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   Naval Air Station Fallon — Nevada
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Remediation Reports [1992 — 2012]

Meeting Minutes
Restoration Advisory Board

Remediation Sites

Site 1 - Crash Crew Training Area

Site 2 - New Fuel Farm

Site 3 - Hangar 1 Area
(formerly Hangar 300 Area)

Site 4 - Transportation Yard

Site 5 - Ordnance Area

Site 6 - Defuel Disposal Area

Site 7 - Napalm Burn Pit

Site 8 - Bore Site Gunbutt

Site 9 - Wastewater Treatment

Site 10 - GATAR Compound

Site 11 - Paint Shop

Site 12 - Pest Control Shop

Site 13 - Boiler Plant Tanks

Site 14 - Old Vehicle Maintenance

Site 15 - Old Navy Exchange Gas

Site 16 - Old Fuel Farm

Site 17 - Hangar 7

Site 18 - Southeast Runway Landfill

Site 19 - Post World War II Burial Site

Site 20 - Checkerboard Landfill

Site 21 - Receiver Site Landfill

Site 22 - Northeast Runway Landfill

Site 23 - Shipping & Disposal Receiving Area

Site 24 - Road Oiling Area

Site 25 - New Runway Rubble Disposal

Site 26 - Offsite Rubble Disposal Area

Site 27 - Diesel Fuel Spill Site

Site 28 - Northeast Runway Jet Fuel

Underground Storage Tanks

Remediation Site 1

Remediation Site 2

Remediation Site 3

Remediation Site 4

Remediation Site 5

Remediation Site 6

Background — NAS Fallon is located 7 miles southeast of Fallon, Nevada, the county seat of Churchill County. The main station comprises 8,583 acres and is located in the central part of the Carson Desert, commonly referred to as the Lahontan Valley. It includes airfield and maintenance facilities, public works and supply facilities, and housing.

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Naval Air Station (NAS) Fallon was originally established as a military facility in 1942, when the Civil Aviation Administration and Army Air Corps constructed four airfields in Nevada as part of the Western Defense Program.

In 1943, the Navy assumed control of the facility and on June 10, 1944, Naval Air Auxiliary Station (NAAS) Fallon was commissioned. The facility provided training, servicing, and support to air groups sent to the facility for combat training. In 1946, the facility was put into a "caretaker status" and the official designation of Naval Auxiliary Air Station removed. For the next five years, the Bureau of Indian Services used the facility.

The Korean conflict brought new life to the small desert installation. Once again, the Navy found reason to train pilots in the new sophisticated jet aircraft. In 1951, Fallon became an Auxiliary Landing Field for N.A.S. Alameda Calif. On Oct. 1, 1953, N.A.A.S. Fallon was reestablished by order of the Secretary of the Navy. The present day bombing ranges, Bravo 16, 17 and 19, were also created that year. From 1958 to 1972, the station was designated Van Voorhis Airfield in honor of a Medal of Honor recipient from Fallon. The station was expanded and upgraded in the early 1960s to prepare aircrews for Vietnam duty. On January 1, 1972, NAAS Fallon was upgraded to its current status of NAS Fallon.

Mission — NAS Fallon's mission is "To provide the most realistic integrated air warfare training support available to carrier air wings, tenant commands, and individual units participating in training events including joint and multinational exercises." NAS Fallon is home to the Naval Strike and Air Warfare Center, the Strike Fighter Wing Pacific Detachment, Navy Munitions Command-Fallon Detachment, Fleet Readiness Center West-Detachment Fallon, Fighter Composite Squadron 13 and Construction Battalion Maintenance Unit 303. As of 2010, the NAS Fallon base population is about 3,000 active duty personnel, civilian employees, and Department of Defense contractors.

Public Land Withdrawals — Public land withdrawals are parcels of federally administered land which have been withdrawn from public use and reserved for military activities. Over 127,000 acres of public land has been withdrawn to support military training at NAS Fallon. The withdrawn lands encompass the ranges which comprise the Fallon Range Training Complex. The Fallon Range Training Complex, located in the high desert of northern Nevada approximately 65 miles east of Reno, Nevada, is a set of well-defined geographic areas encompassing a land area and multiple air spaces. It is used primarily for training operations, with some capability to support research and development, and test and evaluation of military hardware, personnel, tactics, munitions, explosives, and electronic.

The geographic extent encompasses NAS Fallon and near-by range training areas, Bureau of Land Management (BLM) rights-of-way, and 13,000 square miles of Special Use Airspace. The Fallon Range Training Complex includes the Bravo-16, Bravo-17, Bravo-19, Bravo-20, Dixie Valley, and Shoal Site training areas.

Special Use Airspace — Special Use Airspace controlled by NAS Fallon includes nine restricted areas, seven military operations areas and five air traffic control assigned airspace areas. Restricted areas are located above and extend beyond the boundaries of the associated ranges or targets. Civilian air traffic is either prohibited or tightly controlled in Special Use Airspaces.

The restricted area over B-16, R-4803 South, includes approximately 113 square miles which overlie public land that is not withdrawn. R-4804, the restricted areas over B-17, includes approximately 87 square miles which overlie public land that in not withdrawn. The restricted area over B-19, R-4810, includes approximately 93 square miles which overlie public land that is not withdrawn. R-4813, one of the restricted areas over B-20, includes approximately 531 square miles which overlie public land that in not withdrawn. Restricted area R-4812, associated with both B-17 and B-19, includes approximately 175 squares miles which overlie public land that is not withdrawn.

Environmental Activities and Concerns — Groundwater underlying Naval Air Station (NAS) Fallon exists at a very shallow depth, and is generally considered nonpotable due to high concentrations of dissolved minerals. Shallow groundwater may discharge to drainage canals located at the boundaries of the base during periods when flow in the drainage canals is low. In turn, contaminated groundwater could impact the quality of surface water in the drainage canals which may adversely impact aquatic environments including the Stillwater National Wildlife Refuge. Consequently, groundwater contamination is a principal concern at NAS Fallon.

A Preliminary Assessment/Site Inspection (PA/SI) Report was completed for NAS Fallon in April 1988. This report identifies potential threats to human health or the environmental caused by past hazardous substance storage, handling, or disposal practices at NAS Fallon. A total of 27 sites were identified and assessed in the PA/SI Report. Based on data collected during the PA/SI, 21 of these sites presented a potential threat to human health or the environment and were recommended for a more detailed review. Many additional studies were performed to assess sites identified in the PA/SI Report. Additional sites have been added since the PA/SI was finalized, mainly as a result of contamination identified during underground storage tank removals. Six sites, identified as underground storage tank restoration sites, and one additional non-tank site, Site 28, were added to the investigatory program.

Outcomes from various investigations resulted in Decision Documents or letter recommendations for No Further Action at 17 sites. These sites have been closed by the Nevada Division of Environmental Protection. Additionally, three landfill sites have the findings of Long-Term Monitoring, recorded in Decision Documents signed by the State.

Additional Remedial Investigation work began in 2007 to address the remaining sites. The investigations, which included geophysical testing, soil gas surveys, soil sampling groundwater sampling, long-term monitoring, and other specialized testing, were completed in 2011. A series of Remedial Investigation Addendum/Feasibility Study Reports for three operable units, defined as petroleum sites, the northern operable unit, and the southern operable unit, will be finalized by the end of 2012. These reports define the limits of contamination at the remaining sites at NAS Fallon and propose options for remediation at each site. Current information about each active and closed site can be found in the Site Summaries.

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