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. 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 GROUNDWATER & PHYTO REMED Record of Decision
November 18, 1998
Aeration (exsitu)
Air Stripping (P&T, exsitu)
Extraction (recovery/vertical well)
Institutional Controls
Other (NOS)
Phytoremediation (for treatment insitu)
Precipitation (P&T, exsitu)
Treatment (other, NOS, exsitu, onsite)
Water Supply (point-of-use/point-of-entry treatment)
01 GROUNDWATER & PHYTO REMED Explanation of Significant Differences
April 15, 2009
ESD - Nonfundamental Change (other)
01 GROUNDWATER & PHYTO REMED Explanation of Significant Differences
September 27, 2018
ESD/Amd - COC(s) Change
ESD/Amd - Cleanup/Performance Standard Change
02 DRUM EXCAV & CONTAMINATED SOIL No decision document
03 VAPOR INTRUSION (SOURCE AREA) No decision document

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