EPA Air · by county
Air-emissions sources in Douglas County, Wisconsin
- 10Facilities
Every stationary source in Douglas County, Wisconsin that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
By emissions classification in Douglas County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Douglas County, 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 25
- 2025 — inspections 38
- 2024 — inspections 18
- 2023 — inspections 16
- 2022 — inspections 3
- 2021 — inspections 13
- 2020 — inspections 4
- 2019 — inspections 5
- 2018 — inspections 3
- 2017 — inspections 7
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| BNSF RAILWAY-ALLOUEZ YARD | No | |
| ENBRIDGE SUPERIOR TERMINAL | Major source | No |
| FERADYNE OUTDOORS | Major source | No |
| GENERAL MILLS OPERATIONS LLC | Synthetic minor source | No |
| GRAYMONT (WI) LLC | Major source | Yes |
| MOCCASIN MIKE SANITARY LANDFILL | Major source | No |
| SUPERIOR GENERATING STATION | Not applicable | No |
| SUPERIOR REFINING COMPANY LLC | Major source | Yes |
| SUPERIOR REFINING COMPANY LLC - PETROLEUM BULK STATIONS AND TERMINALS | Major source | No |
| WI DOA / UW-SUPERIOR POWER PLANT | Synthetic minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.