Superfund Information Systems: Site Profile

Superfund Site:

WESTINGHOUSE ELECTRIC CORP. (SUNNYVALE PLANT)
SUNNYVALE, CA

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 OVERALL SITE Record of Decision
October 16, 1991
Air Stripping (P&T, exsitu)
Cap (engineered cap)
Carbon Adsorption (liquid phase, P&T, exsitu)
Discharge (surface water/NPDES discharge)
Excavation
Extraction (recovery/vertical well)
Filtration (P&T, exsitu)
Incineration (offsite)
Institutional Controls
Monitoring
Residuals Treatment/Disposal (offsite)
Ultraviolet (UV) Oxidation (P&T, exsitu)
01 OVERALL SITE Explanation of Significant Differences
March 14, 1997
Disposal (offsite)
Excavation
01 OVERALL SITE Explanation of Significant Differences
September 30, 2008
Institutional Controls

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