Clean Water Through Protection and Partnership NYC ...

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Clean Water Through Protection and Partnership

NYC Watershed Science and Technical Conference September 12, 2019Diamond Mills Hotel, Saugerties, NY

2 2019 NYC Watershed Science and Technical Conference

Lisa Melville

Many Thanks to the Conference Sponsors• Catskill Watershed Corporation

• New York City Department of Environmental Protection

• New York State Department of Environmental Conservation

• New York State Department of Health

• New York State Department of State

• New York Water Environment Association, Inc. •Lower Hudson Chapter

• United States Geological Survey

• Watershed Protection and Partnership Council

Welcome to the 2019 NYC Watershed Science and Technical Conference

OrganizersThe New York Water Environment Asso ciation, Inc. (NYWEA) – Founded in 1929, by professionals in the field of water quality as a non-profit, educational organiza tion. Association members helped lead the way toward existing state and national clean water programs. Today the Association has over 2,500 members representing diverse backgrounds and specialties, but all are concerned and in-volved with protecting and enhancing our precious water resources. www.nywea.org

The Watershed Protection and Partnership Council – Created by the historic New York City Watershed Memorandum of Agreement to provide a regional forum to aid in the long term protection of New York City’s drinking water, and the economic vitality of the Upstate Watershed com-munities.http://www.dos.ny.gov/watershed/

The New York City DEP – DEP is a New York City agency of nearly 6,000 employees that manages and conserves

the City’s water supply; distributes more than one billion gallons of clean drinking water each day to nine million New Yorkers and collects wastewater through a vast under-ground network of pipes, regulators, and pumping stations; and treats the 1.3 billion gallons of wastewater that New Yorkers pro-duce each day in a way that protects the qual-ity of New York Harbor.www.nyc.gov/html/dep

New York State Department of State – The Office of the Sec-retary of State was established

in 1778, making it, other than the Offices of Governor and Lieutenant Governor, the old-est agency in the administration of New York State government. www.dos.ny.gov

The Watershed Science and Technical Conference was created as an annual opportunity to bring sci-entists, professionals, and other experts together

with watershed stakeholders and the public, to technically inform, exchange ideas, and unveil new information regard-ing the protection of the nation’s largest unfiltered surface water supply.

In 1997, the signatories to the historic New York City Watershed Agreement formed an enduring partnership to protect and enhance the City’s Watershed and the scores of communities living within it. Twenty-two years later, there has been unparalleled efforts and resources devoted to sound science and innovation in both human health and en-vironmental disciplines within the New York City Water shed. This year’s theme, “Clean Water Through

Protection and Partnership,” highlights the types of sci-entific research that was intended in the NYC Watershed Agreement.

The 2019 NYC Watershed Science and Technical Con-ference continues its long history of bringing this science to you. As conference attendees you will find yourselves in a unique forum for collaboration and technology transfer and to increase coordination among the array of entities and professionals working within watershed protection science.

Thank you for joining us! Be sure to join us after the con-ference for a drink and a snack during the Young Profes-sional Networking gathering at the Partition Bar. See page 12 for more details.

September 12, 2019 3

“Clean Water Through Protection and Partnership” 2019 NYC Watershed Science and Technical Conference Thursday, September 12, 2019

8:00 am Registration (Location: Ballroom) 8:30 am Welcome, Robert Wither, NYWEA President 8:40 am Paul Rush, Deputy Commissioner, Bureau of Water Supply, NYC Department of Environmental Protection 8:45 am Welcome, Lisa Melville, NYS Department of State 8:50 am Lessons from Hurricane Irene and Superstorm Sandy and Recovery Dave Warne, Assistant Commissioner, Bureau of Water Supply, NYC Department of Environmental Protection David Corrigan, Acting Resident Engineer, NYS Department of Transportation Lori DuBord, Senior Program Manager, Governor’s Office of Storm Recovery Aaron Bennett, Environmental Planner, Ulster County, Department of the Environment

10:00 am-10:30 am Break

MORNING SESSION I Moderators Scott Davis, HDR; Robert DeGiorgio, STV Group Contact Hours 2.0 Engineer

10:30 am Extreme Flood Risk from Rain Events and Rain on Snowpack Mark Bartlett, Emery Myers, Glenn Muckley, Stantec Consulting Services Inc.

