EPA Air · stack tests by county and year
Air-emissions stack tests in St. Louis County, Minnesota, 2023
- 22Stack 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 2023. 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, 2023
- Inspections 16
Air-emissions stack tests in St. Louis County, other years
Air-emissions stack tests recorded in St. Louis County, Minnesota, 2023
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2023-12-12 | US STEEL CORP - MINNTAC | Pass | State |
| 2023-11-03 | SOFIDEL AMERICA - DULUTH — high-priority violation on file | Pass | State |
| 2023-09-26 | US STEEL CORP - MINNTAC | Pass | State |
| 2023-09-19 | US STEEL CORP - MINNTAC | Pass | State |
| 2023-09-19 | HIBBING PUBLIC UTILITIES COMMISSION | Pass | State |
| 2023-08-15 | WISCONSIN CENTRAL LTD | Pass | State |
| 2023-07-28 | KGM CONTRACTORS INC | Pass | State |
| 2023-07-25 | COMPASS MINERALS AMERICA INC | Pass | State |
| 2023-07-20 | MESABI BITUMINOUS INC - SCHLEY MINE B | Pass | State |
| 2023-07-18 | CLEVELAND-CLIFFS MINORCA MINE INC | Pass | State |
| 2023-06-28 | LOUIS LEUSTEK & SONS INC - NONMETALLIC | Pass | State |
| 2023-06-15 | KGM CONTRACTORS INC | Fail | State |
| 2023-05-23 | MINNESOTA POWER - HIBBARD RENEWABLE ENERGY CENTER | Pass | State |
| 2023-05-16 | MINNESOTA POWER - HIBBARD RENEWABLE ENERGY CENTER | Pass | State |
| 2023-05-11 | ME GLOBAL INC | Pass | State |
| 2023-04-26 | NORTHSHORE MINING CO - PETER MITCHELL | Pass | State |
| 2023-04-11 | HIBBING TACONITE CO | Pass | State |
| 2023-04-10 | US STEEL CORP - MINNTAC | Pass | State |
| 2023-03-24 | UNITED TACONITE LLC - FAIRLANE PLANT | Pass | State |
| 2023-03-21 | UNITED STATES STEEL CORP - KEETAC | Pass | State |
| 2023-03-06 | DULUTH ENERGY SYSTEMS | Pass | State |
| 2023-02-03 | 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.