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 |
|---|---|---|---|---|
| 2025-10-01 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2025-10-01 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2025-10-01 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2025-10-01 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2025-10-01 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2025-10-01 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2025-10-01 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2025-10-01 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2025-10-01 | BLUE RACER MIDSTREAM, LLC - HAYES STATION | SALESVILLE, Guernsey, OH | Pass | State |
| 2025-10-01 | FAIRBORN CEMENT COMPANY LLC | XENIA, Greene, OH | Pass | State |
| 2025-10-01 | FAIRBORN CEMENT COMPANY LLC | XENIA, Greene, OH | Pass | State |
| 2025-10-01 | MIDDLETOWN COKE COMPANY, LLC — high-priority violation on file | MIDDLETOWN, Butler, OH | Pass | State |
| 2025-10-01 | MIAMI FORT POWER COMPANY LLC | NORTH BEND, Hamilton, OH | Pass | State |
| 2025-09-30 | INDUSTRIAL CONTAINER SERVICES, LLC — high-priority violation on file | GAHANNA, Franklin, OH | Fail | State |
| 2025-09-30 | FAIRBORN CEMENT COMPANY LLC | XENIA, Greene, OH | Pass | State |
| 2025-09-30 | MIAMI FORT POWER COMPANY LLC | NORTH BEND, Hamilton, OH | Pass | State |
| 2025-09-29 | EOG RESOURCES, INC. - STITT CR UNI PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2025-09-29 | EOG RESOURCES, INC. - STITT CR UNI PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2025-09-29 | EOG RESOURCES, INC. - STITT CR UNI PAD | CARROLLTON, Carroll, OH | Pass | State |
| 2025-09-29 | WALLEYE POWER, LLC, BAY SHORE PLANT | OREGON, Lucas, OH | Pass | State |
| 2025-09-29 | MEDINA COMPRESSOR STATION | MEDINA, Medina, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | EQM OLYMP MIDSTM GOLIATH, GODZILLA FORTRESS CMPRSR STNS | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-26 | NEXPERA FORT HILL PLANT | NORTH BEND, Hamilton, OH | Pass | State |
| 2025-09-25 | THE CYRIL-SCOTT COMPANY | LANCASTER, Fairfield, OH | Pass | State |
| 2025-09-25 | THE CYRIL-SCOTT COMPANY | LANCASTER, Fairfield, OH | Pass | State |
| 2025-09-25 | THE CYRIL-SCOTT COMPANY | LANCASTER, Fairfield, OH | Pass | State |
| 2025-09-25 | THE CYRIL-SCOTT COMPANY | LANCASTER, Fairfield, OH | Pass | State |
| 2025-09-25 | THE CYRIL-SCOTT COMPANY | LANCASTER, Fairfield, OH | Pass | State |
| 2025-09-25 | THE CYRIL-SCOTT COMPANY | LANCASTER, Fairfield, OH | Pass | State |
| 2025-09-25 | THE CYRIL-SCOTT COMPANY | LANCASTER, Fairfield, OH | Pass | State |
| 2025-09-25 | THE CYRIL-SCOTT COMPANY | LANCASTER, Fairfield, OH | Pass | State |
| 2025-09-25 | AMERICAN NITRILE GROVE CITY — high-priority violation on file | GROVE CITY, Franklin, OH | Fail | State |
| 2025-09-25 | RECYCLE SERVICES LLC | SYLVANIA, Lucas, OH | Pass | State |
| 2025-09-25 | RECYCLE SERVICES LLC | SYLVANIA, Lucas, OH | Pass | State |
| 2025-09-25 | RECYCLE SERVICES LLC | SYLVANIA, Lucas, OH | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - VINCENT MTP JF | ADENA, Jefferson, OH | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - VINCENT MTP JF | ADENA, Jefferson, OH | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - VINCENT MTP JF | ADENA, Jefferson, OH | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - KRINKE MTP JF | MOUNT PLEASANT, Jefferson, OH | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - KRINKE MTP JF | MOUNT PLEASANT, Jefferson, OH | Pass | State |
