EPA Air · stack tests by county and year

Air-emissions stack tests in St. Louis County, Minnesota, 2019

29Stack 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 2019. 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, 2019

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

Air-emissions stack tests recorded in St. Louis County, Minnesota, 2019

Date	Facility	Kind	Agency
2019-12-17	DULUTH ENERGY SYSTEMS	Pass	State
2019-12-17	DULUTH ENERGY SYSTEMS	Pass	State
2019-10-23	UNITED TACONITE LLC - FAIRLANE PLANT	Pass	State
2019-10-16	LOUIS LEUSTEK & SONS INC - NONMETALLIC	Pass	State
2019-10-15	UNITED STATES STEEL CORP - KEETAC	Pass	State
2019-10-10	SOFIDEL AMERICA - DULUTH — high-priority violation on file	Pass	State
2019-09-17	WISCONSIN CENTRAL LTD	Pass	State
2019-09-17	HIBBING TACONITE CO	Pass	State
2019-09-05	US STEEL CORP - MINNTAC	Pass	State
2019-08-30	KGM CONTRACTORS INC - AGGREGATE PLANT 2 NM	Pass	State
2019-07-24	CLEVELAND-CLIFFS MINORCA MINE INC	Pass	State
2019-07-16	NORTHLAND CONSTRUCTORS OF DULUTH - PLANT 42	Pass	State
2019-07-09	CLEVELAND-CLIFFS MINORCA MINE INC	Pass	State
2019-06-12	MINNESOTA POWER - HIBBARD RENEWABLE ENERGY CENTER	Pass	State
2019-06-11	ME GLOBAL INC	Pass	State
2019-06-07	HOOVER CONSTRUCTION CO - NONMETALLIC	Pass	State
2019-06-06	NORTHLAND CONSTRUCTORS OF DULUTH - NONMETALLIC	Pass	State
2019-05-20	HIBBING TACONITE CO	Pass	State
2019-05-16	ULLAND BROTHERS INC - PLANT 3401	Pass	State
2019-04-09	US STEEL CORP - MINNTAC	Pass	State
2019-04-03	US STEEL CORP - MINNTAC	Pass	State
2019-03-26	HIBBING PUBLIC UTILITIES COMMISSION	Pass	State
2019-03-25	MINNESOTA POWER - LASKIN ENERGY CENTER	Pass	State
2019-03-12	UNITED TACONITE LLC - FAIRLANE PLANT	Pass	State
2019-03-12	UNITED TACONITE LLC - FAIRLANE PLANT	Pass	State
2019-02-28	HIBBING PUBLIC UTILITIES COMMISSION	Pass	State
2019-02-26	VIRGINIA DEPARTMENT OF PUBLIC UTILITIES — high-priority violation on file	Pass	State
2019-02-13	UNITED TACONITE LLC - FAIRLANE PLANT	Pass	State
2019-02-11	UNITED TACONITE LLC - FAIRLANE PLANT	N/A	State

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