EPA Air · stack tests by county and year
Air-emissions stack tests in Hamilton County, Tennessee, 2025
- 16Stack 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 Hamilton County, Tennessee 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 Hamilton County facility page.
Hamilton County, Tennessee, 2025
- Inspections 75
Air-emissions stack tests in Hamilton County, other years
Air-emissions stack tests recorded in Hamilton County, Tennessee, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-12 | ALLIED METAL CO. | Pass | Local |
| 2025-10-24 | MUELLER CO. LLC — high-priority violation on file | Pass | Local |
| 2025-10-23 | MUELLER CO. LLC — high-priority violation on file | Pass | Local |
| 2025-10-09 | ALLIED METAL CO. | Pass | Local |
| 2025-10-09 | ALLIED METAL CO. | Pass | Local |
| 2025-08-28 | SIGNAL MOUNTAIN CEMENT COMPANY D/B/A BUZZI UNICEM USA | Pass | Local |
| 2025-08-06 | NIPPON PAINT AUTOMOTIVE AMERICAS, INC. | Pass | Local |
| 2025-08-05 | VOLKSWAGEN GROUP OF AMERICA, INC. | Pass | Local |
| 2025-08-05 | VOLKSWAGEN GROUP OF AMERICA, INC. | Pass | Local |
| 2025-07-24 | CHATTANOOGA GAS COMPANY | Pass | Local |
| 2025-07-24 | CHATTANOOGA GAS COMPANY | Pass | Local |
| 2025-07-24 | CHATTANOOGA GAS COMPANY | Pass | Local |
| 2025-04-30 | SIGNAL MOUNTAIN CEMENT COMPANY D/B/A BUZZI UNICEM USA | Pass | Local |
| 2025-04-30 | SIGNAL MOUNTAIN CEMENT COMPANY D/B/A BUZZI UNICEM USA | Pass | Local |
| 2025-04-18 | MUELLER CO. LLC — high-priority violation on file | Pass | Local |
| 2025-04-16 | MUELLER CO. LLC — high-priority violation on file | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.