EPA Air · stack tests by state and year
Air-emissions stack tests in Ohio, 2025
- 2,213Stack 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 Ohio 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 Ohio, 2025
- Monroe County 233
- Belmont County 210
- Lucas County 209
- Harrison County 199
- Carroll County 138
- Jefferson County 121
- Guernsey County 95
- Noble County 84
- Montgomery County 68
- Defiance County 65
- Franklin County 61
- Hamilton County 58
- Medina County 43
- Undetermined County 42
- Butler County 34
- Putnam County 34
- Stark County 33
- Lorain County 31
- Columbiana County 27
- Wood County 26
- Cuyahoga County 25
- Trumbull County 24
- Mahoning County 23
- Perry County 23
- Marion County 20
- Tuscarawas County 20
- Fairfield County 18
- Licking County 17
- Crawford County 16
- Greene County 15
- Union County 15
- Ashtabula County 14
- Darke County 12
- Washington County 12
- Williams County 12
- Allen County 11
- Wayne County 10
- Brown County 9
- Miami County 9
- Summit County 9
- Warren County 8
- Richland County 7
- Clark County 6
- Huron County 6
- Athens County 5
- Muskingum County 5
- Erie County 5
- Van Wert County 4
- Hancock County 4
- Delaware County 3
- Shelby County 3
- Portage County 3
- Coshocton County 3
- Lake County 3
- Jackson County 3
Ohio, other years
Air-emissions stack tests recorded in Ohio, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-04-08 | POET BIOREFINING - LEIPSIC — high-priority violation on file | LEIPSIC, Putnam, OH | Fail | State |
| 2025-04-08 | POET BIOREFINING - LEIPSIC — high-priority violation on file | LEIPSIC, Putnam, OH | Pass | State |
| 2025-04-08 | POET BIOREFINING - LEIPSIC — high-priority violation on file | LEIPSIC, Putnam, OH | Pass | State |
| 2025-04-08 | POET BIOREFINING - LEIPSIC — high-priority violation on file | LEIPSIC, Putnam, OH | Pass | State |
| 2025-04-08 | POET BIOREFINING - LEIPSIC — high-priority violation on file | LEIPSIC, Putnam, OH | Pass | State |
| 2025-04-08 | POET BIOREFINING - LEIPSIC — high-priority violation on file | LEIPSIC, Putnam, OH | Pass | State |
| 2025-04-08 | POET BIOREFINING - LEIPSIC — high-priority violation on file | LEIPSIC, Putnam, OH | Pass | State |
| 2025-04-08 | POET BIOREFINING - LEIPSIC — high-priority violation on file | LEIPSIC, Putnam, OH | Pass | State |
| 2025-04-08 | POET BIOREFINING - LEIPSIC — high-priority violation on file | LEIPSIC, Putnam, OH | Pass | State |
| 2025-04-08 | ASCENT RESOURCES - UTICA LLC - COFFIELD RCH BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-04-08 | ASCENT RESOURCES - UTICA LLC - COFFIELD RCH BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-04-08 | ASCENT RESOURCES - UTICA LLC - COFFIELD RCH BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-04-08 | RIGGENBACH PAD 952771 | SARDIS, Monroe, OH | Pass | State |
| 2025-04-08 | RIGGENBACH PAD 952771 | SARDIS, Monroe, OH | Pass | State |
| 2025-04-08 | RIGGENBACH PAD 952771 | SARDIS, Monroe, OH | Pass | State |
