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AMP, Inc (Glen Rock Facility)

EPA Region 3 (Mid-Atlantic)

York County
Susquehanna Road in Glen Rock

EPA ID# PAD041421223

19th Congressional District

Last Update: January 2015
No future updates

Other Names


Current Site Status

The U.S. Environmental Protection Agency oversaw the cleanup of the AMP, Inc. site which was completed in 1996, allowing the site to be deleted from the National Priorities List of most hazardous waste sites in the country. The site's pump and treat system to clean contaminated groundwater will operate for several more years.

Site Description

The AMP, Inc. Glen Rock facility is a 20-acre site located in a rural area outside of Glen Rock, Pennsylvania. The facility is the plastics division of AMP, Inc., which manufactures injection-molded plastics and polyester. The materials development lab uses contact adhesives and lubricants. The facility has a permit for managing hazardous wastes. In 1984, employees' complaints about the taste of their water led to testing. Total solvents, some of which are suspect carcinogens were found at many times the federal drinking water standards. Three wells located on the site were tested, and the owners were notified of the contamination. Well water serving an apartment complex also was tested, and the owner was notified of possible exposure to contaminants in the groundwater. Approximately 4,700 people live within a three-mile radius of the site. A trailer park and apartment complex are nearby. Larkin Pond, a wetland located next to the site, is used for recreational activities and drains into a tributary of Seaks Run.
Site Responsibility
This site was the responsibility of Federal and State governments, the site owner and parties potentially responsible for site contamination.
NPL Listing History
Our country's most serious, uncontrolled, or abandoned hazardous waste sites can be cleaned using federal money. To be eligible for federal cleanup money, a site must be put on the National Priorities List. This site was proposed to the list on June 24, 1988 and formally added to the list October 4, 1989. It was deleted from the NPL on October 2, 1996.

Threats and Contaminants

Analysis of the groundwater, soil, and surface water from 1984 through 1990 revealed contamination with trichloroethane and trichloroethylene from manufacturing wastes. People who accidentally ingest or come into direct contact with contaminated ground water, soil, or surface water may be at risk. The site is adjacent to a wetland, which could be subject to contamination from runoff from the site. Larkin Pond, located next to the site, also is a potential threat to people who use the pond for recreational purposes.

Contaminant descriptions and risk factors are available from the Agency for Toxic Substances and Disease Registry, an arm of the CDC.

Cleanup Progress

Construction was completed in 1991, and the pump and treat system has been fully operational and consistent with EPA’s requirements since September 1991.

AMP’s Glenrock Facility is an operating facility that normally would be regulated by EPA and the PADEP’s hazardous waste permitting program. EPA was unable to come to agreement with AMP, Inc. and subsequently, the AMP Site was placed on the National Priorities List (NPL). After the site was placed on the NPL, AMP agreed to perform the needed work under existing authorities.

AMP agreed to a consent order to complete a study of the nature and extent of contamination at the site and to recommend a remedy for site cleanup. The site was investigated, a study of viable cleanup options was completed and a remedy recommended by AMP, Inc. The EPA agreed to the cleanup remedy and AMP, Inc. installed a bedrock flushing infiltration trench in 1991. This currently operational treatment system flushes contaminants through the bedrock and into the groundwater pumping wells and air stripping towers. AMP, Inc. currently is pumping and treating contaminated ground water by utilizing six recovery wells and two air stripping towers to prevent the contaminants from migrating off site.

The monitoring wells are analyzed quarterly. Initial results have indicated the system is working; contaminant concentrations have decreased significantly since the start-up of the system. A third air stripping tower installed in 1987 is used to treat water as a backup drinking water source for the neighboring trailer park. The tower is located off site in the trailer park. This system has made substantial progress towards meeting the performance standards.


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