-day NA NA
Benzo(k)fluoranthene 6.5E+01 mg/kg 6.1E-06 mg/kg-day 7.3E-02 1/(mg/kg-day) 4.4E-07 1.8E-05 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 2.4E-06 mg/kg-day 1.4E-02 1/(mg/kg-day) 3.4E-08 7.1E-06 mg/kg-day 2.0E-02 mg/kg-day 3.5E-04
Chrysene 2.5E+02 mg/kg 2.4E-05 mg/kg-day 7.3E-03 1/(mg/kg-day) 1.7E-07 7.0E-05 mg/kg-day NA NA
Dibenz(a,h)anthracene 6.2E+00 mg/kg 5.8E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.3E-06 1.7E-06 mg/kg-day NA NA
Fluoranthene 5.0E+02 mg/kg 4.7E-05 mg/kg-day NA NA 1.4E-04 mg/kg-day 4.0E-02 mg/kg-day 3.4E-03
Indeno(1,2,3-c,d)pyrene 4.9E+01 mg/kg 4.6E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 3.4E-06 1.3E-05 mg/kg-day NA NA
Naphthalene 3.4E+00 mg/kg 3.2E-07 mg/kg-day NA NA 9.4E-07 mg/kg-day 2.0E-02 mg/kg-day 4.7E-05
Pyrene 5.3E+02 mg/kg 5.0E-05 mg/kg-day NA NA 1.5E-04 mg/kg-day 3.0E-02 mg/kg-day 4.8E-03
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 4.1E-12 mg/kg-day 1.6E+05 1/(mg/kg-day) 6.4E-07 1.2E-11 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 5.3E-07 mg/kg-day 2.0E+00 1/(mg/kg-day) 1.1E-06 1.5E-06 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 5.5E-07 mg/kg-day NA NA 1.6E-06 mg/kg-day 2.0E-05 mg/kg-day 8.0E-02
Aluminum 1.6E+04 mg/kg 1.2E-04 mg/kg-day NA NA 3.4E-04 mg/kg-day 1.0E+00 mg/kg-day 3.4E-04
Arsenic 1.8E+01 mg/kg 3.9E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 5.9E-07 1.1E-06 mg/kg-day 3.0E-04 mg/kg-day 3.8E-03
Cadmium 9.6E+00 mg/kg 7.0E-09 mg/kg-day NA NA 2.0E-08 mg/kg-day 2.5E-05 mg/kg-day 8.1E-04
Chromium 9.4E+01 mg/kg 6.8E-07 mg/kg-day 2.0E+01 1/(mg/kg-day) 1.4E-05 2.0E-06 mg/kg-day 7.5E-05 mg/kg-day 2.6E-02
Cobalt 1.3E+01 mg/kg 9.4E-08 mg/kg-day NA NA 2.7E-07 mg/kg-day 3.0E-04 mg/kg-day 9.1E-04
Copper 3.5E+02 mg/kg 2.6E-06 mg/kg-day NA NA 7.4E-06 mg/kg-day 4.0E-02 mg/kg-day 1.9E-04
Iron 4.0E+04 mg/kg 2.9E-04 mg/kg-day NA NA 8.5E-04 mg/kg-day 7.0E-01 mg/kg-day 1.2E-03
Lead 1.9E+03 mg/kg 1.4E-05 mg/kg-day NA NA 4.0E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 2.3E-06 mg/kg-day NA NA 6.6E-06 mg/kg-day 9.6E-04 mg/kg-day 6.9E-03
Vanadium 5.0E+01 mg/kg 3.6E-07 mg/kg-day NA NA 1.1E-06 mg/kg-day 5.0E-03 mg/kg-day 2.1E-04
Exp. Route Total 1.1E-04 1.3E-01
Exposure Point Total 1.3E-04 1.6E-01
1.3E-04 1.6E-01
Exposed Surface Sediment Total 1.3E-04 1.6E-01
Exposure Medium Total
TABLE 7.1.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Dry event) Benzene 2.2E+00 ug/L 1.0E-07 mg/kg-day 5.5E-02 1/(mg/kg-day) 5.6E-09 3.0E-07 mg/kg-day 4.0E-03 mg/kg-day 7.4E-05
Benzo(a)anthracene 2.7E-01 ug/L 1.2E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 8.8E-09 3.5E-08 mg/kg-day NA NA
Benzo(a)pyrene 6.6E-01 ug/L 3.0E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.2E-07 8.7E-08 mg/kg-day NA NA
Benzo(b)fluoranthene 3.0E-01 ug/L 1.4E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 9.9E-09 4.0E-08 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 1.1E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 1.6E-09 3.2E-07 mg/kg-day 2.0E-02 mg/kg-day 1.6E-05
Indeno(1,2,3-c,d)pyrene 1.3E-01 ug/L 6.0E-09 mg/kg-day 7.3E-01 1/(mg/kg-day) 4.4E-09 1.7E-08 mg/kg-day NA NA
Arsenic 2.0E+01 ug/L 9.0E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.4E-06 2.6E-06 mg/kg-day 3.0E-04 mg/kg-day 8.8E-03
Chromium 1.9E+01 ug/L 8.6E-07 mg/kg-day 5.0E-01 1/(mg/kg-day) 4.3E-07 2.5E-06 mg/kg-day 3.0E-03 mg/kg-day 8.3E-04
Copper 1.7E+02 ug/L 7.8E-06 mg/kg-day NA 2.3E-05 mg/kg-day 4.0E-02 mg/kg-day 5.7E-04
Selenium 4.1E+01 ug/L 1.9E-06 mg/kg-day NA 5.4E-06 mg/kg-day 5.0E-03 mg/kg-day 1.1E-03
Exp. Route Total 2.0E-06 1.1E-02
Dermal
Benzene 2.2E+00 ug/L 6.5E-07 mg/kg-day 5.5E-02 1/(mg/kg-day) 3.6E-08 1.9E-06 mg/kg-day 4.0E-03 mg/kg-day 4.7E-04
Benzo(a)anthracene 2.7E-01 ug/L 5.0E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 3.6E-06 1.5E-05 mg/kg-day NA NA
Benzo(a)pyrene 6.6E-01 ug/L 2.1E-05 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.5E-04 6.2E-05 mg/kg-day NA NA
Benzo(b)fluoranthene 3.0E-01 ug/L 9.7E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 7.1E-06 2.8E-05 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 5.6E-06 mg/kg-day 1.4E-02 1/(mg/kg-day) 7.8E-08 1.6E-05 mg/kg-day 2.0E-02 mg/kg-day 8.2E-04
Indeno(1,2,3-c,d)pyrene 1.3E-01 ug/L 4.3E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 3.1E-06 1.3E-05 mg/kg-day NA NA
Arsenic 2.0E+01 ug/L 3.2E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.9E-07 9.5E-07 mg/kg-day 3.0E-04 mg/kg-day 3.2E-03
Chromium 1.9E+01 ug/L 6.2E-07 mg/kg-day 2.0E+01 1/(mg/kg-day) 1.2E-05 1.8E-06 mg/kg-day 7.5E-05 mg/kg-day 2.4E-02
Copper 1.7E+02 ug/L 2.8E-06 mg/kg-day NA NA 8.2E-06 mg/kg-day 4.0E-02 mg/kg-day 2.0E-04
Selenium 4.1E+01 ug/L 6.7E-07 mg/kg-day NA NA 2.0E-06 mg/kg-day 5.0E-03 mg/kg-day 3.9E-04
Exp. Route Total 1.8E-04 2.9E-02
Exposure Point Total 1.8E-04 4.0E-02
1.8E-04 4.0E-02
Surface Water Total - Dry Event 1.8E-04 4.0E-02
Exposure Medium Total
TABLE 7.1.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 2.7E-08 mg/kg-day 5.4E-03 1/(mg/kg-day) 1.4E-10 7.8E-08 mg/kg-day 7.0E-02 mg/kg-day 1.1E-06
Benzene 8.4E-01 ug/L 3.8E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 2.1E-09 1.1E-07 mg/kg-day 4.0E-03 mg/kg-day 2.8E-05
Chloroform 5.6E-01 ug/L 2.5E-08 mg/kg-day 3.1E-02 1/(mg/kg-day) 7.9E-10 7.4E-08 mg/kg-day 1.0E-02 mg/kg-day 7.4E-06
Ethylbenzene 8.7E-01 ug/L 3.9E-08 mg/kg-day 1.1E-02 1/(mg/kg-day) 4.3E-10 1.1E-07 mg/kg-day 1.0E-01 mg/kg-day 1.1E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 1.1E-06 mg/kg-day 5.4E-01 1/(mg/kg-day) 6.0E-07 3.2E-06 mg/kg-day 1.0E-02 mg/kg-day 3.2E-04
Benzo(a)anthracene 1.0E-01 ug/L 4.7E-09 mg/kg-day 7.3E-01 1/(mg/kg-day) 3.4E-09 1.4E-08 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 9.3E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 6.8E-08 2.7E-08 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 8.6E-09 mg/kg-day 7.3E-01 1/(mg/kg-day) 6.3E-09 2.5E-08 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 4.6E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.3E-08 1.3E-08 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 2.3E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.7E-08 6.6E-08 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L 1.7E-08 mg/kg-day NA NA 4.8E-08 mg/kg-day 2.0E-02 mg/kg-day 2.4E-06
Arsenic 1.7E+01 ug/L 7.5E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.1E-06 2.2E-06 mg/kg-day 3.0E-04 mg/kg-day 7.3E-03
Chromium 8.5E+00 ug/L 3.9E-07 mg/kg-day 5.0E-01 1/(mg/kg-day) 1.9E-07 1.1E-06 mg/kg-day 3.0E-03 mg/kg-day 3.8E-04
Cobalt 3.9E+00 ug/L 1.8E-07 mg/kg-day NA NA 5.2E-07 mg/kg-day 3.0E-04 mg/kg-day 1.7E-03
Lead 1.5E+01 ug/L 6.8E-07 mg/kg-day NA NA 2.0E-06 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 1.5E-06 mg/kg-day NA NA 4.4E-06 mg/kg-day 5.0E-03 mg/kg-day 8.9E-04
Exp. Route Total 2.1E-06 1.1E-02
TABLE 7.1.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Dermal
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 6.0E-07 mg/kg-day 5.4E-03 1/(mg/kg-day) 3.2E-09 1.8E-06 mg/kg-day 7.0E-02 mg/kg-day 2.5E-05
Benzene 8.4E-01 ug/L 2.4E-07 mg/kg-day 5.5E-02 1/(mg/kg-day) 1.3E-08 7.1E-07 mg/kg-day 4.0E-03 mg/kg-day 1.8E-04
Chloroform 5.6E-01 ug/L 8.5E-08 mg/kg-day 3.1E-02 1/(mg/kg-day) 2.6E-09 2.5E-07 mg/kg-day 1.0E-02 mg/kg-day 2.5E-05
Ethylbenzene 8.7E-01 ug/L 8.5E-07 mg/kg-day 1.1E-02 1/(mg/kg-day) 9.3E-09 2.5E-06 mg/kg-day 1.0E-01 mg/kg-day 2.5E-05
Tetrachloroethylene(PCE) 2.4E+01 ug/L 2.2E-05 mg/kg-day 5.4E-01 1/(mg/kg-day) 1.2E-05 6.4E-05 mg/kg-day 1.0E-02 mg/kg-day 6.4E-03
Benzo(a)anthracene 1.0E-01 ug/L 1.9E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.4E-06 5.7E-06 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 6.6E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.8E-05 1.9E-05 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 6.2E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 4.5E-06 1.8E-05 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 5.0E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.7E-05 1.5E-05 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 1.6E-05 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.2E-05 4.8E-05 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L 3.8E-07 mg/kg-day NA NA 1.1E-06 mg/kg-day 2.0E-02 mg/kg-day 5.5E-05
Arsenic 1.7E+01 ug/L 2.7E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.1E-07 7.9E-07 mg/kg-day 3.0E-04 mg/kg-day 2.6E-03
Chromium 8.5E+00 ug/L 2.8E-07 mg/kg-day 2.0E+01 1/(mg/kg-day) 5.6E-06 8.1E-07 mg/kg-day 7.5E-05 mg/kg-day 1.1E-02
Cobalt 3.9E+00 ug/L 2.5E-08 mg/kg-day NA NA 7.4E-08 mg/kg-day 3.0E-04 mg/kg-day 2.5E-04
Lead 1.5E+01 ug/L 2.4E-08 mg/kg-day NA NA 7.1E-08 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 5.5E-07 mg/kg-day NA NA 1.6E-06 mg/kg-day 5.0E-03 mg/kg-day 3.2E-04
Exp. Route Total 1.2E-04 2.1E-02
Exposure Point Total 1.2E-04 3.1E-02
1.2E-04 3.1E-02
Surface Water Total - Wet Event 1.2E-04 3.1E-02
Air AirAmbient air at canal
levelInhalation
(pre-aeration system Benzene 9.1E-04 mg/m3 2.4E-03 ug/m3 7.8E-06 1/(ug/m3) 1.9E-08 7.1E-06 mg/m3 3.0E-02 mg/m32.4E-04
operation) Chloroform 2.2E-04 mg/m3 5.9E-04 ug/m3 2.3E-05 1/(ug/m3) 1.4E-08 1.7E-06 mg/m3 9.8E-02 mg/m31.7E-05
Ethylbenzene 2.3E-03 mg/m3 6.0E-03 ug/m3 2.5E-06 1/(ug/m3) 1.5E-08 1.7E-05 mg/m3 1.0E+00 mg/m31.7E-05
Xylene, total 1.0E-02 mg/m3 2.7E-02 ug/m3 NA NA 7.8E-05 mg/m3 1.0E-01 mg/m37.8E-04
Naphthalene 2.1E-03 mg/m3 5.5E-03 ug/m3 3.4E-05 1/(ug/m3) 1.9E-07 1.6E-05 mg/m3 3.0E-03 mg/m35.4E-03
Exp. Route Total 2.4E-07 6.4E-03
Exposure Point Total 2.4E-07 6.4E-03
2.4E-07 6.4E-03
Ambient air at canal level Total - Pre-aeration system operation 2.4E-07 6.4E-03
Exposure Medium Total
Exposure Medium Total
TABLE 7.1.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Air AirAmbient air at canal
levelInhalation
(after aeration system Benzene 1.9E-03 mg/m3 5.1E-03 ug/m3 7.8E-06 1/(ug/m3) 4.0E-08 1.5E-05 mg/m3 3.0E-02 mg/m35.0E-04
started) Chloroform 2.1E-04 mg/m3 5.4E-04 ug/m3 2.3E-05 1/(ug/m3) 1.2E-08 1.6E-06 mg/m3 9.8E-02 mg/m31.6E-05
Ethylbenzene 2.1E-03 mg/m3 5.6E-03 ug/m3 2.5E-06 1/(ug/m3) 1.4E-08 1.6E-05 mg/m3 1.0E+00 mg/m31.6E-05
Xylene, total 1.7E-02 mg/m3 4.6E-02 ug/m3 NA NA 1.3E-04 mg/m3 1.0E-01 mg/m31.3E-03
Naphthalene 2.2E-03 mg/m3 5.8E-03 ug/m3 3.4E-05 1/(ug/m3) 2.0E-07 1.7E-05 mg/m3 3.0E-03 mg/m35.6E-03
Exp. Route Total 2.6E-07 7.5E-03
Exposure Point Total 2.6E-07 7.5E-03
2.6E-07 7.5E-03
Ambient air at canal level Total - After aeration system turned on 2.6E-07 7.5E-03
Total Total of Receptor Risks Across All Media 3.2E-04 Total of Receptor Hazards Across All Media 2.1E-01
Notes-
NA = Not available / Not applicable.
DAevent for surface water from dry event calculated on Table 7.1.RME Supplement A.
DAevent for surface water from wet event calculated on Table 7.1.RME Supplement B.
Total includes sum of exposed and near shore sediment, maximum of dry event and wet event surface water, and maximum of air prior to areation system operation and after aeration system started
Exposure Medium Total
TABLE 7.1.RME Supplement A
Calculation of Daevent Dry Event
Recreational Scenario
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Water Permeability Lag Fraction Duration
of Potential Concentration Coefficient Time Absorbed Water of Event
Concern (CW) (Kp) B (τevent) t* (FA) (tevent) DAevent
(µg/L) (cm/hr) (dimensionless) (hr) (hr) (dimensionless) (hr) (mg/cm2-event) Eq
Benzene 2.2E+00 1.5E-02 5.1E-02 2.9E-01 7.0E-01 1.0E+00 2.6 1.0E-07 3
Benzo(a)anthracene 2.7E-01 4.7E-01 2.8E+00 2.0E+00 8.5E+00 1.0E+00 2.6 7.9E-07 2
Benzo(a)pyrene 6.6E-01 7.0E-01 4.3E+00 2.7E+00 1.2E+01 1.0E+00 2.6 3.4E-06 2
Benzo(b)fluoranthene 3.0E-01 7.0E-01 4.3E+00 2.8E+00 1.2E+01 1.0E+00 2.6 1.6E-06 2
Bis(2-ethylhexyl) phthalate 2.5E+00 2.5E-02 1.9E-01 1.7E+01 4.0E+01 8.0E-01 2.6 8.9E-07 2
Indeno(1,2,3-c,d)pyrene 1.3E-01 1.0E+00 6.7E+00 3.8E+00 1.7E+01 6.0E-01 2.6 6.9E-07 2
Arsenic 2.0E+01 1.0E-03 NA NA NA NA 2.6 5.2E-08 1
Chromium 1.9E+01 2.0E-03 NA NA NA NA 2.6 9.8E-08 1
Copper 1.7E+02 1.0E-03 NA NA NA NA 2.6 4.5E-07 1
Selenium 4.1E+01 1.0E-03 NA NA NA NA 2.6 1.1E-07 1
Inorganics: DAevent (mg/cm2-event) =
Kp x CW x tevent x 0.001 mg/µg x 0.001 l/cm3 (eq 1)
Organics: DAevent (mg/cm2-event) =
If tevent<t*, then DAevent =
2 x FA x Kp x CW x (sqrt((6 x τevent x tevent)/π)) x 0.001 mg/µg x 0.001 l/cm3 (eq 2)
If tevent>t*, then DAevent =
FA x Kp x CW x ( tevent/(1+B) + 2 x τevent x ((1 + 3xB + 3xB2)/(1+B)2) x 0.001 mg/µg x 0.001 l/cm3 (eq 3)
Notes:
NA - Not applicable
Permeability constants and other input parameter values from EPA 2004, Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual (Part E,
Supplemental Guidance for Dermal Risk Assessment - Final). EPA/540/R/99/005. The default value of 0.001 was assigned to inorganics not listed in this document.
B - Dimensionless ratio of the permeability coefficient of a compound through the stratum corneum relative to its permeability
coefficient across the viable epidermis (dimensionless).
t* - Time to reach steady-state
TABLE 7.1.RME Supplement B
Calculation of Daevent Wet Event
Recreational Scenario
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Water Permeability Lag Fraction Duration
of Potential Concentration Coefficient Time Absorbed Water of Event
Concern (CW) (Kp) B (τevent) t* (FA) (tevent) DAevent
(µg/L) (cm/hr) (dimensionless) (hr) (hr) (dimensionless) (hr) (mg/cm2-event) Eq
1,4-dichlorobenzene 5.9E-01 4.2E-02 2.0E-01 7.1E-01 1.7E+00 1.0E+00 2.6 9.6E-08 3
Benzene 8.4E-01 1.5E-02 5.1E-02 2.9E-01 7.0E-01 1.0E+00 2.6 3.9E-08 3
Chloroform 5.6E-01 6.8E-03 2.9E-02 5.0E-01 1.2E+00 1.0E+00 2.6 1.4E-08 3
Ethylbenzene 8.7E-01 4.9E-02 2.0E-01 4.2E-01 1.0E+00 1.0E+00 2.6 1.4E-07 3
Tetrachloroethylene(PCE) 2.4E+01 3.3E-02 1.7E-01 9.1E-01 2.2E+00 1.0E+00 2.6 3.5E-06 3
Benzo(a)anthracene 1.0E-01 4.7E-01 2.8E+00 2.0E+00 8.5E+00 1.0E+00 2.6 3.1E-07 2
Benzo(a)pyrene 2.1E-01 7.0E-01 4.3E+00 2.7E+00 1.2E+01 1.0E+00 2.6 1.0E-06 2
Benzo(b)fluoranthene 1.9E-01 7.0E-01 4.3E+00 2.8E+00 1.2E+01 1.0E+00 2.6 9.8E-07 2
Dibenz(a,h)anthracene 1.0E-01 1.5E+00 9.7E+00 3.9E+00 1.8E+01 6.0E-01 2.6 8.0E-07 2
Indeno(1,2,3-c,d)pyrene 5.0E-01 1.0E+00 6.7E+00 3.8E+00 1.7E+01 6.0E-01 2.6 2.6E-06 2
Naphthalene 3.6E-01 4.7E-02 2.0E-01 5.6E-01 1.3E+00 1.0E+00 2.6 6.0E-08 3
Arsenic 1.7E+01 1.0E-03 NA NA NA NA 2.6 4.3E-08 1
Chromium 8.5E+00 2.0E-03 NA NA NA NA 2.6 4.4E-08 1
Cobalt 3.9E+00 4.0E-04 NA NA NA NA 2.6 4.1E-09 1
Lead 1.5E+01 1.0E-04 NA NA NA NA 2.6 3.9E-09 1
Selenium 3.4E+01 1.0E-03 NA NA NA NA 2.6 8.7E-08 1
Inorganics: DAevent (mg/cm2-event) =
Kp x CW x tevent x 0.001 mg/µg x 0.001 l/cm3 (eq 1)
Organics: DAevent (mg/cm2-event) =
If tevent<t*, then DAevent =
2 x FA x Kp x CW x (sqrt((6 x τevent x tevent)/π)) x 0.001 mg/µg x 0.001 l/cm3 (eq 2)
If tevent>t*, then DAevent =
FA x Kp x CW x ( tevent/(1+B) + 2 x τevent x ((1 + 3xB + 3xB2)/(1+B)2) x 0.001 mg/µg x 0.001 l/cm3 (eq 3)
Ethylbenzene
Notes:
NA - Not applicable
Permeability constants and other input parameter values from EPA 2004, Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual (Part E,
Supplemental Guidance for Dermal Risk Assessment - Final). EPA/540/R/99/005. The default value of 0.001 was assigned to inorganics not listed in this document.
B - Dimensionless ratio of the permeability coefficient of a compound through the stratum corneum relative to its permeability
coefficient across the viable epidermis (dimensionless).
t* - Time to reach steady-state
TABLE 7.2.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Ingestion
Acenaphthene 3.7E+02 mg/kg 2.0E-06 mg/kg-day NA NA 2.3E-05 mg/kg-day 6.0E-02 mg/kg-day 3.8E-04
Benzo(a)anthracene (12-16)* 1.3E+02 mg/kg 4.5E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 9.9E-07 7.9E-06 mg/kg-day NA NA
Benzo(a)anthracene (16-18)* 1.3E+02 mg/kg 2.3E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.7E-07
Benzo(a)pyrene (12-16)* 1.1E+02 mg/kg 3.8E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 8.4E-06 6.7E-06 mg/kg-day NA NA
Benzo(a)pyrene (16-18)* 1.1E+02 mg/kg 1.9E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.4E-06
Benzo(b)fluoranthene (12-16)* 1.1E+02 mg/kg 4.0E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 8.8E-07 7.1E-06 mg/kg-day NA NA
Benzo(b)fluoranthene (16-18)* 1.1E+02 mg/kg 2.0E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.5E-07
Benzo(k)fluoranthene (12-16)* 6.5E+01 mg/kg 2.3E-07 mg/kg-day 2.2E-01 1/(mg/kg-day) 5.1E-08 4.0E-06 mg/kg-day NA NA
Benzo(k)fluoranthene (16-18)* 6.5E+01 mg/kg 1.2E-07 mg/kg-day 7.3E-02 1/(mg/kg-day) 8.4E-09
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 1.8E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 2.5E-09 2.1E-06 mg/kg-day 2.0E-02 mg/kg-day 1.0E-04
Chrysene (12-16)* 2.5E+02 mg/kg 9.0E-07 mg/kg-day 2.2E-02 1/(mg/kg-day) 2.0E-08 1.6E-05 mg/kg-day NA NA
Chrysene (16-18)* 2.5E+02 mg/kg 4.5E-07 mg/kg-day 7.3E-03 1/(mg/kg-day) 3.3E-09
Dibenz(a,h)anthracene (12-16)* 6.2E+00 mg/kg 2.2E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 4.8E-07 3.9E-07 mg/kg-day NA NA
Dibenz(a,h)anthracene (16-18)* 6.2E+00 mg/kg 1.1E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 8.1E-08
Fluoranthene 5.0E+02 mg/kg 2.7E-06 mg/kg-day NA NA 3.1E-05 mg/kg-day 4.0E-02 mg/kg-day 7.7E-04
Indeno(1,2,3-c,d)pyrene (12-16)* 4.9E+01 mg/kg 1.7E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 3.8E-07 3.1E-06 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (16-18)* 4.9E+01 mg/kg 8.7E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 6.4E-08
Naphthalene 3.4E+00 mg/kg 1.8E-08 mg/kg-day NA NA 2.1E-07 mg/kg-day 2.0E-02 mg/kg-day 1.1E-05
Pyrene 5.3E+02 mg/kg 2.8E-06 mg/kg-day NA NA 3.3E-05 mg/kg-day 3.0E-02 mg/kg-day 1.1E-03
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 2.2E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 3.4E-08 2.5E-12 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 2.8E-08 mg/kg-day 2.0E+00 1/(mg/kg-day) 5.6E-08 3.3E-07 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 2.9E-08 mg/kg-day NA NA 3.4E-07 mg/kg-day 2.0E-05 mg/kg-day 1.7E-02
Aluminum 1.6E+04 mg/kg 8.5E-05 mg/kg-day NA NA 9.9E-04 mg/kg-day 1.0E+00 mg/kg-day 9.9E-04
Arsenic 1.8E+01 mg/kg 9.6E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.4E-07 1.1E-06 mg/kg-day 3.0E-04 mg/kg-day 3.7E-03
Cadmium 9.6E+00 mg/kg 5.2E-08 mg/kg-day NA NA 6.0E-07 mg/kg-day 1.0E-03 mg/kg-day 6.0E-04
Chromium (12-16)* 9.4E+01 mg/kg 3.3E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 5.0E-07 5.8E-06 mg/kg-day 3.0E-03 mg/kg-day 1.9E-03
Chromium (16-18)* 9.4E+01 mg/kg 1.7E-07 mg/kg-day 5.0E-01 1/(mg/kg-day) 8.3E-08
Cobalt 1.3E+01 mg/kg 6.9E-08 mg/kg-day NA NA 8.1E-07 mg/kg-day 3.0E-04 mg/kg-day 2.7E-03
Copper 3.5E+02 mg/kg 1.9E-06 mg/kg-day NA NA 2.2E-05 mg/kg-day 4.0E-02 mg/kg-day 5.5E-04
Iron 4.0E+04 mg/kg 2.1E-04 mg/kg-day NA NA 2.5E-03 mg/kg-day 7.0E-01 mg/kg-day 3.6E-03
Lead 1.9E+03 mg/kg 1.0E-05 mg/kg-day NA NA 1.2E-04 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 1.7E-06 mg/kg-day NA NA 2.0E-05 mg/kg-day 1.4E-01 mg/kg-day 1.4E-04
Vanadium 5.0E+01 mg/kg 2.7E-07 mg/kg-day NA NA 3.1E-06 mg/kg-day 5.0E-03 mg/kg-day 6.3E-04
Exp. Route Total 1.4E-05 3.4E-02
TABLE 7.2.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Dermal
Acenaphthene 3.7E+02 mg/kg 1.1E-05 mg/kg-day NA NA 1.2E-04 mg/kg-day 6.0E-02 mg/kg-day 2.1E-03
Benzo(a)anthracene (12-16)* 1.3E+02 mg/kg 2.5E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 5.4E-06 4.3E-05 mg/kg-day NA NA
Benzo(a)anthracene (16-18)* 1.3E+02 mg/kg 1.2E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 9.0E-07
Benzo(a)pyrene (12-16)* 1.1E+02 mg/kg 2.1E-06 mg/kg-day 2.2E+01 1/(mg/kg-day) 4.6E-05 3.6E-05 mg/kg-day NA NA
Benzo(a)pyrene (16-18)* 1.1E+02 mg/kg 1.0E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 7.6E-06
Benzo(b)fluoranthene (12-16)* 1.1E+02 mg/kg 2.2E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 4.8E-06 3.8E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (16-18)* 1.1E+02 mg/kg 1.1E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 8.0E-07
Benzo(k)fluoranthene (12-16)* 6.5E+01 mg/kg 1.3E-06 mg/kg-day 2.2E-01 1/(mg/kg-day) 2.8E-07 2.2E-05 mg/kg-day NA NA
Benzo(k)fluoranthene (16-18)* 6.5E+01 mg/kg 6.3E-07 mg/kg-day 7.3E-02 1/(mg/kg-day) 4.6E-08
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 7.5E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 1.0E-08 8.7E-06 mg/kg-day 2.0E-02 mg/kg-day 4.4E-04
Chrysene (12-16)* 2.5E+02 mg/kg 4.9E-06 mg/kg-day 2.2E-02 1/(mg/kg-day) 1.1E-07 8.6E-05 mg/kg-day NA NA
Chrysene (16-18)* 2.5E+02 mg/kg 2.5E-06 mg/kg-day 7.3E-03 1/(mg/kg-day) 1.8E-08
Dibenz(a,h)anthracene (12-16)* 6.2E+00 mg/kg 1.2E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 2.6E-06 2.1E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (16-18)* 6.2E+00 mg/kg 6.0E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.4E-07
Fluoranthene 5.0E+02 mg/kg 1.4E-05 mg/kg-day NA NA 1.7E-04 mg/kg-day 4.0E-02 mg/kg-day 4.2E-03
Indeno(1,2,3-c,d)pyrene (12-16)* 4.9E+01 mg/kg 9.5E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.1E-06 1.7E-05 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (16-18)* 4.9E+01 mg/kg 4.8E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 3.5E-07
Naphthalene 3.4E+00 mg/kg 9.9E-08 mg/kg-day NA NA 1.2E-06 mg/kg-day 2.0E-02 mg/kg-day 5.8E-05
Pyrene 5.3E+02 mg/kg 1.5E-05 mg/kg-day NA NA 1.8E-04 mg/kg-day 3.0E-02 mg/kg-day 6.0E-03
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 1.3E-12 mg/kg-day 1.6E+05 1/(mg/kg-day) 2.0E-07 1.5E-11 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 1.6E-07 mg/kg-day 2.0E+00 1/(mg/kg-day) 3.3E-07 1.9E-06 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 1.7E-07 mg/kg-day NA NA 2.0E-06 mg/kg-day 2.0E-05 mg/kg-day 9.9E-02
Aluminum 1.6E+04 mg/kg 3.6E-05 mg/kg-day NA NA 4.2E-04 mg/kg-day 1.0E+00 mg/kg-day 4.2E-04
Arsenic 1.8E+01 mg/kg 1.2E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.8E-07 1.4E-06 mg/kg-day 3.0E-04 mg/kg-day 4.7E-03
Cadmium 9.6E+00 mg/kg 2.2E-09 mg/kg-day NA NA 2.5E-08 mg/kg-day 2.5E-05 mg/kg-day 1.0E-03
Chromium (12-16)* 9.4E+01 mg/kg 1.4E-07 mg/kg-day 6.0E+01 1/(mg/kg-day) 8.4E-06 2.4E-06 mg/kg-day 7.5E-05 mg/kg-day 3.3E-02
Chromium (16-18)* 9.4E+01 mg/kg 7.0E-08 mg/kg-day 2.0E+01 1/(mg/kg-day) 1.4E-06
Cobalt 1.3E+01 mg/kg 2.9E-08 mg/kg-day NA NA 3.4E-07 mg/kg-day 3.0E-04 mg/kg-day 1.1E-03
Copper 3.5E+02 mg/kg 7.9E-07 mg/kg-day NA NA 9.2E-06 mg/kg-day 4.0E-02 mg/kg-day 2.3E-04
Iron 4.0E+04 mg/kg 9.0E-05 mg/kg-day NA NA 1.0E-03 mg/kg-day 7.0E-01 mg/kg-day 1.5E-03
Lead 1.9E+03 mg/kg 4.2E-06 mg/kg-day NA NA 4.9E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 7.0E-07 mg/kg-day NA NA 8.2E-06 mg/kg-day 9.6E-04 mg/kg-day 8.6E-03
Vanadium 5.0E+01 mg/kg 1.1E-07 mg/kg-day NA NA 1.3E-06 mg/kg-day 5.0E-03 mg/kg-day 2.6E-04
Exp. Route Total 8.2E-05 1.6E-01
Exposure Point Total 9.5E-05 2.0E-01
9.5E-05 2.0E-01
Exposed Surface Sediment Total 9.5E-05 2.0E-01
Exposure Medium Total
TABLE 7.2.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Dry event) Benzene 2.2E+00 ug/L 3.1E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 1.7E-09 3.6E-07 mg/kg-day 4.0E-03 mg/kg-day 9.1E-05
Benzo(a)anthracene (12-16)* 2.7E-01 ug/L 2.5E-09 mg/kg-day 2.2E+00 1/(mg/kg-day) 5.4E-09 4.3E-08 mg/kg-day NA NA
Benzo(a)anthracene (16-18)* 2.7E-01 ug/L 1.2E-09 mg/kg-day 7.3E-01 1/(mg/kg-day) 9.0E-10
Benzo(a)pyrene (12-16)* 6.6E-01 ug/L 6.1E-09 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.3E-07 1.1E-07 mg/kg-day NA NA
Benzo(a)pyrene (16-18)* 6.6E-01 ug/L 3.1E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.2E-08
Benzo(b)fluoranthene (12-16)* 3.0E-01 ug/L 2.8E-09 mg/kg-day 2.2E+00 1/(mg/kg-day) 6.1E-09 4.9E-08 mg/kg-day NA NA
Benzo(b)fluoranthene (16-18)* 3.0E-01 ug/L 1.4E-09 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.0E-09
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 3.4E-08 mg/kg-day 1.4E-02 1/(mg/kg-day) 4.8E-10 4.0E-07 mg/kg-day 2.0E-02 mg/kg-day 2.0E-05
Indeno(1,2,3-c,d)pyrene (12-16)* 1.3E-01 ug/L 1.2E-09 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.7E-09 2.1E-08 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (16-18)* 1.3E-01 ug/L 6.1E-10 mg/kg-day 7.3E-01 1/(mg/kg-day) 4.5E-10
Arsenic 2.0E+01 ug/L 2.8E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.2E-07 3.2E-06 mg/kg-day 3.0E-04 mg/kg-day 1.1E-02
Chromium (12-16)* 1.9E+01 ug/L 1.8E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.6E-07 3.1E-06 mg/kg-day 3.0E-03 mg/kg-day 1.0E-03
Chromium (16-18)* 1.9E+01 ug/L 8.8E-08 mg/kg-day 5.0E-01 1/(mg/kg-day) 4.4E-08
Copper 1.7E+02 ug/L 2.4E-06 mg/kg-day NA 2.8E-05 mg/kg-day 4.0E-02 mg/kg-day 7.0E-04
Selenium 4.1E+01 ug/L 5.7E-07 mg/kg-day NA 6.7E-06 mg/kg-day 5.0E-03 mg/kg-day 1.3E-03
Exp. Route Total 9.0E-07 1.4E-02
Dermal
Benzene 2.2E+00 ug/L 1.7E-07 mg/kg-day 5.5E-02 1/(mg/kg-day) 9.6E-09 2.0E-06 mg/kg-day 4.0E-03 mg/kg-day 5.1E-04
Benzo(a)anthracene (12-16)* 2.7E-01 ug/L 8.9E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.0E-06 1.6E-05 mg/kg-day NA NA
Benzo(a)anthracene (16-18)* 2.7E-01 ug/L 4.5E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 3.3E-07
Benzo(a)pyrene (12-16)* 6.6E-01 ug/L 3.8E-06 mg/kg-day 2.2E+01 1/(mg/kg-day) 8.3E-05 6.7E-05 mg/kg-day NA NA
Benzo(a)pyrene (16-18)* 6.6E-01 ug/L 1.9E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.4E-05
Benzo(b)fluoranthene (12-16)* 3.0E-01 ug/L 1.7E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 3.8E-06 3.1E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (16-18)* 3.0E-01 ug/L 8.7E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 6.4E-07
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 1.5E-06 mg/kg-day 1.4E-02 1/(mg/kg-day) 2.1E-08 1.8E-05 mg/kg-day 2.0E-02 mg/kg-day 8.8E-04
Indeno(1,2,3-c,d)pyrene (12-16)* 1.3E-01 ug/L 7.7E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.7E-06 1.4E-05 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (16-18)* 1.3E-01 ug/L 3.9E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 2.8E-07
Arsenic 2.0E+01 ug/L 8.7E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.3E-07 1.0E-06 mg/kg-day 3.0E-04 mg/kg-day 3.4E-03
Chromium (12-16)* 1.9E+01 ug/L 1.1E-07 mg/kg-day 6.0E+01 1/(mg/kg-day) 6.6E-06 1.9E-06 mg/kg-day 7.5E-05 mg/kg-day 2.6E-02
Chromium (16-18)* 1.9E+01 ug/L 5.5E-08 mg/kg-day 2.0E+01 1/(mg/kg-day) 1.1E-06
Copper 1.7E+02 ug/L 7.5E-07 mg/kg-day NA NA 8.8E-06 mg/kg-day 4.0E-02 mg/kg-day 2.2E-04
Selenium 4.1E+01 ug/L 1.8E-07 mg/kg-day NA NA 2.1E-06 mg/kg-day 5.0E-03 mg/kg-day 4.2E-04
Exp. Route Total 1.1E-04 3.1E-02
Exposure Point Total 1.1E-04 4.5E-02
1.1E-04 4.5E-02
Surface Water Total - Dry Event 1.1E-04 4.5E-02
Exposure Medium Total
TABLE 7.2.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 8.2E-09 mg/kg-day 5.4E-03 1/(mg/kg-day) 4.4E-11 9.6E-08 mg/kg-day 7.0E-02 mg/kg-day 1.4E-06
Benzene 8.4E-01 ug/L 1.2E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 6.4E-10 1.4E-07 mg/kg-day 4.0E-03 mg/kg-day 3.4E-05
Chloroform 5.6E-01 ug/L 7.8E-09 mg/kg-day 3.1E-02 1/(mg/kg-day) 2.4E-10 9.1E-08 mg/kg-day 1.0E-02 mg/kg-day 9.1E-06
Ethylbenzene 8.7E-01 ug/L 1.2E-08 mg/kg-day 1.1E-02 1/(mg/kg-day) 1.3E-10 1.4E-07 mg/kg-day 1.0E-01 mg/kg-day 1.4E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 3.4E-07 mg/kg-day 5.4E-01 1/(mg/kg-day) 1.8E-07 4.0E-06 mg/kg-day 1.0E-02 mg/kg-day 4.0E-04
Benzo(a)anthracene (12-16)* 1.0E-01 ug/L 9.7E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.1E-09 1.7E-08 mg/kg-day NA NA
Benzo(a)anthracene (16-18)* 1.0E-01 ug/L 4.8E-10 mg/kg-day 7.3E-01 1/(mg/kg-day) 3.5E-10
Benzo(a)pyrene (12-16)* 2.1E-01 ug/L 1.9E-09 mg/kg-day 2.2E+01 1/(mg/kg-day) 4.2E-08 3.3E-08 mg/kg-day NA NA
Benzo(a)pyrene (16-18)* 2.1E-01 ug/L 9.5E-10 mg/kg-day 7.3E+00 1/(mg/kg-day) 6.9E-09
Benzo(b)fluoranthene (12-16)* 1.9E-01 ug/L 1.8E-09 mg/kg-day 2.2E+00 1/(mg/kg-day) 3.8E-09 3.1E-08 mg/kg-day NA NA
Benzo(b)fluoranthene (16-18)* 1.9E-01 ug/L 8.8E-10 mg/kg-day 7.3E-01 1/(mg/kg-day) 6.4E-10
Dibenz(a,h)anthracene (12-16)* 1.0E-01 ug/L 9.4E-10 mg/kg-day 2.2E+01 1/(mg/kg-day) 2.1E-08 1.6E-08 mg/kg-day NA NA
Dibenz(a,h)anthracene (16-18)* 1.0E-01 ug/L 4.7E-10 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.4E-09
Indeno(1,2,3-c,d)pyrene (12-16)* 5.0E-01 ug/L 4.6E-09 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.0E-08 8.1E-08 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (16-18)* 5.0E-01 ug/L 2.3E-09 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.7E-09
Naphthalene 3.6E-01 ug/L 5.1E-09 mg/kg-day NA NA 5.9E-08 mg/kg-day 2.0E-02 mg/kg-day 3.0E-06
Arsenic 1.7E+01 ug/L 2.3E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 3.5E-07 2.7E-06 mg/kg-day 3.0E-04 mg/kg-day 9.0E-03
Chromium (12-16)* 8.5E+00 ug/L 7.9E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.2E-07 1.4E-06 mg/kg-day 3.0E-03 mg/kg-day 4.6E-04
Chromium (16-18)* 8.5E+00 ug/L 4.0E-08 mg/kg-day 5.0E-01 1/(mg/kg-day) 2.0E-08
Cobalt 3.9E+00 ug/L 5.4E-08 mg/kg-day NA NA 6.3E-07 mg/kg-day 3.0E-04 mg/kg-day 2.1E-03
Lead 1.5E+01 ug/L 2.1E-07 mg/kg-day NA NA 2.4E-06 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 4.7E-07 mg/kg-day NA NA 5.5E-06 mg/kg-day 5.0E-03 mg/kg-day 1.1E-03
Exp. Route Total 7.6E-07 1.3E-02
TABLE 7.2.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Dermal
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 1.6E-07 mg/kg-day 5.4E-03 1/(mg/kg-day) 8.7E-10 1.9E-06 mg/kg-day 7.0E-02 mg/kg-day 2.7E-05
Benzene 8.4E-01 ug/L 6.5E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 3.6E-09 7.6E-07 mg/kg-day 4.0E-03 mg/kg-day 1.9E-04
Chloroform 5.6E-01 ug/L 2.3E-08 mg/kg-day 3.1E-02 1/(mg/kg-day) 7.1E-10 2.7E-07 mg/kg-day 1.0E-02 mg/kg-day 2.7E-05
Ethylbenzene 8.7E-01 ug/L 2.3E-07 mg/kg-day 1.1E-02 1/(mg/kg-day) 2.5E-09 2.7E-06 mg/kg-day 1.0E-01 mg/kg-day 2.7E-05
Tetrachloroethylene(PCE) 2.4E+01 ug/L 5.9E-06 mg/kg-day 5.4E-01 1/(mg/kg-day) 3.2E-06 6.9E-05 mg/kg-day 1.0E-02 mg/kg-day 6.9E-03
Benzo(a)anthracene (12-16)* 1.0E-01 ug/L 3.5E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 7.6E-07 6.1E-06 mg/kg-day NA NA
Benzo(a)anthracene (16-18)* 1.0E-01 ug/L 5.9E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 4.3E-07
Benzo(a)pyrene (12-16)* 2.1E-01 ug/L 1.2E-06 mg/kg-day 2.2E+01 1/(mg/kg-day) 2.6E-05 2.1E-05 mg/kg-day NA NA
Benzo(a)pyrene (16-18)* 2.1E-01 ug/L 5.5E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.0E-06
Benzo(b)fluoranthene (12-16)* 1.9E-01 ug/L 1.1E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.4E-06 1.9E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (16-18)* 1.9E-01 ug/L 4.5E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 3.3E-07
Dibenz(a,h)anthracene (12-16)* 1.0E-01 ug/L 9.0E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 2.0E-05 1.6E-05 mg/kg-day NA NA
Dibenz(a,h)anthracene (16-18)* 1.0E-01 ug/L 1.5E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.1E-05
Indeno(1,2,3-c,d)pyrene (12-16)* 5.0E-01 ug/L 2.9E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 6.4E-06 5.1E-05 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (16-18)* 5.0E-01 ug/L 3.4E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 2.5E-08
Naphthalene 3.6E-01 ug/L 1.0E-07 mg/kg-day NA NA 1.2E-06 mg/kg-day 2.0E-02 mg/kg-day 5.9E-05
Arsenic 1.7E+01 ug/L 7.3E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.1E-07 8.5E-07 mg/kg-day 3.0E-04 mg/kg-day 2.8E-03
Chromium (12-16)* 8.5E+00 ug/L 5.0E-08 mg/kg-day 6.0E+01 1/(mg/kg-day) 3.0E-06 8.7E-07 mg/kg-day 7.5E-05 mg/kg-day 1.2E-02
Chromium (16-18)* 8.5E+00 ug/L 2.5E-08 mg/kg-day 2.0E+01 1/(mg/kg-day) 5.0E-07
Cobalt 3.9E+00 ug/L 6.8E-09 mg/kg-day NA NA 8.0E-08 mg/kg-day 3.0E-04 mg/kg-day 2.7E-04
Lead 1.5E+01 ug/L 6.5E-09 mg/kg-day NA NA 7.6E-08 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 1.5E-07 mg/kg-day NA NA 1.7E-06 mg/kg-day 5.0E-03 mg/kg-day 3.4E-04
Exp. Route Total 7.7E-05 2.2E-02
Exposure Point Total 7.8E-05 3.5E-02
7.8E-05 3.5E-02
Surface Water Total - Wet Event 7.8E-05 3.5E-02
Air AirAmbient air at canal
levelInhalation
(pre-aeration system Benzene 9.1E-04 mg/m3 6.0E-04 ug/m3 7.8E-06 1/(ug/m3) 4.7E-09 7.1E-06 mg/m3 3.0E-02 mg/m32.4E-04
operation) Chloroform 2.2E-04 mg/m3 1.5E-04 ug/m3 2.3E-05 1/(ug/m3) 3.4E-09 1.7E-06 mg/m3 9.8E-02 mg/m31.7E-05
Ethylbenzene 2.3E-03 mg/m3 1.5E-03 ug/m3 2.5E-06 1/(ug/m3) 3.7E-09 1.7E-05 mg/m3 1.0E+00 mg/m31.7E-05
Xylene, total 1.0E-02 mg/m3 6.7E-03 ug/m3 NA NA 7.8E-05 mg/m3 1.0E-01 mg/m37.8E-04
Naphthalene 2.1E-03 mg/m3 1.4E-03 ug/m3 3.4E-05 1/(ug/m3) 4.7E-08 1.6E-05 mg/m3 3.0E-03 mg/m35.4E-03
Exp. Route Total 5.9E-08 6.4E-03
Exposure Point Total 5.9E-08 6.4E-03
5.9E-08 6.4E-03
Ambient air at canal level Total - Pre-aeration system operation 5.9E-08 6.4E-03
Exposure Medium Total
Exposure Medium Total
TABLE 7.2.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Air AirAmbient air at canal
levelInhalation
(after aeration system Benzene 1.9E-03 mg/m3 1.3E-03 ug/m3 7.8E-06 1/(ug/m3) 1.0E-08 1.5E-05 mg/m3 3.0E-02 mg/m35.0E-04
started) Chloroform 2.1E-04 mg/m3 1.4E-04 ug/m3 2.3E-05 1/(ug/m3) 3.1E-09 1.6E-06 mg/m3 9.8E-02 mg/m31.6E-05
Ethylbenzene 2.1E-03 mg/m3 1.4E-03 ug/m3 2.5E-06 1/(ug/m3) 3.5E-09 1.6E-05 mg/m3 1.0E+00 mg/m31.6E-05
Xylene, total 1.7E-02 mg/m3 1.1E-02 ug/m3 NA NA 1.3E-04 mg/m3 1.0E-01 mg/m31.3E-03
Naphthalene 2.2E-03 mg/m3 1.4E-03 ug/m3 3.4E-05 1/(ug/m3) 4.9E-08 1.7E-05 mg/m3 3.0E-03 mg/m35.6E-03
Exp. Route Total 6.6E-08 7.5E-03
Exposure Point Total 6.6E-08 7.5E-03
6.6E-08 7.5E-03
Ambient air at canal level Total - After aeration system turned on 6.6E-08 7.5E-03
Total Total of Receptor Risks Across All Media 2.1E-04 Total of Receptor Hazards Across All Media 2.5E-01
Notes-
NA = Not available / Not applicable.
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 3 used to adjust CSF for 12-16 year old for exposure duration of 4 years, ADAF of 1 used to adjust CSF for 16-18 year old for exposure duration of 2 years.
Non-cancer calculations shown under 12-16 year old only, as non-cancer calculations are not adjusted for MMOA.
DAevent for surface water from dry event calculated on Table 7.1.RME Supplement A.
DAevent for surface water from wet event calculated on Table 7.1.RME Supplement B.
Total includes sum of exposed and near shore sediment, maximum of dry event and wet event surface water, and maximum of air prior to areation system operation and after aeration system started.
Exposure Medium Total
TABLE 7.3.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Ingestion
Acenaphthene 3.7E+02 mg/kg 1.5E-05 mg/kg-day NA NA 1.7E-04 mg/kg-day 6.0E-02 mg/kg-day 2.9E-03
Benzo(a)anthracene (0-2)* 1.3E+02 mg/kg 1.7E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.3E-05 6.0E-05 mg/kg-day NA NA
Benzo(a)anthracene (2-6)* 1.3E+02 mg/kg 3.4E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 7.5E-06
Benzo(a)pyrene (0-2)* 1.1E+02 mg/kg 1.5E-06 mg/kg-day 7.3E+01 1/(mg/kg-day) 1.1E-04 5.1E-05 mg/kg-day NA NA
Benzo(a)pyrene (2-6)* 1.1E+02 mg/kg 2.9E-06 mg/kg-day 2.2E+01 1/(mg/kg-day) 6.4E-05
Benzo(b)fluoranthene (0-2)* 1.1E+02 mg/kg 1.5E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.1E-05 5.4E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (2-6)* 1.1E+02 mg/kg 3.1E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 6.7E-06
Benzo(k)fluoranthene (0-2)* 6.5E+01 mg/kg 8.8E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 6.4E-07 3.1E-05 mg/kg-day NA NA
Benzo(k)fluoranthene (2-6)* 6.5E+01 mg/kg 1.8E-06 mg/kg-day 2.2E-01 1/(mg/kg-day) 3.8E-07
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 1.4E-06 mg/kg-day 1.4E-02 1/(mg/kg-day) 1.9E-08 1.6E-05 mg/kg-day 2.0E-02 mg/kg-day 7.9E-04
Chrysene (0-2)* 2.5E+02 mg/kg 3.4E-06 mg/kg-day 7.3E-02 1/(mg/kg-day) 2.5E-07 1.2E-04 mg/kg-day NA NA
Chrysene (2-6)* 2.5E+02 mg/kg 6.9E-06 mg/kg-day 2.2E-02 1/(mg/kg-day) 1.5E-07
Dibenz(a,h)anthracene (0-2)* 6.2E+00 mg/kg 8.4E-08 mg/kg-day 7.3E+01 1/(mg/kg-day) 6.1E-06 2.9E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (2-6)* 6.2E+00 mg/kg 1.7E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 3.7E-06
Fluoranthene 5.0E+02 mg/kg 2.0E-05 mg/kg-day NA NA 2.4E-04 mg/kg-day 4.0E-02 mg/kg-day 5.9E-03
Indeno(1,2,3-c,d)pyrene (0-2)* 4.9E+01 mg/kg 6.6E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.8E-06 2.3E-05 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-6)* 4.9E+01 mg/kg 1.3E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.9E-06
Naphthalene 3.4E+00 mg/kg 1.4E-07 mg/kg-day NA NA 1.6E-06 mg/kg-day 2.0E-02 mg/kg-day 8.1E-05
Pyrene 5.3E+02 mg/kg 2.2E-05 mg/kg-day NA NA 2.5E-04 mg/kg-day 3.0E-02 mg/kg-day 8.4E-03
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 1.6E-12 mg/kg-day 1.6E+05 1/(mg/kg-day) 2.6E-07 1.9E-11 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 2.1E-07 mg/kg-day 2.0E+00 1/(mg/kg-day) 4.3E-07 2.5E-06 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 2.2E-07 mg/kg-day NA NA 2.6E-06 mg/kg-day 2.0E-05 mg/kg-day 1.3E-01
Aluminum 1.6E+04 mg/kg 6.5E-04 mg/kg-day NA NA 7.6E-03 mg/kg-day 1.0E+00 mg/kg-day 7.6E-03
Arsenic 1.8E+01 mg/kg 7.3E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.1E-06 8.5E-06 mg/kg-day 3.0E-04 mg/kg-day 2.8E-02
Cadmium 9.6E+00 mg/kg 3.9E-07 mg/kg-day NA NA 4.6E-06 mg/kg-day 1.0E-03 mg/kg-day 4.6E-03
Chromium (0-2)* 9.4E+01 mg/kg 1.3E-06 mg/kg-day 5.0E+00 1/(mg/kg-day) 6.3E-06 4.4E-05 mg/kg-day 3.0E-03 mg/kg-day 1.5E-02
Chromium (2-6)* 9.4E+01 mg/kg 2.5E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 3.8E-06
Cobalt 1.3E+01 mg/kg 5.3E-07 mg/kg-day NA NA 6.1E-06 mg/kg-day 3.0E-04 mg/kg-day 2.0E-02
Copper 3.5E+02 mg/kg 1.4E-05 mg/kg-day NA NA 1.7E-04 mg/kg-day 4.0E-02 mg/kg-day 4.2E-03
Iron 4.0E+04 mg/kg 1.6E-03 mg/kg-day NA NA 1.9E-02 mg/kg-day 7.0E-01 mg/kg-day 2.7E-02
Lead 1.9E+03 mg/kg 7.6E-05 mg/kg-day NA NA 8.9E-04 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 1.3E-05 mg/kg-day NA NA 1.5E-04 mg/kg-day 1.4E-01 mg/kg-day 1.1E-03
Vanadium 5.0E+01 mg/kg 2.0E-06 mg/kg-day NA NA 2.4E-05 mg/kg-day 5.0E-03 mg/kg-day 4.8E-03
Exp. Route Total 2.4E-04 2.6E-01
TABLE 7.3.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Dermal
Acenaphthene 3.7E+02 mg/kg 1.1E-05 mg/kg-day NA NA 1.3E-04 mg/kg-day 6.0E-02 mg/kg-day 2.1E-03
Benzo(a)anthracene (0-2)* 1.3E+02 mg/kg 1.3E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 9.2E-06 4.4E-05 mg/kg-day NA NA
Benzo(a)anthracene (2-6)* 1.3E+02 mg/kg 2.5E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 5.5E-06
Benzo(a)pyrene (0-2)* 1.1E+02 mg/kg 1.1E-06 mg/kg-day 7.3E+01 1/(mg/kg-day) 7.7E-05 3.7E-05 mg/kg-day NA NA
Benzo(a)pyrene (2-6)* 1.1E+02 mg/kg 2.1E-06 mg/kg-day 2.2E+01 1/(mg/kg-day) 4.6E-05
Benzo(b)fluoranthene (0-2)* 1.1E+02 mg/kg 1.1E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 8.1E-06 3.9E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (2-6)* 1.1E+02 mg/kg 2.2E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 4.9E-06
Benzo(k)fluoranthene (0-2)* 6.5E+01 mg/kg 6.4E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 4.7E-07 2.2E-05 mg/kg-day NA NA
Benzo(k)fluoranthene (2-6)* 6.5E+01 mg/kg 1.3E-06 mg/kg-day 2.2E-01 1/(mg/kg-day) 2.8E-07
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 7.6E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 1.1E-08 8.9E-06 mg/kg-day 2.0E-02 mg/kg-day 4.4E-04
Chrysene (0-2)* 2.5E+02 mg/kg 2.5E-06 mg/kg-day 7.3E-02 1/(mg/kg-day) 1.8E-07 8.7E-05 mg/kg-day NA NA
Chrysene (2-6)* 2.5E+02 mg/kg 5.0E-06 mg/kg-day 2.2E-02 1/(mg/kg-day) 1.1E-07
Dibenz(a,h)anthracene (0-2)* 6.2E+00 mg/kg 6.1E-08 mg/kg-day 7.3E+01 1/(mg/kg-day) 4.5E-06 2.1E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (2-6)* 6.2E+00 mg/kg 1.2E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 2.7E-06
Fluoranthene 5.0E+02 mg/kg 1.5E-05 mg/kg-day NA NA 1.7E-04 mg/kg-day 4.0E-02 mg/kg-day 4.3E-03
Indeno(1,2,3-c,d)pyrene (0-2)* 4.9E+01 mg/kg 4.8E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.5E-06 1.7E-05 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-6)* 4.9E+01 mg/kg 9.7E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.1E-06
Naphthalene 3.4E+00 mg/kg 1.0E-07 mg/kg-day NA NA 1.2E-06 mg/kg-day 2.0E-02 mg/kg-day 5.9E-05
Pyrene 5.3E+02 mg/kg 1.6E-05 mg/kg-day NA NA 1.8E-04 mg/kg-day 3.0E-02 mg/kg-day 6.1E-03
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 1.3E-12 mg/kg-day 1.6E+05 1/(mg/kg-day) 2.0E-07 1.5E-11 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 1.7E-07 mg/kg-day 2.0E+00 1/(mg/kg-day) 3.3E-07 1.9E-06 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 1.7E-07 mg/kg-day NA NA 2.0E-06 mg/kg-day 2.0E-05 mg/kg-day 1.0E-01
Aluminum 1.6E+04 mg/kg 3.6E-05 mg/kg-day NA NA 4.2E-04 mg/kg-day 1.0E+00 mg/kg-day 4.2E-04
Arsenic 1.8E+01 mg/kg 1.2E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.8E-07 1.4E-06 mg/kg-day 3.0E-04 mg/kg-day 4.8E-03
Cadmium 9.6E+00 mg/kg 2.2E-09 mg/kg-day NA NA 2.6E-08 mg/kg-day 2.5E-05 mg/kg-day 1.0E-03
Chromium (0-2)* 9.4E+01 mg/kg 7.1E-08 mg/kg-day 2.0E+02 1/(mg/kg-day) 1.4E-05 2.5E-06 mg/kg-day 7.5E-05 mg/kg-day 3.3E-02
Chromium (2-6)* 9.4E+01 mg/kg 1.4E-07 mg/kg-day 6.0E+01 1/(mg/kg-day) 8.5E-06
Cobalt 1.3E+01 mg/kg 2.9E-08 mg/kg-day NA NA 3.4E-07 mg/kg-day 3.0E-04 mg/kg-day 1.1E-03
Copper 3.5E+02 mg/kg 8.0E-07 mg/kg-day NA NA 9.4E-06 mg/kg-day 4.0E-02 mg/kg-day 2.3E-04
Iron 4.0E+04 mg/kg 9.1E-05 mg/kg-day NA NA 1.1E-03 mg/kg-day 7.0E-01 mg/kg-day 1.5E-03
Lead 1.9E+03 mg/kg 4.3E-06 mg/kg-day NA NA 5.0E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 7.2E-07 mg/kg-day NA NA 8.4E-06 mg/kg-day 9.6E-04 mg/kg-day 8.7E-03
Vanadium 5.0E+01 mg/kg 1.1E-07 mg/kg-day NA NA 1.3E-06 mg/kg-day 5.0E-03 mg/kg-day 2.7E-04
Exp. Route Total 1.9E-04 1.6E-01
Exposure Point Total 4.3E-04 4.2E-01
4.3E-04 4.2E-01
Exposed Surface Sediment Total 4.3E-04 4.2E-01
Exposure Medium Total
TABLE 7.3.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Dry event) Benzene 2.2E+00 ug/L 1.2E-07 mg/kg-day 5.5E-02 1/(mg/kg-day) 6.5E-09 1.4E-06 mg/kg-day 4.0E-03 mg/kg-day 3.5E-04
Benzo(a)anthracene (0-2)* 2.7E-01 ug/L 4.7E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.4E-08 1.6E-07 mg/kg-day NA NA
Benzo(a)anthracene (2-6)* 2.7E-01 ug/L 9.4E-09 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.1E-08
Benzo(a)pyrene (0-2)* 6.6E-01 ug/L 1.2E-08 mg/kg-day 7.3E+01 1/(mg/kg-day) 8.5E-07 4.1E-07 mg/kg-day NA NA
Benzo(a)pyrene (2-6)* 6.6E-01 ug/L 2.3E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 5.1E-07
Benzo(b)fluoranthene (0-2)* 3.0E-01 ug/L 5.3E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.8E-08 1.8E-07 mg/kg-day NA NA
Benzo(b)fluoranthene (2-6)* 3.0E-01 ug/L 1.1E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.3E-08
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 1.3E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 1.8E-09 1.5E-06 mg/kg-day 2.0E-02 mg/kg-day 7.6E-05
Indeno(1,2,3-c,d)pyrene (0-2)* 1.3E-01 ug/L 2.3E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.7E-08 8.1E-08 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-6)* 1.3E-01 ug/L 4.7E-09 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.0E-08
Arsenic 2.0E+01 ug/L 1.1E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.6E-06 1.2E-05 mg/kg-day 3.0E-04 mg/kg-day 4.1E-02
Chromium (0-2)* 1.9E+01 ug/L 3.3E-07 mg/kg-day 5.0E+00 1/(mg/kg-day) 1.7E-06 1.2E-05 mg/kg-day 3.0E-03 mg/kg-day 3.9E-03
Chromium (2-6)* 1.9E+01 ug/L 6.7E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.0E-06
Copper 1.7E+02 ug/L 9.1E-06 mg/kg-day NA 1.1E-04 mg/kg-day 4.0E-02 mg/kg-day 2.7E-03
Selenium 4.1E+01 ug/L 2.2E-06 mg/kg-day NA 2.5E-05 mg/kg-day 5.0E-03 mg/kg-day 5.1E-03
Exp. Route Total 5.8E-06 5.3E-02
Dermal
Benzene 2.2E+00 ug/L 2.8E-07 mg/kg-day 5.5E-02 1/(mg/kg-day) 1.5E-08 3.2E-06 mg/kg-day 4.0E-03 mg/kg-day 8.1E-04
Benzo(a)anthracene (0-2)* 2.7E-01 ug/L 7.1E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 5.2E-06 2.5E-05 mg/kg-day NA NA
Benzo(a)anthracene (2-6)* 2.7E-01 ug/L 1.4E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 3.1E-06
Benzo(a)pyrene (0-2)* 6.6E-01 ug/L 3.0E-06 mg/kg-day 7.3E+01 1/(mg/kg-day) 2.2E-04 1.1E-04 mg/kg-day NA NA
Benzo(a)pyrene (2-6)* 6.6E-01 ug/L 6.0E-06 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.3E-04
Benzo(b)fluoranthene (0-2)* 3.0E-01 ug/L 1.4E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.0E-05 4.9E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (2-6)* 3.0E-01 ug/L 2.8E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 6.1E-06
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 2.4E-06 mg/kg-day 1.4E-02 1/(mg/kg-day) 3.4E-08 2.8E-05 mg/kg-day 2.0E-02 mg/kg-day 1.4E-03
Indeno(1,2,3-c,d)pyrene (0-2)* 1.3E-01 ug/L 6.1E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.5E-06 2.2E-05 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-6)* 1.3E-01 ug/L 1.2E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.7E-06
Arsenic 2.0E+01 ug/L 1.4E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.1E-07 1.6E-06 mg/kg-day 3.0E-04 mg/kg-day 5.4E-03
Chromium (0-2)* 1.9E+01 ug/L 8.8E-08 mg/kg-day 2.0E+02 1/(mg/kg-day) 1.8E-05 3.1E-06 mg/kg-day 7.5E-05 mg/kg-day 4.1E-02
Chromium (2-6)* 1.9E+01 ug/L 1.8E-07 mg/kg-day 6.0E+01 1/(mg/kg-day) 1.1E-05
Copper 1.7E+02 ug/L 1.2E-06 mg/kg-day NA NA 1.4E-05 mg/kg-day 4.0E-02 mg/kg-day 3.5E-04
Selenium 4.1E+01 ug/L 2.9E-07 mg/kg-day NA NA 3.3E-06 mg/kg-day 5.0E-03 mg/kg-day 6.7E-04
Exp. Route Total 4.1E-04 5.0E-02
Exposure Point Total 4.2E-04 1.0E-01
4.2E-04 1.0E-01
Surface Water Total - Dry Event 4.2E-04 1.0E-01
Exposure Medium Total
TABLE 7.3.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 3.1E-08 mg/kg-day 5.4E-03 1/(mg/kg-day) 1.7E-10 3.6E-07 mg/kg-day 7.0E-02 mg/kg-day 5.2E-06
Benzene 8.4E-01 ug/L 4.4E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 2.4E-09 5.2E-07 mg/kg-day 4.0E-03 mg/kg-day 1.3E-04
Chloroform 5.6E-01 ug/L 3.0E-08 mg/kg-day 3.1E-02 1/(mg/kg-day) 9.2E-10 3.5E-07 mg/kg-day 1.0E-02 mg/kg-day 3.5E-05
Ethylbenzene 8.7E-01 ug/L 4.6E-08 mg/kg-day 1.1E-02 1/(mg/kg-day) 5.1E-10 5.4E-07 mg/kg-day 1.0E-01 mg/kg-day 5.4E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 1.3E-06 mg/kg-day 5.4E-01 1/(mg/kg-day) 7.0E-07 1.5E-05 mg/kg-day 1.0E-02 mg/kg-day 1.5E-03
Benzo(a)anthracene (0-2)* 1.0E-01 ug/L 1.8E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.3E-08 6.4E-08 mg/kg-day NA NA
Benzo(a)anthracene (2-6)* 1.0E-01 ug/L 3.7E-09 mg/kg-day 2.2E+00 1/(mg/kg-day) 8.0E-09
Benzo(a)pyrene (0-2)* 2.1E-01 ug/L 3.6E-09 mg/kg-day 7.3E+01 1/(mg/kg-day) 2.6E-07 1.3E-07 mg/kg-day NA NA
Benzo(a)pyrene (2-6)* 2.1E-01 ug/L 7.2E-09 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.6E-07
Benzo(b)fluoranthene (0-2)* 1.9E-01 ug/L 3.3E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.4E-08 1.2E-07 mg/kg-day NA NA
Benzo(b)fluoranthene (2-6)* 1.9E-01 ug/L 6.7E-09 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.5E-08
Dibenz(a,h)anthracene (0-2)* 1.0E-01 ug/L 1.8E-09 mg/kg-day 7.3E+01 1/(mg/kg-day) 1.3E-07 6.2E-08 mg/kg-day NA NA
Dibenz(a,h)anthracene (2-6)* 1.0E-01 ug/L 3.6E-09 mg/kg-day 2.2E+01 1/(mg/kg-day) 7.8E-08
Indeno(1,2,3-c,d)pyrene (0-2)* 5.0E-01 ug/L 8.8E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 6.4E-08 3.1E-07 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-6)* 5.0E-01 ug/L 1.8E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 3.9E-08
Naphthalene 3.6E-01 ug/L 1.9E-08 mg/kg-day NA NA 2.2E-07 mg/kg-day 2.0E-02 mg/kg-day 1.1E-05
Arsenic 1.7E+01 ug/L 8.8E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.3E-06 1.0E-05 mg/kg-day 3.0E-04 mg/kg-day 3.4E-02
Chromium (0-2)* 8.5E+00 ug/L 1.5E-07 mg/kg-day 5.0E+00 1/(mg/kg-day) 7.5E-07 5.3E-06 mg/kg-day 3.0E-03 mg/kg-day 1.8E-03
Chromium (2-6)* 8.5E+00 ug/L 3.0E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.5E-07
Cobalt 3.9E+00 ug/L 2.1E-07 mg/kg-day NA NA 2.4E-06 mg/kg-day 3.0E-04 mg/kg-day 8.0E-03
Lead 1.5E+01 ug/L 7.9E-07 mg/kg-day NA NA 9.2E-06 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 1.8E-06 mg/kg-day NA NA 2.1E-05 mg/kg-day 5.0E-03 mg/kg-day 4.1E-03
Exp. Route Total 4.0E-06 5.0E-02
TABLE 7.3.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Dermal
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 2.6E-07 mg/kg-day 5.4E-03 1/(mg/kg-day) 1.4E-09 3.0E-06 mg/kg-day 7.0E-02 mg/kg-day 4.3E-05
Benzene 8.4E-01 ug/L 1.0E-07 mg/kg-day 5.5E-02 1/(mg/kg-day) 5.7E-09 1.2E-06 mg/kg-day 4.0E-03 mg/kg-day 3.0E-04
Chloroform 5.6E-01 ug/L 3.6E-08 mg/kg-day 3.1E-02 1/(mg/kg-day) 1.1E-09 4.2E-07 mg/kg-day 1.0E-02 mg/kg-day 4.2E-05
Ethylbenzene 8.7E-01 ug/L 3.6E-07 mg/kg-day 1.1E-02 1/(mg/kg-day) 4.0E-09 4.2E-06 mg/kg-day 1.0E-01 mg/kg-day 4.2E-05
Tetrachloroethylene(PCE) 2.4E+01 ug/L 9.4E-06 mg/kg-day 5.4E-01 1/(mg/kg-day) 5.1E-06 1.1E-04 mg/kg-day 1.0E-02 mg/kg-day 1.1E-02
Benzo(a)anthracene (0-2)* 1.0E-01 ug/L 2.8E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.0E-06 9.7E-06 mg/kg-day NA NA
Benzo(a)anthracene (2-6)* 1.0E-01 ug/L 5.6E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.2E-06
Benzo(a)pyrene (0-2)* 2.1E-01 ug/L 9.4E-07 mg/kg-day 7.3E+01 1/(mg/kg-day) 6.9E-05 3.3E-05 mg/kg-day NA NA
Benzo(a)pyrene (2-6)* 2.1E-01 ug/L 1.9E-06 mg/kg-day 2.2E+01 1/(mg/kg-day) 4.1E-05
Benzo(b)fluoranthene (0-2)* 1.9E-01 ug/L 8.8E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 6.4E-06 3.1E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (2-6)* 1.9E-01 ug/L 1.8E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 3.8E-06
Dibenz(a,h)anthracene (0-2)* 1.0E-01 ug/L 7.1E-07 mg/kg-day 7.3E+01 1/(mg/kg-day) 5.2E-05 2.5E-05 mg/kg-day NA NA
Dibenz(a,h)anthracene (2-6)* 1.0E-01 ug/L 1.4E-06 mg/kg-day 2.2E+01 1/(mg/kg-day) 3.1E-05
Indeno(1,2,3-c,d)pyrene (0-2)* 5.0E-01 ug/L 2.3E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.7E-05 8.1E-05 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-6)* 5.0E-01 ug/L 4.7E-06 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.0E-05
Naphthalene 3.6E-01 ug/L 1.6E-07 mg/kg-day NA NA 1.9E-06 mg/kg-day 2.0E-02 mg/kg-day 9.4E-05
Arsenic 1.7E+01 ug/L 1.2E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.7E-07 1.4E-06 mg/kg-day 3.0E-04 mg/kg-day 4.5E-03
Chromium (0-2)* 8.5E+00 ug/L 4.0E-08 mg/kg-day 2.0E+02 1/(mg/kg-day) 7.9E-06 1.4E-06 mg/kg-day 7.5E-05 mg/kg-day 1.9E-02
Chromium (2-6)* 8.5E+00 ug/L 7.9E-08 mg/kg-day 6.0E+01 1/(mg/kg-day) 4.8E-06
Cobalt 3.9E+00 ug/L 1.1E-08 mg/kg-day NA NA 1.3E-07 mg/kg-day 3.0E-04 mg/kg-day 4.2E-04
Lead 1.5E+01 ug/L 1.0E-08 mg/kg-day NA NA 1.2E-07 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 2.3E-07 mg/kg-day NA NA 2.7E-06 mg/kg-day 5.0E-03 mg/kg-day 5.5E-04
Exp. Route Total 2.5E-04 3.6E-02
Exposure Point Total 2.6E-04 8.5E-02
2.6E-04 8.5E-02
Surface Water Total - Wet Event 2.6E-04 8.5E-02
Air AirAmbient air at canal
levelInhalation
(pre-aeration system Benzene 9.1E-04 mg/m3 6.0E-04 ug/m3 7.8E-06 1/(ug/m3) 4.7E-09 7.1E-06 mg/m3 3.0E-02 mg/m32.4E-04
operation) Chloroform 2.2E-04 mg/m3 1.5E-04 ug/m3 2.3E-05 1/(ug/m3) 3.4E-09 1.7E-06 mg/m3 9.8E-02 mg/m31.7E-05
Ethylbenzene 2.3E-03 mg/m3 1.5E-03 ug/m3 2.5E-06 1/(ug/m3) 3.7E-09 1.7E-05 mg/m3 1.0E+00 mg/m31.7E-05
Xylene, total 1.0E-02 mg/m3 6.7E-03 ug/m3 NA NA 7.8E-05 mg/m3 1.0E-01 mg/m37.8E-04
Naphthalene 2.1E-03 mg/m3 1.4E-03 ug/m3 3.4E-05 1/(ug/m3) 4.7E-08 1.6E-05 mg/m3 3.0E-03 mg/m35.4E-03
Exp. Route Total 5.9E-08 6.4E-03
Exposure Point Total 5.9E-08 6.4E-03
5.9E-08 6.4E-03
Ambient air at canal level Total - Pre-aeration system operation 5.9E-08 6.4E-03
Exposure Medium Total
Exposure Medium Total
TABLE 7.3.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Air AirAmbient air at canal
levelInhalation
(after aeration system Benzene 1.9E-03 mg/m3 1.3E-03 ug/m3 7.8E-06 1/(ug/m3) 1.0E-08 1.5E-05 mg/m3 3.0E-02 mg/m35.0E-04
started) Chloroform 2.1E-04 mg/m3 1.4E-04 ug/m3 2.3E-05 1/(ug/m3) 3.1E-09 1.6E-06 mg/m3 9.8E-02 mg/m31.6E-05
Ethylbenzene 2.1E-03 mg/m3 1.4E-03 ug/m3 2.5E-06 1/(ug/m3) 3.5E-09 1.6E-05 mg/m3 1.0E+00 mg/m31.6E-05
Xylene, total 1.7E-02 mg/m3 1.1E-02 ug/m3 NA NA 1.3E-04 mg/m3 1.0E-01 mg/m31.3E-03
Naphthalene 2.2E-03 mg/m3 1.4E-03 ug/m3 3.4E-05 1/(ug/m3) 4.9E-08 1.7E-05 mg/m3 3.0E-03 mg/m35.6E-03
Exp. Route Total 6.6E-08 7.5E-03
Exposure Point Total 6.6E-08 7.5E-03
6.6E-08 7.5E-03
Ambient air at canal level Total - After aeration system turned on 6.6E-08 7.5E-03
Total Total of Receptor Risks Across All Media 8.5E-04 Total of Receptor Hazards Across All Media 5.3E-01
Notes-
NA = Not available / Not applicable.
