EPA Air · stack tests by county and year
Air-emissions stack tests in Cook County, Illinois, 2025
- 18Stack 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 2025. 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, 2025
Air-emissions stack tests in Cook County, other years
Air-emissions stack tests recorded in Cook County, Illinois, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-11 | ALLIED TUBE & CONDUIT CORP | Pass | State |
| 2025-09-17 | BWAY CORP | Pass | State |
| 2025-09-16 | BWAY CORP | Pass | State |
| 2025-09-12 | US ENERGY MT PROSPECT TERMINAL | Pass | State |
| 2025-09-10 | KINDER MORGAN LIQUIDS TERMINALS LLC | Pass | State |
| 2025-09-05 | KINDER MORGAN LIQUID TERMINALS LP | Pass | State |
| 2025-09-04 | KINDER MORGAN LIQUIDS TERMINALS LLC | Pass | State |
| 2025-06-20 | CHRIST HOSPITAL & MEDICAL CENTER | Fail | State |
| 2025-06-20 | CHRIST HOSPITAL & MEDICAL CENTER | Fail | State |
| 2025-05-16 | HEIDELBERG MATERIALS MIDWEST AGG INC | Pass | State |
| 2025-04-02 | A FINKL & SONS CO | Pass | State |
| 2025-04-02 | A FINKL & SONS CO | Pass | State |
| 2025-03-25 | INGREDION INC — high-priority violation on file | Fail | State |
| 2025-03-24 | ADVOCATE ILLINOIS MASONIC MEDICAL CENTER | Pass | State |
| 2025-03-24 | ADVOCATE ILLINOIS MASONIC MEDICAL CENTER | Pass | State |
| 2025-01-30 | NORTHWEST COMMUNITY HOSPITAL | Pass | State |
| 2025-01-30 | NORTHWEST COMMUNITY HOSPITAL | Pass | State |
| 2025-01-29 | SYENSQO USA LLC | Pending | U.S. EPA |
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 Clean Air Act facilities in the EPA air register with stack tests in Cook county, IL, in 2025. Stack tests recorded in 2025: 18.