EPA Air · inspections by state and year
Air-emissions inspections in Wyoming, 2025
- 74Inspections
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source. Every inspection below was recorded against a source in Wyoming during 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Wyoming, 2025
- Sweetwater County 16
- Campbell County 10
- Natrona County 7
- Carbon County 5
- Sublette County 4
- Uinta County 4
- Sheridan County 3
- Lincoln County 3
- Crook County 3
- Park County 3
- Converse County 3
Wyoming, other years
Air-emissions inspections recorded in Wyoming, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-10 | CHEYENNE RENEWABLE DIESEL COMPANY (CHEYENNE RENEWABLE DIESEL COMPANY LLC) | CHEYENNE, Laramie, WY | FCE On-Site | State |
| 2025-11-17 | FONTENELLE STATION (MOUNTAIN GAS RESOURCES LLC) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-11-17 | STORM SHELTER COMPRESSOR STATION (WGR OPERATING) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-10-29 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | CAMPBELL COUNTY, Campbell, WY | FCE On-Site | State |
| 2025-10-29 | BOLT 35 COMPRESSOR STATION (EOG RESOURCES, INC.) | CAMPBELL COUNTY, Campbell, WY | FCE On-Site | State |
| 2025-10-23 | OREGON BASIN GAS PLANT (MERIT ENERGY COMPANY) | PARK COUNTY, Park, WY | FCE On-Site | State |
| 2025-10-21 | ELK BASIN COMPRESSOR STATION (COLORADO INTERSTATE GAS) | PARK COUNTY, Park, WY | FCE On-Site | State |
| 2025-10-15 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-10-14 | LOST CABIN GAS PLANT (CONTANGO RESOURCES, LLC.) — high-priority violation on file | LOST CABIN, Fremont, WY | FCE On-Site | State |
| 2025-10-08 | KING COMPRESSOR STATION (COLORADO INTERSTATE GAS) | LINCOLN COUNTY, Lincoln, WY | FCE On-Site | State |
| 2025-10-07 | RINER STATION (SOUTHERN STAR CENTRAL GAS PIPELINE) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-10-01 | HULETT MILL (NEIMAN SAWMILL) | SUNDANCE, Crook, WY | FCE On-Site | State |
| 2025-09-29 | MILLS COMPLEX (BLACK HILLS BENTONITE LLC) | MILLS, Natrona, WY | FCE On-Site | State |
| 2025-09-25 | EIGHT MILE LAKE STATION (WILLIAMS FIELD SERVICES COMPANY) | CARBON COUNTY, Carbon, WY | FCE On-Site | State |
| 2025-09-25 | SHUTE CREEK TREATING FACILITY (EXXON MOBIL CORP) | LINCOLN COUNTY, Lincoln, WY | FCE On-Site | State |
| 2025-09-25 | WALTMAN 16 (HILCORP ENERGY COMPANY) | NATRONA COUNTY, Natrona, WY | FCE On-Site | State |
| 2025-09-24 | HOSPITAL WASTE INCINERATOR (BANNER HEALTH) — high-priority violation on file | CASPER, Natrona, WY | FCE On-Site | State |
| 2025-09-23 | CASPER CRUDE TO RAIL (CASPER CRUDE TO RAIL, LLC) | NATRONA COUNTY, Natrona, WY | FCE On-Site | State |
| 2025-09-18 | MUDDY CREEK STATION (KERN RIVER GAS TRANS) | LINCOLN COUNTY, Lincoln, WY | FCE On-Site | State |
| 2025-09-16 | COLONY EAST AND WEST PLANTS (AMERICAN COLLOID COMPANY) | COLONY, Crook, WY | FCE On-Site | State |
| 2025-09-11 | SCOTT COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | CONVERSE COUNTY, Converse, WY | FCE On-Site | State |
