What is the Operable Unit III investigation?
Operable Unit III is the administrative name given to about 2,000 acres of Brookhaven National Laboratory’s (BNL) central and western area. This area was studied as part of BNL’s ongoing Superfund investigation. During the investigation, a portion of the groundwater in Operable Unit III was found to contain contaminants, including solvents and other chemicals. This body of contaminated groundwater, or plume, is flowing in a southerly direction on- and off-site. This summary sheet will explain what has been done to protect public health, how and where the contaminants are moving off-site, what those contaminants are, what actions are planned for the off-site portion of the plume, and what actions have been taken to remediate the on-site portion of the plume. What has been done to protect public health? A 1995 residential well sampling program in this area showed no contamination from BNL above drinking water standards (contamination thought to originate from a local business was found i
