EPA Air · by county
Air-emissions sources in Mason County, Michigan
- 16Facilities
Every stationary source in Mason 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.
By emissions classification in Mason 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 Mason 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 4
- 2025 — inspections 8
- 2024 — inspections 8
- 2023 — inspections 4
- 2022 — inspections 7
- 2021 — inspections 10
- 2020 — inspections 6
- 2018 — inspections 7
- 2017 — inspections 6
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| CARROM COMPANY | Synthetic minor source | No |
| COMPONENT SERVICES | Minor source | No |
| CONSUMERS ENERGY-LUDINGTON PUMPED STORAGE FACILITY | Synthetic minor source | No |
| DTE MICHIGAN POWER, LLC | Major source | No |
| FLORACRAFT CORPORATION | Synthetic minor source | No |
| GREAT LAKES CASTINGS LLC | Major source | No |
| HARSCO RAIL | Minor source | No |
| KAINES WEST MICHIGAN | Minor source | No |
| LAKE MICHIGAN CAR FERRY SERVICE | Minor source | No |
| METALWORKS INC | Minor source | No |
| OCCIDENTAL CHEMICAL CORPORATION | Major source | No |
| OMIMEX - VICTORY 32 FACILITY | Synthetic minor source | No |
| RIETH RILEY CONSTRUCTION COMPANY, INC. | Synthetic minor source | No |
| SARGENT SAND COMPANY | Minor source | No |
| STRAITS STEEL & WIRE | Minor source | No |
| THOROUGHBRED BOAT COMPANY | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.