PART I: Bioventing Pilot Test Work Plan Former Diesel UST Areas Installation Restoration Program, Sites 35a & 35c, March AFB, California. PART II: Draft Bioventing Pilot Test Interim Results Report Former Diesel UST Area Installation Restoration Program, Site 35c, March AFB, California

摘要

Part I: This Pilot Test Work Plan presents the scope of two in situ bioventing pilot tests for the treatment of fuel-contaminated soils at two former diesel underground storage tank (UST) areas at Installation Restoration Program (IRP) Sites 35a and 35c, March Air Force Base (AFB), California (Figure 1.1). March AFE is located in Riverside County, approximately ten miles east of Riverside and sixty miles east of Los Angeles. Bioventing pilot tests have three primary objectives: (1) to assess the potential for supplying oxygen throughout the contaminated soil interval, (2) to determine the rate at which indigenous microorganisms will degrade fuel in the soil when stimulated by oxygen-rich soil gas, and (3) to evaluate the potential for sustaining these rates of biodegradation until fuel contamination is remediated to concentrations below regulatory standards. Part II: The purpose of this Part II report is to describe the results of the initial pilot test at IRP Site 35c and to make specific recommendations for extended testing which will determine the long-term impact of bioventing on site contamination. A description of the site history and contaminants detected during previous investigations is described in Part I, the Bioventing Pilot Test Work Plan.