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Pacific Southwest, Region 9: Superfund

Serving Arizona, California, Hawaii, Nevada, the Pacific Islands, and Tribal Nations

Naval Air Station Moffett Field

EPA #: CA2170090078

State: California(CA)

County: Santa Clara

City: Moffett Field

Congressional District: 14

Other Names: NAS Moffett Field, Moffett Field Naval Air Station See also MEW Study Area for more information regarding the Regional groundwater contamination

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Description and History

NPL Listing History

NPL Status: Final

Proposed Date: 04/10/85

Final Date: 07/22/87

Deleted Date:

The Naval Air Station (NAS) Moffett Field site is located 35 miles south of San Francisco and approximately 1 mile south of San Francisco Bay in Santa Clara County, California. The former Navy installation consists of approximately 1500 acres and is bounded by former evaporation salt ponds to the north, Stevens Creek to the west, U.S. Highway 101 (Bayshore Freeway) to the south, and the Lockheed Martin Aerospace facility to the east. NAS Moffett Field was commissioned in 1933 to support the "lighter than air" (LTA) program. Two years later the LTA program ended, but to support World War II, the LTA program was reactivated and a "heavier than air" program began to support fighter planes. The station became the largest naval air transport base on the west coast.

The Navy participated in the Installation Restoration Program, a specially funded program established by the Department of Defense (DOD) to identify, investigate, and control the migration of hazardous contamination at military and other DOD facilities. To date, 30 hazardous waste sites have been identified at the NAS Moffett Field site.

Ongoing work is being conducted at eight of these sites. The eight sites are:

  • Site 1 - Runway Landfill (part of Operable Unit 1)
  • Site 22 - Golf Course Landfill
  • SIte 25 - Eastern Diked Marsh and Stormwater Retention Basin
  • Site 26 - East-side Aquifer Treatment System Area (also referred to as the EATS Area)
  • Site 27 - Northern Channel
  • Site 28 - West-Side Aquifers Treatment System Area (also referred to as the WATS area)
  • Site 29 - Hangar 1
  • Orion Park Area (Currently owned by the U.S. Army)

Groundwater in the underlying aquifers beneath the site is not used for drinking water or other potable uses. Groundwater in the area is, however, a potential future source of drinking water and therefore groundwater cleanup standards have been established.

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Contaminants and Risks

Contaminated Media
  • Groundwater
  • Surface Water
  • Air
  • Soil and Sludges
  • Environmentally Sensitive Area

Impacts at the NAS Moffett Field site consist of soil and groundwater contamination from both petroleum products and volatile organic compounds (VOCs) such as trichloroethene (TCE) and tetrachloroethene or perchloroethene (PCE). There are also two landfills and one former landfill at the site. Sediments are contaminated in wetland areas of the base, primarily in outfall areas. The prime contaminants in the sediments are polychlorinated biphenyls (PCBs) and pesticides. The site is adjacent to other Superfund sites in the Middlefield-Ellis-Whisman (MEW) study area and Moffett Field's underlying groundwater is contaminated by activities from both operations.

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Who is Involved

This site is being addressed through federal actions. EPA is the lead regulatory agency overseeing the Navy's environmental investigation and cleanup work at NAS Moffett Field Superfund Site. The Regional Water Quality Control Board (Water Board) is the state support agency.

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Investigation and Cleanup Activities

Initial Actions

Initial Actions: Abandoned wells that may be potential conduits for subsurface cross-contamination have been evaluated and properly closed. Initial source control measures were implemented at Sites 12 and 14 include bioremediation of contaminated soil and treatment of groundwater through carbon absorption. These interim activities were completed in 1996. A groundwater extraction and treatment system was implemented at Site 9 (west side aquifers) and closed in mid-1997 to allow operation of a long-term groundwater extraction and treatment system that operates in conjunction with the MEW Regional Groundwater Remediation Program.

