EPA Air · stack tests by county and year
Air-emissions stack tests in Jefferson County, Ohio, 2025
- 121Stack 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 Jefferson 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 Jefferson County facility page.
Jefferson County, Ohio, 2025
Air-emissions stack tests in Jefferson County, other years
Air-emissions stack tests recorded in Jefferson County, Ohio, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-18 | APEX LFG ENERGY, LLC | Pass | State |
| 2025-12-18 | APEX LFG ENERGY, LLC | Pass | State |
| 2025-12-18 | GULFPORT APPALACHIA, LLC - LIMESTONE PAD | Pass | State |
| 2025-12-18 | GULFPORT APPALACHIA, LLC - LIMESTONE PAD | Pass | State |
| 2025-12-18 | GULFPORT APPALACHIA, LLC - LIMESTONE PAD | Pass | State |
| 2025-12-17 | ASCENT RESOURCES - UTICA LLC - GRYWALSKI MTP JF | Pass | State |
| 2025-12-17 | ASCENT RESOURCES - UTICA LLC - GRYWALSKI MTP JF | Pass | State |
| 2025-12-17 | ASCENT RESOURCES - UTICA LLC - GRYWALSKI MTP JF | Pass | State |
| 2025-12-17 | ASCENT RESOURCES - UTICA LLC - GIUSTO CRC JF | Pass | State |
| 2025-12-17 | ASCENT RESOURCES - UTICA LLC - GIUSTO CRC JF | Pass | State |
| 2025-12-17 | ASCENT RESOURCES - UTICA LLC - GIUSTO CRC JF | Pass | State |
| 2025-12-16 | ASCENT RESOURCES - UTICA LLC - ZIMNOX WLS JF | Pass | State |
| 2025-12-16 | ASCENT RESOURCES - UTICA LLC - ZIMNOX WLS JF | Pass | State |
| 2025-12-16 | ASCENT RESOURCES - UTICA LLC - ZIMNOX WLS JF | Pass | State |
| 2025-12-16 | ASCENT RESOURCES - UTICA LLC - DOYEN WEL JF | Pass | State |
| 2025-12-16 | ASCENT RESOURCES - UTICA LLC - DOYEN WEL JF | Pass | State |
| 2025-12-16 | ASCENT RESOURCES - UTICA LLC - DOYEN WEL JF | Pass | State |
| 2025-12-15 | ASCENT RESOURCES - UTICA LLC - DAWSON SMF JF WELLPAD | Pass | State |
| 2025-12-15 | ASCENT RESOURCES - UTICA LLC - DAWSON SMF JF WELLPAD | Pass | State |
| 2025-12-15 | ASCENT RESOURCES - UTICA LLC - DAWSON SMF JF WELLPAD | Pass | State |
| 2025-12-12 | ASCENT RESOURCES - UTICA LLC - PHILLIPS MTP JF | Pass | State |
| 2025-12-12 | ASCENT RESOURCES - UTICA LLC - PHILLIPS MTP JF | Pass | State |
| 2025-12-12 | ASCENT RESOURCES - UTICA LLC - PHILLIPS MTP JF | Pass | State |
| 2025-12-10 | ASCENT RESOURCES - UTICA LLC - COLLINS WYN JF | Pass | State |
| 2025-12-10 | ASCENT RESOURCES - UTICA LLC - COLLINS WYN JF | Pass | State |
| 2025-12-10 | ASCENT RESOURCES - UTICA LLC - COLLINS WYN JF | Pass | State |
| 2025-12-10 | ASCENT RESOURCES - UTICA LLC - ARCHIE WYN JF | Pass | State |
| 2025-12-10 | ASCENT RESOURCES - UTICA LLC - ARCHIE WYN JF | Pass | State |
| 2025-12-10 | ASCENT RESOURCES - UTICA LLC - ARCHIE WYN JF | Pass | State |
| 2025-12-10 | ASCENT RESOURCES - UTICA LLC - CROWELL WYN JF | Pass | State |
| 2025-12-10 | ASCENT RESOURCES - UTICA LLC - CROWELL WYN JF | Pass | State |
| 2025-12-10 | ASCENT RESOURCES - UTICA LLC - CROWELL WYN JF | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - FALDOWSKI SMF JF | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - FALDOWSKI SMF JF | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - FALDOWSKI SMF JF | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - LORI SMF JF | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - LORI SMF JF | Pass | State |
| 2025-12-09 | ASCENT RESOURCES - UTICA LLC - LORI SMF JF | Pass | State |
| 2025-12-02 | CARDINAL POWER PLANT (CARDINAL OPERATING COMPANY) | Pass | State |
| 2025-11-20 | ASCENT RESOURCES - UTICA LLC - OMAITS SMF JF | Pass | State |
| 2025-11-20 | ASCENT RESOURCES - UTICA LLC - OMAITS SMF JF | Pass | State |
| 2025-11-20 | ASCENT RESOURCES - UTICA LLC - OMAITS SMF JF | Pass | State |
| 2025-11-20 | GULFPORT APPALACHIA, LLC - KINYO PAD | Pass | State |
| 2025-11-20 | GULFPORT APPALACHIA, LLC - KINYO PAD | Pass | State |
| 2025-11-20 | GULFPORT APPALACHIA, LLC - KINYO PAD | Pass | State |
| 2025-10-16 | GULFPORT APPALACHIA, LLC - EXTREME PAD | Pass | State |
| 2025-10-16 | GULFPORT APPALACHIA, LLC - EXTREME PAD | Pass | State |
