EPA Air · stack tests by state and year

Air-emissions stack tests in Indiana, 2026

1,010Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Indiana during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.

Counties in Indiana, 2026

Indiana, other years

Air-emissions stack tests recorded in Indiana, 2026

Date	Facility	Where	Kind	Agency
2026-07-02	GREEN COW POWER LLC — high-priority violation on file	GOSHEN, Elkhart, IN	Pass	State
2026-07-02	GREEN COW POWER LLC — high-priority violation on file	GOSHEN, Elkhart, IN	Pass	State
2026-07-02	GREEN COW POWER LLC — high-priority violation on file	GOSHEN, Elkhart, IN	Pass	State
2026-07-02	GREEN COW POWER LLC — high-priority violation on file	GOSHEN, Elkhart, IN	Pass	State
2026-07-01	ALLIED TUBE AND CONDUIT CORPORATION	MERRILLVILLE, Lake, IN	Pass	State
2026-07-01	ALLIED TUBE AND CONDUIT CORPORATION	MERRILLVILLE, Lake, IN	Pass	State
2026-07-01	R MIX — high-priority violation on file	CAMBRIDGE CITY, Wayne, IN	Pass	State
2026-07-01	R MIX — high-priority violation on file	CAMBRIDGE CITY, Wayne, IN	Pass	State
2026-07-01	R MIX — high-priority violation on file	CAMBRIDGE CITY, Wayne, IN	Pass	State
2026-07-01	R MIX — high-priority violation on file	CAMBRIDGE CITY, Wayne, IN	Pass	State
2026-06-30	RIETH RILEY CONSTRUCTION COMPANY INCORPORATED	SOUTH BEND, St. Joseph, IN	Pass	State
2026-06-30	RIETH RILEY CONSTRUCTION COMPANY INCORPORATED	SOUTH BEND, St. Joseph, IN	Pass	State
2026-06-30	RIETH RILEY CONSTRUCTION COMPANY INCORPORATED	SOUTH BEND, St. Joseph, IN	Pass	State
2026-06-30	RIETH RILEY CONSTRUCTION COMPANY INCORPORATED	SOUTH BEND, St. Joseph, IN	Pass	State
2026-06-30	LYONDELLBASELL ADVANCED POLYMERS INCORPORATED — high-priority violation on file	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-06-30	LYONDELLBASELL ADVANCED POLYMERS INCORPORATED — high-priority violation on file	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-06-30	LYONDELLBASELL ADVANCED POLYMERS INCORPORATED — high-priority violation on file	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-06-30	LYONDELLBASELL ADVANCED POLYMERS INCORPORATED — high-priority violation on file	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-06-26	MIDWEST AEROSPACE LLC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-26	MIDWEST AEROSPACE LLC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-26	MIDWEST AEROSPACE LLC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-26	MIDWEST AEROSPACE LLC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-26	LYONDELLBASELL ADVANCED POLYMERS INCORPORATED — high-priority violation on file	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-06-26	LYONDELLBASELL ADVANCED POLYMERS INCORPORATED — high-priority violation on file	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-06-26	LYONDELLBASELL ADVANCED POLYMERS INCORPORATED — high-priority violation on file	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-06-26	LYONDELLBASELL ADVANCED POLYMERS INCORPORATED — high-priority violation on file	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-06-26	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-06-26	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-06-26	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Fail	State
2026-06-26	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-06-26	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Fail	State
2026-06-26	BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file	REYNOLDS, White, IN	Pass	State
2026-06-26	BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file	REYNOLDS, White, IN	Pass	State
2026-06-26	BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file	REYNOLDS, White, IN	Pass	State
2026-06-25	BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file	WHITING, Lake, IN	Pass	State
2026-06-25	BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file	WHITING, Lake, IN	Pass	State
2026-06-25	BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file	WHITING, Lake, IN	Pass	State
2026-06-25	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	NEWBURGH, Warrick, IN	Fail	State
2026-06-25	ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-06-25	BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file	REYNOLDS, White, IN	Pass	State
2026-06-25	BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file	REYNOLDS, White, IN	Pass	State
2026-06-25	BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file	REYNOLDS, White, IN	Pass	State
2026-06-25	BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file	REYNOLDS, White, IN	Pass	State
