EPA Air · stack tests by county and year
Air-emissions stack tests in Campbell County, Wyoming, 2026
- 255Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Campbell County, Wyoming during 2026. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Campbell County facility page.
Campbell County, Wyoming, 2026
Air-emissions stack tests in Campbell County, other years
Air-emissions stack tests recorded in Campbell County, Wyoming, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-05-28 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-28 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-19 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | Pass | State |
| 2026-05-19 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | Pass | State |
| 2026-05-19 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | Pass | State |
| 2026-05-19 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | Pass | State |
| 2026-05-19 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | Pass | State |
| 2026-05-19 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | Pass | State |
| 2026-05-19 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | Pass | State |
| 2026-05-19 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | Pass | State |
| 2026-05-18 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-18 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-18 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-18 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-18 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-18 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-18 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-18 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-08 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-08 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-08 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-08 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-08 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-08 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-08 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-08 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-07 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | Pass | State |
| 2026-05-07 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | Pass | State |
| 2026-05-07 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | Pass | State |
| 2026-05-07 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | Pass | State |
| 2026-05-07 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | Pass | State |
| 2026-05-07 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | Pass | State |
| 2026-05-07 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-07 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-07 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-07 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-07 | ANTELOPE HILLS COMPRESSOR STATION (EOG RESOURCES) | Pass | State |
| 2026-05-05 | WYODAK PLANT (PACIFICORP) | Pass | State |
| 2026-05-05 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | Pass | State |
| 2026-05-05 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | Pass | State |
| 2026-04-22 | MORGAN DRAW/CRENSHAW HILL (PRONGHORN MIDSTREAM LLC) | Pass | State |
| 2026-04-22 | MORGAN DRAW/CRENSHAW HILL (PRONGHORN MIDSTREAM LLC) | Pass | State |
| 2026-04-22 | MORGAN DRAW/CRENSHAW HILL (PRONGHORN MIDSTREAM LLC) | Pass | State |
| 2026-04-01 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-04-01 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-04-01 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-04-01 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-04-01 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-04-01 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-04-01 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-04-01 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-03-26 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | Pass | State |
| 2026-03-26 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-25 | MEADOWLARK COMPRESSOR STATION (TALLGRASS MIDSTREAM, LLC) | Pass | State |
| 2026-03-11 | MORGAN DRAW/CRENSHAW HILL (PRONGHORN MIDSTREAM LLC) | Pass | State |
| 2026-03-11 | MORGAN DRAW/CRENSHAW HILL (PRONGHORN MIDSTREAM LLC) | Pass | State |
| 2026-03-05 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | Pass | State |
| 2026-03-05 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | Pass | State |
| 2026-03-05 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | Pass | State |
| 2026-02-27 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-27 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-27 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-27 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-27 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-27 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-26 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-26 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-26 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-26 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-25 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-25 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-25 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-25 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-25 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-25 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-24 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-24 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
| 2026-02-24 | HATCHET COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.