EPA Air · stack tests by state, industry and year
Primary metal manufacturing (NAICS 3314): stack tests in Montana, 2018
- 4Stack 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 2018 at a Montana source whose primary industry code is NAICS 3314. A facility filing more than one industry code is counted under the first one on its record.
Primary metal manufacturing (NAICS 3314) in Montana, other years
Other industries in Montana, 2018
- Petroleum and coal products manufacturing (NAICS 3241) 85
- Utilities (NAICS 2211) 79
- Oil and gas extraction (NAICS 2111) 36
- Pipeline transportation (NAICS 4862) 34
- Nonmetallic mineral product manufacturing (NAICS 3273) 8
- Food manufacturing (NAICS 3113) 5
- Utilities (NAICS 2212) 3
- Wood product manufacturing (NAICS 3211) 3
Air-emissions stack tests recorded in Montana, 2018
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2018-05-08 | STILLWATER MINING CO SMELTER | COLUMBUS, Stillwater, MT | Pass | State |
| 2018-05-08 | STILLWATER MINING CO SMELTER | COLUMBUS, Stillwater, MT | Pass | State |
| 2018-05-08 | STILLWATER MINING CO SMELTER | COLUMBUS, Stillwater, MT | Pass | State |
| 2018-05-08 | STILLWATER MINING CO SMELTER | COLUMBUS, Stillwater, 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.