dupont/pompton lakes works public availability sessions · dupont pompton lakes works public...
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Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
6/25/2013
JUNE 19, 2013
DuPONT POMPTON LAKES WORKS PUBLIC AVAILABILITY SESSIONS
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STATUS OF PERMIT APPEALS
• Permit Appeals by DuPont & Passaic River Coalition - - February 2013 • Stay of the Permit Appeal Requires:
– August 26, 2013: Progress Status Report – October 25, 2013: EPA Response if Issues Unresolved
• Meetings with DuPont – Progress to Determine Scope of Sediment/Ecological Risk – Fieldwork to Resolve Appeal – Fieldwork Expected in July/August
• Meetings with Passaic River Coalition: Status Update
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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STATUS OF BIOREMEDIATION PILOT
Activities Conducted – May 2013 • Soil Gas Probe/Water Level Loggers Installed in
Injection/Extraction Wells
• Start-up/Leak Testing to Ensure Functionality
• Electrical Work Required Repair
• Baseline Sampling Conducted
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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STATUS OF BIOREMEDIATION PILOT
Activities – Week of June 10th
• EPA Site Visit to Observe System – June 6th • Pre-Pilot Initiation Test with Water to Injection Pumps
“Dosing” Correctly
• Bromide Injection to Verify Recirculation is Occurring
• Sodium Lactate Injection
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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STATUS OF BIOREMEDIATION PILOT Pilot Study Performance Monitoring • Daily (First 2 Weeks)
– Monitoring Circulation of Lactate and Water Levels
• Bi-weekly (As of July 1st) – Sampling Extraction Well and Monitoring Well at Two
Depths
• Monthly (As of July 1st) – Additional Well Sampling at Multiple Depths/Soil Gas
Sampling
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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EISB Pilot Study Extraction Well and Instrumentation (Chamber Interior)
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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STATUS OF HORIZONTAL WELL FLUSHING
Design Plan for the Hydraulic Surcharging
• Establish Location of Piping
• Water Table Monitoring
• NJDEP Permit-By-Rule - Will be for Greater than 180 days - Outreach and Public Notice to be Determined
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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RESULTS of MAY 16 TECHNICAL GROUNDWATER MEETING
• Technical Reps from EPA/CAGs/DuPont Attended and
the Consensus was that It Went Very Well
• General Agreement that Hydraulic Flushing of the Shallow Groundwater Zone Had Potential to be Very Effective
• Remedial Technologies to Address Contamination Causing Vapor Intrusion are Limited
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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FOLLOW-UP TO MAY 16 TECHNICAL MEETING
• EPA to Review 2010 Report on Alternative GW
Remedial Technologies
• EPA to Perform Analysis to Determine Correlations Between VOC Concentrations in the Soil Gas and in GW
• EPA to Evaluate Potential to Employ Additional Technologies to Address Vapor Intrusion
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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STATUS UPDATE – VAPOR INTRUSION PROGRAM
• Vapor Mitigation Systems Installed
– 247 (DuPont/O’Brien & Gere) – 56 (Third Party Contractor)
• Vapor Mitigation Systems “In Pipeline” For Installation – 3 (DuPont/O’Brien & Gere) – 26 (Third Party Contractor)
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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FISH ADVISORY SIGNAGE
• Concerns Raised About Need for Additional Fish
Advisory Signage for Pompton Lake
• Local Officials Purchasing Additional Signage (7 in English/Spanish for Placement)
• Locations Include: Within Rotary Park/Ramp Area with Signs Facing Water/Lakeside Avenue Bridge
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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RESULTS OF CLADDING TUNNEL INSPECTION
• Concerns Raised About Presence of Depleted Uranium
in Tunnel
• Department of Energy File Review Indicated No Depleted Uranium Was Ever Present on the DuPont Pompton Lakes Works Site
• EPA Radiological Specialist Inspection June 6th Revealed No Presence of Depleted Uranium
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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• DOE Radiological Record Search: No Records Related to Depleted Uranium or Other Radiological Contaminants
• EPA Physical Inspection: All radiation
readings at entrance of the tunnel and inside tunnel were within the natural background level ranging from 6-16 uR/h
Review of Cladding Tunnel Inspection
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REVIEW OF AIR MONITORING/MODELING PROPOSAL
• Received Proposal for Air Monitoring/Modeling in
Pompton Lakes Vapor Mitigation Area
• Rationale for Proposal Indicated that NJDEP Modeling had Underestimated VOC Emissions
• EPA and NJDEP Reviewed the Proposal
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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REVIEW OF AIR MONITORING/MODELING PROPOSAL FINDINGS:
• Modeling Previously Performed by NJDEP Followed EPA
Guidelines
• Contractor Model Run in “Rural” Mode, Limiting Nighttime Dispersion vs. Using Data from Newark Only Causes Minor Increase in VOC Concentrations
• VOC Emissions From the Air Stripper Is the Dominant Source
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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REVIEW OF AIR MONITORING/MODELING PROPOSAL (continued) • Increasing the Contribution of VOC Emissions From Soil in the Modeling
Would Not Likely Cause Exceedance of a Health-Based Benchmark
• 600+ Ambient Air Samples From the Community Over 5-Years Support Conclusion that VOC Contributions from Soil are Low
• Sampling Transects in Neighborhood May Not Produce Results Indicative of Exposure to VOCs from the Subsurface Due to Other Potential VOC Sources in the Community
• If Valid Samples Could be Taken, Sampling Protocol Requires Extensive QA/QC Documentation to Meet Goals of the Community & Meet EPA Standards for Sampling and Analysis
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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QUESTIONS??????
6/25/2013
Region 2 serving the people of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands
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