Superfund Information Systems: Site Profile

Superfund Site:

COMMODORE SEMICONDUCTOR GROUP
LOWER PROVIDENCE TOWNSHIP, PA

Operable Units

Below, EPA has provided a list of the remedial actions selected pertaining to each operable unit.

EPA issues Records of Decision (RODs) to explain which cleanup methods will be used at Superfund National Priorities List sites. EPA has two primary documents that it may use to identify changes to the remedies selected in RODs. EPA uses a ROD Amendment when it needs to make a fundamental change to the remedy. EPA publishes an Explanation of Significant Differences (ESD) for significant changes.

During cleanup, complex sites may be divided into several distinct areas to make the response more efficient. These areas, called operable units (OUs), may address geographic areas, specific problems, or medium (e.g., groundwater, soil) where a specific action is required. The remedies are displayed for the OU numbers indicated in the original decision document. OU numbers may change over time.

EPA is working to improve data quality. The information presented on this page is undergoing review for accuracy and completeness, and may be subject to change.

OU ID Name Decision Document Cleanup Technologies Selected
in the Decision Document
00 SITEWIDE Not applicable
01 WATER LINE EXTENSION No decision document
02 GROUNDWATER EXTRACTION TREAT. Record of Decision
September 29, 1992
Air Stripping (P&T, exsitu)
Carbon Adsorption (liquid phase, P&T, exsitu)
Discharge (surface water/NPDES discharge)
Institutional Controls
02 GROUNDWATER EXTRACTION TREAT. Explanation of Significant Differences
May 03, 1993
ESD - Nonfundamental Change (other)
02 GROUNDWATER EXTRACTION TREAT. Explanation of Significant Differences
September 28, 2004
Institutional Controls
Monitoring
02 GROUNDWATER EXTRACTION TREAT. Explanation of Significant Differences
September 06, 2006
ESD/Amd - Cleanup/Performance Standard Change
02 GROUNDWATER EXTRACTION TREAT. Explanation of Significant Differences
September 28, 2011
Institutional Controls

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