Bldg. 96 Source Control GW Treatment System Begins Operating

February 2001

The Building 96 air stripping groundwater treatment system began operation in February 2001. The system consisted of three recirculation wells and one pumping well with air stripping and vapor-phase carbon treatment. The system was constructed to address volatile organic compound (VOC) contamination, primarily tetrachloroethylene (PCE). Historically a truck wash and vehicle maintenance facility during Camp Upton days, BNL used the facility as a drum storage area and scrap yard.

The groundwater treatment system was shutdown in June 2005 after BNL determined that it was no longer effectively reducing the levels of contamination. The system was placed in standby and attempts to oxidize the PCE trapped in the silt with injections of potassium permanganate in 2005 and 2006 were made. Following the injections, monitoring showed that PCE levels rebounded; BNL determined further characterization of the area was needed.

Detailed soil and vapor data defined an area approximately 25 feet by 25 feet by 15 feet deep just south of Building 96. The recommendation was made that the area be excavated and the soil be disposed of off-site in order to meet cleanup goals. This work was completed in November 2010. The treatment system has been turned back on and BNL expects to meet the 2030 cleanup goal of the Operable Unit III Record of Decision.

To learn more see the latest copy of BNL's Annual Groundwater Status Report