EPA Air · stack tests by county and year

Air-emissions stack tests in Cook County, Illinois, 2023

25Stack 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 Cook County, Illinois 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 Cook County facility page.

Cook County, Illinois, 2023

Air-emissions stack tests in Cook County, other years

Air-emissions stack tests recorded in Cook County, Illinois, 2023

Date	Facility	Kind	Agency
2023-12-05	WR GRACE	Fail	State
2023-12-05	WR GRACE	Pass	State
2023-12-05	WR GRACE	Pass	State
2023-12-01	WR GRACE	Pass	State
2023-11-30	WR GRACE	Pass	State
2023-11-30	WR GRACE	Pass	State
2023-11-30	WR GRACE	Pass	State
2023-11-29	WR GRACE	Pass	State
2023-11-29	WR GRACE	Pass	State
2023-11-29	WR GRACE	Fail	State
2023-11-28	WR GRACE	Pass	State
2023-10-24	H KRAMER & CO — high-priority violation on file	Pass	State
2023-09-20	LUTHERAN GENERAL HOSPITAL	Pass	State
2023-09-12	KOPPERS CARBON MATERIALS LLC — high-priority violation on file	Pass	State
2023-09-01	OWENS-CORNING CORP — high-priority violation on file	Pass	State
2023-08-12	TRIALCO ALUMINUM LLC	Fail	State
2023-07-12	H KRAMER & CO — high-priority violation on file	Pass	State
2023-07-07	MAGNETIC INSPECTION LAB INC	Pass	State
2023-06-08	ALLIED TUBE & CONDUIT CORP	Pass	State
2023-05-17	NOVA CHROME INC	Pass	State
2023-04-06	BEFESA ZINC US INC — high-priority violation on file	Pass	State
2023-03-30	ARDAGH GLASS INC	Pass	State
2023-03-30	ARDAGH GLASS INC	Pass	State
2023-02-14	ADVOCATE ILLINOIS MASONIC MEDICAL CENTER	Pass	State
2023-02-08	KOPPERS CARBON MATERIALS LLC — high-priority violation on file	Pass	State

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