Superfund Information Systems: Site Profile

Superfund Site:


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.

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 No decision document
01 NEW WELL Record of Decision
March 22, 1985
Other (NOS)
02 OFFSITE (SAN JOSE 6 (SJ6)) Record of Decision
September 30, 1988
Institutional Controls
03 EDMUNDS GROUNDWATER Record of Decision
June 28, 1988
Treatment (other, NOS, exsitu, onsite)
03 EDMUNDS GROUNDWATER Explanation of Significant Differences
September 26, 2006
Data not available
04 EDMUNDS SOURCE Record of Decision
March 30, 1989
No Further Action
05 USAF GE SOURCE CONTROL Record of Decision
September 30, 1988
Air Stripping (P&T, exsitu)
Carbon Adsorption (liquid phase, P&T, exsitu)
Extraction (recovery/vertical well)
Soil Vapor Extraction (insitu)
05 USAF GE SOURCE CONTROL Explanation of Significant Differences
October 16, 2006
Data not available
06 DEEP ZONE GROUNDWATER No decision document

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