North Penn Area 5
EPA ID: PAD980692693
Colmar, PA 18915
Congressional District: 13th
Other Names: American Electronics Laboratories
Last Updated: February 2014
Remedial Project Manager
Sharon Fang, OU1 & OU2
Chris Sklaney, OU3
Community Involvement Coordinator
The EPA is dedicated to providing you with timely and accurate information about our work at this site. If you have any questions or concerns, please contact:Vance Evans
On This Page
- The Site has three operable units (OUs) which represent separate areas of groundwater contamination: OU1, OU2, and the OU3.
OU1; Plume in the vicinity of the former BAE Facility:
For OU1, EPA agreed that BAE Systems Information and Electronic Systems Integration, Inc. (BAE) could better define the extent of contaminated groundwater and document the findings in a Pre-Design Investigation (PDI) Report. In addition to these investigations, BAE conducted a pilot test to evaluate the possible use of soil vapor extraction (SVE) and/or dual-phase extraction, which combines SVE and groundwater extraction and treatment technologies.
The PDI Report was submitted to EPA in January 2009 and contained an evaluation of chemical, physical and biological treatment alternatives. EPA is currently evaluating the results and plans to complete a Focused Feasibility Report (FFS) and issue a Proposed Plan for public comment.
OU2; Plume in the vicinity of the former Stabilus Facility:
- EPA issued a Record of Decision (ROD) for interim action on September 7, 2011.
- EPA received extensive comments on the 2008 Proposed Plan for interim action. Response to the substantive comments are included in the 2011 ROD as the Responsive Summary. EPA issued an order requiring the PRPs to perform the Remedial Design/Remedial according to the 2011 ROD. The PRPS are currently designing the cleanup.
OU3; Plume in the vicinity of Advanced Lane:
- Design and implementation of the remedy continues. In October 2011, EPA began a pilot study to test the effectiveness of selected remedy, enhanced in-situ chemical oxidation, at treating contaminated groundwater. The pilot study included a pre-injection sampling round, injection of a chemical oxidation (potassium permanganate) into one well, interim water-quality monitoring of nearby monitoring wells and, a post-injection sampling round. The in-site chemical oxdiation pilot study was completed in 2013. Additional remedial design work will begin in Spring 2014.
- The North Penn Area 5 Superfund Site (Site) is located in the vicinity of Colmar and Hatfield Township, Pennsylvania in the eastern part of Montgomery County, with a portion of the Site extending into Bucks County. The Site encompasses an approximately five square-mile area generally bounded by Richardson Road to the southeast, Bethlehem Pike (Route 309) to the west, Trewigtown Road to the northwest and Schoolhouse Road to the east (Figure 1).
- North Penn Area 5 is one of several sites within the North Penn area of Pennsylvania that is suspected of contaminating groundwater and drinking water. The Site has three separate areas of groundwater contamination, designated by Operable Units (OUs).
- OU1 A company previously known as American Electronics Laboratories, Inc. manufactured electronic communication systems and components on the site.
- OU2 Another facility in the area is Stabilus Inc. which manufactured gas springs used in the automobile industry and other mechanical equipment.
- OU3 In the Advance Lane area, a number of smaller facilities are located and associated with a variety of products and services.
NPL Listing History
|Status: Final||Added: 1989|
- OU1 In 1981, the State ordered American Electronic Laboratories, Inc. (AEL) to remove 125 cubic yards of contaminated soil and transport them to an EPA-approved hazardous waste facility. The soil contamination was located in the area of an underground storage tank on the property. In 1981, the company began treating contaminated groundwater by pumping on-site monitoring wells and sending the water to a nearby sewage treatment plant. In early 1986, AEL installed a unit that uses air stripping to remove VOCs from the groundwater. In 2010, BAE ceased treating contaminated groundwater.
- EPA did a preliminary study of the nature and extent of contamination at the Site (prior to splitting into operable units) and based on this information, did an in-depth study of the groundwater, surface water and soil in 1997.
- As a Remedial Investigation (RI), EPA installed over 30 monitoring wells, conducted a well inventory for the area, sampled and analyzed water from all the new and existing residential and commercial wells in the vicinity of the site, and shared these results with individual property owners.
- The feasibility study (FS) evaluated groundwater remediation strategies to treat and restore the contaminated groundwater plume and the RI/FS reports are available on the Agency web site.
- A Sitewide Proposed Plan was issued in 2002. Extensive comments were received and additional field activities were conducted in 2002 through 2003 to fill data gaps identified in the original RI data. The Site was split into three seperate areas of ground water contamination and a Record of Decision was issued in 2004 for OU1 and OU3.
- OU2 A Proposed Plan for OU2 was issued in 2008. Extensive comments were received and were included in the Responsiveness Summary section of the Record of Decision for Interim Action. The ROD for OU2 was signed September 7, 2011 and construction of the interim remedy.
- The groundwater contains various VOCs including trichloroethene (TCE) and its breakdown products which are chemical components of solvents and degreasers.
- Some elevated levels of inorganics and PAHs in soils and sediments on the site were also detected.
- A full list of contaminant descriptions and associated risk factors can be found at: (ATSDR web site).
- To search an on-line database of all documents and reports on the North Penn Area 5 site,
go to EPA’s Administrative Record Database.
- All documents and reports can also be reviewed in person at these locations:
Lansdale Public Libray
301 Vine Street
Lansdale, PA 19446
Montgomery Township Municipal Building
1001 Stump Road
Montgomeryville, PA 18936-9605
U.S. EPA Region III
1650 Arch Street-6th Floor
Philadelphia, PA 19103
Call for an appointment.
- Some of the site’s key documents of interest are accessible below.
2002 Proposed Plan (PDF) (54 pp, 2.29MB)
2004 Record of Decision (ROD) for OU1 and OU3 (PDF) (185 pp, 8.13MB)
2008 Proposed Remedial Action Plan (PRAP) for OU2 (PDF) (32 pp, 794k)
2011 Record of Decision (ROD) for Interim Action for OU2 (PDF) (186 pp, 12.4MB)
2014 Proposed Plan Admendment (PDF) (45 pp, 3.73 MB)
- Submit a FOIA Request
Get instructions on how to submit a FOIA request. Fee for requests over 100 pages.
Figure 1 - General Site Location Map (PDF) (1p, 356k)
Monitoring Well Location Map (PDF) (1p, 557k)
- Site Progress Profile — a quick reference sheet, linking to EPA's Headquarters.
- Fact Sheets
September 2008 (PDF) (4 pp, 92.2K)
- Press Releases
07/06/2004: EPA Selects Remedy for North Penn Site
06/25/1998: North Penn Area 5 Not Endangering Children at Whistlestop Park.
- No reuse plans at this time.
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