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 SEMS Record of Decision
September 27, 2011
Disposal (offsite)
01 SEMS Record of Decision
May 16, 2014
Bottom Liner
Disposal (offsite)
Drainage/Erosion Control (other, NOS)
Free Product Recovery (active or passive, excluding MPE and bioslurping)
Institutional Controls
Monitoring (NAPL)
Solidification/Stabilization (exsitu, offsite)
01 SEMS Explanation of Significant Differences
September 20, 2016
Carbon Adsorption (liquid phase, P&T, exsitu)
Discharge (surface drain reinjection)
ESD/Amd - Remedy Element Addition/Modification
Repair (pipe/sewer/tank/structure repair)
01 SEMS Record of Decision
September 24, 2018
Data not available

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