Dewey Loeffel Landfill

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Dewey Loeffel Landfill

• Fish Monitoring Update
• February 2009

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Site Location Map
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Operable Units
O.U. 3 Drainageways
O.U. 1 Landfill
O.U. 2 Groundwater and Leachate
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Remedial Program

• Operable Unit 03
• Removal of PCBs in Drainageways
• Sediment Removals (Tributary 11A Area 28 of
  Valatie Kill)
• Monitoring of Residual PCBs in the Ecosystem
• Inspection Program for Nassau Lake Dam

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Remedial Measures Undertaken in theOU-3
Drainageways To-Date

• GE implemented the Mead Road Pond Interim
  Remedial Measure between June and October 2001,
  which resulted in the removal of approximately
  9600 tons of PCB contaminated soils and sediments
  in the area immediately adjacent to the disposal
  site and in Mead Road Pond, a short distance
  downgradient of the site.
• GE implemented the T11A remedial removal action
  between October 2002 and February 2003, which
  resulted in removal of virtually all of the
  PCB-contaminated sediments from the former Mead
  Road Pond to the confluence of the Valatie Kill.
  Approximately 1,200 tons of PCB-contaminated soil
  was removed and disposed of at a permitted
  off-site facility.

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Site Location Map
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Remedial Measures Undertaken in theOU-3
Drainageways To-Date (cont)

• .GE implemented the Area 28 remedial removal
  action between August 2003 and May 2004, which
  resulted in removal of approximately 4000 tons of
  PCB-contaminated soil and sediments from the
  Valatie Kill.
• .A total of approximately 15,000 tons of
  PCB-contaminated soil and sediments have been
  removed from the drainageway upstream of Nassau
  Lake. Effectiveness of the source PCB to Nassau
  Lake is now being evaluated.

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Site Location Map
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Five Year Review

• Start Date for 5-Year Fish Monitoring 2006
• Fish Collected in 2006 Represent Baseline
  Conditions
• No longer exhibit short-term adverse
  environmental impacts caused by intrusive
  construction activities in Area 28 in 2004 -2005.