Site Studies

Base-Wide: In 1989, the Navy began a thorough investigation to determine the type and extent of contamination base-wide. The areas investigated included: east and west side contaminated soils, the westside aquifers, the eastside aquifer, three landfills and the wetlands area.

Site Studies

In 1984, the Navy began environmental restoration at NAS Moffett Field. The initial study included a review of available records on the handling of chemicals, interviews with site personnel, and a visual survey of activities conducted at the site. Other investigations have been conducted to assess potential source areas of contamination and the type and extent of contamination.


NAS Moffett Field was designated a closing base under the Base Realignment and Closure Act (BRAC II). Please see the Navy's Moffett Field web site for additional detailed information about environmental cleanup at the site.

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Cleanup Results to Date

An overview of each active site at NAS Moffett Field is provided below. These overviews include information about the investigation and cleanup activities that are planned or underway.

              • Site 1 - Runway Landfill (part of Operable Unit 1)
              • Site 22 - Golf Course Landfill
              • SIte 25 - Eastern Diked Marsh and Stormwater Retention Basin
              • Site 26 - East-side Aquifer Treatment System (also referred to as EATS)
              • Site 27 - Northern Channel
              • Site 28 - West-Side Aquifers Treatment System (also referred to as the WATS area)
              • Site 29 - Hangar 1
              • No Further Action Sites
              • Petroleum Sites

      Operable Unit 1 – Landfill Sites 1 and 2
      Site 1 is a 12-acre landfill that was used for the disposal of refuse and scrap equipment. It operated from the mid-1960s to the late 1970s. Site 2 was a 1-acre landfill used between the 1940s and 1952. The combined sites are known as Operable Unit 1 (OU1). Potential contaminants at Site 1 include volatile organic compounds (VOCs) (thinners, solvents, lacquer), petroleum products (oil, fuel filters), pesticides, sawdust contaminated with transformer oils (possibly containing PCBs) and paints. Site 2 reportedly received the same types of waste as Site 1.

      The Final Record of Decision (ROD) for OU1 was signed in 1997 and required consolidation of refuse from Site 2 with that at Site 1, as well as a multilayer cap to contain the wastes. Refuse from Site 2 was removed, the wastes were placed in the Site 1 landfill and the landfill was “capped.” Soil samples collected from the Site 2 excavation verified that all wastes had been removed. The Site 2 area was backfilled with clean material, and a fence was installed around the site to restrict access. Groundwater at Site 2 was tested quarterly through 2002. Test results consistently showed no contamination.

      EPA and the Water Board approved closure of Site 2 in early 2003. Because contaminants were removed, Site 2 was “clean closed” and is available for unrestricted use.

      At Site 1, the multilayer landfill cap was completed in November 1998. Long-term maintenance of the cap and monitoring of landfill gas and groundwater at Site 1 began in 1999, to make sure the landfill was not emitting unacceptable levels of gas and that contaminants were not getting into the groundwater or San Francisco Bay. Raptor perches were installed to naturally control burrowing animals, such as rodents and ground squirrels, that could damage the landfill cap. Several types of hawks and a golden eagle have been seen using the perches. These perches, in combination with other measures, have been successful in controlling ground squirrels. The California Integrated Waste Management Board inspected the cap and, in March 2000, approved the site’s closure.

      Two Five-Year Reviews for OU1 were completed in 2002 and 2007. The remedy continues to be protective of human health and the environment. The Navy continues to maintain the Site 1 landfill cap and monitor landfill gas and groundwater. In 2004, the monitoring changed from quarterly to semiannually based on 5 years of sampling data confirming that contaminants were not being released to the environment. The Santa Clara County Department of Environmental Health inspects Site 1 quarterly and periodically conducts landfill gas monitoring. All landfill gas monitoring results showed only very low emissions, well within safe limits.

