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Transcript of Waste Site Cleanup Advisory Committee Meeting Agenda Waste Site Cleanup Advisory Committee Meeting...
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Waste Site Cleanup Advisory Committee Meeting Waste Site Cleanup Advisory Committee Meeting AgendaAgenda
April 25, 2013, MassDEP, One Winter Street Boston9:30 am General updates - Assistant Commissioner Ben Ericson
10:00 Forms/guidance to be updated to support MCP amendments- Liz Callahan/Paul Locke
10:15 Gardening BMPs & outreach/implementation - Paul 10:30 Consideration of new approaches to define & evaluate
short-term risk/Imminent Hazards under the MCP (Note: longer term discussion; not part of the current amendments) - Paul
11:00 Source control scenarios & proposed provisions - Liz 11:30 Adjourn
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Amendment Implementation Amendment Implementation – Guidance & Form Updates
• Timeframes – by effective date, close to effective date, can wait
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Guidance Revision PrioritiesGuidance Revision Priorities
• LNAPL amendments – revisions to the VPH/EPH guidance (2002) or separate document LNAPL Workgroup
• Interim Final Vapor Intrusion Guidance (2011)• Draft AUL Guidance (2010) - finalize;
incorporating earlier public comment and changes to reflect amendments
• New Q&As to assist in implementation of amendments
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Other Guidance UpdatesOther Guidance Updates
• Retire NRS Guidance Manual • Lower priority - Update references/terminology
in other guidance, old Q&As, fact sheets and technical updates
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Forms/Database...Forms/Database...
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Permanent Solutions With Conditions But No AUL
For Potential Gardening Exposures
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Issue #1: What Are the Recommended BMPs?
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Other People’s Information
We don’t have to… don’t want to… reinvent the wheel or BMPs…
just Google® it
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Issue #2: What Is DEP’s Enforcement Angle?
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• As Proposed, the MCP would REQUIRE that the Permanent Solution Statement contain RECOMMENDATIONS for the use of Gardening BMPs under certain conditions.
• The relevant question is:“Does the PSS contain the appropriate BMP
recommendations?
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DEP’s Goal is to educate & inform & minimize potential exposures where the direct contact
risks are already demonstrated to pose NSR, and the incremental exposure – even without BMPs – is thought to be minimal but difficult to quantify.
Question for Public Comment:Would the proposal do this?
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Source Elimination/ControlSource Elimination/Control
• Source elimination or control is an existing requirement (40.1003(5))
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Why Change It?Why Change It?• Other proposed amendments – Permanent Sol’n
with Active Pathway Elimination Systems and elimination of the LNAPL UCL - remove requirements that now define the endpoint for cleanup
• Providing more specificity re: adequate source control intended to ensure that the source is stable, prevent occurrence of new/unforeseen exposures after Permanent Sol’n and minimize the time period for existing impacts
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Some MCP Context Some MCP Context • Difference between source elimination/control
for sudden releases versus historical sites• Other MCP requirements:
– expedite source elimination and control activities...
2- and 72-hour notifications trigger Immediate Response Actions, SRM & CEP require response
– aim at ensuring adequate temporal/spatial characterization of site conditions and risk, e.g., nature and extent, CSM, risk characterization, representativeness
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Source Elimination/ControlSource Elimination/Control• Provide basic definition of “Source of OHM
Contamination” – refers to the original OHM release location and/or
contaminated media from which OHM can migrate
• Source of OHM Contamination shall be eliminated, if feasible
• If not feasible, then Source must be controlled; performance standards for “Source Control” are specified
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Proposed DefinitionProposed DefinitionSource of OHM ContaminationSource of OHM Contamination
means a point of discharge of OHM into environmental media and/or OHM within environmental media, that is migrating or likely to migrate in a dissolved or vapor state or as a separate phase liquid. Sources of OHM may include, without limitation:
1. leaking storage tanks, vessels, drums and other containers;
2. dry wells or wastewater disposal systems that are not in compliance with regulations governing discharges from those systems;
3. contaminated fill, soil and sediment;4. sludges and waste deposits; and5. Nonaqueous Phase Liquids.
