Chemical/Animal Holes GW Treatment System Begins Operating

February 2003

The Chemical/Animal Pits and Glass Holes were located in the south-central portion of the BNL property to the east of the Former Landfill. They were used for the disposal of a variety of laboratory chemicals and animal remains from 1960 to 1981. It was determined that the pits were a source of soil and groundwater contamination. Following excavation of the buried waste in 1997, a plume of contaminated groundwater containing the radioactive isotope strontium-90 (Sr-90) was characterized.

The Chemical/Animal Holes groundwater treatment system consists of three extraction wells that pump the groundwater into an ion exchange system that removes the Sr-90 from the groundwater. The clean water is then discharged into two dry wells.

The system began operating in February 2003. It is expected to operate until 2014 and after it is shut down, monitored natural attenuation and radioactive decay will be used to achieve drinking water standards by approximately 2045.

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