Abstract
Abstract : F. E. Warren Air Force Base (FEW) proposes to repair and replace the Crow Creek Lift Station in Building 510. The purpose of this action is to prevent the wastewater spill that is likely to occur because the Lift Station is ageing and likely to fail in the foreseeable future. Building 510, the lift station, built in 1951, is the sole wastewater lift station supporting F. E. Warren AFB (FEW) and is showing signs of foundation de-lamination. The wet well portion of the lift station where sewage collects prior to being pumped up to the main sewer distribution line is old and corroded from sewage gases. The lift station is approximately 164 feet from the centerline of Crow Creek (90 CES GeoBase Viewer, 2007). The proposed action is approximately 15 feet outside the 1 00-year floodplain. Failure of the lift station will result in a wastewater spill in close proximity to Crow Creek, and will produce a drastic reduction in the use of water and elimination of wastewater from the living and working environments on FEW. The lift station needs to be replaced to ensure that wastewater from FEW continues to be safely and efficiently moved to the City of Cheyenne sanitary sewer system. The lift station is approximately 432 square feet and contains two pumps, various valves, and electrical equipment necessary to pump wastewater from a lower to higher elevation gravity mains and ultimately to the City of Cheyenne Board of Public Utilities (BOPU) wastewater treatment plant. The lift station pumps the collected wastewater through a force main that crosses the Burlington Northern Santa Fe Railroad.
Published Version
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