EPA Air · stack tests by county and year
Air-emissions stack tests in Washington County, Ohio, 2025
- 12Stack 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 Washington 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 Washington County facility page.
Washington County, Ohio, 2025
Air-emissions stack tests in Washington County, other years
Air-emissions stack tests recorded in Washington County, Ohio, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-08-12 | MAR-ZANE PLANT NO 2 | Pass | State |
| 2025-06-11 | ERAMET MARIETTA, INC. — high-priority violation on file | Pass | State |
| 2025-06-11 | ERAMET MARIETTA, INC. — high-priority violation on file | Pass | State |
| 2025-06-11 | ERAMET MARIETTA, INC. — high-priority violation on file | Pass | State |
| 2025-06-11 | ERAMET MARIETTA, INC. — high-priority violation on file | Pass | State |
| 2025-06-06 | FERROGLOBE USA METALLURGICAL, INC. | Pass | State |
| 2025-06-06 | FERROGLOBE USA METALLURGICAL, INC. | Pass | State |
| 2025-06-06 | FERROGLOBE USA METALLURGICAL, INC. | Pass | State |
| 2025-06-06 | FERROGLOBE USA METALLURGICAL, INC. | Pass | State |
| 2025-04-16 | DTE MARIETTA | Pass | State |
| 2025-04-16 | DTE MARIETTA | Pass | State |
| 2025-02-12 | ERAMET MARIETTA, 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.