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Source Control Source Control Performance StandardsPerformance Standards
• Absence of Non-Stable NAPL• Removal of LNAPL to extent feasible
(using LCSM principles)• OHM plumes in any media not expanding• Absence of DNAPL constituent
concentrations greater than 1% of their solubility limit
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Scenario #1
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OVERBURDEN
GROUNDWATER
BEDROCK
TANK
#1
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OVERBURDEN
GROUNDWATER
BEDROCK
LEAK
TANK
#1
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OVERBURDEN
GROUNDWATER
BEDROCK
LEAK
TANK
#1
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OVERBURDEN
GROUNDWATER
BEDROCK
TANK
#1
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OVERBURDEN
GROUNDWATER
BEDROCK
• Tank removed• Soil removed
#1
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OVERBURDEN
GROUNDWATER
BEDROCK
• Tank removed• Soil removed
#1
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OVERBURDEN
GROUNDWATER
BEDROCK
• Tank removed• Soil removed
#1
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Scenario #2
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OVERBURDEN
GROUNDWATER
BEDROCK
TANK
#2
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OVERBURDEN
GROUNDWATER
BEDROCK
LEAK
TANK
#2
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OVERBURDEN
GROUNDWATER
BEDROCK
LEAK
TANK
#2
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OVERBURDEN
GROUNDWATER
BEDROCK
TANK
#2
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OVERBURDEN
GROUNDWATER
BEDROCK
TANK
#2
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OVERBURDEN
GROUNDWATER
BEDROCK
#2
• Tank removed• Soil removed
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OVERBURDEN
GROUNDWATER
BEDROCK
#2
• Tank removed• Soil removed
Public Water
SSDS
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Scenario #3
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OVERBURDEN
GROUNDWATER
BEDROCK
TANK
#3
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OVERBURDEN
GROUNDWATER
BEDROCK
LEAK
TANK
#3
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OVERBURDEN
GROUNDWATER
BEDROCK
TANK
#3
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OVERBURDEN
GROUNDWATER
BEDROCK
#3
• Tank removed• Soil removed
![Page 45: Waste Site Cleanup Advisory Committee Meeting Agenda Waste Site Cleanup Advisory Committee Meeting Agenda April 25, 2013, MassDEP, One Winter Street Boston.](https://reader036.fdocuments.in/reader036/viewer/2022062519/56649ebf5503460f94bc909d/html5/thumbnails/45.jpg)
OVERBURDEN
GROUNDWATER
BEDROCK
#3
• Tank removed• Soil removed
![Page 46: Waste Site Cleanup Advisory Committee Meeting Agenda Waste Site Cleanup Advisory Committee Meeting Agenda April 25, 2013, MassDEP, One Winter Street Boston.](https://reader036.fdocuments.in/reader036/viewer/2022062519/56649ebf5503460f94bc909d/html5/thumbnails/46.jpg)
OVERBURDEN
GROUNDWATER
BEDROCK
#3
• Tank removed• Soil removed
![Page 47: Waste Site Cleanup Advisory Committee Meeting Agenda Waste Site Cleanup Advisory Committee Meeting Agenda April 25, 2013, MassDEP, One Winter Street Boston.](https://reader036.fdocuments.in/reader036/viewer/2022062519/56649ebf5503460f94bc909d/html5/thumbnails/47.jpg)
OVERBURDEN
GROUNDWATER
BEDROCK
#3
• Tank removed• Soil removed
Public Water
SSDS
![Page 48: Waste Site Cleanup Advisory Committee Meeting Agenda Waste Site Cleanup Advisory Committee Meeting Agenda April 25, 2013, MassDEP, One Winter Street Boston.](https://reader036.fdocuments.in/reader036/viewer/2022062519/56649ebf5503460f94bc909d/html5/thumbnails/48.jpg)
OVERBURDEN
GROUNDWATER
BEDROCK
#3
• Tank removed• Soil removed
Public Water
SSDS
![Page 49: Waste Site Cleanup Advisory Committee Meeting Agenda Waste Site Cleanup Advisory Committee Meeting Agenda April 25, 2013, MassDEP, One Winter Street Boston.](https://reader036.fdocuments.in/reader036/viewer/2022062519/56649ebf5503460f94bc909d/html5/thumbnails/49.jpg)
BEDROCK
#3
• Tank removed• Soil removed
Public Water
SSDS
![Page 50: Waste Site Cleanup Advisory Committee Meeting Agenda Waste Site Cleanup Advisory Committee Meeting Agenda April 25, 2013, MassDEP, One Winter Street Boston.](https://reader036.fdocuments.in/reader036/viewer/2022062519/56649ebf5503460f94bc909d/html5/thumbnails/50.jpg)
BEDROCK
#3
• Tank removed• Soil removed
Public Water
SSDS