Superfund Information Systems: Site Profile

Superfund Site:

TAR CREEK (OTTAWA COUNTY)
OTTAWA COUNTY, OK

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 - OU00 No decision document
01 SITEWIDE - (OU1 - SURFACE/GROUND WATER) Record of Decision
June 06, 1984
Drainage/Erosion Control (other, NOS)
Monitoring
Other (NOS)
02 RESIDENTAIL SOIL (OU2) Record of Decision
August 27, 1997
Containment (other, NOS, onsite)
Cover (soil)
Excavation
Institutional Controls
Revegetation
02 RESIDENTAIL SOIL (OU2) Explanation of Significant Differences
August 30, 2007
ESD/Amd - Significant Cost Change
ESD/Amd - Significant Volume Change
03 TAR CREEK E-P LAB CHEM.(OU-03) No decision document
04 MINING WASTES (OU4 - NONRESIDENTIAL) Record of Decision
February 20, 2008
Cap (engineered cap)
Containment (other, NOS, onsite)
Cover (soil)
Excavation
Institutional Controls
Water Supply (temporary replacement, other, NOS)
05 TAR CREEK (OU5 - SEDIMENT) No decision document

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