EPA Air · stack tests by county and year
Air-emissions stack tests in St. Louis County, Minnesota, 2021
- 20Stack 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 2021. 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, 2021
Air-emissions stack tests in St. Louis County, other years
Air-emissions stack tests recorded in St. Louis County, Minnesota, 2021
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2021-11-18 | UNITED TACONITE LLC - FAIRLANE PLANT | Pass | State |
| 2021-11-04 | ME GLOBAL INC | Pass | State |
| 2021-10-13 | UNITED TACONITE LLC - FAIRLANE PLANT | Pass | State |
| 2021-09-21 | HIBBING TACONITE CO | Pass | State |
| 2021-09-16 | US STEEL CORP - MINNTAC | Pass | State |
| 2021-09-14 | HIBBING PUBLIC UTILITIES COMMISSION | Pass | State |
| 2021-09-13 | UNITED TACONITE LLC - FAIRLANE PLANT | Pass | State |
| 2021-07-28 | CLEVELAND-CLIFFS MINORCA MINE INC | Pass | State |
| 2021-07-12 | CLEVELAND-CLIFFS MINORCA MINE INC | Pass | State |
| 2021-07-01 | WISCONSIN CENTRAL LTD | Pass | State |
| 2021-06-08 | UNITED TACONITE LLC - FAIRLANE PLANT | Pass | State |
| 2021-05-19 | MINNESOTA POWER - HIBBARD RENEWABLE ENERGY CENTER | Pass | State |
| 2021-05-11 | NORTHLAND CONSTRUCTORS OF DULUTH - NONMETALLIC | Pass | State |
| 2021-05-08 | UNITED STATES STEEL CORP - KEETAC | Pass | State |
| 2021-04-20 | HIBBING TACONITE CO | Pass | State |
| 2021-04-14 | ME GLOBAL INC | Pass | State |
| 2021-04-13 | US STEEL CORP - MINNTAC | Pass | State |
| 2021-03-24 | UNITED STATES STEEL CORP - KEETAC | N/A | State |
| 2021-02-01 | VIRGINIA DEPARTMENT OF PUBLIC UTILITIES — high-priority violation on file | Pass | State |
| 2021-01-26 | HIBBING PUBLIC UTILITIES COMMISSION | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.