EPA Air · by state and industry
Petroleum and coal products manufacturing (NAICS 3241) air sources in Montana
- 7Facilities
Permitted air-emissions sources in Montana whose primary industry code is NAICS 3241. A facility filing more than one industry code is counted under the first one on its record, so a plant with several lines appears once, under the line EPA lists first.
Inspections of petroleum and coal products manufacturing (naics 3241) in Montana, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 — inspections 4
- 2021 — inspections 3
- 2020 — inspections 3
- 2019 — inspections 7
- 2018 — inspections 4
- 2017 — inspections 7
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| BILLINGS REFINERY | Major source | No |
| BUREAU INDIAN AFFAIRS (BIA) ASPHALT PLNT | Minor source | No |
| CALUMET MONTANA REFINING | Major source | Yes |
| CHS INC REFINERY LAUREL | Major source | No |
| CITY OF WOLF POINT ASPHALT PLANT | Minor source | No |
| PAR MONTANA BILLINGS REFINERY | Major source | No |
| TREASURE STATE CONCRETE, INC. | Minor source | No |
Primary NAICS code as filed on the facility record. Figures from EPA’s ICIS-AIR download.