EPA Air · stack tests by state and year
Air-emissions stack tests in Indiana, 2025
- 1,619Stack 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 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Indiana, 2025
- Lake County 154
- Marion County 97
- Shelby County 86
- DeKalb County 77
- Wabash County 72
- Posey County 67
- Porter County 54
- Wayne County 53
- Crawford County 47
- Rush County 44
- Allen County 42
- Noble County 40
- Warrick County 40
- Knox County 36
- Huntington County 36
- Howard County 35
- White County 31
- Kosciusko County 30
- Fulton County 29
- Morgan County 26
- Montgomery County 25
- Johnson County 24
- Elkhart County 22
- Clark County 22
- St. Joseph County 20
- Tippecanoe County 20
- Wells County 20
- Cass County 19
- Clinton County 18
- Grant County 17
- Decatur County 16
- Randolph County 16
- Vigo County 16
- Dubois County 15
- LaPorte County 14
- Sullivan County 14
- Henry County 14
- Lawrence County 13
- Fountain County 12
- Jasper County 12
- Steuben County 11
- Marshall County 10
- Bartholomew County 10
- Spencer County 10
- Boone County 10
- Monroe County 9
- Vermillion County 8
- Jennings County 8
- Whitley County 8
- Daviess County 7
- Hendricks County 7
- Pike County 7
- Gibson County 7
- Vanderburgh County 5
- Martin County 5
- Madison County 5
- Putnam County 5
- Hancock County 5
- Jay County 5
- Scott County 4
- Perry County 4
- Franklin County 4
- Dearborn County 4
- Delaware County 3
Indiana, other years
Air-emissions stack tests recorded in Indiana, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-09-09 | MPLX TERMINALS LLC - MUNCIE TERMINAL | MUNCIE, Delaware, IN | Pass | State |
| 2025-09-09 | PRECOAT METALS | LA PORTE, LaPorte, IN | Pass | State |
| 2025-09-05 | RYOBI DIE CASTING USA INC — high-priority violation on file | SHELBYVILLE, Shelby, IN | Pass | State |
| 2025-09-05 | RYOBI DIE CASTING USA INC — high-priority violation on file | SHELBYVILLE, Shelby, IN | Pass | State |
| 2025-09-05 | RYOBI DIE CASTING USA INC — high-priority violation on file | SHELBYVILLE, Shelby, IN | Pass | State |
| 2025-09-05 | RYOBI DIE CASTING USA INC — high-priority violation on file | SHELBYVILLE, Shelby, IN | Pass | State |
| 2025-09-04 | DUALTECH INCORPORATED — high-priority violation on file | FRANKLIN, Johnson, IN | Pass | State |
| 2025-09-04 | LINDE INC | EAST CHICAGO, Lake, IN | Pass | State |
| 2025-09-03 | GENERAL MOTORS LLC FORT WAYNE ASSEMBLY — high-priority violation on file | ROANOKE, Huntington, IN | Pass | State |
| 2025-09-03 | GENERAL MOTORS LLC FORT WAYNE ASSEMBLY — high-priority violation on file | ROANOKE, Huntington, IN | Pass | State |
| 2025-09-03 | GENERAL MOTORS LLC FORT WAYNE ASSEMBLY — high-priority violation on file | ROANOKE, Huntington, IN | Pass | State |
| 2025-09-03 | GENERAL MOTORS LLC FORT WAYNE ASSEMBLY — high-priority violation on file | ROANOKE, Huntington, IN | Pass | State |
| 2025-08-29 | OMNISOURCE LLC | FORT WAYNE, Allen, IN | Pass | State |
| 2025-08-29 | OMNISOURCE LLC | FORT WAYNE, Allen, IN | Pass | State |
| 2025-08-29 | OMNISOURCE LLC | FORT WAYNE, Allen, IN | Pass | State |
| 2025-08-29 | OMNISOURCE LLC | FORT WAYNE, Allen, IN | Pass | State |
| 2025-08-29 | SIGECO - FB CULLEY GENERATING STATION | NEWBURGH, Warrick, IN | Pass | State |
| 2025-08-28 | CITGO PETROLEUM CORPORATION | HUNTINGTON, Huntington, IN | Pass | State |
| 2025-08-28 | CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file | EAST CHICAGO, Lake, IN | Pass | State |
| 2025-08-28 | CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file | EAST CHICAGO, Lake, IN | Pass | State |
