EPA Air · stack tests by state and year
Air-emissions stack tests in Oklahoma, 2026
- 15Stack 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 Oklahoma during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Oklahoma, other years
Air-emissions stack tests recorded in Oklahoma, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-06-25 | ET GATHERING PROCESSING LLC / TUSSY COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pending | State |
| 2026-06-24 | ENLINK MIDSTREAM SERVICES LLC / SAPPHIRE COMPRESSOR STATION | CALUMET, Canadian, OK | Pending | State |
| 2026-05-27 | SOUTHERN STAR CTL GAS PIPELINE INC / RATLIFF CITY COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pass | State |
| 2026-05-07 | TARGA PIPELINE MIDCONTINENT WESTOK LLC / WAUKOMIS COMPRESSOR STATION | WAUKOMIS, Garfield, OK | Pass | State |
| 2026-05-07 | TARGA PIPELINE MIDCONTINENT WESTOK LLC / WAUKOMIS COMPRESSOR STATION | WAUKOMIS, Garfield, OK | Pass | State |
| 2026-04-28 | REDCLIFF MIDSTREAM LLC / REDCLIFF PLANT | MUTUAL, Woodward, OK | Pending | State |
| 2026-04-27 | REDCLIFF MIDSTREAM LLC / REDCLIFF PLANT | MUTUAL, Woodward, OK | Pending | State |
| 2026-04-08 | MARKWEST OKLAHOMA GAS CO LLC / DOROTHY COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2026-03-25 | GEORGIA PACIFIC MUSKOGEE LLC / MUSKOGEE MILL | MUSKOGEE, Muskogee, OK | Pass | State |
| 2026-03-24 | P AND K STONE LLC / MILL CREEK QUARRY — high-priority violation on file | MILL CREEK, Johnston, OK | Pass | State |
| 2026-03-24 | GEORGIA PACIFIC MUSKOGEE LLC / MUSKOGEE MILL | MUSKOGEE, Muskogee, OK | Pass | State |
| 2026-03-17 | ET GATHERING PROCESSING LLC / ALEX COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2026-03-12 | SUPERIOR MIDSTREAM LLC / REEDING COMPRESSOR STATION | CASHION, Kingfisher, OK | Pass | State |
| 2026-02-17 | ONEOK GAS TRANSPORTATION LLC / SALT CREEK COMPRESSOR STATION | DEPEW, Creek, OK | Pass | State |
| 2026-01-30 | TOM STACK LLC / BIG SKY COMPRESSOR STATION | UNION CITY, Canadian, OK | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.