EPA Air · stack tests by county and year
Air-emissions stack tests in Polk County, Iowa, 2026
- 14Stack 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 Polk 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 Polk County facility page.
Polk County, Iowa, 2026
- Inspections 129
Air-emissions stack tests in Polk County, other years
Air-emissions stack tests recorded in Polk County, Iowa, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-06-18 | MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATA | Pass | Local |
| 2026-06-15 | KANSAS CITY SAUSAGE, LLC , DBA PINE RIDGE FARMS | Pass | Local |
| 2026-06-11 | MIDAMERICAN ENERGY COMPANY SYCAMORE CTS | Pass | Local |
| 2026-04-30 | MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATA | Fail | Local |
| 2026-04-29 | MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATA | Pass | Local |
| 2026-04-15 | DES MOINES METRO WRA | Pass | Local |
| 2026-04-15 | DES MOINES METRO WRA | Pass | Local |
| 2026-04-14 | DES MOINES METRO WRA | Pass | Local |
| 2026-04-14 | DES MOINES METRO WRA | Pass | Local |
| 2026-04-03 | MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATA | Pending | Local |
| 2026-04-02 | MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATA | Pending | Local |
| 2026-04-02 | MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATA | Pending | Local |
| 2026-01-22 | MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATA | Pass | Local |
| 2026-01-22 | MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.