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Record of Decision System (RODS)

F.E. WARREN AIR FORCE BASE

Abstract

Site Name:  F.E. WARREN AIR FORCE BASE
Address:  I-25 AND RANDALL AVENUE
90TH SUPPORT GROUP/DEV BLD 320 
City & State:  CHEYENNE  WY  82005
County:  LARAMIE
 
EPA ID:  WY5571924179
EPA Region:  08
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R08-95/113
ROD Date:  08/09/1995
Operable Unit(s):  01
 
Media:  soil
 
Contaminant:  Motor gasoline (MOGAS), hydraulic fluid, motor oil, battery acid, trichloroethene (TCE), chloroform, organic contaminants, oil, waste antifreeze, chromium, arsenic, total petroleum hydrocarbons (TPHs)
 
Abstract:  Please note that the text in this document summarizes the Record of Decision for the purposes of facilitating searching and retrieving key text on the ROD. It is not the officially approved abstract drafted by the EPA Regional offices. Once EPA Headquarters receives the official abstract, this text will be replaced.

F.E. Warren Air Force Base (Base), occupies approximately 5,866 acres immediately adjacent to the west side of the City of Cheyenne, Wyoming. The Base is bordered by agricultural land and rural or suburban residential areas. The Base contains 831 residential housing units and several unaccompanied personnel housing units, along with the services required by residents.

The Base was placed on the National Priorities List (NPL) on February 21, 1990. Historically, the Base has served a number of military functions, including: cavalry outpost, quartermaster depot and intercontinental ballistic missile operations base. Operations began at the U.S. Army outpost named Fort D.A. Russell in 1867. The name was changed to Fort F.E. Warren in 1930. The Base was a major training facility during World War II (WWII). F.E. Warren was transferred to the newly formed U.S. Air Force in 1947. The Base underwent extensive renovation after WWII. The majority of the Army training facilities were torn down and not replaced. Construction since that time has centered on facilities for Air Force operations. Beginning in 1958, F.E. Warren Air Force Base became a Strategic Air Command (SAC) base. Since then, the Base has served as an operations center for, first, the Atlas Intercontinental Ballistic Missile (ICBM), followed by the Minuteman I and III and finally, the Peacekeeper (MX) ICBMs. The Base was part of Air Combat Command from 1992 to 1993, and in July 1993, became part of Space Command.

Operable Unit 1 (OU1) consists of seven separate sites (SS 1-7) located in the central and southern parts of the base. Operable Unit 1 is the third of ten operable units for which RODs will be prepared. These sites consist of areas where hazardous materials have been spilled or disposed of. These sites include underground storage tanks (USTs), material storage areas, oil/water separators, and a battery acid disposal site.

All of the spill sites contain one or more of the following contaminants: motor gasoline (MOGAS), hydraulic fluid, motor oil, battery acid, trichloroethene (TCE), chloroform, organic contaminants, oil, waste antifreeze, chromium, arsenic, and total petroleum hydrocarbons (TPHs).

The OU1 Baseline Risk Assessment (BRA) demonstrated no significant risk to human health or environment from the contaminants found at the soils of this operable unit.
 
Remedy:  The selected remedy for OU1 is that no remedial action is required for the soils at the spill sites. Any groundwater contamination at the spill sites will be investigated in OU2.
 
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