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used to adjust CSF for 0-2 year old for exposure duration of 2 years, ADAF of 3 used to adjust CSF for 2-6 year old for exposure duration of 4 years.
Non-cancer calculations shown under 0-2 year old only, as non-cancer calculations are not adjusted for MMOA.
DAevent for surface water from dry event calculated on Table 7.1.RME Supplement A.
DAevent for surface water from wet event calculated on Table 7.1.RME Supplement B.
Total includes sum of exposed and near shore sediment, maximum of dry event and wet event surface water, and maximum of air prior to areation system operation and after aeration system started
Exposure Medium Total
TABLE 7.4.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Industrial Worker
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Air AirAmbient air at street
levelInhalation
(pre-aeration system Benzene 1.3E-03 mg/m3 3.1E-01 ug/m3 7.8E-06 1/(ug/m3) 2.4E-06 8.6E-04 mg/m3 3.0E-02 mg/m32.9E-02
operation) Chloroform 2.5E-04 mg/m3 6.0E-02 ug/m3 2.3E-05 1/(ug/m3) 1.4E-06 1.7E-04 mg/m3 9.8E-02 mg/m31.7E-03
Ethylbenzene 1.1E-03 mg/m3 2.7E-01 ug/m3 2.5E-06 1/(ug/m3) 6.7E-07 7.5E-04 mg/m3 1.0E+00 mg/m37.5E-04
Naphthalene 1.3E-03 mg/m3 3.2E-01 ug/m3 3.4E-05 1/(ug/m3) 1.1E-05 8.9E-04 mg/m3 3.0E-03 mg/m33.0E-01
Exp. Route Total 1.5E-05 3.3E-01
Exposure Point Total 1.5E-05 3.3E-01
1.5E-05 3.3E-01
Ambient air at street level Total - Pre-aeration system operation 1.5E-05 3.3E-01
Air AirAmbient air at street
levelInhalation
(after aeration system Benzene 1.1E-03 mg/m3 2.7E-01 ug/m3 7.8E-06 1/(ug/m3) 2.1E-06 7.6E-04 mg/m3 3.0E-02 mg/m32.5E-02
started) Chloroform 3.3E-04 mg/m3 8.1E-02 ug/m3 2.3E-05 1/(ug/m3) 1.9E-06 2.3E-04 mg/m3 9.8E-02 mg/m32.3E-03
Ethylbenzene 1.2E-03 mg/m3 3.0E-01 ug/m3 2.5E-06 1/(ug/m3) 7.6E-07 8.5E-04 mg/m3 1.0E+00 mg/m38.5E-04
Naphthalene 3.0E-03 mg/m3 7.4E-01 ug/m3 3.4E-05 1/(ug/m3) 2.5E-05 2.1E-03 mg/m3 3.0E-03 mg/m36.9E-01
Exp. Route Total 3.0E-05 7.2E-01
Exposure Point Total 3.0E-05 7.2E-01
3.0E-05 7.2E-01
Ambient air at street level Total - After aeration system turned on 3.0E-05 7.2E-01
Exposure Medium Total
Exposure Medium Total
TABLE 7.4.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Industrial Worker
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in areas adjacent to Gowanus Canal
associated with canal overflow
Ingestion
2-methylnaphthalene 3.6E+02 mg/kg 4.5E-06 mg/kg-day NA 1/(mg/kg-day) NA 1.3E-05 mg/kg-day 4.0E-03 mg/kg-day 3.2E-03
Acenaphthene 3.1E+02 mg/kg 3.9E-06 mg/kg-day NA NA 1.1E-05 mg/kg-day 6.0E-02 mg/kg-day 1.8E-04
Benzo(a)anthracene 1.3E+02 mg/kg 1.6E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.2E-06 4.5E-06 mg/kg-day NA NA
Benzo(a)pyrene 7.3E+01 mg/kg 9.2E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 6.7E-06 2.6E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 7.9E+01 mg/kg 1.0E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 7.3E-07 2.8E-06 mg/kg-day NA NA
Benzo(k)fluoranthene 4.1E+01 mg/kg 5.2E-07 mg/kg-day 7.3E-02 1/(mg/kg-day) 3.8E-08 1.4E-06 mg/kg-day NA NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.8E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 2.6E-09 5.1E-07 mg/kg-day 2.0E-02 mg/kg-day 2.6E-05
Chrysene 1.3E+02 mg/kg 1.6E-06 mg/kg-day 7.3E-03 1/(mg/kg-day) 1.2E-08 4.5E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 5.5E+00 mg/kg 6.9E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 5.0E-07 1.9E-07 mg/kg-day NA NA
Fluoranthene 1.8E+02 mg/kg 2.3E-06 mg/kg-day NA NA 6.3E-06 mg/kg-day 4.0E-02 mg/kg-day 1.6E-04
Fluorene 2.3E+02 mg/kg 2.9E-06 mg/kg-day NA NA 8.1E-06 mg/kg-day 4.0E-02 mg/kg-day 2.0E-04
Indeno(1,2,3-c,d)pyrene 3.1E+01 mg/kg 4.0E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 2.9E-07 1.1E-06 mg/kg-day NA NA
Naphthalene 6.6E+02 mg/kg 8.2E-06 mg/kg-day NA NA 2.3E-05 mg/kg-day 2.0E-02 mg/kg-day 1.2E-03
Pyrene 3.9E+02 mg/kg 4.9E-06 mg/kg-day NA NA 1.4E-05 mg/kg-day 3.0E-02 mg/kg-day 4.5E-04
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 5.7E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 8.9E-08 1.6E-12 mg/kg-day NA NA
Nondioxin-Like PCB 6.4E+00 mg/kg 8.1E-08 mg/kg-day 2.0E+00 1/(mg/kg-day) 1.6E-07 2.3E-07 mg/kg-day NA NA
Total PCB 6.6E+00 mg/kg 8.3E-08 mg/kg-day NA NA 2.3E-07 mg/kg-day 2.0E-05 mg/kg-day 1.2E-02
Aluminum 1.5E+04 mg/kg 1.8E-04 mg/kg-day NA NA 5.1E-04 mg/kg-day 1.0E+00 mg/kg-day 5.1E-04
Arsenic 1.5E+01 mg/kg 1.8E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.8E-07 5.2E-07 mg/kg-day 3.0E-04 mg/kg-day 1.7E-03
Cadmium 1.0E+01 mg/kg 1.3E-07 mg/kg-day NA NA 3.5E-07 mg/kg-day 1.0E-03 mg/kg-day 3.5E-04
Chromium 8.5E+01 mg/kg 1.1E-06 mg/kg-day 5.0E-01 5.3E-07 3.0E-06 mg/kg-day 3.0E-03 mg/kg-day 9.9E-04
Cobalt 1.1E+01 mg/kg 1.4E-07 mg/kg-day NA NA 3.9E-07 mg/kg-day 3.0E-04 mg/kg-day 1.3E-03
Copper 2.7E+02 mg/kg 3.4E-06 mg/kg-day NA NA 9.7E-06 mg/kg-day 4.0E-02 mg/kg-day 2.4E-04
Iron 3.4E+04 mg/kg 4.2E-04 mg/kg-day NA NA 1.2E-03 mg/kg-day 7.0E-01 mg/kg-day 1.7E-03
Lead 1.2E+03 mg/kg 1.5E-05 mg/kg-day NA NA 4.2E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 3.8E-06 mg/kg-day NA NA 1.1E-05 mg/kg-day 1.4E-01 mg/kg-day 7.7E-05
Vanadium 4.6E+01 mg/kg 5.8E-07 mg/kg-day NA NA 1.6E-06 mg/kg-day 5.0E-03 mg/kg-day 3.2E-04
Exp. Route Total 1.1E-05 2.4E-02
TABLE 7.4.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Industrial Worker
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in areas adjacent to Gowanus Canal
associated with canal overflow
Dermal
2-methylnaphthalene 3.6E+02 mg/kg 3.9E-06 mg/kg-day NA NA 1.1E-05 mg/kg-day 4.0E-03 mg/kg-day 2.7E-03
Acenaphthene 3.1E+02 mg/kg 3.3E-06 mg/kg-day NA NA 9.3E-06 mg/kg-day 6.0E-02 mg/kg-day 1.6E-04
Benzo(a)anthracene 1.3E+02 mg/kg 1.4E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.0E-06 3.9E-06 mg/kg-day NA NA
Benzo(a)pyrene 7.3E+01 mg/kg 7.9E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 5.8E-06 2.2E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 7.9E+01 mg/kg 8.5E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 6.2E-07 2.4E-06 mg/kg-day NA NA
Benzo(k)fluoranthene 4.1E+01 mg/kg 4.4E-07 mg/kg-day 7.3E-02 1/(mg/kg-day) 3.2E-08 1.2E-06 mg/kg-day NA NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.2E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 1.7E-09 3.4E-07 mg/kg-day 2.0E-02 mg/kg-day 1.7E-05
Chrysene 1.3E+02 mg/kg 1.4E-06 mg/kg-day 7.3E-03 1/(mg/kg-day) 1.0E-08 3.8E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 5.5E+00 mg/kg 5.9E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.3E-07 1.7E-07 mg/kg-day NA NA
Fluoranthene 1.8E+02 mg/kg 1.9E-06 mg/kg-day NA NA 5.4E-06 mg/kg-day 4.0E-02 mg/kg-day 1.4E-04
Fluorene 2.3E+02 mg/kg 2.5E-06 mg/kg-day NA NA 7.0E-06 mg/kg-day 4.0E-02 mg/kg-day 1.7E-04
Indeno(1,2,3-c,d)pyrene 3.1E+01 mg/kg 3.4E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 2.5E-07 9.5E-07 mg/kg-day NA NA
Naphthalene 6.6E+02 mg/kg 7.1E-06 mg/kg-day NA NA 2.0E-05 mg/kg-day 2.0E-02 mg/kg-day 9.9E-04
Pyrene 3.9E+02 mg/kg 4.2E-06 mg/kg-day NA NA 1.2E-05 mg/kg-day 3.0E-02 mg/kg-day 3.9E-04
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 5.3E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 8.2E-08 1.5E-12 mg/kg-day NA NA
Nondioxin-Like PCB 6.4E+00 mg/kg 7.5E-08 mg/kg-day 2.0E+00 1/(mg/kg-day) 1.5E-07 2.1E-07 mg/kg-day NA NA
Total PCB 6.6E+00 mg/kg 7.7E-08 mg/kg-day NA NA 2.2E-07 mg/kg-day 2.0E-05 mg/kg-day 1.1E-02
Aluminum 1.5E+04 mg/kg 1.2E-05 mg/kg-day NA NA 3.4E-05 mg/kg-day 1.0E+00 mg/kg-day 3.4E-05
Arsenic 1.5E+01 mg/kg 3.7E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 5.5E-08 1.0E-07 mg/kg-day 3.0E-04 mg/kg-day 3.4E-04
Cadmium 1.0E+01 mg/kg 8.3E-10 mg/kg-day NA NA 2.3E-09 mg/kg-day 2.5E-05 mg/kg-day 9.3E-05
Chromium 8.5E+01 mg/kg 7.0E-08 mg/kg-day 2.0E+01 1/(mg/kg-day) 1.4E-06 2.0E-07 mg/kg-day 7.5E-05 mg/kg-day 2.6E-03
Cobalt 1.1E+01 mg/kg 9.1E-09 mg/kg-day NA NA 2.6E-08 mg/kg-day 3.0E-04 mg/kg-day 8.5E-05
Copper 2.7E+02 mg/kg 2.3E-07 mg/kg-day NA NA 6.4E-07 mg/kg-day 4.0E-02 mg/kg-day 1.6E-05
Iron 3.4E+04 mg/kg 2.8E-05 mg/kg-day NA NA 7.8E-05 mg/kg-day 7.0E-01 mg/kg-day 1.1E-04
Lead 1.2E+03 mg/kg 1.0E-06 mg/kg-day NA NA 2.8E-06 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 2.5E-07 mg/kg-day NA NA 7.1E-07 mg/kg-day 7.0E-01 mg/kg-day 1.0E-06
Vanadium 4.6E+01 mg/kg 3.8E-08 mg/kg-day NA NA 1.1E-07 mg/kg-day 5.0E-03 mg/kg-day 2.1E-05
Exp. Route Total 9.8E-06 1.9E-02
Exposure Point Total 2.0E-05 4.3E-02
2.0E-05 4.3E-02
Overflow Surface Sediment Total 2.0E-05 4.3E-02
Exposure Medium Total
TABLE 7.4.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Industrial Worker
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
WaterCanal Overflow - Surface Water
Ingestion
1,4-dichlorobenzene 5.9E-01 ug/L 3.0E-08 mg/kg-day 5.4E-03 1/(mg/kg-day) 1.6E-10 8.3E-08 mg/kg-day 7.0E-02 mg/kg-day 1.2E-06
Benzene 8.4E-01 ug/L 9.2E-09 mg/kg-day 5.5E-02 1/(mg/kg-day) 5.1E-10 1.2E-07 mg/kg-day 4.0E-03 mg/kg-day 2.9E-05
Chloroform 5.6E-01 ug/L 6.2E-09 mg/kg-day 3.1E-02 1/(mg/kg-day) 1.9E-10 7.9E-08 mg/kg-day 1.0E-02 mg/kg-day 7.9E-06
Ethylbenzene 8.7E-01 ug/L 9.6E-09 mg/kg-day 1.1E-02 1/(mg/kg-day) 1.1E-10 1.2E-07 mg/kg-day 1.0E-01 mg/kg-day 1.2E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 2.7E-07 mg/kg-day 5.4E-01 1/(mg/kg-day) 1.5E-07 3.4E-06 mg/kg-day 1.0E-02 mg/kg-day 3.4E-04
Benzo(a)anthracene 1.0E-01 ug/L 1.2E-09 mg/kg-day 7.3E-01 1/(mg/kg-day) 8.4E-10 1.5E-08 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 2.3E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.7E-08 2.9E-08 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 2.1E-09 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.5E-09 2.7E-08 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 1.1E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 8.2E-09 1.4E-08 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 5.5E-09 mg/kg-day 7.3E-01 1/(mg/kg-day) 4.0E-09 7.0E-08 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L 4.0E-09 mg/kg-day NA NA 5.1E-08 mg/kg-day 2.0E-02 mg/kg-day 2.6E-06
Arsenic 1.7E+01 ug/L 1.8E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.8E-07 2.3E-06 mg/kg-day 3.0E-04 mg/kg-day 7.8E-03
Chromium 8.5E+00 ug/L 9.4E-08 mg/kg-day 5.0E-01 1/(mg/kg-day) 4.7E-08 1.2E-06 mg/kg-day 3.0E-03 mg/kg-day 4.0E-04
Cobalt 3.9E+00 ug/L 4.3E-08 mg/kg-day NA NA 5.5E-07 mg/kg-day 3.0E-04 mg/kg-day 1.8E-03
Lead 1.5E+01 ug/L 1.6E-07 mg/kg-day NA NA 2.1E-06 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 3.7E-07 mg/kg-day NA NA 4.7E-06 mg/kg-day 5.0E-03 mg/kg-day 9.5E-04
Exp. Route Total 5.0E-07 1.1E-02
TABLE 7.4.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Industrial Worker
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
WaterCanal Overflow - Surface Water
Dermal
1,4-dichlorobenzene 5.9E-01 ug/L 1.5E-07 mg/kg-day 5.4E-03 1/(mg/kg-day) 8.0E-10 4.2E-07 mg/kg-day 7.0E-02 mg/kg-day 6.0E-06
Benzene 8.4E-01 ug/L 7.4E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 4.1E-09 2.1E-07 mg/kg-day 4.0E-03 mg/kg-day 5.2E-05
Chloroform 5.6E-01 ug/L 2.4E-08 mg/kg-day 3.1E-02 1/(mg/kg-day) 7.4E-10 6.7E-08 mg/kg-day 1.0E-02 mg/kg-day 6.7E-06
Ethylbenzene 8.7E-01 ug/L 2.3E-07 mg/kg-day 1.1E-02 1/(mg/kg-day) 2.6E-09 6.6E-07 mg/kg-day 1.0E-01 mg/kg-day 6.6E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 5.2E-06 mg/kg-day 5.4E-01 1/(mg/kg-day) 2.8E-06 1.5E-05 mg/kg-day 1.0E-02 mg/kg-day 1.5E-03
Benzo(a)anthracene 1.0E-01 ug/L 3.9E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 2.9E-07 1.1E-06 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 1.3E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 9.6E-06 3.7E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 1.2E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 9.0E-07 3.5E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 1.0E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 7.3E-06 2.8E-06 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 3.3E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 2.4E-06 9.2E-06 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L 9.8E-08 mg/kg-day NA NA 2.7E-07 mg/kg-day 2.0E-02 mg/kg-day 1.4E-05
Arsenic 1.7E+01 ug/L 9.5E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.4E-07 2.7E-07 mg/kg-day 3.0E-04 mg/kg-day 8.9E-04
Chromium 8.5E+00 ug/L 9.8E-08 mg/kg-day 2.0E+01 1/(mg/kg-day) 2.0E-06 2.7E-07 mg/kg-day 7.5E-05 mg/kg-day 3.7E-03
Cobalt 3.9E+00 ug/L 8.9E-09 mg/kg-day NA NA 2.5E-08 mg/kg-day 3.0E-04 mg/kg-day 8.4E-05
Lead 1.5E+01 ug/L 8.5E-09 mg/kg-day NA NA 2.4E-08 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 1.9E-07 mg/kg-day NA NA 5.4E-07 mg/kg-day 5.0E-03 mg/kg-day 1.1E-04
Exp. Route Total 2.5E-05 6.3E-03
Exposure Point Total 2.6E-05 1.8E-02
2.6E-05 1.8E-02
Overflow Surface Water Total 2.6E-05 1.8E-02
Total Total of Receptor Risks Across All Media 7.6E-05 Total of Receptor Hazards Across All Media 7.8E-01
Notes-
NA = Not available / Not applicable.
DAevent for surface water calculated on Table 7.4.RME Supplement A.
Total includes maximum between air prior to and after aeration system operation, and surface water, and sediment.
Exposure Medium Total
TABLE 7.4.RME Supplement A
Calculation of DAevent
Industrial Worker Adult
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Water Permeability Lag Fraction Duration
of Potential Concentration Coefficient Time Absorbed Water of Event
Concern (CW) (Kp) B (τevent) t* (FA) (tevent) DAevent
(µg/L) (cm/hr) (dimensionless) (hr) (hr) (dimensionless) (hr) (mg/cm2-event) Eq
1,4-dichlorobenzene 5.9E-01 4.2E-02 2.0E-01 7.1E-01 1.7E+00 1.0E+00 8 2.1E-07 3
Benzene 8.4E-01 1.5E-02 5.1E-02 2.9E-01 7.0E-01 1.0E+00 8 1.0E-07 3
Chloroform 5.6E-01 6.8E-03 2.9E-02 5.0E-01 1.2E+00 1.0E+00 8 3.3E-08 3
Ethylbenzene 8.7E-01 4.9E-02 2.0E-01 4.2E-01 1.0E+00 1.0E+00 8 3.3E-07 3
Tetrachloroethylene(PCE) 2.4E+01 3.3E-02 1.7E-01 9.1E-01 2.2E+00 1.0E+00 8 7.2E-06 3
Benzo(a)anthracene 1.0E-01 4.7E-01 2.8E+00 2.0E+00 8.5E+00 1.0E+00 8 5.4E-07 2
Benzo(a)pyrene 2.1E-01 7.0E-01 4.3E+00 2.7E+00 1.2E+01 1.0E+00 8 1.8E-06 2
Benzo(b)fluoranthene 1.9E-01 7.0E-01 4.3E+00 2.8E+00 1.2E+01 1.0E+00 8 1.7E-06 2
Dibenz(a,h)anthracene 1.0E-01 1.5E+00 9.7E+00 3.9E+00 1.8E+01 6.0E-01 8 1.4E-06 2
Indeno(1,2,3-c,d)pyrene 5.0E-01 1.0E+00 6.7E+00 3.8E+00 1.7E+01 6.0E-01 8 4.6E-06 2
Naphthalene 3.6E-01 4.7E-02 2.0E-01 5.6E-01 1.3E+00 1.0E+00 8 1.4E-07 3
Arsenic 1.7E+01 1.0E-03 NA NA NA NA 8 1.3E-07 1
Chromium 8.5E+00 2.0E-03 NA NA NA NA 8 1.4E-07 1
Cobalt 3.9E+00 4.0E-04 NA NA NA NA 8 1.2E-08 1
Lead 1.5E+01 1.0E-04 NA NA NA NA 8 1.2E-08 1
Selenium 3.4E+01 1.0E-03 NA NA NA NA 8 2.7E-07 1
Inorganics: DAevent (mg/cm2-event) =
Kp x CW x tevent x 0.001 mg/µg x 0.001 l/cm3 (eq 1)
Organics: DAevent (mg/cm2-event) =
If tevent<t*, then DAevent =
2 x FA x Kp x CW x (sqrt((6 x τevent x tevent)/π)) x 0.001 mg/µg x 0.001 l/cm3 (eq 2)
If tevent>t*, then DAevent =
FA x Kp x CW x ( tevent/(1+B) + 2 x τevent x ((1 + 3xB + 3xB2)/(1+B)2) x 0.001 mg/µg x 0.001 l/cm3 (eq 3)
Notes:
NA - Not applicable
Permeability constants and other input parameter values from EPA 2004, Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual (Part E,
Supplemental Guidance for Dermal Risk Assessment - Final). EPA/540/R/99/005. The default value of 0.001 was assigned to inorganics not listed in this document.
B - Dimensionless ratio of the permeability coefficient of a compound through the stratum corneum relative to its permeability
coefficient across the viable epidermis (dimensionless).
t* - Time to reach steady-state
TABLE 7.5.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Air AirAmbient air at street
levelInhalation
(pre-aeration system Benzene 1.3E-03 mg/m3 7.8E-06 1/(ug/m3) 1.2E-03 mg/m3 3.0E-02 mg/m34.0E-02
operation) Chloroform 2.5E-04 mg/m3 2.3E-05 1/(ug/m3) 2.3E-04 mg/m3 9.8E-02 mg/m32.4E-03
Ethylbenzene 1.1E-03 mg/m3 2.5E-06 1/(ug/m3) 1.0E-03 mg/m3 1.0E+00 mg/m31.0E-03
Naphthalene 1.3E-03 mg/m3 3.4E-05 1/(ug/m3) 1.2E-03 mg/m3 3.0E-03 mg/m34.2E-01
Exp. Route Total 0.0E+00 4.6E-01
Exposure Point Total 0.0E+00 4.6E-01
0.0E+00 4.6E-01
Ambient air at street level Total - Pre-aeration system operation 0.0E+00 4.6E-01
Air AirAmbient air at street
levelInhalation
(after aeration system Benzene 1.1E-03 mg/m3 7.8E-06 1/(ug/m3) 1.1E-03 mg/m3 3.0E-02 mg/m33.5E-02
started) Chloroform 3.3E-04 mg/m3 2.3E-05 1/(ug/m3) 3.2E-04 mg/m3 9.8E-02 mg/m33.2E-03
Ethylbenzene 1.2E-03 mg/m3 2.5E-06 1/(ug/m3) 1.2E-03 mg/m3 1.0E+00 mg/m31.2E-03
Naphthalene 3.0E-03 mg/m3 3.4E-05 1/(ug/m3) 2.9E-03 mg/m3 3.0E-03 mg/m39.7E-01
Exp. Route Total 0.0E+00 1.0E+00
Exposure Point Total 0.0E+00 1.0E+00
0.0E+00 1.0E+00
Ambient air at street level Total - After aeration system turned on 0.0E+00 1.0E+00
Exposure Medium Total
Exposure Medium Total
TABLE 7.5.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in areas adjacent to Gowanus Canal
associated with canal overflow
Ingestion
2-methylnaphthalene 3.6E+02 mg/kg NA 1/(mg/kg-day) 1.3E-05 mg/kg-day 4.0E-03 mg/kg-day 3.2E-03
Acenaphthene 3.1E+02 mg/kg NA 1.1E-05 mg/kg-day 6.0E-02 mg/kg-day 1.8E-04
Benzo(a)anthracene 1.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 4.5E-06 mg/kg-day NA NA
Benzo(a)pyrene 7.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 2.6E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 7.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 2.8E-06 mg/kg-day NA NA
Benzo(k)fluoranthene 4.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 1.4E-06 mg/kg-day NA NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.4E-02 1/(mg/kg-day) 5.1E-07 mg/kg-day 2.0E-02 mg/kg-day 2.6E-05
Chrysene 1.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 4.5E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 5.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 1.9E-07 mg/kg-day NA NA
Fluoranthene 1.8E+02 mg/kg NA 6.3E-06 mg/kg-day 4.0E-02 mg/kg-day 1.6E-04
Fluorene 2.3E+02 mg/kg NA 8.1E-06 mg/kg-day 4.0E-02 mg/kg-day 2.0E-04
Indeno(1,2,3-c,d)pyrene 3.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 1.1E-06 mg/kg-day NA NA
Naphthalene 6.6E+02 mg/kg NA 2.3E-05 mg/kg-day 2.0E-02 mg/kg-day 1.2E-03
Pyrene 3.9E+02 mg/kg NA 1.4E-05 mg/kg-day 3.0E-02 mg/kg-day 4.5E-04
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 1.6E+05 1/(mg/kg-day) 1.6E-12 mg/kg-day NA NA
Nondioxin-Like PCB 6.4E+00 mg/kg 2.0E+00 1/(mg/kg-day) 2.3E-07 mg/kg-day NA NA
Total PCB 6.6E+00 mg/kg NA 2.3E-07 mg/kg-day 2.0E-05 mg/kg-day 1.2E-02
Aluminum 1.5E+04 mg/kg NA 5.1E-04 mg/kg-day 1.0E+00 mg/kg-day 5.1E-04
Arsenic 1.5E+01 mg/kg 1.5E+00 1/(mg/kg-day) 5.2E-07 mg/kg-day 3.0E-04 mg/kg-day 1.7E-03
Cadmium 1.0E+01 mg/kg NA 3.5E-07 mg/kg-day 1.0E-03 mg/kg-day 3.5E-04
Chromium 8.5E+01 mg/kg 5.0E-01 3.0E-06 mg/kg-day 3.0E-03 mg/kg-day 9.9E-04
Cobalt 1.1E+01 mg/kg NA 3.9E-07 mg/kg-day 3.0E-04 mg/kg-day 1.3E-03
Copper 2.7E+02 mg/kg NA 9.7E-06 mg/kg-day 4.0E-02 mg/kg-day 2.4E-04
Iron 3.4E+04 mg/kg NA 1.2E-03 mg/kg-day 7.0E-01 mg/kg-day 1.7E-03
Lead 1.2E+03 mg/kg NA 4.2E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg NA 1.1E-05 mg/kg-day 1.4E-01 mg/kg-day 7.7E-05
Vanadium 4.6E+01 mg/kg NA 1.6E-06 mg/kg-day 5.0E-03 mg/kg-day 3.2E-04
Exp. Route Total 0.0E+00 2.4E-02
TABLE 7.5.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in areas adjacent to Gowanus Canal
associated with canal overflow
Dermal
2-methylnaphthalene 3.6E+02 mg/kg NA 1.9E-05 mg/kg-day 4.0E-03 mg/kg-day 4.7E-03
Acenaphthene 3.1E+02 mg/kg NA 1.6E-05 mg/kg-day 6.0E-02 mg/kg-day 2.7E-04
Benzo(a)anthracene 1.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 6.7E-06 mg/kg-day NA NA
Benzo(a)pyrene 7.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 3.8E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 7.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 4.1E-06 mg/kg-day NA NA
Benzo(k)fluoranthene 4.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 2.1E-06 mg/kg-day NA NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.4E-02 1/(mg/kg-day) 5.8E-07 mg/kg-day 2.0E-02 mg/kg-day 2.9E-05
Chrysene 1.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 6.6E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 5.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 2.9E-07 mg/kg-day NA NA
Fluoranthene 1.8E+02 mg/kg NA 9.4E-06 mg/kg-day 4.0E-02 mg/kg-day 2.3E-04
Fluorene 2.3E+02 mg/kg NA 1.2E-05 mg/kg-day 4.0E-02 mg/kg-day 3.0E-04
Indeno(1,2,3-c,d)pyrene 3.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 1.6E-06 mg/kg-day NA NA
Naphthalene 6.6E+02 mg/kg NA 3.4E-05 mg/kg-day 2.0E-02 mg/kg-day 1.7E-03
Pyrene 3.9E+02 mg/kg NA 2.0E-05 mg/kg-day 3.0E-02 mg/kg-day 6.7E-04
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 1.6E+05 1/(mg/kg-day) 2.5E-12 mg/kg-day NA NA
Nondioxin-Like PCB 6.4E+00 mg/kg 2.0E+00 1/(mg/kg-day) 3.6E-07 mg/kg-day NA NA
Total PCB 6.6E+00 mg/kg NA 3.7E-07 mg/kg-day 2.0E-05 mg/kg-day 1.9E-02
Aluminum 1.5E+04 mg/kg NA 5.9E-05 mg/kg-day 1.0E+00 mg/kg-day 5.9E-05
Arsenic 1.5E+01 mg/kg 1.5E+00 1/(mg/kg-day) 1.8E-07 mg/kg-day 3.0E-04 mg/kg-day 5.9E-04
Cadmium 1.0E+01 mg/kg NA 4.0E-09 mg/kg-day 2.5E-05 mg/kg-day 1.6E-04
Chromium 8.5E+01 mg/kg 2.0E+01 1/(mg/kg-day) 3.4E-07 mg/kg-day 7.5E-05 mg/kg-day 4.5E-03
Cobalt 1.1E+01 mg/kg NA 4.4E-08 mg/kg-day 3.0E-04 mg/kg-day 1.5E-04
Copper 2.7E+02 mg/kg NA 1.1E-06 mg/kg-day 4.0E-02 mg/kg-day 2.8E-05
Iron 3.4E+04 mg/kg NA 1.3E-04 mg/kg-day 7.0E-01 mg/kg-day 1.9E-04
Lead 1.2E+03 mg/kg NA 4.8E-06 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg NA 1.2E-06 mg/kg-day 7.0E-01 mg/kg-day 1.8E-06
Vanadium 4.6E+01 mg/kg NA 1.8E-07 mg/kg-day 5.0E-03 mg/kg-day 3.7E-05
Exp. Route Total 0.0E+00 3.2E-02
Exposure Point Total 0.0E+00 5.6E-02
0.0E+00 5.6E-02
Overflow Surface Sediment Total 0.0E+00 5.6E-02
Exposure Medium Total
TABLE 7.5.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
WaterCanal Overflow - Surface Water
Ingestion
1,4-dichlorobenzene 5.9E-01 ug/L 5.4E-03 1/(mg/kg-day) 2.7E-08 mg/kg-day 7.0E-02 mg/kg-day 3.9E-07
Benzene 8.4E-01 ug/L 5.5E-02 1/(mg/kg-day) 3.8E-08 mg/kg-day 4.0E-03 mg/kg-day 9.6E-06
Chloroform 5.6E-01 ug/L 3.1E-02 1/(mg/kg-day) 2.6E-08 mg/kg-day 1.0E-02 mg/kg-day 2.6E-06
Ethylbenzene 8.7E-01 ug/L 1.1E-02 1/(mg/kg-day) 4.0E-08 mg/kg-day 1.0E-01 mg/kg-day 4.0E-07
Tetrachloroethylene(PCE) 2.4E+01 ug/L 5.4E-01 1/(mg/kg-day) 1.1E-06 mg/kg-day 1.0E-02 mg/kg-day 1.1E-04
Benzo(a)anthracene 1.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 4.8E-09 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 9.4E-09 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 8.7E-09 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 4.6E-09 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 2.3E-08 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L NA 1.7E-08 mg/kg-day 2.0E-02 mg/kg-day 8.3E-07
Arsenic 1.7E+01 ug/L 1.5E+00 1/(mg/kg-day) 7.6E-07 mg/kg-day 3.0E-04 mg/kg-day 2.5E-03
Chromium 8.5E+00 ug/L 5.0E-01 1/(mg/kg-day) 3.9E-07 mg/kg-day 3.0E-03 mg/kg-day 1.3E-04
Cobalt 3.9E+00 ug/L NA 1.8E-07 mg/kg-day 3.0E-04 mg/kg-day 6.0E-04
Lead 1.5E+01 ug/L NA 6.8E-07 mg/kg-day NA NA
Selenium 3.4E+01 ug/L NA 1.5E-06 mg/kg-day 5.0E-03 mg/kg-day 3.1E-04
Exp. Route Total 0.0E+00 3.7E-03
TABLE 7.5.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
WaterCanal Overflow - Surface Water
Dermal
1,4-dichlorobenzene 5.9E-01 ug/L 5.4E-03 1/(mg/kg-day) 1.9E-07 mg/kg-day 7.0E-02 mg/kg-day 2.7E-06
Benzene 8.4E-01 ug/L 5.5E-02 1/(mg/kg-day) 7.8E-08 mg/kg-day 4.0E-03 mg/kg-day 1.9E-05
Chloroform 5.6E-01 ug/L 3.1E-02 1/(mg/kg-day) 2.7E-08 mg/kg-day 1.0E-02 mg/kg-day 2.7E-06
Ethylbenzene 8.7E-01 ug/L 1.1E-02 1/(mg/kg-day) 2.7E-07 mg/kg-day 1.0E-01 mg/kg-day 2.7E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 5.4E-01 1/(mg/kg-day) 7.0E-06 mg/kg-day 1.0E-02 mg/kg-day 7.0E-04
Benzo(a)anthracene 1.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 6.2E-07 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 2.1E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 2.0E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 1.6E-06 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 5.2E-06 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L NA 1.2E-07 mg/kg-day 2.0E-02 mg/kg-day 6.0E-06
Arsenic 1.7E+01 ug/L 1.5E+00 1/(mg/kg-day) 8.7E-08 mg/kg-day 3.0E-04 mg/kg-day 2.9E-04
Chromium 8.5E+00 ug/L 2.0E+01 1/(mg/kg-day) 8.9E-08 mg/kg-day 7.5E-05 mg/kg-day 1.2E-03
Cobalt 3.9E+00 ug/L NA 8.1E-09 mg/kg-day 3.0E-04 mg/kg-day 2.7E-05
Lead 1.5E+01 ug/L NA 7.8E-09 mg/kg-day NA NA
Selenium 3.4E+01 ug/L NA 1.8E-07 mg/kg-day 5.0E-03 mg/kg-day 3.5E-05
Exp. Route Total 0.0E+00 2.3E-03
Exposure Point Total 0.0E+00 6.0E-03
0.0E+00 6.0E-03
Overflow Surface Water Total 0.0E+00 6.0E-03
Total Total of Receptor Risks Across All Media 0.0E+00 Total of Receptor Hazards Across All Media 1.1E+00
Notes-
NA = Not available / Not applicable.
DAevent for surface water calculated on Table 7.5.RME Supplement A.
Total includes maximum between air prior to and after aeration system operations, and surface water, and sediment.
Exposure Medium Total
TABLE 7.5.RME Supplement A
Calculation of Daevent Wet Event
Residential Scenario
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Water Permeability Lag Fraction Duration
of Potential Concentration Coefficient Time Absorbed Water of Event
Concern (CW) (Kp) B (τevent) t* (FA) (tevent) DAevent
(µg/L) (cm/hr) (dimensionless) (hr) (hr) (dimensionless) (hr) (mg/cm2-event) Eq
1,4-dichlorobenzene 5.9E-01 4.2E-02 2.0E-01 7.1E-01 1.7E+00 1.0E+00 2.6 9.6E-08 3
Benzene 8.4E-01 1.5E-02 5.1E-02 2.9E-01 7.0E-01 1.0E+00 2.6 3.9E-08 3
Chloroform 5.6E-01 6.8E-03 2.9E-02 5.0E-01 1.2E+00 1.0E+00 2.6 1.4E-08 3
Ethylbenzene 8.7E-01 4.9E-02 2.0E-01 4.2E-01 1.0E+00 1.0E+00 2.6 1.4E-07 3
Tetrachloroethylene(PCE) 2.4E+01 3.3E-02 1.7E-01 9.1E-01 2.2E+00 1.0E+00 2.6 3.5E-06 3
Benzo(a)anthracene 1.0E-01 4.7E-01 2.8E+00 2.0E+00 8.5E+00 1.0E+00 2.6 3.1E-07 2
Benzo(a)pyrene 2.1E-01 7.0E-01 4.3E+00 2.7E+00 1.2E+01 1.0E+00 2.6 1.0E-06 2
Benzo(b)fluoranthene 1.9E-01 7.0E-01 4.3E+00 2.8E+00 1.2E+01 1.0E+00 2.6 9.8E-07 2
Dibenz(a,h)anthracene 1.0E-01 1.5E+00 9.7E+00 3.9E+00 1.8E+01 6.0E-01 2.6 8.0E-07 2
Indeno(1,2,3-c,d)pyrene 5.0E-01 1.0E+00 6.7E+00 3.8E+00 1.7E+01 6.0E-01 2.6 2.6E-06 2
Naphthalene 3.6E-01 4.7E-02 2.0E-01 5.6E-01 1.3E+00 1.0E+00 2.6 6.0E-08 3
Arsenic 1.7E+01 1.0E-03 NA NA NA NA 2.6 4.3E-08 1
Chromium 8.5E+00 2.0E-03 NA NA NA NA 2.6 4.4E-08 1
Cobalt 3.9E+00 4.0E-04 NA NA NA NA 2.6 4.1E-09 1
Lead 1.5E+01 1.0E-04 NA NA NA NA 2.6 3.9E-09 1
Selenium 3.4E+01 1.0E-03 NA NA NA NA 2.6 8.7E-08 1
Inorganics: DAevent (mg/cm2-event) =
Kp x CW x tevent x 0.001 mg/µg x 0.001 l/cm3 (eq 1)
Organics: DAevent (mg/cm2-event) =
If tevent<t*, then DAevent =
2 x FA x Kp x CW x (sqrt((6 x τevent x tevent)/π)) x 0.001 mg/µg x 0.001 l/cm3 (eq 2)
If tevent>t*, then DAevent =
FA x Kp x CW x ( tevent/(1+B) + 2 x τevent x ((1 + 3xB + 3xB2)/(1+B)2) x 0.001 mg/µg x 0.001 l/cm3 (eq 3)
Notes:
NA - Not applicable
Permeability constants and other input parameter values from EPA 2004, Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual (Part E,
Supplemental Guidance for Dermal Risk Assessment - Final). EPA/540/R/99/005. The default value of 0.001 was assigned to inorganics not listed in this document.
B - Dimensionless ratio of the permeability coefficient of a compound through the stratum corneum relative to its permeability
coefficient across the viable epidermis (dimensionless).
t* - Time to reach steady-state
TABLE 7.6.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Intake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Air AirAmbient air at street
levelInhalation
(pre-aeration system Benzene 1.3E-03 mg/m3 7.8E-06 1/(ug/m3) 1.2E-03 mg/m3 3.0E-02 mg/m34.0E-02
operation) Chloroform 2.5E-04 mg/m3 2.3E-05 1/(ug/m3) 2.3E-04 mg/m3 9.8E-02 mg/m32.4E-03
Ethylbenzene 1.1E-03 mg/m3 2.5E-06 1/(ug/m3) 1.0E-03 mg/m3 1.0E+00 mg/m31.0E-03
Naphthalene 1.3E-03 mg/m3 3.4E-05 1/(ug/m3) 1.2E-03 mg/m3 3.0E-03 mg/m34.2E-01
Exp. Route Total 4.6E-01
Exposure Point Total 4.6E-01
4.6E-01
Ambient air at street level Total - Pre-aeration system operation 4.6E-01
Air AirAmbient air at street
levelInhalation
(after aeration system Benzene 1.1E-03 mg/m3 7.8E-06 1/(ug/m3) 1.1E-03 mg/m3 3.0E-02 mg/m33.5E-02
started) Chloroform 3.3E-04 mg/m3 2.3E-05 1/(ug/m3) 3.2E-04 mg/m3 9.8E-02 mg/m33.2E-03
Ethylbenzene 1.2E-03 mg/m3 2.5E-06 1/(ug/m3) 1.2E-03 mg/m3 1.0E+00 mg/m31.2E-03
Naphthalene 3.0E-03 mg/m3 3.4E-05 1/(ug/m3) 2.9E-03 mg/m3 3.0E-03 mg/m39.7E-01
Exp. Route Total 1.0E+00
Exposure Point Total 1.0E+00
1.0E+00
Ambient air at street level Total - After aeration system turned on 1.0E+00
Exposure Medium Total
Exposure Medium Total
TABLE 7.6.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Intake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in areas adjacent to Gowanus Canal
associated with canal overflow
Ingestion
2-methylnaphthalene 3.6E+02 mg/kg NA 1/(mg/kg-day) 1.2E-04 mg/kg-day 4.0E-03 mg/kg-day 2.9E-02
Acenaphthene 3.1E+02 mg/kg NA 1.0E-04 mg/kg-day 6.0E-02 mg/kg-day 1.7E-03
Benzo(a)anthracene 1.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 4.2E-05 mg/kg-day NA NA
Benzo(a)pyrene 7.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 2.4E-05 mg/kg-day NA NA
Benzo(b)fluoranthene 7.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 2.6E-05 mg/kg-day NA NA
Benzo(k)fluoranthene 4.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 1.3E-05 mg/kg-day NA NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.4E-02 1/(mg/kg-day) 4.8E-06 mg/kg-day 2.0E-02 mg/kg-day 2.4E-04
Chrysene 1.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 4.2E-05 mg/kg-day NA NA
Dibenz(a,h)anthracene 5.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 1.8E-06 mg/kg-day NA NA
Fluoranthene 1.8E+02 mg/kg NA 5.9E-05 mg/kg-day 4.0E-02 mg/kg-day 1.5E-03
Fluorene 2.3E+02 mg/kg NA 7.6E-05 mg/kg-day 4.0E-02 mg/kg-day 1.9E-03
Indeno(1,2,3-c,d)pyrene 3.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 1.0E-05 mg/kg-day NA NA
Naphthalene 6.6E+02 mg/kg NA 2.2E-04 mg/kg-day 2.0E-02 mg/kg-day 1.1E-02
Pyrene 3.9E+02 mg/kg NA 1.3E-04 mg/kg-day 3.0E-02 mg/kg-day 4.2E-03
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 1.6E+05 1/(mg/kg-day) 1.5E-11 mg/kg-day NA NA
Nondioxin-Like PCB 6.4E+00 mg/kg 2.0E+00 1/(mg/kg-day) 2.1E-06 mg/kg-day NA NA
Total PCB 6.6E+00 mg/kg NA 2.2E-06 mg/kg-day 2.0E-05 mg/kg-day 1.1E-01
Aluminum 1.5E+04 mg/kg NA 4.8E-03 mg/kg-day 1.0E+00 mg/kg-day 4.8E-03
Arsenic 1.5E+01 mg/kg 1.5E+00 1/(mg/kg-day) 4.8E-06 mg/kg-day 3.0E-04 mg/kg-day 1.6E-02
Cadmium 1.0E+01 mg/kg NA 3.3E-06 mg/kg-day 1.0E-03 mg/kg-day 3.3E-03
Chromium 8.5E+01 mg/kg 5.0E-01 2.8E-05 mg/kg-day 3.0E-03 mg/kg-day 9.3E-03
Cobalt 1.1E+01 mg/kg NA 3.6E-06 mg/kg-day 3.0E-04 mg/kg-day 1.2E-02
Copper 2.7E+02 mg/kg NA 9.0E-05 mg/kg-day 4.0E-02 mg/kg-day 2.3E-03
Iron 3.4E+04 mg/kg NA 1.1E-02 mg/kg-day 7.0E-01 mg/kg-day 1.6E-02
Lead 1.2E+03 mg/kg NA 3.9E-04 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg NA 1.0E-04 mg/kg-day 1.4E-01 mg/kg-day 7.2E-04
Vanadium 4.6E+01 mg/kg NA 1.5E-05 mg/kg-day 5.0E-03 mg/kg-day 3.0E-03
Exp. Route Total 2.3E-01
TABLE 7.6.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Intake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in areas adjacent to Gowanus Canal
associated with canal overflow
Dermal
2-methylnaphthalene 3.6E+02 mg/kg NA 4.3E-05 mg/kg-day 4.0E-03 mg/kg-day 1.1E-02
Acenaphthene 3.1E+02 mg/kg NA 3.7E-05 mg/kg-day 6.0E-02 mg/kg-day 6.2E-04
Benzo(a)anthracene 1.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 1.5E-05 mg/kg-day NA NA
Benzo(a)pyrene 7.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 8.8E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 7.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 9.5E-06 mg/kg-day NA NA
Benzo(k)fluoranthene 4.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 4.9E-06 mg/kg-day NA NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.4E-02 1/(mg/kg-day) 1.3E-06 mg/kg-day 2.0E-02 mg/kg-day 6.7E-05
Chrysene 1.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 1.5E-05 mg/kg-day NA NA
Dibenz(a,h)anthracene 5.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 6.5E-07 mg/kg-day NA NA
Fluoranthene 1.8E+02 mg/kg NA 2.2E-05 mg/kg-day 4.0E-02 mg/kg-day 5.4E-04
Fluorene 2.3E+02 mg/kg NA 2.8E-05 mg/kg-day 4.0E-02 mg/kg-day 6.9E-04
Indeno(1,2,3-c,d)pyrene 3.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 3.8E-06 mg/kg-day NA NA
Naphthalene 6.6E+02 mg/kg NA 7.8E-05 mg/kg-day 2.0E-02 mg/kg-day 3.9E-03
Pyrene 3.9E+02 mg/kg NA 4.6E-05 mg/kg-day 3.0E-02 mg/kg-day 1.5E-03
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 1.6E+05 1/(mg/kg-day) 5.8E-12 mg/kg-day NA NA
Nondioxin-Like PCB 6.4E+00 mg/kg 2.0E+00 1/(mg/kg-day) 8.3E-07 mg/kg-day NA NA
Total PCB 6.6E+00 mg/kg NA 8.5E-07 mg/kg-day 2.0E-05 mg/kg-day 4.3E-02
Aluminum 1.5E+04 mg/kg NA 1.3E-04 mg/kg-day 1.0E+00 mg/kg-day 1.3E-04
Arsenic 1.5E+01 mg/kg 1.5E+00 1/(mg/kg-day) 4.1E-07 mg/kg-day 3.0E-04 mg/kg-day 1.4E-03
Cadmium 1.0E+01 mg/kg NA 9.2E-09 mg/kg-day 2.5E-05 mg/kg-day 3.7E-04
Chromium 8.5E+01 mg/kg 2.0E+01 1/(mg/kg-day) 7.8E-07 mg/kg-day 7.5E-05 mg/kg-day 1.0E-02
Cobalt 1.1E+01 mg/kg NA 1.0E-07 mg/kg-day 3.0E-04 mg/kg-day 3.4E-04
Copper 2.7E+02 mg/kg NA 2.5E-06 mg/kg-day 4.0E-02 mg/kg-day 6.3E-05
Iron 3.4E+04 mg/kg NA 3.1E-04 mg/kg-day 7.0E-01 mg/kg-day 4.4E-04
Lead 1.2E+03 mg/kg NA 1.1E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg NA 2.8E-06 mg/kg-day 7.0E-01 mg/kg-day 4.0E-06
Vanadium 4.6E+01 mg/kg NA 4.2E-07 mg/kg-day 5.0E-03 mg/kg-day 8.5E-05
Exp. Route Total 7.4E-02
Exposure Point Total 3.0E-01
3.0E-01
Overflow Surface Sediment Total 3.0E-01
Exposure Medium Total
TABLE 7.6.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Intake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
WaterCanal Overflow - Surface Water
Ingestion
1,4-dichlorobenzene 5.9E-01 ug/L 5.4E-03 1/(mg/kg-day) 1.3E-07 mg/kg-day 7.0E-02 mg/kg-day 1.8E-06
Benzene 8.4E-01 ug/L 5.5E-02 1/(mg/kg-day) 1.8E-07 mg/kg-day 4.0E-03 mg/kg-day 4.5E-05
Chloroform 5.6E-01 ug/L 3.1E-02 1/(mg/kg-day) 1.2E-07 mg/kg-day 1.0E-02 mg/kg-day 1.2E-05
Ethylbenzene 8.7E-01 ug/L 1.1E-02 1/(mg/kg-day) 1.9E-07 mg/kg-day 1.0E-01 mg/kg-day 1.9E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 5.4E-01 1/(mg/kg-day) 5.2E-06 mg/kg-day 1.0E-02 mg/kg-day 5.2E-04
Benzo(a)anthracene 1.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 2.2E-08 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 4.4E-08 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 4.0E-08 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 2.2E-08 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 1.1E-07 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L NA 7.8E-08 mg/kg-day 2.0E-02 mg/kg-day 3.9E-06
Arsenic 1.7E+01 ug/L 1.5E+00 1/(mg/kg-day) 3.5E-06 mg/kg-day 3.0E-04 mg/kg-day 1.2E-02
Chromium 8.5E+00 ug/L 5.0E-01 1/(mg/kg-day) 1.8E-06 mg/kg-day 3.0E-03 mg/kg-day 6.1E-04
Cobalt 3.9E+00 ug/L NA 8.3E-07 mg/kg-day 3.0E-04 mg/kg-day 2.8E-03
Lead 1.5E+01 ug/L NA 3.2E-06 mg/kg-day NA NA
Selenium 3.4E+01 ug/L NA 7.2E-06 mg/kg-day 5.0E-03 mg/kg-day 1.4E-03
Exp. Route Total 1.7E-02
TABLE 7.6.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Intake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
WaterCanal Overflow - Surface Water
Dermal
1,4-dichlorobenzene 5.9E-01 ug/L 5.4E-03 1/(mg/kg-day) 4.4E-07 mg/kg-day 7.0E-02 mg/kg-day 6.3E-06
Benzene 8.4E-01 ug/L 5.5E-02 1/(mg/kg-day) 1.8E-07 mg/kg-day 4.0E-03 mg/kg-day 4.4E-05
Chloroform 5.6E-01 ug/L 3.1E-02 1/(mg/kg-day) 6.2E-08 mg/kg-day 1.0E-02 mg/kg-day 6.2E-06
Ethylbenzene 8.7E-01 ug/L 1.1E-02 1/(mg/kg-day) 6.2E-07 mg/kg-day 1.0E-01 mg/kg-day 6.2E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 5.4E-01 1/(mg/kg-day) 1.6E-05 mg/kg-day 1.0E-02 mg/kg-day 1.6E-03
Benzo(a)anthracene 1.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 1.4E-06 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 4.8E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 4.5E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 3.7E-06 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 1.2E-05 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L NA 2.8E-07 mg/kg-day 2.0E-02 mg/kg-day 1.4E-05
Arsenic 1.7E+01 ug/L 1.5E+00 1/(mg/kg-day) 2.0E-07 mg/kg-day 3.0E-04 mg/kg-day 6.6E-04
Chromium 8.5E+00 ug/L 2.0E+01 1/(mg/kg-day) 2.0E-07 mg/kg-day 7.5E-05 mg/kg-day 2.7E-03
Cobalt 3.9E+00 ug/L NA 1.9E-08 mg/kg-day 3.0E-04 mg/kg-day 6.2E-05
Lead 1.5E+01 ug/L NA 1.8E-08 mg/kg-day NA NA
Selenium 3.4E+01 ug/L NA 4.0E-07 mg/kg-day 5.0E-03 mg/kg-day 8.0E-05
Exp. Route Total 5.2E-03
Exposure Point Total 2.2E-02
2.2E-02
Overflow Surface Water Total 2.2E-02
Total Total of Receptor Risks Across All Media Total of Receptor Hazards Across All Media 1.3E+00
Notes-
NA = Not available / Not applicable.
DAevent for surface water calculated on Table 7.5.RME Supplement A.
Total includes maximum between air prior to and after aeration system operations, and surface water, and sediment.
