Browse Environmental Hazards
346 toxic release records found.
| Facility | City | State | Chemical | Carcinogen | Total Releases (lbs) | Industry |
|---|---|---|---|---|---|---|
| MONTANA RESOURCES LLC | BUTTE | Montana | Copper And Copper Compounds | No | 16,852,661 | Metal Mining |
| MONTANA RESOURCES LLC | BUTTE | Montana | Manganese And Manganese Compounds | No | 10,822,952 | Metal Mining |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Barium And Barium Compounds | No | 7,303,440 | Electric Utilities |
| MONTANA RESOURCES LLC | BUTTE | Montana | Zinc compounds | No | 7,277,724 | Metal Mining |
| MONTANA RESOURCES LLC | BUTTE | Montana | Lead compounds | No | 3,943,594 | Metal Mining |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Manganese And Manganese Compounds | No | 1,187,870 | Electric Utilities |
| MONTANA RESOURCES LLC | BUTTE | Montana | Chromium | No | 376,482 | Metal Mining |
| MONTANA RESOURCES LLC | BUTTE | Montana | Cobalt compounds | No | 341,595 | Metal Mining |
| STILLWATER MINING CO EAST BOULDER MINE | BIG TIMBER | Montana | Nickel compounds | No | 284,640 | Metal Mining |
| MONTANA RESOURCES LLC | BUTTE | Montana | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | No | 283,167 | Metal Mining |
| BIG SKY SCIENTIFIC L.L.C. | SUN RIVER | Montana | Methanol | No | 282,773 | Miscellaneous Manufacturing |
| SMC NYE MINE SITE | NYE | Montana | Nickel compounds | No | 259,853 | Metal Mining |
| MONTANA RESOURCES LLC | BUTTE | Montana | Nickel And Nickel Compounds | No | 204,962 | Metal Mining |
| SMC NYE MINE SITE | NYE | Montana | Chromium compounds (except for chromite ore mined in the Transvaal Region) | No | 204,691 | Metal Mining |
| SMC NYE MINE SITE | NYE | Montana | Methanol | No | 186,668 | Metal Mining |
| COLSTRIP ENERGY LP ROSEBUD POWER PLANT | COLSTRIP | Montana | Barium And Barium Compounds | No | 133,454 | Electric Utilities |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Vanadium compounds | No | 115,494 | Electric Utilities |
| JUPITER SULPHUR LLC | BILLINGS | Montana | Ammonia | No | 111,282 | Chemicals |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Dichloromethane | No | 108,100 | Electric Utilities |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Copper And Copper Compounds | No | 95,102 | Electric Utilities |
| BARRICK GOLD CORP-GOLDEN SUNLIGHT MINE | WHITEHALL | Montana | Lead compounds | No | 66,752 | Other |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Lead And Lead Compounds | No | 64,813 | Electric Utilities |
| WEYERHAEUSER NR | COLUMBIA FALLS | Montana | Methanol | No | 63,503 | Wood Products |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | No | 62,035 | Electric Utilities |
| COLSTRIP ENERGY LP ROSEBUD POWER PLANT | COLSTRIP | Montana | Hydrogen fluoride | No | 61,330 | Electric Utilities |
| HARDIN GENERATING STATION | HARDIN | Montana | Barium And Barium Compounds | No | 60,317 | Electric Utilities |
| STILLWATER MINING CO EAST BOULDER MINE | BIG TIMBER | Montana | Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | No | 60,077 | Metal Mining |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | No | 58,000 | Electric Utilities |
| WESTERN SUGAR COOPERATIVE.130130 | BILLINGS | Montana | Ammonia | No | 54,790 | Food |
| WESTERN SUGAR COOPERATIVE.130130 | BILLINGS | Montana | Barium And Barium Compounds | No | 50,929 | Food |
| ROSEBURG FOREST PRODUCTS CO. - MISSOULA PARTICLEBOARD | MISSOULA | Montana | Formaldehyde | No | 50,197 | Wood Products |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Zinc compounds | No | 48,623 | Electric Utilities |
| CHS INC. LAUREL REFINERY | LAUREL | Montana | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | No | 45,828 | Petroleum |
| SMC NYE MINE SITE | NYE | Montana | Copper And Copper Compounds | No | 45,624 | Metal Mining |
| WEYERHAEUSER NR | COLUMBIA FALLS | Montana | Ammonia | No | 44,289 | Wood Products |
| GRAYMONT WESTERN US INC INDIAN CREEK LIME PRODUCTION | TOWNSEND | Montana | Lead And Lead Compounds | No | 42,000 | Other |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Nickel And Nickel Compounds | No | 41,543 | Electric Utilities |
| CALUMET MONTANA REFINING LLC. | GREAT FALLS | Montana | n-Hexane | No | 38,269 | Petroleum |
| CALUMET MONTANA REFINING LLC. | GREAT FALLS | Montana | Propylene | No | 36,652 | Petroleum |
| STILLWATER MINING CO EAST BOULDER MINE | BIG TIMBER | Montana | Methanol | No | 34,967 | Metal Mining |
| WEYERHAEUSER NR | COLUMBIA FALLS | Montana | Formaldehyde | No | 31,774 | Wood Products |
| MONTANA RESOURCES LLC | BUTTE | Montana | Cadmium compounds | No | 30,952 | Metal Mining |
| CHS INC. LAUREL REFINERY | LAUREL | Montana | Ammonia | No | 29,990 | Petroleum |
| COLSTRIP STEAM ELECTRIC STATION | COLSTRIP | Montana | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | No | 29,000 | Electric Utilities |
| ROSEBURG FOREST PRODUCTS CO. - MISSOULA PARTICLEBOARD | MISSOULA | Montana | Methanol | No | 28,955 | Wood Products |
| GCC-THREE FORKS LLC | THREE FORKS | Montana | Ammonia | No | 27,882 | Nonmetallic Mineral Product |
| PAR MONTANA BILLINGS REFINERY | BILLINGS | Montana | Ethylene glycol | No | 27,551 | Petroleum |
| DAVE GATES GENERATING STATION | ANACONDA | Montana | Ammonia | No | 26,879 | Electric Utilities |
| STILLWATER MINING CO EAST BOULDER MINE | BIG TIMBER | Montana | Copper And Copper Compounds | No | 26,710 | Metal Mining |
| PAR MONTANA BILLINGS REFINERY | BILLINGS | Montana | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | No | 26,000 | Petroleum |