EPA Air · stack tests by year
Air-emissions stack tests in 2023
- 26,911Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2023
- California 7,676
- Ohio 2,800
- Florida 1,589
- Indiana 1,487
- Oklahoma 1,420
- New Mexico 1,087
- Georgia 1,057
- Pennsylvania 889
- Alabama 689
- Wyoming 670
- Mississippi 625
- Arkansas 602
- Iowa 453
- Colorado 436
- Texas 395
- Missouri 328
- North Carolina 302
- Washington 283
- Wisconsin 251
- Michigan 229
- Minnesota 228
- Delaware 224
- South Carolina 222
- West Virginia 218
- Kentucky 210
- Tennessee 200
- Utah 196
- Montana 177
- Virginia 170
- North Dakota 157
- Illinois 152
- Nebraska 152
- Alaska 140
- Nevada 127
- New York 123
- Maine 111
- Connecticut 108
- Arizona 102
- Louisiana 77
- Idaho 77
- Hawaii 72
- New Hampshire 58
- New Jersey 56
- South Dakota 54
- Maryland 49
- Kansas 45
- Oregon 44
- District of Columbia 36
- Massachusetts 27
- Rhode Island 20
- Puerto Rico 6
- Vermont 5
Other years
Air-emissions stack tests recorded in 2023
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2023-11-08 | ASCENT RESOURCES - UTICA LLC - HOWELL 33 SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2023-11-08 | ASCENT RESOURCES - UTICA LLC - PORCO WYN JF | RAYLAND, Jefferson, OH | Pass | State |
| 2023-11-08 | ASCENT RESOURCES - UTICA LLC - PORCO WYN JF | RAYLAND, Jefferson, OH | Pass | State |
| 2023-11-08 | ASCENT RESOURCES - UTICA LLC - PORCO WYN JF | RAYLAND, Jefferson, OH | Pass | State |
| 2023-11-08 | RICHARD STALDER PAD 952766 | SARDIS, Monroe, OH | Pass | State |
| 2023-11-08 | RICHARD STALDER PAD 952766 | SARDIS, Monroe, OH | Pass | State |
| 2023-11-08 | RICHARD STALDER PAD 952766 | SARDIS, Monroe, OH | Pass | State |
| 2023-11-08 | RIGGENBACH PAD 952771 | SARDIS, Monroe, OH | Pass | State |
| 2023-11-08 | RIGGENBACH PAD 952771 | SARDIS, Monroe, OH | Pass | State |
| 2023-11-08 | RIGGENBACH PAD 952771 | SARDIS, Monroe, OH | Pass | State |
| 2023-11-08 | MAHLE ENGINE COMPONENTS USA, INC. | MCCONNELSVILLE, Morgan, OH | Pass | State |
| 2023-11-08 | MAHLE ENGINE COMPONENTS USA, INC. | MCCONNELSVILLE, Morgan, OH | Pass | State |
| 2023-11-08 | CLEVELAND-CLIFFS CLEVELAND WORKS LLC — high-priority violation on file | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2023-11-08 | PEOPLES ELECTRIC COOP / CENTRAHOMA — high-priority violation on file | CENTRAHOMA, Coal, OK | Pass | State |
| 2023-11-08 | PEOPLES ELECTRIC COOP / CENTRAHOMA — high-priority violation on file | CENTRAHOMA, Coal, OK | Pass | State |
| 2023-11-08 | ONEOK FIELD SERVICES CO LLC / EAST PUTNAM COMPRESSOR STATION | PUTNAM, Dewey, OK | Pass | State |
| 2023-11-08 | ONEOK FIELD SERVICES CO LLC / EAST PUTNAM COMPRESSOR STATION | PUTNAM, Dewey, OK | Pass | State |
| 2023-11-08 | WYNNEWOOD REFINING CO LLC / WYNNEWOOD REFINERY — high-priority violation on file | WYNNEWOOD, Garvin, OK | Pass | State |
| 2023-11-08 | MARKWEST OKLAHOMA GAS CO LLC / MOSS COMPRESSOR STATION | HOLDENVILLE, Hughes, OK | Pass | State |
| 2023-11-08 | MARKWEST OKLAHOMA GAS CO LLC / LOYAL COMPRESSOR STATION | LOYAL, Kingfisher, OK | Pass | State |
| 2023-11-08 | MARKWEST OKLAHOMA GAS CO LLC / STANGL COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-11-08 | EOG RESOURCES INC / STURGELL CTB PRODUCTION FACILITY | BLANCHARD, McClain, OK | Pass | State |
| 2023-11-08 | EXPAND OPERATING LLC/RU-71 BLUE BECK WELLPAD | MILFORD, Susquehanna, PA | Pass | State |
| 2023-11-08 | AARON INDUSTRIES LLC DBA PL DEVELOPMENTS | CLINTON, Laurens, SC | Pass | State |
| 2023-11-08 | KINDER MORGAN NEWINGTON TERMINAL #1 | NEWINGTON, Fairfax, VA | Pass | State |
| 2023-11-08 | BOISE CASCADE LUMBER | KETTLE FALLS, Stevens, WA | Pass | State |
| 2023-11-08 | CEDAR GROVE COMPOST CO | MAPLE VALLEY, King, WA | Fail | Local |
| 2023-11-08 | CEDAR GROVE COMPOST CO | MAPLE VALLEY, King, WA | Fail | Local |
