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.