EPA Air · stack tests by county and year
Air-emissions stack tests in Cerro Gordo County, Iowa, 2026
- 10Stack 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 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 Cerro Gordo County facility page.
Cerro Gordo County, Iowa, 2026
Air-emissions stack tests in Cerro Gordo County, other years
Air-emissions stack tests recorded in Cerro Gordo County, Iowa, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-05-20 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | Pass | State |
| 2026-05-20 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | Fail | State |
| 2026-05-19 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | Fail | State |
| 2026-02-18 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | Fail | State |
| 2026-02-17 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | Fail | State |
| 2026-02-11 | IPL-LIME CREEK COMBUSTION TURBINES | Pass | State |
| 2026-01-08 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Pass | State |
| 2026-01-07 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Fail | State |
| 2026-01-06 | GOLDEN GRAIN ENERGY LLC — high-priority violation on file | Pass | State |
| 2026-01-06 | 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.