Superfund Information Systems: Site Profile

Superfund Site:

ROCKY FLATS PLANT (USDOE)
GOLDEN, CO

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 CENTRAL OU Record of Decision
September 29, 1994
No Action
01 CENTRAL OU Record of Decision
September 13, 1995
No Action
01 CENTRAL OU Record of Decision
September 29, 1995
No Action
01 CENTRAL OU Record of Decision
March 12, 1997
Containment (other, NOS, onsite)
Excavation
Extraction (recovery/vertical well)
Ion Exchange (P&T, exsitu)
Thermal Treatment (insitu)
Treatment (other, NOS, exsitu, onsite)
01 CENTRAL OU Record of Decision
September 29, 2006
Institutional Controls
Monitoring
No Action
Operations & Maintenance (O&M)
01 CENTRAL OU Record of Decision Amendment
September 19, 2011
Institutional Controls
02 PERIPHERAL No decision document
03 OFFSITE AREAS Record of Decision
June 03, 1997
No Action
04 SOLAR PONDS No decision document

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