Browse Environmental Hazards
407 toxic release records found.
| Facility | City | State | Chemical | Carcinogen | Total Releases (lbs) | Industry |
|---|---|---|---|---|---|---|
| KNIFE RIVER CHEYENNE | CHEYENNE | Wyoming | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | No | 100 | Petroleum |
| WYOMING REFINING CO | NEWCASTLE | Wyoming | Naphthalene | No | 97 | Petroleum |
| BASIN ELECTRIC LARAMIE RIVER STATION | WHEATLAND | Wyoming | 1,2,4-Trimethylbenzene | No | 97 | Electric Utilities |
| CHEYENNE RENEWABLE DIESEL CO LLC | CHEYENNE | Wyoming | Toluene | No | 96 | Chemicals |
| PETE LIEN & SONS INC. - JONATHON LIME PLANT | LARAMIE | Wyoming | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | No | 87 | Nonmetallic Mineral Product |
| HF SINCLAIR CASPER REFINING LLC | CASPER | Wyoming | Lead And Lead Compounds | No | 82 | Petroleum |
| CROWN BEVERAGE PACKAGING | WORLAND | Wyoming | Manganese compounds | No | 79 | Fabricated Metals |
| WYOMING REFINING CO | NEWCASTLE | Wyoming | Ethylene | No | 73 | Petroleum |
| BUCKING HORSE PLANT | DOUGLAS | Wyoming | Ethylbenzene | No | 68 | Natural Gas Processing |
| MOUNTAIN CEMENT CO | LARAMIE | Wyoming | Nickel compounds | No | 67 | Nonmetallic Mineral Product |
| DYNO NOBEL INC-CHEYENNE PLANT | CHEYENNE | Wyoming | Naphthalene | No | 64 | Chemicals |
| BASIN ELECTRIC DRY FORK STATION | GILLETTE | Wyoming | Mercury And Mercury Compounds | No | 59 | Electric Utilities |
| KNIFE RIVER MATERIALS YARD | CASPER | Wyoming | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | No | 58 | Nonmetallic Mineral Product |
| MOUNTAIN CEMENT CO | LARAMIE | Wyoming | Lead compounds | No | 51 | Nonmetallic Mineral Product |
| HF SINCLAIR CASPER REFINING LLC | CASPER | Wyoming | 1,2,4-Trimethylbenzene | No | 49 | Petroleum |
| CHEYENNE RENEWABLE DIESEL CO LLC | CHEYENNE | Wyoming | Ethylbenzene | No | 47 | Chemicals |
| HF SINCLAIR PARCO REFINING LLC | SINCLAIR | Wyoming | Cresol (mixed isomers) | No | 47 | Petroleum |
| HF SINCLAIR PARCO REFINING LLC | SINCLAIR | Wyoming | Mercury And Mercury Compounds | No | 46 | Petroleum |
| HF SINCLAIR CASPER REFINING LLC | CASPER | Wyoming | Phenanthrene | No | 43 | Petroleum |
| CHEYENNE RENEWABLE DIESEL CO LLC | CHEYENNE | Wyoming | Benzene | No | 41 | Chemicals |
| MOUNTAIN CEMENT CO | LARAMIE | Wyoming | Vanadium compounds | No | 36 | Nonmetallic Mineral Product |
| HF SINCLAIR CASPER REFINING LLC | CASPER | Wyoming | Naphthalene | No | 35 | Petroleum |
| HF SINCLAIR CASPER REFINING LLC | CASPER | Wyoming | Cyclohexane | No | 35 | Petroleum |
| PACIFICORP NAUGHTON PLANT | KEMMERER | Wyoming | Mercury And Mercury Compounds | No | 34 | Electric Utilities |
| CHEYENNE RENEWABLE DIESEL CO LLC | CHEYENNE | Wyoming | Cyclohexane | No | 30 | Chemicals |
| WYOMING REFINING CO | NEWCASTLE | Wyoming | Styrene | No | 30 | Petroleum |
| MOUNTAIN CEMENT CO | LARAMIE | Wyoming | Mercury compounds | No | 23 | Nonmetallic Mineral Product |
| KNIFE RIVER CASPER | CASPER | Wyoming | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | No | 22 | Petroleum |
| PACIFICORP JIM BRIDGER PLANT & BRIDGER COAL CO | POINT OF ROCKS | Wyoming | Naphthalene | No | 22 | Electric Utilities |
| SILVER EAGLE REFINING-EVANSTON | EVANSTON | Wyoming | Hydrogen sulfide | No | 22 | Petroleum |
| HF SINCLAIR PARCO REFINING LLC | SINCLAIR | Wyoming | 1,3-Butadiene | No | 21 | Petroleum |
| CHEYENNE RENEWABLE DIESEL CO LLC | CHEYENNE | Wyoming | Cumene | No | 19 | Chemicals |
| U.S. DOD USAF WYOMING ANG | CHEYENNE | Wyoming | Naphthalene | No | 17 | Other |
| VOESTALPINE RAILWAY SYSTEMS NORTRAK INC. | CHEYENNE | Wyoming | Manganese | No | 16 | Fabricated Metals |
| GEORGIA-PACIFIC GYPSUM LLC - LOVELL PLANT | LOVELL | Wyoming | Lead And Lead Compounds | No | 13 | Nonmetallic Mineral Product |
| CHAMPIONX-EVANSVILLE PLANT 108 | EVANSVILLE | Wyoming | Ethylene glycol | No | 12 | Miscellaneous Manufacturing |
| CHEYENNE RENEWABLE DIESEL CO LLC | CHEYENNE | Wyoming | Biphenyl | No | 10 | Chemicals |
| BASIN ELECTRIC LARAMIE RIVER STATION | WHEATLAND | Wyoming | Dioxin and dioxin-like compounds | No | 9 | Electric Utilities |
| PACIFICORP DAVE JOHNSTON PLANT | GLENROCK | Wyoming | Naphthalene | No | 9 | Electric Utilities |
| HF SINCLAIR CASPER REFINING LLC | CASPER | Wyoming | Mercury And Mercury Compounds | No | 8 | Petroleum |
| SILVER EAGLE REFINING-EVANSTON | EVANSTON | Wyoming | Cumene | No | 8 | Petroleum |
| BUCKSKIN MINING CO GILLETTE WY | GILLETTE | Wyoming | Lead | No | 8 | Coal Mining |
| CHEYENNE RENEWABLE DIESEL CO LLC | CHEYENNE | Wyoming | Propylene | No | 6 | Chemicals |
| NELSON BROTHERS MINING SERVICES LLC | GILLETTE | Wyoming | Ammonia | No | 6 | Chemicals |
| HF SINCLAIR PARCO REFINING LLC | SINCLAIR | Wyoming | Benzo[g,h,i]perylene | No | 6 | Petroleum |
| HF SINCLAIR PARCO REFINING LLC | SINCLAIR | Wyoming | Molybdenum trioxide | No | 5 | Petroleum |
| PECAN PIPELINE (WYOMING) JEWELL GAS PLANT | DOUGLAS | Wyoming | Ethylene glycol | No | 5 | Natural Gas Processing |
| EXCAL INC. | MILLS | Wyoming | Lead | No | 5 | Primary Metals |
| EXCAL INC. | MILLS | Wyoming | Nickel | No | 5 | Primary Metals |
| EXCAL INC. | MILLS | Wyoming | Zinc (fume or dust) | No | 5 | Primary Metals |