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
2026-03-19	HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file	MITCHELL, Lawrence, IN	Pass	State
2026-03-19	HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file	MITCHELL, Lawrence, IN	Pass	State
2026-03-18	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-03-18	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-03-18	THE ANDERSONS RENEWABLES LLC — high-priority violation on file	LOGANSPORT, Cass, IN	Pass	State
2026-03-18	DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION	EDWARDSPORT, Knox, IN	Pass	State
2026-03-18	DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-18	DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-18	DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-18	DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-18	DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-18	DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-18	DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-18	DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-18	CARMEUSE LIME INCORPORATED — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-03-18	CARMEUSE LIME INCORPORATED — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-03-18	CARMEUSE LIME INCORPORATED — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-03-18	CARMEUSE LIME INCORPORATED — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-03-18	DUKE ENERGY INDIANA LLC CAYUGA GENERATING STATION — high-priority violation on file	CAYUGA, Vermillion, IN	Pass	State
2026-03-18	DUKE ENERGY INDIANA LLC CAYUGA GENERATING STATION — high-priority violation on file	CAYUGA, Vermillion, IN	Pass	State
2026-03-17	CARMEUSE LIME INCORPORATED — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-03-17	CARMEUSE LIME INCORPORATED — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-03-17	CARMEUSE LIME INCORPORATED — high-priority violation on file	GARY, Lake, IN	Pass	State
2026-03-17	DUKE ENERGY INDIANA LLC CAYUGA GENERATING STATION — high-priority violation on file	CAYUGA, Vermillion, IN	Pass	State
2026-03-17	DUKE ENERGY INDIANA LLC CAYUGA GENERATING STATION — high-priority violation on file	CAYUGA, Vermillion, IN	Pass	State
2026-03-16	C & D TECHNOLOGIES INC	ATTICA, Fountain, IN	Pass	State
2026-03-16	C & D TECHNOLOGIES INC	ATTICA, Fountain, IN	Pass	State
2026-03-16	ZIONSVILLE COMPRESSOR STATION / PANHANDLE EASTERN PIPE LINE — high-priority violation on file	INDIANAPOLIS, Marion, IN	Pass	State
2026-03-16	ZIONSVILLE COMPRESSOR STATION / PANHANDLE EASTERN PIPE LINE — high-priority violation on file	INDIANAPOLIS, Marion, IN	Pass	State
2026-03-16	ZIONSVILLE COMPRESSOR STATION / PANHANDLE EASTERN PIPE LINE — high-priority violation on file	INDIANAPOLIS, Marion, IN	Pass	State
2026-03-12	KNAUF INSULATION INCORPORATED — high-priority violation on file	SHELBYVILLE, Shelby, IN	Pass	State
2026-03-11	RAYBESTOS POWERTRAIN LLC — high-priority violation on file	CRAWFORDSVILLE, Montgomery, IN	Pass	State
2026-03-10	KNAUF INSULATION INCORPORATED — high-priority violation on file	SHELBYVILLE, Shelby, IN	Pass	State
2026-03-10	KNAUF INSULATION INCORPORATED — high-priority violation on file	SHELBYVILLE, Shelby, IN	Pass	State
2026-03-10	KNAUF INSULATION INCORPORATED — high-priority violation on file	SHELBYVILLE, Shelby, IN	Pass	State
2026-03-10	KNAUF INSULATION INCORPORATED — high-priority violation on file	SHELBYVILLE, Shelby, IN	Pass	State
2026-03-10	TATE & LYLE SOLUTIONS USA LLC — high-priority violation on file	LAFAYETTE, Tippecanoe, IN	Pass	State
2026-03-08	BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-03-08	BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-03-08	BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-03-08	BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-03-08	BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-03-06	ZIMMER BIOMET INC. — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-06	ZIMMER BIOMET INC. — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-06	ZIMMER BIOMET INC. — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-06	ZIMMER BIOMET INC. — high-priority violation on file	WARSAW, Kosciusko, IN	Pass	State
