EPA Air · stack tests by county and year
Air-emissions stack tests in Ellis County, Oklahoma, 2025
- 7Stack 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 Ellis 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 Ellis County facility page.
Ellis County, Oklahoma, 2025
Air-emissions stack tests in Ellis County, other years
Air-emissions stack tests recorded in Ellis County, Oklahoma, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-07-24 | ONEOK FIELD SERVICES CO LLC / PACKSADDLE COMPRESSOR STATION | Pass | State |
| 2025-05-20 | DCP OPERATING CO LP / HOBIT COMPRESSOR STATION — high-priority violation on file | Pass | State |
| 2025-02-04 | ONEOK FIELD SERVICES CO LLC / PACKSADDLE COMPRESSOR STATION | Pass | State |
| 2025-02-03 | ONEOK FIELD SERVICES CO LLC / PACKSADDLE COMPRESSOR STATION | Pass | State |
| 2025-02-03 | ONEOK FIELD SERVICES CO LLC / PACKSADDLE COMPRESSOR STATION | Pass | State |
| 2025-01-29 | ET GATHERING PROCESSING LLC / BISHOP 1 COMPRESSOR STATION | Pass | State |
| 2025-01-29 | ET GATHERING PROCESSING LLC / WOLF CREEK COMPRESSOR STATION | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.