Rainfall on snowpack and the resulting meltwater are a primary pattern associated with extreme flood events. Here, for a watershed area, we introduce a method for calculating extreme moisture inputs from both rainfall and snowpack meltwater for typical NOAA storm recurrence intervals (100 year, 500 year, etc.). By accounting for both rainfall and snowmelt dynamics, watershed managers may improve estimates of the extreme flooding risk used to plan operations and infrastructure improvements.

11:00 am The Tale of Two Storm Strategies on the Same Project Troy Wojciekofsky, Garrett Frueh, Stantec Consulting Services Inc.

Extreme spatial variation in site conditions warrants a combination of approaches for managing stormwater. However, few examples and little guidance exists on leveraging various stormwater management strategies for different conditions across the same site. Here we outline two stormwater management strategies for a mixed-use project on 45 acres in Malta, Saratoga County, New York. We anticipate that this approach may guide future stormwater projects that must adapt to different conditions within the same project site.

11:30 am Batavia Kill Watershed District Dams – Response during Tropical Storm Irene and PostStorm Repairs to Three High Hazard Dams in the Town of Windham Kathryn Serra, C.T. Male Associates

In August of 2011, Tropical Storm Irene devastated Greene County, New York and surrounding areas. At the height of the storm, Emergency Action Plans (EAPs) in the event of dam failure were activated at their highest threat level – imminent failure – for the three high hazard dams owned by the Batavia Kill Watershed District in the Town of Windham. These dams provide flood control on the Batavia Kill, a major tributary of the Schoharie Reservoir. C.T. Male prepared the EAPs in 2008 and staff was called to assess catastrophic damage of the largest dam in the watershed, Maplecrest Dam, during the storm. This presentation will dis-cuss storm damage to the dams and the Batavia Kill as well as impacts to the New York City watershed. The presentation will also outline lessons learned from responding to calls from local emergency responders, assessment of severe damage of the dams as a result of the storm, and repairs to the auxiliary spillways at all three high hazard dams.


12:00 pm K9 Detective Pilot at Kensico Allison Dewan, Lori Emery, New York City Department of Environmental Protection

BWS Research Application, Water Quality and Watershed Protection Programs worked with Environmental Canine Services to carry out a three-day pilot study in June of 2019, in the Kensico Reservoir watershed to identify potential leaky or broken sewer lines. Samples were also collected for traditional microbial source tracking analyses for comparison to the canine response.

12:30 pm-1:30 pm Lunch and Operations Challenge Demonstration Be sure to watch the Watershed Warriors demonstrate their skills!

MORNING SESSION II Moderators Tim Clayton, Surpass Chemical; Kara Pho, Jacobs Contact Hours 2.0 Engineer 2.0 Water

10:30 am Water Quality Responses to Future Climate in a Water Supply Watershed Rajith Mukundan, Rakesh Gelda, Emmet Owens, New York City Department of Environmental Protection; Linh Hoang, National Institute of Water and Atmospheric Research, New Zealand

Future climate scenarios from a suite of 20 GCMs were used to simulate the impact of climate change on nutrient loading in the Cannonsville watershed. Preliminary results from SWAT-HS simulations indicate that loading of dissolved forms of nutrients (N and P) will decrease or will have no change under future climate whereas particulate forms of nutrients and sediment loading will increase due to an increase in the frequency of large storm events.

11:00 am How You Present Your Water Quality Data Can Be as Important as the Water Quality Data Itself David Van Valkenburg, New York City Department of Environmental Protection

To provide high quality drinking water, the New York City Department of Environmental Protection moni-tors water quality analytes at more than 475 locations in the watershed. Converting this massive amount of raw data to actionable information requires an understanding of the source data via statistics and graphical interpretation that can guide operational decisions and sample collection. Examining water quality via dif-ferent graphical techniques can clarify our understanding of water quality in the water supply.

