EPA Air · by county
Air-emissions sources in Cass County, Michigan
- 16Facilities
Every stationary source in Cass 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 Cass County
Each of the 16 operating major, synthetic minor and minor sources in Cass County, Michigan 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 4
- 2022 inspections 6
- 2020 inspections 5
- 2018 inspections 4
- 2017 inspections 4
Violations in Cass 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 Cass County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
Inspections in Cass County, year by year · Violations in Cass County, year by year · Stack tests in Cass County, year by year
Other counties in Michigan
Every county in the state with at least three sources on file.
- 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
- Calhoun County 69
- Charlevoix County 17
- Cheboygan County 5
- Chippewa County 15
- Clare County 13
- Clinton County 11
- Crawford County 16
- Delta County 35
- Dickinson County 24
- Eaton County 22
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| AMERIWOOD INDUSTRIES | Synthetic minor source | No |
| AUTO CAM | Minor source | No |
| AXIUM GROUP LLC | Synthetic minor source | Yes |
| CASS COUNTY ROAD COMMISSION | Minor source | No |
| CONTECH U.S. LLC | Minor source | No |
| CREATIVE FOAM CORPORATION | Minor source | No |
| FORUS FIBERGLASS INC | Minor source | No |
| HYDRO ALUMINUM METALS USA, LLC | Synthetic minor source | No |
| I.C.G. CASTINGS INC | Minor source | No |
| INDECK NILES LLC | Major source | No |
| LYONS INDUSTRIES | Major source | No |
| MERCURY DISPLACEMENT INDUSTRIES | Minor source | No |
| NATIONAL COOPER PRODUCTS | Minor source | No |
| POSTLE ALUMINUM | Synthetic minor source | No |
| THE CITY OF DOWAGIAC PUBLIC WORKS | Minor source | No |
| VILLAGE CUSTOM PAINT & BODY SHOP INC | 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 Cass county, MI. It lists 16 facilities in Cass county, of which 2 are major sources.