EPA Air · stack tests by county and year
Air-emissions stack tests in St. Louis County, Minnesota, 2024
- 19Stack 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 St. Louis County, Minnesota during 2024. 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 St. Louis County facility page.
St. Louis County, Minnesota, 2024
- Inspections 13
Air-emissions stack tests in St. Louis County, other years
Air-emissions stack tests recorded in St. Louis County, Minnesota, 2024
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2024-12-17 | WLSSD WWTP | Pass | State |
| 2024-12-03 | DULUTH ENERGY SYSTEMS | Pass | State |
| 2024-11-25 | ME GLOBAL INC | Pass | State |
| 2024-10-08 | HIBBING PUBLIC UTILITIES COMMISSION | Fail | State |
| 2024-10-01 | WISCONSIN CENTRAL LTD | Pass | State |
| 2024-09-23 | UNITED TACONITE LLC - FAIRLANE PLANT | Pass | State |
| 2024-09-09 | UNITED STATES STEEL CORP - KEETAC | Pass | State |
| 2024-08-22 | NORTHLAND CONSTRUCTORS OF DULUTH - PLANT 21 | Pass | State |
| 2024-07-22 | CLEVELAND-CLIFFS MINORCA MINE INC | Pass | State |
| 2024-06-21 | US STEEL CORP - MINNTAC | Pass | State |
| 2024-06-03 | ME GLOBAL INC | Pass | State |
| 2024-05-22 | UNITED STATES STEEL CORP - KEETAC | Pass | State |
| 2024-05-21 | HIBBING TACONITE CO | Pass | State |
| 2024-04-25 | US STEEL CORP - MINNTAC | Pass | State |
| 2024-04-17 | HIBBING TACONITE CO | N/A | State |
| 2024-04-08 | US STEEL CORP - MINNTAC | Pass | State |
| 2024-03-12 | UNITED TACONITE LLC - FAIRLANE PLANT | N/A | State |
| 2024-02-14 | MINNESOTA POWER - LASKIN ENERGY CENTER | Pass | State |
| 2024-01-22 | UNITED TACONITE LLC - FAIRLANE PLANT | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.