      Site 22 – Golf Course Landfill
      The Site 22 landfill covers 11 acres. The Navy operated the landfill from about 1950 to 1967, mainly for domestic waste disposal. The waste is buried at least 3 feet below the ground surface. By 1973, the Site 22 landfill had been converted into holes 3, 6 and 7 of the Moffett Field Golf Course. Between 1994 and 1999, the Navy conducted soil and groundwater studies, called a remedial investigation, and identified the type and extent of contaminants throughout the site. Soil and groundwater at Site 22 contain VOCs, semivolatile organic compounds and pesticides. Shallow groundwater beneath the landfill is not used for drinking water. Groundwater monitoring is being conducted to make sure contaminants are not migrating from the site.

      The studies also evaluated the potential for landfill gas to build up and migrate from the site. It was found that landfill gases are not escaping into the air or moving underground beyond the site. The studies concluded that as long as the landfill waste remains buried, there is no risk to human health or the environment. However, burrowing animals such as ground squirrels, were bringing refuse to the surface, which created a potential risk to human health at the golf course. This was the primary concern for the site and the focus of the cleanup action.

      The selected cleanup remedy, a biotic barrier made of gravel and cobblestone was documented in a ROD, which was signed in June 2002 by the Navy, EPA and Water Board. “Biotic” refers to the fact the barrier will keep out animals. Construction of the biotic barrier was completed in August 2003 and is described in the Navy's April 2004 Remedial Action Report. The biotic barrier covers the refuse while allowing the landfill to be used as part of a golf course.

      Regular maintenance and long-term monitoring of groundwater and landfill gas is ongoing at Site 22, as required under the September 2003 Post-Construction Operations, Maintenance, and Monitoring Plan. A Five-Year Review for the Site 22 Landfill was completed in 2008. The remedy continues to be protective of human health and the environment.

      Site 25 – Eastern Diked Marsh and Stormwater Retention Pond

      Site 25, located in the northwestern portion of Moffett Field, includes NASA's 175-acre Stormwater Retention Pond and the Eastern Diked Marsh, as well as approximately 52 acres belonging to the Midpeninsula Regional Open Space District (MROSD). Site 25 has been used for the past 50 years by the Navy and NASA to manage stormwater at Moffett Field. Levees border the north and east sides of the Stormwater Retention Pond and the west side of the MROSD parcel. These levees provide flood protection for Moffett Field and adjacent properties. Historical photographs reveal that levees, blocking the area from tidal flow, were built before Moffett Field was developed.

      The environment at Site 25 is commonly called a “seasonal wetland” (the area is wet for most of the year due to rainfall but dries out for a certain amount of time each summer or fall). As a result, Site 25 had been evaluated for a cleanup remedy that would make the site safe for the existing seasonal wetland ecosystem. NASA intends to change the site use to a “managed pond.” This area will serve as the stormwater retention pond during the winter and be kept wet during dry months via a connection to San Francisco Bay. The other property owner, MROSD, plans to convert its property to a “tidal marsh” by connecting it to San Francisco Bay.

      The Navy evaluated cleanup scenarios that would allow a managed pond, tidal marsh, and seasonal wetland. The evaluation included learning what plants and animals live in managed ponds and tidal marshes as compared to seasonal wetlands. It also involved figuring out the chemical levels that are safe for these plants and animals. Due to changes in projected future ecological use at the site, the Feasibility Study (FS) was amended with an FS addendum in 2007. Based on the FS addendum findings, the Navy issued a Proposed Plan in January 2009. The Proposed Plan recommended restoring Site 25 to a tidal marsh by excavating contaminated sediments, treating certain areas with lead and zinc contamination, and disposing of the sediments off-site. Following a public comment period on the Proposed Plan, the Navy, with EPA concurrence and State consultation, selected this final cleanup approach in a Record of Decision (ROD) for Site 25 in 2009. Site 25 cleanup was completed in 2013.

