Mouat Industries

⚠ Superfund · Ready for anticipated reuse

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Location

CityColumbus
CountyStillwater County
StateMontana
Coordinates45.63361, -109.24568

Contaminated media

Cleanup timeline

  1. Initial Assessment Completed — 09/01/1979
  2. Proposed to the National Priorities List — 10/15/1984
  3. Finalized on the National Priorities List — 06/10/1986
  4. Remedial Investigation Started — 09/25/2025
  5. Remedy Selected — Not Yet Achieved
  6. Remedial Action Started — Not Yet Achieved
  7. Construction Completed — 09/27/1996
  8. Deleted from National Priorities List — Not Yet Achieved
  9. Most Recent Five-Year Review — 08/23/2023
  10. Achieved Sitewide Ready for Anticipated Reuse — 06/21/2006

EPA references

EPA-regulated facilities nearby

Understanding this Superfund site

Mouat Industries is a federal Superfund site in Montana. 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.

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.