EPA Air · stack tests by county and year

Air-emissions stack tests in Butler County, Iowa, 2023

26Stack 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 Butler County, Iowa during 2023. 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 Butler County facility page.

Butler County, Iowa, 2023

Air-emissions stack tests in Butler County, other years

Air-emissions stack tests recorded in Butler County, Iowa, 2023

Date	Facility	Kind	Agency
2023-11-09	POET BIOREFINING - SHELL ROCK, LLC — high-priority violation on file	Pass	State
2023-11-09	POET BIOREFINING - SHELL ROCK, LLC — high-priority violation on file	Pass	State
2023-11-09	POET BIOREFINING - SHELL ROCK, LLC — high-priority violation on file	Pass	State
2023-11-08	SHELL ROCK SOY PROCESSING	Pass	State
2023-09-28	ZINPRO CORP - SHELL ROCK	Incomplete	State
2023-09-26	ZINPRO CORP - SHELL ROCK	Fail	State
2023-09-26	ZINPRO CORP - SHELL ROCK	Pass	State
2023-09-13	POET BIOREFINING - SHELL ROCK, LLC — high-priority violation on file	Fail	State
2023-09-13	POET BIOREFINING - SHELL ROCK, LLC — high-priority violation on file	Fail	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-07-14	SHELL ROCK SOY PROCESSING	Pass	State
2023-06-20	POET BIOREFINING - SHELL ROCK, LLC — high-priority violation on file	Pass	State
2023-06-14	POET BIOREFINING - SHELL ROCK, LLC — high-priority violation on file	Pass	State
2023-06-14	POET BIOREFINING - SHELL ROCK, 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.

What this page shows

This page covers Clean Air Act facilities in the EPA air register with stack tests in Butler county, IA, in 2023. Stack tests recorded in 2023: 26.