EPA Air · stack tests by county and year
Air-emissions stack tests in Linn County, Iowa, 2026
- 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 Linn 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 Linn County facility page.
Linn County, Iowa, 2026
Air-emissions stack tests in Linn County, other years
Air-emissions stack tests recorded in Linn County, Iowa, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-04-10 | GENERAL MILLS OPERATIONS, INC. — high-priority violation on file | Fail | Local |
| 2026-03-06 | CARGILL INC-CEDAR RAPIDS_SW_SOYBEAN | Pass | Local |
| 2026-03-06 | CARGILL INC-CEDAR RAPIDS_SW_SOYBEAN | Pass | Local |
| 2026-03-06 | CARGILL INC-CEDAR RAPIDS_SW_SOYBEAN | Pass | Local |
| 2026-03-03 | ADM CORN PROCESSING | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.