EPA Air · stack tests by county and year
Air-emissions stack tests in Marion County, Ohio, 2025
- 20Stack 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 Marion 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 Marion County facility page.
Marion County, Ohio, 2025
Air-emissions stack tests in Marion County, other years
Air-emissions stack tests recorded in Marion County, Ohio, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-03 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-02 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-07-02 | NUCOR STEEL MARION, INC. | Pass | State |
| 2025-05-28 | MAR-ZANE INC - PLANT 7 | Pass | State |
| 2025-03-25 | GLEN-GERY CORP. IBERIA PLANT | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.