| 2025-09-11 | NEWCASTLE REFINERY (WYOMING REFINING CO) | NEWCASTLE, Weston, WY | FCE On-Site | State |
| 2025-09-10 | COAL CREEK MINE (THUNDER BASIN COAL COMPANY LLC) | WRIGHT, Campbell, WY | FCE On-Site | State |
| 2025-09-10 | CASPER SOLID WASTE MANAGEMENT FACILITY (CITY OF CASPER SOLID WASTE DIVISION) | CASPER, Natrona, WY | FCE On-Site | State |
| 2025-09-08 | DONKEY CREEK STATION (BELLE FOURCHE PIPELINE) | MOORCROFT, Crook, WY | FCE On-Site | State |
| 2025-09-04 | AIRPORT (NATRONA COUNTY INTERNATIONAL AIRPORT) | CASPER, Natrona, WY | FCE On-Site | State |
| 2025-08-28 | PRCC COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CONVERSE COUNTY, Converse, WY | FCE On-Site | State |
| 2025-08-27 | DRY FORK STATION (BASIN ELECTRIC POWER COOP) | GILLETTE, Campbell, WY | FCE On-Site | State |
| 2025-08-27 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | FCE On-Site | State |
| 2025-08-22 | SHERIDAN LANDFILL--SOLID WASTE DISPOSAL FACILITY (CITY OF SHERIDAN) | SHERIDAN, Sheridan, WY | FCE On-Site | State |
| 2025-08-21 | DOUGLAS GAS PLANT (TALLGRASS MIDSTREAM) | DOUGLAS, Converse, WY | FCE On-Site | State |
| 2025-08-21 | PAINTER COMPRESSOR STATION (KERN RIVER GAS TRANSMISSION) | EVANSTON, Uinta, WY | FCE On-Site | State |
| 2025-08-20 | LOVELL GRINDING PLANT (BENTONITE PERFORMANCE MINERALS) | LOVELL, Big Horn, WY | FCE On-Site | State |
| 2025-08-20 | BIRD CANYON/COUNTY LINE COMPRESSOR STATION (ENTERPRISE JONAH GAS GATHERING CO) | SUBLETTE COUNTY, Sublette, WY | FCE On-Site | State |
| 2025-08-20 | LUMAN COMPRESSOR STATION (ENTERPRISE JONAH GAS GATHERING CO) | SUBLETTE COUNTY, Sublette, WY | FCE On-Site | State |
| 2025-08-20 | GRANGER SODA ASH FACILITY (WE SODA WYOMING LP) | GRANGER, Sweetwater, WY | FCE On-Site | State |
| 2025-08-20 | CARTER CREEK GAS PLANT (HILCORP ENERGY CO) | EVANSTON, Uinta, WY | FCE On-Site | State |
| 2025-08-20 | EAST PAINTER FACILITY (NORTH SHORE EXPLORATION & PRODUCTION) | UINTA COUNTY, Uinta, WY | FCE On-Site | State |
| 2025-08-19 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | FCE On-Site | State |
| 2025-08-19 | BRIDGER COMPRESSOR STATION (ENTERPIRSE JONAH GAS GATHERING) | SUBLETTE COUNTY, Sublette, WY | FCE On-Site | State |
| 2025-08-13 | DOTY MOUNTAIN COMPRESSOR STATION (US REALM VENTURES) | CARBON COUNTY, Carbon, WY | FCE On-Site | State |
| 2025-08-12 | RAWLINS COMPRESSOR STATION (COLORADO INTERSTATE GAS) | CARBON COUNTY, Carbon, WY | FCE On-Site | State |
| 2025-07-30 | BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-07-29 | BLACK THUNDER MINE (THUNDER BASIN COAL COMPANY) | GILLETTE, Campbell, WY | FCE On-Site | State |
| 2025-07-23 | LOVELL PLANT (AMERICAN COLLOID CO) | LOVELL, Big Horn, WY | FCE On-Site | State |
| 2025-07-23 | LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file | WHEATLAND, Platte, WY | FCE On-Site | State |
