EPA Air · by county
Air-emissions sources in Laramie County, Wyoming
- 42Facilities
Every stationary source in Laramie 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 Laramie 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 Laramie 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.
- 2026 — inspections 4
- 2024 — inspections 5
- 2023 — inspections 3
- 2022 — inspections 4
- 2020 — inspections 4
- 2018 — inspections 3
- 2017 — inspections 4
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| ASPHALT CEMENT UNLOADING FACILITY (WESTERN STATES ASPHALT LLC) | Minor source | No |
| BIG HORN CAL CT-799 | Minor source | No |
| CHEYENNE CABINET MANUFACTURING (SCHROLL CABINETS, INC.) | Synthetic minor source | No |
| CHEYENNE PLANT (DYNO NOBEL INC) | Major source | Yes |
| CHEYENNE PRAIRIE GENERATING STATION (CHEYENNE LIGHT FUEL & POWER) | Major source | No |
| CHEYENNE RECYCLING-REC CENTER | Minor source | No |
| CHEYENNE RENEWABLE DIESEL COMPANY (CHEYENNE RENEWABLE DIESEL COMPANY LLC) | Synthetic minor source | No |
| CHEYENNE SANITARY LANDFILL #1 (CITY OF CHEYENNE) | Minor source | No |
| CHEYENNE TERMINAL/PIPELINE STATION (MAGELLAN PIPELINE COMPANY, LP) | Minor source | No |
| CHEYENNE VA MEDICAL CENTER | Minor source | No |
| CROELL REDI-MIX INC. CHEYENNE PLANT | Minor source | No |
| EAGLE WRECKING COMPANY | Minor source | No |
| EASTERN LARAMIE COUNTY LANDFILL (EASTERN LARAMIE COUNTY SOLID WASTE DISTRICT) | Minor source | No |
| EDWARDS CONTRACTORS AMER. NAT. BANK | Minor source | No |
| F.E. WARREN AIR FORCE BASE (UNITED STATES AIR FORCE) | Minor source | No |
| FARROWING FARMS 1&2 (NFP WEST, RLLP) | Minor source | No |
| JAMES E. SIMON (CT-862A) | Minor source | No |
| JAMES SIMON (CT-509) | Minor source | No |
| KAISER FRANCIS OIL CO-ROHWEDER 2, 8 & 10 | Minor source | No |
| LT ENVIRONMENTAL-SW CHEY LAUST REMEDIATN | Minor source | No |
| MARTING MARIETTA MATERIALS GRANITE CANYO | Minor source | No |
| MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | Major source | No |
| MICROSOFT CHEYENNE DATA CENTER CYS13 & CYS14 (MICROSOFT CORP) | Synthetic minor source | No |
| MICROSOFT CHEYENNE DATA CENTER CYS17 - CYS22 (MICROSOFT CORP) | Synthetic minor source | No |
| NORTHERN IMP CT-812 | Minor source | No |
| NORTHERN IMP CT-814 | Minor source | No |
| PORTABLE HOT MIX ASPHALT PLANT (SIMON CONTRACTORS) | Minor source | No |
| SILO GAS PLANT (KAISER FRONTIER MID-STREAM LLC) | Minor source | No |
| STAR AGGREG (CT-835) | Minor source | No |
| STC CONSTRUCTION CO., INC- CT-156 | Minor source | No |
| SUNCORE ENERGY PIPELINE CHEYENNE STATION | Minor source | No |
| TILTON READY MIX KING PIT | Minor source | No |
| UNITED BLOOD SERVICES -STANDBY GENERATOR | Minor source | No |
| UNIV CORP OF ATMOS RES NCAR WY SUPERCOMP | Minor source | No |
| WYOM ASPH CT-465 | Minor source | No |
| WYOM HWY DEPT CT-146 | Minor source | No |
| WYOM HWY DEPT CT-233 | Minor source | No |
| WYOM HWY DEPT OP-7 | Minor source | No |
| WYOM HWY DEPT RE-32 | Minor source | No |
| WYOM HWY DEPT RE-35 | Minor source | No |
| WYOM HWY DEPT RE-37 | Minor source | No |
| WYOM HWY DEPT RE-85 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.