Bioventing at Operable Units 5, 8, 9, 10, and 11

摘要

The objective of this report is to present operations data and an evaluation of bioventing system performance, including site status, problems identified, and recommendations. Operations guidance, summarized in Figure 1-1, facilitates identification of required system changes during normal operations and when remediation is nearing completion. A pilot-scale treatability study at the Base Exchange Service Station (BXSS) indicated that bioventing was a viable remedial technology (Earth Tech 1995) for petroleum-contaminated soils at Loring AFB. The BXSS treatability study report presented preliminary information and established basic design parameters. Based on the BXSS treatability study, bioventing was selected as the preferred removal action treatment technology at 16 sites in 5 operable units (OUs) at Loring AFB. Bioventing systems were installed and started at four sites in the fall of 1995:.