      Site 26 -East-Side Aquifer Treatment System (EATS) Area
      The EATS area is located on the east side of Moffett Field, northeast of Hangar 3. Chlorinated solvents (TCE and PCE) were used at Hangars 2 and 3 and contaminated the groundwater underneath the site. TCE and PCE, as well as their breakdown products (cis-1,2-dichloroethene, 1,1-dichloroethene and vinyl chloride), were identified in groundwater. The groundwater in the area is not used for drinking water, and no buildings are located over the EATS site. An ecological risk assessment showed that plants and animals are not at risk from contaminants in groundwater.

      The cleanup remedy for the EATS area began operating in January 1999. The remedy includes a groundwater extraction and treatment system consisting of five extraction wells and an air stripper with carbon treatment. Groundwater is constantly pumped from each extraction well and is treated to remove the contaminants. The treated water is discharged to the Moffett Field storm drain system. In 2003, EPA and the Water Board approved the EATS Evaluation Work Plan for collecting data to evaluate the effectiveness of EATS. The data would also be used to evaluate other possible methods to clean up the groundwater. In July 2003, EATS was temporarily turned off to evaluate conditions when no groundwater extraction was occurring.

      The first Five-Year Review Report for the EATS area, a major milestone document, was approved by EPA in September 2005. The report recommends completing the work outlined in the EATS Evaluation Work Plan, which would include nutrient enhancement to speed up contaminant breakdown by naturally occurring microorganisms. In February and March 2005, nutrients, consisting of a product made from corn and corn-based oil, were injected into two "hot spot" areas of groundwater. The nutrients slowly release lactic acid, which is “eaten” by microorganisms in the groundwater. The microorganisms ultimately break down the solvents in the groundwater, cleaning it up.

      Groundwater has been monitored for the last several years after the nutrient injection to make sure that it is working. In 2008, the Navy finalized an evaluation report for the EATS area and proposed conducting a treatability test of an in-situ alternative technology in a "hot spot" area of the groundwater contamination plume. EPA approved the workplan and sampling plan and the Navy started the test in 2009. Results are back and the Navy is in the process of amending the ROD to select the final remedial approach.

      Site 27 - Northern Channel
      Site 27 consists of the Northern Channel and the associated ditches: Marriage Road Ditch, Patrol Road Ditch and the North Patrol Road Ditch, all of which drain into the Northern Channel. The Northern Channel is located at the northeastern end of Moffett Field, bordered on the north by ponds managed by the U.S. Fish and Wildlife Service (formerly Cargill Salt evaporation ponds), to the south by Moffett Field and, as the channel extends east, Lockheed Martin property. The property owners of the Northern Channel have included Cargill Salt, Lockheed Martin, NASA and the City of Sunnyvale. In addition to the surface water collected by these ditches, the Northern Channel receives stormwater through a system of surface channels and french drains (under the runway); this stormwater is pumped into the channel by the Building 191 lift station. This system is designed to control flooding on the east side of Moffett Field.

      The 2005 ROD for Site 27 documents the cleanup remedy, which includes the removal of contaminated sediment in the channel and ditches to protect the site’s ecosystem. Active excavation of contaminated sediment and soils was completed in January 2007. The Navy completed site restoration activities at Site 27 and finalized its Remedial Action Completion report in April 2012.

      Site 28 - West-Side Aquifers Treatment System (WATS) Area
      The WATS area is located on the west side of the runways, near Hangar 1. Potential sources of groundwater contamination in the WATS area include a former dry cleaning facility (chlorinated solvents), former fuel storage and wash rack facilities (petroleum hydrocarbons) and former manufacturing facilities south of Moffett Field (chlorinated solvents). In 1994, the Navy removed contaminants in the soil under Building 88; the process included the demolition of Building 88 and removal of an associated tank and sumps. The Navy began groundwater extraction and treatment in the Building 88 area the same year.

      Contamination from dry cleaning activities at Building 88 and fuel operations has mixed with a VOC plume originating from the MEW Superfund Study Area located just south of Moffett Field. The MEW Study Area is named by the streets that generally bounds the area - Middlefield Road, Ellis Street, and Whisman Road . The companies responsible for investigating and cleaning up the MEW Site are collectively called the MEW companies. The contamination plume co-mingled with Navy and MEW contamination is referred to as the “regional groundwater VOC plume” or regional plume. See the Middlefield-Ellis-Whisman (MEW) Study Area for more information.

