Westinghouse Electric Corp Sunnyvale Plant

⚠ Superfund · Ready for anticipated reuse

The removal of contaminated soil and a gasoline tank, and the operation of the groundwater treatment system reduced the potential for exposure to contaminated materials at the site.

Location

CitySunnyvale
CountySanta Clara County
StateCalifornia
Coordinates37.37870, -122.02250

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 07/01/1984
  2. Proposed to the National Priorities List — 10/15/1984
  3. Finalized on the National Priorities List — 06/10/1986
  4. Remedial Investigation Started — 10/01/1981
  5. Final Remedy Selected — 10/16/1991
  6. Remedial Action Started — 06/28/1994
  7. Final Remedial Action Started — 03/19/1997
  8. Construction Completed — 09/27/2000
  9. Deleted from National Priorities List — Not Yet Achieved
  10. Most Recent Five-Year Review — 09/23/2021

EPA references

Other Superfund sites in Santa Clara County

EPA-regulated facilities nearby

Understanding this Superfund site

Westinghouse Electric Corp Sunnyvale Plant is a federal Superfund site in California. The Superfund program, created by Congress in 1980, addresses sites where hazardous substances have been released or threaten release into the environment. EPA scores potential sites using the Hazard Ranking System; those that score high enough are placed on the National Priorities List.

Current status: Ready for anticipated reuse. EPA considers this site ready for anticipated reuse, meaning cleanup has progressed enough for certain land uses. This does not necessarily mean all contamination has been removed — institutional controls like deed restrictions may limit how the land can be used.

EPA has identified 10 contaminants of concern at this site, including 1,1,1-trichloroethane, 1,1-dichloroethane, 1,1-dichloroethene. Contamination has been detected in groundwater, soil.

If you live near this site and have health concerns, your state health department can provide site-specific guidance. EPA maintains a community involvement program for most NPL sites, and site documents — including the Record of Decision, five-year reviews, and public health assessments — are typically available through EPA's Superfund site profile.