EPA Air · stack tests by state, industry and year
Nonmetallic mineral product manufacturing (NAICS 3273): stack tests in Montana, 2020
- 10Stack 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 2020 at a Montana source whose primary industry code is NAICS 3273. A facility filing more than one industry code is counted under the first one on its record.
Nonmetallic mineral product manufacturing (NAICS 3273) in Montana, other years
Other industries in Montana, 2020
- Petroleum and coal products manufacturing (NAICS 3241) 64
- Utilities (NAICS 2211) 63
- Pipeline transportation (NAICS 4862) 33
- Oil and gas extraction (NAICS 2111) 28
- Wood product manufacturing (NAICS 3212) 6
- Primary metal manufacturing (NAICS 3314) 3
Air-emissions stack tests recorded in Montana, 2020
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2020-10-12 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | Pass | State |
| 2020-07-28 | TRIDENT | THREE FORKS, Gallatin, MT | Pass | State |
| 2020-07-28 | TRIDENT | THREE FORKS, Gallatin, MT | Pass | State |
| 2020-07-14 | TRIDENT | THREE FORKS, Gallatin, MT | Pass | State |
| 2020-07-14 | TRIDENT | THREE FORKS, Gallatin, MT | Pass | State |
| 2020-06-26 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | Pass | State |
| 2020-06-26 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | Pass | State |
| 2020-06-26 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | Pass | State |
| 2020-06-26 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | Pass | State |
| 2020-01-02 | TRIDENT | THREE FORKS, Gallatin, MT | Pass | State |
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.