| 2025-04-08 | YELLOW ROSE PAD 953034 | WOODSFIELD, Monroe, OH | Pass | State |
| 2025-04-08 | YELLOW ROSE PAD 953034 | WOODSFIELD, Monroe, OH | Pass | State |
| 2025-04-08 | YELLOW ROSE PAD 953034 | WOODSFIELD, Monroe, OH | Pass | State |
| 2025-04-04 | MONUMENT GENERATING STATION | DAYTON, Montgomery, OH | Pass | State |
| 2025-04-04 | MONUMENT GENERATING STATION | DAYTON, Montgomery, OH | Pass | State |
| 2025-04-04 | MONUMENT GENERATING STATION | DAYTON, Montgomery, OH | Pass | State |
| 2025-04-03 | EOG RESOURCES, INC. - BERGER TC PER PAD | UHRICHSVILLE, Tuscarawas, OH | Pass | State |
| 2025-04-03 | EOG RESOURCES, INC. - BERGER TC PER PAD | UHRICHSVILLE, Tuscarawas, OH | Pass | State |
| 2025-04-03 | EOG RESOURCES, INC. - BERGER TC PER PAD | UHRICHSVILLE, Tuscarawas, OH | Pass | State |
| 2025-04-03 | ORMET 9 PAD 952729 | HANNIBAL, Monroe, OH | Pass | State |
| 2025-04-03 | ORMET 9 PAD 952729 | HANNIBAL, Monroe, OH | Pass | State |
| 2025-04-03 | ORMET 9 PAD 952729 | HANNIBAL, Monroe, OH | Pass | State |
| 2025-04-03 | ORMET 15 PAD 952728 | CLARINGTON, Monroe, OH | Pass | State |
| 2025-04-03 | ORMET 15 PAD 952728 | CLARINGTON, Monroe, OH | Pass | State |
| 2025-04-03 | ORMET 15 PAD 952728 | CLARINGTON, Monroe, OH | Pass | State |
| 2025-04-03 | GREER STEEL CO. | DOVER, Tuscarawas, OH | Pass | State |
| 2025-04-02 | RUFENER PAD 952860 | SARDIS, Monroe, OH | Pass | State |
| 2025-04-02 | RUFENER PAD 952860 | SARDIS, Monroe, OH | Pass | State |
| 2025-04-02 | RUFENER PAD 952860 | SARDIS, Monroe, OH | Pass | State |
| 2025-04-02 | RANDALL PAD 952760 | SARDIS, Monroe, OH | Pass | State |
| 2025-04-02 | RANDALL PAD 952760 | SARDIS, Monroe, OH | Pass | State |
| 2025-04-02 | RANDALL PAD 952760 | SARDIS, Monroe, OH | Pass | State |
| 2025-04-02 | SHROYER PAD 952884 | CLARINGTON, Monroe, OH | Pass | State |
| 2025-04-02 | SHROYER PAD 952884 | CLARINGTON, Monroe, OH | Pass | State |
| 2025-04-02 | SHROYER PAD 952884 | CLARINGTON, Monroe, OH | Pass | State |
| 2025-04-02 | MONUMENT GENERATING STATION | DAYTON, Montgomery, OH | Pass | State |
| 2025-04-02 | MONUMENT GENERATING STATION | DAYTON, Montgomery, OH | Pass | State |
| 2025-04-02 | MANE INC | CINCINNATI, Hamilton, OH | Pass | State |
| 2025-04-02 | MANE INC | CINCINNATI, Hamilton, OH | Pass | State |
| 2025-04-02 | MANE INC | CINCINNATI, Hamilton, OH | Pass | State |
| 2025-04-01 | EOG RESOURCES, INC. - FOLSAM CR HAR PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2025-04-01 | EOG RESOURCES, INC. - FOLSAM CR HAR PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2025-04-01 | EOG RESOURCES, INC. - FOLSAM CR HAR PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2025-04-01 | OHIO UNIVERSITY LAUSCHE HEATING PLANT | ATHENS, Athens, OH | Pass | State |
| 2025-04-01 | OHIO UNIVERSITY LAUSCHE HEATING PLANT | ATHENS, Athens, OH | Pass | State |
| 2025-04-01 | OHIO UNIVERSITY LAUSCHE HEATING PLANT | ATHENS, Athens, OH | Pass | State |
