EPA Air · stack tests by county and year
Air-emissions stack tests in Pueblo County, Colorado, 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 Pueblo County, Colorado 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 Pueblo County facility page.
Pueblo County, Colorado, 2026
Air-emissions stack tests in Pueblo County, other years
Air-emissions stack tests recorded in Pueblo County, Colorado, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-08-06 | BLACK HILLS ELECTRIC GENERATION - PAGS | Pass | State |
| 2026-06-11 | BLACK HILLS ELECTRIC GENERATION - PAGS | Pass | State |
| 2026-06-10 | BLACK HILLS ELECTRIC GENERATION - PAGS | Pass | State |
| 2026-06-09 | BLACK HILLS ELECTRIC GENERATION - PAGS | Pass | State |
| 2026-06-09 | BLACK HILLS ELECTRIC GENERATION - PAGS | Pass | State |
| 2026-06-08 | BLACK HILLS ELECTRIC GENERATION - PAGS | Pass | State |
| 2026-04-16 | GCC RIO GRANDE - PUEBLO CEMENT PLANT — high-priority violation on file | Pass | State |
| 2026-04-14 | GCC RIO GRANDE - PUEBLO CEMENT PLANT — high-priority violation on file | Pass | State |
| 2026-04-14 | BLACK HILLS ELECTRIC GENERATION - PAGS | Pass | State |
| 2026-04-08 | CF & I STEEL L.P. DBA EVRAZ ROCKY MTN ST — high-priority violation on file | Pass | State |
| 2026-04-07 | CF & I STEEL L.P. DBA EVRAZ ROCKY MTN ST — high-priority violation on file | Pass | State |
| 2026-01-23 | CS WIND AMERICA, INC — high-priority violation on file | Fail | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.