| 2025-07-17 | GREEN RIVER WORKS (TATA CHEMICALS (SODA ASH) PARTNERS) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-07-09 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-07-09 | FREWEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-06-25 | SARATOGA MILL (SARATOGA INVESTMENTS LLC) | SARATOGA, Carbon, WY | FCE On-Site | State |
| 2025-06-19 | HEAT PLANT (UNIVERSITY OF WYOMING) | LARAMIE, Albany, WY | FCE On-Site | State |
| 2025-06-19 | FRANNIE LIME PLANT (DAKOTA COAL) | FRANNIE, Park, WY | FCE On-Site | State |
| 2025-06-18 | JIM BRIDGER PLANT (PACIFICORP) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-06-17 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | FCE On-Site | State |
| 2025-06-17 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-06-16 | PARADISE COMPRESSOR STATION (ENTERPRISE JONAH GAS GATHERING CO) | SUBLETTE COUNTY, Sublette, WY | FCE On-Site | State |
| 2025-06-03 | TABLE ROCK COMPRESSOR STATION (COLORADO INTERSTATE GAS) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-06-03 | BAXTER COMPRESSOR STATION (WYOMING INTERSTATE CO) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-05-22 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | FCE On-Site | State |
| 2025-05-22 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | FCE On-Site | State |
| 2025-05-22 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | FCE On-Site | State |
| 2025-05-22 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | FCE On-Site | State |
| 2025-05-21 | NEWCASTLE REFINERY (WYOMING REFINING CO) | NEWCASTLE, Weston, WY | FCE On-Site | State |
| 2025-05-14 | DRY WILLOW WATER PUMP STATION (POWDER RIVER MIDSTREAM, LLC) | CAMPBELL COUNTY, Campbell, WY | FCE On-Site | State |
| 2025-05-14 | FLETCHER/TERHUNE (POWDER RIVER MIDSTREAM, LLC) | JOHNSON COUNTY, Johnson, WY | FCE On-Site | State |
| 2025-05-14 | TABLE MOUNTAIN - CHAIR COMPRESSOR STATION (PRONGHORN MIDSTREAM LLC) | JOHNSON COUNTY, Johnson, WY | FCE On-Site | State |
| 2025-05-13 | ROCK SPRINGS FERTILIZER COMPLEX (SIMPLOT PHOSPHATES) | ROCK SPRINGS, Sweetwater, WY | FCE On-Site | State |
| 2025-04-10 | SHERIDAN TERMINAL (PHILLIPS 66 PARTNERS HOLDINGS LLC) | SHERIDAN, Sheridan, WY | FCE On-Site | State |
| 2025-04-10 | EAKIN COMPRESSOR STATION (MOUNTAIN WEST PIPELINE, LLC) | UINTA COUNTY, Uinta, WY | FCE On-Site | State |
| 2025-02-13 | GREEN RIVER WORKS (TATA CHEMICALS (SODA ASH) PARTNERS) | SWEETWATER COUNTY, Sweetwater, WY | PCE On-Site | State |
| 2025-02-04 | SHERIDAN MEDICAL CENTER (DEPARTMENT OF VETERANS AFFAIRS) | SHERIDAN, Sheridan, WY | FCE On-Site | State |
| 2025-01-28 | WORLAND PLANT #02 (CROWN CORK AND SEAL) | WORLAND, Washakie, WY | FCE On-Site | State |
| 2025-01-16 | CHAIN LAKES I5 35 4H-8H PAD (CROWHEART ENERGY, LLC) | SWEETWATER COUNTY, Sweetwater, WY | FCE On-Site | State |
| 2025-01-14 | GUERNSEY STATION (PLATTE PIPE LINE COMPANY) | GUERNSEY, Platte, WY | FCE On-Site | State |
Dates as filed by the agency that recorded the inspection. Figures from EPA’s ICIS-AIR download.