The AMP, Inc. Glen Rock Facility is a former industrial site in Glen Rock, Pennsylvania. Workers discovered contaminated drinking water there in 1984. Testing found total solvents, some suspected carcinogens, at levels far above federal drinking water standards. Three on-site wells were affected, and contamination also reached groundwater serving a nearby apartment complex. EPA added the site to the National Priorities List (NPL) in October 1989 after the agency and AMP, Inc. could not agree on how to proceed.
The main contaminants were solvents in groundwater. AMP, Inc. agreed to study the problem and design a remedy. In 1991, the company installed a bedrock flushing infiltration trench. The system uses six recovery wells and two air stripping towers to pull contaminated groundwater up, treat it, and keep it from spreading off-site. This work was conducted under the Resource Conservation and Recovery Act (RCRA) framework.
Construction was finished in December 1995. AMP, Inc. met all cleanup requirements by 1996, and EPA deleted the site from the NPL in October of that year. Human exposure is currently under control, with no unacceptable exposure pathways identified. Contaminated groundwater is stabilized, and there is no unacceptable discharge to surface water. EPA continues monitoring to confirm the affected groundwater stays within its original contamination area.
Physical cleanup construction is complete, but the site has not fully achieved all goals for current or future land uses, and some land-use restrictions may still be in place. Redevelopment is already occurring on parts of the site, and more may be possible. Community members with questions can contact the EPA staff assigned to the site, or visit the EPA Region 3 office at 1600 John F. Kennedy Boulevard in Philadelphia, Pennsylvania, by calling (215) 814-2396 to schedule an appointment.
