EPA Air · stack tests by county and year
Air-emissions stack tests in Brookings County, South Dakota, 2025
- 5Stack 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 Brookings 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 Brookings County facility page.
Brookings County, South Dakota, 2025
Air-emissions stack tests in Brookings County, other years
Air-emissions stack tests recorded in Brookings County, South Dakota, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-02 | VALERO RENEWABLE FUELS COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-09-24 | SOLVENTUM US LLC — high-priority violation on file | Pass | State |
| 2025-09-10 | BASIN ELECTRIC - DEER CREEK STATION | Pass | State |
| 2025-08-19 | VALERO RENEWABLE FUELS COMPANY LLC — high-priority violation on file | Pass | State |
| 2025-01-28 | SOUTH DAKOTA SOYBEAN PROCESSORS - VOLGA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.