EPA Air · by county
Air-emissions sources in Delta County, Michigan
- 35Facilities
Every stationary source in Delta 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 Delta County
Each of the 32 operating major, synthetic minor and minor sources in Delta County, Michigan has a record page: every source in Delta County, A to Z.
By emissions classification in Delta 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 Delta 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 5
- 2025 inspections 6
- 2024 inspections 14
- 2023 inspections 3
- 2022 inspections 13
- 2021 inspections 9
- 2020 inspections 3
- 2019 inspections 15
- 2018 inspections 7
- 2017 inspections 5
Stack tests in Delta County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2025 stack tests 8
- 2023 stack tests 3
- 2022 stack tests 6
- 2020 stack tests 6
- 2018 stack tests 3
- 2017 stack tests 3
Inspections in Delta County, year by year · Stack tests in Delta County, year by year
Other counties in Michigan
Every county in the state with at least three sources on file.
- Berrien County 69
- Branch County 27
- Calhoun County 69
- Cass County 16
- Charlevoix County 17
- Cheboygan County 5
- Chippewa County 15
- Clare County 13
- Clinton County 11
- Crawford County 16
- Dickinson County 24
- Eaton County 22
- Emmet County 8
- Genesee County 55
- Gogebic County 14
- Grand Traverse County 24
- Gratiot County 18
- Hillsdale County 26
- Houghton County 20
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 Delta county, MI. It lists 35 facilities in Delta county, including 4 major sources.