EPA Air · stack tests by county and year
Air-emissions stack tests in Columbiana County, Ohio, 2025
- 27Stack 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 Columbiana County, Ohio 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 Columbiana County facility page.
Columbiana County, Ohio, 2025
Air-emissions stack tests in Columbiana County, other years
Air-emissions stack tests recorded in Columbiana County, Ohio, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-19 | HILCORP ENERGY - FAIRFIELD-UNKEFER PRODUCTION FACILITY | Pass | State |
| 2025-11-19 | HILCORP ENERGY - FAIRFIELD-UNKEFER PRODUCTION FACILITY | Pass | State |
| 2025-11-19 | HILCORP ENERGY - FAIRFIELD-UNKEFER PRODUCTION FACILITY | Pass | State |
| 2025-08-19 | EOG RESOURCES, INC. - KITZMILLER CL KNX PAD | Pass | State |
| 2025-08-19 | EOG RESOURCES, INC. - KITZMILLER CL KNX PAD | Pass | State |
| 2025-08-19 | EOG RESOURCES, INC. - KITZMILLER CL KNX PAD | Pass | State |
| 2025-07-03 | SEAFORTH MINERAL & ORE CO INC | Pass | State |
| 2025-06-11 | ROSEBUD DATA CENTER — high-priority violation on file | Pass | State |
| 2025-06-11 | ROSEBUD DATA CENTER — high-priority violation on file | Pass | State |
| 2025-06-11 | ROSEBUD DATA CENTER — high-priority violation on file | Pass | State |
| 2025-06-11 | ROSEBUD DATA CENTER — high-priority violation on file | Pass | State |
| 2025-06-11 | ROSEBUD DATA CENTER — high-priority violation on file | Pass | State |
| 2025-06-11 | ROSEBUD DATA CENTER — high-priority violation on file | Pass | State |
| 2025-06-11 | ROSEBUD DATA CENTER — high-priority violation on file | Pass | State |
| 2025-06-11 | ROSEBUD DATA CENTER — high-priority violation on file | Pass | State |
| 2025-06-11 | ROSEBUD DATA CENTER — high-priority violation on file | Pass | State |
| 2025-05-20 | HILCORP ENERGY - FAIRFIELD-UNKEFER PRODUCTION FACILITY | Pass | State |
| 2025-05-20 | HILCORP ENERGY - FAIRFIELD-UNKEFER PRODUCTION FACILITY | Pass | State |
| 2025-05-20 | HILCORP ENERGY - FAIRFIELD-UNKEFER PRODUCTION FACILITY | Pass | State |
| 2025-02-26 | SALINEVILLE COMPRESSOR STATION | Pass | State |
| 2025-02-26 | SALINEVILLE COMPRESSOR STATION | Pass | State |
| 2025-02-12 | EAST OHIO GAS - COLUMBIANA COMPRESSOR STATION | Pass | State |
| 2025-02-12 | EAST OHIO GAS - COLUMBIANA COMPRESSOR STATION | Pass | State |
| 2025-02-12 | EAST OHIO GAS - COLUMBIANA COMPRESSOR STATION | Pass | State |
| 2025-02-12 | EAST OHIO GAS - COLUMBIANA COMPRESSOR STATION | Pass | State |
| 2025-02-12 | EAST OHIO GAS - COLUMBIANA COMPRESSOR STATION | Pass | State |
| 2025-02-12 | EAST OHIO GAS - COLUMBIANA COMPRESSOR STATION | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.