Exposure Medium Total
TABLE 7.7.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Air AirAmbient air at street
levelInhalation
(pre-aeration system Benzene 1.3E-03 mg/m3 3.7E-01 ug/m3 7.8E-06 1/(ug/m3) 2.9E-06 3.0E-02 mg/m3
operation) Chloroform 2.5E-04 mg/m3 7.2E-02 ug/m3 2.3E-05 1/(ug/m3) 1.7E-06 9.8E-02 mg/m3
Ethylbenzene 1.1E-03 mg/m3 3.2E-01 ug/m3 2.5E-06 1/(ug/m3) 8.0E-07 1.0E+00 mg/m3
Naphthalene 1.3E-03 mg/m3 3.8E-01 ug/m3 3.4E-05 1/(ug/m3) 1.3E-05 3.0E-03 mg/m3
Exp. Route Total 1.8E-05
Exposure Point Total 1.8E-05
1.8E-05
Ambient air at street level Total - Pre-aeration system operation 1.8E-05
Air AirAmbient air at street
levelInhalation
(after aeration system Benzene 1.1E-03 mg/m3 3.3E-01 ug/m3 7.8E-06 1/(ug/m3) 2.5E-06 3.0E-02 mg/m3
started) Chloroform 3.3E-04 mg/m3 9.7E-02 ug/m3 2.3E-05 1/(ug/m3) 2.2E-06 9.8E-02 mg/m3
Ethylbenzene 1.2E-03 mg/m3 3.6E-01 ug/m3 2.5E-06 1/(ug/m3) 9.1E-07 1.0E+00 mg/m3
Naphthalene 3.0E-03 mg/m3 8.9E-01 ug/m3 3.4E-05 1/(ug/m3) 3.0E-05 3.0E-03 mg/m3
Exp. Route Total 3.6E-05
Exposure Point Total 3.6E-05
3.6E-05
Ambient air at street level Total - After aeration system turned on 3.6E-05
Exposure Medium Total
Exposure Medium Total
TABLE 7.7.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in areas adjacent to Gowanus Canal
associated with canal overflow
Ingestion
2-methylnaphthalene 3.6E+02 mg/kg 1.4E-05 mg/kg-day NA 1/(mg/kg-day) NA 4.0E-03 mg/kg-day
Acenaphthene 3.1E+02 mg/kg 1.2E-05 mg/kg-day NA NA 6.0E-02 mg/kg-day
Benzo(a)anthracene11.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 1.6E-05 NA
Benzo(a)pyrene17.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 9.2E-05 NA
Benzo(b)fluoranthene17.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 1.0E-05 NA
Benzo(k)fluoranthene14.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 5.2E-07 NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 5.8E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 8.2E-09 2.0E-02 mg/kg-day
Chrysene11.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 1.6E-07 NA
Dibenz(a,h)anthracene15.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 6.9E-06 NA
Fluoranthene 1.8E+02 mg/kg 7.2E-06 mg/kg-day NA NA 4.0E-02 mg/kg-day
Fluorene 2.3E+02 mg/kg 9.3E-06 mg/kg-day NA NA 4.0E-02 mg/kg-day
Indeno(1,2,3-c,d)pyrene13.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 4.0E-06 NA
Naphthalene 6.6E+02 mg/kg 2.6E-05 mg/kg-day NA NA 2.0E-02 mg/kg-day
Pyrene 3.9E+02 mg/kg 1.6E-05 mg/kg-day NA NA 3.0E-02 mg/kg-day
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 1.8E-12 mg/kg-day 1.6E+05 1/(mg/kg-day) 2.8E-07 NA
Nondioxin-Like PCB 6.4E+00 mg/kg 2.6E-07 mg/kg-day 2.0E+00 1/(mg/kg-day) 5.2E-07 NA
Total PCB 6.6E+00 mg/kg 2.7E-07 mg/kg-day NA NA 2.0E-05 mg/kg-day
Aluminum 1.5E+04 mg/kg 5.9E-04 mg/kg-day NA NA 1.0E+00 mg/kg-day
Arsenic 1.5E+01 mg/kg 5.9E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 8.9E-07 3.0E-04 mg/kg-day
Cadmium 1.0E+01 mg/kg 4.0E-07 mg/kg-day NA NA 1.0E-03 mg/kg-day
Chromium18.5E+01 mg/kg 5.0E-01 1/(mg/kg-day) 7.3E-08 3.0E-03 mg/kg-day
Cobalt 1.1E+01 mg/kg 4.4E-07 mg/kg-day NA NA 3.0E-04 mg/kg-day
Copper 2.7E+02 mg/kg 1.1E-05 mg/kg-day NA NA 4.0E-02 mg/kg-day
Iron 3.4E+04 mg/kg 1.4E-03 mg/kg-day NA NA 7.0E-01 mg/kg-day
Lead 1.2E+03 mg/kg 4.8E-05 mg/kg-day NA NA NA
Manganese 3.1E+02 mg/kg 1.2E-05 mg/kg-day NA NA 1.4E-01 mg/kg-day
Vanadium 4.6E+01 mg/kg 1.8E-06 mg/kg-day NA NA 5.0E-03 mg/kg-day
Exp. Route Total 1.3E-04
TABLE 7.7.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in areas adjacent to Gowanus Canal
associated with canal overflow
Dermal
2-methylnaphthalene 3.6E+02 mg/kg 1.0E-05 mg/kg-day NA NA 4.0E-03 mg/kg-day
Acenaphthene 3.1E+02 mg/kg 8.7E-06 mg/kg-day NA NA 6.0E-02 mg/kg-day
Benzo(a)anthracene11.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 8.2E-06 NA
Benzo(a)pyrene17.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 4.7E-05 NA
Benzo(b)fluoranthene17.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 5.1E-06 NA
Benzo(k)fluoranthene14.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 2.6E-07 NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 3.1E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 4.4E-09 2.0E-02 mg/kg-day
Chrysene11.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 8.1E-08 NA
Dibenz(a,h)anthracene15.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 3.5E-06 NA
Fluoranthene 1.8E+02 mg/kg 5.1E-06 mg/kg-day NA NA 4.0E-02 mg/kg-day
Fluorene 2.3E+02 mg/kg 6.5E-06 mg/kg-day NA NA 4.0E-02 mg/kg-day
Indeno(1,2,3-c,d)pyrene13.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 2.0E-06 NA
Naphthalene 6.6E+02 mg/kg 1.8E-05 mg/kg-day NA NA 2.0E-02 mg/kg-day
Pyrene 3.9E+02 mg/kg 1.1E-05 mg/kg-day NA NA 3.0E-02 mg/kg-day
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 1.4E-12 mg/kg-day 1.6E+05 1/(mg/kg-day) 2.1E-07 NA
Nondioxin-Like PCB 6.4E+00 mg/kg 2.0E-07 mg/kg-day 2.0E+00 1/(mg/kg-day) 3.9E-07 NA
Total PCB 6.6E+00 mg/kg 2.0E-07 mg/kg-day NA NA 2.0E-05 mg/kg-day
Aluminum 1.5E+04 mg/kg 3.2E-05 mg/kg-day NA NA 1.0E+00 mg/kg-day
Arsenic 1.5E+01 mg/kg 9.6E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.4E-07 3.0E-04 mg/kg-day
Cadmium 1.0E+01 mg/kg 2.2E-09 mg/kg-day NA NA 2.5E-05 mg/kg-day
Chromium18.5E+01 mg/kg 2.0E+01 1/(mg/kg-day) 1.1E-06 7.5E-05 mg/kg-day
Cobalt 1.1E+01 mg/kg 2.4E-08 mg/kg-day NA NA 3.0E-04 mg/kg-day
Copper 2.7E+02 mg/kg 5.9E-07 mg/kg-day NA NA 4.0E-02 mg/kg-day
Iron 3.4E+04 mg/kg 7.3E-05 mg/kg-day NA NA 7.0E-01 mg/kg-day
Lead 1.2E+03 mg/kg 2.6E-06 mg/kg-day NA NA NA
Manganese 3.1E+02 mg/kg 6.6E-07 mg/kg-day NA NA 7.0E-01 mg/kg-day
Vanadium 4.6E+01 mg/kg 9.9E-08 mg/kg-day NA NA 5.0E-03 mg/kg-day
Exp. Route Total 6.8E-05
Exposure Point Total 2.0E-04
2.0E-04
Overflow Surface Sediment Total 2.0E-04
Exposure Medium Total
TABLE 7.7.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow
Surface WaterCanal Overflow - Surface Water
Ingestion
1,4-dichlorobenzene 5.9E-01 ug/L 2.0E-08 mg/kg-day 5.4E-03 1/(mg/kg-day) 1.1E-10 7.0E-02 mg/kg-day
Benzene 8.4E-01 ug/L 2.8E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 1.6E-09 4.0E-03 mg/kg-day
Chloroform 5.6E-01 ug/L 1.9E-08 mg/kg-day 3.1E-02 1/(mg/kg-day) 5.9E-10 1.0E-02 mg/kg-day
Ethylbenzene 8.7E-01 ug/L 2.9E-08 mg/kg-day 1.1E-02 1/(mg/kg-day) 3.2E-10 1.0E-01 mg/kg-day
Tetrachloroethylene(PCE) 2.4E+01 ug/L 8.3E-07 mg/kg-day 5.4E-01 1/(mg/kg-day) 4.5E-07 1.0E-02 mg/kg-day
Benzo(a)anthracene11.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 9.6E-09 NA
Benzo(a)pyrene12.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 1.9E-07 NA
Benzo(b)fluoranthene11.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 1.7E-08 NA
Dibenz(a,h)anthracene11.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 9.3E-08 NA
Indeno(1,2,3-c,d)pyrene15.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 4.6E-08 NA
Naphthalene 3.6E-01 ug/L 1.2E-08 mg/kg-day NA NA 2.0E-02 mg/kg-day
Arsenic 1.7E+01 ug/L 5.6E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 8.4E-07 3.0E-04 mg/kg-day
Chromium18.5E+00 ug/L 5.0E-01 1/(mg/kg-day) 5.4E-07 3.0E-03 mg/kg-day
Cobalt 3.9E+00 ug/L 1.3E-07 mg/kg-day NA NA 3.0E-04 mg/kg-day
Lead 1.5E+01 ug/L 5.0E-07 mg/kg-day NA NA NA
Selenium 3.4E+01 ug/L 1.1E-06 mg/kg-day NA NA 5.0E-03 mg/kg-day
Exp. Route Total 2.2E-06
TABLE 7.7.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow
Surface WaterCanal Overflow - Surface Water
Dermal
1,4-dichlorobenzene 5.9E-01 ug/L 1.0E-07 mg/kg-day 5.4E-03 1/(mg/kg-day) 5.6E-10 7.0E-02 mg/kg-day
Benzene 8.4E-01 ug/L 4.2E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 2.3E-09 4.0E-03 mg/kg-day
Chloroform 5.6E-01 ug/L 1.5E-08 mg/kg-day 3.1E-02 1/(mg/kg-day) 4.5E-10 1.0E-02 mg/kg-day
Ethylbenzene 8.7E-01 ug/L 1.5E-07 mg/kg-day 1.1E-02 1/(mg/kg-day) 1.6E-09 1.0E-01 mg/kg-day
Tetrachloroethylene(PCE) 2.4E+01 ug/L 3.8E-06 mg/kg-day 5.4E-01 1/(mg/kg-day) 2.0E-06 1.0E-02 mg/kg-day
Benzo(a)anthracene11.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 7.6E-07 NA
Benzo(a)pyrene12.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 2.6E-05 NA
Benzo(b)fluoranthene11.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 2.4E-06 NA
Dibenz(a,h)anthracene11.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 2.0E-05 NA
Indeno(1,2,3-c,d)pyrene15.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 6.4E-06 NA
Naphthalene 3.6E-01 ug/L 6.5E-08 mg/kg-day NA NA 2.0E-02 mg/kg-day
Arsenic 1.7E+01 ug/L 4.7E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 7.0E-08 3.0E-04 mg/kg-day
Chromium18.5E+00 ug/L 2.0E+01 1/(mg/kg-day) 3.6E-06 7.5E-05 mg/kg-day
Cobalt 3.9E+00 ug/L 4.4E-09 mg/kg-day NA NA 3.0E-04 mg/kg-day
Lead 1.5E+01 ug/L 4.2E-09 mg/kg-day NA NA NA
Selenium 3.4E+01 ug/L 9.5E-08 mg/kg-day NA NA 5.0E-03 mg/kg-day
Exp. Route Total 6.1E-05
Exposure Point Total 6.3E-05
6.3E-05
Overflow Surface Water Total 6.3E-05
Total Total of Receptor Risks Across All Media 3.0E-04 Total of Receptor Hazards Across All Media
Notes-
NA = Not available / Not applicable.
DAevent for surface water calculated on Table 7.5.RME Supplement A.
Total includes maximum between air prior to and after aeration system operations, and surface water, and sediment.
1. See Table 7.7.RME Supplement A for calculation of intake and cancer risk following MMOA method.
Exposure Medium Total
TABLE 7.7.RME Supplement A
CALCULATION OF CHEMICAL CANCER RISKS FOR COPC WITH MUTAGENIC MODE OF ACTION
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Future
Receptor Population: Resident
Receptor Age: Adult/Child
Chemical of EPC Cancer Risk Calculations
Medium Exposure Medium Exposure Point Exposure Route Potential Concern Intake CSF/Unit Risk
Value Units Value Value Cancer Risk
0-2 yrs 2-6 yrs 6-16 years 16-30 yrs0-2 yrs
(ADAF=10)
2-6 yrs
(ADAF=3)
6-16 yrs
(ADAF=3)
16-30 yrs
(ADAF=1)
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow Ingestion Benzo(a)anthracene 1.3E+02 mg/kg 1.2E-06 2.4E-06 6.4E-07 9.0E-07 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 mg/kg/day 1.6E-05
Benzo(a)pyrene 7.3E+01 mg/kg 6.9E-07 1.4E-06 3.7E-07 5.2E-07 mg/kg/day 7.3E+01 2.2E+01 2.2E+01 7.3E+00 mg/kg/day 9.2E-05
Benzo(b)fluoranthene 7.9E+01 mg/kg 7.4E-07 1.5E-06 4.0E-07 5.6E-07 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 mg/kg/day 1.0E-05
Benzo(k)fluoranthene 4.1E+01 mg/kg 3.9E-07 7.7E-07 2.1E-07 2.9E-07 mg/kg/day 7.3E-01 2.2E-01 2.2E-01 7.3E-02 mg/kg/day 5.2E-07
Chrysene 1.3E+02 mg/kg 1.2E-06 2.4E-06 6.4E-07 8.9E-07 mg/kg/day 7.3E-02 2.2E-02 2.2E-02 7.3E-03 mg/kg/day 1.6E-07
Dibenz(a,h)anthracene 5.5E+00 mg/kg 5.1E-08 1.0E-07 2.7E-08 3.8E-08 mg/kg/day 7.3E+01 2.2E+01 2.2E+01 7.3E+00 mg/kg/day 6.9E-06
Indeno(1,2,3-cd)pyrene 3.1E+01 mg/kg 2.9E-07 5.9E-07 1.6E-07 2.2E-07 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 mg/kg/day 4.0E-06
Chromium 8.5E-01 mg/kg 8.0E-09 1.6E-08 4.3E-09 6.0E-09 mg/kg/day 5.0E+00 1.5E+00 1.5E+00 5.0E-01 mg/kg/day 7.3E-08
Dermal Benzo(a)anthracene 1.3E+02 mg/kg 4.4E-07 8.8E-07 9.5E-07 1.3E-06 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 mg/kg/day 8.2E-06
Benzo(a)pyrene 7.3E+01 mg/kg 2.5E-07 5.0E-07 5.5E-07 7.6E-07 mg/kg/day 7.3E+01 2.2E+01 2.2E+01 7.3E+00 mg/kg/day 4.7E-05
Benzo(b)fluoranthene 7.9E+01 mg/kg 2.7E-07 5.4E-07 5.9E-07 8.3E-07 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 mg/kg/day 5.1E-06
Benzo(k)fluoranthene 4.1E+01 mg/kg 1.4E-07 2.8E-07 3.1E-07 4.3E-07 mg/kg/day 7.3E-01 2.2E-01 2.2E-01 7.3E-02 mg/kg/day 2.6E-07
Chrysene 1.3E+02 mg/kg 4.3E-07 8.7E-07 9.5E-07 1.3E-06 mg/kg/day 7.3E-02 2.2E-02 2.2E-02 7.3E-03 mg/kg/day 8.1E-08
Dibenz(a,h)anthracene 5.5E+00 mg/kg 1.9E-08 3.7E-08 4.1E-08 5.7E-08 mg/kg/day 7.3E+01 2.2E+01 2.2E+01 7.3E+00 mg/kg/day 3.5E-06
Indeno(1,2,3-cd)pyrene 3.1E+01 mg/kg 1.1E-07 2.1E-07 2.3E-07 3.3E-07 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 mg/kg/day 2.0E-06
Chromium 8.5E+01 mg/kg 2.2E-09 4.4E-09 4.8E-09 6.8E-09 mg/kg/day 2.0E+02 6.0E+01 6.0E+01 2.0E+01 mg/kg/day 1.1E-06
Surface WaterOverflow Surface
Water
Canal Overflow -
Surface Water Ingestion Benzo(a)anthracene 1.0E-01 ug/L 6.3E-10 1.3E-09 6.8E-10 9.5E-10 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 9.6E-09
Benzo(a)pyrene 2.1E-01 ug/L 1.3E-09 2.5E-09 1.3E-09 1.9E-09 mg/kg/day 7.3E+01 2.2E+01 2.2E+01 7.3E+00 1/(mg/kg-day) 1.9E-07
Benzo(b)fluoranthene 1.9E-01 ug/L 1.2E-09 2.3E-09 1.2E-09 1.7E-09 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 1.7E-08
Dibenz(a,h)anthracene 1.0E-01 ug/L 6.2E-10 1.2E-09 6.6E-10 9.3E-10 mg/kg/day 7.3E+01 2.2E+01 2.2E+01 7.3E+00 1/(mg/kg-day) 9.3E-08
Indeno(1,2,3-cd)pyrene 5.0E-01 ug/L 3.1E-09 6.1E-09 3.3E-09 4.6E-09 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 4.6E-08
Chromium 8.5E+00 ug/L 5.2E-08 1.0E-07 5.6E-08 7.8E-08 mg/kg/day 5.0E+00 1.5E+00 1.5E+00 5.0E-01 1/(mg/kg-day) 5.4E-07
Dermal Benzo(a)anthracene 1.0E-01 ug/L 4.1E-08 8.2E-08 8.9E-08 1.2E-07 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 7.6E-07
Benzo(a)pyrene 2.1E-01 ug/L 1.4E-07 2.8E-07 3.0E-07 4.2E-07 mg/kg/day 7.3E+01 2.2E+01 2.2E+01 7.3E+00 1/(mg/kg-day) 2.6E-05
Benzo(b)fluoranthene 1.9E-01 ug/L 1.3E-07 2.6E-07 2.8E-07 3.9E-07 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 2.4E-06
Dibenz(a,h)anthracene 1.0E-01 ug/L 1.0E-07 2.1E-07 2.3E-07 3.2E-07 mg/kg/day 7.3E+01 2.2E+01 2.2E+01 7.3E+00 1/(mg/kg-day) 2.0E-05
Indeno(1,2,3-cd)pyrene 5.0E-01 ug/L 3.4E-07 6.8E-07 7.5E-07 1.0E-06 mg/kg/day 7.3E+00 2.2E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 6.4E-06
Chromium 8.5E+00 ug/L 7.9E-09 1.6E-08 1.3E-08 1.8E-08 mg/kg/day 2.0E+02 6.0E+01 6.0E+01 2.0E+01 1/(mg/kg-day) 3.6E-06
Cancer risk = (Intake0-2 x CSF0-2) + (Intake2-6 x CSF2-6) + (Intake6-16 x CSF6-16) + (Intake16-30 x CSF16-30)
Units Units
Page 43 of 96
TABLE 7.8.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Striped Bass in Gowanus Canal
Ingestion
p,p'-DDE 1.2E-02 mg/kg 7.2E-07 mg/kg-day 3.4E-01 1/(mg/kg-day) 2.4E-07 2.1E-06 mg/kg-day NA NA
p,p'-DDT 9.6E-03 mg/kg 5.7E-07 mg/kg-day 3.4E-01 1/(mg/kg-day) 2.0E-07 1.7E-06 mg/kg-day 5.0E-04 mg/kg-day 3.4E-03
Dioxin-Like PCB TEQ 4.3E-06 mg/kg 2.6E-10 mg/kg-day 1.6E+05 1/(mg/kg-day) 4.0E-05 7.5E-10 mg/kg-day NA NA
Nondioxin-Like 4.1E-01 mg/kg 2.4E-05 mg/kg-day 2.0E+00 1/(mg/kg-day) 4.9E-05 7.1E-05 mg/kg-day NA NA
Total PCB 4.4E-01 mg/kg 2.6E-05 mg/kg-day NA NA 7.6E-05 mg/kg-day 2.0E-05 mg/kg-day 3.8E+00
Arsenic 6.8E-02 mg/kg 4.1E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 6.1E-06 1.2E-05 mg/kg-day 3.0E-04 mg/kg-day 4.0E-02
Mercury 2.0E-01 mg/kg 1.2E-05 mg/kg-day NA NA 3.5E-05 mg/kg-day 1.0E-04 mg/kg-day 3.5E-01
Selenium 1.2E+00 mg/kg 7.2E-05 mg/kg-day NA NA 2.1E-04 mg/kg-day 5.0E-03 mg/kg-day 4.2E-02
Exp. Route Total 9.6E-05 4.2E+00
Exposure Point Total 9.6E-05 4.2E+00
Exposure Medium Total - Striped Bass in Gowanus Canal 9.6E-05 4.2E+00
Fish and Crab Tissue
White Perch in Gowanus Canal
Ingestion
Dioxin-Like PCB TEQ 5.8E-06 mg/kg 6.4E-11 mg/kg-day 1.6E+05 1/(mg/kg-day) 9.9E-06 1.9E-10 mg/kg-day NA NA
Nondioxin-Like 4.4E-01 mg/kg 4.8E-06 mg/kg-day 2.0E+00 1/(mg/kg-day) 9.6E-06 1.5E-05 mg/kg-day NA NA
Total PCB 4.6E-01 mg/kg 5.1E-06 mg/kg-day NA NA 1.5E-05 mg/kg-day 2.0E-05 mg/kg-day 7.7E-01
Mercury 1.9E-01 mg/kg 1.1E-05 mg/kg-day NA NA 6.4E-06 mg/kg-day 1.0E-04 mg/kg-day 6.4E-02
Selenium 1.4E+00 mg/kg 8.0E-05 mg/kg-day NA NA 4.7E-05 mg/kg-day 5.0E-03 mg/kg-day 9.4E-03
Exp. Route Total 2.0E-05 8.5E-01
Exposure Point Total 2.0E-05 8.5E-01
Exposure Medium Total - White Perch in Gowanus Canal 2.0E-05 8.5E-01
TABLE 7.8.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Eel in Gowanus Canal Ingestion
alpha-Chlordane 2.2E-02 mg/kg 1.2E-06 mg/kg-day 3.5E-01 1/(mg/kg-day) 4.3E-07 3.6E-06 mg/kg-day 5.0E-04 mg/kg-day 7.2E-03
Dieldrin 1.7E-02 mg/kg 9.5E-07 mg/kg-day 1.6E+01 1/(mg/kg-day) 1.5E-05 2.8E-06 mg/kg-day 5.0E-05 mg/kg-day 5.6E-02
gamma-Chlordane 1.3E-02 mg/kg 7.3E-07 mg/kg-day 3.5E-01 1/(mg/kg-day) 2.5E-07 2.1E-06 mg/kg-day 5.0E-04 mg/kg-day 4.2E-03
p,p'-DDD 3.8E-02 mg/kg 2.1E-06 mg/kg-day 2.4E-01 1/(mg/kg-day) 5.1E-07 6.2E-06 mg/kg-day NA NA
p,p'-DDE 2.5E-02 mg/kg 1.4E-06 mg/kg-day 3.4E-01 1/(mg/kg-day) 4.8E-07 4.1E-06 mg/kg-day NA NA
p,p'-DDT 4.7E-02 mg/kg 2.6E-06 mg/kg-day 3.4E-01 1/(mg/kg-day) 9.0E-07 7.7E-06 mg/kg-day 5.0E-04 mg/kg-day 1.5E-02
Dioxin-Like PCB TEQ 1.4E-05 mg/kg 7.9E-10 mg/kg-day 1.6E+05 1/(mg/kg-day) 1.2E-04 2.3E-09 mg/kg-day NA NA
Nondioxin-Like 1.2E+00 mg/kg 6.8E-05 mg/kg-day 2.0E+00 1/(mg/kg-day) 1.4E-04 2.0E-04 mg/kg-day NA NA
Total PCB 1.4E+00 mg/kg 7.6E-05 mg/kg-day NA NA 2.2E-04 mg/kg-day 2.0E-05 mg/kg-day 1.1E+01
Arsenic 5.0E-02 mg/kg 2.8E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.2E-06 8.2E-06 mg/kg-day 3.0E-04 mg/kg-day 2.7E-02
Chromium 6.7E-01 mg/kg 3.8E-05 mg/kg-day 5.0E-01 1/(mg/kg-day) 1.9E-05 1.1E-04 mg/kg-day 3.0E-03 mg/kg-day 3.6E-02
Copper 7.4E+00 mg/kg 4.1E-04 mg/kg-day NA NA 1.2E-03 mg/kg-day 4.0E-02 mg/kg-day 3.0E-02
Cyanide, total 3.1E+00 mg/kg 1.7E-04 mg/kg-day NA NA 5.1E-04 mg/kg-day 2.0E-02 2.5E-02
Mercury 2.6E-01 mg/kg 1.5E-05 mg/kg-day NA NA 4.2E-05 mg/kg-day 1.0E-04 4.2E-01
Selenium 1.4E+00 mg/kg 7.8E-05 mg/kg-day NA NA 2.3E-04 mg/kg-day 5.0E-03 mg/kg-day 4.6E-02
Exp. Route Total 3.0E-04 1.2E+01
Exposure Point Total 3.0E-04 1.2E+01
Exposure Medium Total - Eel in Gowanus Canal 3.0E-04 1.2E+01
TABLE 7.8.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Blue Crab in Gowanus Canal
Ingestion
Benzo(a)anthracene 7.7E-03 mg/kg 8.7E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 6.3E-07 2.5E-06 mg/kg-day NA NA
Benzo(a)pyrene 1.2E-02 mg/kg 1.3E-06 mg/kg-day 7.3E+00 1/(mg/kg-day) 9.7E-06 3.9E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 6.4E-03 mg/kg 7.2E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 5.3E-07 2.1E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 3.9E-03 mg/kg 4.4E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.2E-06 1.3E-06 mg/kg-day NA NA
Indeno(1,2,3-cd)pyrene 9.9E-03 mg/kg 1.1E-06 mg/kg-day 7.3E-01 1/(mg/kg-day) 8.1E-07 3.3E-06 mg/kg-day NA NA
Dioxin-Like PCB TEQ 5.0E-06 mg/kg 5.7E-10 mg/kg-day 1.6E+05 1/(mg/kg-day) 8.9E-05 1.7E-09 mg/kg-day NA NA
Nondioxin-Like 1.4E-01 mg/kg 1.6E-05 mg/kg-day 2.0E+00 1/(mg/kg-day) 3.2E-05 4.7E-05 mg/kg-day NA NA
Total PCB 1.7E-01 mg/kg 1.9E-05 mg/kg-day NA NA 5.5E-05 mg/kg-day 2.0E-05 mg/kg-day 2.7E+00
Arsenic 1.3E-01 mg/kg 1.5E-05 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.2E-05 4.3E-05 mg/kg-day 3.0E-04 mg/kg-day 1.4E-01
Copper 1.0E+01 mg/kg 1.1E-03 mg/kg-day NA NA 3.4E-03 mg/kg-day 4.0E-02 mg/kg-day 8.4E-02
Mercury 1.2E-01 mg/kg 1.4E-05 mg/kg-day NA NA 4.1E-05 mg/kg-day 1.0E-04 mg/kg-day 4.1E-01
Exp. Route Total 1.6E-04 3.4E+00
Exposure Point Total 1.6E-04 3.4E+00
Exposure Medium Total - Crab in Gowanus Canal 1.6E-04 3.4E+00
Total Fish Total of Receptor Risks - Fish 4.2E-04 Total of Receptor Hazards - Fish 1.7E+01
Total Blue Crab Total of Receptor Risks - Blur Crab 1.6E-04 Total of Receptor Hazards - Blue Crab 3.4E+00
Notes-
NA = Not available / Not applicable.
TABLE 7.9.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Striped Bass in Gowanus Canal
Ingestion
p,p'-DDE 1.2E-02 mg/kg 1.4E-07 mg/kg-day 3.4E-01 1/(mg/kg-day) 4.9E-08 1.7E-06 mg/kg-day NA NA
p,p'-DDT 9.6E-03 mg/kg 1.2E-07 mg/kg-day 3.4E-01 1/(mg/kg-day) 3.9E-08 1.3E-06 mg/kg-day 5.0E-04 mg/kg-day 2.7E-03
Dioxin-Like PCB TEQ 4.3E-06 mg/kg 5.2E-11 mg/kg-day 1.6E+05 1/(mg/kg-day) 8.1E-06 6.0E-10 mg/kg-day NA NA
Nondioxin-Like 4.1E-01 mg/kg 4.9E-06 mg/kg-day 2.0E+00 1/(mg/kg-day) 9.8E-06 5.7E-05 mg/kg-day NA NA
Total PCB 4.4E-01 mg/kg 5.2E-06 mg/kg-day NA NA 6.1E-05 mg/kg-day 2.0E-05 mg/kg-day 3.0E+00
Arsenic 6.8E-02 mg/kg 8.2E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.2E-06 9.5E-06 mg/kg-day 3.0E-04 mg/kg-day 3.2E-02
Mercury 2.0E-01 mg/kg 2.4E-06 mg/kg-day NA NA 2.8E-05 mg/kg-day 1.0E-04 mg/kg-day 2.8E-01
Selenium 1.2E+00 mg/kg 1.4E-05 mg/kg-day NA NA 1.7E-04 mg/kg-day 5.0E-03 mg/kg-day 3.4E-02
Exp. Route Total 1.9E-05 3.4E+00
Exposure Point Total 1.9E-05 3.4E+00
Exposure Medium Total - Striped Bass in Gowanus Canal 1.9E-05 3.4E+00
Fish and Crab Tissue
White Perch in Gowanus Canal
Ingestion
Dioxin-Like PCB TEQ 5.8E-06 mg/kg 1.3E-11 mg/kg-day 1.6E+05 1/(mg/kg-day) 2.1E-06 1.6E-10 mg/kg-day NA NA
Nondioxin-Like 4.4E-01 mg/kg 1.0E-06 mg/kg-day 2.0E+00 1/(mg/kg-day) 2.0E-06 1.2E-05 mg/kg-day NA NA
Total PCB 4.6E-01 mg/kg 1.1E-06 mg/kg-day NA NA 1.2E-05 mg/kg-day 2.0E-05 mg/kg-day 6.2E-01
Mercury 1.9E-01 mg/kg 4.4E-07 mg/kg-day NA NA 5.1E-06 mg/kg-day 1.0E-04 mg/kg-day 5.1E-02
Selenium 1.4E+00 mg/kg 3.2E-06 mg/kg-day NA NA 3.8E-05 mg/kg-day 5.0E-03 mg/kg-day 7.5E-03
Exp. Route Total 4.1E-06 6.8E-01
Exposure Point Total 4.1E-06 6.8E-01
Exposure Medium Total - White Perch in Gowanus Canal 4.1E-06 6.8E-01
TABLE 7.9.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Eel in Gowanus Canal Ingestion
alpha-Chlordane 2.2E-02 mg/kg 2.5E-07 mg/kg-day 3.5E-01 1/(mg/kg-day) 8.7E-08 2.9E-06 mg/kg-day 5.0E-04 mg/kg-day 5.8E-03
Dieldrin 1.7E-02 mg/kg 1.9E-07 mg/kg-day 1.6E+01 1/(mg/kg-day) 3.1E-06 2.2E-06 mg/kg-day 5.0E-05 mg/kg-day 4.5E-02
gamma-Chlordane 1.3E-02 mg/kg 1.5E-07 mg/kg-day 3.5E-01 1/(mg/kg-day) 5.1E-08 1.7E-06 mg/kg-day 5.0E-04 mg/kg-day 3.4E-03
p,p'-DDD 3.8E-02 mg/kg 4.3E-07 mg/kg-day 2.4E-01 1/(mg/kg-day) 1.0E-07 5.0E-06 mg/kg-day NA NA
p,p'-DDE 2.5E-02 mg/kg 2.8E-07 mg/kg-day 3.4E-01 1/(mg/kg-day) 9.6E-08 3.3E-06 mg/kg-day NA NA
p,p'-DDT 4.7E-02 mg/kg 5.3E-07 mg/kg-day 3.4E-01 1/(mg/kg-day) 1.8E-07 6.2E-06 mg/kg-day 5.0E-04 mg/kg-day 1.2E-02
Dioxin-Like PCB TEQ 1.4E-05 mg/kg 1.6E-10 mg/kg-day 1.6E+05 1/(mg/kg-day) 2.5E-05 1.9E-09 mg/kg-day NA NA
Nondioxin-Like 1.2E+00 mg/kg 1.4E-05 mg/kg-day 2.0E+00 1/(mg/kg-day) 2.7E-05 1.6E-04 mg/kg-day NA NA
Total PCB 1.4E+00 mg/kg 1.5E-05 mg/kg-day NA NA 1.8E-04 mg/kg-day 2.0E-05 mg/kg-day 8.9E+00
Arsenic 5.0E-02 mg/kg 5.6E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 8.4E-07 6.6E-06 mg/kg-day 3.0E-04 mg/kg-day 2.2E-02
Chromium (12-16)* 6.7E-01 mg/kg 5.0E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 7.5E-06 8.8E-05 mg/kg-day 3.0E-03 mg/kg-day 2.9E-02
Chromium (16-18)* 6.7E-01 mg/kg 2.5E-06 mg/kg-day 5.0E-01 1/(mg/kg-day) 1.3E-06
Copper 7.4E+00 mg/kg 8.3E-05 mg/kg-day NA NA 9.7E-04 mg/kg-day 4.0E-02 mg/kg-day 2.4E-02
Cyanide, total 3.1E+00 mg/kg 3.5E-05 mg/kg-day NA NA 4.1E-04 mg/kg-day 2.0E-02 mg/kg-day 2.0E-02
Mercury 2.6E-01 mg/kg 2.9E-06 mg/kg-day NA NA 3.4E-05 mg/kg-day 1.0E-04 mg/kg-day 3.4E-01
Selenium 1.4E+00 mg/kg 1.6E-05 mg/kg-day NA NA 1.8E-04 mg/kg-day 5.0E-03 mg/kg-day 3.7E-02
Exp. Route Total 6.5E-05 9.4E+00
Exposure Point Total 6.5E-05 9.4E+00
Exposure Medium Total - Eel in Gowanus Canal 6.5E-05 9.4E+00
TABLE 7.9.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Blue Crab in Gowanus Canal
Ingestion
Benzo(a)anthracene (12-16)* 7.7E-03 mg/kg 1.2E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.5E-07 2.0E-06 mg/kg-day NA NA
Benzo(a)anthracene (16-18)* 7.7E-03 mg/kg 5.8E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 4.2E-08
Benzo(a)pyrene (12-16)* 1.2E-02 mg/kg 1.8E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 3.9E-06 3.1E-06 mg/kg-day NA NA
Benzo(a)pyrene (16-18)* 1.2E-02 mg/kg 8.9E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 6.5E-07
Benzo(b)fluoranthene (12-16)* 6.4E-03 mg/kg 9.6E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.1E-07 1.7E-06 mg/kg-day NA NA
Benzo(b)fluoranthene (16-18)* 6.4E-03 mg/kg 4.8E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 3.5E-08
Dibenz(a,h)anthracene (12-16)* 3.9E-03 mg/kg 5.9E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.3E-06 1.0E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (16-18)* 3.9E-03 mg/kg 3.0E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.2E-07
Indeno(1,2,3-cd)pyrene (12-16)* 9.9E-03 mg/kg 1.5E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 3.3E-07 2.6E-06 mg/kg-day NA NA
Indeno(1,2,3-cd)pyrene (16-18)* 9.9E-03 mg/kg 7.5E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 5.4E-08
Dioxin-Like PCB TEQ 5.0E-06 mg/kg 1.1E-10 mg/kg-day 1.6E+05 1/(mg/kg-day) 1.8E-05 1.3E-09 mg/kg-day NA NA
Nondioxin-Like 1.4E-01 mg/kg 3.2E-06 mg/kg-day 2.0E+00 1/(mg/kg-day) 6.5E-06 3.8E-05 mg/kg-day NA NA
Total PCB 1.7E-01 mg/kg 3.7E-06 mg/kg-day NA NA 4.4E-05 mg/kg-day 2.0E-05 mg/kg-day 2.2E+00
Arsenic 1.3E-01 mg/kg 3.0E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.4E-06 3.4E-05 mg/kg-day 3.0E-04 mg/kg-day 1.1E-01
Copper 1.0E+01 mg/kg 2.3E-04 mg/kg-day NA NA 2.7E-03 mg/kg-day 4.0E-02 mg/kg-day 6.7E-02
Mercury 1.2E-01 mg/kg 2.8E-06 mg/kg-day NA NA 3.3E-05 mg/kg-day 1.0E-04 mg/kg-day 3.3E-01
Exp. Route Total 3.6E-05 2.7E+00
Exposure Point Total 3.6E-05 2.7E+00
Exposure Medium Total - Crab in Gowanus Canal 3.6E-05 2.7E+00
Total Fish Total of Receptor Risks - Fish 8.9E-05 Total of Receptor Hazards - Fish 1.3E+01
Total Blue Crab Total of Receptor Risks - Blur Crab 3.6E-05 Total of Receptor Hazards - Blue Crab 2.7E+00
Notes-
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 3 used to adjust CSF for 12-16 year old for exposure duration of 4 years, ADAF of 1 used to adjust CSF for 16-18 year old for exposure duration of 2 years.
Non-cancer calculations shown under 12-16 year old only, as non-cancer calculations are not adjusted for MMOA.
NA = Not available / Not applicable.
TABLE 7.10.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Striped Bass in Gowanus Canal
Ingestion
p,p'-DDE 1.2E-02 mg/kg 2.9E-07 mg/kg-day 3.4E-01 1/(mg/kg-day) 9.9E-08 3.4E-06 mg/kg-day NA NA
p,p'-DDT 9.6E-03 mg/kg 2.3E-07 mg/kg-day 3.4E-01 1/(mg/kg-day) 7.9E-08 2.7E-06 mg/kg-day 5.0E-04 mg/kg-day 5.4E-03
Dioxin-Like PCB TEQ 4.3E-06 mg/kg 1.0E-10 mg/kg-day 1.6E+05 1/(mg/kg-day) 1.6E-05 1.2E-09 mg/kg-day NA NA
Nondioxin-Like 4.1E-01 mg/kg 9.9E-06 mg/kg-day 2.0E+00 1/(mg/kg-day) 2.0E-05 1.2E-04 mg/kg-day NA NA
Total PCB 4.4E-01 mg/kg 1.1E-05 mg/kg-day NA NA 1.2E-04 mg/kg-day 2.0E-05 mg/kg-day 6.1E+00
Arsenic 6.8E-02 mg/kg 1.6E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.5E-06 1.9E-05 mg/kg-day 3.0E-04 mg/kg-day 6.4E-02
Mercury 2.0E-01 mg/kg 4.8E-06 mg/kg-day NA 1/(mg/kg-day) NA 5.6E-05 mg/kg-day 1.0E-04 mg/kg-day 5.6E-01
Selenium 1.2E+00 mg/kg 2.9E-05 mg/kg-day NA NA 3.4E-04 mg/kg-day 5.0E-03 mg/kg-day 6.8E-02
Exp. Route Total 3.9E-05 6.8E+00
Exposure Point Total 3.9E-05 6.8E+00
Exposure Medium Total - Striped Bass in Gowanus Canal 3.9E-05 6.8E+00
Fish and Crab Tissue
White Perch in Gowanus Canal
Ingestion
Dioxin-Like PCB TEQ 5.8E-06 mg/kg 2.7E-11 mg/kg-day 1.6E+05 1/(mg/kg-day) 4.2E-06 3.1E-10 mg/kg-day NA NA
Nondioxin-Like 4.4E-01 mg/kg 2.0E-06 mg/kg-day 2.0E+00 1/(mg/kg-day) 4.0E-06 2.4E-05 mg/kg-day NA NA
Total PCB 4.6E-01 mg/kg 2.1E-06 mg/kg-day NA NA 2.5E-05 mg/kg-day 2.0E-05 mg/kg-day 1.2E+00
Mercury 1.9E-01 mg/kg 8.8E-07 mg/kg-day NA NA 1.0E-05 mg/kg-day 1.0E-04 mg/kg-day 1.0E-01
Selenium 1.4E+00 mg/kg 6.5E-06 mg/kg-day NA NA 7.6E-05 mg/kg-day 5.0E-03 mg/kg-day 1.5E-02
Exp. Route Total 8.2E-06 1.4E+00
Exposure Point Total 8.2E-06 1.4E+00
Exposure Medium Total - White Perch in Gowanus Canal 8.2E-06 1.4E+00
TABLE 7.10.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Eel in Gowanus Canal Ingestion
alpha-Chlordane 2.2E-02 mg/kg 5.0E-07 mg/kg-day 3.5E-01 1/(mg/kg-day) 1.7E-07 5.8E-06 mg/kg-day 5.0E-04 mg/kg-day 1.2E-02
Dieldrin 1.7E-02 mg/kg 3.8E-07 mg/kg-day 1.6E+01 1/(mg/kg-day) 6.2E-06 4.5E-06 mg/kg-day 5.0E-05 mg/kg-day 9.0E-02
gamma-Chlordane 1.3E-02 mg/kg 2.9E-07 mg/kg-day 3.5E-01 1/(mg/kg-day) 1.0E-07 3.4E-06 mg/kg-day 5.0E-04 mg/kg-day 6.9E-03
p,p'-DDD 3.8E-02 mg/kg 8.6E-07 mg/kg-day 2.4E-01 1/(mg/kg-day) 2.1E-07 1.0E-05 mg/kg-day NA NA
p,p'-DDE 2.5E-02 mg/kg 5.7E-07 mg/kg-day 3.4E-01 1/(mg/kg-day) 1.9E-07 6.6E-06 mg/kg-day NA NA
p,p'-DDT 4.7E-02 mg/kg 1.1E-06 mg/kg-day 3.4E-01 1/(mg/kg-day) 3.6E-07 1.2E-05 mg/kg-day 5.0E-04 mg/kg-day 2.5E-02
Dioxin-Like PCB TEQ 1.4E-05 mg/kg 3.2E-10 mg/kg-day 1.6E+05 1/(mg/kg-day) 5.0E-05 3.7E-09 mg/kg-day NA NA
Nondioxin-Like 1.2E+00 mg/kg 2.8E-05 mg/kg-day 2.0E+00 1/(mg/kg-day) 5.5E-05 3.2E-04 mg/kg-day NA NA
Total PCB 1.4E+00 mg/kg 3.1E-05 mg/kg-day NA NA 3.6E-04 mg/kg-day 2.0E-05 mg/kg-day 1.8E+01
Arsenic 5.0E-02 mg/kg 1.1E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.7E-06 1.3E-05 mg/kg-day 3.0E-04 mg/kg-day 4.4E-02
Chromium (0-2)* 6.7E-01 mg/kg 5.1E-06 mg/kg-day 5.0E+00 1/(mg/kg-day) 2.5E-05 1.8E-04 mg/kg-day 3.0E-03 mg/kg-day 5.9E-02
Chromium (2-6)* 6.7E-01 mg/kg 1.0E-05 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.5E-05
Copper 7.4E+00 mg/kg 1.7E-04 mg/kg-day NA NA 2.0E-03 mg/kg-day 4.0E-02 mg/kg-day 4.9E-02
Cyanide, total 3.1E+00 mg/kg 7.0E-05 mg/kg-day NA NA 8.2E-04 mg/kg-day 2.0E-02 mg/kg-day 4.1E-02
Mercury 2.6E-01 mg/kg 5.9E-06 mg/kg-day NA NA 6.9E-05 mg/kg-day 1.0E-04 mg/kg-day 6.9E-01
Selenium 1.4E+00 mg/kg 3.2E-05 mg/kg-day NA NA 3.7E-04 mg/kg-day 5.0E-03 mg/kg-day 7.4E-02
Exp. Route Total 1.5E-04 1.9E+01
Exposure Point Total 1.5E-04 1.9E+01
Exposure Medium Total - Eel in Gowanus Canal 1.5E-04 1.9E+01
TABLE 7.10.RME
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Fish and Crab Tissue
Blue Crab in Gowanus Canal
Ingestion
Benzo(a)anthracene (0-2)* 7.7E-03 mg/kg 1.2E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 8.6E-07 4.1E-06 mg/kg-day NA NA
Benzo(a)anthracene (2-6)* 7.7E-03 mg/kg 2.3E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 5.1E-07
Benzo(a)pyrene (0-2)* 1.2E-02 mg/kg 1.8E-07 mg/kg-day 7.3E+01 1/(mg/kg-day) 1.3E-05 6.3E-06 mg/kg-day NA NA
Benzo(a)pyrene (2-6)* 1.2E-02 mg/kg 3.6E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 7.9E-06
Benzo(b)fluoranthene (0-2)* 6.4E-03 mg/kg 9.7E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 7.1E-07 3.4E-06 mg/kg-day NA NA
Benzo(b)fluoranthene (2-6)* 6.4E-03 mg/kg 1.9E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 4.3E-07
Dibenz(a,h)anthracene (0-2)* 3.9E-03 mg/kg 6.0E-08 mg/kg-day 7.3E+01 1/(mg/kg-day) 4.4E-06 2.1E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (2-6)* 3.9E-03 mg/kg 1.2E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 2.6E-06
Indeno(1,2,3-cd)pyrene (0-2)* 9.9E-03 mg/kg 1.5E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.1E-06 5.3E-06 mg/kg-day NA NA
Indeno(1,2,3-cd)pyrene (2-6)* 9.9E-03 mg/kg 3.0E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 6.6E-07
Dioxin-Like PCB TEQ 5.0E-06 mg/kg 2.3E-10 mg/kg-day 1.6E+05 1/(mg/kg-day) 3.6E-05 2.7E-09 mg/kg-day NA NA
Nondioxin-Like 1.4E-01 mg/kg 6.5E-06 mg/kg-day 2.0E+00 1/(mg/kg-day) 1.3E-05 7.6E-05 mg/kg-day NA NA
Total PCB 1.7E-01 mg/kg 7.6E-06 mg/kg-day NA NA 8.9E-05 mg/kg-day 2.0E-05 mg/kg-day 4.4E+00
Arsenic 1.3E-01 mg/kg 6.0E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 9.0E-06 7.0E-05 mg/kg-day 3.0E-04 mg/kg-day 2.3E-01
Copper 1.0E+01 mg/kg 4.7E-04 mg/kg-day NA NA 5.4E-03 mg/kg-day 4.0E-02 mg/kg-day 1.4E-01
Mercury 1.2E-01 mg/kg 5.7E-06 mg/kg-day NA NA 6.6E-05 mg/kg-day 1.0E-04 mg/kg-day 6.6E-01
Exp. Route Total 9.0E-05 5.5E+00
Exposure Point Total 9.0E-05 5.5E+00
Exposure Medium Total - Crab in Gowanus Canal 9.0E-05 5.5E+00
Total Fish Total of Receptor Risks - Fish 2.0E-04 Total of Receptor Hazards - Fish 2.7E+01
Total Blue Crab Total of Receptor Risks - Blur Crab 9.0E-05 Total of Receptor Hazards - Blue Crab 5.5E+00
Notes-
NA = Not available / Not applicable.
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used to adjust CSF for 0-2 year old for exposure duration of 2 years, ADAF of 3 used to adjust CSF for 2-6 year old for exposure duration of 4 years.
Non-cancer calculations shown under 0-2 year old only, as non-cancer calculations are not adjusted for MMOA.
TABLE 7.1.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Sediment Surface SedimentExposed and near shore sediment in Gowanus Canal
Ingestion
Acenaphthene 3.7E+02 mg/kg 2.0E-07 mg/kg-day NA NA 4.7E-06 mg/kg-day 6.0E-02 mg/kg-day 7.8E-05
Benzo(a)anthracene 1.3E+02 mg/kg 6.9E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 5.1E-08 1.6E-06 mg/kg-day NA NA
Benzo(a)pyrene 1.1E+02 mg/kg 5.8E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.3E-07 1.4E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 1.1E+02 mg/kg 6.2E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 4.5E-08 1.4E-06 mg/kg-day NA NA
Benzo(k)fluoranthene 6.5E+01 mg/kg 3.5E-08 mg/kg-day 7.3E-02 1/(mg/kg-day) 2.6E-09 8.2E-07 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 1.8E-08 mg/kg-day 1.4E-02 1/(mg/kg-day) 2.5E-10 4.2E-07 mg/kg-day 2.0E-02 mg/kg-day 2.1E-05
Chrysene 2.5E+02 mg/kg 1.4E-07 mg/kg-day 7.3E-03 1/(mg/kg-day) 1.0E-09 3.2E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 6.2E+00 mg/kg 3.4E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.5E-08 7.9E-08 mg/kg-day NA NA
Fluoranthene 5.0E+02 mg/kg 2.7E-07 mg/kg-day NA NA 6.3E-06 mg/kg-day 4.0E-02 mg/kg-day 1.6E-04
Indeno(1,2,3-c,d)pyrene 4.9E+01 mg/kg 2.7E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.9E-08 6.2E-07 mg/kg-day NA NA
Naphthalene 3.4E+00 mg/kg 1.9E-09 mg/kg-day NA NA 4.3E-08 mg/kg-day 2.0E-02 mg/kg-day 2.2E-06
Pyrene 5.3E+02 mg/kg 2.9E-07 mg/kg-day NA NA 6.7E-06 mg/kg-day 3.0E-02 mg/kg-day 2.2E-04
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 2.2E-14 mg/kg-day 1.6E+05 1/(mg/kg-day) 3.4E-09 5.1E-13 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 2.9E-09 mg/kg-day 1.0E+00 1/(mg/kg-day) 2.9E-09 6.7E-08 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 2.9E-09 mg/kg-day NA NA 6.9E-08 mg/kg-day 2.0E-05 mg/kg-day 3.4E-03
Aluminum 1.6E+04 mg/kg 8.7E-06 mg/kg-day NA NA 2.0E-04 mg/kg-day 1.0E+00 mg/kg-day 2.0E-04
Arsenic 1.8E+01 mg/kg 9.8E-09 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.5E-08 2.3E-07 mg/kg-day 3.0E-04 mg/kg-day 7.6E-04
Cadmium 9.6E+00 mg/kg 5.2E-09 mg/kg-day NA NA 1.2E-07 mg/kg-day 1.0E-03 mg/kg-day 1.2E-04
Chromium 9.4E+01 mg/kg 5.1E-08 mg/kg-day 5.0E-01 1/(mg/kg-day) 2.5E-08 1.2E-06 mg/kg-day 3.0E-03 mg/kg-day 4.0E-04
Cobalt 1.3E+01 mg/kg 7.0E-09 mg/kg-day NA NA 1.6E-07 mg/kg-day 3.0E-04 mg/kg-day 5.5E-04
Copper 3.5E+02 mg/kg 1.9E-07 mg/kg-day NA NA 4.5E-06 mg/kg-day 4.0E-02 mg/kg-day 1.1E-04
Iron 4.0E+04 mg/kg 2.2E-05 mg/kg-day NA NA 5.1E-04 mg/kg-day 7.0E-01 mg/kg-day 7.3E-04
Lead 1.9E+03 mg/kg 1.0E-06 mg/kg-day NA NA 2.4E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 1.7E-07 mg/kg-day NA NA 4.0E-06 mg/kg-day 1.4E-01 mg/kg-day 2.9E-05
Vanadium 5.0E+01 mg/kg 2.7E-08 mg/kg-day NA NA 6.4E-07 mg/kg-day 5.0E-03 mg/kg-day 1.3E-04
Exp. Route Total 6.2E-07 6.9E-03
TABLE 7.1.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Sediment Surface SedimentExposed and near shore sediment in Gowanus Canal
Dermal
Acenaphthene 3.7E+02 mg/kg 2.2E-06 mg/kg-day NA NA 5.0E-05 mg/kg-day 6.0E-02 mg/kg-day 8.4E-04
Benzo(a)anthracene 1.3E+02 mg/kg 7.5E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 5.5E-07 1.7E-05 mg/kg-day NA NA
Benzo(a)pyrene 1.1E+02 mg/kg 6.3E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.6E-06 1.5E-05 mg/kg-day NA NA
Benzo(b)fluoranthene 1.1E+02 mg/kg 6.7E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 4.9E-07 1.6E-05 mg/kg-day NA NA
Benzo(k)fluoranthene 6.5E+01 mg/kg 3.8E-07 mg/kg-day 7.3E-02 1/(mg/kg-day) 2.8E-08 8.9E-06 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 1.5E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 2.1E-09 3.5E-06 mg/kg-day 2.0E-02 mg/kg-day 1.8E-04
Chrysene 2.5E+02 mg/kg 1.5E-06 mg/kg-day 7.3E-03 1/(mg/kg-day) 1.1E-08 3.5E-05 mg/kg-day NA NA
Dibenz(a,h)anthracene 6.2E+00 mg/kg 3.6E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.7E-07 8.5E-07 mg/kg-day NA NA
Fluoranthene 5.0E+02 mg/kg 2.9E-06 mg/kg-day NA NA 6.8E-05 mg/kg-day 4.0E-02 mg/kg-day 1.7E-03
Indeno(1,2,3-c,d)pyrene 4.9E+01 mg/kg 2.9E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 2.1E-07 6.7E-06 mg/kg-day NA NA
Naphthalene 3.4E+00 mg/kg 2.0E-08 mg/kg-day NA NA 4.7E-07 mg/kg-day 2.0E-02 mg/kg-day 2.3E-05
Pyrene 5.3E+02 mg/kg 3.1E-06 mg/kg-day NA NA 7.3E-05 mg/kg-day 3.0E-02 mg/kg-day 2.4E-03
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 2.5E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 4.0E-08 5.9E-12 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 3.3E-08 mg/kg-day 1.0E+00 1/(mg/kg-day) 3.3E-08 7.7E-07 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 3.4E-08 mg/kg-day NA NA 8.0E-07 mg/kg-day 2.0E-05 mg/kg-day 4.0E-02
Aluminum 1.6E+04 mg/kg 7.2E-06 mg/kg-day NA NA 1.7E-04 mg/kg-day 1.0E+00 mg/kg-day 1.7E-04
Arsenic 1.8E+01 mg/kg 2.4E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 3.7E-08 5.7E-07 mg/kg-day 3.0E-04 mg/kg-day 1.9E-03
Cadmium 9.6E+00 mg/kg 4.4E-10 mg/kg-day NA NA 1.0E-08 mg/kg-day 2.5E-05 mg/kg-day 4.1E-04
Chromium 9.4E+01 mg/kg 4.2E-08 mg/kg-day 2.0E+01 1/(mg/kg-day) 8.5E-07 9.9E-07 mg/kg-day 7.5E-05 mg/kg-day 1.3E-02
Cobalt 1.3E+01 mg/kg 5.8E-09 mg/kg-day NA NA 1.4E-07 mg/kg-day 3.0E-04 mg/kg-day 4.5E-04
Copper 3.5E+02 mg/kg 1.6E-07 mg/kg-day NA NA 3.7E-06 mg/kg-day 4.0E-02 mg/kg-day 9.3E-05
Iron 4.0E+04 mg/kg 1.8E-05 mg/kg-day NA NA 4.2E-04 mg/kg-day 7.0E-01 mg/kg-day 6.0E-04
Lead 1.9E+03 mg/kg 8.5E-07 mg/kg-day NA NA 2.0E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 1.4E-07 mg/kg-day NA NA 3.3E-06 mg/kg-day 9.6E-04 mg/kg-day 3.5E-03
Vanadium 5.0E+01 mg/kg 2.3E-08 mg/kg-day NA NA 5.3E-07 mg/kg-day 5.0E-03 mg/kg-day 1.1E-04
Exp. Route Total 7.1E-06 6.5E-02
Exposure Point Total 7.7E-06 7.2E-02
7.7E-06 7.2E-02
Exposed Surface Sediment Total 7.7E-06 7.2E-02
Exposure Medium Total
TABLE 7.1.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Dry event) Benzene 2.2E+00 ug/L 1.6E-09 mg/kg-day 5.5E-02 1/(mg/kg-day) 8.7E-11 3.7E-08 mg/kg-day 4.0E-03 mg/kg-day 9.3E-06
Benzo(a)anthracene 2.7E-01 ug/L 1.9E-10 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.4E-10 4.4E-09 mg/kg-day NA NA
Benzo(a)pyrene 6.6E-01 ug/L 4.7E-10 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.4E-09 1.1E-08 mg/kg-day NA NA
Benzo(b)fluoranthene 3.0E-01 ug/L 2.1E-10 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.5E-10 4.9E-09 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 1.7E-09 mg/kg-day 1.4E-02 1/(mg/kg-day) 2.4E-11 4.1E-08 mg/kg-day 2.0E-02 mg/kg-day 2.0E-06
Indeno(1,2,3-c,d)pyrene 1.3E-01 ug/L 9.4E-11 mg/kg-day 7.3E-01 1/(mg/kg-day) 6.8E-11 2.2E-09 mg/kg-day NA NA
Arsenic 2.0E+01 ug/L 1.4E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.1E-08 3.3E-07 mg/kg-day 3.0E-04 mg/kg-day 1.1E-03
Chromium 1.9E+01 ug/L 1.3E-08 mg/kg-day 5.0E-01 1/(mg/kg-day) 6.7E-09 3.1E-07 mg/kg-day 3.0E-03 mg/kg-day 1.0E-04
Copper 1.7E+02 ug/L 1.2E-07 mg/kg-day NA NA 2.8E-06 mg/kg-day 4.0E-02 mg/kg-day 7.1E-05
Selenium 4.1E+01 ug/L 2.9E-08 mg/kg-day NA NA 6.8E-07 mg/kg-day 5.0E-03 mg/kg-day 1.4E-04
Exp. Route Total 3.2E-08 1.4E-03
Dermal
Benzene 2.2E+00 ug/L 2.4E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 1.3E-09 5.7E-07 mg/kg-day 4.0E-03 mg/kg-day 1.4E-04
Benzo(a)anthracene 2.7E-01 ug/L 2.2E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.6E-07 5.1E-06 mg/kg-day NA NA
Benzo(a)pyrene 6.6E-01 ug/L 9.4E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 6.8E-06 2.2E-05 mg/kg-day NA NA
Benzo(b)fluoranthene 3.0E-01 ug/L 4.3E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 3.1E-07 1.0E-05 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 2.5E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 3.5E-09 5.8E-06 mg/kg-day 2.0E-02 mg/kg-day 2.9E-04
Indeno(1,2,3-c,d)pyrene 1.3E-01 ug/L 1.9E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.4E-07 4.4E-06 mg/kg-day NA NA
Arsenic 2.0E+01 ug/L 1.0E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.5E-08 2.4E-07 mg/kg-day 3.0E-04 mg/kg-day 7.9E-04
Chromium 1.9E+01 ug/L 1.9E-08 mg/kg-day 2.0E+01 1/(mg/kg-day) 3.9E-07 4.5E-07 mg/kg-day 7.5E-05 mg/kg-day 6.0E-03
Copper 1.7E+02 ug/L 8.8E-08 mg/kg-day NA NA 2.0E-06 mg/kg-day 4.0E-02 mg/kg-day 5.1E-05
Selenium 4.1E+01 ug/L 2.1E-08 mg/kg-day NA NA 4.9E-07 mg/kg-day 5.0E-03 mg/kg-day 9.8E-05
Exp. Route Total 7.9E-06 7.4E-03
Exposure Point Total 7.9E-06 8.8E-03
7.9E-06 8.8E-03
Surface Water Total - Dry Event 7.9E-06 8.8E-03
Exposure Medium Total
TABLE 7.1.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 4.2E-10 mg/kg-day 5.4E-03 1/(mg/kg-day) 2.3E-12 9.8E-09 mg/kg-day 7.0E-02 mg/kg-day 1.4E-07
Benzene 8.4E-01 ug/L 5.9E-10 mg/kg-day 5.5E-02 1/(mg/kg-day) 3.3E-11 1.4E-08 mg/kg-day 4.0E-03 mg/kg-day 3.5E-06
Chloroform 5.6E-01 ug/L 4.0E-10 mg/kg-day 3.1E-02 1/(mg/kg-day) 1.2E-11 9.2E-09 mg/kg-day 1.0E-02 mg/kg-day 9.2E-07
Ethylbenzene 8.7E-01 ug/L 6.2E-10 mg/kg-day 1.1E-02 1/(mg/kg-day) 6.8E-12 1.4E-08 mg/kg-day 1.0E-01 mg/kg-day 1.4E-07
Tetrachloroethylene(PCE) 2.4E+01 ug/L 1.7E-08 mg/kg-day 5.4E-01 1/(mg/kg-day) 9.3E-09 4.0E-07 mg/kg-day 1.0E-02 mg/kg-day 4.0E-05
Benzo(a)anthracene 1.0E-01 ug/L 7.4E-11 mg/kg-day 7.3E-01 1/(mg/kg-day) 5.4E-11 1.7E-09 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 1.5E-10 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.1E-09 3.4E-09 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 1.3E-10 mg/kg-day 7.3E-01 1/(mg/kg-day) 9.8E-11 3.1E-09 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 7.2E-11 mg/kg-day 7.3E+00 1/(mg/kg-day) 5.2E-10 1.7E-09 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 3.5E-10 mg/kg-day 7.3E-01 1/(mg/kg-day) 2.6E-10 8.3E-09 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L 2.6E-10 mg/kg-day NA NA 6.0E-09 mg/kg-day 2.0E-02 mg/kg-day 3.0E-07
Arsenic 1.7E+01 ug/L 1.2E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.8E-08 2.7E-07 mg/kg-day 3.0E-04 mg/kg-day 9.2E-04
Chromium 8.5E+00 ug/L 6.0E-09 mg/kg-day 5.0E-01 1/(mg/kg-day) 3.0E-09 1.4E-07 mg/kg-day 3.0E-03 mg/kg-day 4.7E-05
Cobalt 3.9E+00 ug/L 2.8E-09 mg/kg-day NA NA 6.4E-08 mg/kg-day 3.0E-04 mg/kg-day 2.1E-04
Lead 1.5E+01 ug/L 1.1E-08 mg/kg-day NA NA 2.5E-07 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 2.4E-08 mg/kg-day NA NA 5.6E-07 mg/kg-day 5.0E-03 mg/kg-day 1.1E-04
Exp. Route Total 3.2E-08 1.3E-03
TABLE 7.1.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Dermal
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 2.6E-08 mg/kg-day 5.4E-03 1/(mg/kg-day) 1.4E-10 6.0E-07 mg/kg-day 7.0E-02 mg/kg-day 8.6E-06
Benzene 8.4E-01 ug/L 9.1E-09 mg/kg-day 5.5E-02 1/(mg/kg-day) 5.0E-10 2.1E-07 mg/kg-day 4.0E-03 mg/kg-day 5.3E-05
Chloroform 5.6E-01 ug/L 3.4E-09 mg/kg-day 3.1E-02 1/(mg/kg-day) 1.1E-10 8.0E-08 mg/kg-day 1.0E-02 mg/kg-day 8.0E-06
Ethylbenzene 8.7E-01 ug/L 3.5E-08 mg/kg-day 1.1E-02 1/(mg/kg-day) 3.8E-10 8.1E-07 mg/kg-day 1.0E-01 mg/kg-day 8.1E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 9.5E-07 mg/kg-day 5.4E-01 1/(mg/kg-day) 5.1E-07 2.2E-05 mg/kg-day 1.0E-02 mg/kg-day 2.2E-03
Benzo(a)anthracene 1.0E-01 ug/L 8.6E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 6.3E-08 2.0E-06 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 2.9E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.1E-06 6.8E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 2.7E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 2.0E-07 6.4E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 2.2E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.6E-06 5.2E-06 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 7.2E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 5.3E-07 1.7E-05 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L 1.6E-08 mg/kg-day NA NA 3.7E-07 mg/kg-day 2.0E-02 mg/kg-day 1.8E-05
Arsenic 1.7E+01 ug/L 8.5E-09 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.3E-08 2.0E-07 mg/kg-day 3.0E-04 mg/kg-day 6.6E-04
Chromium 8.5E+00 ug/L 8.7E-09 mg/kg-day 2.0E+01 1/(mg/kg-day) 1.7E-07 2.0E-07 mg/kg-day 7.5E-05 mg/kg-day 2.7E-03
Cobalt 3.9E+00 ug/L 8.0E-10 mg/kg-day NA NA 1.9E-08 mg/kg-day 3.0E-04 mg/kg-day 6.2E-05
Lead 1.5E+01 ug/L 7.6E-10 mg/kg-day NA NA 1.8E-08 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 1.7E-08 mg/kg-day NA NA 4.0E-07 mg/kg-day 5.0E-03 mg/kg-day 8.0E-05
Exp. Route Total 5.2E-06 5.8E-03
Exposure Point Total 5.3E-06 7.2E-03
5.3E-06 7.2E-03
Surface Water Total - Wet Event 5.3E-06 7.2E-03
Total Total of Receptor Risks Across All Media 1.6E-05 Total of Receptor Hazards Across All Media 8.1E-02
Notes-
NA = Not available / Not applicable.
DAevent for surface water from dry event calculated on Table 7.1.CTE Supplement A.
DAevent for surface water from wet event calculated on Table 7.1.CTE Supplement B.
