Superfund Information Systems: Site Profile

Superfund Site:

COAKLEY LANDFILL
NORTH HAMPTON, NH

Operable Units

Below, EPA has provided a list of the remedial actions selected pertaining to each operable unit.

EPA issues Records of Decision (RODs) to explain which cleanup methods will be used at Superfund National Priorities List sites. EPA has two primary documents that it may use to identify changes to the remedies selected in RODs. EPA uses a ROD Amendment when it needs to make a fundamental change to the remedy. EPA publishes an Explanation of Significant Differences (ESD) for significant changes.

During cleanup, complex sites may be divided into several distinct areas to make the response more efficient. These areas, called operable units (OUs), may address geographic areas, specific problems, or medium (e.g., groundwater, soil) where a specific action is required.

EPA is working to improve data quality. The information presented on this page is undergoing review for accuracy and completeness, and may be subject to change.

OU ID Name Decision Document Cleanup Technologies Selected
in the Decision Document
00 SITEWIDE No decision document
01 SOURCE Record of Decision
June 28, 1990
Air Stripping (P&T, exsitu)
Bioremediation (other, NOS, insitu)
Cap (engineered cap)
Cap (exsitu)
Consolidate (onsite)
Discharge (surface water/NPDES discharge)
Discharge (vertical well reinjection to contaminated aquifer)
Excavation
Extraction (recovery/vertical well)
Landfill Gas Collection/Treatment
Monitoring
Off-gas Treatment (other, NOS)
Operations & Maintenance (O&M)
Precipitation (P&T, exsitu)
01 SOURCE Explanation of Significant Differences
March 22, 1991
Cap (engineered cap)
Cap (exsitu)
Residuals Treatment/Disposal (onsite)
01 SOURCE Explanation of Significant Differences
May 17, 1996
Gas Collection System (passive)
01 SOURCE Explanation of Significant Differences
September 29, 1999
Data not available
01 SOURCE Explanation of Significant Differences
September 20, 2007
Data not available
01 SOURCE Explanation of Significant Differences
July 29, 2009
ESD - Nonfundamental Change (other)
02 OFFSITE GW Record of Decision
September 30, 1994
Institutional Controls
Monitored Natural Attenuation
Monitoring
02 OFFSITE GW Explanation of Significant Differences
September 20, 2007
Data not available
02 OFFSITE GW Explanation of Significant Differences
July 29, 2009
ESD - Nonfundamental Change (other)
02 OFFSITE GW Explanation of Significant Differences
August 04, 2015
ESD/Amd - COC(s) Change
ESD/Amd - Cleanup/Performance Standard Change
ESD/Amd - ICs - Implement or Change
ESD/Amd - Treatment Area Change

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