EPA Air · stack tests by county and year
Air-emissions stack tests in Mahoning County, Ohio, 2025
- 23Stack 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 Mahoning 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 Mahoning County facility page.
Mahoning County, Ohio, 2025
- Inspections 12
Air-emissions stack tests in Mahoning County, other years
Air-emissions stack tests recorded in Mahoning County, Ohio, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-10 | LIMESTONE RNG HIGH BTU FACILITY — high-priority violation on file | Pass | State |
| 2025-12-10 | LIMESTONE RNG HIGH BTU FACILITY — high-priority violation on file | Pass | State |
| 2025-12-10 | LIMESTONE RNG HIGH BTU FACILITY — high-priority violation on file | Pass | State |
| 2025-11-18 | HILCORP ENERGY - POLAND-CLL PRODUCTION FACILITY | Pass | State |
| 2025-11-18 | HILCORP ENERGY - POLAND-CLL PRODUCTION FACILITY | Pass | State |
| 2025-11-18 | HILCORP ENERGY - POLAND-CLL PRODUCTION FACILITY | Pass | State |
| 2025-11-07 | CARBON LIMESTONE SANITARY LANDFILL | Pass | State |
| 2025-11-07 | CARBON LIMESTONE SANITARY LANDFILL | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2025-02-21 | MAHONING LANDFILL, INC. | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.