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PM STRAUSS & ASSOCIATES Energy and Environmental Consulting MEMORANDUM TO: CPEO
FROM: Peter Strauss DATE: March
22, 2017 SUBJ: Hangars
1, 2, and 3 at Moffett Field Summary There
are two relatively new issues involving the large hangars at Moffett Federal
Airfield (MFA). At the last November 2016 Restoration Advisory Board (RAB)
meeting, there was a brief discussion about Google’s subsidiary Planetary
Ventures (PV) subsurface investigation at Hangars 2 and 3, both of which were
built primarily of wood. That investigation found greater than expected concentrations
of chlorinated volatile organic compounds (CVOCs), including trichloroethylene
(TCE) and tetrachloroethylene (PCE)
in sub-slab soil-gas samples. As a result of the sampling, U.S. EPA Region 9
and the Regional Water Quality Control Board (RWQCB) requested that the Navy
submit a plan for a Supplemental Remedial Investigation of the area that
includes the two hangars (known as Site 7). Because this request was not acted
on in a timely manner, EPA and the Water Board initiated informal dispute
resolution with the Navy. Since that time, the Navy has agreed to conduct
additional sampling, but to my knowledge it has not yet submitted a work plan. At
the larger, steel-framed Hangar 1, the preservation of which has been a cause
celebre for more than a decade, EPA has signed a Bona Fide Prospective
Purchaser (BFPP) Agreement letter and granted permission to PV to go ahead with
a pilot study to evaluate methods for removing the Navy-applied epoxy coating from
the hangar frame.
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To download the entire 7-page, 180 KB report, go to
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Lenny Siegel Executive Director Center for Public Environmental Oversight a project of the Pacific Studies Center P.O. Box 998, Mountain View, CA 94042 Voice/Fax: 650/961-8918
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