      The Navy’s groundwater extraction and treatment system is an integral component of the regional groundwater remediation program. WATS began operating in November 1998. WATS consists of nine extraction wells and a groundwater treatment system located west of Hangar 1. The extraction wells constantly pump approximately 70 gallons of contaminated groundwater per minute. This water is treated to remove the contaminants and then discharged to the Moffett Field storm drain system. The groundwater treatment system includes an advanced oxidation process and granular activated carbon (GAC) vessels. The GAC vessels were added in July 2001 to “polish” the treated water. The majority of the VOCs are chemically changed into carbon dioxide and water, and any remaining contaminants are removed in the GAC vessels. The Navy modified the treatment system in May 2003 to eliminate VOC air emissions by removing the system’s “air stripper.”

      The Navy began optimization efforts later in 2003 to accelerate cleanup of the site. This work included adding the ninth extraction well and collecting data for further evaluation of the former dry cleaning facility, Building 88. Results of work completed in December 2004 indicated that more fieldwork was needed to evaluate potential sources apparently originating from the Building 88 area. The Navy completed an additional investigation of the former Building 88 area in 2005 and EPA is working closely with the Navy on implementing a pilot test to reduce mass and cleanup the groundwater faster in this area.

      Site 29 - Hangar 1
      Hangar 1 was constructed in 1932 to house the giant airship U.S.S. Macon. Its floor space covers 8 acres (or the equivalent of 10 football fields) and it stands 200 feet high. Over the years, the hangar provided space for maintenance of aircraft, training facilities and offices for both the Army and Navy. Hangar 1 is part of the property transferred to NASA Ames Research Center in 1994. It formerly housed the Moffett Field Historical Society Museum and was used as a display space for air shows, open houses and various commercial and public functions.

      The building materials and paint used to construct Hangar 1 contain PCBs, asbestos, lead and zinc. The hangar is aging and its paint and building materials are deteriorating. As a result, the contaminants in these materials moved into the environment around the hangar and, ultimately, reached Site 25 through the Moffett Field storm drain system. To ensure the protection of human health and the environment, in 2003 the Navy completed an interim control measure called a time-critical removal action. This included applying a specialized coating to the exterior surface of Hangar 1 to seal the materials on the building surface.

      In 2007, the Navy issued a draft revised Engineering Evaluation/ Cost Analysis (EE/CA) recommending removal of the Hangar 1 siding and coating the structural steel frame. The previous EE/CA (2006) had recommended complete demolition of the Hangar. The Revised EE/CA was finalized in July 2008. In January 2009, the Navy signed an Action Memorandum (AM), which declared that the Navy will proceed with the proposed EE/CA alternative, removing the siding and coating the frame. The Navy has completed the action and the structure is now awaiting a reuse plan by NASA, which will hopefully include re-skinning of the Hangar.

      No Further Action Sites
      Extensive study and evaluation of six sites showed that they could be recommended for “No Action.” According to federal law, No Action is appropriate for sites that do not present a potential threat to human health or the environment. The No Action sites at NAS Moffett Field are:
              • Site 23, Golf Course Fill Area 3
              • Weapons Storage Bunkers
              • Former Industrial Wastewater Flux Ponds
              • Former Abandoned Agricultural Well
              • Upland Soils (areas that support upland plant communities)
              • Station-Wide Remedial Investigation Human Health Risk Assessment Exposure Areas 3782, 3785, 3974, 4090 and 4158.
              • The east-side soils required no action (1994 OU2-East Record of Decision)

      In 2001, EPA and the Water Board agreed with the Navy and the sites were recommended for no further action in the Revised Final Station-wide Feasibility Study Report and its final addendum. The Navy issued a Proposed Plan for public review to provide information about the sites and the proposed decision, held a comment period and a public meeting, and issued a Responsiveness Summary responding to all comments received. On August 22, 2002, a ROD was signed documenting the No Action decision. These sites are now closed.