2026-06-25	BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file	REYNOLDS, White, IN	Pass	State
2026-06-25	BIO TOWN BIOGAS LLC & BIO TOWN AG INCORPORATED — high-priority violation on file	REYNOLDS, White, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	POET BIOREFINING PORTLAND LLC	PORTLAND, Jay, IN	Pass	State
2026-06-24	ALBANESE CONFECTIONERY GROUP INC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-24	ALBANESE CONFECTIONERY GROUP INC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-24	ALBANESE CONFECTIONERY GROUP INC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-24	ALBANESE CONFECTIONERY GROUP INC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-24	US STEEL CORPORATION GARY WORKS — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-06-24	US STEEL CORPORATION GARY WORKS — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-06-24	US STEEL CORPORATION GARY WORKS — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-06-24	SAINT MARY MEDICAL CENTER — high-priority violation on file	HOBART, Lake, IN	Pass	State
2026-06-24	HOWARD MATERIALS LLC — high-priority violation on file	INDIANAPOLIS, Marion, IN	Pass	State
2026-06-24	HOWARD MATERIALS LLC — high-priority violation on file	INDIANAPOLIS, Marion, IN	Pass	State
2026-06-24	HOWARD MATERIALS LLC — high-priority violation on file	INDIANAPOLIS, Marion, IN	Pass	State
2026-06-24	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Fail	State
2026-06-24	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-06-24	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Fail	State
2026-06-23	PADGETT INCORPORATED	NEW ALBANY, Floyd, IN	Pass	State
2026-06-23	PADGETT INCORPORATED	NEW ALBANY, Floyd, IN	Pass	State
2026-06-23	PADGETT INCORPORATED	NEW ALBANY, Floyd, IN	Pass	State
2026-06-23	ALBANESE CONFECTIONERY GROUP INC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-23	ALBANESE CONFECTIONERY GROUP INC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-23	ALBANESE CONFECTIONERY GROUP INC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-23	ALBANESE CONFECTIONERY GROUP INC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-06-23	US STEEL CORPORATION GARY WORKS — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-06-23	US STEEL CORPORATION GARY WORKS — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-06-23	US STEEL CORPORATION GARY WORKS — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-06-19	CARB RITE COMPANY	SCHNEIDER, Lake, IN	Pass	State
2026-06-19	CARB RITE COMPANY	SCHNEIDER, Lake, IN	Pass	State
2026-06-19	CARB RITE COMPANY	SCHNEIDER, Lake, IN	Pass	State
2026-06-19	CARB RITE COMPANY	SCHNEIDER, Lake, IN	Pass	State
2026-06-18	NIBLOCK EXCAVATING INC	BRISTOL, Elkhart, IN	Pass	State
2026-06-18	SOUTH SHORE SLAG LLC CONTRACTOR OF US STEEL CORPORATION GARY	GARY, Lake, IN	Pass	State
2026-06-18	RIETH RILEY ASPHALT PLANT NO 366	LA PORTE, LaPorte, IN	Pass	State
2026-06-18	RIETH RILEY ASPHALT PLANT NO 366	LA PORTE, LaPorte, IN	Pass	State
2026-06-18	RIETH RILEY ASPHALT PLANT NO 366	LA PORTE, LaPorte, IN	Pass	State
2026-06-18	RIETH RILEY ASPHALT PLANT NO 366	LA PORTE, LaPorte, IN	Pass	State
2026-06-17	HARRISON STEEL CASTINGS COMPANY — high-priority violation on file	ATTICA, Fountain, IN	Pass	State
2026-06-17	SIGECO - FB CULLEY GENERATING STATION	NEWBURGH, Warrick, IN	Pass	State
2026-06-16	US STEEL CORPORATION GARY WORKS — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-06-16	US STEEL CORPORATION GARY WORKS — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-06-16	US STEEL CORPORATION GARY WORKS — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-06-16	US STEEL CORPORATION GARY WORKS — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-06-16	BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file	MORRISTOWN, Shelby, IN	Pass	State
2026-06-16	BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file	MORRISTOWN, Shelby, IN	Pass	State
2026-06-16	BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file	MORRISTOWN, Shelby, IN	Pass	State
2026-06-16	BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file	MORRISTOWN, Shelby, IN	Pass	State
2026-06-16	BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file	MORRISTOWN, Shelby, IN	Pass	State
2026-06-16	BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file	MORRISTOWN, Shelby, IN	Pass	State
2026-06-16	BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file	MORRISTOWN, Shelby, IN	Pass	State

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