Total includes sum of exposed and near shore sediment, and maximum of dry event and wet event surface water
Exposure Medium Total
TABLE 7.1.CTE Supplement A
Calculation of Daevent Dry Event
Recreational Scenario
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Water Permeability Lag Fraction Duration
of Potential Concentration Coefficient Time Absorbed Water of Event
Concern (CW) (Kp) B (τevent) t* (FA) (tevent) DAevent
(µg/L) (cm/hr) (dimensionless) (hr) (hr) (dimensionless) (hr) (mg/cm2-event) Eq
Benzene 2.2E+00 1.5E-02 5.1E-02 2.9E-01 7.0E-01 1.0E+00 1.3 6.2E-08 3
Benzo(a)anthracene 2.7E-01 4.7E-01 2.8E+00 2.0E+00 8.5E+00 1.0E+00 1.3 5.6E-07 2
Benzo(a)pyrene 6.6E-01 7.0E-01 4.3E+00 2.7E+00 1.2E+01 1.0E+00 1.3 2.4E-06 2
Benzo(b)fluoranthene 3.0E-01 7.0E-01 4.3E+00 2.8E+00 1.2E+01 1.0E+00 1.3 1.1E-06 2
Bis(2-ethylhexyl) phthalate 2.5E+00 2.5E-02 1.9E-01 1.7E+01 4.0E+01 8.0E-01 1.3 6.3E-07 2
Indeno(1,2,3-c,d)pyrene 1.3E-01 1.0E+00 6.7E+00 3.8E+00 1.7E+01 6.0E-01 1.3 4.9E-07 2
Arsenic 2.0E+01 1.0E-03 NA NA NA NA 1.3 2.6E-08 1
Chromium 1.9E+01 2.0E-03 NA NA NA NA 1.3 4.9E-08 1
Copper 1.7E+02 1.0E-03 NA NA NA NA 1.3 2.2E-07 1
Selenium 4.1E+01 1.0E-03 NA NA NA NA 1.3 5.3E-08 1
Inorganics: DAevent (mg/cm2-event) =
Kp x CW x tevent x 0.001 mg/µg x 0.001 l/cm3 (eq 1)
Organics: DAevent (mg/cm2-event) =
If tevent<t*, then DAevent =
2 x FA x Kp x CW x (sqrt((6 x τevent x tevent)/π)) x 0.001 mg/µg x 0.001 l/cm3 (eq 2)
If tevent>t*, then DAevent =
FA x Kp x CW x ( tevent/(1+B) + 2 x τevent x ((1 + 3xB + 3xB2)/(1+B)2) x 0.001 mg/µg x 0.001 l/cm3 (eq 3)
Notes:
NA - Not applicable
Permeability constants and other input parameter values from EPA 2004, Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual (Part E,
Supplemental Guidance for Dermal Risk Assessment - Final). EPA/540/R/99/005. The default value of 0.001 was assigned to inorganics not listed in this document.
B - Dimensionless ratio of the permeability coefficient of a compound through the stratum corneum relative to its permeability
coefficient across the viable epidermis (dimensionless).
t* - Time to reach steady-state
TABLE 7.1.CTE Supplement B
Calculation of Daevent Wet Event
Recreational Scenario
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Water Permeability Lag Fraction Duration
of Potential Concentration Coefficient Time Absorbed Water of Event
Concern (CW) (Kp) B (τevent) t* (FA) (tevent) DAevent
(µg/L) (cm/hr) (dimensionless) (hr) (hr) (dimensionless) (hr) (mg/cm2-event) Eq
1,4-dichlorobenzene 5.9E-01 4.2E-02 2.0E-01 7.1E-01 1.7E+00 1.0E+00 1.3 6.6E-08 2
Benzene 8.4E-01 1.5E-02 5.1E-02 2.9E-01 7.0E-01 1.0E+00 1.3 2.3E-08 3
Chloroform 5.6E-01 6.8E-03 2.9E-02 5.0E-01 1.2E+00 1.0E+00 1.3 8.7E-09 3
Ethylbenzene 8.7E-01 4.9E-02 2.0E-01 4.2E-01 1.0E+00 1.0E+00 1.3 8.9E-08 3
Tetrachloroethylene(PCE) 2.4E+01 3.3E-02 1.7E-01 9.1E-01 2.2E+00 1.0E+00 1.3 2.4E-06 2
Benzo(a)anthracene 1.0E-01 4.7E-01 2.8E+00 2.0E+00 8.5E+00 1.0E+00 1.3 2.2E-07 2
Benzo(a)pyrene 2.1E-01 7.0E-01 4.3E+00 2.7E+00 1.2E+01 1.0E+00 1.3 7.4E-07 2
Benzo(b)fluoranthene 1.9E-01 7.0E-01 4.3E+00 2.8E+00 1.2E+01 1.0E+00 1.3 6.9E-07 2
Dibenz(a,h)anthracene 1.0E-01 1.5E+00 9.7E+00 3.9E+00 1.8E+01 6.0E-01 1.3 5.6E-07 2
Indeno(1,2,3-c,d)pyrene 5.0E-01 1.0E+00 6.7E+00 3.8E+00 1.7E+01 6.0E-01 1.3 1.8E-06 2
Naphthalene 3.6E-01 4.7E-02 2.0E-01 5.6E-01 1.3E+00 1.0E+00 1.3 4.0E-08 2
Arsenic 1.7E+01 1.0E-03 NA NA NA NA 1.3 2.2E-08 1
Chromium 8.5E+00 2.0E-03 NA NA NA NA 1.3 2.2E-08 1
Cobalt 3.9E+00 4.0E-04 NA NA NA NA 1.3 2.0E-09 1
Lead 1.5E+01 1.0E-04 NA NA NA NA 1.3 1.9E-09 1
Selenium 3.4E+01 1.0E-03 NA NA NA NA 1.3 4.4E-08 1
Inorganics: DAevent (mg/cm2-event) =
Kp x CW x tevent x 0.001 mg/µg x 0.001 l/cm3 (eq 1)
Organics: DAevent (mg/cm2-event) =
If tevent<t*, then DAevent =
2 x FA x Kp x CW x (sqrt((6 x τevent x tevent)/π)) x 0.001 mg/µg x 0.001 l/cm3 (eq 2)
If tevent>t*, then DAevent =
FA x Kp x CW x ( tevent/(1+B) + 2 x τevent x ((1 + 3xB + 3xB2)/(1+B)2) x 0.001 mg/µg x 0.001 l/cm3 (eq 3)
Notes:
NA - Not applicable
Permeability constants and other input parameter values from EPA 2004, Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual (Part E,
Supplemental Guidance for Dermal Risk Assessment - Final). EPA/540/R/99/005. The default value of 0.001 was assigned to inorganics not listed in this document.
B - Dimensionless ratio of the permeability coefficient of a compound through the stratum corneum relative to its permeability
coefficient across the viable epidermis (dimensionless).
t* - Time to reach steady-state
TABLE 7.2.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Sediment Surface SedimentExposed and near shore sediment in Gowanus Canal
Ingestion
Acenaphthene 3.7E+02 mg/kg 2.5E-07 mg/kg-day NA NA 5.7E-06 mg/kg-day 6.0E-02 mg/kg-day 9.5E-05
Benzo(a)anthracene (12-15)* 1.3E+02 mg/kg 8.5E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.9E-07 2.0E-06 mg/kg-day NA NA
Benzo(a)pyrene (12-15)* 1.1E+02 mg/kg 7.2E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.6E-06 1.7E-06 mg/kg-day NA NA
Benzo(b)fluoranthene (12-15)* 1.1E+02 mg/kg 7.6E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.7E-07 1.8E-06 mg/kg-day NA NA
Benzo(k)fluoranthene (12-15)* 6.5E+01 mg/kg 4.3E-08 mg/kg-day 2.2E-01 1/(mg/kg-day) 9.5E-09 1.0E-06 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 2.2E-08 mg/kg-day 1.4E-02 1/(mg/kg-day) 3.1E-10 5.2E-07 mg/kg-day 2.0E-02 mg/kg-day 2.6E-05
Chrysene (12-15)* 2.5E+02 mg/kg 1.7E-07 mg/kg-day 2.2E-02 1/(mg/kg-day) 3.7E-09 4.0E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (12-15)* 6.2E+00 mg/kg 4.1E-09 mg/kg-day 2.2E+01 1/(mg/kg-day) 9.1E-08 9.7E-08 mg/kg-day NA NA
Fluoranthene 5.0E+02 mg/kg 3.3E-07 mg/kg-day NA NA 7.7E-06 mg/kg-day 4.0E-02 mg/kg-day 1.9E-04
Indeno(1,2,3-c,d)pyrene (12-15)* 4.9E+01 mg/kg 3.3E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 7.2E-08 7.6E-07 mg/kg-day NA NA
Naphthalene 3.4E+00 mg/kg 2.3E-09 mg/kg-day NA NA 5.3E-08 mg/kg-day 2.0E-02 mg/kg-day 2.7E-06
Pyrene 5.3E+02 mg/kg 3.5E-07 mg/kg-day NA NA 8.3E-06 mg/kg-day 3.0E-02 mg/kg-day 2.8E-04
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 2.7E-14 mg/kg-day 1.6E+05 1/(mg/kg-day) 4.2E-09 6.3E-13 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 3.5E-09 mg/kg-day 1.0E+00 1/(mg/kg-day) 3.5E-09 8.2E-08 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 3.6E-09 mg/kg-day NA NA 8.4E-08 mg/kg-day 2.0E-05 mg/kg-day 4.2E-03
Aluminum 1.6E+04 mg/kg 1.1E-05 mg/kg-day NA NA 2.5E-04 mg/kg-day 1.0E+00 mg/kg-day 2.5E-04
Arsenic 1.8E+01 mg/kg 1.2E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.8E-08 2.8E-07 mg/kg-day 3.0E-04 mg/kg-day 9.4E-04
Cadmium 9.6E+00 mg/kg 6.4E-09 mg/kg-day NA NA 1.5E-07 mg/kg-day 1.0E-03 mg/kg-day 1.5E-04
Chromium (12-15)* 9.4E+01 mg/kg 6.3E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 9.4E-08 1.5E-06 mg/kg-day 3.0E-03 mg/kg-day 4.9E-04
Cobalt 1.3E+01 mg/kg 8.6E-09 mg/kg-day NA NA 2.0E-07 mg/kg-day 3.0E-04 mg/kg-day 6.7E-04
Copper 3.5E+02 mg/kg 2.4E-07 mg/kg-day NA NA 5.5E-06 mg/kg-day 4.0E-02 mg/kg-day 1.4E-04
Iron 4.0E+04 mg/kg 2.7E-05 mg/kg-day NA NA 6.2E-04 mg/kg-day 7.0E-01 mg/kg-day 8.9E-04
Lead 1.9E+03 mg/kg 1.3E-06 mg/kg-day NA NA 2.9E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 2.1E-07 mg/kg-day NA NA 4.9E-06 mg/kg-day 1.4E-01 mg/kg-day 3.5E-05
Vanadium 5.0E+01 mg/kg 3.4E-08 mg/kg-day NA NA 7.8E-07 mg/kg-day 5.0E-03 mg/kg-day 1.6E-04
Exp. Route Total 2.2E-06 8.5E-03
TABLE 7.2.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Sediment Surface SedimentExposed and near shore sediment in Gowanus Canal
Dermal
Acenaphthene 3.7E+02 mg/kg 2.7E-06 mg/kg-day NA NA 6.2E-05 mg/kg-day 6.0E-02 mg/kg-day 1.0E-03
Benzo(a)anthracene (12-15)* 1.3E+02 mg/kg 9.3E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.0E-06 2.2E-05 mg/kg-day NA NA
Benzo(a)pyrene (12-15)* 1.1E+02 mg/kg 7.8E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.7E-05 1.8E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (12-15)* 1.1E+02 mg/kg 8.2E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.8E-06 1.9E-05 mg/kg-day NA NA
Benzo(k)fluoranthene (12-15)* 6.5E+01 mg/kg 4.7E-07 mg/kg-day 2.2E-01 1/(mg/kg-day) 1.0E-07 1.1E-05 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 1.9E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 2.6E-09 4.4E-06 mg/kg-day 2.0E-02 mg/kg-day 2.2E-04
Chrysene (12-15)* 2.5E+02 mg/kg 1.8E-06 mg/kg-day 2.2E-02 1/(mg/kg-day) 4.0E-08 4.3E-05 mg/kg-day NA NA
Dibenz(a,h)anthracene (12-15)* 6.2E+00 mg/kg 4.5E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 9.9E-07 1.1E-06 mg/kg-day NA NA
Fluoranthene 5.0E+02 mg/kg 3.6E-06 mg/kg-day NA NA 8.4E-05 mg/kg-day 4.0E-02 mg/kg-day 2.1E-03
Indeno(1,2,3-c,d)pyrene (12-15)* 4.9E+01 mg/kg 3.6E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 7.8E-07 8.3E-06 mg/kg-day NA NA
Naphthalene 3.4E+00 mg/kg 2.5E-08 mg/kg-day NA NA 5.8E-07 mg/kg-day 2.0E-02 mg/kg-day 2.9E-05
Pyrene 5.3E+02 mg/kg 3.9E-06 mg/kg-day NA NA 9.0E-05 mg/kg-day 3.0E-02 mg/kg-day 3.0E-03
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 3.2E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 4.9E-08 7.4E-12 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 4.1E-08 mg/kg-day 1.0E+00 1/(mg/kg-day) 4.1E-08 9.6E-07 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 4.2E-08 mg/kg-day NA NA 9.9E-07 mg/kg-day 2.0E-05 mg/kg-day 4.9E-02
Aluminum 1.6E+04 mg/kg 8.9E-06 mg/kg-day NA NA 2.1E-04 mg/kg-day 1.0E+00 mg/kg-day 2.1E-04
Arsenic 1.8E+01 mg/kg 3.0E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.5E-08 7.1E-07 mg/kg-day 3.0E-04 mg/kg-day 2.4E-03
Cadmium 9.6E+00 mg/kg 5.4E-10 mg/kg-day NA NA 1.3E-08 mg/kg-day 2.5E-05 mg/kg-day 5.0E-04
Chromium (12-15)* 9.4E+01 mg/kg 5.2E-08 mg/kg-day 6.0E+01 1/(mg/kg-day) 3.1E-06 1.2E-06 mg/kg-day 7.5E-05 mg/kg-day 1.6E-02
Cobalt 1.3E+01 mg/kg 7.2E-09 mg/kg-day NA NA 1.7E-07 mg/kg-day 3.0E-04 mg/kg-day 5.6E-04
Copper 3.5E+02 mg/kg 2.0E-07 mg/kg-day NA NA 4.6E-06 mg/kg-day 4.0E-02 mg/kg-day 1.2E-04
Iron 4.0E+04 mg/kg 2.2E-05 mg/kg-day NA NA 5.2E-04 mg/kg-day 7.0E-01 mg/kg-day 7.5E-04
Lead 1.9E+03 mg/kg 1.0E-06 mg/kg-day NA NA 2.4E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 1.8E-07 mg/kg-day NA NA 4.1E-06 mg/kg-day 9.6E-04 mg/kg-day 4.3E-03
Vanadium 5.0E+01 mg/kg 2.8E-08 mg/kg-day NA NA 6.6E-07 mg/kg-day 5.0E-03 mg/kg-day 1.3E-04
Exp. Route Total 2.6E-05 8.1E-02
Exposure Point Total 2.8E-05 8.9E-02
2.8E-05 8.9E-02
Exposed Surface Sediment Total 2.8E-05 8.9E-02
Exposure Medium Total
TABLE 7.2.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Dry event) Benzene 2.2E+00 ug/L 1.9E-09 mg/kg-day 5.5E-02 1/(mg/kg-day) 1.1E-10 4.5E-08 mg/kg-day 4.0E-03 mg/kg-day 1.1E-05
Benzo(a)anthracene (12-15)* 2.7E-01 ug/L 2.3E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 5.1E-10 5.4E-09 mg/kg-day NA NA
Benzo(a)pyrene (12-15)* 6.6E-01 ug/L 5.7E-10 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.3E-08 1.3E-08 mg/kg-day NA NA
Benzo(b)fluoranthene (12-15)* 3.0E-01 ug/L 2.6E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 5.7E-10 6.1E-09 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 2.1E-09 mg/kg-day 1.4E-02 1/(mg/kg-day) 3.0E-11 5.0E-08 mg/kg-day 2.0E-02 mg/kg-day 2.5E-06
Indeno(1,2,3-c,d)pyrene (12-15)* 1.3E-01 ug/L 1.1E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.5E-10 2.7E-09 mg/kg-day NA NA
Arsenic 2.0E+01 ug/L 1.7E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.6E-08 4.0E-07 mg/kg-day 3.0E-04 mg/kg-day 1.3E-03
Chromium (12-15)* 1.9E+01 ug/L 1.6E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.5E-08 3.8E-07 mg/kg-day 3.0E-03 mg/kg-day 1.3E-04
Copper 1.7E+02 ug/L 1.5E-07 mg/kg-day NA 3.5E-06 mg/kg-day 4.0E-02 mg/kg-day 8.7E-05
Selenium 4.1E+01 ug/L 3.6E-08 mg/kg-day NA 8.3E-07 mg/kg-day 5.0E-03 mg/kg-day 1.7E-04
Exp. Route Total 6.5E-08 1.7E-03
Dermal
Benzene 2.2E+00 ug/L 2.6E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 1.4E-09 6.1E-07 mg/kg-day 4.0E-03 mg/kg-day 1.5E-04
Benzo(a)anthracene (12-15)* 2.7E-01 ug/L 2.4E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 5.2E-07 5.5E-06 mg/kg-day NA NA
Benzo(a)pyrene (12-15)* 6.6E-01 ug/L 1.0E-06 mg/kg-day 2.2E+01 1/(mg/kg-day) 2.2E-05 2.4E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (12-15)* 3.0E-01 ug/L 4.6E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.0E-06 1.1E-05 mg/kg-day NA NA
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 2.7E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 3.7E-09 6.2E-06 mg/kg-day 2.0E-02 mg/kg-day 3.1E-04
Indeno(1,2,3-c,d)pyrene (12-15)* 1.3E-01 ug/L 2.0E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 4.5E-07 4.8E-06 mg/kg-day NA NA
Arsenic 2.0E+01 ug/L 1.1E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.6E-08 2.5E-07 mg/kg-day 3.0E-04 mg/kg-day 8.5E-04
Chromium (12-15)* 1.9E+01 ug/L 2.1E-08 mg/kg-day 6.0E+01 1/(mg/kg-day) 1.2E-06 4.8E-07 mg/kg-day 7.5E-05 mg/kg-day 6.5E-03
Copper 1.7E+02 ug/L 9.4E-08 mg/kg-day NA NA 2.2E-06 mg/kg-day 4.0E-02 mg/kg-day 5.5E-05
Selenium 4.1E+01 ug/L 2.2E-08 mg/kg-day NA NA 5.2E-07 mg/kg-day 5.0E-03 mg/kg-day 1.0E-04
Exp. Route Total 2.5E-05 7.9E-03
Exposure Point Total 2.5E-05 9.7E-03
2.5E-05 9.7E-03
Surface Water Total - Dry Event 2.5E-05 9.7E-03
Exposure Medium Total
TABLE 7.2.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 5.1E-10 mg/kg-day 5.4E-03 1/(mg/kg-day) 2.8E-12 1.2E-08 mg/kg-day 7.0E-02 mg/kg-day 1.7E-07
Benzene 8.4E-01 ug/L 7.3E-10 mg/kg-day 5.5E-02 1/(mg/kg-day) 4.0E-11 1.7E-08 mg/kg-day 4.0E-03 mg/kg-day 4.2E-06
Chloroform 5.6E-01 ug/L 4.9E-10 mg/kg-day 3.1E-02 1/(mg/kg-day) 1.5E-11 1.1E-08 mg/kg-day 1.0E-02 mg/kg-day 1.1E-06
Ethylbenzene 8.7E-01 ug/L 7.6E-10 mg/kg-day 1.1E-02 1/(mg/kg-day) 8.3E-12 1.8E-08 mg/kg-day 1.0E-01 mg/kg-day 1.8E-07
Tetrachloroethylene(PCE) 2.4E+01 ug/L 2.1E-08 mg/kg-day 5.4E-01 1/(mg/kg-day) 1.1E-08 5.0E-07 mg/kg-day 1.0E-02 mg/kg-day 5.0E-05
Benzo(a)anthracene (12-15)* 1.0E-01 ug/L 9.1E-11 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.0E-10 2.1E-09 mg/kg-day NA NA
Benzo(a)pyrene (12-15)* 2.1E-01 ug/L 1.8E-10 mg/kg-day 2.2E+01 1/(mg/kg-day) 3.9E-09 4.2E-09 mg/kg-day NA NA
Benzo(b)fluoranthene (12-15)* 1.9E-01 ug/L 1.6E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 3.6E-10 3.8E-09 mg/kg-day NA NA
Dibenz(a,h)anthracene (12-15)* 1.0E-01 ug/L 8.8E-11 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.9E-09 2.1E-09 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (12-15)* 5.0E-01 ug/L 4.4E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 9.5E-10 1.0E-08 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L 3.2E-10 mg/kg-day NA NA 7.4E-09 mg/kg-day 2.0E-02 mg/kg-day 3.7E-07
Arsenic 1.7E+01 ug/L 1.4E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.2E-08 3.4E-07 mg/kg-day 3.0E-04 mg/kg-day 1.1E-03
Chromium (12-15)* 8.5E+00 ug/L 7.4E-09 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.1E-08 1.7E-07 mg/kg-day 3.0E-03 mg/kg-day 5.8E-05
Cobalt 3.9E+00 ug/L 3.4E-09 mg/kg-day NA NA 7.9E-08 mg/kg-day 3.0E-04 mg/kg-day 2.6E-04
Lead 1.5E+01 ug/L 1.3E-08 mg/kg-day NA NA 3.0E-07 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 2.9E-08 mg/kg-day NA NA 6.8E-07 mg/kg-day 5.0E-03 mg/kg-day 1.4E-04
Exp. Route Total 5.2E-08 1.6E-03
TABLE 7.2.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Dermal
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 2.8E-08 mg/kg-day 5.4E-03 1/(mg/kg-day) 1.5E-10 6.5E-07 mg/kg-day 7.0E-02 mg/kg-day 9.3E-06
Benzene 8.4E-01 ug/L 9.8E-09 mg/kg-day 5.5E-02 1/(mg/kg-day) 5.4E-10 2.3E-07 mg/kg-day 4.0E-03 mg/kg-day 5.7E-05
Chloroform 5.6E-01 ug/L 3.7E-09 mg/kg-day 3.1E-02 1/(mg/kg-day) 1.1E-10 8.6E-08 mg/kg-day 1.0E-02 mg/kg-day 8.6E-06
Ethylbenzene 8.7E-01 ug/L 3.7E-08 mg/kg-day 1.1E-02 1/(mg/kg-day) 4.1E-10 8.7E-07 mg/kg-day 1.0E-01 mg/kg-day 8.7E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 1.0E-06 mg/kg-day 5.4E-01 1/(mg/kg-day) 5.5E-07 2.4E-05 mg/kg-day 1.0E-02 mg/kg-day 2.4E-03
Benzo(a)anthracene (12-15)* 1.0E-01 ug/L 9.3E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.0E-07 2.2E-06 mg/kg-day NA NA
Benzo(a)pyrene (12-15)* 2.1E-01 ug/L 3.1E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 6.9E-06 7.3E-06 mg/kg-day NA NA
Benzo(b)fluoranthene (12-15)* 1.9E-01 ug/L 2.9E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 6.4E-07 6.8E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (12-15)* 1.0E-01 ug/L 2.4E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 5.2E-06 5.6E-06 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (12-15)* 5.0E-01 ug/L 7.8E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.7E-06 1.8E-05 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L 1.7E-08 mg/kg-day NA NA 4.0E-07 mg/kg-day 2.0E-02 mg/kg-day 2.0E-05
Arsenic 1.7E+01 ug/L 9.1E-09 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.4E-08 2.1E-07 mg/kg-day 3.0E-04 mg/kg-day 7.1E-04
Chromium (12-15)* 8.5E+00 ug/L 9.4E-09 mg/kg-day 6.0E+01 1/(mg/kg-day) 5.6E-07 2.2E-07 mg/kg-day 7.5E-05 mg/kg-day 2.9E-03
Cobalt 3.9E+00 ug/L 8.6E-10 mg/kg-day NA NA 2.0E-08 mg/kg-day 3.0E-04 mg/kg-day 6.7E-05
Lead 1.5E+01 ug/L 8.2E-10 mg/kg-day NA NA 1.9E-08 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 1.8E-08 mg/kg-day NA NA 4.3E-07 mg/kg-day 5.0E-03 mg/kg-day 8.6E-05
Exp. Route Total 1.6E-05 6.3E-03
Exposure Point Total 1.6E-05 7.9E-03
1.6E-05 7.9E-03
Surface Water Total - Wet Event 1.6E-05 7.9E-03
Total Total of Receptor Risks Across All Media 5.4E-05 Total of Receptor Hazards Across All Media 9.9E-02
Notes-
NA = Not available / Not applicable.
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 3 used to adjust CSF for 12-15 year old for exposure duration of 3 years, the CTE exposure duration for an adolescent.
DAevent for surface water from dry event calculated on Table 7.1.CTE Supplement A.
DAevent for surface water from wet event calculated on Table 7.1.CTE Supplement B.
Total includes sum of exposed and near shore sediment, and maximum of dry event and wet event surface water
Exposure Medium Total
TABLE 7.3.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Sediment Surface SedimentExposed and near shore sediment in Gowanus Canal
Ingestion
Acenaphthene 3.7E+02 mg/kg 1.9E-06 mg/kg-day NA NA 4.3E-05 mg/kg-day 6.0E-02 mg/kg-day 7.2E-04
Benzo(a)anthracene (0-2)* 1.3E+02 mg/kg 4.3E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.1E-06 1.5E-05 mg/kg-day NA NA
Benzo(a)anthracene (2-3)* 1.3E+02 mg/kg 2.2E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 4.7E-07
Benzo(a)pyrene (0-2)* 1.1E+02 mg/kg 3.6E-07 mg/kg-day 7.3E+01 1/(mg/kg-day) 2.6E-05 1.3E-05 mg/kg-day NA NA
Benzo(a)pyrene (2-3)* 1.1E+02 mg/kg 1.8E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 4.0E-06
Benzo(b)fluoranthene (0-2)* 1.1E+02 mg/kg 3.8E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.8E-06 1.3E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (2-3)* 1.1E+02 mg/kg 1.9E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 4.2E-07
Benzo(k)fluoranthene (0-2)* 6.5E+01 mg/kg 2.2E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 1.6E-07 7.7E-06 mg/kg-day NA NA
Benzo(k)fluoranthene (2-3)* 6.5E+01 mg/kg 1.1E-07 mg/kg-day 2.2E-01 1/(mg/kg-day) 2.4E-08
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 1.7E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 2.4E-09 4.0E-06 mg/kg-day 2.0E-02 mg/kg-day 2.0E-04
Chrysene (0-2)* 2.5E+02 mg/kg 8.6E-07 mg/kg-day 7.3E-02 1/(mg/kg-day) 6.3E-08 3.0E-05 mg/kg-day NA NA
Chrysene (2-3)* 2.5E+02 mg/kg 4.3E-07 mg/kg-day 2.2E-02 1/(mg/kg-day) 9.4E-09
Dibenz(a,h)anthracene (0-2)* 6.2E+00 mg/kg 2.1E-08 mg/kg-day 7.3E+01 1/(mg/kg-day) 1.5E-06 7.3E-07 mg/kg-day NA NA
Dibenz(a,h)anthracene (0-2)* 6.2E+00 mg/kg 1.0E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 2.3E-07
Fluoranthene 5.0E+02 mg/kg 2.5E-06 mg/kg-day NA NA 5.9E-05 mg/kg-day 4.0E-02 mg/kg-day 1.5E-03
Indeno(1,2,3-c,d)pyrene (0-2)* 4.9E+01 mg/kg 1.7E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.2E-06 5.8E-06 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-3)* 4.9E+01 mg/kg 8.3E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.8E-07
Naphthalene 3.4E+00 mg/kg 1.7E-08 mg/kg-day NA NA 4.0E-07 mg/kg-day 2.0E-02 mg/kg-day 2.0E-05
Pyrene 5.3E+02 mg/kg 2.7E-06 mg/kg-day NA NA 6.3E-05 mg/kg-day 3.0E-02 mg/kg-day 2.1E-03
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 2.0E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 3.2E-08 4.8E-12 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 2.7E-08 mg/kg-day 1.0E+00 1/(mg/kg-day) 2.7E-08 6.2E-07 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 2.7E-08 mg/kg-day NA NA 6.4E-07 mg/kg-day 2.0E-05 mg/kg-day 3.2E-02
Aluminum 1.6E+04 mg/kg 8.1E-05 mg/kg-day NA NA 1.9E-03 mg/kg-day 1.0E+00 mg/kg-day 1.9E-03
Arsenic 1.8E+01 mg/kg 9.2E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.4E-07 2.1E-06 mg/kg-day 3.0E-04 mg/kg-day 7.1E-03
Cadmium 9.6E+00 mg/kg 4.9E-08 mg/kg-day NA NA 1.1E-06 mg/kg-day 1.0E-03 mg/kg-day 1.1E-03
Chromium (0-2)* 9.4E+01 mg/kg 3.2E-07 mg/kg-day 5.0E+00 1/(mg/kg-day) 1.6E-06 1.1E-05 mg/kg-day 3.0E-03 mg/kg-day 3.7E-03
Chromium (2-3)* 9.4E+01 mg/kg 1.6E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.4E-07
Cobalt 1.3E+01 mg/kg 6.6E-08 mg/kg-day NA NA 1.5E-06 mg/kg-day 3.0E-04 mg/kg-day 5.1E-03
Copper 3.5E+02 mg/kg 1.8E-06 mg/kg-day NA NA 4.2E-05 mg/kg-day 4.0E-02 mg/kg-day 1.0E-03
Iron 4.0E+04 mg/kg 2.0E-04 mg/kg-day NA NA 4.7E-03 mg/kg-day 7.0E-01 mg/kg-day 6.8E-03
Lead 1.9E+03 mg/kg 9.5E-06 mg/kg-day NA NA 2.2E-04 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 1.6E-06 mg/kg-day NA NA 3.7E-05 mg/kg-day 1.4E-01 mg/kg-day 2.7E-04
Vanadium 5.0E+01 mg/kg 2.5E-07 mg/kg-day NA NA 5.9E-06 mg/kg-day 5.0E-03 mg/kg-day 1.2E-03
Exp. Route Total 4.3E-05 6.5E-02
TABLE 7.3.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Sediment Surface SedimentExposed and near shore sediment in Gowanus Canal
Dermal
Acenaphthene 3.7E+02 mg/kg 2.7E-06 mg/kg-day NA NA 6.3E-05 mg/kg-day 6.0E-02 mg/kg-day 1.1E-03
Benzo(a)anthracene (0-2)* 1.3E+02 mg/kg 6.3E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.6E-06 2.2E-05 mg/kg-day NA NA
Benzo(a)anthracene (2-3)* 1.3E+02 mg/kg 3.1E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 6.9E-07
Benzo(a)pyrene (0-2)* 1.1E+02 mg/kg 5.3E-07 mg/kg-day 7.3E+01 1/(mg/kg-day) 3.9E-05 1.8E-05 mg/kg-day NA NA
Benzo(a)pyrene (2-3)* 1.1E+02 mg/kg 2.6E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 5.8E-06
Benzo(b)fluoranthene (0-2)* 1.1E+02 mg/kg 5.6E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.1E-06 2.0E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (2-3)* 1.1E+02 mg/kg 2.8E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 6.1E-07
Benzo(k)fluoranthene (0-2)* 6.5E+01 mg/kg 3.2E-07 mg/kg-day 7.3E-01 1/(mg/kg-day) 2.3E-07 1.1E-05 mg/kg-day NA NA
Benzo(k)fluoranthene (2-3)* 6.5E+01 mg/kg 1.6E-07 mg/kg-day 2.2E-01 1/(mg/kg-day) 3.5E-08
Bis(2-ethylhexyl) phthalate 3.3E+01 mg/kg 1.9E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 2.7E-09 4.4E-06 mg/kg-day 2.0E-02 mg/kg-day 2.2E-04
Chrysene (0-2)* 2.5E+02 mg/kg 1.2E-06 mg/kg-day 7.3E-02 1/(mg/kg-day) 9.1E-08 4.4E-05 mg/kg-day NA NA
Chrysene (2-3)* 2.5E+02 mg/kg 6.2E-07 mg/kg-day 2.2E-02 1/(mg/kg-day) 1.4E-08
Dibenz(a,h)anthracene (0-2)* 6.2E+00 mg/kg 3.1E-08 mg/kg-day 7.3E+01 1/(mg/kg-day) 2.2E-06 1.1E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (0-2)* 6.2E+00 mg/kg 1.5E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 3.3E-07
Fluoranthene 5.0E+02 mg/kg 3.7E-06 mg/kg-day NA NA 8.6E-05 mg/kg-day 4.0E-02 mg/kg-day 2.1E-03
Indeno(1,2,3-c,d)pyrene (0-2)* 4.9E+01 mg/kg 2.4E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.8E-06 8.5E-06 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-3)* 4.9E+01 mg/kg 1.2E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.6E-07
Naphthalene 3.4E+00 mg/kg 2.5E-08 mg/kg-day NA NA 5.9E-07 mg/kg-day 2.0E-02 mg/kg-day 2.9E-05
Pyrene 5.3E+02 mg/kg 3.9E-06 mg/kg-day NA NA 9.1E-05 mg/kg-day 3.0E-02 mg/kg-day 3.0E-03
Dioxin-Like PCB TEQ 4.0E-05 mg/kg 3.2E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 5.0E-08 7.5E-12 mg/kg-day NA NA
Nondioxin-Like PCB 5.2E+00 mg/kg 4.2E-08 mg/kg-day 1.0E+00 1/(mg/kg-day) 4.2E-08 9.7E-07 mg/kg-day NA NA
Total PCB 5.4E+00 mg/kg 4.3E-08 mg/kg-day NA NA 1.0E-06 mg/kg-day 2.0E-05 mg/kg-day 5.0E-02
Aluminum 1.6E+04 mg/kg 9.1E-06 mg/kg-day NA NA 2.1E-04 mg/kg-day 1.0E+00 mg/kg-day 2.1E-04
Arsenic 1.8E+01 mg/kg 3.1E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.6E-08 7.2E-07 mg/kg-day 3.0E-04 mg/kg-day 2.4E-03
Cadmium 9.6E+00 mg/kg 5.5E-10 mg/kg-day NA NA 1.3E-08 mg/kg-day 2.5E-05 mg/kg-day 5.1E-04
Chromium (0-2)* 9.4E+01 mg/kg 3.6E-08 mg/kg-day 2.0E+02 1/(mg/kg-day) 7.1E-06 1.2E-06 mg/kg-day 7.5E-05 mg/kg-day 1.7E-02
Chromium (2-3)* 9.4E+01 mg/kg 1.8E-08 mg/kg-day 6.0E+01 1/(mg/kg-day) 1.1E-06
Cobalt 1.3E+01 mg/kg 7.4E-09 mg/kg-day NA NA 1.7E-07 mg/kg-day 3.0E-04 mg/kg-day 5.7E-04
Copper 3.5E+02 mg/kg 2.0E-07 mg/kg-day NA NA 4.7E-06 mg/kg-day 4.0E-02 mg/kg-day 1.2E-04
Iron 4.0E+04 mg/kg 2.3E-05 mg/kg-day NA NA 5.3E-04 mg/kg-day 7.0E-01 mg/kg-day 7.6E-04
Lead 1.9E+03 mg/kg 1.1E-06 mg/kg-day NA NA 2.5E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg 1.8E-07 mg/kg-day NA NA 4.2E-06 mg/kg-day 9.6E-04 mg/kg-day 4.3E-03
Vanadium 5.0E+01 mg/kg 2.9E-08 mg/kg-day NA NA 6.7E-07 mg/kg-day 5.0E-03 mg/kg-day 1.3E-04
Exp. Route Total 6.8E-05 8.2E-02
Exposure Point Total 1.1E-04 1.5E-01
1.1E-04 1.5E-01Exposure Medium Total
TABLE 7.3.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Exposed Surface Sediment Total 1.1E-04 1.5E-01
TABLE 7.3.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Dry event) Benzene 2.2E+00 ug/L 7.4E-09 mg/kg-day 5.5E-02 1/(mg/kg-day) 4.1E-10 1.7E-07 mg/kg-day 4.0E-03 mg/kg-day 4.3E-05
Benzo(a)anthracene (0-2)* 2.7E-01 ug/L 5.9E-10 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.3E-09 2.1E-08 mg/kg-day NA NA
Benzo(a)anthracene (2-3)* 2.7E-01 ug/L 2.9E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 6.4E-10
Benzo(a)pyrene (0-2)* 6.6E-01 ug/L 1.5E-09 mg/kg-day 7.3E+01 1/(mg/kg-day) 1.1E-07 5.1E-08 mg/kg-day NA NA
Benzo(a)pyrene (2-3)* 6.6E-01 ug/L 7.3E-10 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.6E-08
Benzo(b)fluoranthene (0-2)* 3.0E-01 ug/L 6.6E-10 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.8E-09 2.3E-08 mg/kg-day NA NA
Benzo(b)fluoranthene (2-3)* 3.0E-01 ug/L 3.3E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 7.2E-10
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 8.1E-09 mg/kg-day 1.4E-02 1/(mg/kg-day) 1.1E-10 1.9E-07 mg/kg-day 2.0E-02 mg/kg-day 9.5E-06
Indeno(1,2,3-c,d)pyrene (0-2)* 1.3E-01 ug/L 2.9E-10 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.1E-09 1.0E-08 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-3)* 1.3E-01 ug/L 1.5E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 3.2E-10
Arsenic 2.0E+01 ug/L 6.6E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 9.9E-08 1.5E-06 mg/kg-day 3.0E-04 mg/kg-day 5.1E-03
Chromium (0-2)* 1.9E+01 ug/L 4.2E-08 mg/kg-day 5.0E+00 1/(mg/kg-day) 2.1E-07 1.5E-06 mg/kg-day 3.0E-03 mg/kg-day 4.9E-04
Chromium (2-3)* 1.9E+01 ug/L 2.1E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 3.1E-08
Copper 1.7E+02 ug/L 5.7E-07 mg/kg-day NA 1.3E-05 mg/kg-day 4.0E-02 mg/kg-day 3.3E-04
Selenium 4.1E+01 ug/L 1.4E-07 mg/kg-day NA 3.2E-06 mg/kg-day 5.0E-03 mg/kg-day 6.3E-04
Exp. Route Total 4.7E-07 6.6E-03
Dermal
Benzene 2.2E+00 ug/L 4.2E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 2.3E-09 9.7E-07 mg/kg-day 4.0E-03 mg/kg-day 2.4E-04
Benzo(a)anthracene (0-2)* 2.7E-01 ug/L 2.5E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.8E-06 8.8E-06 mg/kg-day NA NA
Benzo(a)anthracene (2-3)* 2.7E-01 ug/L 1.3E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.8E-07
Benzo(a)pyrene (0-2)* 6.6E-01 ug/L 1.1E-06 mg/kg-day 7.3E+01 1/(mg/kg-day) 7.8E-05 3.7E-05 mg/kg-day NA NA
Benzo(a)pyrene (2-3)* 6.6E-01 ug/L 5.3E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.2E-05
Benzo(b)fluoranthene (0-2)* 3.0E-01 ug/L 4.9E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.6E-06 1.7E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (2-3)* 3.0E-01 ug/L 2.5E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 5.4E-07
Bis(2-ethylhexyl) phthalate 2.5E+00 ug/L 4.2E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 5.9E-09 9.9E-06 mg/kg-day 2.0E-02 mg/kg-day 4.9E-04
Indeno(1,2,3-c,d)pyrene (0-2)* 1.3E-01 ug/L 2.2E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.6E-06 7.6E-06 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-3)* 1.3E-01 ug/L 1.1E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.4E-07
Arsenic 2.0E+01 ug/L 1.7E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.6E-08 4.1E-07 mg/kg-day 3.0E-04 mg/kg-day 1.4E-03
Chromium (0-2)* 1.9E+01 ug/L 2.2E-08 mg/kg-day 2.0E+02 1/(mg/kg-day) 4.4E-06 7.7E-07 mg/kg-day 7.5E-05 mg/kg-day 1.0E-02
Chromium (2-3)* 1.9E+01 ug/L 1.1E-08 mg/kg-day 6.0E+01 1/(mg/kg-day) 6.6E-07
Copper 1.7E+02 ug/L 1.5E-07 mg/kg-day NA NA 3.5E-06 mg/kg-day 4.0E-02 mg/kg-day 8.8E-05
Selenium 4.1E+01 ug/L 3.6E-08 mg/kg-day NA NA 8.4E-07 mg/kg-day 5.0E-03 mg/kg-day 1.7E-04
Exp. Route Total 1.0E-04 1.3E-02
Exposure Point Total 1.0E-04 1.9E-02
1.0E-04 1.9E-02
Surface Water Total - Dry Event 1.0E-04 1.9E-02
Exposure Medium Total
TABLE 7.3.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Ingestion
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 2.0E-09 mg/kg-day 5.4E-03 1/(mg/kg-day) 1.1E-11 4.6E-08 mg/kg-day 7.0E-02 mg/kg-day 6.5E-07
Benzene 8.4E-01 ug/L 2.8E-09 mg/kg-day 5.5E-02 1/(mg/kg-day) 1.5E-10 6.4E-08 mg/kg-day 4.0E-03 mg/kg-day 1.6E-05
Chloroform 5.6E-01 ug/L 1.8E-09 mg/kg-day 3.1E-02 1/(mg/kg-day) 5.7E-11 4.3E-08 mg/kg-day 1.0E-02 mg/kg-day 4.3E-06
Ethylbenzene 8.7E-01 ug/L 2.9E-09 mg/kg-day 1.1E-02 1/(mg/kg-day) 3.2E-11 6.7E-08 mg/kg-day 1.0E-01 mg/kg-day 6.7E-07
Tetrachloroethylene(PCE) 2.4E+01 ug/L 8.1E-08 mg/kg-day 5.4E-01 1/(mg/kg-day) 4.4E-08 1.9E-06 mg/kg-day 1.0E-02 mg/kg-day 1.9E-04
Benzo(a)anthracene (0-2)* 1.0E-01 ug/L 2.3E-10 mg/kg-day 7.3E+00 1/(mg/kg-day) 1.7E-09 8.0E-09 mg/kg-day NA NA
Benzo(a)anthracene (2-3)* 1.0E-01 ug/L 1.1E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.5E-10
Benzo(a)pyrene (0-2)* 2.1E-01 ug/L 4.5E-10 mg/kg-day 7.3E+01 1/(mg/kg-day) 3.3E-08 1.6E-08 mg/kg-day NA NA
Benzo(a)pyrene (2-3)* 2.1E-01 ug/L 2.3E-10 mg/kg-day 2.2E+01 1/(mg/kg-day) 4.9E-09
Benzo(b)fluoranthene (0-2)* 1.9E-01 ug/L 4.2E-10 mg/kg-day 7.3E+00 1/(mg/kg-day) 3.0E-09 1.5E-08 mg/kg-day NA NA
Benzo(b)fluoranthene (2-3)* 1.9E-01 ug/L 2.1E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 4.6E-10
Dibenz(a,h)anthracene (0-2)* 1.0E-01 ug/L 2.2E-10 mg/kg-day 7.3E+01 1/(mg/kg-day) 1.6E-08 7.8E-09 mg/kg-day NA NA
Dibenz(a,h)anthracene (0-2)* 1.0E-01 ug/L 1.1E-10 mg/kg-day 2.2E+01 1/(mg/kg-day) 2.4E-09
Indeno(1,2,3-c,d)pyrene (0-2)* 5.0E-01 ug/L 1.1E-09 mg/kg-day 7.3E+00 1/(mg/kg-day) 8.0E-09 3.9E-08 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-3)* 5.0E-01 ug/L 5.5E-10 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.2E-09
Naphthalene 3.6E-01 ug/L 1.2E-09 mg/kg-day NA NA 2.8E-08 mg/kg-day 2.0E-02 mg/kg-day 1.4E-06
Arsenic 1.7E+01 ug/L 5.5E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 8.2E-08 1.3E-06 mg/kg-day 3.0E-04 mg/kg-day 4.3E-03
Chromium (0-2)* 8.5E+00 ug/L 1.9E-08 mg/kg-day 5.0E+00 1/(mg/kg-day) 9.4E-08 6.6E-07 mg/kg-day 3.0E-03 mg/kg-day 2.2E-04
Chromium (2-3)* 8.5E+00 ug/L 9.4E-09 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.4E-08
Cobalt 3.9E+00 ug/L 1.3E-08 mg/kg-day NA NA 3.0E-07 mg/kg-day 3.0E-04 mg/kg-day 1.0E-03
Lead 1.5E+01 ug/L 4.9E-08 mg/kg-day NA NA 1.1E-06 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 1.1E-07 mg/kg-day NA NA 2.6E-06 mg/kg-day 5.0E-03 mg/kg-day 5.2E-04
Exp. Route Total 3.1E-07 6.2E-03
TABLE 7.3.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water Surface Water Gowanus Canal Dermal
(Wet event) 1,4-dichlorobenzene 5.9E-01 ug/L 4.4E-08 mg/kg-day 5.4E-03 1/(mg/kg-day) 2.4E-10 1.0E-06 mg/kg-day 7.0E-02 mg/kg-day 1.5E-05
Benzene 8.4E-01 ug/L 1.6E-08 mg/kg-day 5.5E-02 1/(mg/kg-day) 8.5E-10 3.6E-07 mg/kg-day 4.0E-03 mg/kg-day 9.1E-05
Chloroform 5.6E-01 ug/L 5.9E-09 mg/kg-day 3.1E-02 1/(mg/kg-day) 1.8E-10 1.4E-07 mg/kg-day 1.0E-02 mg/kg-day 1.4E-05
Ethylbenzene 8.7E-01 ug/L 6.0E-08 mg/kg-day 1.1E-02 1/(mg/kg-day) 6.6E-10 1.4E-06 mg/kg-day 1.0E-01 mg/kg-day 1.4E-05
Tetrachloroethylene(PCE) 2.4E+01 ug/L 1.6E-06 mg/kg-day 5.4E-01 1/(mg/kg-day) 8.8E-07 3.8E-05 mg/kg-day 1.0E-02 mg/kg-day 3.8E-03
Benzo(a)anthracene (0-2)* 1.0E-01 ug/L 9.8E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 7.2E-07 3.4E-06 mg/kg-day NA NA
Benzo(a)anthracene (2-3)* 1.0E-01 ug/L 1.7E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 3.6E-07
Benzo(a)pyrene (0-2)* 2.1E-01 ug/L 3.3E-07 mg/kg-day 7.3E+01 1/(mg/kg-day) 2.4E-05 1.2E-05 mg/kg-day NA NA
Benzo(a)pyrene (2-3)* 2.1E-01 ug/L 1.6E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 3.4E-06
Benzo(b)fluoranthene (0-2)* 1.9E-01 ug/L 3.1E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.3E-06 1.1E-05 mg/kg-day NA NA
Benzo(b)fluoranthene (2-3)* 1.9E-01 ug/L 1.3E-07 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.8E-07
Dibenz(a,h)anthracene (0-2)* 1.0E-01 ug/L 2.5E-07 mg/kg-day 7.3E+01 1/(mg/kg-day) 1.8E-05 8.8E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (0-2)* 1.0E-01 ug/L 4.1E-07 mg/kg-day 2.2E+01 1/(mg/kg-day) 9.0E-06
Indeno(1,2,3-c,d)pyrene (0-2)* 5.0E-01 ug/L 8.2E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 6.0E-06 2.9E-05 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene (2-3)* 5.0E-01 ug/L 9.0E-09 mg/kg-day 2.2E+00 1/(mg/kg-day) 2.0E-08
Naphthalene 3.6E-01 ug/L 2.7E-08 mg/kg-day NA NA 6.3E-07 mg/kg-day 2.0E-02 mg/kg-day 3.2E-05
Arsenic 1.7E+01 ug/L 1.4E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 2.2E-08 3.4E-07 mg/kg-day 3.0E-04 mg/kg-day 1.1E-03
Chromium (0-2)* 8.5E+00 ug/L 9.9E-09 mg/kg-day 2.0E+02 1/(mg/kg-day) 2.0E-06 3.5E-07 mg/kg-day 7.5E-05 mg/kg-day 4.6E-03
Chromium (2-3)* 8.5E+00 ug/L 4.5E-10 mg/kg-day 6.0E+01 1/(mg/kg-day) 2.7E-08
Cobalt 3.9E+00 ug/L 1.4E-09 mg/kg-day NA NA 3.2E-08 mg/kg-day 3.0E-04 mg/kg-day 1.1E-04
Lead 1.5E+01 ug/L 1.3E-09 mg/kg-day NA NA 3.0E-08 mg/kg-day NA NA
Selenium 3.4E+01 ug/L 2.9E-08 mg/kg-day NA NA 6.8E-07 mg/kg-day 5.0E-03 mg/kg-day 1.4E-04
Exp. Route Total 6.8E-05 1.0E-02
Exposure Point Total 6.8E-05 1.6E-02
6.8E-05 1.6E-02
Surface Water Total - Wet Event 6.8E-05 1.6E-02
Total Total of Receptor Risks Across All Media 2.1E-04 Total of Receptor Hazards Across All Media 1.7E-01
Notes-
NA = Not available / Not applicable.
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used to adjust CSF for 0-2 year old for exposure duration of 2 years, ADAF of 3 used to adjust CSF for 2-3 year old for exposure duration of 1 year, for a total CTE exposure duration of 3 years.
Non-cancer calculations shown under 0-2 year old only, as non-cancer calculations are not adjusted for MMOA.
DAevent for surface water from dry event calculated on Table 7.1.CTE Supplement A.
DAevent for surface water from wet event calculated on Table 7.1.CTE Supplement B.
Total includes sum of exposed and near shore sediment, and maximum of dry event and wet event surface water
Exposure Medium Total
TABLE 7.4.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Cancer Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Air AirAmbient air at street
levelInhalation
(pre-aeration system Benzene 1.3E-03 mg/m37.8E-06 1/(ug/m3) 8.1E-04 mg/m3
3.0E-02 mg/m32.7E-02
operation) Chloroform 2.5E-04 mg/m32.3E-05 1/(ug/m3) 1.6E-04 mg/m3
9.8E-02 mg/m31.6E-03
Ethylbenzene 1.1E-03 mg/m32.5E-06 1/(ug/m3) 7.0E-04 mg/m3
1.0E+00 mg/m37.0E-04
Naphthalene 1.3E-03 mg/m33.4E-05 1/(ug/m3) 8.3E-04 mg/m3
3.0E-03 mg/m32.8E-01
Exp. Route Total 0.0E+00 3.1E-01
Exposure Point Total 0.0E+00 3.1E-01
0.0E+00 3.1E-01
Ambient air at street level Total - Pre-aeration system operation 0.0E+00 3.1E-01
Air AirAmbient air at street
levelInhalation
(after aeration system Benzene 1.1E-03 mg/m37.8E-06 1/(ug/m3) 7.1E-04 mg/m3 3.0E-02 mg/m3
2.4E-02
started) Chloroform 3.3E-04 mg/m32.3E-05 1/(ug/m3) 2.1E-04 mg/m3 9.8E-02 mg/m3
2.2E-03
Ethylbenzene 1.2E-03 mg/m32.5E-06 1/(ug/m3) 7.9E-04 mg/m3 1.0E+00 mg/m3
7.9E-04
Naphthalene 3.0E-03 mg/m33.4E-05 1/(ug/m3) 1.9E-03 mg/m3 3.0E-03 mg/m3
6.5E-01
Exp. Route Total 0.0E+00 6.7E-01
Exposure Point Total 0.0E+00 6.7E-01
0.0E+00 6.7E-01
Ambient air at street level Total - After aeration system turned on 0.0E+00 6.7E-01
Exposure Medium Total
Exposure Medium Total
TABLE 7.4.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Cancer Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow
Ingestion
2-methylnaphthalene 3.6E+02 mg/kg NA 1/(mg/kg-day) 3.2E-06 mg/kg-day 4.0E-03 mg/kg-day 7.9E-04
Acenaphthene 3.1E+02 mg/kg NA 2.7E-06 mg/kg-day 6.0E-02 mg/kg-day 4.5E-05
Benzo(a)anthracene 1.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 1.1E-06 mg/kg-day NA NA
Benzo(a)pyrene 7.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 6.4E-07 mg/kg-day NA NA
Benzo(b)fluoranthene 7.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 7.0E-07 mg/kg-day NA NA
Benzo(k)fluoranthene 4.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 3.6E-07 mg/kg-day NA NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.4E-02 1/(mg/kg-day) 1.3E-07 mg/kg-day 2.0E-02 mg/kg-day 6.4E-06
Chrysene 1.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 1.1E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 5.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 4.8E-08 mg/kg-day NA NA
Fluoranthene 1.8E+02 mg/kg NA 1.6E-06 mg/kg-day 4.0E-02 mg/kg-day 4.0E-05
Fluorene 2.3E+02 mg/kg NA 2.0E-06 mg/kg-day 4.0E-02 mg/kg-day 5.1E-05
Indeno(1,2,3-c,d)pyrene 3.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 2.8E-07 mg/kg-day NA NA
Naphthalene 6.6E+02 mg/kg NA 5.8E-06 mg/kg-day 2.0E-02 mg/kg-day 2.9E-04
Pyrene 3.9E+02 mg/kg NA 3.4E-06 mg/kg-day 3.0E-02 mg/kg-day 1.1E-04
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 1.6E+05 1/(mg/kg-day) 4.0E-13 mg/kg-day NA NA
Nondioxin-Like PCB 6.4E+00 mg/kg 1.0E+00 1/(mg/kg-day) 5.7E-08 mg/kg-day NA NA
Total PCB 6.6E+00 mg/kg NA 5.8E-08 mg/kg-day 2.0E-05 mg/kg-day 2.9E-03
Aluminum 1.5E+04 mg/kg NA 1.3E-04 mg/kg-day 1.0E+00 mg/kg-day 1.3E-04
Arsenic 1.5E+01 mg/kg 1.5E+00 1/(mg/kg-day) 1.3E-07 mg/kg-day 3.0E-04 mg/kg-day 4.3E-04
Cadmium 1.0E+01 mg/kg NA 8.8E-08 mg/kg-day 1.0E-03 mg/kg-day 8.8E-05
Chromium 8.5E+01 mg/kg 5.0E-01 7.4E-07 mg/kg-day 3.0E-03 mg/kg-day 2.5E-04
Cobalt 1.1E+01 mg/kg NA 9.7E-08 mg/kg-day 3.0E-04 mg/kg-day 3.2E-04
Copper 2.7E+02 mg/kg NA 2.4E-06 mg/kg-day 4.0E-02 mg/kg-day 6.0E-05
Iron 3.4E+04 mg/kg NA 3.0E-04 mg/kg-day 7.0E-01 mg/kg-day 4.2E-04
Lead 1.2E+03 mg/kg NA 1.1E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg NA 2.7E-06 mg/kg-day 1.4E-01 mg/kg-day 1.9E-05
Vanadium 4.6E+01 mg/kg NA 4.0E-07 mg/kg-day 5.0E-03 mg/kg-day 8.1E-05
Exp. Route Total 0.0E+00 6.1E-03
TABLE 7.4.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Cancer Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow
Dermal
2-methylnaphthalene 3.6E+02 mg/kg NA 9.3E-06 mg/kg-day 4.0E-03 mg/kg-day 2.3E-03
Acenaphthene 3.1E+02 mg/kg NA 8.1E-06 mg/kg-day 6.0E-02 mg/kg-day 1.3E-04
Benzo(a)anthracene 1.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 3.3E-06 mg/kg-day NA NA
Benzo(a)pyrene 7.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 1.9E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 7.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 2.1E-06 mg/kg-day NA NA
Benzo(k)fluoranthene 4.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 1.1E-06 mg/kg-day NA NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.4E-02 1/(mg/kg-day) 2.9E-07 mg/kg-day 2.0E-02 mg/kg-day 1.5E-05
Chrysene 1.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 3.3E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 5.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 1.4E-07 mg/kg-day NA NA
Fluoranthene 1.8E+02 mg/kg NA 4.7E-06 mg/kg-day 4.0E-02 mg/kg-day 1.2E-04
Fluorene 2.3E+02 mg/kg NA 6.0E-06 mg/kg-day 4.0E-02 mg/kg-day 1.5E-04
Indeno(1,2,3-c,d)pyrene 3.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 8.2E-07 mg/kg-day NA NA
Naphthalene 6.6E+02 mg/kg NA 1.7E-05 mg/kg-day 2.0E-02 mg/kg-day 8.5E-04
Pyrene 3.9E+02 mg/kg NA 1.0E-05 mg/kg-day 3.0E-02 mg/kg-day 3.4E-04
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 1.6E+05 1/(mg/kg-day) 1.3E-12 mg/kg-day NA NA
Nondioxin-Like PCB 6.4E+00 mg/kg 1.0E+00 1/(mg/kg-day) 1.8E-07 mg/kg-day NA NA
Total PCB 6.6E+00 mg/kg NA 1.9E-07 mg/kg-day 2.0E-05 mg/kg-day 9.3E-03
Aluminum 1.5E+04 mg/kg NA 2.9E-05 mg/kg-day 1.0E+00 mg/kg-day 2.9E-05
Arsenic 1.5E+01 mg/kg 1.5E+00 1/(mg/kg-day) 8.9E-08 mg/kg-day 3.0E-04 mg/kg-day 3.0E-04
Cadmium 1.0E+01 mg/kg NA 2.0E-09 mg/kg-day 2.5E-05 mg/kg-day 8.0E-05
Chromium 8.5E+01 mg/kg 2.0E+01 0.0E+00 1.7E-07 mg/kg-day 7.5E-05 mg/kg-day 2.3E-03
Cobalt 1.1E+01 mg/kg NA 2.2E-08 mg/kg-day 3.0E-04 mg/kg-day 7.4E-05
Copper 2.7E+02 mg/kg NA 5.5E-07 mg/kg-day 4.0E-02 mg/kg-day 1.4E-05
Iron 3.4E+04 mg/kg NA 6.7E-05 mg/kg-day 7.0E-01 mg/kg-day 9.6E-05
Lead 1.2E+03 mg/kg NA 2.4E-06 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg NA 6.1E-07 mg/kg-day 7.0E-01 mg/kg-day 8.8E-07
Vanadium 4.6E+01 mg/kg NA 9.2E-08 mg/kg-day 5.0E-03 mg/kg-day 1.8E-05
Exp. Route Total 0.0E+00 1.6E-02
Exposure Point Total 0.0E+00 2.2E-02
0.0E+00 2.2E-02
Overflow Surface Sediment Total 0.0E+00 2.2E-02
Exposure Medium Total
TABLE 7.4.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Cancer Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
Water
Canal Overflow -
Surface Water Ingestion
1,4-dichlorobenzene 5.9E-01 ug/L 5.4E-03 1/(mg/kg-day) 3.4E-09 mg/kg-day 7.0E-02 mg/kg-day 4.8E-08
Benzene 8.4E-01 ug/L 5.5E-02 1/(mg/kg-day) 4.8E-09 mg/kg-day 4.0E-03 mg/kg-day 1.2E-06
Chloroform 5.6E-01 ug/L 3.1E-02 1/(mg/kg-day) 3.2E-09 mg/kg-day 1.0E-02 mg/kg-day 3.2E-07
Ethylbenzene 8.7E-01 ug/L 1.1E-02 1/(mg/kg-day) 5.0E-09 mg/kg-day 1.0E-01 mg/kg-day 5.0E-08
Tetrachloroethylene(PCE) 2.4E+01 ug/L 5.4E-01 1/(mg/kg-day) 1.4E-07 mg/kg-day 1.0E-02 mg/kg-day 1.4E-05
Benzo(a)anthracene 1.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 6.0E-10 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 1.2E-09 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 1.1E-09 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 5.8E-10 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 2.9E-09 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L NA 2.1E-09 mg/kg-day 2.0E-02 mg/kg-day 1.0E-07
Arsenic 1.7E+01 ug/L 1.5E+00 1/(mg/kg-day) 9.5E-08 mg/kg-day 3.0E-04 mg/kg-day 3.2E-04
Chromium 8.5E+00 ug/L 5.0E-01 1/(mg/kg-day) 4.9E-08 mg/kg-day 3.0E-03 mg/kg-day 1.6E-05
Cobalt 3.9E+00 ug/L NA 2.2E-08 mg/kg-day 3.0E-04 mg/kg-day 7.4E-05
Lead 1.5E+01 ug/L NA 8.5E-08 mg/kg-day NA NA
Selenium 3.4E+01 ug/L NA 1.9E-07 mg/kg-day 5.0E-03 mg/kg-day 3.8E-05
Exp. Route Total 0.0E+00 4.6E-04
TABLE 7.4.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Cancer Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
Water
Canal Overflow -
Surface Water Dermal
1,4-dichlorobenzene 5.9E-01 ug/L 5.4E-03 1/(mg/kg-day) 6.6E-08 mg/kg-day 7.0E-02 mg/kg-day 9.4E-07
Benzene 8.4E-01 ug/L 5.5E-02 1/(mg/kg-day) 2.3E-08 mg/kg-day 4.0E-03 mg/kg-day 5.8E-06
Chloroform 5.6E-01 ug/L 3.1E-02 1/(mg/kg-day) 8.7E-09 mg/kg-day 1.0E-02 mg/kg-day 8.7E-07
Ethylbenzene 8.7E-01 ug/L 1.1E-02 1/(mg/kg-day) 8.9E-08 mg/kg-day 1.0E-01 mg/kg-day 8.9E-07
Tetrachloroethylene(PCE) 2.4E+01 ug/L 5.4E-01 1/(mg/kg-day) 2.4E-06 mg/kg-day 1.0E-02 mg/kg-day 2.4E-04
Benzo(a)anthracene 1.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 2.2E-07 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 7.4E-07 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 7.0E-07 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 5.7E-07 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 1.8E-06 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L NA 4.1E-08 mg/kg-day 2.0E-02 mg/kg-day 2.0E-06
Arsenic 1.7E+01 ug/L 1.5E+00 1/(mg/kg-day) 2.2E-08 mg/kg-day 3.0E-04 mg/kg-day 7.2E-05
Chromium 8.5E+00 ug/L 2.0E+01 1/(mg/kg-day) 2.2E-08 mg/kg-day 7.5E-05 mg/kg-day 3.0E-04
Cobalt 3.9E+00 ug/L NA 2.0E-09 mg/kg-day 3.0E-04 mg/kg-day 6.8E-06
Lead 1.5E+01 ug/L NA 1.9E-09 mg/kg-day NA NA
Selenium 3.4E+01 ug/L NA 4.4E-08 mg/kg-day 5.0E-03 mg/kg-day 8.8E-06
Exp. Route Total 0.0E+00 6.4E-04
Exposure Point Total 0.0E+00 1.1E-03
0.0E+00 1.1E-03
Overflow Surface Water Total 0.0E+00 1.1E-03
Total Total of Receptor Risks Across All Media 0.0E+00 Total of Receptor Hazards Across All Media 7.0E-01
Notes-
NA = Not available / Not applicable.
DAevent for surface water calculated on Table 7.4.CTE Supplement A.
Total includes maximum between air prior to and after aeration system operations, and surface water, and sediment.
Exposure Medium Total
TABLE 7.4.CTE Supplement A
Calculation of Daevent Wet Event
Residential Scenario
Gowanus Canal Remedial Investigation, Brooklyn, New York
Chemical Water Permeability Lag Fraction Duration
of Potential Concentration Coefficient Time Absorbed Water of Event
Concern (CW) (Kp) B (τevent) t* (FA) (tevent) DAevent
(µg/L) (cm/hr) (dimensionless) (hr) (hr) (dimensionless) (hr) (mg/cm2-event) Eq
1,4-dichlorobenzene 5.9E-01 4.2E-02 2.0E-01 7.1E-01 1.7E+00 1.0E+00 1.3 6.6E-08 2
Benzene 8.4E-01 1.5E-02 5.1E-02 2.9E-01 7.0E-01 1.0E+00 1.3 2.3E-08 3
Chloroform 5.6E-01 6.8E-03 2.9E-02 5.0E-01 1.2E+00 1.0E+00 1.3 8.7E-09 3
Ethylbenzene 8.7E-01 4.9E-02 2.0E-01 4.2E-01 1.0E+00 1.0E+00 1.3 8.9E-08 3
Tetrachloroethylene(PCE) 2.4E+01 3.3E-02 1.7E-01 9.1E-01 2.2E+00 1.0E+00 1.3 2.4E-06 2
Benzo(a)anthracene 1.0E-01 4.7E-01 2.8E+00 2.0E+00 8.5E+00 1.0E+00 1.3 2.2E-07 2
Benzo(a)pyrene 2.1E-01 7.0E-01 4.3E+00 2.7E+00 1.2E+01 1.0E+00 1.3 7.4E-07 2
Benzo(b)fluoranthene 1.9E-01 7.0E-01 4.3E+00 2.8E+00 1.2E+01 1.0E+00 1.3 6.9E-07 2
Dibenz(a,h)anthracene 1.0E-01 1.5E+00 9.7E+00 3.9E+00 1.8E+01 6.0E-01 1.3 5.6E-07 2
Indeno(1,2,3-c,d)pyrene 5.0E-01 1.0E+00 6.7E+00 3.8E+00 1.7E+01 6.0E-01 1.3 1.8E-06 2
Naphthalene 3.6E-01 4.7E-02 2.0E-01 5.6E-01 1.3E+00 1.0E+00 1.3 4.0E-08 2
Arsenic 1.7E+01 1.0E-03 NA NA NA NA 1.3 2.2E-08 1
Chromium 8.5E+00 2.0E-03 NA NA NA NA 1.3 2.2E-08 1
Cobalt 3.9E+00 4.0E-04 NA NA NA NA 1.3 2.0E-09 1
Lead 1.5E+01 1.0E-04 NA NA NA NA 1.3 1.9E-09 1
Selenium 3.4E+01 1.0E-03 NA NA NA NA 1.3 4.4E-08 1
Organics: DAevent (mg/cm2-event) =
If tevent<t*, then DAevent =
2 x FA x Kp x CW x (sqrt((6 x τevent x tevent)/π)) x 0.001 mg/µg x 0.001 l/cm3 (eq 2)
If tevent>t*, then DAevent =
FA x Kp x CW x ( tevent/(1+B) + 2 x τevent x ((1 + 3xB + 3xB2)/(1+B)2) x 0.001 mg/µg x 0.001 l/cm3 (eq 3)
Notes:
NA - Not applicable
Permeability constants and other input parameter values from EPA 2004, Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual (Part E,
Supplemental Guidance for Dermal Risk Assessment - Final). EPA/540/R/99/005. The default value of 0.001 was assigned to inorganics not listed in this document.