      Petroleum Sites
      The petroleum sites at NAS Moffett Field are being addressed under the California Leaking Underground Storage Tank Program, which is specific to petroleum-contaminated sites. Numerous underground storage tank/above ground storage tank cleanup activities are occurring, but have been removed from CERCLA through the Petroleum Exclusion. The State of California has lead oversight authority for petroleum product remediation. While these regulations are fully protective of human health and the environment, they do not fall under CERCLA.

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Potentially Responsible Parties

Potentially responsible parties (PRPs) refers to companies that are potentially responsible for generating, transporting, or disposing of the hazardous waste found at the site.


Online information about the PRPs for the site is not yet available.

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Documents and Reports


Hide details for Administrative RecordsAdministrative Records
Remedial
Update 3
Update 4
Update 5
Update 6
Hide details for Community InvolvementCommunity Involvement
04/15/13EPA presentation to Wescoat Village Residents: EPA Update - Residential Groundwater and Vapor Intrusion Sampling
11/12/13EPA Presentation – Neighborhood Meeting – EPA Update: Residential Vapor Intrusion and Groundwater Sampling
11/14/13EPA Update: Potential Source and Groundwater Investigation – Area South of Highway 101 – Moffett Field RAB Meeting
12/11/13EPA Presentation – MEW/Moffett CAB Meeting – EPA Potential Source Investigation and TCE Update – Area South of Highway 101
02/13/14EPA Vapor Intrusion Update (presentation) - Moffett Field RAB Meeting
Hide details for Fact SheetsFact Sheets
04/01/01Moffett Community Housing Groundwater Update - April 2001
02/01/02Moffett Community Housing Groundwater Update No. 2 - February 2002
08/01/02Moffett Community Housing Groundwater Update No. 3 - August 2002
08/01/03Moffett Community Housing Update No. 4 - August 2003
11/01/03Moffett Community Housing Air Update No. 5 - November 2003
01/01/04Moffett Community Housing Air Sampling Results - Update No. 6- January 2004
05/01/04Moffett Community Housing May Air Sampling - Update No. 7 - May 2004
11/01/04Moffett Community Housing Air Sampling Results - Update No. 8 - Nov 2004
06/09/05Moffett Community Housing Groundwater Update No. 9 - June 2005
07/09/09Updated - EPA Announces Proposed Plan for the Vapor Intrusion Pathway (English and Spanish)
07/23/09EPA Proposed Plan Public Meeting Presentation slides handout (color and black & white versions)
07/23/09Updated - Extends Public Comment Period to Sept 8, 2009 - EPA Announces Proposed Plan for the Vapor Intrusion Pathway (English and Spanish)
08/20/09Updated - Extends Public Comment Period to Oct 8, 2009 - EPA Announces Proposed Plan for the Vapor Intrusion Pathway (English and Spanish)
09/18/09Updated: Extends Public Comment through Nov 7, 2009 - EPA's Proposed Plan for the Vapor Intrusion Pathway
02/01/13EPA Update: Groundwater Sampling Results - Notice to Wescoat Village Residents
Hide details for Legal DocumentsLegal Documents
08/16/90Federal Facility Agreement For Naval Air Station Moffett Field
12/17/93Amendment To Federal Facility Agreement For Naval Air Station Moffett Field
09/16/11Amendment 91-4A to MEW Administrative Order for Vapor Intrusion Remedial Design and Remedial Action
Hide details for MapsMaps
12/08/11Vapor Intrusion Study Area - MEW Area - South of U.S. Highway 101 - updated December 2011
12/08/11Vapor Intrusion Study Area - Moffett Field Area - North of U.S. Highway 101 - updated December 2011
03/03/13Shallow Groundwater Results – Residential Area – South of 101 - March 2013 (shown with previous 2011 Vapor Intrusion Study Area)
11/12/13TCE Shallow Groundwater Results – Residential Area – South of 101– September 2013
Hide details for Records of DecisionRecords of Decision
06/24/05Final Record of Decision Site 27 Norther Channel
08/16/10Record of Decision Amendment for the Vapor Intrusion Pathway
Hide details for Technical DocumentsTechnical Documents
11/10/03Army's PRP Study Report - Orion Park Housing Area
03/01/05Final Environmental Issues Management Plan for NASA Research Park
03/11/05Air Sampling Report for Orion Park and Wescoat Housing Areas