2026-03-06	BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-03-06	BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-03-06	BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-03-06	BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-03-06	BUILDING MATERIALS MANUFACTURING LLC — high-priority violation on file	MOUNT VERNON, Posey, IN	Pass	State
2026-03-05	DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION	EDWARDSPORT, Knox, IN	Pass	State
2026-03-03	ADM GRAIN COMPANY LOGANSPORT TERMINAL	LOGANSPORT, Cass, IN	Pass	State
2026-03-02	BUNGE NORTH AMERICA EAST LLC	DECATUR, Adams, IN	Pass	State
2026-03-02	BUNGE NORTH AMERICA EAST LLC	DECATUR, Adams, IN	Pass	State
2026-03-02	BUNGE NORTH AMERICA EAST LLC	DECATUR, Adams, IN	Pass	State
2026-03-02	BUNGE NORTH AMERICA EAST LLC	DECATUR, Adams, IN	Pass	State
2026-03-02	BUNGE NORTH AMERICA EAST LLC	DECATUR, Adams, IN	Pass	State
2026-03-02	BUNGE NORTH AMERICA EAST LLC	DECATUR, Adams, IN	Pass	State
2026-03-02	BUNGE NORTH AMERICA EAST LLC	DECATUR, Adams, IN	Pass	State
2026-03-02	BUNGE NORTH AMERICA EAST LLC	DECATUR, Adams, IN	Pass	State
2026-02-28	NLMK INDIANA — high-priority violation on file	PORTAGE, Porter, IN	Pass	State
2026-02-28	NLMK INDIANA — high-priority violation on file	PORTAGE, Porter, IN	Pass	State
2026-02-28	NLMK INDIANA — high-priority violation on file	PORTAGE, Porter, IN	Pass	State
2026-02-28	NLMK INDIANA — high-priority violation on file	PORTAGE, Porter, IN	Pass	State
2026-02-27	CITY OF FORT WAYNE THREE RIVERS FILTRATION PLANT — high-priority violation on file	FORT WAYNE, Allen, IN	Pass	State
2026-02-27	CITY OF FORT WAYNE THREE RIVERS FILTRATION PLANT — high-priority violation on file	FORT WAYNE, Allen, IN	Pass	State
2026-02-24	GRAIN PROCESSING CORPORATION — high-priority violation on file	WASHINGTON, Daviess, IN	Pass	State
2026-02-24	GENERAL MOTORS LLC	BEDFORD, Lawrence, IN	Pass	State
2026-02-24	GENERAL MOTORS LLC	BEDFORD, Lawrence, IN	Pass	State
2026-02-24	GENERAL MOTORS LLC	BEDFORD, Lawrence, IN	Pass	State
2026-02-24	GENERAL MOTORS LLC	BEDFORD, Lawrence, IN	Pass	State
2026-02-24	GENERAL MOTORS LLC	BEDFORD, Lawrence, IN	Pass	State
2026-02-18	CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file	EAST CHICAGO, Lake, IN	Pass	State
2026-02-18	CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file	EAST CHICAGO, Lake, IN	Pass	State
2026-02-17	C & D TECHNOLOGIES INC	ATTICA, Fountain, IN	Pass	State
2026-02-17	C & D TECHNOLOGIES INC	ATTICA, Fountain, IN	Pass	State
2026-02-17	GEORGIA PACIFIC GYPSUM LLC — high-priority violation on file	WHEATFIELD, Jasper, IN	Pass	State
2026-02-13	MIDWEST AEROSPACE LLC — high-priority violation on file	MERRILLVILLE, Lake, IN	Pass	State
2026-02-12	ROLLS ROYCE CORPORATION	INDIANAPOLIS, Marion, IN	Pass	State
2026-02-12	ROLLS ROYCE CORPORATION	INDIANAPOLIS, Marion, IN	Pass	State
2026-02-12	INDIANA UNIVERSITY	BLOOMINGTON, Monroe, IN	Pass	State
2026-02-12	INDIANA UNIVERSITY	BLOOMINGTON, Monroe, IN	Pass	State
2026-02-12	INDIANA UNIVERSITY	BLOOMINGTON, Monroe, IN	Pass	State
2026-02-12	INDIANA UNIVERSITY	BLOOMINGTON, Monroe, IN	Pass	State
2026-02-12	INDIANA UNIVERSITY	BLOOMINGTON, Monroe, IN	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Fail	State
2026-02-12	WARRICK NEWCO LLC — high-priority violation on file	NEWBURGH, Warrick, IN	Pass	State
2026-02-11	IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file	RENSSELAER, Jasper, IN	Pass	State
2026-02-11	IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file	RENSSELAER, Jasper, IN	Fail	State
2026-02-11	IROQUOIS BIO ENERGY COMPANY LLC — high-priority violation on file	RENSSELAER, Jasper, IN	Fail	State
2026-02-11	SILGAN CONTAINERS MANUFACTURING CORPORATION	HAMMOND, Lake, IN	Pass	State
2026-02-11	MIDWESTERN PET FOODS	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-02-11	MIDWESTERN PET FOODS	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-02-11	MIDWESTERN PET FOODS	EVANSVILLE, Vanderburgh, IN	Pass	State
2026-02-11	MIDWESTERN PET FOODS	EVANSVILLE, Vanderburgh, IN	Pass	State

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