EPA Air · by county
Air-emissions sources in Cass County, North Dakota
- 47Facilities
Every stationary source in Cass County, North Dakota 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 Cass County
Each of the 43 operating major, synthetic minor and minor sources in Cass County, North Dakota has a record page: every source in Cass County, A to Z.
By emissions classification in Cass 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 Cass 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.
- 2025 inspections 6
- 2024 inspections 5
- 2023 inspections 5
- 2022 inspections 3
- 2021 inspections 5
- 2019 inspections 7
- 2018 inspections 3
- 2017 inspections 5
Stack tests in Cass County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2025 stack tests 3
- 2024 stack tests 4
- 2023 stack tests 3
- 2020 stack tests 3
- 2019 stack tests 5
- 2017 stack tests 4
Inspections in Cass County, year by year · Stack tests in Cass County, year by year
Other counties in North Dakota
Every county in the state with at least three sources on file.
- Barnes County 4
- Billings County 17
- Bowman County 7
- Burke County 5
- Burleigh County 24
- Dunn County 64
- Grand Forks County 17
- McHenry County 3
- McKenzie County 225
- McLean County 3
- Mercer County 11
- Morton County 14
- Mountrail County 146
- Oliver County 3
- Pembina County 3
- Ramsey County 6
- Richland County 10
- Stark County 21
- Stutsman County 12
Facilities
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 Cass county, ND. It lists 47 facilities in Cass county, including 6 major sources.