EPA Air · stack tests by county and year
Air-emissions stack tests in Mitchell County, North Carolina, 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 Mitchell County, North Carolina 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 Mitchell County facility page.
Mitchell County, North Carolina, 2025
- Inspections 21
Air-emissions stack tests in Mitchell County, other years
Air-emissions stack tests recorded in Mitchell County, North Carolina, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-05-30 | SIBELCO NORTH AMERICA - RED HILL FACILITY | Pass | State |
| 2025-05-29 | SIBELCO NORTH AMERICA - CRYSTAL FACILITY | Pass | State |
| 2025-03-11 | SIBELCO NORTH AMERICA - RED HILL FACILITY | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.