Begin Main Content Area

Bishop Tube

This page was last updated on October 27, 2021

Site Facts

Location: Malin Road, south of U.S. Route 30, East Whiteland Township, Chester County
HSCA Site Since: 1999
Primary Contaminant of Concern: Trichloroethene (TCE) its breakdown products, and heavy metals, among other contaminants of concern, have been detected in soil, surface water, groundwater and indoor air at the Site
Historical Use: Stainless steel tubes were manufactured from the 1950’s until 1999
Previous Property Owners and Operators: Johnson Matthey Inc. (previously known as J. Bishop, Matthey Bishop) , Whittaker Corporation, Christiana Metals Corporation, Alloy Steel Corporation, Marcegaglia USA, Central & Western Chester County Industrial Development Authority
Current Property Owner: Constitution Drive Partners L.P. (CDP)
Listing: On September 11, 2010 DEP facilitated the future Remedial Response action(s) as defined in HSCA by placing the Site to Pennsylvania’s Priority List of Hazardous Sites for Remedial Response (“PAPL”)

Remedial Response Action

  • DEP under the authority of the Hazardous Sites Cleanup Act (“HSCA”) (35 P.S. §§ 6020.102-6020.1303), is proposing a remedial response action at the Site to address soil, groundwater, surface water, and a residential drinking water supply that have been contaminated by chlorinated solvents and/or inorganic contaminants of concern (“COCs”).
  • The Site consists of areas of groundwater, soil, and surface water contamination. Groundwater contamination at the Site affects properties located along South Malin Road, Lancaster Avenue (US Rt. 30), Conestoga Road (PA Rt. 401), Morehall Road (PA Rt. 29), and Village Way. The sources of the contaminated groundwater and surface water and areas of contaminated soil are located on the 13.7-acre former Bishop Tube property (“Source Property”), currently owned by CDP.
  • TCE is considered the primary Site-related COC because its concentrations within soil, groundwater, and surface water are generally higher than other chlorinated solvents. Additionally, TCE has migrated further in groundwater than the other COCs released at the Site. Since a public water supply is available within the entire Site boundary, vapor intrusion (“VI”) is anticipated to be the most significant exposure pathway. DEP is proposing to divide the Site into three operable units (“OUs”) and to remediate the Site to a combination of Act 2 standards, including background, Statewide health, and site-specific.
  • DEP’s proposed remedy includes In Situ Chemical Oxidation and/or In Situ Chemical Reduction (“ISCO/ISCR”), coupled with soil mixing to address unsaturated and saturated soils impacted by Site COCs; in situ injection of ISCO, ISCR or bioremediation amendments in the two primary chlorinated solvent source areas to address contaminated groundwater with engineering, and/or institutional controls, and long-term monitoring; and connection of the residence with an impacted domestic well to the existing public water line.
  • In combination, implementation of these proposed alternatives would protect public health and the environment and address potential exposure pathways by using engineering controls and institutional controls, connecting a home with a private well to the public waterline, reducing COC migration across the source property boundary, reducing migration and diffuse discharge of COCs to Little Valley Creek, and hastening retraction of the groundwater contaminant plume by reducing source concentrations of COCs in soil and groundwater.
  • If selected, implementation of these alternatives would be designed and implemented in a complimentary manner to avoid potential negative interactions, comport with the protections afforded under Article 1, Section 27 of the Pennsylvania Constitution, comply with Applicable, or Relevant and Appropriate Requirements (“ARARs”), and avoid negative impacts to Little Valley Creek. The total estimated present value cost of the proposed final remedial response action is $8.1M.

Administrative Record/Public Comment

  • The administrative record which contains the information that forms the basis and documents the selection of the proposed response action is available for public review and comment.
  • DEP has extended the time period for review of the Administrative Record and submission of public comment from January 3, 2022 until January 31, 2022.
    • Bishop Tube Administrative Record (PDF)
      *Hard copies of the Administrative Record are also available for review in DEP’s Southeast Regional Office and the East Whiteland Township Municipal Building. Due to various limitations, such as size and reproducibility, as noted on the docket, a few records will be available only electronically.

Written Comments

  • Written comments can be submitted by sending them by mail to Dustin A. Armstrong, Environmental Protection Specialist at the Pennsylvania Department of Environmental Protection, 2 East Main Street, Norristown, PA 19401 or by email to Please include “Bishop Tube Public Comment” in the subject of the email.

Oral Comments

  • A Virtual Public Hearing is scheduled for Tuesday, November 9, 2021, beginning at 6:30 PM.
  • Individuals who wish to present testimony at the virtual hearing must contact a minimum of 24 hours in advance of the hearing to reserve a time to present testimony; a link will be provided upon registration.
  • For those wishing only to listen to the hearing, access information will be posted to the Virtual Public Hearing web page.
  • DEP is extending verbal testimony time allotments from 3 minutes to 5 minutes per commenter. Video demonstrations and screen sharing by witnesses will not be permitted. DEP asks that each organization designate one speaker per group and reminds those presenting that time may not be shared or relinquished to others.
  • All comments, whether delivered orally during the virtual hearing or submitted in writing carry equal weight and consideration with DEP.

What's Next (As of September 24, 2021)

  • After the closing of the public comment period on January 31, 2022, DEP will respond to public comments and file its final statement of decision of its selected response action for the Site in accordance with HSCA.

Agency for Toxic Substances and Disease Registry (ATSDR) Evaluations

April 6, 2016: ATSDR letter (PDF)
July 16, 2008: ATSDR Evaluation (PDF)

East Whiteland Twp

  • East Whiteland Township has been awarded a Technical Evaluation Grant (TEG) pursuant HSCA. The TEG provides up to $50,000 for conducting an independent technical evaluation of a proposed remedial response at a HSCA site.
  • East Whiteland Township maintains a website for this Site: Bishop Tube Land Development | East Whiteland Township, PA

Community Updates

To subscribe to updates, please send an email to: Please indicate in the subject line or text of the email that you’d like to receive updates related to the Bishop Tube HSCA Site.

Contacting DEP

To schedule an appointment to review files associated with the Bishop Tube site and project, please call the Norristown Office at 484-250-5910.
Please direct correspondence or inquiries to one of the following:

  • Project Information: Dustin Armstrong, Project Officer at
  • Community and Media Relations: Virginia Nurk, Community Relations Coordinator at
  • Legal: Adam Bram, Supervisory Counsel at
  • Legislative Inquiries: Rob Fogel, Local Government Liaison at