EPA Air · stack tests by state, industry and year
Utilities (NAICS 2212): stack tests in Tennessee, 2025
- 5Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a Tennessee source whose primary industry code is NAICS 2212. A facility filing more than one industry code is counted under the first one on its record.
Other industries in Tennessee, 2025
- Chemical manufacturing (NAICS 3251) 27
- Utilities (NAICS 2211) 27
- Petroleum and coal products manufacturing (NAICS 3241) 16
- Pipeline transportation (NAICS 4862) 11
- Waste management and remediation (NAICS 5622) 8
- Nonmetallic mineral product manufacturing (NAICS 3273) 8
- Electrical equipment and appliance manufacturing (NAICS 3359) 5
- Primary metal manufacturing (NAICS 3315) 5
- Primary metal manufacturing (NAICS 3313) 5
- Paper manufacturing (NAICS 3221) 5
- Primary metal manufacturing (NAICS 3314) 4
- Food manufacturing (NAICS 3112) 3
- Nonmetallic mineral product manufacturing (NAICS 3271) 3
- Primary metal manufacturing (NAICS 3311) 3
Air-emissions stack tests recorded in Tennessee, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-07-24 | CHATTANOOGA GAS COMPANY | CHATTANOOGA, Hamilton, TN | Pass | Local |
| 2025-07-24 | CHATTANOOGA GAS COMPANY | CHATTANOOGA, Hamilton, TN | Pass | Local |
| 2025-07-24 | CHATTANOOGA GAS COMPANY | CHATTANOOGA, Hamilton, TN | Pass | Local |
| 2025-04-30 | COLUMBIA GULF TRANSMISSION, LLC | NASHVILLE, Davidson, TN | Pass | Local |
| 2025-04-30 | COLUMBIA GULF TRANSMISSION, LLC | NASHVILLE, Davidson, TN | Pass | Local |
Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.