EPA Air · stack tests by county and year

Air-emissions stack tests in Kossuth County, Iowa, 2025

19Stack 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 Kossuth County, Iowa during 2025. 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 Kossuth County facility page.

Kossuth County, Iowa, 2025

Air-emissions stack tests in Kossuth County, other years

Air-emissions stack tests recorded in Kossuth County, Iowa, 2025

Date	Facility	Kind	Agency
2025-12-12	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-12-12	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-08-14	MURPHY-BROWN LLC	Pass	State
2025-08-08	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-07-10	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-07-10	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-07-09	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-07-09	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-07-08	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Fail	State
2025-06-19	ALGONA MUNICIPAL UTILITIES	Pass	State
2025-06-19	ALGONA MUNICIPAL UTILITIES	Pass	State
2025-06-18	ALGONA MUNICIPAL UTILITIES	Pass	State
2025-06-18	ALGONA MUNICIPAL UTILITIES	Pass	State
2025-05-16	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-05-16	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-04-24	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-04-24	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Pass	State
2025-04-22	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Fail	State
2025-04-22	VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file	Fail	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 Kossuth county, IA, in 2025. It lists 19 stack tests recorded in 2025.