EPA Air · stack tests by county and year
Air-emissions stack tests in Custer County, Oklahoma, 2025
- 20Stack 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 Custer County, Oklahoma during 2025. 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 Custer County facility page.
Custer County, Oklahoma, 2025
Air-emissions stack tests in Custer County, other years
Air-emissions stack tests recorded in Custer County, Oklahoma, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-10-20 | ENABLE GAS TRANSMISSION LLC / CUSTER COMPRESSOR STATION | Pass | State |
| 2025-09-11 | MARKWEST OKLAHOMA GAS CO LLC / BUTLER ARAPAHO GAS PLANT — high-priority violation on file | Pass | State |
| 2025-09-11 | MARKWEST OKLAHOMA GAS CO LLC / BUTLER ARAPAHO GAS PLANT — high-priority violation on file | Pass | State |
| 2025-08-19 | ONEOK FIELD SERVICES CO LLC / WEST SMALLWOOD COMPRESSOR STATION | Pass | State |
| 2025-08-18 | ONEOK FIELD SERVICES CO LLC / MEYERS DURHAM 8 INCH LOOP COMPRSSOR ST | Pass | State |
| 2025-07-31 | MARKWEST OKLAHOMA GAS CO LLC / BUTLER ARAPAHO GAS PLANT — high-priority violation on file | Pass | State |
| 2025-07-31 | MARKWEST OKLAHOMA GAS CO LLC / BUTLER ARAPAHO GAS PLANT — high-priority violation on file | Pass | State |
| 2025-07-31 | MARKWEST OKLAHOMA GAS CO LLC / BUTLER ARAPAHO GAS PLANT — high-priority violation on file | Pass | State |
| 2025-06-30 | ONEOK FIELD SERVICES CO LLC / SMALLWOOD COMPRESSOR STATION | Pass | State |
| 2025-06-30 | ONEOK FIELD SERVICES CO LLC / SMALLWOOD COMPRESSOR STATION | Pass | State |
| 2025-06-25 | ONEOK FIELD SERVICES CO LLC / MEYERS DURHAM 8 INCH LOOP COMPRSSOR ST | Pass | State |
| 2025-06-20 | ONEOK FIELD SERVICES CO LLC / SMALLWOOD COMPRESSOR STATION | Pass | State |
| 2025-06-12 | BCE MACH LLC / GOUCHER 1 34H PAD | Pass | State |
| 2025-04-17 | DEVON ENERGY PRODUCTION CO LP / MALLARD PAD 1 | Pass | State |
| 2025-03-24 | ONEOK FIELD SERVICES CO LLC / WEST SMALLWOOD COMPRESSOR STATION | Pass | State |
| 2025-03-13 | ONEOK FIELD SERVICES CO LLC / WILDHORSE LATERAL COMPRESSOR STATION | Pass | State |
| 2025-02-24 | DEVON ENERGY PRODUCTION CO LP / MALLARD PAD 1 | Pass | State |
| 2025-01-29 | MARKWEST OKLAHOMA GAS CO LLC / CUSTER STABILIZATION STATION | Pass | State |
| 2025-01-29 | MARKWEST OKLAHOMA GAS CO LLC / CUSTER STABILIZATION STATION | Pass | State |
| 2025-01-22 | UNIT PETROLEUM CO / SARATOGA PAD | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.