San Gabriel Valley Area 3

⚠ Superfund · Listed on NPL

Since 2008, the City of Alhambra has operated a water treatment plant to remove VOCs and industrial solvents from the drinking supply. To identify the sources of groundwater contamination and determine cleanup actions, the State of California has investigated over 20 current and former industrial facilities.

Location

CityAlhambra
CountyLos Angeles County
StateCalifornia
Coordinates34.10000, -118.12500

Cleanup timeline

  1. Initial Assessment Completed — 09/01/1983
  2. Proposed to the National Priorities List — 09/08/1983
  3. Finalized on the National Priorities List — 05/08/1984
  4. Remedial Investigation Started — 07/12/1999
  5. Remedy Selected — Estimated Sep - Nov 2028
  6. Remedial Action Started — Not Yet Achieved
  7. Construction Completed — Not Yet Achieved
  8. Deleted from National Priorities List — Not Yet Achieved
  9. Most Recent Five-Year Review — Not Yet Achieved
  10. Achieved Sitewide Ready for Anticipated Reuse — Not Yet Achieved

EPA references

Other Superfund sites in Los Angeles County

EPA-regulated facilities nearby

Understanding this Superfund site

San Gabriel Valley Area 3 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: Listed on NPL. This site is on EPA's National Priorities List, which identifies the most serious uncontrolled or abandoned hazardous waste sites in the country. Listing triggers federal cleanup authority and funding under CERCLA (the Superfund law).

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.