| 2025-04-01 | TAIT ELECTRIC GENERATING STATION | MORAINE, Montgomery, OH | Pass | State |
| 2025-04-01 | TAIT ELECTRIC GENERATING STATION | MORAINE, Montgomery, OH | Pass | State |
| 2025-04-01 | TAIT ELECTRIC GENERATING STATION | MORAINE, Montgomery, OH | Pass | State |
| 2025-04-01 | TAIT ELECTRIC GENERATING STATION | MORAINE, Montgomery, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-28 | AMSTED RAIL - COLUMBUS PLANT | GROVEPORT, Franklin, OH | Pass | State |
| 2025-03-27 | DEPARTMENT OF PUBLIC UTILITIES, CITY OF ORRVILLE, OHIO | ORRVILLE, Wayne, OH | Pass | State |
| 2025-03-27 | DARLING INGREDIENTS INC. (DBA BAKERY FEEDS) | NORTH BALTIMORE, Wood, OH | Fail | State |
| 2025-03-27 | DARLING INGREDIENTS INC. (DBA BAKERY FEEDS) | NORTH BALTIMORE, Wood, OH | Pass | State |
| 2025-03-27 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2025-03-27 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2025-03-27 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2025-03-27 | EXPAND OPERATING, LLC - MILLER PAD | SARDIS, Monroe, OH | Pass | State |
| 2025-03-27 | EXPAND OPERATING, LLC - MILLER PAD | SARDIS, Monroe, OH | Pass | State |
| 2025-03-27 | EXPAND OPERATING, LLC - MILLER PAD | SARDIS, Monroe, OH | Pass | State |
| 2025-03-26 | ERIE GENERATING STATION | MILAN, Erie, OH | Pass | State |
| 2025-03-26 | 3 SIGMA LLC | TROY, Miami, OH | Pass | State |
| 2025-03-26 | 3 SIGMA LLC | TROY, Miami, OH | Pass | State |
| 2025-03-25 | ERIE GENERATING STATION | MILAN, Erie, OH | Pass | State |
| 2025-03-25 | ERIE GENERATING STATION | MILAN, Erie, OH | Pass | State |
| 2025-03-25 | ERIE GENERATING STATION | MILAN, Erie, OH | Pass | State |
| 2025-03-25 | GLEN-GERY CORP. IBERIA PLANT | IBERIA, Marion, OH | Pass | State |
| 2025-03-25 | WALLEYE POWER, LLC, BAY SHORE PLANT | OREGON, Lucas, OH | Pass | State |
| 2025-03-21 | GREEN CIRCLE GROWERS — high-priority violation on file | OBERLIN, Lorain, OH | Pass | State |
| 2025-03-21 | GREEN CIRCLE GROWERS — high-priority violation on file | OBERLIN, Lorain, OH | Fail | State |
| 2025-03-21 | GREEN CIRCLE GROWERS — high-priority violation on file | OBERLIN, Lorain, OH | Pass | State |
| 2025-03-21 | GREEN CIRCLE GROWERS — high-priority violation on file | OBERLIN, Lorain, OH | Pass | State |
| 2025-03-21 | THE MEDICAL CENTER COMPANY | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2025-03-20 | IRONUNITS LLC | TOLEDO, Lucas, OH | Pass | State |
| 2025-03-20 | IRONUNITS LLC | TOLEDO, Lucas, OH | Pass | State |
| 2025-03-20 | THE MEDICAL CENTER COMPANY | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2025-03-20 | TEXAS EASTERN TRANSMISSION - LEBANON | LEBANON, Warren, OH | Pass | State |
| 2025-03-20 | TEXAS EASTERN TRANSMISSION - LEBANON | LEBANON, Warren, OH | Pass | State |
| 2025-03-19 | OWENS CORNING INSULATING SYSTEMS, LLC | NEWARK, Licking, OH | Pass | State |
| 2025-03-19 | ROVER PIPELINE - MAINLINE CS1 | SHERRODSVILLE, Carroll, OH | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.