EPA Air · stack tests by state and year
Air-emissions stack tests in Wyoming, 2022
- 241Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Wyoming during 2022; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Wyoming, 2022
- Sweetwater County 51
- Campbell County 40
- Carbon County 31
- Converse County 27
- Laramie County 17
- Sublette County 17
- Natrona County 10
- Lincoln County 9
- Uinta County 7
- Platte County 7
- Johnson County 7
- Albany County 5
- Fremont County 5
- Crook County 3
- Weston County 3
Wyoming, other years
Air-emissions stack tests recorded in Wyoming, 2022
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2022-12-20 | DOUGLAS GAS PLANT (TALLGRASS MIDSTREAM) | DOUGLAS, Converse, WY | Pass | State |
| 2022-12-13 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | Pass | State |
| 2022-12-13 | GRANGER SODA ASH FACILITY (WE SODA WYOMING LP) | GRANGER, Sweetwater, WY | Pass | State |
| 2022-12-12 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2022-12-08 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pending | State |
| 2022-12-06 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-11-30 | TABLE ROCK COMPRESSOR STATION (COLORADO INTERSTATE GAS) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-11-22 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-11-22 | GREEN RIVER SODIUM PRODUCTS PLANT (CHURCH & DWIGHT INC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-11-21 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2022-11-18 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Fail | State |
| 2022-11-17 | LOVELL PLANT (AMERICAN COLLOID CO) | LOVELL, Big Horn, WY | Pass | State |
| 2022-11-17 | LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file | WHEATLAND, Platte, WY | Pass | State |
| 2022-11-17 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-11-11 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | Pass | State |
| 2022-11-10 | DAVE JOHNSTON (PACIFICORP) | GLENROCK, Converse, WY | Pass | State |
| 2022-11-10 | DAVE JOHNSTON (PACIFICORP) | GLENROCK, Converse, WY | Pass | State |
| 2022-11-09 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-11-09 | CHEYENNE PLANT (DYNO NOBEL INC) — high-priority violation on file | CHEYENNE, Laramie, WY | Pending | State |
| 2022-11-09 | CHEYENNE PLANT (DYNO NOBEL INC) — high-priority violation on file | CHEYENNE, Laramie, WY | Pass | State |
| 2022-11-08 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-11-08 | FREWEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-11-07 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-11-07 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-11-07 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2022-11-03 | LOVELL GRINDING PLANT (BENTONITE PERFORMANCE MINERALS) | LOVELL, Big Horn, WY | Pass | State |
| 2022-11-02 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2022-11-02 | MUDDY CREEK STATION (KERN RIVER GAS TRANS) | LINCOLN COUNTY, Lincoln, WY | Pass | State |
| 2022-11-01 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2022-11-01 | CHEYENNE PRAIRIE GENERATING STATION (CHEYENNE LIGHT FUEL & POWER) | CHEYENNE, Laramie, WY | Pass | State |
| 2022-11-01 | FONTENELLE STATION (MOUNTAIN GAS RESOURCES LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-10-27 | PRCC COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2022-10-26 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2022-10-25 | RINER STATION (SOUTHERN STAR CENTRAL GAS PIPELINE) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-10-21 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-10-20 | MORGAN DRAW/CRENSHAW HILL (PRONGHORN MIDSTREAM LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-10-20 | SCOTT COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2022-10-20 | CASPER SOLID WASTE MANAGEMENT FACILITY (CITY OF CASPER SOLID WASTE DIVISION) | CASPER, Natrona, WY | Pass | State |
| 2022-10-20 | PARADISE COMPRESSOR STATION (ENTERPRISE JONAH GAS GATHERING CO) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2022-10-18 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | Fail | State |
| 2022-10-17 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | Pass | State |
| 2022-10-17 | BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-10-13 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2022-10-13 | PAINTER COMPRESSOR STATION (KERN RIVER GAS TRANSMISSION) | EVANSTON, Uinta, WY | Pass | State |
| 2022-10-12 | CKN-ROCK SPRINGS STATION (MOUNTAIN WEST PIPELINE, LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-10-07 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-10-06 | LARAMIE CEMENT PLANT (MOUNTAIN CEMENT CO.) — high-priority violation on file | LARAMIE, Albany, WY | Pass | State |