09/12/07Groundwater Monitoring Well Installation and Sampling Report for Orion Park Housing Area
09/12/07Groundwater Monitoring Well Installation and Sampling Report for Orion Park Housing Area - Appendices
09/12/07Groundwater Monitoring Well Installation and Sampling Report for Orion Park Housing Area - Figures
06/15/092008 Annual Progress Report for WATS and EATS
06/29/09Final Supplemental Feasibility Study for the Vapor Intrusion Pathway
06/29/09Final Supplemental Remedial Investigation for the Vapor Intrusion Pathway
07/09/09Proposed Plan for the Vapor Intrusion Pathway (updated to fix Table 3 title to Future Buildings)
08/20/09EPA Potential Changes to Proposed Vapor Intrusion remedy - Aug 20, 2009
08/20/09Updated to reflect extended public comment period - Proposed Plan for the Vapor Intrusion Pathway
09/18/09Cover page of Proposed Plan updated to reflect public comment period extended to Nov 7, 2009 - Proposed Plan for Vapor Intrusion Pathway
09/30/09Final Second Five-Year Review for the MEW Superfund Study Area (including portions of NAS Moffett Field Superfund Site)
11/07/09Public Comments Received on EPA's Proposed Plan for the Vapor Intrusion Pathway during public comment period (July 10 - Nov 7, 2009)
02/12/10Navy Final Five-Year Review - Sites 1 & 22 Landfills and Sites 26 EATS Area and 28 WATS Area
02/12/10Navy Final Five-Year Review - Sites 1 & 22 Landfills and Sites 26 EATS Area and 28 WATS Area - Appendices
02/12/10Navy Final Five-Year Review - Sites 1 & 22 Landfills and Sites 26 EATS Area and 28 WATS Area - Figures
02/12/10Navy Responses to Agency Comments - Draft Five-Year Review Report - Oct 2009
06/15/102009 Annual Progress Report for MEW Regional Groundwater Remediation Program
06/30/102009 Annual Groundwater Report for WATS And EATS Area (excluding Appendix C)
07/07/10EPA Non-concurrence - Navy's Final Five-Year Review Report for Sites 1, 22, 26 and 28
07/20/10Navy Response to EPA July 7, 2010 letter on Navy's protectiveness statement for Site 28 WATS Area in Final Five-Year Review Report
11/05/10Final Work Plan - Supplemental Site Investigation Former Orion Park Housing Area
05/01/112010 Annual Progress Report for NASA Ames Research Center, Moffett Field, CA
06/15/112010 Annual Groundwater Report for Moffett Field Site 26 EATS Area and Site 28 WATS Area [excluding Appendix C]
06/15/112010 Annual Progress Report for MEW Regional Groundwater Remediation Program
09/12/11Building-Specific Air Sampling Report for Buildings 23, 48, 146, 503, 543, 554, 569, 583A, 583B, 583C, 596, and 944 on Moffett Field, CA
09/29/11Site-wide Vapor Intrusion Sampling and Analysis Work Plan for Response Action Tiering
12/06/11Draft Supplemental Site Investigation Report - Former Orion Park Housing Area, Moffett Field, California
03/26/12Final Technical Memorandum In Situ Anaerobic Biotic/Abiotic Treatability Study Installation Restoration Site 28 on Moffett Field (excluding Appendices F and H)
04/13/122011 Annual Groundwater Report for Moffett Field Site 26 EATS Area and Site 28 WATS Area (excluding Appendices C, D, E)
04/16/122011 Annual Vapor Intrusion Progress Report for MEW and Moffett Field Areas
05/17/12Navy's Air Sampling Work Plan for Vapor Intrusion Tier Response Evaluation at Moffett Field
06/27/12Final Work Plan Supplemental Investigation for Building 88 and Traffic Island Areas Installation Restoration Site 28 on Moffett Field
10/23/12Army's Final Supplemental Site Investigation Report - Former Orion Park Housing Area - submitted October 23, 2012 (excluding Appendices A through J, and Attachment 1)
10/23/12Army's Response to Comment Letter to Agencies Regarding Orion Park Supplement Site Investigation - Received by EPA 10/23/12
10/23/12Navy's Draft Air Sampling and Vapor Intrusion Tier Response Evaluation Report (including main text and Figure 3)
04/17/132012 Annual Groundwater Report for Installation Restoration Sites 26 and 28 (excluding Appendix C)
07/02/13Army’s Air Sampling Report –Buildings 546-MEPS, 593-Navy Lodge, and 685; Former Orion Park Housing Area
10/25/13Subsurface Investigation Report for Moffett Gateway/Former Vector Control Yard property – 750 Moffett Blvd, Mountain View, CA
12/01/13Draft Work Plan for the Northernmost A2/B1-Aquifer Plume Definition Assessment
04/15/142013 Annual Progress Report - NASA Ames Groundwater Treatment System

