Travis Air Force Base

⚠ Superfund · Cleanup underway

The majority of soil site cleanups are complete, however additional soil and groundwater contamination was discovered at Site SD031 that requires additional investigation. Implementation, monitoring and optimization for the site’s final groundwater remedies are still ongoing.

Location

CityTravis Afb
CountySolano County
StateCalifornia
Coordinates38.26445, -121.93320

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 12/01/1986
  2. Proposed to the National Priorities List — 07/14/1989
  3. Finalized on the National Priorities List — 11/21/1989
  4. Remedial Investigation Started — 09/28/1990
  5. Remedy Selected — 12/03/1997
  6. Remedial Action Started — 01/31/1998
  7. Construction Completed — Not Yet Achieved
  8. Deleted from National Priorities List — Not Yet Achieved
  9. Most Recent Five-Year Review — 09/29/2023
  10. Achieved Sitewide Ready for Anticipated Reuse — Not Yet Achieved

EPA references

Other Superfund sites in Solano County

EPA-regulated facilities nearby

Understanding this Superfund site

Travis Air Force Base 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: Cleanup underway. Active cleanup is underway, meaning EPA has approved a remediation plan and work is in progress. Cleanup timelines vary widely — some sites take decades depending on contamination depth, groundwater involvement, and funding availability.

EPA has identified 10 contaminants of concern at this site, including 1,1,1-trichloroethane, 1,1,2-trichloroethane, 1,1-dichloroethene. Contamination has been detected in groundwater, free-phase napl, soil, surface water.

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.