| 2025-08-28 | CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file | EAST CHICAGO, Lake, IN | Fail | State |
| 2025-08-28 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2025-08-28 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2025-08-28 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-28 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-28 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-28 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-28 | METALX LLC DBA METALX WABASH | WABASH, Wabash, IN | Pass | State |
| 2025-08-28 | METALX LLC DBA METALX WABASH | WABASH, Wabash, IN | Pass | State |
| 2025-08-28 | METALX LLC DBA METALX WABASH | WABASH, Wabash, IN | Pass | State |
| 2025-08-28 | METALX LLC DBA METALX WABASH | WABASH, Wabash, IN | Pass | State |
| 2025-08-28 | METALX LLC DBA METALX WABASH | WABASH, Wabash, IN | Pass | State |
| 2025-08-27 | ARCHER DANIELS MIDLAND COMPANY — high-priority violation on file | FRANKFORT, Clinton, IN | Pass | State |
| 2025-08-27 | ARCHER DANIELS MIDLAND COMPANY — high-priority violation on file | FRANKFORT, Clinton, IN | Pass | State |
| 2025-08-27 | ARCHER DANIELS MIDLAND COMPANY — high-priority violation on file | FRANKFORT, Clinton, IN | Pass | State |
| 2025-08-27 | BROOKS CONSTRUCTION COMPANY INC | AUBURN, DeKalb, IN | Pass | State |
| 2025-08-27 | BROOKS CONSTRUCTION COMPANY INC | AUBURN, DeKalb, IN | Pass | State |
| 2025-08-27 | BROOKS CONSTRUCTION COMPANY INC | AUBURN, DeKalb, IN | Pass | State |
| 2025-08-27 | BROOKS CONSTRUCTION COMPANY INC | AUBURN, DeKalb, IN | Pass | State |
| 2025-08-27 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-27 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-27 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-27 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-27 | RAYBESTOS POWERTRAIN LLC | SULLIVAN, Sullivan, IN | Pass | State |
| 2025-08-27 | METALX LLC DBA METALX WABASH | WABASH, Wabash, IN | Pass | State |
| 2025-08-27 | METALX LLC DBA METALX WABASH | WABASH, Wabash, IN | Pass | State |
| 2025-08-27 | METALX LLC DBA METALX WABASH | WABASH, Wabash, IN | Pass | State |
| 2025-08-27 | SIGECO - FB CULLEY GENERATING STATION | NEWBURGH, Warrick, IN | Pass | State |
| 2025-08-26 | ARCHER DANIELS MIDLAND COMPANY — high-priority violation on file | FRANKFORT, Clinton, IN | Pass | State |
| 2025-08-26 | ARCHER DANIELS MIDLAND COMPANY — high-priority violation on file | FRANKFORT, Clinton, IN | Fail | State |
| 2025-08-26 | BLUE GRASS CHEMICAL SPECIALTIES LLC | NEW ALBANY, Floyd, IN | Pass | State |
| 2025-08-26 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2025-08-26 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2025-08-26 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-26 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-26 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-26 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-26 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-26 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-26 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-26 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-26 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-26 | GREEN PLAINS MOUNT VERNON LLC — high-priority violation on file | MOUNT VERNON, Posey, IN | Pass | State |
| 2025-08-26 | STEEL WAREHOUSE COMPANY LLC — high-priority violation on file | SOUTH BEND, St. Joseph, IN | Pass | State |
