An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Hazardous Waste Cleanup: Boeing - Philadelphia in Ridley, Pennsylvania

On this page:

In April 2004, EPA Region III and the Commonwealth of Pennsylvania Department of Environmental Protection (“PADEP”) entered into a One Cleanup Program Memorandum of Agreement (“MOA” or “Agreement”) to, among other things, facilitate PADEP’s implementation of Pennsylvania’s Voluntary Cleanup Program (“VCP”) under the authority of Act 2 and to promote the One Cleanup Program initiative by working together in a coordinated manner to avoid duplication of effort at properties subject to Resource Conservation and Recovery Act (RCRA) and to ensure the remediation of such properties in a timely fashion.

Cleanup Status

The remedial work was documented in Final Reports submitted on behalf of Boeing, dated July 13, 1998 (Center North Area Site), February 20, 2001 (73.5 Acre Site), April 14, 2003 (Center South Area Site), and November 10, 2004 (Old Landfill and Former Lagoon Area Site). These reports were submitted to PADEP for approval pursuant to Act 2. PADEP approved the Final Reports by letters dated October 9, 1998, March 12, 2001, July 22, 2003, and February 10, 2005, respectively.

In January 2006, EPA issued a statement of basis that proposed corrective actions complete with controls.


Top of Page

Site Description

Interactive Map of Boeing - Philadelphia, Ridley, Pennsylvania

View larger map

The main plant of the facility is located adjacent to Interstate 95 and Route 291 in Ridley Township, Delaware County, Pennsylvania. The location of the facility is shown in Attachment 1. The facility is bisected by Route 291, with approximately 240 acres located north of Route 291 and approximately 107 acres located south of Route 291. Crum Creek, Darby Creek, and the Delaware River are the major surface waters near the facility. Crum Creek and Darby Creek are receiving waters for the facility's National Pollution Discharge Elimination System ("NPDES") permitted outfalls. They are tributaries to the Delaware River, which borders the facility on the south. Local industrial groundwater users have been identified and are listed in the facility's Preparedness, Prevention, and Contingency Plan (1993). According to recent investigation reports, no private or public groundwater supplies or surface water intakes are known to exist in the vicinity of the facility.

Top of Page

Contaminants at this Facility

Contaminants of concern are benzo(a)pyrene, dibenzo(a,h)anthracene, arsenic, lead, TCE, naphthalene, benzo(b)fluoranthene, benzene, mercury, and chrysene.

Top of Page

Institutional and Engineering Controls at this Facility

    Institutional Controls are restrictions on groundwater use and the restrictions on the use of the property to non-residential use, and the maintenance of caps over contaminated areas. The controls are enforced via an environmental covenant.

    Top of Page

    Land Reuse Information at this Facility

     The facility is under continued use.

    Top of Page

    Site Responsibility at this Facility

    RCRA Corrective Action activities at this facility have been conducted under the direction of EPA Region 3.

    Top of Page