EPA Air · by county
Air-emissions sources in Natrona County, Wyoming
- 54Facilities
Every stationary source in Natrona County, Wyoming that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
By emissions classification in Natrona County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Natrona County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2025 — inspections 7
- 2023 — inspections 4
- 2022 — inspections 4
- 2021 — inspections 5
- 2020 — inspections 5
- 2019 — inspections 4
- 2018 — inspections 4
- 2017 — inspections 5
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| AIRPORT (NATRONA COUNTY INTERNATIONAL AIRPORT) | Synthetic minor source | No |
| AMOCO PIPELINE CO. - CASPER STATION | Minor source | No |
| AMOCO PIPELINE CO. SALT CREEK STATION | Minor source | No |
| ARMINTO PLANT (OWNER: TOLSA WYOMING BENTONITE CORPORATION) | Minor source | No |
| ASBESTOS TECHNOLOGY, INC. | Minor source | No |
| BLACK BEAR OIL-EAST SALT CREEK COMP STAN | Minor source | No |
| BLIZZARD TOWING | Minor source | No |
| BUCKNUM BENTONITE PLANT (TOLSA WYOMING BENTONITE CORP.) | Minor source | No |
| CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | Major source | No |
| CASPER CRUDE TO RAIL (CASPER CRUDE TO RAIL, LLC) | Synthetic minor source | No |
| CASPER GAS PLANT (TALLGRASS MIDSTREAM, LLC) | Minor source | No |
| CASPER PLANT (BLACK HILLS BENTONITE) | Synthetic minor source | No |
| CASPER PUMP STATION (PHILLIPS 66 PARTNERS HOLDINGS LLC) | Synthetic minor source | No |
| CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) | Major source | Yes |
| CASPER SOLID WASTE MANAGEMENT FACILITY (CITY OF CASPER SOLID WASTE DIVISION) | Minor source | No |
| CASPER STATION (PLATTE PIPE LINE COMPANY LLC) | Synthetic minor source | No |
| CHEMICAL MARKETING SERVICES-CASPER PLANT | Minor source | No |
| CONOCO (CT-777) | Minor source | No |
| EIGHTY-EIGHT OIL - CT-829 | Minor source | No |
| EMPIRE SAND (CT-304) | Minor source | No |
| EMULSIFIED ASPHALT (CT-884) | Minor source | No |
| EMULSIFIED CT-514A | Minor source | No |
| EMULSIFIED CT-807 | Minor source | No |
| FROST CONST (CT-499) | Minor source | No |
| GRIEVE PIPELINE CO SOUTH CASPER CREEK | Minor source | No |
| HIGH PLAINS CONSTRUCTION_(RE-23) | Minor source | No |
| HOSPITAL WASTE INCINERATOR (BANNER HEALTH) | Minor source | Yes |
| JTL GROUP-MADSEN PLANT | Minor source | No |
| KINDER MORGAN - BOONE DOME | Minor source | No |
| KNIFE RIVER PORTABLE CRUSHING & SCREENIN | Minor source | No |
| MCMURRY (CT-521) | Minor source | No |
| MERCURY EXPLORATION-WEST POISON SPIDER | Minor source | No |
| MILLS COMPLEX (BLACK HILLS BENTONITE LLC) | Major source | No |
| NAVAL PETROLEUM RESERVE NO. 3 (NATRONA COUNTY HOLDINGS LLC) | Minor source | No |
| PACIFIC HIDE & FUR | Minor source | No |
| PLATTE PIPE LNE-CASPER TANK FARM | Minor source | No |
| RISSLER-MCMRY CT-376 | Minor source | No |
| RISSLER-MCMRY CT-592 | Minor source | No |
| RISSLER-MCMURRY (CT-539) | Minor source | No |
| RISSLER-MCMURRY (RE-17) | Minor source | No |
| ROCKY MNT PIPE - NORTH SAGE CREEK BASIN | Minor source | No |
| ROCKY MOUNTAIN PLS_MEDICINE BOW STATION | Minor source | No |
| SAFARILAND LLC CASPER FACILITIES | Minor source | No |
| SALT CREEK GAS PLANT (FDL OPERATING, LLC) | Minor source | No |
| SCHERER BROS CT-634 | Minor source | No |
| SCHERER BROTHERS CONSTRUCTION | Minor source | No |
| SHEET METAL SPECIALTIES | Minor source | No |
| SINCLAIR TRANS CO_CASPER STATION | Minor source | No |
| SOUTH CASPER CREEK - STEAM GEN. PLANT | Minor source | No |
| SUNRIDGE II APARTMENTS | Minor source | No |
| T CROSS T RANCH LLC:CT-823 PORT CRUSHER | Minor source | No |
| WALTMAN 16 (HILCORP ENERGY COMPANY) | Synthetic minor source | No |
| WALTMAN 44 COMPRESSION FACILITY (HILCORP ENERGY COMPANY) | Minor source | No |
| WESTINGHOUSE ELECT | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.