| 2022-10-06 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2022-10-06 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-10-06 | CHAIN LAKES I5 35 4H-8H PAD (CROWHEART ENERGY, LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-10-05 | BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-10-04 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2022-10-04 | PRCC COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2022-09-30 | GREEN RIVER WORKS (TATA CHEMICALS (SODA ASH) PARTNERS) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-09-29 | COLONY PLANT (BENTONITE PERFORMANCE MINERALS) | COLONY, Crook, WY | Pass | State |
| 2022-09-29 | GREEN RIVER WORKS (TATA CHEMICALS (SODA ASH) PARTNERS) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-09-29 | T55 COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2022-09-28 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-09-27 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-09-22 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2022-09-21 | STEAMBOAT PROCESSING FACILITY (THUNDER CREEK GAS SERVICES) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2022-09-21 | CHEYENNE PRAIRIE GENERATING STATION (CHEYENNE LIGHT FUEL & POWER) | CHEYENNE, Laramie, WY | Pass | State |
| 2022-09-21 | CHEYENNE PRAIRIE GENERATING STATION (CHEYENNE LIGHT FUEL & POWER) | CHEYENNE, Laramie, WY | Pass | State |
| 2022-09-20 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | Pass | State |
| 2022-09-16 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | GILLETTE, Campbell, WY | Pass | State |
| 2022-09-15 | PAINTER COMPRESSOR STATION (KERN RIVER GAS TRANSMISSION) | EVANSTON, Uinta, WY | Pass | State |
| 2022-09-14 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-09-14 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2022-09-14 | NAUGHTON PLANT (PACIFICORP) | KEMMERER, Lincoln, WY | Pass | State |
| 2022-09-14 | NAUGHTON PLANT (PACIFICORP) | KEMMERER, Lincoln, WY | Pass | State |
| 2022-09-13 | FLETCHER/TERHUNE (POWDER RIVER MIDSTREAM, LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2022-09-13 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2022-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-09-12 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-09-09 | LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file | WHEATLAND, Platte, WY | Pass | State |
| 2022-09-08 | DAVE JOHNSTON (PACIFICORP) | GLENROCK, Converse, WY | Pass | State |
| 2022-09-07 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-09-06 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2022-09-06 | PRCC COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2022-09-01 | LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file | WHEATLAND, Platte, WY | Pass | State |
| 2022-08-30 | BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-08-30 | WAMSUTTER COMPRESSOR STATION (COLORADO INTERSTATE GAS) | WAMSUTTER, Sweetwater, WY | Pass | State |
| 2022-08-29 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Fail | State |
| 2022-08-26 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2022-08-25 | CASPER REFINERY (HF SINCLAIR CASPER REFINING LLC) — high-priority violation on file | EVANSVILLE, Natrona, WY | Pending | State |
| 2022-08-25 | GREEN RIVER WORKS (TATA CHEMICALS (SODA ASH) PARTNERS) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-08-25 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2022-08-25 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Fail | State |
| 2022-08-24 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-08-24 | CARTER CREEK GAS PLANT (HILCORP ENERGY CO) | EVANSTON, Uinta, WY | Pass | State |
| 2022-08-19 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2022-08-18 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2022-08-17 | ECHO SPRINGS GAS PLANT (WILLIAMS FIELD SERVICES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2022-08-16 | BUCKING HORSE PLANT (JACKALOPE GAS GATHERING) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2022-08-16 | BEAVER CREEK COMPRESSOR STATION (DENBURY ONSHORE, LLC) | RIVERTON, Fremont, WY | Pass | State |
| 2022-08-15 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2022-08-11 | LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file | WHEATLAND, Platte, WY | Fail | State |
| 2022-08-10 | DAVE JOHNSTON (PACIFICORP) | GLENROCK, Converse, WY | Pass | State |
| 2022-08-09 | PRCC COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2022-08-09 | LARAMIE RIVER STATION (BASIN ELECTRIC POWER COOPERATIVE) — high-priority violation on file | WHEATLAND, Platte, WY | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.