EPA Air · stack tests by county and year
Air-emissions stack tests in Cerro Gordo County, Iowa, 2025
- 15Stack 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 Cerro Gordo County, Iowa 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 Cerro Gordo County facility page.
Cerro Gordo County, Iowa, 2025
Air-emissions stack tests in Cerro Gordo County, other years
Air-emissions stack tests recorded in Cerro Gordo County, Iowa, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-08-26 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | Pass | State |
| 2025-07-23 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | Pass | State |
| 2025-06-05 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Pass | State |
| 2025-06-04 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Pass | State |
| 2025-06-03 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Pass | State |
| 2025-06-03 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Pass | State |
| 2025-04-25 | LANDFILL OF NORTH IOWA | Pass | State |
| 2025-03-06 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | Pass | State |
| 2025-02-27 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | Pass | State |
| 2025-02-07 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | Pass | State |
| 2025-01-31 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Pass | State |
| 2025-01-30 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Pass | State |
| 2025-01-30 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Pass | State |
| 2025-01-29 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Fail | State |
| 2025-01-28 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.