EPA Air · inspections by county and year
Air-emissions inspections in Marathon County, Wisconsin, 2026
- 43Inspections
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source. Each row below is one inspection recorded against a source in Marathon County, Wisconsin during 2026. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Marathon County facility page.
Marathon County, Wisconsin, 2026
Air-emissions inspections in Marathon County, other years
Air-emissions inspections recorded in Marathon County, Wisconsin, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-09-01 | VIRIDI MARATHON, LLC | FCE On-Site | State |
| 2026-08-14 | MULLINS CHEESE INC — high-priority violation on file | FCE On-Site | State |
| 2026-08-07 | DOMTAR PAPER CO LLC | PCE Off-Site | State |
| 2026-08-03 | 3M CO - GREYSTONE — high-priority violation on file | PCE Off-Site | State |
| 2026-08-03 | WI PUBLIC SERVICE WESTON POWER PLANT | PCE Off-Site | State |
| 2026-08-03 | WI PUBLIC SERVICE WESTON POWER PLANT | PCE Off-Site | State |
| 2026-08-03 | WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file | PCE Off-Site | State |
| 2026-08-03 | WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file | PCE Off-Site | State |
| 2026-07-21 | MARATHON COUNTY LANDFILL | FCE On-Site | State |
| 2026-07-01 | AHLSTROM MOSINEE, LLC — high-priority violation on file | FCE On-Site | State |
| 2026-06-24 | GPI CORP | FCE On-Site | State |
| 2026-06-23 | WAUSAU TILE INC | FCE On-Site | State |
| 2026-06-05 | CRYSTAL FINISHING SYSTEMS INC | FCE On-Site | State |
| 2026-06-05 | CRYSTAL FINISHING SYSTEMS INC - MOSINEE — high-priority violation on file | FCE On-Site | State |
| 2026-05-18 | AHLSTROM MOSINEE, LLC — high-priority violation on file | PCE Off-Site | State |
| 2026-05-04 | KERRY ROTHSCHILD — high-priority violation on file | PCE Off-Site | State |
| 2026-05-04 | SENSORYEFFECTS POWDER SYSTEMS (FORMERLY — high-priority violation on file | PCE Off-Site | State |
| 2026-05-01 | 3M CO - GREYSTONE — high-priority violation on file | PCE Off-Site | State |
| 2026-05-01 | 3M CO WAUSAU PLT — high-priority violation on file | PCE Off-Site | State |
| 2026-04-29 | DOMTAR PAPER CO LLC | PCE Off-Site | State |
| 2026-04-21 | 3M CO - GREYSTONE — high-priority violation on file | PCE Off-Site | State |
| 2026-04-06 | 3M CO - GREYSTONE — high-priority violation on file | PCE Off-Site | State |
| 2026-04-02 | 3M CO - GREYSTONE — high-priority violation on file | PCE Off-Site | State |
| 2026-03-31 | WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file | FCE On-Site | State |
| 2026-03-29 | WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file | PCE Off-Site | State |
| 2026-03-24 | BUCKHORN RNG, LLC | FCE On-Site | State |
| 2026-03-13 | WI PUBLIC SERVICE WESTON POWER PLANT | FCE On-Site | State |
| 2026-03-12 | IMPERIAL INDUSTRIES, INC. | PCE Off-Site | State |
| 2026-03-12 | MARATHON COUNTY LANDFILL | PCE Off-Site | State |
| 2026-02-27 | WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file | PCE Off-Site | State |
| 2026-02-26 | MULLINS CHEESE INC — high-priority violation on file | PCE Off-Site | State |
| 2026-02-24 | WI PUBLIC SERVICE WESTON POWER PLANT | PCE Off-Site | State |
| 2026-02-23 | WI PUBLIC SERVICE WESTON POWER PLANT | PCE Off-Site | State |
| 2026-02-23 | 3M CO WAUSAU PLT — high-priority violation on file | FCE On-Site | State |
| 2026-02-23 | WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file | PCE Off-Site | State |
| 2026-02-06 | 3M CO - GREYSTONE — high-priority violation on file | PCE Off-Site | State |
| 2026-02-06 | WI PUBLIC SERVICE WESTON POWER PLANT | PCE Off-Site | State |
| 2026-02-04 | AHLSTROM MOSINEE, LLC — high-priority violation on file | PCE Off-Site | State |
| 2026-02-04 | MARTH WOOD SHAVINGS SUPPLY INC — high-priority violation on file | PCE Off-Site | State |
| 2026-02-03 | VERITAS STEEL LLC | PCE Off-Site | State |
| 2026-01-30 | WISCONSIN ELECTRIC POWER COMPANY (DBA WE ENERGIES) - ROTHSCHILD BIOMASS COGENERA — high-priority violation on file | PCE Off-Site | State |
| 2026-01-27 | DOMTAR PAPER CO LLC | PCE Off-Site | State |
| 2026-01-23 | WI PUBLIC SERVICE WESTON POWER PLANT | PCE Off-Site | State |
Dates as filed by the agency that recorded the inspection. Figures from EPA’s ICIS-AIR download.