Velarion Records

EPA Air · stack tests by county and year

Air-emissions stack tests in Guthrie County, Iowa, 2024

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 Guthrie County, Iowa during 2024. 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 Guthrie County facility page.

Guthrie County, Iowa, 2024

Air-emissions stack tests in Guthrie County, other years

Air-emissions stack tests recorded in Guthrie County, Iowa, 2024

DateFacilityKindAgency
2024-12-05NORTHERN NATURAL GAS CO-GUTHRE CENTERPassState
2024-07-17POET BIOREFINING - COON RAPIDS, LLCFailState
2024-07-16POET BIOREFINING - COON RAPIDS, LLCPassState
2024-07-11POET BIOREFINING - COON RAPIDS, LLCPassState
2024-07-10POET BIOREFINING - COON RAPIDS, LLCPassState
2024-06-05POET BIOREFINING - MENLO, LLCPassState
2024-01-10POET BIOREFINING - COON RAPIDS, LLCPassState

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

What this page shows

This page covers Clean Air Act facilities in the EPA air register with stack tests in Guthrie county, IA, in 2024. The figures listed are 7 stack tests recorded in 2024.