Superfund Information Systems: Site Profile

Superfund Site:

WESTLAKE LANDFILL
BRIDGETON, MO

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 SITE EVALUATION/DISPOSITION No decision document
01 RAD WASTE CELLS Record of Decision
May 29, 2008
Cap (engineered cap)
Consolidate (onsite)
Drainage/Erosion Control (other, NOS)
Excavation
Institutional Controls
Monitoring
Monitoring (landfill gas)
Slope Stabilization
02 LANDFILL Record of Decision
July 25, 2008
Cap (engineered cap)
Drainage/Erosion Control (other, NOS)
Gas Pressure Controls
Institutional Controls
Monitoring
Monitoring (landfill gas)
03 GROUNDWATER No decision document

Top of Page