| 2025-09-25 | ASCENT RESOURCES - UTICA LLC - KRINKE MTP JF | MOUNT PLEASANT, Jefferson, OH | Pass | State |
| 2025-09-25 | BIMBO QSR OHIO,LLC.- EASTPOINTE FACILITY | ZANESVILLE, Muskingum, OH | Pass | State |
| 2025-09-24 | BUCKEYE TERMINALS LLC - COLUMBUS SOUTH TERMINAL | COLUMBUS, Franklin, OH | Pass | State |
| 2025-09-24 | ASCENT RESOURCES - UTICA LLC - TRUCHAN NE WHL BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-09-24 | ASCENT RESOURCES - UTICA LLC - TRUCHAN NE WHL BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-09-24 | ASCENT RESOURCES - UTICA LLC - TRUCHAN NE WHL BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-09-24 | MANE, INC. — high-priority violation on file | LEBANON, Warren, OH | Fail | State |
| 2025-09-23 | SANOH AMERICA, INC. | FINDLAY, Hancock, OH | Pass | State |
| 2025-09-23 | SANOH AMERICA, INC. | FINDLAY, Hancock, OH | Pass | State |
| 2025-09-23 | ASCENT RESOURCES - UTICA LLC - SIDWELL WHL BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-09-23 | ASCENT RESOURCES - UTICA LLC - SIDWELL WHL BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-09-23 | ASCENT RESOURCES - UTICA LLC - SIDWELL WHL BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-09-23 | ASCENT RESOURCES - UTICA LLC - THREE DADS RCH BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-09-23 | ASCENT RESOURCES - UTICA LLC - THREE DADS RCH BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-09-23 | ASCENT RESOURCES - UTICA LLC - THREE DADS RCH BL | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2025-09-22 | CRAIG MILLER PAD 952413 | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-22 | CRAIG MILLER PAD 952413 | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-22 | CRAIG MILLER PAD 952413 | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-22 | SAWYERS PAD 952878 | WOODSFIELD, Monroe, OH | Pass | State |
| 2025-09-22 | SAWYERS PAD 952878 | WOODSFIELD, Monroe, OH | Pass | State |
| 2025-09-22 | SAWYERS PAD 952878 | WOODSFIELD, Monroe, OH | Pass | State |
| 2025-09-19 | TOLEDO TERMINAL HOLDINGS, LLC — high-priority violation on file | TOLEDO, Lucas, OH | Pass | State |
| 2025-09-19 | GULFPORT APPALACHIA, LLC - JONES PAD | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-19 | GULFPORT APPALACHIA, LLC - JONES PAD | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-19 | GULFPORT APPALACHIA, LLC - JONES PAD | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-19 | GULFPORT APPALACHIA, LLC - ROUTH | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-19 | GULFPORT APPALACHIA, LLC - ROUTH | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-19 | GULFPORT APPALACHIA, LLC - ROUTH | BEALLSVILLE, Monroe, OH | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - FAUNA WEL JF | MINGO JUNCTION, Jefferson, OH | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - FAUNA WEL JF | MINGO JUNCTION, Jefferson, OH | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - FAUNA WEL JF | MINGO JUNCTION, Jefferson, OH | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - HAMMACK CRC JF | STEUBENVILLE, Jefferson, OH | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - HAMMACK CRC JF | STEUBENVILLE, Jefferson, OH | Pass | State |
| 2025-09-18 | ASCENT RESOURCES - UTICA LLC - HAMMACK CRC JF | STEUBENVILLE, Jefferson, OH | Pass | State |
| 2025-09-18 | ABBOTT NUTRITION - TIPP CITY | TIPP CITY, Miami, OH | Pass | State |
| 2025-09-18 | ABBOTT NUTRITION - TIPP CITY | TIPP CITY, Miami, OH | Pass | State |
| 2025-09-18 | ABBOTT NUTRITION - TIPP CITY | TIPP CITY, Miami, OH | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.