EPA Air · stack tests by county and year
Air-emissions stack tests in Pennington County, South Dakota, 2025
- 13Stack 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 Pennington County, South Dakota 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 Pennington County facility page.
Pennington County, South Dakota, 2025
Air-emissions stack tests in Pennington County, other years
Air-emissions stack tests recorded in Pennington County, South Dakota, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-11 | PETE LIEN & SONS, INC. MAIN PLANT | Pass | State |
| 2025-10-21 | CITY OF RAPID CITY SOLID WASTE DIVISION | Pass | State |
| 2025-09-10 | BLACK HILLS POWER, INC. (LANGE) | Pass | State |
| 2025-06-19 | GCC DACOTAH — high-priority violation on file | Pass | State |
| 2025-06-17 | BLACK HILLS POWER, INC. (LANGE) | Pass | State |
| 2025-06-17 | GCC DACOTAH — high-priority violation on file | Pass | State |
| 2025-06-17 | GCC DACOTAH — high-priority violation on file | Pass | State |
| 2025-05-30 | GCC DACOTAH — high-priority violation on file | Pass | State |
| 2025-05-14 | PETE LIEN & SONS, INC. MAIN PLANT | Pass | State |
| 2025-05-13 | PETE LIEN & SONS, INC. MAIN PLANT | Pass | State |
| 2025-05-07 | MIDWEST MANUFACTURING DBA DAKOTA PANEL | Pass | State |
| 2025-04-08 | PETE LIEN & SONS, INC. MAIN PLANT | Pass | State |
| 2025-02-05 | BLACK HILLS POWER, INC. - BEN FRENCH | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.