Velarion Records

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EPA Air · stack tests by county and year

Air-emissions stack tests in Polk County, Iowa, 2026

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

Air-emissions stack tests in Polk County, other years

Air-emissions stack tests recorded in Polk County, Iowa, 2026

DateFacilityKindAgency
2026-06-18MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATAPassLocal
2026-06-15KANSAS CITY SAUSAGE, LLC , DBA PINE RIDGE FARMSPassLocal
2026-06-11MIDAMERICAN ENERGY COMPANY SYCAMORE CTSPassLocal
2026-04-30MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATAFailLocal
2026-04-29MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATAPassLocal
2026-04-15DES MOINES METRO WRAPassLocal
2026-04-15DES MOINES METRO WRAPassLocal
2026-04-14DES MOINES METRO WRAPassLocal
2026-04-14DES MOINES METRO WRAPassLocal
2026-04-03MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATAPendingLocal
2026-04-02MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATAPendingLocal
2026-04-02MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATAPendingLocal
2026-01-22MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATAPassLocal
2026-01-22MICROSOFT CORPORATION - WILLOW CREEK/GINGER EAST DATAPassLocal

Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.