Casmalia Resources

⚠ Superfund · Remedy selected

Phased remedial design and remedial action are currently in progress. Construction is underway at various areas of the site.

Location

CityCasmalia
CountySanta Barbara County
StateCalifornia
Coordinates34.86312, -120.54430

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 04/01/1980
  2. Proposed to the National Priorities List — 06/14/2001
  3. Finalized on the National Priorities List — 09/13/2001
  4. Remedial Investigation Started — 06/27/1997
  5. Final Remedy Selected — 06/28/2018
  6. Final Remedial Action Started — 04/02/2020
  7. Construction Completed — Not Yet Achieved
  8. Deleted from National Priorities List — Not Yet Achieved
  9. Most Recent Five-Year Review — 09/22/2025
  10. Achieved Sitewide Ready for Anticipated Reuse — Not Yet Achieved

EPA references

EPA-regulated facilities nearby

Understanding this Superfund site

Casmalia Resources 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: Remedy selected. EPA has selected a cleanup remedy but construction has not yet begun. The remedy selection process involves a feasibility study, public comment period, and a Record of Decision documenting the chosen approach.

EPA has identified 10 contaminants of concern at this site, including (z)-1,3-dichloro-1-propene, 1,1,1-trichloroethane, 1,1,2,2-tetrachloroethane. Contamination has been detected in groundwater, soil gas, soil, liquid waste, sediment.

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.