11:30 am Predicting Source Water Quality in New York City Reservoirs Using Satellite Observations of Watershed Characteristics Josh Weiss, Kinsey Hoffman, Hazen and Sawyer; Amita Mehta, University of Maryland Baltimore County; Christine Lee, National Aeronautics and Space Administration (NASA)

This presentation will describe the results of statistical modeling that uses NASA satellite remote sensing observations of watershed conditions to predict source water quality conditions up to one year in advance. Results for NYC DEP reservoirs and NYS DEC-monitored lakes will be shown for various water quality parameters, including nitrogen, phosphorus, organic carbon, chlorophyll-a, and turbidity.

12:00 pm Addressing Taste and Odor Complaints Eldi Lico, Michelle Rissolo, New York City Department of Environmental Protection

The increase in musty taste and odor complaints from Manhattan and the Bronx areas served by the Croton Filtration Plant, occurred October 5 through October 15, 2018. The event was caused by seasonal water quality characteristics within our source water reservoir.

12:30 pm-1:30 pm Lunch and Operations Challenge Demonstration


MORNING SESSION III Moderators Dale Post, JCO Environmental Services; William J. Nylic, III, CDM Smith Contact Hours 2.0 Engineer

10:30 am Wetland Delineation: NYSDEC vs. USACE Regulatory Program Kevin Bliss, TRC

This presentation explores the regulatory definition of freshwater wetlands as applied by both the New York State Department of Environmental Conservation and the U.S. Army Corps of Engineers. Accepted char-acteristics of wetland hydrology, hydric soils, and hydrophytic vegetation will be provided, along with an explanation of how these features are determined in the field. The distinctions between these two regulatory agencies’ approaches – and the ramifications of those differences – will be discussed.

11:00 am Retrofitting Longterm Reference Wetland Monitoring with Current Condition Assessment Methodologies in the New York City Watershed Laurie Machung, New York City Department of Environmental Protection

The New York City Department of Environmental Protection (DEP) has been monitoring reference wet-lands throughout the New York City watershed for over 15 years. The New York State Natural Heritage Program (NYNHP) has more recently developed tools for a statewide wetland condition assessment. This presen tation will explore the feasibility of retrofitting DEP’s previously collected data to current NYNHP methodology and adapting its monitoring protocols to achieve standardization and comparability with state-wide wetland assessment methodology.

11:30 am Shoreline Stabilization for MS4 Chesapeake Bay TMDL Compliance Glenn Muckley, Stantec Consulting Services Inc.

The potential environmental and landowner benefits from living shorelines can be immense, and evolutions in MS4/TMDL compliance approaches within the Chesapeake Bay provide a window into the potential proj-ect screening, prioritization and design opportunities in other locales. We will review a GIS-based approach for screening shoreline stabilization BMP opportunities on a large scale and the optimization approach used to target areas of greatest potential for sediment and nutrient reduction.

12:00 pm Developing a Regional Curve for Estimating Bank Erosion Rates in the Ashokan Watershed, New York Matthew Lajoie, Stantec Consulting Services Inc.

Stantec Consulting Services Inc. is currently developing a predictive erosion rate model to estimate stream bank contributions of sediment within the Ashokan Watershed in New York. Curve development, consider-ations, applications and lessons learned will be discussed in this presentation.

12:30 pm-1:30 pm Lunch and Operations Challenge Demonstration

AFTERNOON SESSION IV Moderators Christine Abplanalp, Arcadis; Rich Fiedler, GP Jager, Inc.

Contact Hours 2.5 Engineer 2.5 Water 1:30 pm A Sudden and Sustained Increase in Giardia Cysts at New York City’s Rondout Reservoir – A Case Study Kerri Alderisio, Christian Pace, Kurt Gabel, Christopher Nadareski, New York City Department of Environmental Protection

In November of 2018, an increase in the number of Giardia cysts was observed at the Delaware inflow to Kensico Reservoir. Concentrations of cysts were found to be several times higher than normal for this time of year upstream at Rondout Reservoir, with a maximum of 29 cysts 50L-1. This presentation will review the various efforts undertaken during this investigation and discuss sample results obtained to date.


2:00 pm Correlation of Stream and Reservoir Giardia Concentrations with Precipitation Based on Corresponding Monthly, Seasonal or Annual Time Scales Christian Pace, Kerri Alderisio, New York City Department of Environmental Protection

Microbial contaminants are frequently a concern for public water supplies, especially after large or prolonged precipitation events. The relationship between precipitation and protozoan concentrations over varying time intervals was investigated at several stream and reservoir outflow sites. Various regression models were used to determine if long term, fixed frequency data could be used to better understand the connection between these parameters.

