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1 GREENLAND North Hampton Rye Existing Subdivision Site Orientation Coakley Landfill Coakley Landfill -- July 20th 2016 Task Force Update
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GREENLAND
North Hampton
Rye
Existing Subdivision
Site Orientation
Coakley Landfill
Coakley Landfill -- July 20th 2016 Task Force Update
GMZ & Bedrock Groundwater Flow
Direction of groundwater flow
2 Coakley Landfill -- July 20th 2016 Task Force Update
Monitoring Locations (Groundwater, Surface Water and Sediment)
3 Coakley Landfill -- July 20th 2016 Task Force Update
Extent of Contamination (1,4-Dioxane)
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MW-4 (ppt) PFOA 756 PFOS 31
MW-8 (ppt) PFOA 262 PFOS 212
MW-5D (ppt) PFOA 61 PFOS 29
MW-9 (ppt) PFOA 656 PFOS 452
BP-4 (ppt) PFOA 58 PFOS 13
MW-11 (ppt) PFOA 693 PFOS 308
MW-5S (ppt) PFOA 647 PFOS 84
Summary of May 2016 PFC Results from OU-1 Wells
Coakley Landfill -- July 20th 2016 Task Force Update 5
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Coakley Landfill -- July 20th 2016 Task Force Update
Coakley Landfill
Coakley Landfill -- July 20th 2016 Task Force Update 7
July 2016 PFC Residential Well Sampling Locations
PFC Sampling Summary
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• Results for PFCs in residential wells are expected at any moment.
• Results for PFCs at OU-2 monitoring wells are expected during the first week of August.
• The public will be informed of all results as soon as possible.
• The entire data set will be considered to determine next steps.
Coakley Landfill -- July 20th 2016 Task Force Update
Technical Information Contacts
Andrew Hoffman, P.E. Project Manager NH Department of Environmental Services Tel. (603) 271-6778 E-mail: [email protected]
Gerardo Millán-Ramos Project Manager U.S. EPA - New England, Region 1 Tel. (617) 918-1377 E-mail: [email protected]
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Robin Mongeon, P.E. Supervisor Federal Site NH Department of Environmental Services Tel. (603) 271-7378 E-mail: [email protected]
Coakley Landfill -- July 20th 2016 Task Force Update
