FEDERAL FACILITY AGREEMENT: PEASE AIR FORCE BASE
6/8/21 The ESD documents the operation of a Ground Water Extraction & Treatment System (GWETS) to capture the migration of PFAS contaminated ground water within Zone 3 � Operable Unit 7 at the Pease AFB NPL Site. Ground water restoration goals, based on NH AGQS were established for PFOS, PFOA, PFNA, & PFHxS. Treated ground water from the GWETS must also meet these chemical-specific ARARs before being recharged back to the aquifer. LUCs established as part of the original Zone 3 ROD will continue to be maintained, monitored, & enforced and do not change in scope.
12/5/19 OU7 ROD amendment
FY 2014: OU7 Site 49 - Enhanced bioremediation
FY 2013: ? The 2012 ESD for OU-7 addresses residual ground water contamination at Site 73 (an area of concern in Pease AFB Zone 3 ? OU7).
? A 2003 ROD amendment codified the construction & operation of a permeable reactive barrier (PRB) to treat chlorinated solvent contaminated ground water at Site 73.
? The PRB has significantly reduced chlorinated solvent concentrations.
? The 2012 ESD calls for the injection of a emulsified vegetable oil/bio-augmentation solution into the aquifer to ?polish? in-situ residual ground water contamination to cleanup standards in a shorter restoration period than the existing PRB can achieve.
*** This ESD does not address any new or additional contamination than what was already covered by the 2003 ROD Amendment. Therefore, a contaminated vol