2:30 pm-3:00 pm Break

3:00 pm Legionella spp. Monitoring in New York City’s Water Distribution System Adam Szczerba, Aspa Capetanakis, Salome Freud, New York City Department of Environmental Protection; Enoma Omoregie, New York City Department of Health and Mental Hygiene

New York City Departments of Environmental Protection (DEP) and Health and Mental Hygiene (DOHMH) Public Health Laboratory (PHL) are conducting a joint study to investigate the prevalence and distribution of Legionella spp. in New York City’s drinking water supply. Since November 2017, samples collected from source water, distribution system and biofilms are analyzed for physical, chemical and microbiological parameters This presentation will summarize the detection and prevalence of Legionella spp. in the New York City distribution system.

3:30 pm Holistic Reservoir Management: Ecological Engineering to Suppress Harmful Algae Blooms and Improve Raw Water Quality David Austin, Jacobs

This presentation will discuss alternative approaches to managing cyanobacteria blooms in drinking water reservoirs. The root causes of blooms will be discussed along with state-of-the-art methods to reduce dis-solved nutrients and prevent blooms from occurring.

4:00 pm Microbiologicallyinduced Corrosion in Water Systems Glenn Edgemon, Scott Davis, HDR, Inc.

The term microbiologically-induced corrosion (MIC) designates corrosion due to the presence and activities of microorganisms including microalgae, bacteria and fungi. Essentially all process water applications can be susceptible to MIC and the associated localized corrosion rates can be exceptionally high. This presen-tation describes common MIC mechanisms, commercially available test procedures, monitoring tools and disinfection/treatment options.

AFTERNOON SESSION V Moderators Jamie Zimmermann, HDR; Garrett Frueh, Stantec

Contact Hours 2.5 Engineer 0.5 Wastewater‡ 2.5 Water 1:30 pm Chloride Trends in West of Hudson Streams Jim Mayfield, Richard Van Dreason, New York City Department of Environmental Protection

Increasing trends in chloride concentrations have been observed in northeastern United States water bodies, including New York. Elevated chloride may impact aquatic ecosystems and increase the corrosion rates of vehicles and infrastructure. In this presentation trends in chloride concentrations and related analytes in the New York City water supply West of Hudson streams will be examined. Potential causes for observed increase will be discussed. Comparisons of results among watersheds of varying land use will also be made.


2:00 pm Monitoring Disinfection ByProduct Surrogates in the New York City Water Supply Rich Van Dreason, New York City Department of Environmental Protection

Starting in July 2018, coinciding with frequent rain events, notable increases in distribution system disinfec-tion by-products (DBPs) and source water DBP surrogates were apparent in the New York City water supply. In this presentation, we will discuss the factors involved in the increase as well as operational changes taken to manage dissolved organic carbon (DOC) concentrations before the water enters the distribution system. Regional, seasonal and temporal patterns of DOC and UV254 in the Upstate water supply will also be presented.


3:00 pm From Watershed to Reservoir Effluent: Data Exploration to Gain Insights on Disinfection ByProduct Precursors Karen Moore, Chrisitian Tiani, New York City Department of Environmental Protection; Alfred Theodore NK Kpodonu, New York City Department of Environmental Protection and City University of New York

A study on New York City drinking water sources is underway to understand the factors influencing disin-fection by-product (DBP) precursors. We use a variety of statistical methods to explore field and laboratory data from the Cannonsville and Neversink Reservoirs and their watersheds. The ultimate goal is to develop surrogates for DBP formation potential for use in a model to assist in making operational decisions to min-imize the presence of DBPs in the New York City water supply.

3:30 pm Optimizing Coagulant Dosing Using Machine Learning Methods Nicholas Prokopowicz, Blair Goodridge, New York City Department of Environmental Protection

Jar testing has been the water treatment industry standard for determining coagulant dose for natural organic matter (NOM) removal, where plant treatment processes are replicated in a laboratory-scale system. This approach is susceptible to experimental artifacts (i.e., pH and temperature changes), labor-intensive, and thus unable to guide dosing on sub-daily timescales. A machine learning approach may offer solutions to such issues, enhancing NOM removal, reducing DBP production and lowering operational costs.

