Mouat Industries
NPL SiteColumbus, MT
According to the EPA Superfund Enterprise Management System, Mouat Industries in Columbus, MT is listed with NPL status NPL Site. Its Hazard Ranking System (HRS) score is 31.66. Specific contaminant records are not populated in the public extract for this site. EPA marks construction of the cleanup remedy as complete. NPL listing is a cleanup-authority designation, not a measured health-risk score.
Superfund National Priorities List inclusion (status and HRS score shown above) is the EPA's formal designation that a contaminated site qualifies for long-term federal cleanup authority under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). A federal-facility classification means the site is owned or operated by a federal agency, which routes cleanup responsibility differently than a privately owned site.
"Construction Complete" (status shown above) is an EPA milestone marking that the physical remedy work is finished, not that the site has exited EPA oversight; long-term monitoring can continue afterward. Deletion from the NPL is a separate, later step the EPA takes only once it determines every planned response action is finished.
NPL listing is a cleanup-authority designation in the EPA record, not a quantitative health-risk score. HRS scores of 28.50 or above qualify a site for the NPL under the EPA screening model (toxicity, pathways, waste quantity, and affected population factors). For current site conditions and official community notices, see the EPA Regional Superfund profile and the Montana environmental agency.
What is the cleanup status of this Superfund site?
Contaminants
Contaminant data is not available for this site. The EPA's contaminant records for Superfund sites are maintained in a separate database that may not include all sites.
Location
Other Superfund Sites in Montana
| Site Name | Status | HRS Score |
|---|---|---|
| ACM Smelter and Refinery | NPL Site | 54.26 |
| Anaconda Aluminum Co Columbia Falls Reduction Plant | NPL Site | 68.39 |
| Anaconda Co. Smelter | NPL Site | 58.71 |
| Barker Hughesville Mining District | NPL Site | 50.00 |
| Basin Mining Area | NPL Site | 61.15 |
| Billings PCE | NPL Site | 50.00 |
| Carpenter Snow Creek Mining District | NPL Site | 50.00 |
| East Helena Site | NPL Site | 61.65 |
| Flat Creek IMM | NPL Site | 51.33 |
| Idaho Pole Co. | NPL Site | 38.29 |
How does this site's HRS score compare in Montana?
Of the 19 Montana Superfund sites with a scored Hazard Ranking System (HRS) evaluation, Mouat Industries ranks #18 by score (31.66).
Either side of it: Libby Ground Water Contamination (37.67), Montana Pole and Treating (33.03), Libby Asbestos (0.00)
Frequently Asked Questions
What is the Mouat Industries Superfund site? ▼
What does NPL listing mean for Mouat Industries? ▼
What is the HRS score for Mouat Industries? ▼
What contaminants are at the Mouat Industries site? ▼
What is the cleanup status of Mouat Industries? ▼
NPL listing is a cleanup-authority designation in the EPA record, not a quantitative health-risk score. See Superfund Sites Explained for how the National Priorities List, Hazard Ranking System, and cleanup phases work.
Read our methodology - how this data is sourced, computed, and verified.