EPA Air · stack tests by county and year
Air-emissions stack tests in Carlton County, Minnesota, 2025
- 10Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Carlton County, Minnesota during 2025. 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 Carlton County facility page.
Carlton County, Minnesota, 2025
Air-emissions stack tests in Carlton County, other years
Air-emissions stack tests recorded in Carlton County, Minnesota, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-02 | SAPPI CLOQUET LLC | Pass | State |
| 2025-10-14 | SAPPI CLOQUET LLC | Pass | State |
| 2025-08-12 | SAPPI CLOQUET LLC | Pass | State |
| 2025-08-05 | USG INTERIORS LLC - CLOQUET MN | Pass | State |
| 2025-07-15 | SAPPI CLOQUET LLC | Pass | State |
| 2025-07-07 | ULLAND BROTHERS INC | Pass | State |
| 2025-05-23 | SAPPI CLOQUET LLC | Pass | State |
| 2025-05-21 | SAPPI CLOQUET LLC | Pass | State |
| 2025-05-13 | SPECIALTY MINERALS INC - CLOQUET | Pass | State |
| 2025-04-15 | USG INTERIORS LLC - CLOQUET MN | Fail | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for Carlton county, MN, in 2025. It lists 10 stack tests recorded in 2025.