Superfund Information Systems: Site Profile

Superfund Site:

COMMODORE SEMICONDUCTOR GROUP
LOWER PROVIDENCE TOWNSHIP, PA

Cleanup Progress

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Cleaning up Superfund sites is a complex, multi-phase process. Learn more:

Site Milestones

Milestone Date(s)
Initial Assessment Completed 12/05/1986
Proposed to the National Priorities List 01/22/1987
Finalized on the National Priorities List 10/04/1989
Remedial Investigation Started 07/29/1988
Final Remedy Selected 09/29/1992
Remedial Action Started 11/18/1994
Final Remedial Action Started 09/09/1999
Construction Completed 08/24/2000
Deleted from National Priorities List Not Yet Achieved
Most Recent Five-Year Review 06/16/2020
Site Ready for Reuse and Redevelopment 06/26/2006

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Cleanup Schedule by Operable Unit

During cleanup, a site can be divided into a number of distinct areas depending on its complexity. These areas, called operable units (OUs), may address geographic areas, specific problems, or areas where a specific action is required. Examples of typical operable units include construction of a groundwater pump and treatment system or construction of a cap over a landfill.

Milestone OU Start Date Completion Date OU ID
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 07/29/1988 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 11/08/1994 00
Administrative Order of Consent (EPA Performed) OU 00 - SITEWIDE 09/30/2002 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 06/29/1993 00
Unilateral Administrative Order (EPA Performed) OU 00 - SITEWIDE 03/08/2000 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 08/24/2005 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 09/29/2010 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 08/28/2015 00
Five-Year Review (EPA Performed) OU 00 - SITEWIDE 06/16/2020 00
Combined Remedial Investigation/Feasibility Study (PRP Performed, EPA Oversight) OU 01 - WATER LINE EXTENSION 07/29/1988 09/29/1992 01
Remedial Design (PRP Performed, EPA Oversight) OU 01 - WATER LINE EXTENSION 10/01/1993 11/18/1994 01
Remedial Action (PRP Performed, EPA Oversight) OU 01 - WATER LINE EXTENSION 11/18/1994 06/19/1998 01
Record of Decision (EPA Performed) OU 02 - GROUNDWATER EXTRACTION TREAT. 09/29/1992 02
Explanation of Significant Differences (EPA Performed) OU 02 - GROUNDWATER EXTRACTION TREAT. 05/03/1993 02
Explanation of Significant Differences (EPA Performed) OU 02 - GROUNDWATER EXTRACTION TREAT. 09/28/2004 02
Explanation of Significant Differences (EPA Performed) OU 02 - GROUNDWATER EXTRACTION TREAT. 09/06/2006 02
Explanation of Significant Differences (EPA Performed) OU 02 - GROUNDWATER EXTRACTION TREAT. 09/28/2011 02
Remedial Design (PRP Performed, EPA Oversight) OU 02 - GROUNDWATER EXTRACTION TREAT. 10/01/1993 09/09/1999 02
Remedial Action (PRP Performed, EPA Oversight) OU 02 - GROUNDWATER EXTRACTION TREAT. 09/09/1999 12/20/2000 02
Long-Term Response Action (PRP Performed, EPA Oversight) OU 02 - GROUNDWATER EXTRACTION TREAT. 12/20/2000 02

NOTE: Dates and estimated dates will not display for all milestones. Estimated dates only display for milestones planned within the next three fiscal years. Estimated dates and start dates will not display for the following enforcement milestones: Administrative Order of Consent, Consent Decree and Unilateral Administrative Order. Start dates will not display for the following document milestones: Five-Year Review, Record of Decision, Record of Decision Amendment, Explanation of Significant Differences and Partial NPL Deletion.

DISCLAIMER: The data on this page are derived from the Superfund Enterprise Management System and are solely for informational purposes. The data cannot be relied upon to create any substantive or procedural rights or requirements enforceable by any party in litigation with any member of the public, states, tribes, the United States or any federal agency. EPA reserves the right to change these data at any time without public notice.

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