EPA Air · stack tests by county and year
Air-emissions stack tests in St. Joseph County, Indiana, 2026
- 12Stack 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. Joseph County, Indiana during 2026. 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. Joseph County facility page.
St. Joseph County, Indiana, 2026
Air-emissions stack tests in St. Joseph County, other years
Air-emissions stack tests recorded in St. Joseph County, Indiana, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-06-30 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | Pass | State |
| 2026-06-30 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | Pass | State |
| 2026-06-30 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | Pass | State |
| 2026-06-30 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | Pass | State |
| 2026-05-29 | CLEVELAND CLIFFS NEW CARLISLE LLC — high-priority violation on file | Pass | State |
| 2026-05-29 | CLEVELAND CLIFFS NEW CARLISLE LLC — high-priority violation on file | Pass | State |
| 2026-04-09 | UNIVERSITY OF NOTRE DAME DU LAC | Pass | State |
| 2026-04-08 | UNIVERSITY OF NOTRE DAME DU LAC | Pass | State |
| 2026-04-08 | UNIVERSITY OF NOTRE DAME DU LAC | Pass | State |
| 2026-03-25 | CLEVELAND CLIFFS NEW CARLISLE LLC — high-priority violation on file | Pass | State |
| 2026-03-25 | CLEVELAND CLIFFS NEW CARLISLE LLC — high-priority violation on file | Pass | State |
| 2026-01-13 | EDCOAT LLC | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.