Download or read book Installation Restoration Program (IRP) McClellan Air Force Base: Operable Unit B Action Memorandum written by and published by . This book was released on 1991 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this action memorandum is to document approval of a ground water removal action in Operable Unit (OU) B of McClellan Air Force Base (AFB), California. The removal action abates the impacts of contaminated ground water in specific areas of OU B. Operable Unit B is the southwestern portion of McClellan AFB, and extends off-base. The impact to public health and environmental impact caused by contaminants in OU B, including soil, soil gas, and other areas of ground water contamination, will be addressed in the OU B remedial Investigation/Feasibility Study. Investigations of the ground water found contamination migration toward two water supply wells. Three contaminant plumes have been identified, based on composition of contaminants and historical ground water flow direction. The contaminants in the ground water are mostly volatile organic compounds that were used in industrial processes at McClellan AFB. The sources of the contaminant plumes are currently unknown. Ground water contamination is primarily the result of waste disposal practices. Contamination of soils has been confirmed at six sites and three study areas in OU B.