4:00 pm NEW Water’s Adaptive Management Pilot and Program Strategy‡ Megan Bender, Jacobs

The Green Bay Metropolitan Sewerage District (GBMSD), Green Bay, Wisconsin, is working within Wis-consin State regulations to meet nutrient limits stipulated in their discharge permit through an innovative watershed-based approach called adaptive management. Working with stakeholders, GBMSD’s pilot pro-gram focused on baseline watershed characterization, enhanced nutrient management approaches, decision framework used to evaluate non-point source controls versus removal through GBMSD’s treatment plants, tools developed to plan the work and verify progress, and water quality improvements to date.


AFTERNOON SESSION VI

Moderators Erin Moore, Tighe & Bond; Jolanda Jansen, C.T. Male Associates

Contact Hours 2.5 Engineer 2.5 Water 1:30 pm Assessment of Climate Change Impacts on New York City Water Supply System Using Operations Support Tool: CCIMP Phase II Rakesh Gelda, Adao H. Matonse, Jerry Mead, Emmet M. Owens, New York City Department of Environmental Protection

We present results of the second phase of the Climate Change Integrated Modeling Project of New York City Department of Environmental Protection. We use state-of-the-art modeling software system, DEP’s Operations Support Tool, to evaluate climate change impacts on the water supply system. Under the pro-jected future climate and current operating rules and assumptions, model simulations demonstrate high resiliency, high reliability, and low vulnerability of the water supply system while the drought conditions remain unchanged.

2:00 pm Hydrological and Temperature Variations between 1900 and 2016 in the Catskill Mountains Petra Kelly-Voicu, CUNY Hunter College; Allan Frei, Hunter College, Department of Geography, Institute for Sustainable Cities

We examine variations in precipitation, streamflow and temperature between 1900 and 2016. The most significant hydroclimatic events on record include the cold drought of the 1960s and the wet period between the late 1990s and 2012. We also find increasing temperatures and decreasing diurnal temperature range since the mid-20th century. Cyclic behavior is found more in hydrologic than in temperature variables, and more during the cold season where periodicity peaking at 28 years is identified.


3:00 pm Results from a Comparison/Contrast Study between Foamstream and Conventional Herbicides. A Study on Efficacy. David Quentin, Patrick Lambert, New York City Department of Environmental Protection

New York City Department of Environmental Protection investigated alternatives to commonly used her-bicides for managing weeds on City property, Foamstream is one alternative. A study conducted during the summer of 2018 showed that Foamstream eradicated leafy tissue on contact, but regrowth was seen at all sites within a month after application. Finale and Glyphosate were slower to act, but longer lasting in their effectiveness. Overall, it was found Finale was the best choice as far as species control and length of control.

3:30 pm LTRLTC: What We Know and How We Are Preparing for It Michael Liu, Carla Glaser, Salome Freud, Steven Schindler, New York City Department of Environmental Protection

New York City Environmental Protection has recently undertaken a number studies to further investigate optimization of corrosion control, better understand lead exposure, and prepare for the Long Term Revisions to the Lead and Copper Rule (LTR LCR). Studies include piloting an increased orthophosphate dose, scale analysis of lead service lines, profile sampling of homes, and researching the effect of construction activities on lead levels. This presentation will summarize the projects and findings to date.

4:00 pm Cybersecurity for Water Sector Critical Infrastructure David Espy, Jacobs (Presented by Glen Price, Jacobs)

This presentation covers the current cyber threats to critical infrastructure Industrial Control Systems (ICS), the need to be security aware, and the current cybersecurity standards and guidelines for ICS in the water sector. The presentation will delve into the specifics of security practice for ICS covering the main security concepts and how to apply them.

September 12, 2019 9 ”

Watershed – An area of land, a bounded hydrologic system; within which all living

things are inextricably linked by their common water course and where, as humans

settled, simple logic demanded that they become part of a community.– John Wesley Powell

“

New York City’s Water Supply System Map


Thank You to Our Sponsors!