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Community Involvement

Public Meetings: EPA has awarded a Technical Assistance Grant (TAG) to the Pacific Studies Center. The TAG provides money for activities that help the community participate in decision making at the Moffett Field site. Please contact Lenny Siegel at 650-961-8928 or LSiegel@cpeo.org for more information.

A community advisory group, the MEW Community Advisory Board, meets to learn about and discuss MEW Superfund Study Area cleanup issues.

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Public Information Repositories

The public information repositories for the site are at the following locations:

Mountain View Public Library
585 Franklin Street
Mountain View, CA 94041
(650) 903-6880
Hours:
Monday-Thursday: 10 am to 9 pm
Friday and Saturday: 10 am to 6 pm
Sunday: 1 pm to 5 pm
650-903-6887

The most complete collection of documents is the official EPA site file, maintained at the following location:

Superfund Records Center

Mail Stop SFD-7C

95 Hawthorne Street, Room 403

San Francisco, CA 94105

(415) 820-4700

Enter main lobby of 75 Hawthorne street, go to 4th floor of South Wing Annex.

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Contacts

EPA Site Manager
Alana Lee
YvonneW Fong
415-972-3141
415-947-4117
Lee.Alana@epamail.epa.gov
Fong.YvonneW@epamail.epa.gov
US EPA Region 9
Mail Code SFD
75 Hawthorne Street
San Francisco, CA 94105
EPA Community Involvement Coordinator
Jackie Lane
415-972-3236
1-800-231-3075
Lane.Jackie@epamail.epa.gov
US EPA Region 9
Mail Code SFD
75 Hawthorne Street
San Francisco, CA 94105
EPA Public Information Center
415-947-8701
r9.info@epa.gov
State Contact
Elizabeth Wells
510-622-2440
EWells@waterboards.ca.gov
SF Bay - Regional Water Quality Control Board
1515 Clay Street, 14th Floor
Oakland, CA 94612
PRP Contact
Scott Anderson
619-532-0938
Scott.D.Anderson@navy.mil
Community Contact
Lenny Siegel
650-961-8918
LSiegel@cpeo.org
Center for Public Environmental Oversight,
a Project of the Pacific Studies Center,
278A Hope Street
Mountain View, CA 94041
Other Contacts
After Hours (Emergency Response)
US EPA
(800) 424-8802

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