B - Dimensionless ratio of the permeability coefficient of a compound through the stratum corneum relative to its permeability
coefficient across the viable epidermis (dimensionless).
t* - Time to reach steady-state
TABLE 7.5.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Air AirAmbient air at street
levelInhalation
(pre-aeration system Benzene 1.3E-03 mg/m37.8E-06 1/(ug/m3) 8.1E-04 mg/m3
3.0E-02 mg/m32.7E-02
operation) Chloroform 2.5E-04 mg/m32.3E-05 1/(ug/m3) 1.6E-04 mg/m3
9.8E-02 mg/m31.6E-03
Ethylbenzene 1.1E-03 mg/m32.5E-06 1/(ug/m3) 7.0E-04 mg/m3
1.0E+00 mg/m37.0E-04
Naphthalene 1.3E-03 mg/m33.4E-05 1/(ug/m3) 8.3E-04 mg/m3
3.0E-03 mg/m32.8E-01
Exp. Route Total 3.1E-01
Exposure Point Total 3.1E-01
3.1E-01
Ambient air at street level Total - Pre-aeration system operation 3.1E-01
Air AirAmbient air at street
levelInhalation
(after aeration system Benzene 1.1E-03 mg/m3 7.8E-06 1/(ug/m3) 7.1E-04 mg/m3 3.0E-02 mg/m32.4E-02
started) Chloroform 3.3E-04 mg/m3 2.3E-05 1/(ug/m3) 2.1E-04 mg/m3 9.8E-02 mg/m32.2E-03
Ethylbenzene 1.2E-03 mg/m3 2.5E-06 1/(ug/m3) 7.9E-04 mg/m3 1.0E+00 mg/m37.9E-04
Naphthalene 3.0E-03 mg/m3 3.4E-05 1/(ug/m3) 1.9E-03 mg/m3 3.0E-03 mg/m36.5E-01
Exp. Route Total 6.7E-01
Exposure Point Total 6.7E-01
6.7E-01
Ambient air at street level Total - After aeration system turned on 6.7E-01
Exposure Medium Total
Exposure Medium Total
TABLE 7.5.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow
Ingestion
2-methylnaphthalene 3.6E+02 mg/kg NA 1/(mg/kg-day) 2.9E-05 mg/kg-day 4.0E-03 mg/kg-day 7.4E-03
Acenaphthene 3.1E+02 mg/kg NA 2.5E-05 mg/kg-day 6.0E-02 mg/kg-day 4.2E-04
Benzo(a)anthracene 1.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 1.1E-05 mg/kg-day NA NA
Benzo(a)pyrene 7.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 6.0E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 7.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 6.5E-06 mg/kg-day NA NA
Benzo(k)fluoranthene 4.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 3.4E-06 mg/kg-day NA NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.4E-02 1/(mg/kg-day) 1.2E-06 mg/kg-day 2.0E-02 mg/kg-day 6.0E-05
Chrysene 1.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 1.0E-05 mg/kg-day NA NA
Dibenz(a,h)anthracene 5.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 4.5E-07 mg/kg-day NA NA
Fluoranthene 1.8E+02 mg/kg NA 1.5E-05 mg/kg-day 4.0E-02 mg/kg-day 3.7E-04
Fluorene 2.3E+02 mg/kg NA 1.9E-05 mg/kg-day 4.0E-02 mg/kg-day 4.7E-04
Indeno(1,2,3-c,d)pyrene 3.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 2.6E-06 mg/kg-day NA NA
Naphthalene 6.6E+02 mg/kg NA 5.4E-05 mg/kg-day 2.0E-02 mg/kg-day 2.7E-03
Pyrene 3.9E+02 mg/kg NA 3.2E-05 mg/kg-day 3.0E-02 mg/kg-day 1.1E-03
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 1.6E+05 1/(mg/kg-day) 3.7E-12 mg/kg-day NA NA
Nondioxin-Like PCB 6.4E+00 mg/kg 1.0E+00 1/(mg/kg-day) 5.3E-07 mg/kg-day NA NA
Total PCB 6.6E+00 mg/kg NA 5.4E-07 mg/kg-day 2.0E-05 mg/kg-day 2.7E-02
Aluminum 1.5E+04 mg/kg NA 1.2E-03 mg/kg-day 1.0E+00 mg/kg-day 1.2E-03
Arsenic 1.5E+01 mg/kg 1.5E+00 1/(mg/kg-day) 1.2E-06 mg/kg-day 3.0E-04 mg/kg-day 4.0E-03
Cadmium 1.0E+01 mg/kg NA 8.2E-07 mg/kg-day 1.0E-03 mg/kg-day 8.2E-04
Chromium 8.5E+01 mg/kg 5.0E-01 6.9E-06 mg/kg-day 3.0E-03 mg/kg-day 2.3E-03
Cobalt 1.1E+01 mg/kg NA 9.0E-07 mg/kg-day 3.0E-04 mg/kg-day 3.0E-03
Copper 2.7E+02 mg/kg NA 2.3E-05 mg/kg-day 4.0E-02 mg/kg-day 5.6E-04
Iron 3.4E+04 mg/kg NA 2.8E-03 mg/kg-day 7.0E-01 mg/kg-day 3.9E-03
Lead 1.2E+03 mg/kg NA 9.9E-05 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg NA 2.5E-05 mg/kg-day 1.4E-01 mg/kg-day 1.8E-04
Vanadium 4.6E+01 mg/kg NA 3.8E-06 mg/kg-day 5.0E-03 mg/kg-day 7.5E-04
Exp. Route Total 5.7E-02
TABLE 7.5.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow
Dermal
2-methylnaphthalene 3.6E+02 mg/kg NA 2.1E-05 mg/kg-day 4.0E-03 mg/kg-day 5.4E-03
Acenaphthene 3.1E+02 mg/kg NA 1.8E-05 mg/kg-day 6.0E-02 mg/kg-day 3.1E-04
Benzo(a)anthracene 1.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 7.7E-06 mg/kg-day NA NA
Benzo(a)pyrene 7.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 4.4E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 7.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 4.7E-06 mg/kg-day NA NA
Benzo(k)fluoranthene 4.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 2.5E-06 mg/kg-day NA NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.4E-02 1/(mg/kg-day) 6.7E-07 mg/kg-day 2.0E-02 mg/kg-day 3.3E-05
Chrysene 1.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 7.6E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 5.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 3.3E-07 mg/kg-day NA NA
Fluoranthene 1.8E+02 mg/kg NA 1.1E-05 mg/kg-day 4.0E-02 mg/kg-day 2.7E-04
Fluorene 2.3E+02 mg/kg NA 1.4E-05 mg/kg-day 4.0E-02 mg/kg-day 3.5E-04
Indeno(1,2,3-c,d)pyrene 3.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 1.9E-06 mg/kg-day NA NA
Naphthalene 6.6E+02 mg/kg NA 3.9E-05 mg/kg-day 2.0E-02 mg/kg-day 2.0E-03
Pyrene 3.9E+02 mg/kg NA 2.3E-05 mg/kg-day 3.0E-02 mg/kg-day 7.7E-04
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 1.6E+05 1/(mg/kg-day) 2.9E-12 mg/kg-day NA NA
Nondioxin-Like PCB 6.4E+00 mg/kg 1.0E+00 1/(mg/kg-day) 4.1E-07 mg/kg-day NA NA
Total PCB 6.6E+00 mg/kg NA 4.3E-07 mg/kg-day 2.0E-05 mg/kg-day 2.1E-02
Aluminum 1.5E+04 mg/kg NA 6.7E-05 mg/kg-day 1.0E+00 mg/kg-day 6.7E-05
Arsenic 1.5E+01 mg/kg 1.5E+00 1/(mg/kg-day) 2.0E-07 mg/kg-day 3.0E-04 mg/kg-day 6.8E-04
Cadmium 1.0E+01 mg/kg NA 4.6E-09 mg/kg-day 2.5E-05 mg/kg-day 1.8E-04
Chromium 8.5E+01 mg/kg 2.0E+01 0.0E+00 3.9E-07 mg/kg-day 7.5E-05 mg/kg-day 5.2E-03
Cobalt 1.1E+01 mg/kg NA 5.1E-08 mg/kg-day 3.0E-04 mg/kg-day 1.7E-04
Copper 2.7E+02 mg/kg NA 1.3E-06 mg/kg-day 4.0E-02 mg/kg-day 3.2E-05
Iron 3.4E+04 mg/kg NA 1.5E-04 mg/kg-day 7.0E-01 mg/kg-day 2.2E-04
Lead 1.2E+03 mg/kg NA 5.5E-06 mg/kg-day NA NA
Manganese 3.1E+02 mg/kg NA 1.4E-06 mg/kg-day 7.0E-01 mg/kg-day 2.0E-06
Vanadium 4.6E+01 mg/kg NA 2.1E-07 mg/kg-day 5.0E-03 mg/kg-day 4.2E-05
Exp. Route Total 3.7E-02
Exposure Point Total 9.3E-02
9.3E-02
Overflow Surface Sediment Total 9.3E-02
Exposure Medium Total
TABLE 7.5.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
Water
Canal Overflow -
Surface Water Ingestion
1,4-dichlorobenzene 5.9E-01 ug/L 5.4E-03 1/(mg/kg-day) 1.6E-08 mg/kg-day 7.0E-02 mg/kg-day 2.3E-07
Benzene 8.4E-01 ug/L 5.5E-02 1/(mg/kg-day) 2.2E-08 mg/kg-day 4.0E-03 mg/kg-day 5.6E-06
Chloroform 5.6E-01 ug/L 3.1E-02 1/(mg/kg-day) 1.5E-08 mg/kg-day 1.0E-02 mg/kg-day 1.5E-06
Ethylbenzene 8.7E-01 ug/L 1.1E-02 1/(mg/kg-day) 2.3E-08 mg/kg-day 1.0E-01 mg/kg-day 2.3E-07
Tetrachloroethylene(PCE) 2.4E+01 ug/L 5.4E-01 1/(mg/kg-day) 6.5E-07 mg/kg-day 1.0E-02 mg/kg-day 6.5E-05
Benzo(a)anthracene 1.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 2.8E-09 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 5.5E-09 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 5.0E-09 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 2.7E-09 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 1.3E-08 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L NA 9.7E-09 mg/kg-day 2.0E-02 mg/kg-day 4.9E-07
Arsenic 1.7E+01 ug/L 1.5E+00 1/(mg/kg-day) 4.4E-07 mg/kg-day 3.0E-04 mg/kg-day 1.5E-03
Chromium 8.5E+00 ug/L 5.0E-01 1/(mg/kg-day) 2.3E-07 mg/kg-day 3.0E-03 mg/kg-day 7.6E-05
Cobalt 3.9E+00 ug/L NA 1.0E-07 mg/kg-day 3.0E-04 mg/kg-day 3.5E-04
Lead 1.5E+01 ug/L NA 4.0E-07 mg/kg-day NA NA
Selenium 3.4E+01 ug/L NA 9.0E-07 mg/kg-day 5.0E-03 mg/kg-day 1.8E-04
Exp. Route Total 2.2E-03
TABLE 7.5.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
Water
Canal Overflow -
Surface Water Dermal
1,4-dichlorobenzene 5.9E-01 ug/L 5.4E-03 1/(mg/kg-day) 1.5E-07 mg/kg-day 7.0E-02 mg/kg-day 2.2E-06
Benzene 8.4E-01 ug/L 5.5E-02 1/(mg/kg-day) 5.3E-08 mg/kg-day 4.0E-03 mg/kg-day 1.3E-05
Chloroform 5.6E-01 ug/L 3.1E-02 1/(mg/kg-day) 2.0E-08 mg/kg-day 1.0E-02 mg/kg-day 2.0E-06
Ethylbenzene 8.7E-01 ug/L 1.1E-02 1/(mg/kg-day) 2.0E-07 mg/kg-day 1.0E-01 mg/kg-day 2.0E-06
Tetrachloroethylene(PCE) 2.4E+01 ug/L 5.4E-01 1/(mg/kg-day) 5.6E-06 mg/kg-day 1.0E-02 mg/kg-day 5.6E-04
Benzo(a)anthracene 1.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 5.1E-07 mg/kg-day NA NA
Benzo(a)pyrene 2.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 1.7E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 1.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 1.6E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 1.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 1.3E-06 mg/kg-day NA NA
Indeno(1,2,3-c,d)pyrene 5.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 4.2E-06 mg/kg-day NA NA
Naphthalene 3.6E-01 ug/L NA 9.3E-08 mg/kg-day 2.0E-02 mg/kg-day 4.6E-06
Arsenic 1.7E+01 ug/L 1.5E+00 1/(mg/kg-day) 5.0E-08 mg/kg-day 3.0E-04 mg/kg-day 1.7E-04
Chromium 8.5E+00 ug/L 2.0E+01 1/(mg/kg-day) 5.1E-08 mg/kg-day 7.5E-05 mg/kg-day 6.8E-04
Cobalt 3.9E+00 ug/L NA 4.7E-09 mg/kg-day 3.0E-04 mg/kg-day 1.6E-05
Lead 1.5E+01 ug/L NA 4.5E-09 mg/kg-day NA NA
Selenium 3.4E+01 ug/L NA 1.0E-07 mg/kg-day 5.0E-03 mg/kg-day 2.0E-05
Exp. Route Total 1.5E-03
Exposure Point Total 3.6E-03
3.6E-03
Overflow Surface Water Total 3.6E-03
Total Total of Receptor Risks Across All Media Total of Receptor Hazards Across All Media 7.7E-01
Notes-
NA = Not available / Not applicable.
DAevent for surface water calculated on Table 7.4.CTE Supplement A.
Total includes maximum between air prior to and after aeration system operations, and surface water, and sediment.
Exposure Medium Total
TABLE 7.6.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Cancer Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Air AirAmbient air at street
levelInhalation
(pre-aeration system Benzene 1.3E-03 mg/m3 1.0E-01 ug/m3 7.8E-06 1/(ug/m3) 8.1E-07 3.0E-02 mg/m3
operation) Chloroform 2.5E-04 mg/m3 2.0E-02 ug/m3 2.3E-05 1/(ug/m3) 4.6E-07 9.8E-02 mg/m3
Ethylbenzene 1.1E-03 mg/m3 9.0E-02 ug/m3 2.5E-06 1/(ug/m3) 2.2E-07 1.0E+00 mg/m3
Naphthalene 1.3E-03 mg/m3 1.1E-01 ug/m3 3.4E-05 1/(ug/m3) 3.6E-06 3.0E-03 mg/m3
Exp. Route Total 5.1E-06
Exposure Point Total 5.1E-06
5.1E-06
Ambient air at street level Total - Pre-aeration system operation 5.1E-06
Air AirAmbient air at street
levelInhalation
(after aeration system Benzene 1.1E-03 mg/m3 9.1E-02 ug/m3 7.8E-06 1/(ug/m3) 7.1E-07 3.0E-02 mg/m3
started) Chloroform 3.3E-04 mg/m3 2.7E-02 ug/m3 2.3E-05 1/(ug/m3) 6.3E-07 9.8E-02 mg/m3
Ethylbenzene 1.2E-03 mg/m3 1.0E-01 ug/m3 2.5E-06 1/(ug/m3) 2.6E-07 1.0E+00 mg/m3
Naphthalene 3.0E-03 mg/m3 2.5E-01 ug/m3 3.4E-05 1/(ug/m3) 8.5E-06 3.0E-03 mg/m3
Exp. Route Total 1.0E-05
Exposure Point Total 1.0E-05
1.0E-05
Ambient air at street level Total - After aeration system turned on 1.0E-05
Exposure Medium Total
Exposure Medium Total
TABLE 7.6.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Cancer Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow
Ingestion
2-methylnaphthalene 3.6E+02 mg/kg 2.7E-06 mg/kg-day NA 1/(mg/kg-day) NA 4.0E-03 mg/kg-day
Acenaphthene 3.1E+02 mg/kg 2.3E-06 mg/kg-day NA NA 6.0E-02 mg/kg-day
Benzo(a)anthracene11.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 3.5E-06 NA
Benzo(a)pyrene17.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 2.0E-05 NA
Benzo(b)fluoranthene17.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 2.2E-06 NA
Benzo(k)fluoranthene14.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 1.1E-07 NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 1.1E-07 mg/kg-day 1.4E-02 1/(mg/kg-day) 1.5E-09 2.0E-02 mg/kg-day
Chrysene11.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 3.5E-08 NA
Dibenz(a,h)anthracene15.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 1.5E-06 NA
Fluoranthene 1.8E+02 mg/kg 1.3E-06 mg/kg-day NA NA 4.0E-02 mg/kg-day
Fluorene 2.3E+02 mg/kg 1.7E-06 mg/kg-day NA NA 4.0E-02 mg/kg-day
Indeno(1,2,3-c,d)pyrene13.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 8.7E-07 NA
Naphthalene 6.6E+02 mg/kg 4.9E-06 mg/kg-day NA NA 2.0E-02 mg/kg-day
Pyrene 3.9E+02 mg/kg 2.9E-06 mg/kg-day NA NA 3.0E-02 mg/kg-day
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 3.4E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 5.2E-08 NA
Nondioxin-Like PCB 6.4E+00 mg/kg 4.8E-08 mg/kg-day 1.0E+00 1/(mg/kg-day) 4.8E-08 NA
Total PCB 6.6E+00 mg/kg 4.9E-08 mg/kg-day NA NA 2.0E-05 mg/kg-day
Aluminum 1.5E+04 mg/kg 1.1E-04 mg/kg-day NA NA 1.0E+00 mg/kg-day
Arsenic 1.5E+01 mg/kg 1.1E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.6E-07 3.0E-04 mg/kg-day
Cadmium 1.0E+01 mg/kg 7.4E-08 mg/kg-day NA NA 1.0E-03 mg/kg-day
Chromium18.5E+01 mg/kg 5.0E-01 1/(mg/kg-day) 1.6E-08 3.0E-03 mg/kg-day
Cobalt 1.1E+01 mg/kg 8.2E-08 mg/kg-day NA NA 3.0E-04 mg/kg-day
Copper 2.7E+02 mg/kg 2.0E-06 mg/kg-day NA NA 4.0E-02 mg/kg-day
Iron 3.4E+04 mg/kg 2.5E-04 mg/kg-day NA NA 7.0E-01 mg/kg-day
Lead 1.2E+03 mg/kg 8.9E-06 mg/kg-day NA NA NA
Manganese 3.1E+02 mg/kg 2.3E-06 mg/kg-day NA NA 1.4E-01 mg/kg-day
Vanadium 4.6E+01 mg/kg 3.4E-07 mg/kg-day NA NA 5.0E-03 mg/kg-day
Exp. Route Total 2.9E-05
TABLE 7.6.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Cancer Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow
Dermal
2-methylnaphthalene 3.6E+02 mg/kg 3.0E-06 mg/kg-day NA NA 4.0E-03 mg/kg-day
Acenaphthene 3.1E+02 mg/kg 2.6E-06 mg/kg-day NA NA 6.0E-02 mg/kg-day
Benzo(a)anthracene11.3E+02 mg/kg 7.3E-01 1/(mg/kg-day) 2.7E-06 NA
Benzo(a)pyrene17.3E+01 mg/kg 7.3E+00 1/(mg/kg-day) 1.5E-05 NA
Benzo(b)fluoranthene17.9E+01 mg/kg 7.3E-01 1/(mg/kg-day) 1.6E-06 NA
Benzo(k)fluoranthene14.1E+01 mg/kg 7.3E-02 1/(mg/kg-day) 8.5E-08 NA
Bis(2-ethylhexyl)phthalate 1.5E+01 mg/kg 9.5E-08 mg/kg-day 1.4E-02 1/(mg/kg-day) 1.3E-09 2.0E-02 mg/kg-day
Chrysene11.3E+02 mg/kg 7.3E-03 1/(mg/kg-day) 2.6E-08 NA
Dibenz(a,h)anthracene15.5E+00 mg/kg 7.3E+00 1/(mg/kg-day) 1.1E-06 NA
Fluoranthene 1.8E+02 mg/kg 1.5E-06 mg/kg-day NA NA 4.0E-02 mg/kg-day
Fluorene 2.3E+02 mg/kg 2.0E-06 mg/kg-day NA NA 4.0E-02 mg/kg-day
Indeno(1,2,3-c,d)pyrene13.1E+01 mg/kg 7.3E-01 1/(mg/kg-day) 6.5E-07 NA
Naphthalene 6.6E+02 mg/kg 5.6E-06 mg/kg-day NA NA 2.0E-02 mg/kg-day
Pyrene 3.9E+02 mg/kg 3.3E-06 mg/kg-day NA NA 3.0E-02 mg/kg-day
Dioxin-Like PCB TEQ 4.5E-05 mg/kg 4.1E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 6.5E-08 NA
Nondioxin-Like PCB 6.4E+00 mg/kg 5.9E-08 mg/kg-day 1.0E+00 1/(mg/kg-day) 5.9E-08 NA
Total PCB 6.6E+00 mg/kg 6.1E-08 mg/kg-day NA NA 2.0E-05 mg/kg-day
Aluminum 1.5E+04 mg/kg 9.5E-06 mg/kg-day NA NA 1.0E+00 mg/kg-day
Arsenic 1.5E+01 mg/kg 2.9E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.3E-08 3.0E-04 mg/kg-day
Cadmium 1.0E+01 mg/kg 6.5E-10 mg/kg-day NA NA 2.5E-05 mg/kg-day
Chromium18.5E+01 mg/kg 2.0E+01 1/(mg/kg-day) 3.7E-07 7.5E-05 mg/kg-day
Cobalt 1.1E+01 mg/kg 7.2E-09 mg/kg-day NA NA 3.0E-04 mg/kg-day
Copper 2.7E+02 mg/kg 1.8E-07 mg/kg-day NA NA 4.0E-02 mg/kg-day
Iron 3.4E+04 mg/kg 2.2E-05 mg/kg-day NA NA 7.0E-01 mg/kg-day
Lead 1.2E+03 mg/kg 7.8E-07 mg/kg-day NA NA NA
Manganese 3.1E+02 mg/kg 2.0E-07 mg/kg-day NA NA 7.0E-01 mg/kg-day
Vanadium 4.6E+01 mg/kg 3.0E-08 mg/kg-day NA NA 5.0E-03 mg/kg-day
Exp. Route Total 2.2E-05
Exposure Point Total 5.1E-05
5.1E-05
Overflow Surface Sediment Total 5.1E-05
Exposure Medium Total
TABLE 7.6.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Cancer Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
Water
Canal Overflow -
Surface Water Ingestion
1,4-dichlorobenzene 5.9E-01 ug/L 1.8E-09 mg/kg-day 5.4E-03 1/(mg/kg-day) 9.5E-12 7.0E-02 mg/kg-day
Benzene 8.4E-01 ug/L 2.5E-09 mg/kg-day 5.5E-02 1/(mg/kg-day) 1.4E-10 4.0E-03 mg/kg-day
Chloroform 5.6E-01 ug/L 1.7E-09 mg/kg-day 3.1E-02 1/(mg/kg-day) 5.2E-11 1.0E-02 mg/kg-day
Ethylbenzene 8.7E-01 ug/L 2.6E-09 mg/kg-day 1.1E-02 1/(mg/kg-day) 2.8E-11 1.0E-01 mg/kg-day
Tetrachloroethylene(PCE) 2.4E+01 ug/L 7.3E-08 mg/kg-day 5.4E-01 1/(mg/kg-day) 3.9E-08 1.0E-02 mg/kg-day
Benzo(a)anthracene11.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 9.5E-10 NA
Benzo(a)pyrene12.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 2.2E-08 NA
Benzo(b)fluoranthene11.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 2.1E-09 NA
Dibenz(a,h)anthracene11.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 1.1E-08 NA
Indeno(1,2,3-c,d)pyrene15.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 5.4E-09 NA
Naphthalene 3.6E-01 ug/L 1.1E-09 mg/kg-day NA NA 2.0E-02 mg/kg-day
Arsenic 1.7E+01 ug/L 4.9E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 7.4E-08 3.0E-04 mg/kg-day
Chromium18.5E+00 ug/L 5.0E-01 1/(mg/kg-day) 6.4E-08 3.0E-03 mg/kg-day
Cobalt 3.9E+00 ug/L 1.2E-08 mg/kg-day NA NA 3.0E-04 mg/kg-day
Lead 1.5E+01 ug/L 4.4E-08 mg/kg-day NA NA NA
Selenium 3.4E+01 ug/L 1.0E-07 mg/kg-day NA NA 5.0E-03 mg/kg-day
Exp. Route Total 2.2E-07
TABLE 7.6.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium
Exposure
Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk Cancer Risk Intake/Exposure Concentration RfD/RfC
Hazard
Quotient
Value Units Value Units Value Units Value Units
Surface WaterOverflow Surface
Water
Canal Overflow -
Surface Water Dermal
1,4-dichlorobenzene 5.9E-01 ug/L 2.1E-08 mg/kg-day 5.4E-03 1/(mg/kg-day) 1.2E-10 7.0E-02 mg/kg-day
Benzene 8.4E-01 ug/L 7.5E-09 mg/kg-day 5.5E-02 1/(mg/kg-day) 4.2E-10 4.0E-03 mg/kg-day
Chloroform 5.6E-01 ug/L 2.8E-09 mg/kg-day 3.1E-02 1/(mg/kg-day) 8.8E-11 1.0E-02 mg/kg-day
Ethylbenzene 8.7E-01 ug/L 2.9E-08 mg/kg-day 1.1E-02 1/(mg/kg-day) 3.2E-10 1.0E-01 mg/kg-day
Tetrachloroethylene(PCE) 2.4E+01 ug/L 7.9E-07 mg/kg-day 5.4E-01 1/(mg/kg-day) 4.3E-07 1.0E-02 mg/kg-day
Benzo(a)anthracene11.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 1.8E-07 NA
Benzo(a)pyrene12.1E-01 ug/L 7.3E+00 1/(mg/kg-day) 5.9E-06 NA
Benzo(b)fluoranthene11.9E-01 ug/L 7.3E-01 1/(mg/kg-day) 5.5E-07 NA
Dibenz(a,h)anthracene11.0E-01 ug/L 7.3E+00 1/(mg/kg-day) 4.5E-06 NA
Indeno(1,2,3-c,d)pyrene15.0E-01 ug/L 7.3E-01 1/(mg/kg-day) 1.5E-06 NA
Naphthalene 3.6E-01 ug/L 1.3E-08 mg/kg-day NA NA 2.0E-02 mg/kg-day
Arsenic 1.7E+01 ug/L 7.0E-09 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.1E-08 3.0E-04 mg/kg-day
Chromium18.5E+00 ug/L 2.0E+01 1/(mg/kg-day) 8.8E-07 7.5E-05 mg/kg-day
Cobalt 3.9E+00 ug/L 6.6E-10 mg/kg-day NA NA 3.0E-04 mg/kg-day
Lead 1.5E+01 ug/L 6.3E-10 mg/kg-day NA NA NA
Selenium 3.4E+01 ug/L 1.4E-08 mg/kg-day NA NA 5.0E-03 mg/kg-day
Exp. Route Total 1.4E-05
Exposure Point Total 1.4E-05
1.4E-05
Overflow Surface Water Total 1.4E-05
Total Total of Receptor Risks Across All Media 7.5E-05 Total of Receptor Hazards Across All Media
Notes-
NA = Not available / Not applicable.
DAevent for surface water calculated on Table 7.4.CTE Supplement A.
Total includes maximum between air prior to and after aeration system operations, and surface water, and sediment.
1. See Table 7.6.CTE Supplement A for calculation of intake and cancer risk following MMOA method.
Exposure Medium Total
TABLE 7.6.CTE Supplement A
CALCULATION OF CHEMICAL CANCER RISKS FOR COPC WITH MUTAGENIC MODE OF ACTION
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Future
Receptor Population: Resident
Receptor Age: Adult/Child
Chemical of EPC Cancer Risk Calculations
Medium Exposure Medium Exposure Point Exposure Route Potential Concern Intake CSF/Unit Risk
Value Units Value Value Cancer Risk
0-2 yrs 2-6 yrs 16-19 yrs0-2 yrs
(ADAF=10)
2-6 yrs
(ADAF=3)
16-19 yrs
(ADAF=1)
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal
overflow Ingestion Benzo(a)anthracene 1.3E+02 mg/kg 3.0E-07 6.0E-07 4.8E-08 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 mg/kg/day 3.5E-06
Benzo(a)pyrene 7.3E+01 mg/kg 1.7E-07 3.4E-07 2.8E-08 mg/kg/day 7.3E+01 2.2E+01 7.3E+00 mg/kg/day 2.0E-05
Benzo(b)fluoranthene 7.9E+01 mg/kg 1.9E-07 3.7E-07 3.0E-08 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 mg/kg/day 2.2E-06
Benzo(k)fluoranthene 4.1E+01 mg/kg 9.6E-08 1.9E-07 1.5E-08 mg/kg/day 7.3E-01 2.2E-01 7.3E-02 mg/kg/day 1.1E-07
Chrysene 1.3E+02 mg/kg 3.0E-07 6.0E-07 4.8E-08 mg/kg/day 7.3E-02 2.2E-02 7.3E-03 mg/kg/day 3.5E-08
Dibenz(a,h)anthracene 5.5E+00 mg/kg 1.3E-08 2.6E-08 2.1E-09 mg/kg/day 7.3E+01 2.2E+01 7.3E+00 mg/kg/day 1.5E-06
Indeno(1,2,3-cd)pyrene 3.1E+01 mg/kg 7.4E-08 1.5E-07 1.2E-08 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 mg/kg/day 8.7E-07
Chromium 8.5E-01 mg/kg 2.0E-09 4.0E-09 3.2E-10 mg/kg/day 5.0E+00 1.5E+00 5.0E-01 mg/kg/day 1.6E-08
Dermal Benzo(a)anthracene 1.3E+02 mg/kg 2.2E-07 4.4E-07 1.4E-07 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 mg/kg/day 2.7E-06
Benzo(a)pyrene 7.3E+01 mg/kg 1.3E-07 2.5E-07 8.2E-08 mg/kg/day 7.3E+01 2.2E+01 7.3E+00 mg/kg/day 1.5E-05
Benzo(b)fluoranthene 7.9E+01 mg/kg 1.4E-07 2.7E-07 8.9E-08 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 mg/kg/day 1.6E-06
Benzo(k)fluoranthene 4.1E+01 mg/kg 7.0E-08 1.4E-07 4.6E-08 mg/kg/day 7.3E-01 2.2E-01 7.3E-02 mg/kg/day 8.5E-08
Chrysene 1.3E+02 mg/kg 2.2E-07 4.3E-07 1.4E-07 mg/kg/day 7.3E-02 2.2E-02 7.3E-03 mg/kg/day 2.6E-08
Dibenz(a,h)anthracene 5.5E+00 mg/kg 9.3E-09 1.9E-08 6.1E-09 mg/kg/day 7.3E+01 2.2E+01 7.3E+00 mg/kg/day 1.1E-06
Indeno(1,2,3-cd)pyrene 3.1E+01 mg/kg 5.4E-08 1.1E-07 3.5E-08 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 mg/kg/day 6.5E-07
Chromium 8.5E+01 mg/kg 1.1E-09 2.2E-09 7.3E-10 mg/kg/day 2.0E+02 6.0E+01 2.0E+01 mg/kg/day 3.7E-07
Surface WaterOverflow Surface
Water
Canal Overflow -
Surface Water Ingestion Benzo(a)anthracene 1.0E-01 ug/L 7.9E-11 1.6E-10 2.6E-11 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 9.5E-10
Benzo(a)pyrene 2.1E-01 ug/L 1.6E-10 3.1E-10 5.0E-11 mg/kg/day 7.3E+01 2.2E+01 7.3E+00 1/(mg/kg-day) 2.2E-08
Benzo(b)fluoranthene 1.9E-01 ug/L 1.4E-10 2.9E-10 4.6E-11 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 2.1E-09
Dibenz(a,h)anthracene 1.0E-01 ug/L 7.7E-11 1.5E-10 2.5E-11 mg/kg/day 7.3E+01 2.2E+01 7.3E+00 1/(mg/kg-day) 1.1E-08
Indeno(1,2,3-cd)pyrene 5.0E-01 ug/L 3.8E-10 7.6E-10 1.2E-10 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 5.4E-09
Chromium 8.5E+00 ug/L 6.5E-09 1.3E-08 2.1E-09 mg/kg/day 5.0E+00 1.5E+00 5.0E-01 1/(mg/kg-day) 6.4E-08
Dermal Benzo(a)anthracene 1.0E-01 ug/L 1.4E-08 2.9E-08 9.4E-09 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 1.8E-07
Benzo(a)pyrene 2.1E-01 ug/L 4.9E-08 9.8E-08 3.2E-08 mg/kg/day 7.3E+01 2.2E+01 7.3E+00 1/(mg/kg-day) 5.9E-06
Benzo(b)fluoranthene 1.9E-01 ug/L 4.6E-08 9.1E-08 3.0E-08 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 5.5E-07
Dibenz(a,h)anthracene 1.0E-01 ug/L 3.7E-08 7.4E-08 2.4E-08 mg/kg/day 7.3E+01 2.2E+01 7.3E+00 1/(mg/kg-day) 4.5E-06
Indeno(1,2,3-cd)pyrene 5.0E-01 ug/L 1.2E-07 2.4E-07 7.9E-08 mg/kg/day 7.3E+00 2.2E+00 7.3E-01 1/(mg/kg-day) 1.5E-06
Chromium 8.5E+00 ug/L 2.7E-09 5.3E-09 1.7E-09 mg/kg/day 2.0E+02 6.0E+01 2.0E+01 1/(mg/kg-day) 8.8E-07
Units Units
Page 87 of 96
TABLE 7.7.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Striped Bass in Gowanus Canal
Ingestion
p,p'-DDE 1.2E-02 mg/kg 9.7E-09 mg/kg-day 3.4E-01 1/(mg/kg-day) 3.3E-09 2.3E-07 mg/kg-day NA NA
p,p'-DDT 9.6E-03 mg/kg 7.7E-09 mg/kg-day 3.4E-01 1/(mg/kg-day) 2.6E-09 1.8E-07 mg/kg-day 5.0E-04 mg/kg-day 3.6E-04
Dioxin-Like PCB TEQ 4.3E-06 mg/kg 3.5E-12 mg/kg-day 1.6E+05 1/(mg/kg-day) 5.4E-07 8.1E-11 mg/kg-day NA NA
Nondioxin-Like 4.1E-01 mg/kg 3.3E-07 mg/kg-day 1.0E+00 1/(mg/kg-day) 3.3E-07 7.7E-06 mg/kg-day NA NA
Total PCB 4.4E-01 mg/kg 3.5E-07 mg/kg-day NA NA 8.2E-06 mg/kg-day 2.0E-05 mg/kg-day 4.1E-01
Arsenic 6.8E-02 mg/kg 5.5E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 8.2E-08 1.3E-06 mg/kg-day 3.0E-04 mg/kg-day 4.3E-03
Mercury 2.0E-01 mg/kg 1.6E-07 mg/kg-day NA NA 3.8E-06 mg/kg-day 1.0E-04 mg/kg-day 3.8E-02
Selenium 1.2E+00 mg/kg 9.7E-07 mg/kg-day NA NA 2.3E-05 mg/kg-day 5.0E-03 mg/kg-day 4.5E-03
Exp. Route Total 9.6E-07 4.6E-01
Exposure Point Total 9.6E-07 4.6E-01
Exposure Medium Total - Striped Bass in Gowanus Canal 9.6E-07 4.6E-01
Fish and Crab Tissue
White Perch in Gowanus Canal
Ingestion
Dioxin-Like PCB TEQ 5.8E-06 mg/kg 5.1E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 8.0E-08 1.2E-11 mg/kg-day NA NA
Nondioxin-Like 4.4E-01 mg/kg 3.9E-08 mg/kg-day 1.0E+00 1/(mg/kg-day) 3.9E-08 9.0E-07 mg/kg-day NA NA
Total PCB 4.6E-01 mg/kg 4.1E-08 mg/kg-day NA NA 9.5E-07 mg/kg-day 2.0E-05 mg/kg-day 4.8E-02
Mercury 1.9E-01 mg/kg 1.7E-08 mg/kg-day NA NA 3.9E-07 mg/kg-day 1.0E-04 mg/kg-day 3.9E-03
Selenium 1.4E+00 mg/kg 1.2E-07 mg/kg-day NA NA 2.9E-06 mg/kg-day 5.0E-03 mg/kg-day 5.8E-04
Exp. Route Total 1.2E-07 5.2E-02
Exposure Point Total 1.2E-07 5.2E-02
Exposure Medium Total - White Perch in Gowanus Canal 1.2E-07 5.2E-02
TABLE 7.7.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Eel in Gowanus Canal Ingestion
alpha-Chlordane 2.2E-02 mg/kg 1.6E-08 mg/kg-day 3.5E-01 1/(mg/kg-day) 5.5E-09 3.7E-07 mg/kg-day 5.0E-04 mg/kg-day 7.3E-04
Dieldrin 1.7E-02 mg/kg 1.2E-08 mg/kg-day 1.6E+01 1/(mg/kg-day) 1.9E-07 2.8E-07 mg/kg-day 5.0E-05 mg/kg-day 5.6E-03
gamma-Chlordane 1.3E-02 mg/kg 9.2E-09 mg/kg-day 3.5E-01 1/(mg/kg-day) 3.2E-09 2.2E-07 mg/kg-day 5.0E-04 mg/kg-day 4.3E-04
p,p'-DDD 3.8E-02 mg/kg 2.7E-08 mg/kg-day 2.4E-01 1/(mg/kg-day) 6.5E-09 6.3E-07 mg/kg-day NA NA
p,p'-DDE 2.5E-02 mg/kg 1.8E-08 mg/kg-day 3.4E-01 1/(mg/kg-day) 6.0E-09 4.1E-07 mg/kg-day NA NA
p,p'-DDT 4.7E-02 mg/kg 3.3E-08 mg/kg-day 3.4E-01 1/(mg/kg-day) 1.1E-08 7.8E-07 mg/kg-day 5.0E-04 mg/kg-day 1.6E-03
Dioxin-Like PCB TEQ 1.4E-05 mg/kg 1.0E-11 mg/kg-day 1.6E+05 1/(mg/kg-day) 1.6E-06 2.3E-10 mg/kg-day NA NA
Nondioxin-Like 1.2E+00 mg/kg 8.7E-07 mg/kg-day 1.0E+00 1/(mg/kg-day) 8.7E-07 2.0E-05 mg/kg-day NA NA
Total PCB 1.4E+00 mg/kg 9.6E-07 mg/kg-day NA NA 2.2E-05 mg/kg-day 2.0E-05 mg/kg-day 1.1E+00
Arsenic 5.0E-02 mg/kg 3.6E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 5.3E-08 8.3E-07 mg/kg-day 3.0E-04 mg/kg-day 2.8E-03
Chromium 6.7E-01 mg/kg 4.8E-07 mg/kg-day 5.0E-01 1/(mg/kg-day) 2.4E-07 1.1E-05 mg/kg-day 3.0E-03 mg/kg-day 3.7E-03
Copper 7.4E+00 mg/kg 5.3E-06 mg/kg-day NA NA 1.2E-04 mg/kg-day 4.0E-02 mg/kg-day 3.1E-03
Cyanide, total 3.1E+00 mg/kg 2.2E-06 mg/kg-day NA NA 5.1E-05 mg/kg-day 2.0E-02 2.6E-03
Mercury 2.6E-01 mg/kg 1.8E-07 mg/kg-day NA NA 4.3E-06 mg/kg-day 1.0E-04 4.3E-02
Selenium 1.4E+00 mg/kg 1.0E-06 mg/kg-day NA NA 2.3E-05 mg/kg-day 5.0E-03 mg/kg-day 4.6E-03
Exp. Route Total 2.9E-06 1.2E+00
Exposure Point Total 2.9E-06 1.2E+00
Exposure Medium Total - Eel in Gowanus Canal 2.9E-06 1.2E+00
TABLE 7.7.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Blue Crab in Gowanus Canal
Ingestion
Benzo(a)anthracene 7.7E-03 mg/kg 7.5E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 5.5E-08 1.8E-06 mg/kg-day NA NA
Benzo(a)pyrene 1.2E-02 mg/kg 1.2E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 8.4E-07 2.7E-06 mg/kg-day NA NA
Benzo(b)fluoranthene 6.4E-03 mg/kg 6.3E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 4.6E-08 1.5E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene 3.9E-03 mg/kg 3.9E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 2.8E-07 9.0E-07 mg/kg-day NA NA
Indeno(1,2,3-cd)pyrene 9.9E-03 mg/kg 9.7E-08 mg/kg-day 7.3E-01 1/(mg/kg-day) 7.1E-08 2.3E-06 mg/kg-day NA NA
Dioxin-Like PCB TEQ 5.0E-06 mg/kg 4.9E-11 mg/kg-day 1.6E+05 1/(mg/kg-day) 7.7E-06 1.2E-09 mg/kg-day NA NA
Nondioxin-Like 1.4E-01 mg/kg 1.4E-06 mg/kg-day 1.0E+00 1/(mg/kg-day) 1.4E-06 3.3E-05 mg/kg-day NA NA
Total PCB 1.7E-01 mg/kg 1.6E-06 mg/kg-day NA NA 3.8E-05 mg/kg-day 2.0E-05 mg/kg-day 1.9E+00
Arsenic 1.3E-01 mg/kg 1.3E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.9E-06 3.0E-05 mg/kg-day 3.0E-04 mg/kg-day 1.0E-01
Copper 1.0E+01 mg/kg 1.0E-04 mg/kg-day NA NA 2.3E-03 mg/kg-day 4.0E-02 mg/kg-day 5.8E-02
Mercury 1.2E-01 mg/kg 1.2E-06 mg/kg-day NA NA 2.8E-05 mg/kg-day 1.0E-04 mg/kg-day 2.8E-01
Exp. Route Total 1.2E-05 2.3E+00
Exposure Point Total 1.2E-05 2.3E+00
Exposure Medium Total - Crab in Gowanus Canal 1.2E-05 2.3E+00
Total Fish Total of Receptor Risks - Fish 4.0E-06 Total of Receptor Hazards - Fish 1.7E+00
Total Blue Crab Total of Receptor Risks - Blur Crab 1.2E-05 Total of Receptor Hazards - Blue Crab 2.3E+00
Notes-
NA = Not available / Not applicable.
TABLE 7.8.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Striped Bass in Gowanus Canal
Ingestion
p,p'-DDE 1.2E-02 mg/kg 7.9E-09 mg/kg-day 3.4E-01 1/(mg/kg-day) 2.7E-09 1.8E-07 mg/kg-day NA NA
p,p'-DDT 9.6E-03 mg/kg 6.3E-09 mg/kg-day 3.4E-01 1/(mg/kg-day) 2.1E-09 1.5E-07 mg/kg-day 5.0E-04 mg/kg-day 2.9E-04
Dioxin-Like PCB TEQ 4.3E-06 mg/kg 2.8E-12 mg/kg-day 1.6E+05 1/(mg/kg-day) 4.4E-07 6.6E-11 mg/kg-day NA NA
Nondioxin-Like 4.1E-01 mg/kg 2.7E-07 mg/kg-day 1.0E+00 1/(mg/kg-day) 2.7E-07 6.3E-06 mg/kg-day NA NA
Total PCB 4.4E-01 mg/kg 2.9E-07 mg/kg-day NA NA 6.7E-06 mg/kg-day 2.0E-05 mg/kg-day 3.3E-01
Arsenic 6.8E-02 mg/kg 4.5E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 6.7E-08 1.0E-06 mg/kg-day 3.0E-04 mg/kg-day 3.5E-03
Mercury 2.0E-01 mg/kg 1.3E-07 mg/kg-day NA NA 3.1E-06 mg/kg-day 1.0E-04 mg/kg-day 3.1E-02
Selenium 1.2E+00 mg/kg 7.9E-07 mg/kg-day NA NA 1.8E-05 mg/kg-day 5.0E-03 mg/kg-day 3.7E-03
Exp. Route Total 7.8E-07 3.7E-01
Exposure Point Total 7.8E-07 3.7E-01
Exposure Medium Total - Striped Bass in Gowanus Canal 7.8E-07 3.7E-01
Fish and Crab Tissue
White Perch in Gowanus Canal
Ingestion
Dioxin-Like PCB TEQ 5.8E-06 mg/kg 4.0E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 6.2E-08 9.3E-12 mg/kg-day NA NA
Nondioxin-Like 4.4E-01 mg/kg 3.0E-08 mg/kg-day 1.0E+00 1/(mg/kg-day) 3.0E-08 7.0E-07 mg/kg-day NA NA
Total PCB 4.6E-01 mg/kg 3.2E-08 mg/kg-day NA NA 7.4E-07 mg/kg-day 2.0E-05 mg/kg-day 3.7E-02
Mercury 1.9E-01 mg/kg 1.3E-08 mg/kg-day NA NA 3.0E-07 mg/kg-day 1.0E-04 mg/kg-day 3.0E-03
Selenium 1.4E+00 mg/kg 9.6E-08 mg/kg-day NA NA 2.2E-06 mg/kg-day 5.0E-03 mg/kg-day 4.5E-04
Exp. Route Total 9.2E-08 4.1E-02
Exposure Point Total 9.2E-08 4.1E-02
Exposure Medium Total - White Perch in Gowanus Canal 9.2E-08 4.1E-02
TABLE 7.8.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Eel in Gowanus Canal Ingestion
alpha-Chlordane 2.2E-02 mg/kg 1.2E-08 mg/kg-day 3.5E-01 1/(mg/kg-day) 4.3E-09 2.8E-07 mg/kg-day 5.0E-04 mg/kg-day 5.7E-04
Dieldrin 1.7E-02 mg/kg 9.4E-09 mg/kg-day 1.6E+01 1/(mg/kg-day) 1.5E-07 2.2E-07 mg/kg-day 5.0E-05 mg/kg-day 4.4E-03
gamma-Chlordane 1.3E-02 mg/kg 7.2E-09 mg/kg-day 3.5E-01 1/(mg/kg-day) 2.5E-09 1.7E-07 mg/kg-day 5.0E-04 mg/kg-day 3.4E-04
p,p'-DDD 3.8E-02 mg/kg 2.1E-08 mg/kg-day 2.4E-01 1/(mg/kg-day) 5.1E-09 4.9E-07 mg/kg-day NA NA
p,p'-DDE 2.5E-02 mg/kg 1.4E-08 mg/kg-day 3.4E-01 1/(mg/kg-day) 4.7E-09 3.2E-07 mg/kg-day NA NA
p,p'-DDT 4.7E-02 mg/kg 2.6E-08 mg/kg-day 3.4E-01 1/(mg/kg-day) 8.9E-09 6.1E-07 mg/kg-day 5.0E-04 mg/kg-day 1.2E-03
Dioxin-Like PCB TEQ 1.4E-05 mg/kg 7.8E-12 mg/kg-day 1.6E+05 1/(mg/kg-day) 1.2E-06 1.8E-10 mg/kg-day NA NA
Nondioxin-Like 1.2E+00 mg/kg 6.8E-07 mg/kg-day 1.0E+00 1/(mg/kg-day) 6.8E-07 1.6E-05 mg/kg-day NA NA
Total PCB 1.4E+00 mg/kg 7.5E-07 mg/kg-day NA NA 1.7E-05 mg/kg-day 2.0E-05 mg/kg-day 8.7E-01
Arsenic 5.0E-02 mg/kg 2.8E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 4.2E-08 6.5E-07 mg/kg-day 3.0E-04 mg/kg-day 2.2E-03
Chromium (12-15)* 6.7E-01 mg/kg 3.7E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 5.6E-07 8.7E-06 mg/kg-day 3.0E-03 mg/kg-day 2.9E-03
Copper 7.4E+00 mg/kg 4.1E-06 mg/kg-day NA NA 9.6E-05 mg/kg-day 4.0E-02 mg/kg-day 2.4E-03
Cyanide, total 3.1E+00 mg/kg 1.7E-06 mg/kg-day NA NA 4.0E-05 mg/kg-day 2.0E-02 mg/kg-day 2.0E-03
Mercury 2.6E-01 mg/kg 1.4E-07 mg/kg-day NA NA 3.4E-06 mg/kg-day 1.0E-04 mg/kg-day 3.4E-02
Selenium 1.4E+00 mg/kg 7.8E-07 mg/kg-day NA NA 1.8E-05 mg/kg-day 5.0E-03 mg/kg-day 3.6E-03
Exp. Route Total 2.7E-06 9.3E-01
Exposure Point Total 2.7E-06 9.3E-01
Exposure Medium Total - Eel in Gowanus Canal 2.7E-06 9.3E-01
TABLE 7.8.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Blue Crab in Gowanus Canal
Ingestion
Benzo(a)anthracene (12-15)* 7.7E-03 mg/kg 5.9E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.3E-07 1.4E-06 mg/kg-day NA NA
Benzo(a)pyrene (12-15)* 1.2E-02 mg/kg 9.1E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 2.0E-06 2.1E-06 mg/kg-day NA NA
Benzo(b)fluoranthene (12-15)* 6.4E-03 mg/kg 4.9E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.1E-07 1.2E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (12-15)* 3.9E-03 mg/kg 3.0E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 6.7E-07 7.1E-07 mg/kg-day NA NA
Indeno(1,2,3-cd)pyrene (12-15)* 9.9E-03 mg/kg 7.6E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.7E-07 1.8E-06 mg/kg-day NA NA
Dioxin-Like PCB TEQ 5.0E-06 mg/kg 3.9E-11 mg/kg-day 1.6E+05 1/(mg/kg-day) 6.1E-06 1.8E-10 mg/kg-day NA NA
Nondioxin-Like 1.4E-01 mg/kg 1.1E-06 mg/kg-day 1.0E+00 1/(mg/kg-day) 1.1E-06 5.1E-06 mg/kg-day NA NA
Total PCB 1.7E-01 mg/kg 1.3E-06 mg/kg-day NA NA 6.0E-06 mg/kg-day 2.0E-05 mg/kg-day 3.0E-01
Arsenic 1.3E-01 mg/kg 1.0E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.5E-06 2.4E-05 mg/kg-day 3.0E-04 mg/kg-day 7.9E-02
Copper 1.0E+01 mg/kg 7.9E-05 mg/kg-day NA NA 1.8E-03 mg/kg-day 4.0E-02 mg/kg-day 4.6E-02
Mercury 1.2E-01 mg/kg 9.6E-07 mg/kg-day NA NA 2.2E-05 mg/kg-day 1.0E-04 mg/kg-day 2.2E-01
Exp. Route Total 1.2E-05 6.5E-01
Exposure Point Total 1.2E-05 6.5E-01
Exposure Medium Total - Crab in Gowanus Canal 1.2E-05 6.5E-01
Total Fish Total of Receptor Risks - Fish 3.5E-06 Total of Receptor Hazards - Fish 1.3E+00
Total Blue Crab Total of Receptor Risks - Blur Crab 1.2E-05 Total of Receptor Hazards - Blue Crab 6.5E-01
Notes-
NA = Not available / Not applicable.
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 3 used to adjust CSF for 12-15 year old for exposure duration of 3 years, the CTE exposure duration for an adolescent.
TABLE 7.9.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Striped Bass in Gowanus Canal
Ingestion
p,p'-DDE 1.2E-02 mg/kg 1.5E-08 mg/kg-day 3.4E-01 1/(mg/kg-day) 5.2E-09 3.6E-07 mg/kg-day NA NA
p,p'-DDT 9.6E-03 mg/kg 1.2E-08 mg/kg-day 3.4E-01 1/(mg/kg-day) 4.1E-09 2.8E-07 mg/kg-day 5.0E-04 mg/kg-day 5.7E-04
Dioxin-Like PCB TEQ 4.3E-06 mg/kg 5.5E-12 mg/kg-day 1.6E+05 1/(mg/kg-day) 8.5E-07 1.3E-10 mg/kg-day NA NA
Nondioxin-Like 4.1E-01 mg/kg 5.2E-07 mg/kg-day 1.0E+00 1/(mg/kg-day) 5.2E-07 1.2E-05 mg/kg-day NA NA
Total PCB 4.4E-01 mg/kg 5.5E-07 mg/kg-day NA NA 1.3E-05 mg/kg-day 2.0E-05 mg/kg-day 6.4E-01
Arsenic 6.8E-02 mg/kg 8.6E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 1.3E-07 2.0E-06 mg/kg-day 3.0E-04 mg/kg-day 6.7E-03
Mercury 2.0E-01 mg/kg 2.5E-07 mg/kg-day NA 1/(mg/kg-day) NA 5.9E-06 mg/kg-day 1.0E-04 mg/kg-day 5.9E-02
Selenium 1.2E+00 mg/kg 1.5E-06 mg/kg-day NA NA 3.6E-05 mg/kg-day 5.0E-03 mg/kg-day 7.1E-03
Exp. Route Total 1.5E-06 7.2E-01
Exposure Point Total 1.5E-06 7.2E-01
Exposure Medium Total - Striped Bass in Gowanus Canal 1.5E-06 7.2E-01
Fish and Crab Tissue
White Perch in Gowanus Canal
Ingestion
Dioxin-Like PCB TEQ 5.8E-06 mg/kg 8.1E-13 mg/kg-day 1.6E+05 1/(mg/kg-day) 1.3E-07 1.9E-11 mg/kg-day NA NA
Nondioxin-Like 4.4E-01 mg/kg 6.1E-08 mg/kg-day 1.0E+00 1/(mg/kg-day) 6.1E-08 1.4E-06 mg/kg-day NA NA
Total PCB 4.6E-01 mg/kg 6.4E-08 mg/kg-day NA NA 1.5E-06 mg/kg-day 2.0E-05 mg/kg-day 7.5E-02
Mercury 1.9E-01 mg/kg 2.6E-08 mg/kg-day NA NA 6.2E-07 mg/kg-day 1.0E-04 mg/kg-day 6.2E-03
Selenium 1.4E+00 mg/kg 1.9E-07 mg/kg-day NA NA 4.5E-06 mg/kg-day 5.0E-03 mg/kg-day 9.1E-04
Exp. Route Total 1.9E-07 8.2E-02
Exposure Point Total 1.9E-07 8.2E-02
Exposure Medium Total - White Perch in Gowanus Canal 1.9E-07 8.2E-02
TABLE 7.9.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Surface Water/Sediment
Fish and Crab Tissue
Eel in Gowanus Canal Ingestion
alpha-Chlordane 2.2E-02 mg/kg 2.5E-08 mg/kg-day 3.5E-01 1/(mg/kg-day) 8.6E-09 5.7E-07 mg/kg-day 5.0E-04 mg/kg-day 1.1E-03
Dieldrin 1.7E-02 mg/kg 1.9E-08 mg/kg-day 1.6E+01 1/(mg/kg-day) 3.0E-07 4.4E-07 mg/kg-day 5.0E-05 mg/kg-day 8.9E-03
gamma-Chlordane 1.3E-02 mg/kg 1.5E-08 mg/kg-day 3.5E-01 1/(mg/kg-day) 5.1E-09 3.4E-07 mg/kg-day 5.0E-04 mg/kg-day 6.8E-04
p,p'-DDD 3.8E-02 mg/kg 4.3E-08 mg/kg-day 2.4E-01 1/(mg/kg-day) 1.0E-08 9.9E-07 mg/kg-day NA NA
p,p'-DDE 2.5E-02 mg/kg 2.8E-08 mg/kg-day 3.4E-01 1/(mg/kg-day) 9.5E-09 6.5E-07 mg/kg-day NA NA
p,p'-DDT 4.7E-02 mg/kg 5.3E-08 mg/kg-day 3.4E-01 1/(mg/kg-day) 1.8E-08 1.2E-06 mg/kg-day 5.0E-04 mg/kg-day 2.5E-03
Dioxin-Like PCB TEQ 1.4E-05 mg/kg 1.6E-11 mg/kg-day 1.6E+05 1/(mg/kg-day) 2.5E-06 3.7E-10 mg/kg-day NA NA
Nondioxin-Like 1.2E+00 mg/kg 1.4E-06 mg/kg-day 1.0E+00 1/(mg/kg-day) 1.4E-06 3.2E-05 mg/kg-day NA NA
Total PCB 1.4E+00 mg/kg 1.5E-06 mg/kg-day NA NA 3.5E-05 mg/kg-day 2.0E-05 mg/kg-day 1.8E+00
Arsenic 5.0E-02 mg/kg 5.6E-08 mg/kg-day 1.5E+00 1/(mg/kg-day) 8.4E-08 1.3E-06 mg/kg-day 3.0E-04 mg/kg-day 4.4E-03
Chromium (0-2)* 6.7E-01 mg/kg 5.0E-07 mg/kg-day 5.0E+00 1/(mg/kg-day) 2.5E-06 1.8E-05 mg/kg-day 3.0E-03 mg/kg-day 5.8E-03
Chromium (2-3)* 6.7E-01 mg/kg 2.5E-07 mg/kg-day 1.5E+00 1/(mg/kg-day) 3.8E-07
Copper 7.4E+00 mg/kg 8.3E-06 mg/kg-day NA NA 1.9E-04 mg/kg-day 4.0E-02 mg/kg-day 4.8E-03
Cyanide, total 3.1E+00 mg/kg 3.5E-06 mg/kg-day NA NA 8.1E-05 mg/kg-day 2.0E-02 mg/kg-day 4.1E-03
Mercury 2.6E-01 mg/kg 2.9E-07 mg/kg-day NA NA 6.8E-06 mg/kg-day 1.0E-04 mg/kg-day 6.8E-02
Selenium 1.4E+00 mg/kg 1.6E-06 mg/kg-day NA NA 3.7E-05 mg/kg-day 5.0E-03 mg/kg-day 7.3E-03
Exp. Route Total 7.1E-06 1.9E+00
Exposure Point Total 7.1E-06 1.9E+00
Exposure Medium Total - Eel in Gowanus Canal 7.1E-06 1.9E+00
TABLE 7.9.CTE
CALCULATION OF CHEMICAL CANCER RISKS AND NON-CANCER HAZARDS
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium
Exposure Medium Exposure Point Exposure Route Chemical of EPC Cancer Risk Calculations Non-Cancer Hazard Calculations
Potential ConcernValue Units Intake/Exposure Concentration CSF/Unit Risk
Cancer RiskIntake/Exposure Concentration RfD/RfC
Hazard Quotient
Value Units Value Units Value Units Value Units
Fish and Crab Tissue
Blue Crab in Gowanus Canal
Ingestion
Benzo(a)anthracene (0-2)* 7.7E-03 mg/kg 7.8E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 5.7E-07 2.7E-06 mg/kg-day NA NA
Benzo(a)anthracene (2-3)* 7.7E-03 mg/kg 3.9E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 8.5E-08
Benzo(a)pyrene (0-2)* 1.2E-02 mg/kg 1.2E-07 mg/kg-day 7.3E+01 1/(mg/kg-day) 8.7E-06 4.2E-06 mg/kg-day NA NA
Benzo(a)pyrene (2-3)* 1.2E-02 mg/kg 6.0E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 1.3E-06
Benzo(b)fluoranthene (0-2)* 6.4E-03 mg/kg 6.5E-08 mg/kg-day 7.3E+00 1/(mg/kg-day) 4.7E-07 2.3E-06 mg/kg-day NA NA
Benzo(b)fluoranthene (2-3)* 6.4E-03 mg/kg 3.2E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 7.1E-08
Dibenz(a,h)anthracene (0-2)* 3.9E-03 mg/kg 4.0E-08 mg/kg-day 7.3E+01 1/(mg/kg-day) 2.9E-06 1.4E-06 mg/kg-day NA NA
Dibenz(a,h)anthracene (2-3)* 3.9E-03 mg/kg 2.0E-08 mg/kg-day 2.2E+01 1/(mg/kg-day) 4.4E-07
Indeno(1,2,3-cd)pyrene (0-2)* 9.9E-03 mg/kg 1.0E-07 mg/kg-day 7.3E+00 1/(mg/kg-day) 7.3E-07 3.5E-06 mg/kg-day NA NA
Indeno(1,2,3-cd)pyrene (2-3)* 9.9E-03 mg/kg 5.0E-08 mg/kg-day 2.2E+00 1/(mg/kg-day) 1.1E-07
Dioxin-Like PCB TEQ 5.0E-06 mg/kg 7.6E-11 mg/kg-day 1.6E+05 1/(mg/kg-day) 1.2E-05 1.8E-09 mg/kg-day NA NA
Nondioxin-Like 1.4E-01 mg/kg 2.2E-06 mg/kg-day 1.0E+00 1/(mg/kg-day) 2.2E-06 5.1E-05 mg/kg-day NA NA
Total PCB 1.7E-01 mg/kg 2.5E-06 mg/kg-day NA NA 5.9E-05 mg/kg-day 2.0E-05 mg/kg-day 2.9E+00
Arsenic 1.3E-01 mg/kg 2.0E-06 mg/kg-day 1.5E+00 1/(mg/kg-day) 3.0E-06 4.6E-05 mg/kg-day 3.0E-04 mg/kg-day 1.5E-01
Copper 1.0E+01 mg/kg 1.5E-04 mg/kg-day NA NA 3.6E-03 mg/kg-day 4.0E-02 mg/kg-day 9.0E-02
Mercury 1.2E-01 mg/kg 1.9E-06 mg/kg-day NA NA 4.4E-05 mg/kg-day 1.0E-04 mg/kg-day 4.4E-01
Exp. Route Total 3.2E-05 3.6E+00
Exposure Point Total 3.2E-05 3.6E+00
Exposure Medium Total - Crab in Gowanus Canal 3.2E-05 3.6E+00
Total Fish Total of Receptor Risks - Fish 8.8E-06 Total of Receptor Hazards - Fish 2.7E+00
Total Blue Crab Total of Receptor Risks - Blur Crab 3.2E-05 Total of Receptor Hazards - Blue Crab 3.6E+00
Notes-
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used to adjust CSF for 0-2 year old for exposure duration of 2 years, ADAF of 3 used to adjust CSF for 2-3 year old for exposure duration of 1 year, for a total CTE exposure duration of 3 years.
Non-cancer calculations shown under 0-2 year old only, as non-cancer calculations are not adjusted for MMOA.
NA = Not available / Not applicable.
