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EPA Project Manager
Office of Pennsylvania Remediation - 3LC30
U.S. EPA Region III
1650 Arch Street
Philadelphia, PA 19103-2029
PA Dept of Environmental Protection
Lauren Mapleton, Geologic Specialist
Southeast Regional Office
2 East Main Street
Norristown, PA 19401
An Environmental Indicator (EI) inspection was conducted in 2011 to determine whether human exposures to contamination and the migration of contaminated groundwater are under control. Based on this inspection and additional investigations conducted at the facility through 2015, EPA determined that the facility met the human exposures EI in September 2015; the groundwater EI remains indeterminate until further investigations can better define the fate and transport of groundwater contamination or contaminant plume migration is controlled.
After a July 2013 EPA evaluation of off-site groundwater wells near the facility showed contamination of chlorinated volatile organic compounds and 1,4-dioxane in one non-operational well in the mobile home park immediately south of the facility, phased site-wide investigations of the facility were undertaken to determine the source, nature, and extent of contamination. Each phase of the investigation builds upon previous phases and is reviewed by EPA and PADEP and modified as necessary. Once an adequate conceptual site model can be developed based on results of the phased investigations, they will serve as the basis of a comprehensive remedial investigation of the facility.
PennEngineering has owned and operated the Facility since 1950, when it purchased the 120-acre property which was farmland at that time. The developed portion of the property only utilizes 13 acres. From 1950 through 2000, the Facility operated as Penn Engineering and Manufacturing Corporation, changing its name to PennEngineering in 2000.
PennEngineering is an active manufacturer of self-cinching fasteners for a variety of industries, including electronics, computers, data/telecommunications, medical, automotive, marine, and aircraft. Manufacturing operations include machining operations, passivation of stainless steel, and heat treatment of parts.
On March 31, 2014, the facility entered into EPA’s One Cleanup Program which provides Pennsylvania facilities with corrective action obligations under RCRA to complete federal corrective action and, concurrently, receive a liability release from Pennsylvania under Pennsylvania’s Land Recycling Program.
Primary contaminants at the facility include 1,1,1-trichloroethane and its degradation products (1,1-dichloroethane, 1,1-dichloroethene, and vinyl chloride), and 1,4-dioxane. Groundwater and, to a lesser extent, soil have been impacted by the contaminants. Potential exposure to this contamination could occur via ingestion since groundwater is used as a potable water source in the vicinity of the facility; however, sampling of all known wells in the vicinity of the facility showed contamination above Maximum Contaminant Levels in only one well, which is non-operational and will not be used for potable purposes. No other potential routes of exposure to contamination from the facility are expected to be significant.
It is likely that an institutional control prohibiting groundwater use beneath the facility will be required as part of the final remedy.
- Environmental Indicator Determination - Human Exposures [PDF, 7 pages, 399 KB, AboutPDF]
- Documents and reports regarding this facility also can be reviewed in person at these locations:
U.S. EPA Region III
Land & Chemicals Division
1650 Arch Street-11th Floor
Philadelphia, PA 19103
Call for an appointment.
- Submit a FOIA Request
Get instructions on how to submit a FOIA request. Additional fee for requests over 100 pages.
Some of the site’s key documents of interest are accessible below:
|Penn Engineering||Penn Engineering Site Map||Penn Engineering Site Layout|
Click on a thumbnail to enlarge the photo)
The site is under continued use.
For more information about EPA's corrective action webpage, including Environmental Indicators, please visit our site at: www.epa.gov/reg3wcmd/correctiveaction.htm