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NPL Site Narrative for North Penn - Area 2

Hatfield, Pennsylvania

Federal Register Notice:  October 04, 1989

Conditions at proposal (January 22, 1987): The North Penn-Area 2 Site is in Hatfield, Montgomery County, Pennsylvania. The site was originally proposed under the name "Ametek, Inc. (Hunter Spring Division)."

The site has been renamed because the contamination may be caused by sources in addition to that identified in the original name. This site is one of six sites involving North Penn Water Authority (NPWA) wells that supply drinking water to people living northwest of Philadelphia. Six additional areas with contaminated ground water are under investigation.

Ametek, Inc.'s Hunter Spring Division manufactured precision springs, reels, and measuring and controlling apparatus on an 8-acre site in Hatfield. The facility used trichloroethylene (TCE) as a degreasing solvent. The facility ceased operation in 1986. The property has since been sold to Penn Color, Inc.

In March 1980, NPWA detected TCE and 1,1-dichloroethylene in on-site and downgradient wells. Background wells contained neither contaminant. An estimated 69,700 people obtain drinking water from public and private wells within 3 miles of the facility.

Status (October 4, 1989): Ametek took measures to clean up several areas of soil contamination at the site during the summer of 1987.

EPA is developing a workplan for a remedial investigation/feasibility study (RI/FS) to determine the type and extent of contamination in the area and identify alternatives for remedial action. As a detailed workplan is developed, the sources responsible for the contamination will be given an opportunity to conduct the RI/FS.

EPA is evaluating additional sources of contamination.

For more information about the hazardous substances identified in this narrative summary, including general information regarding the effects of exposure to these substances on human health, please see the Agency for Toxic Substances and Disease Registry (ATSDR) ToxFAQs. ATSDR ToxFAQs can be found on the Internet at ATSDR - ToxFAQs (http://www.atsdr.cdc.gov/toxfaqs/index.asp) or by telephone at 1-888-42-ATSDR or 1-888-422-8737.

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