TABLE 9.1.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Acenaphthene NA NA NA 0.0E+00 Liver 3.1E-04 NA 1.7E-03 2.0E-03
Benzo(a)anthracene 1.6E-06 NA 8.7E-06 1.0E-05 NA NA NA 0.0E+00
Benzo(a)pyrene 1.4E-05 NA 7.4E-05 8.7E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene 1.4E-06 NA 7.8E-06 9.2E-06 NA NA NA 0.0E+00
Benzo(k)fluoranthene 8.2E-08 NA 4.4E-07 5.3E-07 NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate 8.2E-09 NA 3.4E-08 4.2E-08 Increased Liver Weight 8.5E-05 NA 3.5E-04 4.4E-04
Chrysene 3.2E-08 NA 1.7E-07 2.1E-07 NA NA NA 0.0E+00
Dibenz(a,h)anthracene 7.9E-07 NA 4.3E-06 5.0E-06 NA NA NA 0.0E+00
Fluoranthene NA NA NA 0.0E+00 Kidney, Liver, Blood 6.3E-04 NA 3.4E-03 4.0E-03
Indeno(1,2,3-c,d)pyrene 6.2E-07 NA 3.4E-06 4.0E-06 NA NA NA 0.0E+00
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 8.7E-06 NA 4.7E-05 5.6E-05
Pyrene NA NA NA 0.0E+00 Kidney 9.0E-04 NA 4.8E-03 5.7E-03
Dioxin-Like PCB TEQ 1.1E-07 NA 6.4E-07 7.5E-07 NA NA NA 0.0E+00
Nondioxin-Like PCB 1.8E-07 NA 1.1E-06 1.2E-06 NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.4E-02 NA 8.0E-02 9.3E-02
Aluminum NA NA NA 0.0E+00 Neurological 8.1E-04 NA 3.4E-04 1.1E-03
Arsenic 4.7E-07 NA 5.9E-07 1.1E-06 Skin, Vascular 3.1E-03 NA 3.8E-03 6.9E-03
Cadmium NA NA NA 0.0E+00 Proteinuria (Kidney) 4.9E-04 NA 8.1E-04 1.3E-03
Chromium 8.2E-07 NA 1.4E-05 1.4E-05 Not identified 1.6E-03 NA 2.6E-02 2.8E-02
Cobalt NA NA NA 0.0E+00 Thyroid 2.2E-03 NA 9.1E-04 3.1E-03
Copper NA NA NA 0.0E+00 Gastrointestinal 4.5E-04 NA 1.9E-04 6.3E-04
Iron NA NA NA 0.0E+00 Gastrointestinal 2.9E-03 NA 1.2E-03 4.1E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Manganese NA NA NA 0.0E+00 CNS 1.1E-04 NA 6.9E-03 7.0E-03
Vanadium NA NA NA 0.0E+00 Hair 5.1E-04 NA 2.1E-04 7.2E-04
Chemical Total 2.0E-05 NA 1.1E-04 1.3E-04 2.8E-02 NA 1.3E-01 1.6E-01
Exposed Surface Sediment Total 1.3E-04 1.6E-01
TABLE 9.1.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Dry event) Benzene 5.6E-09 NA 3.6E-08 4.1E-08 Blood, Immune 7.4E-05 NA 4.7E-04 5.5E-04
Benzo(a)anthracene 8.8E-09 NA 3.6E-06 3.6E-06 NA NA NA 0.0E+00
Benzo(a)pyrene 2.2E-07 NA 1.5E-04 1.6E-04 NA NA NA 0.0E+00
Benzo(b)fluoranthene 9.9E-09 NA 7.1E-06 7.1E-06 NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate 1.6E-09 NA 7.8E-08 8.0E-08 Increased Liver Weight 1.6E-05 NA 8.2E-04 8.3E-04
Indeno(1,2,3-c,d)pyrene 4.4E-09 NA 3.1E-06 3.2E-06 NA NA NA 0.0E+00
Arsenic 1.4E-06 NA 4.9E-07 1.8E-06 Skin, Vascular 8.8E-03 NA 3.2E-03 1.2E-02
Chromium 4.3E-07 NA 1.2E-05 1.3E-05 Not identified 8.3E-04 NA 2.4E-02 2.5E-02
Copper 0.0E+00 NA NA 0.0E+00 Gastrointestinal 5.7E-04 NA 2.0E-04 7.7E-04
Selenium 0.0E+00 NA NA 0.0E+00 Whole Body 1.1E-03 NA 3.9E-04 1.5E-03
Chemical Total 2.0E-06 NA 1.8E-04 1.8E-04 1.1E-02 NA 2.9E-02 4.0E-02
Surface Water Total - Dry Event 1.8E-04 4.0E-02
TABLE 9.1.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Wet event) 1,4-dichlorobenzene 1.4E-10 NA 3.2E-09 3.4E-09 Liver 1.1E-06 NA 2.5E-05 2.6E-05
Benzene 2.1E-09 NA 1.3E-08 1.5E-08 Blood, Immune 2.8E-05 NA 1.8E-04 2.0E-04
Chloroform 7.9E-10 NA 2.6E-09 3.4E-09 Liver, Body Weight 7.4E-06 NA 2.5E-05 3.2E-05
Ethylbenzene 4.3E-10 NA 9.3E-09 9.8E-09 Liver, Kidney 1.1E-06 NA 2.5E-05 2.6E-05
Tetrachloroethylene(PCE) 6.0E-07 NA 1.2E-05 1.2E-05 Liver 3.2E-04 NA 6.4E-03 6.7E-03
Benzo(a)anthracene 3.4E-09 NA 1.4E-06 1.4E-06 NA NA NA 0.0E+00
Benzo(a)pyrene 6.8E-08 NA 4.8E-05 4.8E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene 6.3E-09 NA 4.5E-06 4.5E-06 NA NA NA 0.0E+00
Dibenz(a,h)anthracene 3.3E-08 NA 3.7E-05 3.7E-05 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene 1.7E-08 NA 1.2E-05 1.2E-05 NA NA NA 0.0E+00
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 2.4E-06 NA 5.5E-05 5.7E-05
Arsenic 1.1E-06 NA 4.1E-07 1.5E-06 Skin, Vascular 7.3E-03 NA 2.6E-03 1.0E-02
Chromium 1.9E-07 NA 5.6E-06 5.8E-06 Not identified 3.8E-04 NA 1.1E-02 1.1E-02
Cobalt NA NA NA 0.0E+00 Thyroid 1.7E-03 NA 2.5E-04 2.0E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Selenium NA NA NA 0.0E+00 Whole Body 8.9E-04 NA 3.2E-04 1.2E-03
Chemical Total 2.1E-06 NA 1.2E-04 1.2E-04 1.1E-02 NA 2.1E-02 3.1E-02
Surface Water Total - Wet Event 1.2E-04 3.1E-02
TABLE 9.1.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at canal
level
(pre-aeration system Benzene NA 1.9E-08 NA 1.9E-08 Blood NA 2.4E-04 NA 2.4E-04
operation) Chloroform NA 1.4E-08 NA 1.4E-08 Liver NA 1.7E-05 NA 1.7E-05
Ethylbenzene NA 1.5E-08 NA 1.5E-08 Developmental NA 1.7E-05 NA 1.7E-05
Xylene, total NA NA NA 0.0E+00 Impaired motor coordination NA 7.8E-04 NA 7.8E-04
Naphthalene NA 1.9E-07 NA 1.9E-07 Nasal, Respiratory NA 5.4E-03 NA 5.4E-03
Chemical Total NA 2.4E-07 NA 2.4E-07 NA 6.4E-03 NA 6.4E-03
Ambient air at canal level Total - Pre-aeration system operation 2.4E-07 6.4E-03
Air Air
Ambient air at canal
level
(after aeration system Benzene NA 4.0E-08 NA 4.0E-08 Blood NA 5.0E-04 NA 5.0E-04
started) Chloroform NA 1.2E-08 NA 1.2E-08 Liver NA 1.6E-05 NA 1.6E-05
Ethylbenzene NA 1.4E-08 NA 1.4E-08 Developmental NA 1.6E-05 NA 1.6E-05
Xylene, total NA NA NA 0.0E+00 Impaired motor coordination NA 1.3E-03 NA 1.3E-03
Naphthalene NA 2.0E-07 NA 2.0E-07 Nasal, Respiratory NA 5.6E-03 NA 5.6E-03
Chemical Total NA 2.6E-07 NA 2.6E-07 NA 7.5E-03 NA 7.5E-03
Ambient air at canal level Total - After aeration system turned on 2.6E-07 7.5E-03
Receptor Total 3.2E-04 Receptor HI Total 2.1E-01
TABLE 9.1.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 5.1E-03
CNS - Central Nervous System Total Body Weight HI Across All Media = 1.4E-04
Receptor Total and target organ total includes sum of exposed and near shore sediment, maximum of dry event and wet event surface water, and maximum of air Total Developmental HI Across All Media = 1.7E-05
prior to areation system operation and after aeration system started Total Finger and Toe Nails HI Across All Media = 9.3E-02
Total Gastrointestinal HI Across All Media = 5.5E-03
Total Hair HI Across All Media = 7.2E-04
Total Kidney HI Across All Media = 1.1E-02
Total Immune HI Across All Media = 5.5E-04
Total Liver HI Across All Media = 1.4E-02
Total Nasal HI Across All Media = 5.6E-03
Total Nervous System HI Across All Media = 9.5E-03
Total Ocular HI Across All Media = 9.3E-02
Total Respiratory HI Across All Media = 5.6E-03
Total Skin HI Across All Media = 1.9E-02
Total Thyroid HI Across All Media = 5.1E-03
Total Vascular HI Across All Media = 1.9E-02
Total Whole Body HI Across All Media = 1.5E-03
TABLE 9.2.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Acenaphthene NA NA NA 0.0E+00 Liver 3.8E-04 NA 2.1E-03 2.5E-03
Benzo(a)anthracene (12-16)* 9.9E-07 NA 5.4E-06 6.4E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (16-18)* 1.7E-07 NA 9.0E-07 1.1E-06
Benzo(a)pyrene (12-16)* 8.4E-06 NA 4.6E-05 5.4E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (16-18)* 1.4E-06 NA 7.6E-06 9.0E-06
Benzo(b)fluoranthene (12-16)* 8.8E-07 NA 4.8E-06 5.7E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (16-18)* 1.5E-07 NA 8.0E-07 9.5E-07
Benzo(k)fluoranthene (12-16)* 5.1E-08 NA 2.8E-07 3.3E-07 NA NA NA 0.0E+00
Benzo(k)fluoranthene (16-18)* 8.4E-09 NA 4.6E-08 5.4E-08
Bis(2-ethylhexyl) phthalate 2.5E-09 NA 1.0E-08 1.3E-08 Increased Liver Weight 1.0E-04 NA 4.4E-04 5.4E-04
Chrysene (12-16)* 2.0E-08 NA 1.1E-07 1.3E-07 NA NA NA 0.0E+00
Chrysene (16-18)* 3.3E-09 NA 1.8E-08 2.1E-08
Dibenz(a,h)anthracene (12-16)* 4.8E-07 NA 2.6E-06 3.1E-06 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (16-18)* 8.1E-08 NA 4.4E-07 5.2E-07
Fluoranthene NA NA NA 0.0E+00 Kidney, Liver, Blood 7.7E-04 NA 4.2E-03 5.0E-03
Indeno(1,2,3-c,d)pyrene (12-16)* 3.8E-07 NA 2.1E-06 2.5E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (16-18)* 6.4E-08 NA 3.5E-07 4.1E-07
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 1.1E-05 NA 5.8E-05 6.9E-05
Pyrene NA NA NA 0.0E+00 Kidney 1.1E-03 NA 6.0E-03 7.1E-03
Dioxin-Like PCB TEQ 3.4E-08 NA 2.0E-07 2.3E-07 NA NA NA 0.0E+00
Nondioxin-Like PCB 5.6E-08 NA 3.3E-07 3.8E-07 NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.7E-02 NA 9.9E-02 1.2E-01
Aluminum NA NA NA 0.0E+00 Neurological 9.9E-04 NA 4.2E-04 1.4E-03
Arsenic 1.4E-07 NA 1.8E-07 3.3E-07 Skin, Vascular 3.7E-03 NA 4.7E-03 8.5E-03
Cadmium NA NA NA 0.0E+00 Proteinuria (Kidney) 6.0E-04 NA 1.0E-03 1.6E-03
Chromium (12-16)* 5.0E-07 NA 8.4E-06 8.9E-06 Not identified 1.9E-03 NA 3.3E-02 3.5E-02
Chromium (16-18)* 8.3E-08 NA 1.4E-06 1.5E-06
Cobalt NA NA NA 0.0E+00 Thyroid 2.7E-03 NA 1.1E-03 3.8E-03
Copper NA NA NA 0.0E+00 Gastrointestinal 5.5E-04 NA 2.3E-04 7.8E-04
Iron NA NA NA 0.0E+00 Gastrointestinal 3.6E-03 NA 1.5E-03 5.1E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Manganese NA NA NA 0.0E+00 CNS 1.4E-04 NA 8.6E-03 8.7E-03
Vanadium NA NA NA 0.0E+00 Hair 6.3E-04 NA 2.6E-04 8.9E-04
Chemical Total 1.4E-05 NA 8.2E-05 9.5E-05 3.4E-02 NA 1.6E-01 2.0E-01
Exposed Surface Sediment Total 9.5E-05 2.0E-01
TABLE 9.2.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Dry event) Benzene 1.7E-09 NA 9.6E-09 1.1E-08 Blood, Immune 9.1E-05 NA 5.1E-04 6.0E-04
Benzo(a)anthracene (12-16)* 5.4E-09 NA 2.0E-06 2.0E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (16-18)* 9.0E-10 NA 3.3E-07 3.3E-07
Benzo(a)pyrene (12-16)* 1.3E-07 NA 8.3E-05 8.3E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (16-18)* 2.2E-08 NA 1.4E-05 1.4E-05
Benzo(b)fluoranthene (12-16)* 6.1E-09 NA 3.8E-06 3.8E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (16-18)* 1.0E-09 NA 6.4E-07 6.4E-07
Bis(2-ethylhexyl) phthalate 4.8E-10 NA 2.1E-08 2.2E-08 Increased Liver Weight 2.0E-05 NA 8.8E-04 9.0E-04
Indeno(1,2,3-c,d)pyrene (12-16)* 2.7E-09 NA 1.7E-06 1.7E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (16-18)* 4.5E-10 NA 2.8E-07 2.8E-07
Arsenic 4.2E-07 NA 1.3E-07 5.5E-07 Skin, Vascular 1.1E-02 NA 3.4E-03 1.4E-02
Chromium (12-16)* 2.6E-07 NA 6.6E-06 6.9E-06 Not identified 1.0E-03 NA 2.6E-02 2.7E-02
Chromium (16-18)* 4.4E-08 NA 1.1E-06 1.1E-06
Copper 0.0E+00 NA NA 0.0E+00 Gastrointestinal 7.0E-04 NA 2.2E-04 9.2E-04
Selenium 0.0E+00 NA NA 0.0E+00 Whole Body 1.3E-03 NA 4.2E-04 1.8E-03
Chemical Total 9.0E-07 NA 1.1E-04 1.1E-04 1.4E-02 NA 3.1E-02 4.5E-02
Surface Water Total - Dry Event 1.1E-04 4.5E-02
TABLE 9.2.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Wet event) 1,4-dichlorobenzene 4.4E-11 NA 8.7E-10 9.2E-10 Liver 1.4E-06 NA 2.7E-05 2.8E-05
Benzene 6.4E-10 NA 3.6E-09 4.2E-09 Blood, Immune 3.4E-05 NA 1.9E-04 2.2E-04
Chloroform 2.4E-10 NA 7.1E-10 9.5E-10 Liver, Body Weight 9.1E-06 NA 2.7E-05 3.6E-05
Ethylbenzene 1.3E-10 NA 2.5E-09 2.6E-09 Liver, Kidney 1.4E-06 NA 2.7E-05 2.8E-05
Tetrachloroethylene(PCE) 1.8E-07 NA 3.2E-06 3.4E-06 Liver 4.0E-04 NA 6.9E-03 7.3E-03
Benzo(a)anthracene (12-16)* 2.1E-09 NA 7.6E-07 7.7E-07 NA NA NA 0.0E+00
Benzo(a)anthracene (16-18)* 3.5E-10 NA 4.3E-07 4.3E-07
Benzo(a)pyrene (12-16)* 4.2E-08 NA 2.6E-05 2.6E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (16-18)* 6.9E-09 NA 4.0E-06 4.0E-06
Benzo(b)fluoranthene (12-16)* 3.8E-09 NA 2.4E-06 2.4E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (16-18)* 6.4E-10 NA 3.3E-07 3.3E-07
Dibenz(a,h)anthracene (12-16)* 2.1E-08 NA 2.0E-05 2.0E-05 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (16-18)* 3.4E-09 NA 1.1E-05 1.1E-05
Indeno(1,2,3-c,d)pyrene (12-16)* 1.0E-08 NA 6.4E-06 6.4E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (16-18)* 1.7E-09 NA 2.5E-08 2.6E-08
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 3.0E-06 NA 5.9E-05 6.2E-05
Arsenic 3.5E-07 NA 1.1E-07 4.6E-07 Skin, Vascular 9.0E-03 NA 2.8E-03 1.2E-02
Chromium (12-16)* 1.2E-07 NA 3.0E-06 3.1E-06 Not identified 4.6E-04 NA 1.2E-02 1.2E-02
Chromium (16-18)* 2.0E-08 NA 5.0E-07 5.2E-07
Cobalt NA NA NA 0.0E+00 Thyroid 2.1E-03 NA 2.7E-04 2.4E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Selenium NA NA NA 0.0E+00 Whole Body 1.1E-03 NA 3.4E-04 1.4E-03
Chemical Total 7.6E-07 NA 7.7E-05 7.8E-05 1.3E-02 NA 2.2E-02 3.5E-02
Surface Water Total - Wet Event 7.8E-05 3.5E-02
TABLE 9.2.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at canal
level
(pre-aeration system Benzene NA 4.7E-09 NA 4.7E-09 Blood NA 2.4E-04 NA 2.4E-04
operation) Chloroform NA 3.4E-09 NA 3.4E-09 Liver NA 1.7E-05 NA 1.7E-05
Ethylbenzene NA 3.7E-09 NA 3.7E-09 Developmental NA 1.7E-05 NA 1.7E-05
Xylene, total NA NA NA 0.0E+00 Impaired motor coordination NA 7.8E-04 NA 7.8E-04
Naphthalene NA 4.7E-08 NA 4.7E-08 Nasal, Respiratory NA 5.4E-03 NA 5.4E-03
Chemical Total NA 5.9E-08 NA 5.9E-08 NA 6.4E-03 NA 6.4E-03
Ambient air at canal level Total - Pre-aeration system operation 5.9E-08 6.4E-03
Air Air
Ambient air at canal
level
(after aeration system Benzene NA 1.0E-08 NA 1.0E-08 Blood NA 5.0E-04 NA 5.0E-04
started) Chloroform NA 3.1E-09 NA 3.1E-09 Liver NA 1.6E-05 NA 1.6E-05
Ethylbenzene NA 3.5E-09 NA 3.5E-09 Developmental NA 1.6E-05 NA 1.6E-05
Xylene, total NA NA NA 0.0E+00 Impaired motor coordination NA 1.3E-03 NA 1.3E-03
Naphthalene NA 4.9E-08 NA 4.9E-08 Nasal, Respiratory NA 5.6E-03 NA 5.6E-03
Chemical Total NA 6.6E-08 NA 6.6E-08 NA 7.5E-03 NA 7.5E-03
Ambient air at canal level Total - After aeration system turned on 6.6E-08 7.5E-03
Receptor Total 2.1E-04 Receptor HI Total 2.5E-01
TABLE 9.2.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 6.1E-03
CNS - Central Nervous System Total Body Weight HI Across All Media = 1.7E-04
Receptor Total and target organ total includes sum of exposed and near shore sediment, maximum of dry event and wet event surface water, and maximum of air Total Developmental HI Across All Media = 1.7E-05
prior to areation system operation and after aeration system started Total Finger and Toe Nails HI Across All Media = 1.2E-01
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 3 used to adjust CSF for 12-16 year old for exposure duration of 4 years, Total Gastrointestinal HI Across All Media = 6.8E-03
ADAF of 1 used to adjust CSF for 16-18 year old for exposure duration of 2 years. Non-cancer calculations shown under 12-16 year old only, Total Hair HI Across All Media = 8.9E-04
as non-cancer calculations are not adjusted for MMOA. Total Kidney HI Across All Media = 1.4E-02
Total Immune HI Across All Media = 6.0E-04
Total Liver HI Across All Media = 1.6E-02
Total Nasal HI Across All Media = 5.6E-03
Total Nervous System HI Across All Media = 1.1E-02
Total Ocular HI Across All Media = 1.2E-01
Total Respiratory HI Across All Media = 5.6E-03
Total Skin HI Across All Media = 2.3E-02
Total Thyroid HI Across All Media = 6.2E-03
Total Vascular HI Across All Media = 2.3E-02
Total Whole Body HI Across All Media = 1.8E-03
TABLE 9.3.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Acenaphthene NA NA NA 0.0E+00 Liver 2.9E-03 NA 2.1E-03 5.0E-03
Benzo(a)anthracene (0-2)* 1.3E-05 NA 9.2E-06 2.2E-05 NA NA NA 0.0E+00
Benzo(a)anthracene (2-6)* 7.5E-06 NA 5.5E-06 1.3E-05
Benzo(a)pyrene (0-2)* 1.1E-04 NA 7.7E-05 1.8E-04 NA NA NA 0.0E+00
Benzo(a)pyrene (2-6)* 6.4E-05 NA 4.6E-05 1.1E-04
Benzo(b)fluoranthene (0-2)* 1.1E-05 NA 8.1E-06 1.9E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-6)* 6.7E-06 NA 4.9E-06 1.2E-05
Benzo(k)fluoranthene (0-2)* 6.4E-07 NA 4.7E-07 1.1E-06 NA NA NA 0.0E+00
Benzo(k)fluoranthene (2-6)* 3.8E-07 NA 2.8E-07 6.6E-07
Bis(2-ethylhexyl) phthalate 1.9E-08 NA 1.1E-08 3.0E-08 Increased Liver Weight 7.9E-04 NA 4.4E-04 1.2E-03
Chrysene (0-2)* 2.5E-07 NA 1.8E-07 4.3E-07 NA NA NA 0.0E+00
Chrysene (2-6)* 1.5E-07 NA 1.1E-07 2.6E-07
Dibenz(a,h)anthracene (0-2)* 6.1E-06 NA 4.5E-06 1.1E-05 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (2-6)* 3.7E-06 NA 2.7E-06 6.3E-06
Fluoranthene NA NA NA 0.0E+00 Kidney, Liver, Blood 5.9E-03 NA 4.3E-03 1.0E-02
Indeno(1,2,3-c,d)pyrene (0-2)* 4.8E-06 NA 3.5E-06 8.4E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-6)* 2.9E-06 NA 2.1E-06 5.0E-06
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 8.1E-05 NA 5.9E-05 1.4E-04
Pyrene NA NA NA 0.0E+00 Kidney 8.4E-03 NA 6.1E-03 1.4E-02
Dioxin-Like PCB TEQ 2.6E-07 NA 2.0E-07 4.6E-07 NA NA NA 0.0E+00
Nondioxin-Like PCB 4.3E-07 NA 3.3E-07 7.6E-07 NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.3E-01 NA 1.0E-01 2.3E-01
Aluminum NA NA NA 0.0E+00 Neurological 7.6E-03 NA 4.2E-04 8.0E-03
Arsenic 1.1E-06 NA 1.8E-07 1.3E-06 Skin, Vascular 2.8E-02 NA 4.8E-03 3.3E-02
Cadmium NA NA NA 0.0E+00 Proteinuria (Kidney) 4.6E-03 NA 1.0E-03 5.6E-03
Chromium 6.3E-06 NA 1.4E-05 2.1E-05 Not identified 1.5E-02 NA 3.3E-02 4.8E-02
3.8E-06 NA 8.5E-06 1.2E-05
Cobalt NA NA NA 0.0E+00 Thyroid 2.0E-02 NA 1.1E-03 2.2E-02
Copper NA NA NA 0.0E+00 Gastrointestinal 4.2E-03 NA 2.3E-04 4.4E-03
Iron NA NA NA 0.0E+00 Gastrointestinal 2.7E-02 NA 1.5E-03 2.9E-02
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Manganese NA NA NA 0.0E+00 CNS 1.1E-03 NA 8.7E-03 9.8E-03
Vanadium NA NA NA 0.0E+00 Hair 4.8E-03 NA 2.7E-04 5.0E-03
Chemical Total 2.4E-04 NA 1.9E-04 4.3E-04 2.6E-01 NA 1.6E-01 4.2E-01
Exposed Surface Sediment Total 4.3E-04 4.2E-01
TABLE 9.3.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Dry event) Benzene 6.5E-09 NA 1.5E-08 2.2E-08 Blood, Immune 3.5E-04 NA 8.1E-04 1.2E-03
Benzo(a)anthracene (0-2)* 3.4E-08 NA 5.2E-06 5.2E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (2-6)* 2.1E-08 NA 3.1E-06 3.1E-06
Benzo(a)pyrene (0-2)* 8.5E-07 NA 2.2E-04 2.2E-04 NA NA NA 0.0E+00
Benzo(a)pyrene (2-6)* 5.1E-07 NA 1.3E-04 1.3E-04
Benzo(b)fluoranthene (0-2)* 3.8E-08 NA 1.0E-05 1.0E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-6)* 2.3E-08 NA 6.1E-06 6.1E-06
Bis(2-ethylhexyl) phthalate 1.8E-09 NA 3.4E-08 3.5E-08 Increased Liver Weight 7.6E-05 NA 1.4E-03 1.5E-03
Indeno(1,2,3-c,d)pyrene (0-2)* 1.7E-08 NA 4.5E-06 4.5E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-6)* 1.0E-08 NA 2.7E-06 2.7E-06
Arsenic 1.6E-06 NA 2.1E-07 1.8E-06 Skin, Vascular 4.1E-02 NA 5.4E-03 4.6E-02
Chromium (0-2)* 1.7E-06 NA 1.8E-05 1.9E-05 Not identified 3.9E-03 NA 4.1E-02 4.5E-02
Chromium (2-6)* 1.0E-06 NA 1.1E-05 1.2E-05
Copper 0.0E+00 NA NA 0.0E+00 Gastrointestinal 2.7E-03 NA 3.5E-04 3.0E-03
Selenium 0.0E+00 NA NA 0.0E+00 Whole Body 5.1E-03 NA 6.7E-04 5.7E-03
Chemical Total 5.8E-06 NA 4.1E-04 4.2E-04 5.3E-02 NA 5.0E-02 1.0E-01
Surface Water Total - Dry Event 4.2E-04 1.0E-01
TABLE 9.3.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Wet event) 1,4-dichlorobenzene 1.7E-10 NA 1.4E-09 1.6E-09 Liver 5.2E-06 NA 4.3E-05 4.8E-05
Benzene 2.4E-09 NA 5.7E-09 8.1E-09 Blood, Immune 1.3E-04 NA 3.0E-04 4.3E-04
Chloroform 9.2E-10 NA 1.1E-09 2.0E-09 Liver, Body Weight 3.5E-05 NA 4.2E-05 7.7E-05
Ethylbenzene 5.1E-10 NA 4.0E-09 4.5E-09 Liver, Kidney 5.4E-06 NA 4.2E-05 4.8E-05
Tetrachloroethylene(PCE) 7.0E-07 NA 5.1E-06 5.8E-06 Liver 1.5E-03 NA 1.1E-02 1.2E-02
Benzo(a)anthracene (0-2)* 1.3E-08 NA 2.0E-06 2.0E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (2-6)* 8.0E-09 NA 1.2E-06 1.2E-06
Benzo(a)pyrene (0-2)* 2.6E-07 NA 6.9E-05 6.9E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (2-6)* 1.6E-07 NA 4.1E-05 4.1E-05
Benzo(b)fluoranthene (0-2)* 2.4E-08 NA 6.4E-06 6.4E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-6)* 1.5E-08 NA 3.8E-06 3.9E-06
Dibenz(a,h)anthracene (0-2)* 1.3E-07 NA 5.2E-05 5.2E-05 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (2-6)* 7.8E-08 NA 3.1E-05 3.1E-05
Indeno(1,2,3-c,d)pyrene (0-2)* 6.4E-08 NA 1.7E-05 1.7E-05 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-6)* 3.9E-08 NA 1.0E-05 1.0E-05
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 1.1E-05 NA 9.4E-05 1.1E-04
Arsenic 1.3E-06 NA 1.7E-07 1.5E-06 Skin, Vascular 3.4E-02 NA 4.5E-03 3.9E-02
Chromium (0-2)* 7.5E-07 NA 7.9E-06 8.7E-06 Not identified 1.8E-03 NA 1.9E-02 2.0E-02
Chromium (2-6)* 4.5E-07 NA 4.8E-06 5.2E-06
Cobalt NA NA NA 0.0E+00 Thyroid 8.0E-03 NA 4.2E-04 8.4E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Selenium NA NA NA 0.0E+00 Whole Body 4.1E-03 NA 5.5E-04 4.7E-03
Chemical Total 4.0E-06 NA 2.5E-04 2.6E-04 5.0E-02 NA 3.6E-02 8.5E-02
Surface Water Total - Wet Event 2.6E-04 8.5E-02
TABLE 9.3.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at canal
level
(pre-aeration system Benzene NA 4.7E-09 NA 4.7E-09 Blood NA 2.4E-04 NA 2.4E-04
operation) Chloroform NA 3.4E-09 NA 3.4E-09 Liver NA 1.7E-05 NA 1.7E-05
Ethylbenzene NA 3.7E-09 NA 3.7E-09 Developmental NA 1.7E-05 NA 1.7E-05
Xylene, total NA NA NA 0.0E+00 Impaired motor coordination NA 7.8E-04 NA 7.8E-04
Naphthalene NA 4.7E-08 NA 4.7E-08 Nasal, Respiratory NA 5.4E-03 NA 5.4E-03
Chemical Total NA 5.9E-08 NA 5.9E-08 NA 6.4E-03 NA 6.4E-03
Ambient air at canal level Total - Pre-aeration system operation 5.9E-08 6.4E-03
Air Air
Ambient air at canal
level
(after aeration system Benzene NA 1.0E-08 NA 1.0E-08 Blood NA 5.0E-04 NA 5.0E-04
started) Chloroform NA 3.1E-09 NA 3.1E-09 Liver NA 1.6E-05 NA 1.6E-05
Ethylbenzene NA 3.5E-09 NA 3.5E-09 Developmental NA 1.6E-05 NA 1.6E-05
Xylene, total NA NA NA 0.0E+00 Impaired motor coordination NA 1.3E-03 NA 1.3E-03
Naphthalene NA 4.9E-08 NA 4.9E-08 Nasal, Respiratory NA 5.6E-03 NA 5.6E-03
Chemical Total NA 6.6E-08 NA 6.6E-08 NA 7.5E-03 NA 7.5E-03
Ambient air at canal level Total - After aeration system turned on 6.6E-08 7.5E-03
Receptor Total 8.5E-04 Receptor HI Total 5.3E-01
TABLE 9.3.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 1.2E-02
CNS - Central Nervous System Total Body Weight HI Across All Media = 3.2E-04
Receptor Total and target organ total includes sum of exposed and near shore sediment, maximum of dry event and wet event surface water, and maximum of air Total Developmental HI Across All Media = 1.7E-05
prior to areation system operation and after aeration system started Total Finger and Toe Nails HI Across All Media = 2.3E-01
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used to adjust CSF for 0-2 year old for exposure duration of 2 years, Total Gastrointestinal HI Across All Media = 3.6E-02
ADAF of 3 used to adjust CSF for 2-6 year old for exposure duration of 4 years. Non-cancer calculations shown under 0-2 year old only, Total Hair HI Across All Media = 5.0E-03
as non-cancer calculations are not adjusted for MMOA. as non-cancer calculations are not adjusted for MMOA. Total Kidney HI Across All Media = 3.0E-02
Total Immune HI Across All Media = 1.2E-03
Total Liver HI Across All Media = 3.1E-02
Total Nasal HI Across All Media = 5.6E-03
Total Nervous System HI Across All Media = 1.9E-02
Total Ocular HI Across All Media = 2.3E-01
Total Respiratory HI Across All Media = 5.6E-03
Total Skin HI Across All Media = 8.0E-02
Total Thyroid HI Across All Media = 3.0E-02
Total Vascular HI Across All Media = 8.0E-02
Total Whole Body HI Across All Media = 5.7E-03
TABLE 9.4.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Industrial Worker
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at street
level
(pre-aeration system Benzene NA 2.4E-06 NA 2.4E-06 Blood NA 2.9E-02 NA 2.9E-02
operation) Chloroform NA 1.4E-06 NA 1.4E-06 Liver NA 1.7E-03 NA 1.7E-03
Ethylbenzene NA 6.7E-07 NA 6.7E-07 Developmental NA 7.5E-04 NA 7.5E-04
Naphthalene NA 1.1E-05 NA 1.1E-05 Nasal, Respiratory NA 3.0E-01 NA 3.0E-01
Chemical Total NA 1.5E-05 NA 1.5E-05 NA 3.3E-01 NA 3.3E-01
Ambient air at street level Total - Pre-aeration system operation 1.5E-05 3.3E-01
Air Air
Ambient air at canal
level
(after aeration system Benzene NA 2.1E-06 NA 2.1E-06 Blood NA 2.5E-02 NA 2.5E-02
started) Chloroform NA 1.9E-06 NA 1.9E-06 Liver NA 2.3E-03 NA 2.3E-03
Ethylbenzene NA 7.6E-07 NA 7.6E-07 Developmental NA 8.5E-04 NA 8.5E-04
Naphthalene NA 2.5E-05 NA 2.5E-05 Nasal, Respiratory NA 6.9E-01 NA 6.9E-01
Chemical Total NA 3.0E-05 NA 3.0E-05 NA 7.2E-01 NA 7.2E-01
Ambient air at street level Total - After aeration system turned on 3.0E-05 7.2E-01
TABLE 9.4.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Industrial Worker
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
2-methylnaphthalene NA NA NA 0.0E+00 Lung 3.2E-03 NA 2.7E-03 5.9E-03
Acenaphthene NA NA NA 0.0E+00 Liver 1.8E-04 NA 1.6E-04 3.4E-04
Benzo(a)anthracene 1.2E-06 NA 1.0E-06 2.2E-06 NA NA NA 0.0E+00
Benzo(a)pyrene 6.7E-06 NA 5.8E-06 1.2E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene 7.3E-07 NA 6.2E-07 1.4E-06 NA NA NA 0.0E+00
Benzo(k)fluoranthene 3.8E-08 NA 3.2E-08 7.0E-08 NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate 2.6E-09 NA 1.7E-09 4.3E-09 Increased Liver Weight 2.6E-05 NA 1.7E-05 4.3E-05
Chrysene 1.2E-08 NA 1.0E-08 2.2E-08 NA NA NA 0.0E+00
Dibenz(a,h)anthracene 5.0E-07 NA 4.3E-07 9.3E-07 NA NA NA 0.0E+00
Fluoranthene NA NA NA 0.0E+00 Kidney, Liver, Blood 1.6E-04 NA 1.4E-04 2.9E-04
Fluorene NA NA NA 0.0E+00 Blood 2.0E-04 NA 1.7E-04 3.8E-04
Indeno(1,2,3-c,d)pyrene 2.9E-07 NA 2.5E-07 5.4E-07 NA NA NA 0.0E+00
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 1.2E-03 NA 9.9E-04 2.1E-03
Pyrene NA NA NA 0.0E+00 Kidney 4.5E-04 NA 3.9E-04 8.4E-04
Dioxin-Like PCB TEQ 8.9E-08 NA 8.2E-08 1.7E-07 NA NA NA 0.0E+00
Nondioxin-Like PCB 1.6E-07 NA 1.5E-07 3.1E-07 NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.2E-02 NA 1.1E-02 2.2E-02
Aluminum NA NA NA 0.0E+00 Neurological 5.1E-04 NA 3.4E-05 5.5E-04
Arsenic 2.8E-07 NA 5.5E-08 3.3E-07 Skin, Vascular 1.7E-03 NA 3.4E-04 2.1E-03
Cadmium NA NA NA 0.0E+00 Proteinuria (Kidney) 3.5E-04 NA 9.3E-05 4.4E-04
Chromium 5.3E-07 NA 1.4E-06 1.9E-06 Not identified 9.9E-04 NA 2.6E-03 3.6E-03
Cobalt NA NA NA 0.0E+00 Thyroid 1.3E-03 NA 8.5E-05 1.4E-03
Copper NA NA NA 0.0E+00 Gastrointestinal 2.4E-04 NA 1.6E-05 2.6E-04
Iron NA NA NA 0.0E+00 Gastrointestinal 1.7E-03 NA 1.1E-04 1.8E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Manganese NA NA NA 0.0E+00 CNS 7.7E-05 NA 1.0E-06 7.8E-05
Vanadium NA NA NA 0.0E+00 Hair 3.2E-04 NA 2.1E-05 3.4E-04
Chemical Total 1.1E-05 NA 9.8E-06 2.0E-05 2.4E-02 NA 1.9E-02 4.3E-02
Overflow Surface Sediment Total 2.0E-05 4.3E-02
TABLE 9.4.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Industrial Worker
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water
Overflow Surface
Water
Canal Overflow -
Surface Water
1,4-dichlorobenzene 1.6E-10 NA 8.0E-10 9.6E-10 Liver 1.2E-06 NA 6.0E-06 7.1E-06
Benzene 5.1E-10 NA 4.1E-09 4.6E-09 Blood, Immune 2.9E-05 NA 5.2E-05 8.1E-05
Chloroform 1.9E-10 NA 7.4E-10 9.4E-10 Liver, Body Weight 7.9E-06 NA 6.7E-06 1.5E-05
Ethylbenzene 1.1E-10 NA 2.6E-09 2.7E-09 Liver, Kidney 1.2E-06 NA 6.6E-06 7.8E-06
Tetrachloroethylene(PCE) 1.5E-07 NA 2.8E-06 2.9E-06 Liver 3.4E-04 NA 1.5E-03 1.8E-03
Benzo(a)anthracene 8.4E-10 NA 2.9E-07 2.9E-07 NA NA NA 0.0E+00
Benzo(a)pyrene 1.7E-08 NA 9.6E-06 9.6E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene 1.5E-09 NA 9.0E-07 9.0E-07 NA NA NA 0.0E+00
Dibenz(a,h)anthracene 8.2E-09 NA 7.3E-06 7.3E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene 4.0E-09 NA 2.4E-06 2.4E-06 NA NA NA 0.0E+00
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 2.6E-06 NA 1.4E-05 1.6E-05
Arsenic 2.8E-07 NA 1.4E-07 4.2E-07 Skin, Vascular 7.8E-03 NA 8.9E-04 8.7E-03
Chromium 4.7E-08 NA 2.0E-06 2.0E-06 Not identified 4.0E-04 NA 3.7E-03 4.1E-03
Cobalt NA NA NA 0.0E+00 Thyroid 1.8E-03 NA 8.4E-05 1.9E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Selenium NA NA NA 0.0E+00 Whole Body 9.5E-04 NA 1.1E-04 1.1E-03
Chemical Total 5.0E-07 NA 2.5E-05 2.6E-05 1.1E-02 NA 6.3E-03 1.8E-02
Overflow Surface Water Total 2.6E-05 1.8E-02
Receptor Total 7.6E-05 Receptor HI Total 7.8E-01
TABLE 9.4.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Industrial Worker
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 3.0E-02
CNS - Central Nervous System Total Body Weight HI Across All Media = 2.2E-03
Receptor Total and target organ totals includes maximum between air prior to and after aeration system operation, and surface water, and sediment. Total Developmental HI Across All Media = 1.6E-03
Total Finger and Toe Nails HI Across All Media = 2.2E-02
Total Gastrointestinal HI Across All Media = 2.1E-03
Total Hair HI Across All Media = 3.4E-04
Total Kidney HI Across All Media = 1.6E-03
Total Immune HI Across All Media = 8.1E-05
Total Liver HI Across All Media = 4.8E-03
Total Lung HI Across All Media = 5.9E-03
Total Nasal HI Across All Media = 6.9E-01
Total Nervous System HI Across All Media = 6.3E-04
Total Ocular HI Across All Media = 2.2E-02
Total Respiratory HI Across All Media = 6.9E-01
Total Skin HI Across All Media = 1.1E-02
Total Thyroid HI Across All Media = 3.3E-03
Total Vascular HI Across All Media = 1.1E-02
Total Whole Body HI Across All Media = 1.1E-03
TABLE 9.5.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at street
level
(pre-aeration system Benzene NA NA NA Blood NA 4.0E-02 NA 4.0E-02
operation) Chloroform NA NA NA Liver NA 2.4E-03 NA 2.4E-03
Ethylbenzene NA NA NA Developmental NA 1.0E-03 NA 1.0E-03
Naphthalene NA NA NA Nasal, Respiratory NA 4.2E-01 NA 4.2E-01
Chemical Total NA NA NA NA 4.6E-01 NA 4.6E-01
Ambient air at street level Total - Pre-aeration system operation 4.6E-01
Air Air
Ambient air at canal
level
(after aeration system Benzene NA NA NA Blood NA 3.5E-02 NA 3.5E-02
started) Chloroform NA NA NA Liver NA 3.2E-03 NA 3.2E-03
Ethylbenzene NA NA NA Developmental NA 1.2E-03 NA 1.2E-03
Naphthalene NA NA NA Nasal, Respiratory NA 9.7E-01 NA 9.7E-01
Chemical Total NA NA NA NA 1.0E+00 NA 1.0E+00
Ambient air at street level Total - After aeration system turned on 1.0E+00
TABLE 9.5.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal 2-methylnaphthalene NA NA NA Lung 3.2E-03 NA 4.7E-03 7.8E-03
Acenaphthene NA NA NA Liver 1.8E-04 NA 2.7E-04 4.5E-04
Benzo(a)anthracene NA NA NA NA NA NA 0.0E+00
Benzo(a)pyrene NA NA NA NA NA NA 0.0E+00
Benzo(b)fluoranthene NA NA NA NA NA NA 0.0E+00
Benzo(k)fluoranthene NA NA NA NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate NA NA NA Increased Liver Weight 2.6E-05 NA 2.9E-05 5.5E-05
Chrysene NA NA NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene NA NA NA NA NA NA 0.0E+00
Fluoranthene NA NA NA Kidney, Liver, Blood 1.6E-04 NA 2.3E-04 3.9E-04
Fluorene NA NA NA Blood 2.0E-04 NA 3.0E-04 5.0E-04
Indeno(1,2,3-c,d)pyrene NA NA NA NA NA NA 0.0E+00
Naphthalene NA NA NA Decreased Body Weight 1.2E-03 NA 1.7E-03 2.9E-03
Pyrene NA NA NA Kidney 4.5E-04 NA 6.7E-04 1.1E-03
Dioxin-Like PCB TEQ NA NA NA NA NA NA 0.0E+00
Nondioxin-Like PCB NA NA NA NA NA NA 0.0E+00
Total PCB NA NA NA Ocular, Finger and Toe Nails 1.2E-02 NA 1.9E-02 3.0E-02
Aluminum NA NA NA Neurological 5.1E-04 NA 5.9E-05 5.7E-04
Arsenic NA NA NA Skin, Vascular 1.7E-03 NA 5.9E-04 2.3E-03
Cadmium NA NA NA Proteinuria (Kidney) 3.5E-04 NA 1.6E-04 5.1E-04
Chromium NA NA NA Not identified 9.9E-04 NA 4.5E-03 5.5E-03
Cobalt NA NA NA Thyroid 1.3E-03 NA 1.5E-04 1.4E-03
Copper NA NA NA Gastrointestinal 2.4E-04 NA 2.8E-05 2.7E-04
Iron NA NA NA Gastrointestinal 1.7E-03 NA 1.9E-04 1.9E-03
Lead NA NA NA NA NA NA 0.0E+00
Manganese NA NA NA CNS 7.7E-05 NA 1.8E-06 7.9E-05
Vanadium NA NA NA Hair 3.2E-04 NA 3.7E-05 3.6E-04
Chemical Total NA NA NA 2.4E-02 NA 3.2E-02 5.6E-02
Overflow Surface Sediment Total 5.6E-02
TABLE 9.5.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water
Overflow Surface
Water
Canal Overflow -
Surface Water
1,4-dichlorobenzene NA NA NA Liver 3.9E-07 NA 2.7E-06 3.1E-06
Benzene NA NA NA Blood, Immune 9.6E-06 NA 1.9E-05 2.9E-05
Chloroform NA NA NA Liver, Body Weight 2.6E-06 NA 2.7E-06 5.3E-06
Ethylbenzene NA NA NA Liver, Kidney 4.0E-07 NA 2.7E-06 3.1E-06
Tetrachloroethylene(PCE) NA NA NA Liver 1.1E-04 NA 7.0E-04 8.1E-04
Benzo(a)anthracene NA NA NA NA NA NA 0.0E+00
Benzo(a)pyrene NA NA NA NA NA NA 0.0E+00
Benzo(b)fluoranthene NA NA NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene NA NA NA NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene NA NA NA NA NA NA 0.0E+00
Naphthalene NA NA NA Decreased Body Weight 8.3E-07 NA 6.0E-06 6.8E-06
Arsenic NA NA NA Skin, Vascular 2.5E-03 NA 2.9E-04 2.8E-03
Chromium NA NA NA Not identified 1.3E-04 NA 1.2E-03 1.3E-03
Cobalt NA NA NA Thyroid 6.0E-04 NA 2.7E-05 6.2E-04
Lead NA NA NA NA NA NA 0.0E+00
Selenium NA NA NA Whole Body 3.1E-04 NA 3.5E-05 3.4E-04
Chemical Total NA NA NA 3.7E-03 NA 2.3E-03 6.0E-03
Overflow Surface Water Total 6.0E-03
Receptor Total Receptor HI Total 1.1E+00
TABLE 9.5.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 4.1E-02
CNS - Central Nervous System Total Body Weight HI Across All Media = 2.9E-03
Receptor Total and target organ totals includes maximum between air prior to and after aeration system operation, and surface water, and sediment. Total Developmental HI Across All Media = 2.2E-03
Total Finger and Toe Nails HI Across All Media = 3.0E-02
Total Gastrointestinal HI Across All Media = 2.2E-03
Total Hair HI Across All Media = 3.6E-04
Total Kidney HI Across All Media = 2.0E-03
Total Immune HI Across All Media = 2.9E-05
Total Liver HI Across All Media = 5.0E-03
Total Lung HI Across All Media = 7.8E-03
Total Nasal HI Across All Media = 9.7E-01
Total Nervous System HI Across All Media = 6.5E-04
Total Ocular HI Across All Media = 3.0E-02
Total Respiratory HI Across All Media = 9.7E-01
Total Skin HI Across All Media = 5.1E-03
Total Thyroid HI Across All Media = 2.1E-03
Total Vascular HI Across All Media = 5.1E-03
Total Whole Body HI Across All Media = 3.4E-04
TABLE 9.6.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at street
level
(pre-aeration system Benzene NA NA NA Blood NA 4.0E-02 NA 4.0E-02
operation) Chloroform NA NA NA Liver NA 2.4E-03 NA 2.4E-03
Ethylbenzene NA NA NA Developmental NA 1.0E-03 NA 1.0E-03
Naphthalene NA NA NA Nasal, Respiratory NA 4.2E-01 NA 4.2E-01
Chemical Total NA NA NA NA 4.6E-01 NA 4.6E-01
Ambient air at street level Total - Pre-aeration system operation 4.6E-01
Air Air
Ambient air at canal
level
(after aeration system Benzene NA NA NA Blood NA 3.5E-02 NA 3.5E-02
started) Chloroform NA NA NA Liver NA 3.2E-03 NA 3.2E-03
Ethylbenzene NA NA NA Developmental NA 1.2E-03 NA 1.2E-03
Naphthalene NA NA NA Nasal, Respiratory NA 9.7E-01 NA 9.7E-01
Chemical Total NA NA NA NA 1.0E+00 NA 1.0E+00
Ambient air at street level Total - After aeration system turned on 1.0E+00
TABLE 9.6.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal 2-methylnaphthalene NA NA NA Lung 2.9E-02 NA 1.1E-02 4.0E-02
Acenaphthene NA NA NA Liver 1.7E-03 NA 6.2E-04 2.3E-03
Benzo(a)anthracene NA NA NA NA NA NA 0.0E+00
Benzo(a)pyrene NA NA NA NA NA NA 0.0E+00
Benzo(b)fluoranthene NA NA NA NA NA NA 0.0E+00
Benzo(k)fluoranthene NA NA NA NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate NA NA NA Increased Liver Weight 2.4E-04 NA 6.7E-05 3.1E-04
Chrysene NA NA NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene NA NA NA NA NA NA 0.0E+00
Fluoranthene NA NA NA Kidney, Liver, Blood 1.5E-03 NA 5.4E-04 2.0E-03
Fluorene NA NA NA Blood 1.9E-03 NA 6.9E-04 2.6E-03
Indeno(1,2,3-c,d)pyrene NA NA NA NA NA NA 0.0E+00
Naphthalene NA NA NA Decreased Body Weight 1.1E-02 NA 3.9E-03 1.5E-02
Pyrene NA NA NA Kidney 4.2E-03 NA 1.5E-03 5.8E-03
Dioxin-Like PCB TEQ NA NA NA NA NA NA 0.0E+00
Nondioxin-Like PCB NA NA NA NA NA NA 0.0E+00
Total PCB NA NA NA Ocular, Finger and Toe Nails 1.1E-01 NA 4.3E-02 1.5E-01
Aluminum NA NA NA Neurological 4.8E-03 NA 1.3E-04 4.9E-03
Arsenic NA NA NA Skin, Vascular 1.6E-02 NA 1.4E-03 1.7E-02
Cadmium NA NA NA Proteinuria (Kidney) 3.3E-03 NA 3.7E-04 3.7E-03
Chromium NA NA NA Not identified 9.3E-03 NA 1.0E-02 2.0E-02
Cobalt NA NA NA Thyroid 1.2E-02 NA 3.4E-04 1.2E-02
Copper NA NA NA Gastrointestinal 2.3E-03 NA 6.3E-05 2.3E-03
Iron NA NA NA Gastrointestinal 1.6E-02 NA 4.4E-04 1.6E-02
Lead NA NA NA NA NA NA 0.0E+00
Manganese NA NA NA CNS 7.2E-04 NA 4.0E-06 7.2E-04
Vanadium NA NA NA Hair 3.0E-03 NA 8.5E-05 3.1E-03
Chemical Total NA NA NA 2.3E-01 NA 7.4E-02 3.0E-01
Overflow Surface Sediment Total 3.0E-01
TABLE 9.6.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water
Overflow Surface
Water
Canal Overflow -
Surface Water
1,4-dichlorobenzene NA NA NA Liver 1.8E-06 NA 6.3E-06 8.1E-06
Benzene NA NA NA Blood, Immune 4.5E-05 NA 4.4E-05 8.9E-05
Chloroform NA NA NA Liver, Body Weight 1.2E-05 NA 6.2E-06 1.8E-05
Ethylbenzene NA NA NA Liver, Kidney 1.9E-06 NA 6.2E-06 8.1E-06
Tetrachloroethylene(PCE) NA NA NA Liver 5.2E-04 NA 1.6E-03 2.1E-03
Benzo(a)anthracene NA NA NA NA NA NA 0.0E+00
Benzo(a)pyrene NA NA NA NA NA NA 0.0E+00
Benzo(b)fluoranthene NA NA NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene NA NA NA NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene NA NA NA NA NA NA 0.0E+00
Naphthalene NA NA NA Decreased Body Weight 3.9E-06 NA 1.4E-05 1.8E-05
Arsenic NA NA NA Skin, Vascular 1.2E-02 NA 6.6E-04 1.2E-02
Chromium NA NA NA Not identified 6.1E-04 NA 2.7E-03 3.3E-03
Cobalt NA NA NA Thyroid 2.8E-03 NA 6.2E-05 2.8E-03
Lead NA NA NA NA NA NA 0.0E+00
Selenium NA NA NA Whole Body 1.4E-03 NA 8.0E-05 1.5E-03
Chemical Total NA NA NA 1.7E-02 NA 5.2E-03 2.2E-02
Overflow Surface Water Total 2.2E-02
Receptor Total Receptor HI Total 1.3E+00
TABLE 9.6.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 4.5E-02
CNS - Central Nervous System Total Body Weight HI Across All Media = 1.5E-02
Receptor Total and target organ totals includes maximum between air prior to and after aeration system operation, and surface water, and sediment. Total Developmental HI Across All Media = 2.2E-03
Total Finger and Toe Nails HI Across All Media = 1.5E-01
Total Gastrointestinal HI Across All Media = 1.9E-02
Total Hair HI Across All Media = 3.1E-03
Total Kidney HI Across All Media = 1.1E-02
Total Immune HI Across All Media = 8.9E-05
Total Liver HI Across All Media = 1.0E-02
Total Lung HI Across All Media = 4.0E-02
Total Nasal HI Across All Media = 9.7E-01
Total Nervous System HI Across All Media = 5.7E-03
Total Ocular HI Across All Media = 1.5E-01
Total Respiratory HI Across All Media = 9.7E-01
Total Skin HI Across All Media = 3.0E-02
Total Thyroid HI Across All Media = 1.5E-02
Total Vascular HI Across All Media = 3.0E-02
Total Whole Body HI Across All Media = 1.5E-03
TABLE 9.7.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at street
level
(pre-aeration system Benzene NA 2.9E-06 NA 2.9E-06 Blood NA NA NA
operation) Chloroform NA 1.7E-06 NA 1.7E-06 Liver NA NA NA
Ethylbenzene NA 8.0E-07 NA 8.0E-07 Developmental NA NA NA
Naphthalene NA 1.3E-05 NA 1.3E-05 Nasal, Respiratory NA NA NA
Chemical Total NA 1.8E-05 NA 1.8E-05 NA NA NA
Ambient air at street level Total - Pre-aeration system operation 1.8E-05
Air Air
Ambient air at canal
level
(after aeration system Benzene NA 2.5E-06 NA 2.5E-06 Blood NA NA NA
started) Chloroform NA 2.2E-06 NA 2.2E-06 Liver NA NA NA
Ethylbenzene NA 9.1E-07 NA 9.1E-07 Developmental NA NA NA
Naphthalene NA 3.0E-05 NA 3.0E-05 Nasal, Respiratory NA NA NA
Chemical Total NA 3.6E-05 NA 3.6E-05 NA NA NA
Ambient air at street level Total - After aeration system turned on 3.6E-05
TABLE 9.7.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal 2-methylnaphthalene NA NA NA 0.0E+00 Lung NA NA NA
Acenaphthene NA NA NA 0.0E+00 Liver NA NA NA
Benzo(a)anthracene11.6E-05 NA 8.2E-06 2.4E-05 NA NA NA
Benzo(a)pyrene19.2E-05 NA 4.7E-05 1.4E-04 NA NA NA
Benzo(b)fluoranthene11.0E-05 NA 5.1E-06 1.5E-05 NA NA NA
Benzo(k)fluoranthene15.2E-07 NA 2.6E-07 7.8E-07 NA NA NA
Bis(2-ethylhexyl) phthalate 8.2E-09 NA 4.4E-09 1.3E-08 Increased Liver Weight NA NA NA
Chrysene11.6E-07 NA 8.1E-08 2.4E-07 NA NA NA
Dibenz(a,h)anthracene16.9E-06 NA 3.5E-06 1.0E-05 NA NA NA
Fluoranthene NA NA NA 0.0E+00 Kidney, Liver, Blood NA NA NA
Fluorene NA NA NA 0.0E+00 Blood NA NA NA
Indeno(1,2,3-c,d)pyrene14.0E-06 NA 2.0E-06 6.0E-06 NA NA NA
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight NA NA NA
Pyrene NA NA NA 0.0E+00 Kidney NA NA NA
Dioxin-Like PCB TEQ 2.8E-07 NA 2.1E-07 5.0E-07 NA NA NA
Nondioxin-Like PCB 5.2E-07 NA 3.9E-07 9.1E-07 NA NA NA
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails NA NA NA
Aluminum NA NA NA 0.0E+00 Neurological NA NA NA
Arsenic 8.9E-07 NA 1.4E-07 1.0E-06 Skin, Vascular NA NA NA
Cadmium NA NA NA 0.0E+00 Proteinuria (Kidney) NA NA NA
Chromium17.3E-08 NA 1.1E-06 1.2E-06 Not identified NA NA NA
Cobalt NA NA NA 0.0E+00 Thyroid NA NA NA
Copper NA NA NA 0.0E+00 Gastrointestinal NA NA NA
Iron NA NA NA 0.0E+00 Gastrointestinal NA NA NA
Lead NA NA NA 0.0E+00 NA NA NA
Manganese NA NA NA 0.0E+00 CNS NA NA NA
Vanadium NA NA NA 0.0E+00 Hair NA NA NA
Chemical Total 1.3E-04 NA 6.8E-05 2.0E-04 NA NA NA
Overflow Surface Sediment Total 2.0E-04
TABLE 9.7.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water
Overflow Surface
Water
Canal Overflow -
Surface Water
1,4-dichlorobenzene 1.1E-10 NA 5.6E-10 6.7E-10 Liver NA NA NA
Benzene 1.6E-09 NA 2.3E-09 3.9E-09 Blood, Immune NA NA NA
Chloroform 5.9E-10 NA 4.5E-10 1.0E-09 Liver, Body Weight NA NA NA
Ethylbenzene 3.2E-10 NA 1.6E-09 1.9E-09 Liver, Kidney NA NA NA
Tetrachloroethylene(PCE) 4.5E-07 NA 2.0E-06 2.5E-06 Liver NA NA NA
Benzo(a)anthracene19.6E-09 NA 7.6E-07 7.7E-07 NA NA NA
Benzo(a)pyrene11.9E-07 NA 2.6E-05 2.6E-05 NA NA NA
Benzo(b)fluoranthene11.7E-08 NA 2.4E-06 2.4E-06 NA NA NA
Dibenz(a,h)anthracene19.3E-08 NA 2.0E-05 2.0E-05 NA NA NA
Indeno(1,2,3-c,d)pyrene14.6E-08 NA 6.4E-06 6.4E-06 NA NA NA
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight NA NA NA
Arsenic 8.4E-07 NA 7.0E-08 9.1E-07 Skin, Vascular NA NA NA
Chromium15.4E-07 NA 3.6E-06 4.2E-06 Not identified NA NA NA
Cobalt NA NA NA 0.0E+00 Thyroid NA NA NA
Lead NA NA NA 0.0E+00 NA NA NA
Selenium NA NA NA 0.0E+00 Whole Body NA NA NA
Chemical Total 2.2E-06 NA 6.1E-05 6.3E-05 NA NA NA
Overflow Surface Water Total 6.3E-05
Receptor Total 3.0E-04 Receptor HI Total
Receptor Total includes maximum between air prior to and after aeration system operation, and surface water, and sediment.
1. Constituent acts via a mutagenic mode of action (MMOA). See Table 7.7.RME Supplement A for calculation of intake and cancer risk following MMOA method.
