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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in Hamilton county, TN, in 2025. It lists 16 stack tests recorded in 2025.