EPA Air · stack tests by county and year

Air-emissions stack tests in St. Louis County, Minnesota, 2020

26Stack 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 2020. 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, 2020

Air-emissions stack tests in St. Louis County, other years

Air-emissions stack tests recorded in St. Louis County, Minnesota, 2020

Date	Facility	Kind	Agency
2020-12-09	DULUTH ENERGY SYSTEMS	Pass	State
2020-11-17	UNITED TACONITE LLC - FAIRLANE PLANT	Pass	State
2020-11-02	ME GLOBAL INC	Pass	State
2020-09-14	HIBBING TACONITE CO	N/A	State
2020-08-25	HIBBING TACONITE CO	N/A	State
2020-08-12	US STEEL CORP - MINNTAC	Pass	State
2020-08-05	WISCONSIN CENTRAL LTD	Pass	State
2020-07-21	US STEEL CORP - MINNTAC	Pass	State
2020-06-30	KGM CONTRACTORS INC - AGGREGATE PLANT 2 NM	Pass	State
2020-06-25	LOUIS LEUSTEK & SONS INC - NONMETALLIC	Pass	State
2020-06-23	CLEVELAND-CLIFFS MINORCA MINE INC	N/A	State
2020-06-15	UNITED TACONITE LLC - THUNDERBIRD MINE	Pass	State
2020-06-08	MINNESOTA POWER - HIBBARD RENEWABLE ENERGY CENTER	Pass	State
2020-06-01	MINNESOTA POWER - HIBBARD RENEWABLE ENERGY CENTER	Pass	State
2020-04-28	US STEEL CORP - MINNTAC	N/A	State
2020-04-22	HIBBING TACONITE CO	Pass	State
2020-04-16	ME GLOBAL INC	Pass	State
2020-04-14	HIBBING TACONITE CO	Pass	State
2020-04-07	US STEEL CORP - MINNTAC	Pass	State
2020-03-24	UNITED STATES STEEL CORP - KEETAC	Pass	State
2020-03-17	DULUTH ENERGY SYSTEMS	Pass	State
2020-03-05	UNITED TACONITE LLC - FAIRLANE PLANT	Pass	State
2020-03-04	UNITED TACONITE LLC - FAIRLANE PLANT	N/A	State
2020-02-25	HIBBING PUBLIC UTILITIES COMMISSION	Pass	State
2020-02-25	VIRGINIA DEPARTMENT OF PUBLIC UTILITIES — high-priority violation on file	Pass	State
2020-01-13	HIBBING PUBLIC UTILITIES COMMISSION	Fail	State

Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.