TABLE 9.8.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
p,p'-DDE 2.4E-07 NA NA 2.4E-07 NA NA NA NA 0.0E+00
p,p'-DDT 2.0E-07 NA NA 2.0E-07 Liver 3.4E-03 NA NA 3.4E-03
Dioxin-Like PCB TEQ 4.0E-05 NA NA 4.0E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 4.9E-05 NA NA 4.9E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 3.8E+00 NA NA 3.8E+00
Arsenic 6.1E-06 NA NA 6.1E-06 Skin, Vascular 4.0E-02 NA NA 4.0E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.5E-01 NA NA 3.5E-01
Selenium NA NA NA 0.0E+00 Whole Body 4.2E-02 NA NA 4.2E-02
Chemical Total 9.6E-05 NA NA 9.6E-05 4.2E+00 NA NA 4.2E+00
Striped Bass in Gowanus Canal Total 9.6E-05 4.2E+00
Surface
Water/Sediment
Fish and Crab
Tissue
White Perch in
Gowanus Canal
Dioxin-Like PCB TEQ 9.9E-06 NA NA 9.9E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 9.6E-06 NA NA 9.6E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 7.7E-01 NA NA 7.7E-01
Mercury NA NA NA 0.0E+00 Developmental Neurological 6.4E-02 NA NA 6.4E-02
Selenium NA NA NA 0.0E+00 Whole Body 9.4E-03 NA NA 9.4E-03
Chemical Total 2.0E-05 NA NA 2.0E-05 8.5E-01 NA NA 8.5E-01
White Perch in Gowanus Canal Total 2.0E-05 8.5E-01
TABLE 9.8.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
alpha-Chlordane 4.3E-07 NA NA 4.3E-07 Liver 7.2E-03 NA NA 7.2E-03
Dieldrin 1.5E-05 NA NA 1.5E-05 Liver 5.6E-02 NA NA 5.6E-02
gamma-Chlordane 2.5E-07 NA NA 2.5E-07 Liver 4.2E-03 NA NA 4.2E-03
p,p'-DDD 5.1E-07 NA NA 5.1E-07 NA NA NA NA 0.0E+00
p,p'-DDE 4.8E-07 NA NA 4.8E-07 NA NA NA NA 0.0E+00
p,p'-DDT 9.0E-07 NA NA 9.0E-07 Liver 1.5E-02 NA NA 1.5E-02
Dioxin-Like PCB TEQ 1.2E-04 NA NA 1.2E-04 NA NA NA NA 0.0E+00
Nondioxin-Like 1.4E-04 NA NA 1.4E-04 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.1E+01 NA NA 1.1E+01
Arsenic 4.2E-06 NA NA 4.2E-06 Skin, Vascular 2.7E-02 NA NA 2.7E-02
Chromium 1.9E-05 NA NA 1.9E-05 Not identified 3.6E-02 NA NA 3.6E-02
Copper NA NA NA 0.0E+00 Gastrointestinal 3.0E-02 NA NA 3.0E-02
Cyanide, total NA NA NA 0.0E+00 Weight Loss, Thyroid 2.5E-02 NA NA 2.5E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 4.2E-01 NA NA 4.2E-01
Selenium NA NA NA 0.0E+00 Whole Body 4.6E-02 NA NA 4.6E-02
Chemical Total 3.0E-04 NA NA 3.0E-04 1.2E+01 NA NA 1.2E+01
Eel in Gowanus Canal Total 3.0E-04 1.2E+01
TABLE 9.8.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Benzo(a)anthracene 6.3E-07 NA NA 6.3E-07 NA NA NA NA 0.0E+00
Benzo(a)pyrene 9.7E-06 NA NA 9.7E-06 NA NA NA NA 0.0E+00
Benzo(b)fluoranthene 5.3E-07 NA NA 5.3E-07 NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene 3.2E-06 NA NA 3.2E-06 NA NA NA NA 0.0E+00
Indeno(1,2,3-cd)pyrene 8.1E-07 NA NA 8.1E-07 NA NA NA NA 0.0E+00
Dioxin-Like PCB TEQ 8.9E-05 NA NA 8.9E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 3.2E-05 NA NA 3.2E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 2.7E+00 NA NA 2.7E+00
Arsenic 2.2E-05 NA NA 2.2E-05 Skin, Vascular 1.4E-01 NA NA 1.4E-01
Copper NA NA NA 0.0E+00 Gastrointestinal 8.4E-02 NA NA 8.4E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 4.1E-01 NA NA 4.1E-01
Chemical Total 1.6E-04 NA NA 1.6E-04 3.4E+00 NA NA 3.4E+00
Crab in Gowanus Canal Total 1.6E-04 3.4E+00
Receptor Total - Fish 4.2E-04 Receptor HI Total - Fiish 1.7E+01
Receptor Total - Blue Crab 1.6E-04 Receptor HI Total - Blue Crab 3.4E+00
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Body Weight HI Across All Media = 2.5E-02 Total Developmental HI Across All Media = 4.1E-01
Total Developmental HI Across All Media = 8.4E-01 Total Finger and Toe Nails HI Across All Media = 2.7E+00
Total Finger and Toe Nails HI Across All Media = 1.6E+01 Total Gastrointestinal HI Across All Media = 8.4E-02
Total Gastrointestinal HI Across All Media = 3.0E-02 Total Neurological HI Across All Media = 4.1E-01
Total Liver HI Across All Media = 8.6E-02 Total Ocular HI Across All Media = 2.7E+00
Total Neurological HI Across All Media = 8.4E-01 Total Skin HI Across All Media = 1.4E-01
Total Ocular HI Across All Media = 1.6E+01 Total Vascular HI Across All Media = 1.4E-01
Total Skin HI Across All Media = 6.7E-02
Total Thyroid HI Across All Media = 2.5E-02
Total Vascular HI Across All Media = 6.7E-02
Total Whole Body HI Across All Media = 9.7E-02
TABLE 9.9.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
p,p'-DDE 4.9E-08 NA NA 4.9E-08 NA NA NA NA 0.0E+00
p,p'-DDT 3.9E-08 NA NA 3.9E-08 Liver 2.7E-03 NA NA 2.7E-03
Dioxin-Like PCB TEQ 8.1E-06 NA NA 8.1E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 9.8E-06 NA NA 9.8E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 3.0E+00 NA NA 3.0E+00
Arsenic 1.2E-06 NA NA 1.2E-06 Skin, Vascular 3.2E-02 NA NA 3.2E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 2.8E-01 NA NA 2.8E-01
Selenium NA NA NA 0.0E+00 Whole Body 3.4E-02 NA NA 3.4E-02
Chemical Total 1.9E-05 NA NA 1.9E-05 3.4E+00 NA NA 3.4E+00
Striped Bass in Gowanus Canal Total 1.9E-05 3.4E+00
Surface
Water/Sediment
Fish and Crab
Tissue
White Perch in
Gowanus Canal
Dioxin-Like PCB TEQ 2.1E-06 NA NA 2.1E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 2.0E-06 NA NA 2.0E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 6.2E-01 NA NA 6.2E-01
Mercury NA NA NA 0.0E+00 Developmental Neurological 5.1E-02 NA NA 5.1E-02
Selenium NA NA NA 0.0E+00 Whole Body 7.5E-03 NA NA 7.5E-03
Chemical Total 4.1E-06 NA NA 4.1E-06 6.8E-01 NA NA 6.8E-01
White Perch in Gowanus Canal Total 4.1E-06 6.8E-01
TABLE 9.9.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
alpha-Chlordane 8.7E-08 NA NA 8.7E-08 Liver 5.8E-03 NA NA 5.8E-03
Dieldrin 3.1E-06 NA NA 3.1E-06 Liver 4.5E-02 NA NA 4.5E-02
gamma-Chlordane 5.1E-08 NA NA 5.1E-08 Liver 3.4E-03 NA NA 3.4E-03
p,p'-DDD 1.0E-07 NA NA 1.0E-07 NA NA NA NA 0.0E+00
p,p'-DDE 9.6E-08 NA NA 9.6E-08 NA NA NA NA 0.0E+00
p,p'-DDT 1.8E-07 NA NA 1.8E-07 Liver 1.2E-02 NA NA 1.2E-02
Dioxin-Like PCB TEQ 2.5E-05 NA NA 2.5E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 2.7E-05 NA NA 2.7E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 8.9E+00 NA NA 8.9E+00
Arsenic 8.4E-07 NA NA 8.4E-07 Skin, Vascular 2.2E-02 NA NA 2.2E-02
Chromium (12-16)* 7.5E-06 NA NA 7.5E-06 Not identified 2.9E-02 NA NA 2.9E-02
Chromium (16-18)* 1.3E-06 NA NA 1.3E-06
Copper NA NA NA 0.0E+00 Gastrointestinal 2.4E-02 NA NA 2.4E-02
Cyanide, total NA NA NA 0.0E+00 Weight Loss, Thyroid 2.0E-02 NA NA 2.0E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.4E-01 NA NA 3.4E-01
Selenium NA NA NA 0.0E+00 Whole Body 3.7E-02 NA NA 3.7E-02
Chemical Total 6.5E-05 NA NA 6.5E-05 9.4E+00 NA NA 9.4E+00
Eel in Gowanus Canal Total 6.5E-05 9.4E+00
TABLE 9.9.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Benzo(a)anthracene (12-16)* 2.5E-07 NA NA 2.5E-07 NA NA NA NA 0.0E+00
Benzo(a)anthracene (16-18)* 4.2E-08 NA NA 4.2E-08
Benzo(a)pyrene (12-16)* 3.9E-06 NA NA 3.9E-06 NA NA NA NA 0.0E+00
Benzo(a)pyrene (16-18)* 6.5E-07 NA NA 6.5E-07
Benzo(b)fluoranthene (12-16)* 2.1E-07 NA NA 2.1E-07 NA NA NA NA 0.0E+00
Benzo(b)fluoranthene (16-18)* 3.5E-08 NA NA 3.5E-08
Dibenz(a,h)anthracene (12-16)* 1.3E-06 NA NA 1.3E-06 NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene (16-18)* 2.2E-07 NA NA 2.2E-07
Indeno(1,2,3-cd)pyrene (12-16)* 3.3E-07 NA NA 3.3E-07 NA NA NA NA 0.0E+00
Indeno(1,2,3-cd)pyrene (16-18)* 5.4E-08 NA NA 5.4E-08
Dioxin-Like PCB TEQ 1.8E-05 NA NA 1.8E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 6.5E-06 NA NA 6.5E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 2.2E+00 NA NA 2.2E+00
Arsenic 4.4E-06 NA NA 4.4E-06 Skin, Vascular 1.1E-01 NA NA 1.1E-01
Copper NA NA NA 0.0E+00 Gastrointestinal 6.7E-02 NA NA 6.7E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.3E-01 NA NA 3.3E-01
Chemical Total 3.6E-05 NA NA 3.6E-05 2.7E+00 NA NA 2.7E+00
Crab in Gowanus Canal Total 3.6E-05 2.7E+00
Receptor Total - Fish 8.9E-05 Receptor HI Total - Fiish 1.3E+01
Receptor Total - Blue Crab 3.6E-05 Receptor HI Total - Blue Crab 2.7E+00
TABLE 9.9.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Body Weight HI Across All Media = 2.0E-02 Total Developmental HI Across All Media = 3.3E-01
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 3 Total Developmental HI Across All Media = 6.7E-01 Total Finger and Toe Nails HI Across All Media = 2.2E+00
used to adjust CSF for 12-16 year old for exposure duration of 4 years, Total Finger and Toe Nails HI Across All Media = 1.3E+01 Total Gastrointestinal HI Across All Media = 6.7E-02
ADAF of 1 used to adjust CSF for 16-18 year old for exposure duration Total Gastrointestinal HI Across All Media = 2.4E-02 Total Neurological HI Across All Media = 3.3E-01
of 2 years. Non-cancer calculations shown under 12-16 year old only, Total Liver HI Across All Media = 6.9E-02 Total Ocular HI Across All Media = 2.2E+00
as non-cancer calculations are not adjusted for MMOA. Total Neurological HI Across All Media = 6.7E-01 Total Skin HI Across All Media = 1.1E-01
Total Ocular HI Across All Media = 1.3E+01 Total Vascular HI Across All Media = 1.1E-01
Total Skin HI Across All Media = 5.4E-02
Total Thyroid HI Across All Media = 2.0E-02
Total Vascular HI Across All Media = 5.4E-02
Total Whole Body HI Across All Media = 7.8E-02
TABLE 9.10.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
p,p'-DDE 9.9E-08 NA NA 9.9E-08 NA NA NA NA 0.0E+00
p,p'-DDT 7.9E-08 NA NA 7.9E-08 Liver 5.4E-03 NA NA 5.4E-03
Dioxin-Like PCB TEQ 1.6E-05 NA NA 1.6E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 2.0E-05 NA NA 2.0E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 6.1E+00 NA NA 6.1E+00
Arsenic 2.5E-06 NA NA 2.5E-06 Skin, Vascular 6.4E-02 NA NA 6.4E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 5.6E-01 NA NA 5.6E-01
Selenium NA NA NA 0.0E+00 Whole Body 6.8E-02 NA NA 6.8E-02
Chemical Total 3.9E-05 NA NA 3.9E-05 6.8E+00 NA NA 6.8E+00
Striped Bass in Gowanus Canal Total 3.9E-05 6.8E+00
Surface
Water/Sediment
Fish and Crab
Tissue
White Perch in
Gowanus Canal
Dioxin-Like PCB TEQ 4.2E-06 NA NA 4.2E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 4.0E-06 NA NA 4.0E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.2E+00 NA NA 1.2E+00
Mercury NA NA NA 0.0E+00 Developmental Neurological 1.0E-01 NA NA 1.0E-01
Selenium NA NA NA 0.0E+00 Whole Body 1.5E-02 NA NA 1.5E-02
Chemical Total 8.2E-06 NA NA 8.2E-06 1.4E+00 NA NA 1.4E+00
White Perch in Gowanus Canal Total 8.2E-06 1.4E+00
TABLE 9.10.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
alpha-Chlordane 1.7E-07 NA NA 1.7E-07 Liver 1.2E-02 NA NA 1.2E-02
Dieldrin 6.2E-06 NA NA 6.2E-06 Liver 9.0E-02 NA NA 9.0E-02
gamma-Chlordane 1.0E-07 NA NA 1.0E-07 Liver 6.9E-03 NA NA 6.9E-03
p,p'-DDD 2.1E-07 NA NA 2.1E-07 NA NA NA NA 0.0E+00
p,p'-DDE 1.9E-07 NA NA 1.9E-07 NA NA NA NA 0.0E+00
p,p'-DDT 3.6E-07 NA NA 3.6E-07 Liver 2.5E-02 NA NA 2.5E-02
Dioxin-Like PCB TEQ 5.0E-05 NA NA 5.0E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 5.5E-05 NA NA 5.5E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.8E+01 NA NA 1.8E+01
Arsenic 1.7E-06 NA NA 1.7E-06 Skin, Vascular 4.4E-02 NA NA 4.4E-02
Chromium (0-2)* 2.5E-05 NA NA 2.5E-05 Not identified 5.9E-02 NA NA 5.9E-02
Chromium (2-6)* 1.5E-05 NA NA 1.5E-05
Copper NA NA NA 0.0E+00 Gastrointestinal 4.9E-02 NA NA 4.9E-02
Cyanide, total NA NA NA 0.0E+00 Weight Loss, Thyroid 4.1E-02 NA NA 4.1E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 6.9E-01 NA NA 6.9E-01
Selenium NA NA NA 0.0E+00 Whole Body 7.4E-02 NA NA 7.4E-02
Chemical Total 1.5E-04 NA NA 1.5E-04 1.9E+01 NA NA 1.9E+01
Eel in Gowanus Canal Total 1.5E-04 1.9E+01
TABLE 9.10.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Benzo(a)anthracene (0-2)* 8.6E-07 NA NA 8.6E-07 NA NA NA NA 0.0E+00
Benzo(a)anthracene (2-6)* 5.1E-07 NA NA 5.1E-07
Benzo(a)pyrene (0-2)* 1.3E-05 NA NA 1.3E-05 NA NA NA NA 0.0E+00
Benzo(a)pyrene (2-6)* 7.9E-06 NA NA 7.9E-06
Benzo(b)fluoranthene (0-2)* 7.1E-07 NA NA 7.1E-07 NA NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-6)* 4.3E-07 NA NA 4.3E-07
Dibenz(a,h)anthracene (0-2)* 4.4E-06 NA NA 4.4E-06 NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene (2-6)* 2.6E-06 NA NA 2.6E-06
Indeno(1,2,3-cd)pyrene (0-2)* 1.1E-06 NA NA 1.1E-06 NA NA NA NA 0.0E+00
Indeno(1,2,3-cd)pyrene (2-6)* 6.6E-07 NA NA 6.6E-07
Dioxin-Like PCB TEQ 3.6E-05 NA NA 3.6E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 1.3E-05 NA NA 1.3E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 4.4E+00 NA NA 4.4E+00
Arsenic 9.0E-06 NA NA 9.0E-06 Skin, Vascular 2.3E-01 NA NA 2.3E-01
Copper NA NA NA 0.0E+00 Gastrointestinal 1.4E-01 NA NA 1.4E-01
Mercury NA NA NA 0.0E+00 Developmental Neurological 6.6E-01 NA NA 6.6E-01
Chemical Total 9.0E-05 NA NA 9.0E-05 5.5E+00 NA NA 5.5E+00
Crab in Gowanus Canal Total 9.0E-05 5.5E+00
Receptor Total - Fish 2.0E-04 Receptor HI Total - Fiish 2.7E+01
Receptor Total - Blue Crab 9.0E-05 Receptor HI Total - Blue Crab 5.5E+00
TABLE 9.10.RME
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Body Weight HI Across All Media = 4.1E-02 Total Developmental HI Across All Media = 6.6E-01
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used Total Developmental HI Across All Media = 1.4E+00 Total Finger and Toe Nails HI Across All Media = 4.4E+00
to adjust CSF for 0-2 year old for exposure duration of 2 years, ADAF of 3 Total Finger and Toe Nails HI Across All Media = 2.5E+01 Total Gastrointestinal HI Across All Media = 1.4E-01
used to adjust CSF for 2-6 year old for exposure duration of 4 years. Total Gastrointestinal HI Across All Media = 4.9E-02 Total Neurological HI Across All Media = 6.6E-01
Non-cancer calculations shown under 0-2 year old only, Total Liver HI Across All Media = 1.4E-01 Total Ocular HI Across All Media = 4.4E+00
as non-cancer calculations are not adjusted for MMOA. Total Neurological HI Across All Media = 1.4E+00 Total Skin HI Across All Media = 2.3E-01
Total Ocular HI Across All Media = 2.5E+01 Total Vascular HI Across All Media = 2.3E-01
Total Skin HI Across All Media = 1.1E-01
Total Thyroid HI Across All Media = 4.1E-02
Total Vascular HI Across All Media = 1.1E-01
Total Whole Body HI Across All Media = 1.6E-01
TABLE 9.1.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Acenaphthene NA NA NA 0.0E+00 Liver 7.8E-05 NA 8.4E-04 9.2E-04
Benzo(a)anthracene 5.1E-08 NA 5.5E-07 6.0E-07 NA NA NA 0.0E+00
Benzo(a)pyrene 4.3E-07 NA 4.6E-06 5.0E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene 4.5E-08 NA 4.9E-07 5.3E-07 NA NA NA 0.0E+00
Benzo(k)fluoranthene 2.6E-09 NA 2.8E-08 3.0E-08 NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate 2.5E-10 NA 2.1E-09 2.4E-09 Increased Liver Weight 2.1E-05 NA 1.8E-04 2.0E-04
Chrysene 1.0E-09 NA 1.1E-08 1.2E-08 NA NA NA 0.0E+00
Dibenz(a,h)anthracene 2.5E-08 NA 2.7E-07 2.9E-07 NA NA NA 0.0E+00
Fluoranthene NA NA NA 0.0E+00 Kidney, Liver, Blood 1.6E-04 NA 1.7E-03 1.9E-03
Indeno(1,2,3-c,d)pyrene 1.9E-08 NA 2.1E-07 2.3E-07 NA NA NA 0.0E+00
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 2.2E-06 NA 2.3E-05 2.6E-05
Pyrene NA NA NA 0.0E+00 Kidney 2.2E-04 NA 2.4E-03 2.6E-03
Dioxin-Like PCB TEQ 3.4E-09 NA 4.0E-08 4.3E-08 NA NA NA 0.0E+00
Nondioxin-Like PCB 2.9E-09 NA 3.3E-08 3.6E-08 NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 3.4E-03 NA 4.0E-02 4.3E-02
Aluminum NA NA NA 0.0E+00 Neurological 2.0E-04 NA 1.7E-04 3.7E-04
Arsenic 1.5E-08 NA 3.7E-08 5.1E-08 Skin, Vascular 7.6E-04 NA 1.9E-03 2.7E-03
Cadmium NA NA NA 0.0E+00 Proteinuria (Kidney) 1.2E-04 NA 4.1E-04 5.3E-04
Chromium 2.5E-08 NA 8.5E-07 8.7E-07 Not identified 4.0E-04 NA 1.3E-02 1.4E-02
Cobalt NA NA NA 0.0E+00 Thyroid 5.5E-04 NA 4.5E-04 1.0E-03
Copper NA NA NA 0.0E+00 Gastrointestinal 1.1E-04 NA 9.3E-05 2.0E-04
Iron NA NA NA 0.0E+00 Gastrointestinal 7.3E-04 NA 6.0E-04 1.3E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Manganese NA NA NA 0.0E+00 CNS 2.9E-05 NA 3.5E-03 3.5E-03
Vanadium NA NA NA 0.0E+00 Hair 1.3E-04 NA 1.1E-04 2.3E-04
Chemical Total 6.2E-07 NA 7.1E-06 7.7E-06 6.9E-03 NA 6.5E-02 7.2E-02
Exposed Surface Sediment Total 7.7E-06 7.2E-02
TABLE 9.1.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Dry event) Benzene 8.7E-11 NA 1.3E-09 1.4E-09 Blood, Immune 9.3E-06 NA 1.4E-04 1.5E-04
Benzo(a)anthracene 1.4E-10 NA 1.6E-07 1.6E-07 NA NA NA 0.0E+00
Benzo(a)pyrene 3.4E-09 NA 6.8E-06 6.8E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene 1.5E-10 NA 3.1E-07 3.1E-07 NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate 2.4E-11 NA 3.5E-09 3.5E-09 Increased Liver Weight 2.0E-06 NA 2.9E-04 2.9E-04
Indeno(1,2,3-c,d)pyrene 6.8E-11 NA 1.4E-07 1.4E-07 NA NA NA 0.0E+00
Arsenic 2.1E-08 NA 1.5E-08 3.6E-08 Skin, Vascular 1.1E-03 NA 7.9E-04 1.9E-03
Chromium 6.7E-09 NA 3.9E-07 3.9E-07 Not identified 1.0E-04 NA 6.0E-03 6.1E-03
Copper NA NA NA 0.0E+00 Gastrointestinal 7.1E-05 NA 5.1E-05 1.2E-04
Selenium NA NA NA 0.0E+00 Whole Body 1.4E-04 NA 9.8E-05 2.3E-04
Chemical Total 3.2E-08 NA 7.9E-06 7.9E-06 1.4E-03 NA 7.4E-03 8.8E-03
Surface Water Total - Dry Event 7.9E-06 8.8E-03
TABLE 9.1.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Wet event) 1,4-dichlorobenzene 2.3E-12 NA 1.4E-10 1.4E-10 Liver 1.4E-07 NA 8.6E-06 8.7E-06
Benzene 3.3E-11 NA 5.0E-10 5.3E-10 Blood, Immune 3.5E-06 NA 5.3E-05 5.6E-05
Chloroform 1.2E-11 NA 1.1E-10 1.2E-10 Liver, Body Weight 9.2E-07 NA 8.0E-06 8.9E-06
Ethylbenzene 6.8E-12 NA 3.8E-10 3.9E-10 Liver, Kidney 1.4E-07 NA 8.1E-06 8.3E-06
Tetrachloroethylene(PCE) 9.3E-09 NA 5.1E-07 5.2E-07 Liver 4.0E-05 NA 2.2E-03 2.3E-03
Benzo(a)anthracene 5.4E-11 NA 6.3E-08 6.3E-08 NA NA NA 0.0E+00
Benzo(a)pyrene 1.1E-09 NA 2.1E-06 2.1E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene 9.8E-11 NA 2.0E-07 2.0E-07 NA NA NA 0.0E+00
Dibenz(a,h)anthracene 5.2E-10 NA 1.6E-06 1.6E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene 2.6E-10 NA 5.3E-07 5.3E-07 NA NA NA 0.0E+00
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 3.0E-07 NA 1.8E-05 1.9E-05
Arsenic 1.8E-08 NA 1.3E-08 3.0E-08 Skin, Vascular 9.2E-04 NA 6.6E-04 1.6E-03
Chromium 3.0E-09 NA 1.7E-07 1.8E-07 Not identified 4.7E-05 NA 2.7E-03 2.8E-03
Cobalt NA NA NA 0.0E+00 Thyroid 2.1E-04 NA 6.2E-05 2.8E-04
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Selenium NA NA NA 0.0E+00 Whole Body 1.1E-04 NA 8.0E-05 1.9E-04
Chemical Total 3.2E-08 NA 5.2E-06 5.3E-06 1.3E-03 NA 5.8E-03 7.2E-03
Surface Water Total - Wet Event 5.3E-06 7.2E-03
Receptor Total 1.6E-05 Receptor HI Total 8.1E-02
TABLE 9.1.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 2.0E-03
CNS - Central Nervous System Total Body Weight HI Across All Media = 5.3E-05
Receptor Total and target organ totals includes sum of exposed and near shore sediment, and maximum of dry event and wet event surface water. Total Finger and Toe Nails HI Across All Media = 4.3E-02
Total Gastrointestinal HI Across All Media = 1.7E-03
Total Hair HI Across All Media = 2.3E-04
Total Kidney HI Across All Media = 5.0E-03
Total Immune HI Across All Media = 1.5E-04
Total Liver HI Across All Media = 5.5E-03
Total Nervous System HI Across All Media = 3.9E-03
Total Ocular HI Across All Media = 4.3E-02
Total Skin HI Across All Media = 4.6E-03
Total Thyroid HI Across All Media = 1.3E-03
Total Vascular HI Across All Media = 4.6E-03
Total Whole Body HI Across All Media = 4.2E-04
TABLE 9.2.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Acenaphthene NA NA NA 0.0E+00 Liver 9.5E-05 NA 1.0E-03 1.1E-03
Benzo(a)anthracene (12-15)* 1.9E-07 NA 2.0E-06 2.2E-06 NA NA NA 0.0E+00
Benzo(a)pyrene (12-15)* 1.6E-06 NA 1.7E-05 1.9E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene (12-15)* 1.7E-07 NA 1.8E-06 2.0E-06 NA NA NA 0.0E+00
Benzo(k)fluoranthene (12-15)* 9.5E-09 NA 1.0E-07 1.1E-07 NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate 3.1E-10 NA 2.6E-09 2.9E-09 Increased Liver Weight 2.6E-05 NA 2.2E-04 2.4E-04
Chrysene (12-15)* 3.7E-09 NA 4.0E-08 4.4E-08 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (12-15)* 9.1E-08 NA 9.9E-07 1.1E-06 NA NA NA 0.0E+00
Fluoranthene NA NA NA 0.0E+00 Kidney, Liver, Blood 1.9E-04 NA 2.1E-03 2.3E-03
Indeno(1,2,3-c,d)pyrene (12-15)* 7.2E-08 NA 7.8E-07 8.5E-07 NA NA NA 0.0E+00
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 2.7E-06 NA 2.9E-05 3.2E-05
Pyrene NA NA NA 0.0E+00 Kidney 2.8E-04 NA 3.0E-03 3.3E-03
Dioxin-Like PCB TEQ 4.2E-09 NA 4.9E-08 5.3E-08 NA NA NA 0.0E+00
Nondioxin-Like PCB 3.5E-09 NA 4.1E-08 4.5E-08 NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 4.2E-03 NA 4.9E-02 5.4E-02
Aluminum NA NA NA 0.0E+00 Neurological 2.5E-04 NA 2.1E-04 4.6E-04
Arsenic 1.8E-08 NA 4.5E-08 6.3E-08 Skin, Vascular 9.4E-04 NA 2.4E-03 3.3E-03
Cadmium NA NA NA 0.0E+00 Proteinuria (Kidney) 1.5E-04 NA 5.0E-04 6.5E-04
Chromium (12-15)* 9.4E-08 NA 3.1E-06 3.2E-06 Not identified 4.9E-04 NA 1.6E-02 1.7E-02
Cobalt NA NA NA 0.0E+00 Thyroid 6.7E-04 NA 5.6E-04 1.2E-03
Copper NA NA NA 0.0E+00 Gastrointestinal 1.4E-04 NA 1.2E-04 2.5E-04
Iron NA NA NA 0.0E+00 Gastrointestinal 8.9E-04 NA 7.5E-04 1.6E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Manganese NA NA NA 0.0E+00 CNS 3.5E-05 NA 4.3E-03 4.3E-03
Vanadium NA NA NA 0.0E+00 Hair 1.6E-04 NA 1.3E-04 2.9E-04
Chemical Total 2.2E-06 NA 2.6E-05 2.8E-05 8.5E-03 NA 8.1E-02 8.9E-02
Exposed Surface Sediment Total 2.8E-05 8.9E-02
TABLE 9.2.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Dry event) Benzene 1.1E-10 NA 1.4E-09 1.5E-09 Blood, Immune 1.1E-05 NA 1.5E-04 1.6E-04
Benzo(a)anthracene (12-15)* 5.1E-10 NA 5.2E-07 5.2E-07 NA NA NA 0.0E+00
Benzo(a)pyrene (12-15)* 1.3E-08 NA 2.2E-05 2.2E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene (12-15)* 5.7E-10 NA 1.0E-06 1.0E-06 NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate 3.0E-11 NA 3.7E-09 3.8E-09 Increased Liver Weight 2.5E-06 NA 3.1E-04 3.1E-04
Indeno(1,2,3-c,d)pyrene (12-15)* 2.5E-10 NA 4.5E-07 4.5E-07 NA NA NA 0.0E+00
Arsenic 2.6E-08 NA 1.6E-08 4.2E-08 Skin, Vascular 1.3E-03 NA 8.5E-04 2.2E-03
Chromium (12-15)* 2.5E-08 NA 1.2E-06 1.3E-06 Not identified 1.3E-04 NA 6.5E-03 6.6E-03
Copper 0.0E+00 NA NA 0.0E+00 Gastrointestinal 8.7E-05 NA 5.5E-05 1.4E-04
Selenium 0.0E+00 NA NA 0.0E+00 Whole Body 1.7E-04 NA 1.0E-04 2.7E-04
Chemical Total 6.5E-08 NA 2.5E-05 2.5E-05 1.7E-03 NA 7.9E-03 9.7E-03
Surface Water Total - Dry Event 2.5E-05 9.7E-03
TABLE 9.2.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Wet event) 1,4-dichlorobenzene 2.8E-12 NA 1.5E-10 1.5E-10 Liver 1.7E-07 NA 9.3E-06 9.4E-06
Benzene 4.0E-11 NA 5.4E-10 5.8E-10 Blood, Immune 4.2E-06 NA 5.7E-05 6.1E-05
Chloroform 1.5E-11 NA 1.1E-10 1.3E-10 Liver, Body Weight 1.1E-06 NA 8.6E-06 9.7E-06
Ethylbenzene 8.3E-12 NA 4.1E-10 4.2E-10 Liver, Kidney 1.8E-07 NA 8.7E-06 8.9E-06
Tetrachloroethylene(PCE) 1.1E-08 NA 5.5E-07 5.6E-07 Liver 5.0E-05 NA 2.4E-03 2.4E-03
Benzo(a)anthracene (12-15)* 2.0E-10 NA 2.0E-07 2.0E-07 NA NA NA 0.0E+00
Benzo(a)pyrene (12-15)* 3.9E-09 NA 6.9E-06 6.9E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (12-15)* 3.6E-10 NA 6.4E-07 6.4E-07 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (12-15)* 1.9E-09 NA 5.2E-06 5.2E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (12-15)* 9.5E-10 NA 1.7E-06 1.7E-06 NA NA NA 0.0E+00
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 3.7E-07 NA 2.0E-05 2.0E-05
Arsenic 2.2E-08 NA 1.4E-08 3.5E-08 Skin, Vascular 1.1E-03 NA 7.1E-04 1.8E-03
Chromium (12-15)* 1.1E-08 NA 5.6E-07 5.7E-07 Not identified 5.8E-05 NA 2.9E-03 3.0E-03
Cobalt NA NA NA 0.0E+00 Thyroid 2.6E-04 NA 6.7E-05 3.3E-04
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Selenium NA NA NA 0.0E+00 Whole Body 1.4E-04 NA 8.6E-05 2.2E-04
Chemical Total 5.2E-08 NA 1.6E-05 1.6E-05 1.6E-03 NA 6.3E-03 7.9E-03
Surface Water Total - Wet Event 1.6E-05 7.9E-03
Receptor Total 5.4E-05 Receptor HI Total 9.9E-02
TABLE 9.2.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 2.5E-03
CNS - Central Nervous System Total Body Weight HI Across All Media = 6.2E-05
Receptor Total and target organ totals includes sum of exposed and near shore sediment, and maximum of dry event and wet event surface water. Total Finger and Toe Nails HI Across All Media = 5.4E-02
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 3 used to adjust CSF for 12-15 year old for exposure duration of 3 years, Total Gastrointestinal HI Across All Media = 2.0E-03
the CTE exposure duration for an adolescent. Total Hair HI Across All Media = 2.9E-04
Total Kidney HI Across All Media = 6.2E-03
Total Immune HI Across All Media = 1.6E-04
Total Liver HI Across All Media = 6.5E-03
Total Nervous System HI Across All Media = 4.8E-03
Total Ocular HI Across All Media = 5.4E-02
Total Skin HI Across All Media = 5.5E-03
Total Thyroid HI Across All Media = 1.6E-03
Total Vascular HI Across All Media = 5.5E-03
Total Whole Body HI Across All Media = 4.9E-04
TABLE 9.3.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Acenaphthene NA NA NA 0.0E+00 Liver 7.2E-04 NA 1.1E-03 1.8E-03
Benzo(a)anthracene (0-2)* 3.1E-06 NA 4.6E-06 7.7E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (2-3)* 4.7E-07 NA 6.9E-07 1.2E-06
Benzo(a)pyrene (0-2)* 2.6E-05 NA 3.9E-05 6.5E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (2-3)* 4.0E-06 NA 5.8E-06 9.8E-06
Benzo(b)fluoranthene (0-2)* 2.8E-06 NA 4.1E-06 6.9E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-3)* 4.2E-07 NA 6.1E-07 1.0E-06
Benzo(k)fluoranthene (0-2)* 1.6E-07 NA 2.3E-07 3.9E-07 NA NA NA 0.0E+00
Benzo(k)fluoranthene (2-3)* 2.4E-08 NA 3.5E-08 5.9E-08
Bis(2-ethylhexyl) phthalate 2.4E-09 NA 2.7E-09 5.0E-09 Increased Liver Weight 2.0E-04 NA 2.2E-04 4.2E-04
Chrysene (0-2)* 6.3E-08 NA 9.1E-08 1.5E-07 NA NA NA 0.0E+00
Chrysene (2-3)* 9.4E-09 NA 1.4E-08 2.3E-08
Dibenz(a,h)anthracene (0-2)* 1.5E-06 NA 2.2E-06 3.8E-06 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (0-2)* 2.3E-07 NA 3.3E-07 5.6E-07
Fluoranthene NA NA NA 0.0E+00 Kidney, Liver, Blood 1.5E-03 NA 2.1E-03 3.6E-03
Indeno(1,2,3-c,d)pyrene (0-2)* 1.2E-06 NA 1.8E-06 3.0E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-3)* 1.8E-07 NA 2.6E-07 4.5E-07
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 2.0E-05 NA 2.9E-05 5.0E-05
Pyrene NA NA NA 0.0E+00 Kidney 2.1E-03 NA 3.0E-03 5.1E-03
Dioxin-Like PCB TEQ 3.2E-08 NA 5.0E-08 8.2E-08 NA NA NA 0.0E+00
Nondioxin-Like PCB 2.7E-08 NA 4.2E-08 6.8E-08 NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 3.2E-02 NA 5.0E-02 8.2E-02
Aluminum NA NA NA 0.0E+00 Neurological 1.9E-03 NA 2.1E-04 2.1E-03
Arsenic 1.4E-07 NA 4.6E-08 1.8E-07 Skin, Vascular 7.1E-03 NA 2.4E-03 9.5E-03
Cadmium NA NA NA 0.0E+00 Proteinuria (Kidney) 1.1E-03 NA 5.1E-04 1.7E-03
Chromium (0-2)* 1.6E-06 NA 7.1E-06 8.7E-06 Not identified 3.7E-03 NA 1.7E-02 2.0E-02
Chromium (2-3)* 2.4E-07 NA 1.1E-06 1.3E-06
Cobalt NA NA NA 0.0E+00 Thyroid 5.1E-03 NA 5.7E-04 5.7E-03
Copper NA NA NA 0.0E+00 Gastrointestinal 1.0E-03 NA 1.2E-04 1.2E-03
Iron NA NA NA 0.0E+00 Gastrointestinal 6.8E-03 NA 7.6E-04 7.5E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Manganese NA NA NA 0.0E+00 CNS 2.7E-04 NA 4.3E-03 4.6E-03
Vanadium NA NA NA 0.0E+00 Hair 1.2E-03 NA 1.3E-04 1.3E-03
Chemical Total 4.3E-05 NA 6.8E-05 1.1E-04 6.5E-02 NA 8.2E-02 1.5E-01
Exposed Surface Sediment Total 1.1E-04 1.5E-01
TABLE 9.3.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Dry event) Benzene 4.1E-10 NA 2.3E-09 2.7E-09 Blood, Immune 4.3E-05 NA 2.4E-04 2.9E-04
Benzo(a)anthracene (0-2)* 4.3E-09 NA 1.8E-06 1.8E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (2-3)* 6.4E-10 NA 2.8E-07 2.8E-07
Benzo(a)pyrene (0-2)* 1.1E-07 NA 7.8E-05 7.8E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (2-3)* 1.6E-08 NA 1.2E-05 1.2E-05
Benzo(b)fluoranthene (0-2)* 4.8E-09 NA 3.6E-06 3.6E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-3)* 7.2E-10 NA 5.4E-07 5.4E-07
Bis(2-ethylhexyl) phthalate 1.1E-10 NA 5.9E-09 6.0E-09 Increased Liver Weight 9.5E-06 NA 4.9E-04 5.0E-04
Indeno(1,2,3-c,d)pyrene (0-2)* 2.1E-09 NA 1.6E-06 1.6E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-3)* 3.2E-10 NA 2.4E-07 2.4E-07
Arsenic 9.9E-08 NA 2.6E-08 1.2E-07 Skin, Vascular 5.1E-03 NA 1.4E-03 6.5E-03
Chromium (0-2)* 2.1E-07 NA 4.4E-06 4.6E-06 Not identified 4.9E-04 NA 1.0E-02 1.1E-02
Chromium (2-3)* 3.1E-08 NA 6.6E-07 6.9E-07
Copper 0.0E+00 NA NA 0.0E+00 Gastrointestinal 3.3E-04 NA 8.8E-05 4.2E-04
Selenium 0.0E+00 NA NA 0.0E+00 Whole Body 6.3E-04 NA 1.7E-04 8.0E-04
Chemical Total 4.7E-07 NA 1.0E-04 1.0E-04 6.6E-03 NA 1.3E-02 1.9E-02
Surface Water Total - Dry Event 1.0E-04 1.9E-02
TABLE 9.3.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Wet event) 1,4-dichlorobenzene 1.1E-11 NA 2.4E-10 2.5E-10 Liver 6.5E-07 NA 1.5E-05 1.5E-05
Benzene 1.5E-10 NA 8.5E-10 1.0E-09 Blood, Immune 1.6E-05 NA 9.1E-05 1.1E-04
Chloroform 5.7E-11 NA 1.8E-10 2.4E-10 Liver, Body Weight 4.3E-06 NA 1.4E-05 1.8E-05
Ethylbenzene 3.2E-11 NA 6.6E-10 6.9E-10 Liver, Kidney 6.7E-07 NA 1.4E-05 1.5E-05
Tetrachloroethylene(PCE) 4.4E-08 NA 8.8E-07 9.2E-07 Liver 1.9E-04 NA 3.8E-03 4.0E-03
Benzo(a)anthracene (0-2)* 1.7E-09 NA 7.2E-07 7.2E-07 NA NA NA 0.0E+00
Benzo(a)anthracene (2-3)* 2.5E-10 NA 3.6E-07 3.6E-07
Benzo(a)pyrene (0-2)* 3.3E-08 NA 2.4E-05 2.4E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (2-3)* 4.9E-09 NA 3.4E-06 3.4E-06
Benzo(b)fluoranthene (0-2)* 3.0E-09 NA 2.3E-06 2.3E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-3)* 4.6E-10 NA 2.8E-07 2.8E-07
Dibenz(a,h)anthracene (0-2)* 1.6E-08 NA 1.8E-05 1.8E-05 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (0-2)* 2.4E-09 NA 9.0E-06 9.0E-06
Indeno(1,2,3-c,d)pyrene (0-2)* 8.0E-09 NA 6.0E-06 6.0E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-3)* 1.2E-09 NA 2.0E-08 2.1E-08
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight 1.4E-06 NA 3.2E-05 3.3E-05
Arsenic 8.2E-08 NA 2.2E-08 1.0E-07 Skin, Vascular 4.3E-03 NA 1.1E-03 5.4E-03
Chromium (0-2)* 9.4E-08 NA 2.0E-06 2.1E-06 Not identified 2.2E-04 NA 4.6E-03 4.9E-03
Chromium (2-3)* 1.4E-08 NA 2.7E-08 4.1E-08
Cobalt NA NA NA 0.0E+00 Thyroid 1.0E-03 NA 1.1E-04 1.1E-03
Lead NA NA NA 0.0E+00 NA NA NA 0.0E+00
Selenium NA NA NA 0.0E+00 Whole Body 5.2E-04 NA 1.4E-04 6.6E-04
Chemical Total 3.1E-07 NA 6.8E-05 6.8E-05 6.2E-03 NA 1.0E-02 1.6E-02
Surface Water Total - Wet Event 6.8E-05 1.6E-02
Receptor Total 2.1E-04 Receptor HI Total 1.7E-01
TABLE 9.3.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 3.9E-03
CNS - Central Nervous System Total Body Weight HI Across All Media = 1.0E-04
Receptor Total and target organ totals includes sum of exposed and near shore sediment, and maximum of dry event and wet event surface water. Total Finger and Toe Nails HI Across All Media = 8.2E-02
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used to adjust CSF for 0-2 year old for exposure duration of 2 years, ADAF of 3 Total Gastrointestinal HI Across All Media = 9.1E-03
used to adjust CSF for 2-3 year old for exposure duration of 1 year, for a total CTE exposure duration of 3 years. Non-cancer calculations shown under 0-2 year old only, Total Hair HI Across All Media = 1.3E-03
as non-cancer calculations are not adjusted for MMOA. Total Kidney HI Across All Media = 1.0E-02
Total Immune HI Across All Media = 2.9E-04
Total Liver HI Across All Media = 1.0E-02
Total Nervous System HI Across All Media = 6.7E-03
Total Ocular HI Across All Media = 8.2E-02
Total Skin HI Across All Media = 1.6E-02
Total Thyroid HI Across All Media = 6.8E-03
Total Vascular HI Across All Media = 1.6E-02
Total Whole Body HI Across All Media = 1.5E-03
TABLE 9.4.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at street
level
(pre-aeration system Benzene NA NA NA Blood NA 2.7E-02 NA 2.7E-02
operation) Chloroform NA NA NA Liver NA 1.6E-03 NA 1.6E-03
Ethylbenzene NA NA NA Developmental NA 7.0E-04 NA 7.0E-04
Naphthalene NA NA NA Nasal, Respiratory NA 2.8E-01 NA 2.8E-01
Chemical Total NA NA NA NA 3.1E-01 NA 3.1E-01
Ambient air at street level Total - Pre-aeration system operation 3.1E-01
Air Air
Ambient air at canal
level
(after aeration system Benzene NA NA NA Blood NA 2.4E-02 NA 2.4E-02
started) Chloroform NA NA NA Liver NA 2.2E-03 NA 2.2E-03
Ethylbenzene NA NA NA Developmental NA 7.9E-04 NA 7.9E-04
Naphthalene NA NA NA Nasal, Respiratory NA 6.5E-01 NA 6.5E-01
Chemical Total NA NA NA NA 6.7E-01 NA 6.7E-01
Ambient air at street level Total - After aeration system turned on 6.7E-01
TABLE 9.4.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal 2-methylnaphthalene NA NA NA Lung 7.9E-04 NA 2.3E-03 3.1E-03
Acenaphthene NA NA NA Liver 4.5E-05 NA 1.3E-04 1.8E-04
Benzo(a)anthracene NA NA NA NA NA NA 0.0E+00
Benzo(a)pyrene NA NA NA NA NA NA 0.0E+00
Benzo(b)fluoranthene NA NA NA NA NA NA 0.0E+00
Benzo(k)fluoranthene NA NA NA NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate NA NA NA Increased Liver Weight 6.4E-06 NA 1.5E-05 2.1E-05
Chrysene NA NA NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene NA NA NA NA NA NA 0.0E+00
Fluoranthene NA NA NA Kidney, Liver, Blood 4.0E-05 NA 1.2E-04 1.6E-04
Fluorene NA NA NA Blood 5.1E-05 NA 1.5E-04 2.0E-04
Indeno(1,2,3-c,d)pyrene NA NA NA NA NA NA 0.0E+00
Naphthalene NA NA NA Decreased Body Weight 2.9E-04 NA 8.5E-04 1.1E-03
Pyrene NA NA NA Kidney 1.1E-04 NA 3.4E-04 4.5E-04
Dioxin-Like PCB TEQ NA NA NA NA NA NA 0.0E+00
Nondioxin-Like PCB NA NA NA NA NA NA 0.0E+00
Total PCB NA NA NA Ocular, Finger and Toe Nails 2.9E-03 NA 9.3E-03 1.2E-02
Aluminum NA NA NA Neurological 1.3E-04 NA 2.9E-05 1.6E-04
Arsenic NA NA NA Skin, Vascular 4.3E-04 NA 3.0E-04 7.3E-04
Cadmium NA NA NA Proteinuria (Kidney) 8.8E-05 NA 8.0E-05 1.7E-04
Chromium NA NA NA Not identified 2.5E-04 NA 2.3E-03 2.5E-03
Cobalt NA NA NA Thyroid 3.2E-04 NA 7.4E-05 4.0E-04
Copper NA NA NA Gastrointestinal 6.0E-05 NA 1.4E-05 7.4E-05
Iron NA NA NA Gastrointestinal 4.2E-04 NA 9.6E-05 5.2E-04
Lead NA NA NA NA NA NA 0.0E+00
Manganese NA NA NA CNS 1.9E-05 NA 8.8E-07 2.0E-05
Vanadium NA NA NA Hair 8.1E-05 NA 1.8E-05 9.9E-05
Chemical Total NA NA NA 6.1E-03 NA 1.6E-02 2.2E-02
Overflow Surface Sediment Total 2.2E-02
TABLE 9.4.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water
Overflow Surface
Water
Canal Overflow -
Surface Water
1,4-dichlorobenzene NA NA NA Liver 4.8E-08 NA 9.4E-07 9.9E-07
Benzene NA NA NA Blood, Immune 1.2E-06 NA 5.8E-06 7.0E-06
Chloroform NA NA NA Liver, Body Weight 3.2E-07 NA 8.7E-07 1.2E-06
Ethylbenzene NA NA NA Liver, Kidney 5.0E-08 NA 8.9E-07 9.4E-07
Tetrachloroethylene(PCE) NA NA NA Liver 1.4E-05 NA 2.4E-04 2.6E-04
Benzo(a)anthracene NA NA NA NA NA NA 0.0E+00
Benzo(a)pyrene NA NA NA NA NA NA 0.0E+00
Benzo(b)fluoranthene NA NA NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene NA NA NA NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene NA NA NA NA NA NA 0.0E+00
Naphthalene NA NA NA Decreased Body Weight 1.0E-07 NA 2.0E-06 2.1E-06
Arsenic NA NA NA Skin, Vascular 3.2E-04 NA 7.2E-05 3.9E-04
Chromium NA NA NA Not identified 1.6E-05 NA 3.0E-04 3.1E-04
Cobalt NA NA NA Thyroid 7.4E-05 NA 6.8E-06 8.1E-05
Lead NA NA NA NA NA NA 0.0E+00
Selenium NA NA NA Whole Body 3.8E-05 NA 8.8E-06 4.7E-05
Chemical Total NA NA NA 4.6E-04 NA 6.4E-04 1.1E-03
Overflow Surface Water Total 1.1E-03
Receptor Total Receptor HI Total 7.0E-01
TABLE 9.4.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 2.7E-02
CNS - Central Nervous System Total Body Weight HI Across All Media = 1.1E-03
Receptor Total and target organ totals includes maximum between air prior to and after aeration system operation, and surface water, and sediment. Total Developmental HI Across All Media = 1.5E-03
Total Finger and Toe Nails HI Across All Media = 1.2E-02
Total Gastrointestinal HI Across All Media = 5.9E-04
Total Hair HI Across All Media = 9.9E-05
Total Kidney HI Across All Media = 7.8E-04
Total Immune HI Across All Media = 7.0E-06
Total Liver HI Across All Media = 2.8E-03
Total Lung HI Across All Media = 3.1E-03
Total Nasal HI Across All Media = 6.5E-01
Total Nervous System HI Across All Media = 1.8E-04
Total Ocular HI Across All Media = 1.2E-02
Total Respiratory HI Across All Media = 6.5E-01
Total Skin HI Across All Media = 1.1E-03
Total Thyroid HI Across All Media = 4.8E-04
Total Vascular HI Across All Media = 1.1E-03
Total Whole Body HI Across All Media = 4.7E-05
TABLE 9.5.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at street
level
(pre-aeration system Benzene NA NA NA Blood NA 2.7E-02 NA 2.7E-02
operation) Chloroform NA NA NA Liver NA 1.6E-03 NA 1.6E-03
Ethylbenzene NA NA NA Developmental NA 7.0E-04 NA 7.0E-04
Naphthalene NA NA NA Nasal, Respiratory NA 2.8E-01 NA 2.8E-01
Chemical Total NA NA NA NA 3.1E-01 NA 3.1E-01
Ambient air at street level Total - Pre-aeration system operation 3.1E-01
Air Air
Ambient air at canal
level
(after aeration system Benzene NA NA NA Blood NA 2.4E-02 NA 2.4E-02
started) Chloroform NA NA NA Liver NA 2.2E-03 NA 2.2E-03
Ethylbenzene NA NA NA Developmental NA 7.9E-04 NA 7.9E-04
Naphthalene NA NA NA Nasal, Respiratory NA 6.5E-01 NA 6.5E-01
Chemical Total NA NA NA NA 6.7E-01 NA 6.7E-01
Ambient air at street level Total - After aeration system turned on 6.7E-01
TABLE 9.5.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal 2-methylnaphthalene NA NA NA Lung 7.4E-03 NA 5.4E-03 1.3E-02
Acenaphthene NA NA NA Liver 4.2E-04 NA 3.1E-04 7.3E-04
Benzo(a)anthracene NA NA NA NA NA NA 0.0E+00
Benzo(a)pyrene NA NA NA NA NA NA 0.0E+00
Benzo(b)fluoranthene NA NA NA NA NA NA 0.0E+00
Benzo(k)fluoranthene NA NA NA NA NA NA 0.0E+00
Bis(2-ethylhexyl) phthalate NA NA NA Increased Liver Weight 6.0E-05 NA 3.3E-05 9.3E-05
Chrysene NA NA NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene NA NA NA NA NA NA 0.0E+00
Fluoranthene NA NA NA Kidney, Liver, Blood 3.7E-04 NA 2.7E-04 6.4E-04
Fluorene NA NA NA Blood 4.7E-04 NA 3.5E-04 8.2E-04
Indeno(1,2,3-c,d)pyrene NA NA NA NA NA NA 0.0E+00
Naphthalene NA NA NA Decreased Body Weight 2.7E-03 NA 2.0E-03 4.7E-03
Pyrene NA NA NA Kidney 1.1E-03 NA 7.7E-04 1.8E-03
Dioxin-Like PCB TEQ NA NA NA NA NA NA 0.0E+00
Nondioxin-Like PCB NA NA NA NA NA NA 0.0E+00
Total PCB NA NA NA Ocular, Finger and Toe Nails 2.7E-02 NA 2.1E-02 4.9E-02
Aluminum NA NA NA Neurological 1.2E-03 NA 6.7E-05 1.3E-03
Arsenic NA NA NA Skin, Vascular 4.0E-03 NA 6.8E-04 4.7E-03
Cadmium NA NA NA Proteinuria (Kidney) 8.2E-04 NA 1.8E-04 1.0E-03
Chromium NA NA NA Not identified 2.3E-03 NA 5.2E-03 7.5E-03
Cobalt NA NA NA Thyroid 3.0E-03 NA 1.7E-04 3.2E-03
Copper NA NA NA Gastrointestinal 5.6E-04 NA 3.2E-05 5.9E-04
Iron NA NA NA Gastrointestinal 3.9E-03 NA 2.2E-04 4.2E-03
Lead NA NA NA NA NA NA 0.0E+00
Manganese NA NA NA CNS 1.8E-04 NA 2.0E-06 1.8E-04
Vanadium NA NA NA Hair 7.5E-04 NA 4.2E-05 8.0E-04
Chemical Total NA NA NA 5.7E-02 NA 3.7E-02 9.3E-02
Overflow Surface Sediment Total 9.3E-02
TABLE 9.5.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water
Overflow Surface
Water
Canal Overflow -
Surface Water
1,4-dichlorobenzene NA NA NA Liver 2.3E-07 NA 2.2E-06 2.4E-06
Benzene NA NA NA Blood, Immune 5.6E-06 NA 1.3E-05 1.9E-05
Chloroform NA NA NA Liver, Body Weight 1.5E-06 NA 2.0E-06 3.5E-06
Ethylbenzene NA NA NA Liver, Kidney 2.3E-07 NA 2.0E-06 2.3E-06
Tetrachloroethylene(PCE) NA NA NA Liver 6.5E-05 NA 5.6E-04 6.2E-04
Benzo(a)anthracene NA NA NA NA NA NA 0.0E+00
Benzo(a)pyrene NA NA NA NA NA NA 0.0E+00
Benzo(b)fluoranthene NA NA NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene NA NA NA NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene NA NA NA NA NA NA 0.0E+00
Naphthalene NA NA NA Decreased Body Weight 4.9E-07 NA 4.6E-06 5.1E-06
Arsenic NA NA NA Skin, Vascular 1.5E-03 NA 1.7E-04 1.6E-03
Chromium NA NA NA Not identified 7.6E-05 NA 6.8E-04 7.6E-04
Cobalt NA NA NA Thyroid 3.5E-04 NA 1.6E-05 3.6E-04
Lead NA NA NA NA NA NA 0.0E+00
Selenium NA NA NA Whole Body 1.8E-04 NA 2.0E-05 2.0E-04
Chemical Total NA NA NA 2.2E-03 NA 1.5E-03 3.6E-03
Overflow Surface Water Total 3.6E-03
Receptor Total Receptor HI Total 7.7E-01
TABLE 9.5.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
HI - Hazard Index Total Blood HI Across All Media = 2.8E-02
CNS - Central Nervous System Total Body Weight HI Across All Media = 4.7E-03
Receptor Total and target organ totals includes maximum between air prior to and after aeration system operation, and surface water, and sediment. Total Developmental HI Across All Media = 1.5E-03
Total Finger and Toe Nails HI Across All Media = 4.9E-02
Total Gastrointestinal HI Across All Media = 4.8E-03
Total Hair HI Across All Media = 8.0E-04
Total Kidney HI Across All Media = 3.5E-03
Total Immune HI Across All Media = 1.9E-05
Total Liver HI Across All Media = 4.3E-03
Total Lung HI Across All Media = 1.3E-02
Total Nasal HI Across All Media = 6.5E-01
Total Nervous System HI Across All Media = 1.4E-03
Total Ocular HI Across All Media = 4.9E-02
Total Respiratory HI Across All Media = 6.5E-01
Total Skin HI Across All Media = 6.3E-03
Total Thyroid HI Across All Media = 3.5E-03
Total Vascular HI Across All Media = 6.3E-03
Total Whole Body HI Across All Media = 2.0E-04
TABLE 9.6.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at street
level
(pre-aeration system Benzene NA 8.1E-07 NA 8.1E-07 Blood NA NA NA
operation) Chloroform NA 4.6E-07 NA 4.6E-07 Liver NA NA NA
Ethylbenzene NA 2.2E-07 NA 2.2E-07 Developmental NA NA NA
Naphthalene NA 3.6E-06 NA 3.6E-06 Nasal, Respiratory NA NA NA
Chemical Total NA 5.1E-06 NA 5.1E-06 NA NA NA
Ambient air at street level Total - Pre-aeration system operation 5.1E-06
Air Air
Ambient air at canal
level
(after aeration system Benzene NA 7.1E-07 NA 7.1E-07 Blood NA NA NA
started) Chloroform NA 6.3E-07 NA 6.3E-07 Liver NA NA NA
Ethylbenzene NA 2.6E-07 NA 2.6E-07 Developmental NA NA NA
Naphthalene NA 8.5E-06 NA 8.5E-06 Nasal, Respiratory NA NA NA
Chemical Total NA 1.0E-05 NA 1.0E-05 NA NA NA
Ambient air at street level Total - After aeration system turned on 1.0E-05
TABLE 9.6.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal 2-methylnaphthalene NA NA NA 0.0E+00 Lung NA NA NA
Acenaphthene NA NA NA 0.0E+00 Liver NA NA NA
Benzo(a)anthracene 3.5E-06 NA 2.7E-06 6.2E-06 NA NA NA
Benzo(a)pyrene 2.0E-05 NA 1.5E-05 3.5E-05 NA NA NA
Benzo(b)fluoranthene 2.2E-06 NA 1.6E-06 3.8E-06 NA NA NA
Benzo(k)fluoranthene 1.1E-07 NA 8.5E-08 2.0E-07 NA NA NA
Bis(2-ethylhexyl) phthalate 1.5E-09 NA 1.3E-09 2.8E-09 Increased Liver Weight NA NA NA
Chrysene 3.5E-08 NA 2.6E-08 6.2E-08 NA NA NA
Dibenz(a,h)anthracene 1.5E-06 NA 1.1E-06 2.6E-06 NA NA NA
Fluoranthene NA NA NA 0.0E+00 Kidney, Liver, Blood NA NA NA
Fluorene NA NA NA 0.0E+00 Blood NA NA NA
Indeno(1,2,3-c,d)pyrene 8.7E-07 NA 6.5E-07 1.5E-06 NA NA NA
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight NA NA NA
Pyrene NA NA NA 0.0E+00 Kidney NA NA NA
Dioxin-Like PCB TEQ 5.2E-08 NA 6.5E-08 1.2E-07 NA NA NA
Nondioxin-Like PCB 4.8E-08 NA 5.9E-08 1.1E-07 NA NA NA
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails NA NA NA
Aluminum NA NA NA 0.0E+00 Neurological NA NA NA
Arsenic 1.6E-07 NA 4.3E-08 2.1E-07 Skin, Vascular NA NA NA
Cadmium NA NA NA 0.0E+00 Proteinuria (Kidney) NA NA NA
Chromium 1.6E-08 NA 3.7E-07 3.9E-07 Not identified NA NA NA
Cobalt NA NA NA 0.0E+00 Thyroid NA NA NA
Copper NA NA NA 0.0E+00 Gastrointestinal NA NA NA
Iron NA NA NA 0.0E+00 Gastrointestinal NA NA NA
Lead NA NA NA 0.0E+00 NA NA NA
Manganese NA NA NA 0.0E+00 CNS NA NA NA
Vanadium NA NA NA 0.0E+00 Hair NA NA NA
Chemical Total 2.9E-05 NA 2.2E-05 5.1E-05 NA NA NA
Overflow Surface Sediment Total 5.1E-05
TABLE 9.6.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water
Overflow Surface
Water
Canal Overflow -
Surface Water
1,4-dichlorobenzene 9.5E-12 NA 1.2E-10 1.3E-10 Liver NA NA NA
Benzene 1.4E-10 NA 4.2E-10 5.5E-10 Blood, Immune NA NA NA
Chloroform 5.2E-11 NA 8.8E-11 1.4E-10 Liver, Body Weight NA NA NA
Ethylbenzene 2.8E-11 NA 3.2E-10 3.5E-10 Liver, Kidney NA NA NA
Tetrachloroethylene(PCE) 3.9E-08 NA 4.3E-07 4.7E-07 Liver NA NA NA
Benzo(a)anthracene 9.5E-10 NA 1.8E-07 1.8E-07 NA NA NA
Benzo(a)pyrene 2.2E-08 NA 5.9E-06 6.0E-06 NA NA NA
Benzo(b)fluoranthene 2.1E-09 NA 5.5E-07 5.6E-07 NA NA NA
Dibenz(a,h)anthracene 1.1E-08 NA 4.5E-06 4.5E-06 NA NA NA
Indeno(1,2,3-c,d)pyrene 5.4E-09 NA 1.5E-06 1.5E-06 NA NA NA
Naphthalene NA NA NA 0.0E+00 Decreased Body Weight NA NA NA
Arsenic 7.4E-08 NA 1.1E-08 8.5E-08 Skin, Vascular NA NA NA
Chromium 6.4E-08 NA 8.8E-07 9.5E-07 Not identified NA NA NA
Cobalt NA NA NA 0.0E+00 Thyroid NA NA NA
Lead NA NA NA 0.0E+00 NA NA NA
Selenium NA NA NA 0.0E+00 Whole Body NA NA NA
Chemical Total 2.2E-07 NA 1.4E-05 1.4E-05 NA NA NA
Overflow Surface Water Total 1.4E-05
Receptor Total 7.5E-05 Receptor HI Total
Receptor Total includes maximum between air prior to and after aeration system operation, and surface water, and sediment.
