EPA Air · stack tests by county and year
Air-emissions stack tests in Delaware County, Ohio, 2025
- 3Stack 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 Delaware 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 Delaware County facility page.
Delaware County, Ohio, 2025
Air-emissions stack tests in Delaware County, other years
Air-emissions stack tests recorded in Delaware County, Ohio, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-10-29 | LIBERTY CASTING INC. — high-priority violation on file | Pass | State |
| 2025-10-29 | LIBERTY CASTING INC. — high-priority violation on file | Pass | State |
| 2025-10-14 | LIBERTY CASTING INC. — high-priority violation on file | Fail | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.