EPA Air · stack tests by county and year
Air-emissions stack tests in Mahoning County, Ohio, 2026
- 28Stack 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 2026. 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, 2026
Air-emissions stack tests in Mahoning County, other years
Air-emissions stack tests recorded in Mahoning County, Ohio, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-07-14 | TRIVIUM ALUMINUM PACKAGING USA CORPORATION | Pass | State |
| 2026-07-14 | TRIVIUM ALUMINUM PACKAGING USA CORPORATION | Pass | State |
| 2026-06-24 | TRIVIUM ALUMINUM PACKAGING USA CORPORATION | Pass | State |
| 2026-05-07 | EOG RESOURCES, INC - WEHR SPRING VALLEY FARM MH ELS PAD | Pass | State |
| 2026-05-07 | EOG RESOURCES, INC - WEHR SPRING VALLEY FARM MH ELS PAD | Pass | State |
| 2026-05-07 | EOG RESOURCES, INC - WEHR SPRING VALLEY FARM MH ELS PAD | Pass | State |
| 2026-04-28 | HILCORP ENERGY - POLAND-CLL PRODUCTION FACILITY | Pass | State |
| 2026-04-28 | HILCORP ENERGY - POLAND-CLL PRODUCTION FACILITY | Pass | State |
| 2026-04-28 | HILCORP ENERGY - POLAND-CLL PRODUCTION FACILITY | Pass | State |
| 2026-04-07 | CLEVELAND STEEL CONTAINER CORPORATION | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-02-21 | MAHONING LANDFILL, INC. | Pass | State |
| 2026-01-23 | BAIRD BROTHERS SAWMILL INC — high-priority violation on file | Pass | State |
| 2026-01-23 | BAIRD BROTHERS SAWMILL INC — high-priority violation on file | Pass | State |
| 2026-01-23 | BAIRD BROTHERS SAWMILL INC — high-priority violation on file | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.