TABLE 9.7.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
p,p'-DDE 3.3E-09 NA NA 3.3E-09 NA NA NA NA 0.0E+00
p,p'-DDT 2.6E-09 NA NA 2.6E-09 Liver 3.6E-04 NA NA 3.6E-04
Dioxin-Like PCB TEQ 5.4E-07 NA NA 5.4E-07 NA NA NA NA 0.0E+00
Nondioxin-Like 3.3E-07 NA NA 3.3E-07 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 4.1E-01 NA NA 4.1E-01
Arsenic 8.2E-08 NA NA 8.2E-08 Skin, Vascular 4.3E-03 NA NA 4.3E-03
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.8E-02 NA NA 3.8E-02
Selenium NA NA NA 0.0E+00 Whole Body 4.5E-03 NA NA 4.5E-03
Chemical Total 9.6E-07 NA NA 9.6E-07 4.6E-01 NA NA 4.6E-01
Striped Bass in Gowanus Canal Total 9.6E-07 4.6E-01
Surface
Water/Sediment
Fish and Crab
Tissue
White Perch in
Gowanus Canal
Dioxin-Like PCB TEQ 8.0E-08 NA NA 8.0E-08 NA NA NA NA 0.0E+00
Nondioxin-Like 3.9E-08 NA NA 3.9E-08 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 4.8E-02 NA NA 4.8E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.9E-03 NA NA 3.9E-03
Selenium NA NA NA 0.0E+00 Whole Body 5.8E-04 NA NA 5.8E-04
Chemical Total 1.2E-07 NA NA 1.2E-07 5.2E-02 NA NA 5.2E-02
White Perch in Gowanus Canal Total 1.2E-07 5.2E-02
TABLE 9.7.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
alpha-Chlordane 5.5E-09 NA NA 5.5E-09 Liver 7.3E-04 NA NA 7.3E-04
Dieldrin 1.9E-07 NA NA 1.9E-07 Liver 5.6E-03 NA NA 5.6E-03
gamma-Chlordane 3.2E-09 NA NA 3.2E-09 Liver 4.3E-04 NA NA 4.3E-04
p,p'-DDD 6.5E-09 NA NA 6.5E-09 NA NA NA NA 0.0E+00
p,p'-DDE 6.0E-09 NA NA 6.0E-09 NA NA NA NA 0.0E+00
p,p'-DDT 1.1E-08 NA NA 1.1E-08 Liver 1.6E-03 NA NA 1.6E-03
Dioxin-Like PCB TEQ 1.6E-06 NA NA 1.6E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 8.7E-07 NA NA 8.7E-07 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.1E+00 NA NA 1.1E+00
Arsenic 5.3E-08 NA NA 5.3E-08 Skin, Vascular 2.8E-03 NA NA 2.8E-03
Chromium 2.4E-07 NA NA 2.4E-07 Not identified 3.7E-03 NA NA 3.7E-03
Copper NA NA NA 0.0E+00 Gastrointestinal 3.1E-03 NA NA 3.1E-03
Cyanide, total NA NA NA 0.0E+00 Weight Loss, Thyroid 2.6E-03 NA NA 2.6E-03
Mercury NA NA NA 0.0E+00 Developmental Neurological 4.3E-02 NA NA 4.3E-02
Selenium NA NA NA 0.0E+00 Whole Body 4.6E-03 NA NA 4.6E-03
Chemical Total 2.9E-06 NA NA 2.9E-06 1.2E+00 NA NA 1.2E+00
Eel in Gowanus Canal Total 2.9E-06 1.2E+00
TABLE 9.7.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Benzo(a)anthracene 5.5E-08 NA NA 5.5E-08 NA NA NA NA 0.0E+00
Benzo(a)pyrene 8.4E-07 NA NA 8.4E-07 NA NA NA NA 0.0E+00
Benzo(b)fluoranthene 4.6E-08 NA NA 4.6E-08 NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene 2.8E-07 NA NA 2.8E-07 NA NA NA NA 0.0E+00
Indeno(1,2,3-cd)pyrene 7.1E-08 NA NA 7.1E-08 NA NA NA NA 0.0E+00
Dioxin-Like PCB TEQ 7.7E-06 NA NA 7.7E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 1.4E-06 NA NA 1.4E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.9E+00 NA NA 1.9E+00
Arsenic 1.9E-06 NA NA 1.9E-06 Skin, Vascular 1.0E-01 NA NA 1.0E-01
Copper NA NA NA 0.0E+00 Gastrointestinal 5.8E-02 NA NA 5.8E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 2.8E-01 NA NA 2.8E-01
Chemical Total 1.2E-05 NA NA 1.2E-05 2.3E+00 NA NA 2.3E+00
Crab in Gowanus Canal Total 1.2E-05 2.3E+00
Receptor Total - Fish 4.0E-06 Receptor HI Total - Fiish 1.7E+00
Receptor Total - Blue Crab 1.2E-05 Receptor HI Total - Blue Crab 2.3E+00
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Body Weight HI Across All Media = 2.6E-03 Total Developmental HI Across All Media = 2.8E-01
Total Developmental HI Across All Media = 8.5E-02 Total Finger and Toe Nails HI Across All Media = 1.9E+00
Total Finger and Toe Nails HI Across All Media = 1.6E+00 Total Gastrointestinal HI Across All Media = 5.8E-02
Total Gastrointestinal HI Across All Media = 3.1E-03 Total Neurological HI Across All Media = 2.8E-01
Total Liver HI Across All Media = 8.7E-03 Total Ocular HI Across All Media = 1.9E+00
Total Neurological HI Across All Media = 8.5E-02 Total Skin HI Across All Media = 1.0E-01
Total Ocular HI Across All Media = 1.6E+00 Total Vascular HI Across All Media = 1.0E-01
Total Skin HI Across All Media = 7.0E-03
Total Thyroid HI Across All Media = 2.6E-03
Total Vascular HI Across All Media = 7.0E-03
Total Whole Body HI Across All Media = 9.7E-03
TABLE 9.8.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
p,p'-DDE 2.7E-09 NA NA 2.7E-09 NA NA NA NA 0.0E+00
p,p'-DDT 2.1E-09 NA NA 2.1E-09 Liver 2.9E-04 NA NA 2.9E-04
Dioxin-Like PCB TEQ 4.4E-07 NA NA 4.4E-07 NA NA NA NA 0.0E+00
Nondioxin-Like 2.7E-07 NA NA 2.7E-07 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 3.3E-01 NA NA 3.3E-01
Arsenic 6.7E-08 NA NA 6.7E-08 Skin, Vascular 3.5E-03 NA NA 3.5E-03
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.1E-02 NA NA 3.1E-02
Selenium NA NA NA 0.0E+00 Whole Body 3.7E-03 NA NA 3.7E-03
Chemical Total 7.8E-07 NA NA 7.8E-07 3.7E-01 NA NA 3.7E-01
Striped Bass in Gowanus Canal Total 7.8E-07 3.7E-01
Surface
Water/Sediment
Fish and Crab
Tissue
White Perch in
Gowanus Canal
Dioxin-Like PCB TEQ 6.2E-08 NA NA 6.2E-08 NA NA NA NA 0.0E+00
Nondioxin-Like 3.0E-08 NA NA 3.0E-08 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 3.7E-02 NA NA 3.7E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.0E-03 NA NA 3.0E-03
Selenium NA NA NA 0.0E+00 Whole Body 4.5E-04 NA NA 4.5E-04
Chemical Total 9.2E-08 NA NA 9.2E-08 4.1E-02 NA NA 4.1E-02
White Perch in Gowanus Canal Total 9.2E-08 4.1E-02
TABLE 9.8.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
alpha-Chlordane 4.3E-09 NA NA 4.3E-09 Liver 5.7E-04 NA NA 5.7E-04
Dieldrin 1.5E-07 NA NA 1.5E-07 Liver 4.4E-03 NA NA 4.4E-03
gamma-Chlordane 2.5E-09 NA NA 2.5E-09 Liver 3.4E-04 NA NA 3.4E-04
p,p'-DDD 5.1E-09 NA NA 5.1E-09 NA NA NA NA 0.0E+00
p,p'-DDE 4.7E-09 NA NA 4.7E-09 NA NA NA NA 0.0E+00
p,p'-DDT 8.9E-09 NA NA 8.9E-09 Liver 1.2E-03 NA NA 1.2E-03
Dioxin-Like PCB TEQ 1.2E-06 NA NA 1.2E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 6.8E-07 NA NA 6.8E-07 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 8.7E-01 NA NA 8.7E-01
Arsenic 4.2E-08 NA NA 4.2E-08 Skin, Vascular 2.2E-03 NA NA 2.2E-03
Chromium (12-15)* 5.6E-07 NA NA 5.6E-07 Not identified 2.9E-03 NA NA 2.9E-03
Copper NA NA NA 0.0E+00 Gastrointestinal 2.4E-03 NA NA 2.4E-03
Cyanide, total NA NA NA 0.0E+00 Weight Loss, Thyroid 2.0E-03 NA NA 2.0E-03
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.4E-02 NA NA 3.4E-02
Selenium NA NA NA 0.0E+00 Whole Body 3.6E-03 NA NA 3.6E-03
Chemical Total 2.7E-06 NA NA 2.7E-06 9.3E-01 NA NA 9.3E-01
Eel in Gowanus Canal Total 2.7E-06 9.3E-01
TABLE 9.8.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Benzo(a)anthracene (12-15)* 1.3E-07 NA NA 1.3E-07 NA NA NA NA 0.0E+00
Benzo(a)pyrene (12-15)* 2.0E-06 NA NA 2.0E-06 NA NA NA NA 0.0E+00
Benzo(b)fluoranthene (12-15)* 1.1E-07 NA NA 1.1E-07 NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene (12-15)* 6.7E-07 NA NA 6.7E-07 NA NA NA NA 0.0E+00
Indeno(1,2,3-cd)pyrene (12-15)* 1.7E-07 NA NA 1.7E-07 NA NA NA NA 0.0E+00
Dioxin-Like PCB TEQ 6.1E-06 NA NA 6.1E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 1.1E-06 NA NA 1.1E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 3.0E-01 NA NA 3.0E-01
Arsenic 1.5E-06 NA NA 1.5E-06 Skin, Vascular 7.9E-02 NA NA 7.9E-02
Copper NA NA NA 0.0E+00 Gastrointestinal 4.6E-02 NA NA 4.6E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 2.2E-01 NA NA 2.2E-01
Chemical Total 1.2E-05 NA NA 1.2E-05 6.5E-01 NA NA 6.5E-01
Crab in Gowanus Canal Total 1.2E-05 6.5E-01
Receptor Total - Fish 3.5E-06 Receptor HI Total - Fiish 1.3E+00
Receptor Total - Blue Crab 1.2E-05 Receptor HI Total - Blue Crab 6.5E-01
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Body Weight HI Across All Media = 2.0E-03 Total Developmental HI Across All Media = 2.2E-01
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 3 used Total Developmental HI Across All Media = 6.7E-02 Total Finger and Toe Nails HI Across All Media = 3.0E-01
to adjust CSF for 12-15 year old for exposure duration of 3 years, Total Finger and Toe Nails HI Across All Media = 1.2E+00 Total Gastrointestinal HI Across All Media = 4.6E-02
the CTE exposure duration for an adolescent. Total Gastrointestinal HI Across All Media = 2.4E-03 Total Neurological HI Across All Media = 2.2E-01
Total Liver HI Across All Media = 6.8E-03 Total Ocular HI Across All Media = 3.0E-01
Total Neurological HI Across All Media = 6.7E-02 Total Skin HI Across All Media = 7.9E-02
Total Ocular HI Across All Media = 1.2E+00 Total Vascular HI Across All Media = 7.9E-02
Total Skin HI Across All Media = 5.6E-03
Total Thyroid HI Across All Media = 2.0E-03
Total Vascular HI Across All Media = 5.6E-03
Total Whole Body HI Across All Media = 7.7E-03
TABLE 9.9.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
p,p'-DDE 5.2E-09 NA NA 5.2E-09 NA NA NA NA 0.0E+00
p,p'-DDT 4.1E-09 NA NA 4.1E-09 Liver 5.7E-04 NA NA 5.7E-04
Dioxin-Like PCB TEQ 8.5E-07 NA NA 8.5E-07 NA NA NA NA 0.0E+00
Nondioxin-Like 5.2E-07 NA NA 5.2E-07 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 6.4E-01 NA NA 6.4E-01
Arsenic 1.3E-07 NA NA 1.3E-07 Skin, Vascular 6.7E-03 NA NA 6.7E-03
Mercury NA NA NA 0.0E+00 Developmental Neurological 5.9E-02 NA NA 5.9E-02
Selenium NA NA NA 0.0E+00 Whole Body 7.1E-03 NA NA 7.1E-03
Chemical Total 1.5E-06 NA NA 1.5E-06 7.2E-01 NA NA 7.2E-01
Striped Bass in Gowanus Canal Total 1.5E-06 7.2E-01
Surface
Water/Sediment
Fish and Crab
Tissue
White Perch in
Gowanus Canal
Dioxin-Like PCB TEQ 1.3E-07 NA NA 1.3E-07 NA NA NA NA 0.0E+00
Nondioxin-Like 6.1E-08 NA NA 6.1E-08 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 7.5E-02 NA NA 7.5E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 6.2E-03 NA NA 6.2E-03
Selenium NA NA NA 0.0E+00 Whole Body 9.1E-04 NA NA 9.1E-04
Chemical Total 1.9E-07 NA NA 1.9E-07 8.2E-02 NA NA 8.2E-02
White Perch in Gowanus Canal Total 1.9E-07 8.2E-02
TABLE 9.9.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
alpha-Chlordane 8.6E-09 NA NA 8.6E-09 Liver 1.1E-03 NA NA 1.1E-03
Dieldrin 3.0E-07 NA NA 3.0E-07 Liver 8.9E-03 NA NA 8.9E-03
gamma-Chlordane 5.1E-09 NA NA 5.1E-09 Liver 6.8E-04 NA NA 6.8E-04
p,p'-DDD 1.0E-08 NA NA 1.0E-08 NA NA NA NA 0.0E+00
p,p'-DDE 9.5E-09 NA NA 9.5E-09 NA NA NA NA 0.0E+00
p,p'-DDT 1.8E-08 NA NA 1.8E-08 Liver 2.5E-03 NA NA 2.5E-03
Dioxin-Like PCB TEQ 2.5E-06 NA NA 2.5E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 1.4E-06 NA NA 1.4E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.8E+00 NA NA 1.8E+00
Arsenic 8.4E-08 NA NA 8.4E-08 Skin, Vascular 4.4E-03 NA NA 4.4E-03
Chromium (0-2)* 2.5E-06 NA NA 2.5E-06 Not identified 5.8E-03 NA NA 5.8E-03
Chromium (2-3)* 3.8E-07 NA NA 3.8E-07
Copper NA NA NA 0.0E+00 Gastrointestinal 4.8E-03 NA NA 4.8E-03
Cyanide, total NA NA NA 0.0E+00 Weight Loss, Thyroid 4.1E-03 NA NA 4.1E-03
Mercury NA NA NA 0.0E+00 Developmental Neurological 6.8E-02 NA NA 6.8E-02
Selenium NA NA NA 0.0E+00 Whole Body 7.3E-03 NA NA 7.3E-03
Chemical Total 7.1E-06 NA NA 7.1E-06 1.9E+00 NA NA 1.9E+00
Eel in Gowanus Canal Total 7.1E-06 1.9E+00
TABLE 9.9.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Benzo(a)anthracene (0-2)* 5.7E-07 NA NA 5.7E-07 NA NA NA NA 0.0E+00
Benzo(a)anthracene (2-3)* 8.5E-08 NA NA 8.5E-08
Benzo(a)pyrene (0-2)* 8.7E-06 NA NA 8.7E-06 NA NA NA NA 0.0E+00
Benzo(a)pyrene (2-3)* 1.3E-06 NA NA 1.3E-06
Benzo(b)fluoranthene (0-2)* 4.7E-07 NA NA 4.7E-07 NA NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-3)* 7.1E-08 NA NA 7.1E-08
Dibenz(a,h)anthracene (0-2)* 2.9E-06 NA NA 2.9E-06 NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene (2-3)* 4.4E-07 NA NA 4.4E-07
Indeno(1,2,3-cd)pyrene (0-2)* 7.3E-07 NA NA 7.3E-07 NA NA NA NA 0.0E+00
Indeno(1,2,3-cd)pyrene (2-3)* 1.1E-07 NA NA 1.1E-07
Dioxin-Like PCB TEQ 1.2E-05 NA NA 1.2E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 2.2E-06 NA NA 2.2E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 2.9E+00 NA NA 2.9E+00
Arsenic 3.0E-06 NA NA 3.0E-06 Skin, Vascular 1.5E-01 NA NA 1.5E-01
Copper NA NA NA 0.0E+00 Gastrointestinal 9.0E-02 NA NA 9.0E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 4.4E-01 NA NA 4.4E-01
Chemical Total 3.2E-05 NA NA 3.2E-05 3.6E+00 NA NA 3.6E+00
Crab in Gowanus Canal Total 3.2E-05 3.6E+00
Receptor Total - Fish 8.8E-06 Receptor HI Total - Fiish 2.7E+00
Receptor Total - Blue Crab 3.2E-05 Receptor HI Total - Blue Crab 3.6E+00
TABLE 9.9.CTE
SUMMARY OF RECEPTOR RISKS AND HAZARDS FOR COPCs
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Body Weight HI Across All Media = 4.1E-03 Total Developmental HI Across All Media = 4.4E-01
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used Total Developmental HI Across All Media = 1.3E-01 Total Finger and Toe Nails HI Across All Media = 2.9E+00
to adjust CSF for 0-2 year old for exposure duration of 2 years, ADAF of 3 Total Finger and Toe Nails HI Across All Media = 2.5E+00 Total Gastrointestinal HI Across All Media = 9.0E-02
used to adjust CSF for 2-3 year old for exposure duration of 1 year, for a total Total Gastrointestinal HI Across All Media = 4.8E-03 Total Neurological HI Across All Media = 4.4E-01
CTE exposure duration of 3 years. Non-cancer calculations shown under Total Liver HI Across All Media = 1.4E-02 Total Ocular HI Across All Media = 2.9E+00
0-2 year old only, as non-cancer calculations are not adjusted for MMOA. Total Neurological HI Across All Media = 1.3E-01 Total Skin HI Across All Media = 1.5E-01
Total Ocular HI Across All Media = 2.5E+00 Total Vascular HI Across All Media = 1.5E-01
Total Skin HI Across All Media = 1.1E-02
Total Thyroid HI Across All Media = 4.1E-03
Total Vascular HI Across All Media = 1.1E-02
Total Whole Body HI Across All Media = 1.5E-02
TABLE 10.1.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Benzo(a)anthracene 1.6E-06 NA 8.7E-06 1.0E-05 NA NA NA 0.0E+00
Benzo(a)pyrene 1.4E-05 NA 7.4E-05 8.7E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene 1.4E-06 NA 7.8E-06 9.2E-06 NA NA NA 0.0E+00
Dibenz(a,h)anthracene 7.9E-07 NA 4.3E-06 5.0E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene 6.2E-07 NA 3.4E-06 4.0E-06 NA NA NA 0.0E+00
Nondioxin-Like PCB 1.8E-07 NA 1.1E-06 1.2E-06 NA NA NA 0.0E+00
Arsenic 4.7E-07 NA 5.9E-07 1.1E-06 Skin, Vascular 3.1E-03 NA 3.8E-03 6.9E-03
Chromium 8.2E-07 NA 1.4E-05 1.4E-05 Not identified 1.6E-03 NA 2.6E-02 2.8E-02
Chemical Total 2.0E-05 NA 1.1E-04 1.3E-04 4.6E-03 NA 3.0E-02 3.5E-02
Exposed Surface Sediment Total 1.3E-04 3.5E-02
Surface Water Surface Water Gowanus Canal
(Dry event) Benzo(a)anthracene 8.8E-09 NA 3.6E-06 3.6E-06 NA NA NA 0.0E+00
Benzo(a)pyrene 2.2E-07 NA 1.5E-04 1.6E-04 NA NA NA 0.0E+00
Benzo(b)fluoranthene 9.9E-09 NA 7.1E-06 7.1E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene 4.4E-09 NA 3.1E-06 3.2E-06 NA NA NA 0.0E+00
Arsenic 1.4E-06 NA 4.9E-07 1.8E-06 Skin, Vascular 8.8E-03 NA 3.2E-03 1.2E-02
Chromium 4.3E-07 NA 1.2E-05 1.3E-05 Not identified 8.3E-04 NA 2.4E-02 2.5E-02
Chemical Total 2.0E-06 NA 1.8E-04 1.8E-04 9.6E-03 NA 2.7E-02 3.7E-02
Surface Water Total - Dry Event 1.8E-04 3.7E-02
TABLE 10.1.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Wet event) Tetrachloroethylene(PCE) 6.0E-07 NA 1.2E-05 1.2E-05 Liver 3.2E-04 NA 6.4E-03 6.7E-03
Benzo(a)anthracene 3.4E-09 NA 1.4E-06 1.4E-06 NA NA NA 0.0E+00
Benzo(a)pyrene 6.8E-08 NA 4.8E-05 4.8E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene 6.3E-09 NA 4.5E-06 4.5E-06 NA NA NA 0.0E+00
Dibenz(a,h)anthracene 3.3E-08 NA 3.7E-05 3.7E-05 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene 1.7E-08 NA 1.2E-05 1.2E-05 NA NA NA 0.0E+00
Arsenic 1.1E-06 NA 4.1E-07 1.5E-06 Skin, Vascular 7.3E-03 NA 2.6E-03 1.0E-02
Chromium 1.9E-07 NA 5.6E-06 5.8E-06 Not identified 3.8E-04 NA 1.1E-02 1.1E-02
Chemical Total 2.0E-06 NA 1.2E-04 1.2E-04 8.0E-03 NA 2.0E-02 2.8E-02
Surface Water Total - Wet Event 1.2E-04 2.8E-02
Receptor Total 3.2E-04 Receptor HI Total 7.2E-02
HI - Hazard Index Total Skin HI Across All Media = 1.9E-02
CNS - Central Nervous System Total Vascular HI Across All Media = 1.9E-02
Receptor Total and target organ total includes sum of exposed and near shore sediment and maximum of dry event and wet event surface water.
TABLE 10.2.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Benzo(a)anthracene (12-16)* 9.9E-07 NA 5.4E-06 6.4E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (16-18)* 1.7E-07 NA 9.0E-07 1.1E-06
Benzo(a)pyrene (12-16)* 8.4E-06 NA 4.6E-05 5.4E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (16-18)* 1.4E-06 NA 7.6E-06 9.0E-06
Benzo(b)fluoranthene (12-16)* 8.8E-07 NA 4.8E-06 5.7E-06 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (12-16)* 4.8E-07 NA 2.6E-06 3.1E-06 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (16-18)* 8.1E-08 NA 4.4E-07 5.2E-07
Indeno(1,2,3-c,d)pyrene (12-16)* 3.8E-07 NA 2.1E-06 2.5E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (16-18)* 6.4E-08 NA 3.5E-07 4.1E-07
Chromium (12-16)* 5.0E-07 NA 8.4E-06 8.9E-06 Not identified 1.9E-03 NA 3.3E-02 3.5E-02
Chromium (16-18)* 8.3E-08 NA 1.4E-06 1.5E-06
Chemical Total 1.3E-05 NA 8.0E-05 9.3E-05 1.9E-03 NA 3.3E-02 3.5E-02
Exposed Surface Sediment Total 9.3E-05 3.5E-02
Surface Water Surface Water Gowanus Canal
(Dry event) Benzo(a)anthracene (12-16)* 5.4E-09 NA 2.0E-06 2.0E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (16-18)* 9.0E-10 NA 3.3E-07 3.3E-07
Benzo(a)pyrene (12-16)* 1.3E-07 NA 8.3E-05 8.3E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (16-18)* 2.2E-08 NA 1.4E-05 1.4E-05
Benzo(b)fluoranthene (12-16)* 6.1E-09 NA 3.8E-06 3.8E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (16-18)* 1.0E-09 NA 6.4E-07 6.4E-07
Indeno(1,2,3-c,d)pyrene (12-16)* 2.7E-09 NA 1.7E-06 1.7E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (16-18)* 4.5E-10 NA 2.8E-07 2.8E-07
Chromium (12-16)* 2.6E-07 NA 6.6E-06 6.9E-06 Not identified 1.0E-03 NA 2.6E-02 2.7E-02
Chromium (16-18)* 4.4E-08 NA 1.1E-06 1.1E-06
Chemical Total 4.8E-07 NA 1.1E-04 1.1E-04 1.0E-03 NA 2.6E-02 2.7E-02
Surface Water Total - Dry Event 1.1E-04 2.7E-02
TABLE 10.2.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Wet event) Tetrachloroethylene(PCE) 1.8E-07 NA 3.2E-06 3.4E-06 Liver 4.0E-04 NA 6.9E-03 7.3E-03
Benzo(a)anthracene (12-16)* 2.1E-09 NA 7.6E-07 7.7E-07 NA NA NA 0.0E+00
Benzo(a)anthracene (16-18)* 3.5E-10 NA 4.3E-07 4.3E-07
Benzo(a)pyrene (12-16)* 4.2E-08 NA 2.6E-05 2.6E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (16-18)* 6.9E-09 NA 4.0E-06 4.0E-06
Benzo(b)fluoranthene (12-16)* 3.8E-09 NA 2.4E-06 2.4E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (16-18)* 6.4E-10 NA 3.3E-07 3.3E-07
Dibenz(a,h)anthracene (12-16)* 2.1E-08 NA 2.0E-05 2.0E-05 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (16-18)* 3.4E-09 NA 1.1E-05 1.1E-05
Indeno(1,2,3-c,d)pyrene (12-16)* 1.0E-08 NA 6.4E-06 6.4E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (16-18)* 1.7E-09 NA 2.5E-08 2.6E-08
Chromium (12-16)* 1.2E-07 NA 3.0E-06 3.1E-06 Not identified 4.6E-04 NA 1.2E-02 1.2E-02
Chromium (16-18)* 2.0E-08 NA 5.0E-07 5.2E-07
Chemical Total 4.1E-07 NA 7.7E-05 7.8E-05 8.6E-04 NA 1.9E-02 1.9E-02
Surface Water Total - Wet Event 7.8E-05 1.9E-02
Receptor Total 2.1E-04 Receptor HI Total 6.1E-02
HI - Hazard Index Total Liver HI Across All Media = 7.3E-03
CNS - Central Nervous System
Receptor Total and target organ total includes sum of exposed and near shore sediment and maximum of dry event and wet event surface water.
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 3 used to adjust CSF for 12-16 year old for exposure duration of 4 years,
ADAF of 1 used to adjust CSF for 16-18 year old for exposure duration of 2 years. Non-cancer calculations shown under 12-16 year old only,
as non-cancer calculations are not adjusted for MMOA.
TABLE 10.3.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Benzo(a)anthracene (0-2)* 1.3E-05 NA 9.2E-06 2.2E-05 NA NA NA 0.0E+00
Benzo(a)anthracene (2-6)* 7.5E-06 NA 5.5E-06 1.3E-05
Benzo(a)pyrene (0-2)* 1.1E-04 NA 7.7E-05 1.8E-04 NA NA NA 0.0E+00
Benzo(a)pyrene (2-6)* 6.4E-05 NA 4.6E-05 1.1E-04
Benzo(b)fluoranthene (0-2)* 1.1E-05 NA 8.1E-06 1.9E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-6)* 6.7E-06 NA 4.9E-06 1.2E-05
Benzo(k)fluoranthene (0-2)* 6.4E-07 NA 4.7E-07 1.1E-06 NA NA NA 0.0E+00
Benzo(k)fluoranthene (2-6)* 3.8E-07 NA 2.8E-07 6.6E-07
Dibenz(a,h)anthracene (0-2)* 6.1E-06 NA 4.5E-06 1.1E-05 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (2-6)* 3.7E-06 NA 2.7E-06 6.3E-06
Fluoranthene NA NA NA 0.0E+00 Kidney, Liver, Blood 5.9E-03 NA 4.3E-03 1.0E-02
Indeno(1,2,3-c,d)pyrene (0-2)* 4.8E-06 NA 3.5E-06 8.4E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-6)* 2.9E-06 NA 2.1E-06 5.0E-06
Arsenic 1.1E-06 NA 1.8E-07 1.3E-06 Skin, Vascular 2.8E-02 NA 4.8E-03 3.3E-02
Chromium 6.3E-06 NA 1.4E-05 2.1E-05 Not identified 1.5E-02 NA 3.3E-02 4.8E-02
3.8E-06 NA 8.5E-06 1.2E-05
Chemical Total 2.4E-04 NA 1.9E-04 4.2E-04 4.9E-02 NA 4.2E-02 9.1E-02
Exposed Surface Sediment Total 4.2E-04 9.1E-02
Surface Water Surface Water Gowanus Canal
(Dry event) Benzo(a)anthracene (0-2)* 3.4E-08 NA 5.2E-06 5.2E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (2-6)* 2.1E-08 NA 3.1E-06 3.1E-06
Benzo(a)pyrene (0-2)* 8.5E-07 NA 2.2E-04 2.2E-04 NA NA NA 0.0E+00
Benzo(a)pyrene (2-6)* 5.1E-07 NA 1.3E-04 1.3E-04
Benzo(b)fluoranthene (0-2)* 3.8E-08 NA 1.0E-05 1.0E-05 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-6)* 2.3E-08 NA 6.1E-06 6.1E-06
Indeno(1,2,3-c,d)pyrene (0-2)* 1.7E-08 NA 4.5E-06 4.5E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-6)* 1.0E-08 NA 2.7E-06 2.7E-06
Arsenic 1.6E-06 NA 2.1E-07 1.8E-06 Skin, Vascular 4.1E-02 NA 5.4E-03 4.6E-02
Chromium (0-2)* 1.7E-06 NA 1.8E-05 1.9E-05 Not identified 3.9E-03 NA 4.1E-02 4.5E-02
Chromium (2-6)* 1.0E-06 NA 1.1E-05 1.2E-05
Chemical Total 5.7E-06 NA 4.1E-04 4.2E-04 4.5E-02 NA 4.6E-02 9.1E-02
Surface Water Total - Dry Event 4.2E-04 9.1E-02
TABLE 10.3.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Wet event) Tetrachloroethylene(PCE) 7.0E-07 NA 5.1E-06 5.8E-06 Liver 1.5E-03 NA 1.1E-02 1.2E-02
Benzo(a)anthracene (0-2)* 1.3E-08 NA 2.0E-06 2.0E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (2-6)* 8.0E-09 NA 1.2E-06 1.2E-06
Benzo(a)pyrene (0-2)* 2.6E-07 NA 6.9E-05 6.9E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (2-6)* 1.6E-07 NA 4.1E-05 4.1E-05
Benzo(b)fluoranthene (0-2)* 2.4E-08 NA 6.4E-06 6.4E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-6)* 1.5E-08 NA 3.8E-06 3.9E-06
Dibenz(a,h)anthracene (0-2)* 1.3E-07 NA 5.2E-05 5.2E-05 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (2-6)* 7.8E-08 NA 3.1E-05 3.1E-05
Indeno(1,2,3-c,d)pyrene (0-2)* 6.4E-08 NA 1.7E-05 1.7E-05 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-6)* 3.9E-08 NA 1.0E-05 1.0E-05
Arsenic 1.3E-06 NA 1.7E-07 1.5E-06 Skin, Vascular 3.4E-02 NA 4.5E-03 3.9E-02
Chromium (0-2)* 7.5E-07 NA 7.9E-06 8.7E-06 Not identified 1.8E-03 NA 1.9E-02 2.0E-02
Chromium (2-6)* 4.5E-07 NA 4.8E-06 5.2E-06
Chemical Total 4.0E-06 NA 2.5E-04 2.6E-04 3.7E-02 NA 3.4E-02 7.1E-02
Surface Water Total - Wet Event 2.6E-04 7.1E-02
Receptor Total 8.4E-04 Receptor HI Total 1.8E-01
HI - Hazard Index Total Blood HI Across All Media = 1.0E-02
CNS - Central Nervous System Total Kidney HI Across All Media = 1.0E-02
Receptor Total and target organ total includes sum of exposed and near shore sediment and maximum of dry event and wet event surface water. Total Liver HI Across All Media = 2.3E-02
Total Skin HI Across All Media = 8.0E-02
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used to adjust CSF for 0-2 year old for exposure duration of 2 years, Total Vascular HI Across All Media = 8.0E-02
ADAF of 3 used to adjust CSF for 2-6 year old for exposure duration of 4 years. Non-cancer calculations shown under 0-2 year old only,
as non-cancer calculations are not adjusted for MMOA. as non-cancer calculations are not adjusted for MMOA.
TABLE 10.4.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at street
level
(pre-aeration system
operation) Naphthalene NA NA NA Nasal, Respiratory NA 4.2E-01 NA 4.2E-01
Chemical Total NA NA NA NA 4.2E-01 NA 4.2E-01
Ambient air at street level Total - Pre-aeration system operation 4.2E-01
Air Air
Ambient air at canal
level
(after aeration system
started) Naphthalene NA NA NA Nasal, Respiratory NA 9.7E-01 NA 9.7E-01
Chemical Total NA NA NA NA 9.7E-01 NA 9.7E-01
Ambient air at street level Total - After aeration system turned on 9.7E-01
Receptor Total Receptor HI Total 9.7E-01
HI - Hazard Index Total Nasal HI Across All Media = 9.7E-01
CNS - Central Nervous System Total Respiratory HI Across All Media = 9.7E-01
Receptor Total and target organ totals includes maximum between air prior to and after aeration system operation.
TABLE 10.5.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at street
level
(pre-aeration system
operation) Naphthalene NA NA NA Nasal, Respiratory NA 4.2E-01 NA 4.2E-01
Chemical Total NA NA NA NA 4.2E-01 NA 4.2E-01
Ambient air at street level Total - Pre-aeration system operation 4.2E-01
Air Air
Ambient air at canal
level
(after aeration system
started) Naphthalene NA NA NA Nasal, Respiratory NA 9.7E-01 NA 9.7E-01
Chemical Total NA NA NA NA 9.7E-01 NA 9.7E-01
Ambient air at street level Total - After aeration system turned on 9.7E-01
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal Total PCB NA NA NA Ocular, Finger and Toe Nails 1.1E-01 NA 4.3E-02 1.5E-01
Chemical Total NA NA NA 1.1E-01 NA 4.3E-02 1.5E-01
Overflow Surface Sediment Total 1.5E-01
Receptor Total Receptor HI Total 1.1E+00
HI - Hazard Index Total Finger and Toe Nails HI Across All Media = 1.5E-01
CNS - Central Nervous System Total Nasal HI Across All Media = 9.7E-01
Receptor Total and target organ totals includes maximum between air prior to and after aeration system operation, and sediment. Total Ocular HI Across All Media = 1.5E-01
Total Respiratory HI Across All Media = 9.7E-01
TABLE 10.6.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Air Air
Ambient air at street
level
(pre-aeration system Benzene NA 2.9E-06 NA 2.9E-06 Blood NA NA NA
operation) Chloroform NA 1.7E-06 NA 1.7E-06 Liver NA NA NA
Naphthalene NA 1.3E-05 NA 1.3E-05 Nasal, Respiratory NA NA NA
Chemical Total NA 1.8E-05 NA 1.8E-05 NA NA NA
Ambient air at street level Total - Pre-aeration system operation 1.8E-05
Air Air
Ambient air at canal
level
(after aeration system Benzene NA 2.5E-06 NA 2.5E-06 Blood NA NA NA
started) Chloroform NA 2.2E-06 NA 2.2E-06 Liver NA NA NA
Naphthalene NA 3.0E-05 NA 3.0E-05 Nasal, Respiratory NA NA NA
Chemical Total NA 3.5E-05 NA 3.5E-05 NA NA NA
Ambient air at street level Total - After aeration system turned on 3.5E-05
SedimentOverflow Surface
Sediment
Sediment deposited in
areas adjacent to
Gowanus Canal
associated with canal Benzo(a)anthracene1
1.6E-05 NA 8.2E-06 2.4E-05 NA NA NA
Benzo(a)pyrene19.2E-05 NA 4.7E-05 1.4E-04 NA NA NA
Benzo(b)fluoranthene11.0E-05 NA 5.1E-06 1.5E-05 NA NA NA
Dibenz(a,h)anthracene16.9E-06 NA 3.5E-06 1.0E-05 NA NA NA
Indeno(1,2,3-c,d)pyrene14.0E-06 NA 2.0E-06 6.0E-06 NA NA NA
Arsenic 8.9E-07 NA 1.4E-07 1.0E-06 Skin, Vascular NA NA NA
Chromium17.3E-08 NA 1.1E-06 1.2E-06 Not identified NA NA NA
Chemical Total 1.3E-04 NA 6.7E-05 2.0E-04 NA NA NA
Overflow Surface Sediment Total 2.0E-04
TABLE 10.6.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Resident
Receptor Age: Child/Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water
Overflow Surface
Water
Canal Overflow -
Surface Water
Tetrachloroethylene(PCE) 4.5E-07 NA 2.0E-06 2.5E-06 Liver NA NA NA
Benzo(a)pyrene11.9E-07 NA 2.6E-05 2.6E-05 NA NA NA
Benzo(b)fluoranthene11.7E-08 NA 2.4E-06 2.4E-06 NA NA NA
Dibenz(a,h)anthracene19.3E-08 NA 2.0E-05 2.0E-05 NA NA NA
Indeno(1,2,3-c,d)pyrene14.6E-08 NA 6.4E-06 6.4E-06 NA NA NA
Chromium15.4E-07 NA 3.6E-06 4.2E-06 Not identified NA NA NA
Chemical Total 1.3E-06 NA 6.0E-05 6.1E-05 NA NA NA
Overflow Surface Water Total 6.1E-05
Receptor Total 2.9E-04 Receptor HI Total
Receptor Total includes maximum between air prior to and after aeration system operation, and surface water, and sediment.
1. Constituent acts via a mutagenic mode of action (MMOA). See Table 7.7.RME Supplement A for calculation of intake and cancer risk following MMOA method.
TABLE 10.7.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
Dioxin-Like PCB TEQ 4.0E-05 NA NA 4.0E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 4.9E-05 NA NA 4.9E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 3.8E+00 NA NA 3.8E+00
Arsenic 6.1E-06 NA NA 6.1E-06 Skin, Vascular 4.0E-02 NA NA 4.0E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.5E-01 NA NA 3.5E-01
Chemical Total 9.5E-05 NA NA 9.5E-05 4.2E+00 NA NA 4.2E+00
Striped Bass in Gowanus Canal Total 9.5E-05 4.2E+00
Surface
Water/Sediment
Fish and Crab
Tissue
White Perch in
Gowanus Canal
Dioxin-Like PCB TEQ 9.9E-06 NA NA 9.9E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 9.6E-06 NA NA 9.6E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 7.7E-01 NA NA 7.7E-01
Chemical Total 2.0E-05 NA NA 2.0E-05 7.7E-01 NA NA 7.7E-01
White Perch in Gowanus Canal Total 2.0E-05 7.7E-01
TABLE 10.7.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
Dieldrin 1.5E-05 NA NA 1.5E-05 Liver 5.6E-02 NA NA 5.6E-02
Dioxin-Like PCB TEQ 1.2E-04 NA NA 1.2E-04 NA NA NA NA 0.0E+00
Nondioxin-Like 1.4E-04 NA NA 1.4E-04 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.1E+01 NA NA 1.1E+01
Arsenic 4.2E-06 NA NA 4.2E-06 Skin, Vascular 2.7E-02 NA NA 2.7E-02
Chromium 1.9E-05 NA NA 1.9E-05 Not identified 3.6E-02 NA NA 3.6E-02
Mercury NA NA NA 0.0E+00 #REF! 4.2E-01 NA NA 4.2E-01
Chemical Total 3.0E-04 NA NA 3.0E-04 1.2E+01 NA NA 1.2E+01
Eel in Gowanus Canal Total 3.0E-04 1.2E+01
TABLE 10.7.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Benzo(a)pyrene 9.7E-06 NA NA 9.7E-06 NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene 3.2E-06 NA NA 3.2E-06 NA NA NA NA 0.0E+00
Dioxin-Like PCB TEQ 8.9E-05 NA NA 8.9E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 3.2E-05 NA NA 3.2E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 2.7E+00 NA NA 2.7E+00
Arsenic 2.2E-05 NA NA 2.2E-05 Skin, Vascular 1.4E-01 NA NA 1.4E-01
Mercury NA NA NA 0.0E+00 #REF! 4.1E-01 NA NA 4.1E-01
Chemical Total 1.6E-04 NA NA 1.6E-04 3.3E+00 NA NA 3.3E+00
Crab in Gowanus Canal Total 1.6E-04 3.3E+00
Receptor Total - Fish 4.1E-04 Receptor HI Total - Fiish 1.7E+01
Receptor Total - Blue Crab 1.6E-04 Receptor HI Total - Blue Crab 3.3E+00
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Developmental HI Across All Media = 3.5E-01 Total Developmental HI Across All Media = 4.1E-01
Total Finger and Toe Nails HI Across All Media = 1.6E+01 Total Finger and Toe Nails HI Across All Media = 2.7E+00
Total Liver HI Across All Media = 5.6E-02 Total Neurological HI Across All Media = 4.1E-01
Total Neurological HI Across All Media = 7.7E-01 Total Ocular HI Across All Media = 2.7E+00
Total Ocular HI Across All Media = 1.6E+01 Total Skin HI Across All Media = 1.4E-01
Total Skin HI Across All Media = 6.7E-02 Total Vascular HI Across All Media = 1.4E-01
Total Vascular HI Across All Media = 6.7E-02
TABLE 10.8.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
Dioxin-Like PCB TEQ 8.1E-06 NA NA 8.1E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 9.8E-06 NA NA 9.8E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 3.0E+00 NA NA 3.0E+00
Arsenic 1.2E-06 NA NA 1.2E-06 Skin, Vascular 3.2E-02 NA NA 3.2E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 2.8E-01 NA NA 2.8E-01
Chemical Total 1.9E-05 NA NA 1.9E-05 3.4E+00 NA NA 3.4E+00
Striped Bass in Gowanus Canal Total 1.9E-05 3.4E+00
Surface
Water/Sediment
Fish and Crab
Tissue
White Perch in
Gowanus Canal
Dioxin-Like PCB TEQ 2.1E-06 NA NA 2.1E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 2.0E-06 NA NA 2.0E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 6.2E-01 NA NA 6.2E-01
Chemical Total 4.1E-06 NA NA 4.1E-06 6.2E-01 NA NA 6.2E-01
White Perch in Gowanus Canal Total 4.1E-06 6.2E-01
TABLE 10.8.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
Dieldrin 3.1E-06 NA NA 3.1E-06 Liver 4.5E-02 NA NA 4.5E-02
Dioxin-Like PCB TEQ 2.5E-05 NA NA 2.5E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 2.7E-05 NA NA 2.7E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 8.9E+00 NA NA 8.9E+00
Chromium (12-16)* 7.5E-06 NA NA 7.5E-06 Not identified 2.9E-02 NA NA 2.9E-02
Chromium (16-18)* 1.3E-06 NA NA 1.3E-06
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.4E-01 NA NA 3.4E-01
Chemical Total 6.4E-05 NA NA 6.4E-05 9.3E+00 NA NA 9.3E+00
Eel in Gowanus Canal Total 6.4E-05 9.3E+00
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Benzo(a)pyrene (12-16)* 3.9E-06 NA NA 3.9E-06 NA NA NA NA 0.0E+00
Benzo(a)pyrene (16-18)* 6.5E-07 NA NA 6.5E-07
Dibenz(a,h)anthracene (12-16)* 1.3E-06 NA NA 1.3E-06 NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene (16-18)* 2.2E-07 NA NA 2.2E-07
Dioxin-Like PCB TEQ 1.8E-05 NA NA 1.8E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 6.5E-06 NA NA 6.5E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 2.2E+00 NA NA 2.2E+00
Arsenic 4.4E-06 NA NA 4.4E-06 Skin, Vascular 1.1E-01 NA NA 1.1E-01
Mercury NA NA NA 0.0E+00 Developmental Neurological 3.3E-01 NA NA 3.3E-01
Chemical Total 3.5E-05 NA NA 3.5E-05 2.6E+00 NA NA 2.6E+00
Crab in Gowanus Canal Total 3.5E-05 2.6E+00
Receptor Total - Fish 8.7E-05 Receptor HI Total - Fiish 1.3E+01
Receptor Total - Blue Crab 3.5E-05 Receptor HI Total - Blue Crab 2.6E+00
TABLE 10.8.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adolescent
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Developmental HI Across All Media = 6.2E-01 Total Developmental HI Across All Media = 3.3E-01
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 3 Total Finger and Toe Nails HI Across All Media = 1.3E+01 Total Finger and Toe Nails HI Across All Media = 2.2E+00
used to adjust CSF for 12-16 year old for exposure duration of 4 years, Total Liver HI Across All Media = 4.5E-02 Total Neurological HI Across All Media = 3.3E-01
ADAF of 1 used to adjust CSF for 16-18 year old for exposure duration Total Neurological HI Across All Media = 6.2E-01 Total Ocular HI Across All Media = 2.2E+00
of 2 years. Non-cancer calculations shown under 12-16 year old only, Total Ocular HI Across All Media = 1.3E+01 Total Skin HI Across All Media = 1.1E-01
as non-cancer calculations are not adjusted for MMOA. Total Skin HI Across All Media = 3.2E-02 Total Vascular HI Across All Media = 1.1E-01
Total Vascular HI Across All Media = 3.2E-02
TABLE 10.9.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
Dioxin-Like PCB TEQ 1.6E-05 NA NA 1.6E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 2.0E-05 NA NA 2.0E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 6.1E+00 NA NA 6.1E+00
Arsenic 2.5E-06 NA NA 2.5E-06 Skin, Vascular 6.4E-02 NA NA 6.4E-02
Mercury NA NA NA 0.0E+00 Developmental Neurological 5.6E-01 NA NA 5.6E-01
Chemical Total 3.8E-05 NA NA 3.8E-05 6.8E+00 NA NA 6.8E+00
Striped Bass in Gowanus Canal Total 3.8E-05 6.8E+00
Surface
Water/Sediment
Fish and Crab
Tissue
White Perch in
Gowanus Canal
Dioxin-Like PCB TEQ 4.2E-06 NA NA 4.2E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 4.0E-06 NA NA 4.0E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.2E+00 NA NA 1.2E+00
Mercury NA NA NA 0.0E+00 Developmental Neurological 1.0E-01 NA NA 1.0E-01
Chemical Total 8.2E-06 NA NA 8.2E-06 1.4E+00 NA NA 1.4E+00
White Perch in Gowanus Canal Total 8.2E-06 1.4E+00
TABLE 10.9.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
Dieldrin 6.2E-06 NA NA 6.2E-06 Liver 9.0E-02 NA NA 9.0E-02
Dioxin-Like PCB TEQ 5.0E-05 NA NA 5.0E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 5.5E-05 NA NA 5.5E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.8E+01 NA NA 1.8E+01
Arsenic 1.7E-06 NA NA 1.7E-06 Skin, Vascular 4.4E-02 NA NA 4.4E-02
Chromium (0-2)* 2.5E-05 NA NA 2.5E-05 Not identified 5.9E-02 NA NA 5.9E-02
Chromium (2-6)* 1.5E-05 NA NA 1.5E-05
Mercury NA NA NA 0.0E+00 Developmental Neurological 6.9E-01 NA NA 6.9E-01
Chemical Total 1.5E-04 NA NA 1.5E-04 1.9E+01 NA NA 1.9E+01
Eel in Gowanus Canal Total 1.5E-04 1.9E+01
TABLE 10.9.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Benzo(a)pyrene (0-2)* 1.3E-05 NA NA 1.3E-05 NA NA NA NA 0.0E+00
Benzo(a)pyrene (2-6)* 7.9E-06 NA NA 7.9E-06
Dibenz(a,h)anthracene (0-2)* 4.4E-06 NA NA 4.4E-06 NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene (2-6)* 2.6E-06 NA NA 2.6E-06
Indeno(1,2,3-cd)pyrene (0-2)* 1.1E-06 NA NA 1.1E-06 NA NA NA NA 0.0E+00
Indeno(1,2,3-cd)pyrene (2-6)* 6.6E-07 NA NA 6.6E-07
Dioxin-Like PCB TEQ 3.6E-05 NA NA 3.6E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 1.3E-05 NA NA 1.3E-05 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 4.4E+00 NA NA 4.4E+00
Arsenic 9.0E-06 NA NA 9.0E-06 Skin, Vascular 2.3E-01 NA NA 2.3E-01
Copper NA NA NA 0.0E+00 Gastrointestinal 1.4E-01 NA NA 1.4E-01
Mercury NA NA NA 0.0E+00 Developmental Neurological 6.6E-01 NA NA 6.6E-01
Chemical Total 8.8E-05 NA NA 8.8E-05 5.5E+00 NA NA 5.5E+00
Crab in Gowanus Canal Total 8.8E-05 5.5E+00
Receptor Total - Fish 2.0E-04 Receptor HI Total - Fiish 2.7E+01
Receptor Total - Blue Crab 8.8E-05 Receptor HI Total - Blue Crab 5.5E+00
TABLE 10.9.RME
RISK SUMMARY
REASONABLE MAXIMUM EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Developmental HI Across All Media = 1.4E+00 Total Developmental HI Across All Media = 6.6E-01
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used Total Finger and Toe Nails HI Across All Media = 2.5E+01 Total Finger and Toe Nails HI Across All Media = 4.4E+00
to adjust CSF for 0-2 year old for exposure duration of 2 years, ADAF of 3 Total Liver HI Across All Media = 9.0E-02 Total Gastrointestinal HI Across All Media = 1.4E-01
used to adjust CSF for 2-6 year old for exposure duration of 4 years. Total Neurological HI Across All Media = 1.4E+00 Total Neurological HI Across All Media = 6.6E-01
Non-cancer calculations shown under 0-2 year old only, Total Ocular HI Across All Media = 2.5E+01 Total Ocular HI Across All Media = 4.4E+00
as non-cancer calculations are not adjusted for MMOA. Total Skin HI Across All Media = 1.1E-01 Total Skin HI Across All Media = 2.3E-01
Total Vascular HI Across All Media = 1.1E-01 Total Vascular HI Across All Media = 2.3E-01
TABLE 10.1.CTE
RISK SUMMARY
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Sediment Surface Sediment
Exposed and near
shore sediment in
Gowanus Canal
Benzo(a)anthracene (0-2)* 3.1E-06 NA 4.6E-06 7.7E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (2-3)* 4.7E-07 NA 6.9E-07 1.2E-06
Benzo(a)pyrene (0-2)* 2.6E-05 NA 3.9E-05 6.5E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (2-3)* 4.0E-06 NA 5.8E-06 9.8E-06
Benzo(b)fluoranthene (0-2)* 2.8E-06 NA 4.1E-06 6.9E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-3)* 4.2E-07 NA 6.1E-07 1.0E-06
Dibenz(a,h)anthracene (0-2)* 1.5E-06 NA 2.2E-06 3.8E-06 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (0-2)* 2.3E-07 NA 3.3E-07 5.6E-07
Indeno(1,2,3-c,d)pyrene (0-2)* 1.2E-06 NA 1.8E-06 3.0E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-3)* 1.8E-07 NA 2.6E-07 4.5E-07
Chromium (0-2)* 1.6E-06 NA 7.1E-06 8.7E-06 Not identified 3.7E-03 NA 1.7E-02 2.0E-02
Chromium (2-3)* 2.4E-07 NA 1.1E-06 1.3E-06
Chemical Total 4.2E-05 NA 6.7E-05 1.1E-04 3.7E-03 NA 1.7E-02 2.0E-02
Exposed Surface Sediment Total 1.1E-04 2.0E-02
TABLE 10.1.CTE
RISK SUMMARY
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Dry event) Benzo(a)anthracene (0-2)* 4.3E-09 NA 1.8E-06 1.8E-06 NA NA NA 0.0E+00
Benzo(a)anthracene (2-3)* 6.4E-10 NA 2.8E-07 2.8E-07
Benzo(a)pyrene (0-2)* 1.1E-07 NA 7.8E-05 7.8E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (2-3)* 1.6E-08 NA 1.2E-05 1.2E-05
Benzo(b)fluoranthene (0-2)* 4.8E-09 NA 3.6E-06 3.6E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-3)* 7.2E-10 NA 5.4E-07 5.4E-07
Indeno(1,2,3-c,d)pyrene (0-2)* 2.1E-09 NA 1.6E-06 1.6E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-3)* 3.2E-10 NA 2.4E-07 2.4E-07
Chromium (0-2)* 2.1E-07 NA 4.4E-06 4.6E-06 Not identified 4.9E-04 NA 1.0E-02 1.1E-02
Chromium (2-3)* 3.1E-08 NA 6.6E-07 6.9E-07
Chemical Total 3.7E-07 NA 1.0E-04 1.0E-04 4.9E-04 NA 1.0E-02 1.1E-02
Surface Water Total - Dry Event 1.0E-04 1.1E-02
TABLE 10.1.CTE
RISK SUMMARY
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Recreational
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface Water Surface Water Gowanus Canal
(Wet event) Benzo(a)anthracene (0-2)* 1.7E-09 NA 7.2E-07 7.2E-07 NA NA NA 0.0E+00
Benzo(a)anthracene (2-3)* 2.5E-10 NA 3.6E-07 3.6E-07
Benzo(a)pyrene (0-2)* 3.3E-08 NA 2.4E-05 2.4E-05 NA NA NA 0.0E+00
Benzo(a)pyrene (2-3)* 4.9E-09 NA 3.4E-06 3.4E-06
Benzo(b)fluoranthene (0-2)* 3.0E-09 NA 2.3E-06 2.3E-06 NA NA NA 0.0E+00
Benzo(b)fluoranthene (2-3)* 4.6E-10 NA 2.8E-07 2.8E-07
Dibenz(a,h)anthracene (0-2)* 1.6E-08 NA 1.8E-05 1.8E-05 NA NA NA 0.0E+00
Dibenz(a,h)anthracene (0-2)* 2.4E-09 NA 9.0E-06 9.0E-06
Indeno(1,2,3-c,d)pyrene (0-2)* 8.0E-09 NA 6.0E-06 6.0E-06 NA NA NA 0.0E+00
Indeno(1,2,3-c,d)pyrene (2-3)* 1.2E-09 NA 2.0E-08 2.1E-08
Chromium (0-2)* 9.4E-08 NA 2.0E-06 2.1E-06 Not identified 2.2E-04 NA 4.6E-03 4.9E-03
Chromium (2-3)* 1.4E-08 NA 2.7E-08 4.1E-08
Chemical Total 1.8E-07 NA 6.7E-05 6.7E-05 2.2E-04 NA 4.6E-03 4.9E-03
Surface Water Total - Wet Event 6.7E-05 4.9E-03
Receptor Total 2.1E-04 Receptor HI Total 3.1E-02
HI - Hazard Index
Receptor Total and target organ totals includes sum of exposed and near shore sediment, and maximum of dry event and wet event surface water.
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used to adjust CSF for 0-2 year old for exposure duration of 2 years, ADAF of 3
used to adjust CSF for 2-3 year old for exposure duration of 1 year, for a total CTE exposure duration of 3 years. Non-cancer calculations shown under 0-2 year old only,
as non-cancer calculations are not adjusted for MMOA.
TABLE 10.2.CTE
RISK SUMMARY
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 4.1E-01 NA NA 4.1E-01
Chemical Total 0.0E+00 NA NA 0.0E+00 4.1E-01 NA NA 4.1E-01
Striped Bass in Gowanus Canal Total 0.0E+00 4.1E-01
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
Dioxin-Like PCB TEQ 1.6E-06 NA NA 1.6E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.1E+00 NA NA 1.1E+00
Chemical Total 1.6E-06 NA NA 1.6E-06 1.1E+00 NA NA 1.1E+00
Eel in Gowanus Canal Total 1.6E-06 1.1E+00
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Dioxin-Like PCB TEQ 7.7E-06 NA NA 7.7E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 1.4E-06 NA NA 1.4E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.9E+00 NA NA 1.9E+00
Arsenic 1.9E-06 NA NA 1.9E-06 Skin, Vascular 1.0E-01 NA NA 1.0E-01
Mercury NA NA NA 0.0E+00 Developmental Neurological 2.8E-01 NA NA 2.8E-01
Chemical Total 1.1E-05 NA NA 1.1E-05 2.3E+00 NA NA 2.3E+00
Crab in Gowanus Canal Total 1.1E-05 2.3E+00
Receptor Total - Fish 1.6E-06 Receptor HI Total - Fiish 1.5E+00
Receptor Total - Blue Crab 1.1E-05 Receptor HI Total - Blue Crab 2.3E+00
TABLE 10.2.CTE
RISK SUMMARY
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Adult
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Finger and Toe Nails HI Across All Media = 1.5E+00 Total Developmental HI Across All Media = 2.8E-01
Total Ocular HI Across All Media = 1.5E+00 Total Finger and Toe Nails HI Across All Media = 1.9E+00
Total Neurological HI Across All Media = 2.8E-01
Total Ocular HI Across All Media = 1.9E+00
Total Skin HI Across All Media = 1.0E-01
Total Vascular HI Across All Media = 1.0E-01
TABLE 10.3.CTE
RISK SUMMARY
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Striped Bass in
Gowanus Canal
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 6.4E-01 NA NA 6.4E-01
Chemical Total 0.0E+00 NA NA 0.0E+00 6.4E-01 NA NA 6.4E-01
Striped Bass in Gowanus Canal Total 0.0E+00 6.4E-01
Surface
Water/Sediment
Fish and Crab
TissueEel in Gowanus Canal
Dioxin-Like PCB TEQ 2.5E-06 NA NA 2.5E-06 NA NA NA NA 0.0E+00
Nondioxin-Like 1.4E-06 NA NA 1.4E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 1.8E+00 NA NA 1.8E+00
Chromium (0-2)* 2.5E-06 NA NA 2.5E-06 Not identified 5.8E-03 NA NA 5.8E-03
Chromium (2-3)* 3.8E-07 NA NA 3.8E-07
Chemical Total 6.7E-06 NA NA 6.7E-06 1.8E+00 NA NA 1.8E+00
Eel in Gowanus Canal Total 6.7E-06 1.8E+00
TABLE 10.3.CTE
RISK SUMMARY
CENTRAL TENDENCY EXPOSURE
Gowanus Canal Remedial Investigation, Brooklyn, New York
Scenario Timeframe: Current/Future
Receptor Population: Angler
Receptor Age: Child
Medium Exposure Exposure Chemical Carcinogenic Risk Non-Carcinogenic Hazard Quotient
Medium Point of Potential
Concern Ingestion Inhalation Dermal Exposure Primary Ingestion Inhalation Dermal Exposure
Routes Total Target Organ(s) Routes Total
Surface
Water/Sediment
Fish and Crab
Tissue
Blue Crab in Gowanus
Canal
Benzo(a)pyrene (0-2)* 8.7E-06 NA NA 8.7E-06 NA NA NA NA 0.0E+00
Benzo(a)pyrene (2-3)* 1.3E-06 NA NA 1.3E-06
Dibenz(a,h)anthracene (0-2)* 2.9E-06 NA NA 2.9E-06 NA NA NA NA 0.0E+00
Dibenz(a,h)anthracene (2-3)* 4.4E-07 NA NA 4.4E-07
Dioxin-Like PCB TEQ 1.2E-05 NA NA 1.2E-05 NA NA NA NA 0.0E+00
Nondioxin-Like 2.2E-06 NA NA 2.2E-06 NA NA NA NA 0.0E+00
Total PCB NA NA NA 0.0E+00 Ocular, Finger and Toe Nails 2.9E+00 NA NA 2.9E+00
Arsenic 3.0E-06 NA NA 3.0E-06 Skin, Vascular 1.5E-01 NA NA 1.5E-01
Mercury NA NA NA 0.0E+00 Developmental Neurological 4.4E-01 NA NA 4.4E-01
Chemical Total 3.0E-05 NA NA 3.0E-05 3.5E+00 NA NA 3.5E+00
Crab in Gowanus Canal Total 3.0E-05 3.5E+00
Receptor Total - Fish 6.7E-06 Receptor HI Total - Fiish 2.4E+00
Receptor Total - Blue Crab 3.0E-05 Receptor HI Total - Blue Crab 3.5E+00
Target organ totals for Fish Target organ totals for Blue Crab
HI - Hazard Index Total Finger and Toe Nails HI Across All Media = 2.4E+00 Total Developmental HI Across All Media = 4.4E-01
* Constituent acts via a mutagenic mode of action (MMOA). ADAF of 10 used Total Ocular HI Across All Media = 2.4E+00 Total Finger and Toe Nails HI Across All Media = 2.9E+00
to adjust CSF for 0-2 year old for exposure duration of 2 years, ADAF of 3 Total Neurological HI Across All Media = 4.4E-01
used to adjust CSF for 2-3 year old for exposure duration of 1 year, for a total Total Ocular HI Across All Media = 2.9E+00
CTE exposure duration of 3 years. Non-cancer calculations shown under Total Skin HI Across All Media = 1.5E-01
0-2 year old only, as non-cancer calculations are not adjusted for MMOA. Total Vascular HI Across All Media = 1.5E-01
Calculations of Preliminary Remediation Goals (PRGs)
Table 11.1
Calculations of Blood Lead Concentrations (PbBs), Recreational Adult, Exposed Sediment
U.S. EPA Technical Review Workgroup for Lead, Adult Lead Committee
Version date 6/21/09 EDIT RED CELLS
Variable Units
GSDi and PbBo from
Analysis of NHANES
1999-2004
GSDi and PbBo from
Analysis of NHANES
III (Phases 1&2)
PbS ug/g or ppm 660 660
Rfetal/maternal -- 0.9 0.9
BKSF ug/dL per
ug/day
0.4 0.4
GSDi -- 1.8 2.1
PbB0 ug/dL 1.0 1.5
IRS g/day 0.050 0.050
IRS+D g/day -- --
WS -- -- --
KSD -- -- --
AFS, D -- 0.12 0.12
EFS, D days/yr 26 26
ATS, D days/yr 365 365
PbBadult PbB of adult worker, geometric meanug/dL 1.1 1.6
PbBfetal, 0.95 95th percentile PbB among fetuses of adult workers ug/dL 2.6 4.9
PbBt Target PbB level of concern (e.g., 10 ug/dL) ug/dL 10.0 10.0
P(PbBfetal > PbBt) Probability that fetal PbB > PbBt, assuming lognormal distribution% 0.005% 0.5%
Baseline PbB
Description of Variable
Soil lead concentration
Fetal/maternal PbB ratio
Biokinetic Slope Factor
Geometric standard deviation PbB
Averaging time (same for soil and dust)
Soil ingestion rate (including soil-derived indoor dust)
Total ingestion rate of outdoor soil and indoor dust
Weighting factor; fraction of IRS+D ingested as outdoor soil
Mass fraction of soil in dust
Absorption fraction (same for soil and dust)
Exposure frequency (same for soil and dust)
Source: U.S. EPA (1996). Recommendations of the Technical Review Workgroup for Lead
for an Interim Approach to Assessing Risks Associated with Adult Exposures to Lead in Soil Printed 1/14/2011 12:50 AM
Table 11.2
Recreational Child, Exposed Sediment and Surface Water
LEAD MODEL FOR WINDOWS Version 1.1
==================================================================================
Model Version: 1.1 Build11
User Name: R. Warren
Date: 1/13/2011
Site Name: Gowanus Canal
Operable Unit:
Run Mode: Research
==================================================================================
****** Air ******
Indoor Air Pb Concentration: 30.000 percent of outdoor.
Other Air Parameters:
Age Time Ventilation Lung Outdoor Air
Outdoors Rate Absorption Pb Conc
(hours) (m³/day) (%) (µg Pb/m³)
----------------------------------------------------------------------
.5-1 1.000 2.000 32.000 0.100
1-2 2.000 3.000 32.000 0.100
2-3 3.000 5.000 32.000 0.100
3-4 4.000 5.000 32.000 0.100
4-5 4.000 5.000 32.000 0.100
5-6 4.000 7.000 32.000 0.100
6-7 4.000 7.000 32.000 0.100
****** Diet ******
Age Diet Intake(µg/day)
-----------------------------------
.5-1 2.260
1-2 1.960
2-3 2.130
3-4 2.040
4-5 1.950
5-6 2.050
6-7 2.220
****** Drinking Water ******
Water Consumption:
Table 11.2
Recreational Child, Exposed Sediment and Surface Water
LEAD MODEL FOR WINDOWS Version 1.1
Age Water (L/day)
-----------------------------------
.5-1 0.200
1-2 0.500
2-3 0.520
3-4 0.530
4-5 0.550
5-6 0.580
6-7 0.590
Drinking Water Concentration: 13.000 µg Pb/L
****** Soil & Dust ******
Multiple Source Analysis Used
Average multiple source concentration: 472.000 µg/g
Mass fraction of outdoor soil to indoor dust conversion factor: 0.700
Outdoor airborne lead to indoor household dust lead concentration: 100.000
Use alternate indoor dust Pb sources? No
Age Soil (µg Pb/g) House Dust (µg Pb/g)
--------------------------------------------------------
.5-1 660.000 472.000
1-2 660.000 472.000
2-3 660.000 472.000
3-4 660.000 472.000
4-5 660.000 472.000
5-6 660.000 472.000
6-7 660.000 472.000
****** Alternate Intake ******
Age Alternate (µg Pb/day)
-----------------------------------
.5-1 0.000
1-2 0.000
2-3 0.000
3-4 0.000
4-5 0.000
5-6 0.000
Table 11.2
Recreational Child, Exposed Sediment and Surface Water
LEAD MODEL FOR WINDOWS Version 1.1
6-7 0.000
****** Maternal Contribution: Infant Model ******
Maternal Blood Concentration: 1.000 µg Pb/dL
*****************************************
CALCULATED BLOOD LEAD AND LEAD UPTAKES:
*****************************************
Year Air Diet Alternate Water
(µg/day) (µg/day) (µg/day) (µg/day)
-------------------------------------------------------------------------------
.5-1 0.021 0.959 0.000 1.104
1-2 0.034 0.804 0.000 2.667
2-3 0.062 0.896 0.000 2.843
3-4 0.067 0.877 0.000 2.963
4-5 0.067 0.877 0.000 3.215
5-6 0.093 0.938 0.000 3.449
6-7 0.093 1.025 0.000 3.542
Year Soil+Dust Total Blood
(µg/day) (µg/day) (µg/dL)
---------------------------------------------------------------
.5-1 12.048 14.132 7.5
1-2 18.501 22.007 8.9
2-3 18.964 22.765 8.4
3-4 19.391 23.299 8.1
4-5 15.018 19.177 6.8
5-6 13.748 18.228 5.8
6-7 13.109 17.770 5.1
Calculations of Preliminary Remediation Goals (PRGs)
Table 11.2
Calculations of Blood Lead Concentrations (PbBs), Industrial Worker and Adult Resident, Overflow Sediment
U.S. EPA Technical Review Workgroup for Lead, Adult Lead Committee
Version date 6/21/09 EDIT RED CELLS
Variable Units
GSDi and PbBo from
Analysis of NHANES
1999-2004
GSDi and PbBo from
Analysis of NHANES
III (Phases 1&2)
PbS ug/g or ppm 533 533
Rfetal/maternal -- 0.9 0.9
BKSF ug/dL per
ug/day
0.4 0.4
GSDi -- 1.8 2.1
PbB0 ug/dL 1.0 1.5
IRS g/day 0.100 0.100
IRS+D g/day -- --
WS -- -- --
KSD -- -- --
AFS, D -- 0.12 0.12
EFS, D days/yr 9 9
ATS, D days/yr 365 365
PbBadult PbB of adult worker, geometric meanug/dL 1.1 1.6
PbBfetal, 0.95 95th percentile PbB among fetuses of adult workers ug/dL 2.5 4.8
PbBt Target PbB level of concern (e.g., 10 ug/dL) ug/dL 10.0 10.0
P(PbBfetal > PbBt) Probability that fetal PbB > PbBt, assuming lognormal distribution% 0.003% 0.4%
Baseline PbB
Biokinetic Slope Factor
Description of Variable
Geometric standard deviation PbB
Soil lead concentration
Fetal/maternal PbB ratio
Soil ingestion rate (including soil-derived indoor dust)
Total ingestion rate of outdoor soil and indoor dust
Averaging time (same for soil and dust)
Exposure frequency (same for soil and dust)
Absorption fraction (same for soil and dust)
Mass fraction of soil in dust
Weighting factor; fraction of IRS+D ingested as outdoor soil
Source: U.S. EPA (1996). Recommendations of the Technical Review Workgroup for Lead
for an Interim Approach to Assessing Risks Associated with Adult Exposures to Lead in Soil Printed 1/14/2011 12:50 AM
Table 11.4
Residential Child, Overflow Sediment and Surface Water
LEAD MODEL FOR WINDOWS Version 1.1
==================================================================================
Model Version: 1.1 Build11
User Name:
Date:
Site Name:
Operable Unit:
Run Mode: Research
==================================================================================
****** Air ******
Indoor Air Pb Concentration: 30.000 percent of outdoor.
Other Air Parameters:
Age Time Ventilation Lung Outdoor Air
Outdoors Rate Absorption Pb Conc
(hours) (m³/day) (%) (µg Pb/m³)
----------------------------------------------------------------------
.5-1 1.000 2.000 32.000 0.100
1-2 2.000 3.000 32.000 0.100
2-3 3.000 5.000 32.000 0.100
3-4 4.000 5.000 32.000 0.100
4-5 4.000 5.000 32.000 0.100
5-6 4.000 7.000 32.000 0.100
6-7 4.000 7.000 32.000 0.100
****** Diet ******
Age Diet Intake(µg/day)
-----------------------------------
.5-1 2.260
1-2 1.960
2-3 2.130
3-4 2.040
4-5 1.950
5-6 2.050
6-7 2.220
****** Drinking Water ******
Water Consumption:
Age Water (L/day)
-----------------------------------
.5-1 0.200
1-2 0.500
2-3 0.520
3-4 0.530
4-5 0.550
5-6 0.580
6-7 0.590
Drinking Water Concentration: 13.000 µg Pb/L
****** Soil & Dust ******
Multiple Source Analysis Used
Average multiple source concentration: 383.100 µg/g
Mass fraction of outdoor soil to indoor dust conversion factor: 0.700
Outdoor airborne lead to indoor household dust lead concentration: 100.000
Use alternate indoor dust Pb sources? No
Age Soil (µg Pb/g) House Dust (µg Pb/g)
--------------------------------------------------------
.5-1 533.000 383.100
1-2 533.000 383.100
2-3 533.000 383.100
3-4 533.000 383.100
4-5 533.000 383.100
5-6 533.000 383.100
6-7 533.000 383.100
****** Alternate Intake ******
Age Alternate (µg Pb/day)
-----------------------------------
.5-1 0.000
1-2 0.000
2-3 0.000
3-4 0.000
4-5 0.000
5-6 0.000
6-7 0.000
****** Maternal Contribution: Infant Model ******
Maternal Blood Concentration: 1.000 µg Pb/dL
*****************************************
CALCULATED BLOOD LEAD AND LEAD UPTAKES:
*****************************************
Year Air Diet Alternate Water
(µg/day) (µg/day) (µg/day) (µg/day)
-------------------------------------------------------------------------------
.5-1 0.021 0.982 0.000 1.130
1-2 0.034 0.827 0.000 2.743
2-3 0.062 0.918 0.000 2.914
3-4 0.067 0.897 0.000 3.028
4-5 0.067 0.890 0.000 3.263
5-6 0.093 0.949 0.000 3.491
6-7 0.093 1.036 0.000 3.580
Year Soil+Dust Total Blood
(µg/day) (µg/day) (µg/dL)
---------------------------------------------------------------
.5-1 9.989 12.123 6.5
1-2 15.398 19.002 7.7
2-3 15.732 19.626 7.3
3-4 16.041 20.033 6.9
4-5 12.338 16.558 5.8
5-6 11.265 15.798 5.0
6-7 10.725 15.435 4.4
==================================================================================
==================================================================================
0
25
50
75
100
Prob. Distribution (%)
0 4 8 12 16 20 24 28 32 36 40 44 48
Blood Pb Conc (µg/dL)
Age Range = 0 to 84 months
Run Mode = Research
Cutoff = 10.000 µg/dl
Geo Mean = 7.091
GSD = 1.600
% Above = 23.227
0
25
50
75
100
Prob. Distribution (%)
0 4 8 12 16 20 24 28 32 36 40 44 48
Blood Pb Conc (µg/dL)
Age Range = 0 to 84 months
Run Mode = Research
Cutoff = 10.000 µg/dl
Geo Mean = 6.137
GSD = 1.600
% Above = 14.947