Spray Aeration System to Treat HWMF Groundwater


BNL's first groundwater treatment system operated from 1985 to 1990 to address contamination from the former Hazardous Waste Management Facility (HWMF) which was BNL's central Resource Conservation and Recovery Act (RCRA) Receiving Facility for processing, neutralizing, and storing hazardous and radioactive wastes for off-site disposal until 1997.

The "Aquifer Restoration Project" was established under the Safety & Environmental Protection Division after the solvent trichloroethane (TCA) was detected in the groundwater near the HWMF in 1984. BNL hired a consulting firm to characterize the extent of the contamination. The TCA plume had traveled about 2,000 feet to the southeast, but had not affected the Laboratory's drinking water supply wells or reached the site boundary. An air stripping treatment system was installed to stop its progression.

Following additional investigations and characterizations some years later additional groundwater treatment systems were constructed to cleanup the contamination not addressed by the original system. An on-site system (the OU I South Boundary Treatment System) began operation in December 1996 and an off-site system (North Street East System) began operation in June 2004.