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.
Every source’s record in Douglas County
Each of the 8 operating major, synthetic minor and minor sources in Douglas County, Wisconsin has a record page: every source in Douglas County, A to Z.
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
Violations in Douglas County, by year
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity.
Stack tests in Douglas County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 9
- 2025 stack tests 14
- 2024 stack tests 12
- 2023 stack tests 18
- 2022 stack tests 8
- 2021 stack tests 6
- 2020 stack tests 3
- 2019 stack tests 5
- 2018 stack tests 10
- 2017 stack tests 10
Inspections in Douglas County, year by year · Violations in Douglas County, year by year · Stack tests in Douglas County, year by year
Other counties in Wisconsin
Every county in the state with at least three sources on file.
- Ashland County 3
- Barron County 14
- Brown County 51
- Calumet County 8
- Chippewa County 18
- Clark County 4
- Columbia County 9
- Crawford County 5
- Dane County 45
- Dodge County 17
- Dunn County 10
- Eau Claire County 9
- Fond du Lac County 13
- Grant County 9
- Green County 8
- Jackson County 7
- Jefferson County 18
- Juneau County 7
- Kenosha County 16
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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for Douglas county, WI. It lists 10 facilities in Douglas county and 6 major sources.