| 2025-10-16 | GULFPORT APPALACHIA, LLC - EXTREME PAD | Pass | State |
| 2025-10-16 | GULFPORT APPALACHIA, LLC - LIMESTONE PAD | Pass | State |
| 2025-10-16 | GULFPORT APPALACHIA, LLC - LIMESTONE PAD | Pass | State |
| 2025-10-16 | GULFPORT APPALACHIA, LLC - LIMESTONE PAD | Pass | State |
| 2025-10-16 | GULFPORT APPALACHIA, LLC - KINYO PAD | Pass | State |
| 2025-10-16 | GULFPORT APPALACHIA, LLC - KINYO PAD | Pass | State |
| 2025-10-16 | GULFPORT APPALACHIA, LLC - KINYO PAD | Pass | State |
| 2025-10-15 | ASCENT RESOURCES - UTICA LLC - HOWELL 33 SMF JF | Pass | State |
| 2025-10-15 | ASCENT RESOURCES - UTICA LLC - HOWELL 33 SMF JF | Pass | State |
| 2025-10-15 | ASCENT RESOURCES - UTICA LLC - HOWELL 33 SMF JF | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - VINCENT MTP JF | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - VINCENT MTP JF | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - VINCENT MTP JF | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - KRINKE MTP JF | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - KRINKE MTP JF | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - KRINKE MTP JF | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - FAUNA WEL JF | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - FAUNA WEL JF | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - FAUNA WEL JF | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - HAMMACK CRC JF | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - HAMMACK CRC JF | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - HAMMACK CRC JF | Pass | State |
| 2025-09-17 | ASCENT RESOURCES - UTICA LLC - NOLAN CRC JF | Pass | State |
| 2025-09-17 | ASCENT RESOURCES - UTICA LLC - NOLAN CRC JF | Pass | State |
| 2025-09-17 | ASCENT RESOURCES - UTICA LLC - NOLAN CRC JF | Pass | State |
| 2025-09-16 | ASCENT RESOURCES - UTICA LLC - HOWELL 33 SMF JF | Pass | State |
| 2025-09-16 | ASCENT RESOURCES - UTICA LLC - HOWELL 33 SMF JF | Pass | State |
| 2025-09-16 | ASCENT RESOURCES - UTICA LLC - HOWELL 33 SMF JF | Pass | State |
| 2025-09-11 | MPLX TERMINALS LLC - STEUBENVILLE TERMINAL | Pass | State |
| 2025-08-21 | ASCENT RESOURCES - UTICA LLC - ZEDS MTP JF | Pass | State |
| 2025-08-21 | ASCENT RESOURCES - UTICA LLC - ZEDS MTP JF | Pass | State |
| 2025-08-21 | ASCENT RESOURCES - UTICA LLC - ZEDS MTP JF | Pass | State |
| 2025-08-19 | ASCENT RESOURCES - UTICA LLC - ROXY CRC JF | Pass | State |
| 2025-08-19 | ASCENT RESOURCES - UTICA LLC - ROXY CRC JF | Pass | State |
| 2025-08-19 | ASCENT RESOURCES - UTICA LLC - ROXY CRC JF | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA, LLC - CROSS CREEK A | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA, LLC - CROSS CREEK A | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA, LLC - CROSS CREEK A | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA LLC - DICKSON CRC JF | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA LLC - DICKSON CRC JF | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA LLC - DICKSON CRC JF | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA LLC - MINGO CRC JF | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA LLC - MINGO CRC JF | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA LLC - MINGO CRC JF | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA LLC - GORDON CRC JF | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA LLC - GORDON CRC JF | Pass | State |
| 2025-07-21 | ASCENT RESOURCES - UTICA LLC - GORDON CRC JF | Pass | State |
| 2025-07-16 | ASCENT RESOURCES - UTICA LLC - RUTH MTP JF | Pass | State |
| 2025-07-16 | ASCENT RESOURCES - UTICA LLC - RUTH MTP JF | Pass | State |
| 2025-07-16 | ASCENT RESOURCES - UTICA LLC - RUTH MTP JF | Pass | State |
| 2025-07-15 | ASCENT RESOURCES - UTICA LLC - AMBER WEL JF | Pass | State |
| 2025-07-15 | ASCENT RESOURCES - UTICA LLC - AMBER WEL JF | Pass | State |
| 2025-07-15 | ASCENT RESOURCES - UTICA LLC - AMBER WEL JF | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.