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

What stands out

Stack tests in St. Louis County, Minnesota, fell from 29 in 2019, the previous year on file, to 26 in 2020.
The county’s file for stack tests holds 10 years of events, from 2017 through 2026.
Its 26 stack tests rank 1st of the 29 county cells in Minnesota for 2020.
Its 26 stack tests are 12.2% of the 213 the state’s file holds for 2020.

Every line is computed by formula from the state’s stored file; nothing is estimated.

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.

What this page shows

This page covers stack tests recorded in 2020 for Clean Air Act facilities in the EPA air register in St. Louis county, MN. It lists 26 stack tests recorded in 2020.