Location and Description: The site was one of nine Atlas “E” missile sites operated by the Air Force under the 566th Strategic Missile Squadron at F.E. Warren Air Force Base, Wyoming. The site consisted of 265 acres acquired between July 1960 and May 1962. Improvements consisted of one underground launch operations building and one launch and service building, two water wells and pump stations, segregated storage buildings, sentry house, helicopter pad, spray pond, roads, walks, fences, water, sewer, and electrical systems. The site was excessed in 1965 and conveyed to private ownership by the General Services Administration. The site is currently owned and occupied by Mr. and Mrs. Stan Kolby. 

Problem and Response: Due to trichloroethene (TCE) groundwater contamination, a Hazardous, Toxic and Radioactive Waste project has been initiated under the Defense Environmental Restoration Program for FUDS. 

Interim Monitoring and Response: A U.S. Army Corps of Engineers contract was awarded in FY10 to conduct bi-annual interim monitoring under the remedial design phase. The monitoring of the groundwater was conducted over a three-year timeframe to assess plume migration. A proposed plan was submitted to close out the site. The decision document selected remedy is No Action and was signed on September 9, 2014 by the Omaha District Commander. 

Activities for 2015: Work will proceed with the abandonment of 10 monitoring wells. Effort will be conducted in conformance with USACE Engineer Manual and state of Wyoming regulations regarding well closure. 

Proposed Activities for 2016: A remedial action project should not be implemented with contaminants below maximum contaminant levels. 

Issues and Other Information: WDEQ is advocating for a remedial action of the TCE-contaminated groundwater. The biggest challenge will be to satisfy WDEQ and EPA concerns regarding the TCE-contaminated groundwater plume. WDEQ has indicated that surface and subsurface soil contamination, along with indoor air quality, are not significant concerns.

Location and Description: The site was one of nine Atlas “E” missile sites operated by the Air Force under the 566th Strategic Missile Squadron at F.E. Warren Air Force Base, Wyoming. The site consisted of 265 acres acquired between July 1960 and May 1962. Improvements consisted of one underground launch operations building and one launch and service building, two water wells and pump stations, segregated storage buildings, sentry house, helicopter pad, spray pond, roads, walks, fences, water, sewer, and electrical systems. The site was excessed in 1965 and conveyed to private ownership by the General Services Administration. The site is currently owned and occupied by Mr. and Mrs. Stan Kolby. 

Problem and Response: Due to trichloroethene (TCE) groundwater contamination, a Hazardous, Toxic and Radioactive Waste project has been initiated under the Defense Environmental Restoration Program for FUDS. 

Interim Monitoring and Response: A U.S. Army Corps of Engineers contract was awarded in FY10 to conduct bi-annual interim monitoring under the remedial design phase. The monitoring of the groundwater was conducted over a three-year timeframe to assess plume migration. A proposed plan was submitted to close out the site. The decision document selected remedy is No Action and was signed on September 9, 2014 by the Omaha District Commander. 

Activities for 2015: Work will proceed with the abandonment of 10 monitoring wells. Effort will be conducted in conformance with USACE Engineer Manual and state of Wyoming regulations regarding well closure. 

Proposed Activities for 2016: A remedial action project should not be implemented with contaminants below maximum contaminant levels. 

Issues and Other Information: WDEQ is advocating for a remedial action of the TCE-contaminated groundwater. The biggest challenge will be to satisfy WDEQ and EPA concerns regarding the TCE-contaminated groundwater plume. WDEQ has indicated that surface and subsurface soil contamination, along with indoor air quality, are not significant concerns.