EPA Air · stack tests by county and year
Air-emissions stack tests in Hamilton County, Tennessee, 2026
- 4Stack 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 2026. 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, 2026
Air-emissions stack tests in Hamilton County, other years
Air-emissions stack tests recorded in Hamilton County, Tennessee, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-04-24 | MUELLER CO. LLC — high-priority violation on file | Pass | Local |
| 2026-04-23 | MUELLER CO. LLC — high-priority violation on file | Pass | Local |
| 2026-04-01 | SIGNAL MOUNTAIN CEMENT COMPANY D/B/A BUZZI UNICEM USA | Pass | Local |
| 2026-04-01 | SIGNAL MOUNTAIN CEMENT COMPANY D/B/A BUZZI UNICEM USA | 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 for Hamilton county, TN, in 2026. Stack tests recorded in 2026 for this county: 4.