EPA Air · stack tests by state and year
Air-emissions stack tests in Oklahoma, 2025
- 1,229Stack 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 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Oklahoma, 2025
- Kingfisher County 231
- Canadian County 167
- Grady County 132
- Blaine County 67
- Stephens County 62
- Pittsburg County 48
- Woods County 46
- Garfield County 42
- Garvin County 41
- Alfalfa County 41
- Hughes County 37
- Carter County 34
- Coal County 33
- Beckham County 24
- Oklahoma County 23
- Dewey County 23
- Roger Mills County 21
- Custer County 20
- Major County 15
- Woodward County 15
- McClain County 11
- Marshall County 10
- Washita County 10
- McIntosh County 8
- Latimer County 7
- Ellis County 7
- Logan County 7
- Creek County 6
- Bryan County 5
- Lincoln County 4
- Tulsa County 3
- Mayes County 3
- Texas County 3
Oklahoma, other years
Air-emissions stack tests recorded in Oklahoma, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-01-14 | TOM STACK LLC / CHISHOLM PLANT | CASHION, Kingfisher, OK | Pass | State |
| 2025-01-14 | MARKWEST OKLAHOMA GAS CO LLC / LOYAL COMPRESSOR STATION | LOYAL, Kingfisher, OK | Pass | State |
| 2025-01-14 | ENABLE GAS TRANSMISSION LLC / SOUTHEAST SPIRO COMPRESSOR STATION | SPIRO, Le Flore, OK | Pass | State |
| 2025-01-13 | ET GATHERING PROCESSING LLC / BOBCAT COMPRESSOR STATION | HYDRO, Blaine, OK | Pass | State |
| 2025-01-13 | ET GATHERING PROCESSING LLC / BOBCAT COMPRESSOR STATION | HYDRO, Blaine, OK | Pass | State |
| 2025-01-13 | BCE MACH LLC / MADDEN 26 23 10N 7W PAD | MINCO, Grady, OK | Pass | State |
| 2025-01-10 | BCE MACH LLC / SUMMER MOON 8 12N 8W PAD | EL RENO, Canadian, OK | Pass | State |
| 2025-01-10 | BCE MACH LLC / RL LANCASTER 26 28 13 1H STA | CAPRON, Woods, OK | Pass | State |
| 2025-01-09 | ONEOK GAS TRANSPORTATION LLC / THUNDER PLAINS COMPRESSOR STATION | SEILING, Dewey, OK | Pass | State |
| 2025-01-09 | TOM STACK LLC / COOP COMPRESSOR FACILITY | OKARCHE, Kingfisher, OK | Pass | State |
| 2025-01-08 | TALL OAK MIDCON LLC / CARMEN COMPRESSOR STATION | CARMEN, Alfalfa, OK | Pass | State |
| 2025-01-08 | ONEOK GAS TRANSPORTATION LLC / THUNDER PLAINS COMPRESSOR STATION | SEILING, Dewey, OK | Pass | State |
| 2025-01-08 | ONEOK GAS TRANSPORTATION LLC / THUNDER PLAINS COMPRESSOR STATION | SEILING, Dewey, OK | Pass | State |
| 2025-01-08 | ET GATHERING PROCESSING LLC / MIDDLEBERG COMPRESSOR STATION | BLANCHARD, Grady, OK | Pass | State |
| 2025-01-08 | ET GATHERING PROCESSING LLC / MIDDLEBERG COMPRESSOR STATION | BLANCHARD, Grady, OK | Pass | State |
| 2025-01-08 | ET GATHERING PROCESSING LLC / MIDDLEBERG COMPRESSOR STATION | BLANCHARD, Grady, OK | Pass | State |
| 2025-01-08 | ET GATHERING PROCESSING LLC / VANARKEL COMPRESSOR STATION | BRAY, Stephens, OK | Pass | State |
| 2025-01-07 | TALL OAK MIDCON LLC / CARMEN COMPRESSOR STATION | CARMEN, Alfalfa, OK | Pass | State |
| 2025-01-07 | ENABLE GAS TRANSMISSION LLC / ALLEN COMPRESSOR STATION | ALLEN, Hughes, OK | Pass | State |
| 2025-01-07 | FW MIDCON I LLC / LULA 1709 2H 3H 16X GILL 1709 2H 3H 4X | LOYAL, Kingfisher, OK | Pass | State |
| 2025-01-07 | CHISHOLM OIL AND GAS OPERATING LLC / WINCHESTER 1 30H | GUTHRIE, Logan, OK | Pass | State |
| 2025-01-07 | TULSA LFG LLC / AMERICAN ENVIRONMENTAL LANDFILL | SAND SPRINGS, Osage, OK | Pass | State |
| 2025-01-07 | ET GATHERING PROCESSING LLC / DOYLE COMPRESSOR STATION | VELMA, Stephens, OK | Pass | State |
| 2025-01-07 | ET GATHERING PROCESSING LLC / DOYLE COMPRESSOR STATION | VELMA, Stephens, OK | Pass | State |
| 2025-01-07 | DCP OPERATING CO LP / STRAIGHT COMPRESSOR STATION | GUYMON, Texas, OK | Pass | State |
| 2025-01-06 | TOM STACK LLC / SPINDLETAP COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2025-01-06 | ET GATHERING PROCESSING LLC / ALEX COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2025-01-03 | BCE MACH LLC / ELMENHORST 1H 01 12 | EL RENO, Canadian, OK | Pass | State |
| 2025-01-02 | BCE MACH LLC / CLARK 15 29 10 1H STATION | AMORITA, Alfalfa, OK | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.