Boundary Area Hydraulic Containment System (BAHCS)

The BAHCS was installed at the northern base boundary to intersect the Main TCE Plume as it migrates off base.  It was installed in 1996 as part of a treatability study by the Air Force and was operated to reduce the amount of contaminated groundwater migrating beyond the base boundary.  The system consisted of seven groundwater capture wells, an air stripper for primary treatment of groundwater, and GAC to treat vapor from the air stripper.  After the groundwater was treated, it was reinjected into the alluvial water bearing zone.  The system was decommissioned in April 2005.  The system was no longer providing effective capture and treatment of the Main TCE plume at the base boundary.