Yuma Marine Corps Air Station

⚠ Superfund · Construction complete

Soil remediation activities are complete. Groundwater treatment systems have performed as designed. Both systems stopped operating during the rebound studies. The systems are now operating again.

Location

CityYuma
CountyYuma County
StateArizona
Coordinates32.65458, -114.58880

Contaminants of concern

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 07/01/1986
  2. Proposed to the National Priorities List — 06/24/1988
  3. Finalized on the National Priorities List — 02/21/1990
  4. Remedial Investigation Started — 09/30/1991
  5. Remedy Selected — 12/02/1997
  6. Remedial Action Started — 03/05/1999
  7. Final Remedial Action Started — 09/08/2000
  8. Construction Completed — 09/20/2000
  9. Deleted from National Priorities List — Not Yet Achieved
  10. Most Recent Five-Year Review — 09/21/2025

EPA references

EPA-regulated facilities nearby

Understanding this Superfund site

Yuma Marine Corps Air Station is a federal Superfund site in Arizona. 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: Construction complete. Physical construction of the cleanup remedy is complete, though long-term monitoring and institutional controls typically continue for years or decades. Groundwater treatment systems, for example, often run long after surface cleanup finishes.

EPA has identified 10 contaminants of concern at this site, including 1,1-dichloroethene, arsenic, cadmium. Contamination has been detected in groundwater, soil, solid waste.

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.