EPA Air · by county
Air-emissions sources in Calhoun County, Michigan
- 69Facilities
Every stationary source in Calhoun County, Michigan 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 Calhoun County
Each of the 68 operating major, synthetic minor and minor sources in Calhoun County, Michigan has a record page: every source in Calhoun County, A to Z.
By emissions classification in Calhoun 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 Calhoun 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 6
- 2025 inspections 17
- 2024 inspections 28
- 2023 inspections 24
- 2022 inspections 22
- 2021 inspections 18
- 2020 inspections 19
- 2019 inspections 23
- 2018 inspections 24
- 2017 inspections 16
Violations in Calhoun 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.
- 2024 violations 4
- 2022 violations 8
- 2021 violations 3
- 2019 violations 6
- 2018 violations 8
- 2017 violations 9
Stack tests in Calhoun County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 4
- 2025 stack tests 15
- 2024 stack tests 8
- 2022 stack tests 8
- 2021 stack tests 9
- 2020 stack tests 7
- 2019 stack tests 10
- 2018 stack tests 9
- 2017 stack tests 7
Inspections in Calhoun County, year by year · Violations in Calhoun County, year by year · Stack tests in Calhoun County, year by year
Other counties in Michigan
Every county in the state with at least three sources on file.
- Allegan County 50
- Alpena County 22
- Antrim County 38
- Arenac County 4
- Baraga County 10
- Barry County 14
- Bay County 31
- Benzie County 4
- Berrien County 69
- Branch County 27
- Cass County 16
- Charlevoix County 17
- Cheboygan County 5
- Chippewa County 15
- Clare County 13
- Clinton County 11
- Crawford County 16
- Delta County 35
- Dickinson County 24
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 Calhoun county, MI. It lists 69 facilities in Calhoun county, of which 9 are major sources.