Superfund Site: POHATCONG VALLEY GROUND WATER CONTAMINATION
WARREN COUNTY, NJ
Superfund Site Profile
To View the Record of Decision - OU3: click here
The Pohatcong Valley Groundwater Contamination Superfund Site (Site) is located in parts of Washington Borough, Washington Township, Franklin Township and Greenwich Township in Warren County, New Jersey. The Site involves primarily tetrachloroethylene (TCE) and perchloroethylene (PCE) contamination of the Kittatinny Limestone Aquifer underlying the Pohatcong Valley. The aquifer serves as the sole source of drinking water for public water systems and private parties in the area. The Site is approximately 10 miles long and approximately 1.5 miles wide and is defined by the extent of two plumes of groundwater contamination, one that is contaminated primarily TCE (“TCE plume”) and another that is contaminated primarily with PCE (“PCE plume”), that join into a combined plume. EPA separated the Site into three operable units (“OUs”). OU1 addresses contaminated groundwater within Washington Borough and parts of Washington and Franklin Townships; OU2 addresses groundwater contamination downgradient of OU1 within portions of Franklin and Greenwich Townships; and OU3 addresses contaminated soil source areas within the OU1 area. After immediate actions to protect human health and the environment, the site’s long-term cleanup is ongoing.