| 2025-08-26 | STEEL WAREHOUSE COMPANY LLC — high-priority violation on file | SOUTH BEND, St. Joseph, IN | Pass | State |
| 2025-08-26 | STEEL WAREHOUSE COMPANY LLC — high-priority violation on file | SOUTH BEND, St. Joseph, IN | Pass | State |
| 2025-08-26 | STEEL WAREHOUSE COMPANY LLC — high-priority violation on file | SOUTH BEND, St. Joseph, IN | Pass | State |
| 2025-08-26 | STEEL WAREHOUSE COMPANY LLC — high-priority violation on file | SOUTH BEND, St. Joseph, IN | Pass | State |
| 2025-08-26 | RAYBESTOS POWERTRAIN LLC | SULLIVAN, Sullivan, IN | Pass | State |
| 2025-08-26 | RAYBESTOS POWERTRAIN LLC | SULLIVAN, Sullivan, IN | Pass | State |
| 2025-08-26 | RAYBESTOS POWERTRAIN LLC | SULLIVAN, Sullivan, IN | Pass | State |
| 2025-08-26 | RAYBESTOS POWERTRAIN LLC | SULLIVAN, Sullivan, IN | Pass | State |
| 2025-08-26 | RAYBESTOS POWERTRAIN LLC | SULLIVAN, Sullivan, IN | Pass | State |
| 2025-08-26 | DAVE OMARA CONTRACTOR INCORPORATED — high-priority violation on file | LAUREL, Franklin, IN | Fail | State |
| 2025-08-26 | DAVE OMARA CONTRACTOR INCORPORATED — high-priority violation on file | LAUREL, Franklin, IN | Fail | State |
| 2025-08-26 | DAVE OMARA CONTRACTOR INCORPORATED — high-priority violation on file | LAUREL, Franklin, IN | Pass | State |
| 2025-08-26 | DAVE OMARA CONTRACTOR INCORPORATED — high-priority violation on file | LAUREL, Franklin, IN | Pass | State |
| 2025-08-21 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2025-08-21 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2025-08-21 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2025-08-21 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2025-08-21 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2025-08-21 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2025-08-20 | SDI LAFARGA, LLC | NEW HAVEN, Allen, IN | Pass | State |
| 2025-08-20 | RIETH RILEY ASPHALT PLANT NO 366 | LA PORTE, LaPorte, IN | Pass | State |
| 2025-08-20 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2025-08-20 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2025-08-20 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2025-08-20 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2025-08-20 | AES INDIANA PETERSBURG GENERATING STATION — high-priority violation on file | PETERSBURG, Pike, IN | Pass | State |
| 2025-08-20 | AES INDIANA PETERSBURG GENERATING STATION — high-priority violation on file | PETERSBURG, Pike, IN | Pass | State |
| 2025-08-19 | GENERAL MOTORS LLC FORT WAYNE ASSEMBLY — high-priority violation on file | ROANOKE, Huntington, IN | Pass | State |
| 2025-08-19 | GENERAL MOTORS LLC FORT WAYNE ASSEMBLY — high-priority violation on file | ROANOKE, Huntington, IN | Pass | State |
| 2025-08-19 | GENERAL MOTORS LLC FORT WAYNE ASSEMBLY — high-priority violation on file | ROANOKE, Huntington, IN | Pass | State |
| 2025-08-19 | GENERAL MOTORS LLC FORT WAYNE ASSEMBLY — high-priority violation on file | ROANOKE, Huntington, IN | Pass | State |
| 2025-08-19 | THE ANDERSONS RENEWABLES LLC — high-priority violation on file | LOGANSPORT, Cass, IN | Pass | State |
| 2025-08-19 | THE ANDERSONS RENEWABLES LLC — high-priority violation on file | LOGANSPORT, Cass, IN | Pass | State |
| 2025-08-19 | THE ANDERSONS RENEWABLES LLC — high-priority violation on file | LOGANSPORT, Cass, IN | Pass | State |
| 2025-08-19 | THE ANDERSONS RENEWABLES LLC — high-priority violation on file | LOGANSPORT, Cass, IN | Pass | State |
| 2025-08-19 | JASPER RUBBER PRODUCTS INC — high-priority violation on file | JASPER, Dubois, IN | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.