2019 Watershed Exhibitors

Arold Construction Company, Inc. has been a family owned and operated business since 1973. We perform trenchless pipe and manhole lining, utility line cleaning and inspection. Our customers are municipalities or government agencies. [email protected] www.aroldcompanies.com

Emmons Pump & Control, Inc. is upstate New York’s leading choice for full-service pump and motor repair. If it has to do with pumps and motors, we’re the ones you want to call. We sell and service sump, grinder, sewage, commercial, industrial, hydromatic pumps, and more. [email protected] www.emmonspump.com

G.P. Jager Inc.’s mission is to ensure your complete satisfaction with our manufacturers’ products and ser-vices. Representing 60+ high quality manufacturers of water and wastewater treatment equipment in New York and Northern New Jersey, we know that our projects must be well-engineered and competitively priced. GPJ’s product offering includes virtually every biological process, filtration, clarification, disinfection, chem-ical feed and mech anical equipment available for water and wastewater treatment. Our expert sales force has over 150 collective years of engineering and plant operation experience, and is ready to serve our clients with a focused commitment to outstanding customer service. [email protected] www.jagerinc.com

Hach’s mission is ensuring water quality for people around the world. Our vision is to make water analysis better, faster, simpler, greener and more informative via unsurpassed customer partnerships, the most knowl-edgeable experts, and reliable, easy-to-use products. [email protected] www.hach.com

IDEXX Laboratories, Inc. provides easy, rapid, accurate and cost effective microbiological testing solutions that ensure water quality in drinking, waste and recreational waters and are supported by a team of experts. [email protected] www.idexx.com/water

Koester Associates provides consistent, high quality solutions to the water and wastewater industry. Repre-senting industry leading manufacturers, Koester covers all of New York State, including Long Island, New Jersey and Canada for sales, application, implementation, and servicing. [email protected] koesterassociates.com

Schnabel Engineering is a civil, geotechnical and water resource engineering firm of 300+ professionals specializing in dam safety, transportation, tunneling, and building projects from 19 locations in the United States. [email protected] www.schnabel-eng.com

Surpass Chemical is a sodium hypochlorite manufacturer and water/wastewater ‘one-stop-shop’ chemical distributor out of Albany, NY. Technical support as well as water/wastewater/PE-certified chemical training available onsite to our customer base. We maintain our own fleet of tanker and trailer trucks. [email protected] www.surpasschemical.com


Changes to Stormwater Regulations and Innovative Ways to Comply

November 19, 2019Syracuse Marriott Downtown, Syracuse, New York

Conference Objectives3 Learn about the upcoming changes to the MS4 General

Permit.3 Learn about the Construction General Permit. 3 Learn about examples of successful Stormwater

programs.3 Learn about funding opportunities.3 Learn about applying GI practices in non-MS4

communities.

Visit nywea.org to view Conference program.

Notes


2019Upcoming

Training Classesand Meetings

October 10, 2019 Collection System – infiltration and inflow Town of Colonie Operations Center, 347 Old Niskayuna Rd., Latham, NY

October 23, 2019 Coagulants, Polymers, Metering Pumps & Blending Systems Slater Chemical Fire Co., 76 Old Glenham Road, Glenham, NY

October 24, 2019 Collection System – infiltration and inflow Bergen Point WWTP, 600 Bergen Avenue, Babylon, NY

November 6, 2019 Building NY’s WRRF Interest in Strategic Energy Management Yonkers Joint WWTP, 1 Fernbrook Street, Yonkers, NY

November 7, 2019 Collection System – infiltration and inflow Chenango Town Hall, 1529 State Route 12, Binghamton, NY

November 12, 2019 Mathematics for Water and Wastewater Operators Van Lare Plant Training Room, 1574 Lake Shore Blvd., Rochester, NY

November 19, 2019 Stormwater Specialty Conference Syracuse Marriott Downtown, Syracuse, NY

November 20, 2019 Collection System – infiltration and inflow Niagara County Fire Training Center, 5574 Niagara Street Extension, Lockport, NY

February 3-5, 2020 NYWEA 92nd Annual Meeting & Exhibition Marriott Marquis, New York City

June 2020 NYWEA Spring Technical Meeting & Exhibition TBA

Visit nywea.org for information.

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