| 2023-11-08 | MULTICARE HEALTH SYSTEM | TACOMA, Pierce, WA | Pass | Local |
| 2023-11-08 | LOUISIANA-PACIFIC CORPORATION - HAYWARD | HAYWARD, Shawano, WI | Pass | State |
| 2023-11-08 | DELRIN USA, LLC, DELRIN USA - WASHINGTON WORKS | WASHINGTON, Wood, WV | Pass | State |
| 2023-11-08 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-11-08 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-11-08 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-11-08 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-11-07 | OUTOKUMPU STAINLESS USA, LLC | CALVERT, Mobile, AL | Pass | State |
| 2023-11-07 | OUTOKUMPU STAINLESS USA, LLC | CALVERT, Mobile, AL | Pass | State |
| 2023-11-07 | OUTOKUMPU STAINLESS USA, LLC | CALVERT, Mobile, AL | Pass | State |
| 2023-11-07 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2023-11-07 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2023-11-07 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2023-11-07 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2023-11-07 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2023-11-07 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2023-11-07 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2023-11-07 | SOUTHERN NATURAL GAS | REFORM, Pickens, AL | Pass | State |
| 2023-11-07 | SOUTHERN NATURAL GAS | REFORM, Pickens, AL | Pass | State |
| 2023-11-07 | ALABAMA POWER COMPANY | WILSONVILLE, Shelby, AL | Pass | State |
| 2023-11-07 | DESOTO GATHERING COMPANY, LLC. - PUMA CPF-1 | HEBER SPRINGS, Cleburne, AR | Pass | State |
| 2023-11-07 | ET GATHERING & PROCESSING LLC. - CHISMVILLE COMPRESSOR STATION | BOONEVILLE, Logan, AR | Pass | State |
| 2023-11-07 | ET GATHERING & PROCESSING LLC. - CHISMVILLE COMPRESSOR STATION | BOONEVILLE, Logan, AR | Pass | State |
| 2023-11-07 | ET GATHERING & PROCESSING LLC. - EAST CHISMVILLE COMPRESSOR STATION | BOONEVILLE, Logan, AR | Pass | State |
| 2023-11-07 | NUCOR COATINGS CORPORATION - BLYTHEVILLE PLANT | BLYTHEVILLE, Mississippi, AR | Pass | State |
| 2023-11-07 | BIG RIVER STEEL LLC | OSCEOLA, Mississippi, AR | Pass | State |
| 2023-11-07 | ARCWOOD ENVIRONMENTAL LLC. | HASKELL, Saline, AR | Pass | State |
| 2023-11-07 | LANXESS CORPORATION-SOUTH PLANT | EL DORADO, Union, AR | Pass | State |
| 2023-11-07 | RIO BRAVO - ROCKLIN | LINCOLN, Placer, CA | Fail | Local |
| 2023-11-07 | LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file | PARACHUTE 10.1 MI. W OF, Garfield, CO | Pass | State |
| 2023-11-07 | SOUTHERN STAR CENTRAL GAS PIPELINE CHEYE | NUNN 18.4 MI. N OF, Weld, CO | Pass | State |
| 2023-11-07 | DCP OPERATING CO - LIBSACK C.S. | GREELEY AREA, Weld, CO | Pass | State |
| 2023-11-07 | CLARIOS, LLC - MIDDLETOWN DISTRIBUTION CENTER | MIDDLETOWN, New Castle, DE | Pass | State |
| 2023-11-07 | CLARIOS, LLC - MIDDLETOWN DISTRIBUTION CENTER | MIDDLETOWN, New Castle, DE | Pass | State |
| 2023-11-07 | OLEANDER POWER PROJECT, LP | COCOA, Brevard, FL | Pass | State |
| 2023-11-07 | OLEANDER POWER PROJECT, LP | COCOA, Brevard, FL | Pass | State |
| 2023-11-07 | MOSAIC FERTILIZER, LLC | RIVERVIEW, Hillsborough, FL | Pass | State |
| 2023-11-07 | HALIFAX PAVING, INC. | ORMOND BEACH, Volusia, FL | Pass | State |
| 2023-11-07 | GA POWER CO. PLANT YATES | NEWNAN, Coweta, GA | Pass | State |
| 2023-11-07 | EMORY UNIVERSITY | ATLANTA, DeKalb, GA | Pass | State |
| 2023-11-07 | LX HAUSYS AMERICA, INC. — high-priority violation on file | ADAIRSVILLE, Gordon, GA | Pass | State |
| 2023-11-07 | LX HAUSYS AMERICA, INC. — high-priority violation on file | ADAIRSVILLE, Gordon, GA | Pass | State |
| 2023-11-07 | ATLANTIC POLE - GEORGIA, LLC | VIDALIA, Toombs, GA | Pass | State |
| 2023-11-07 | ENVIVA PELLETS WAYCROSS, LLC — high-priority violation on file | WAYCROSS, Ware, GA | Pass | State |
| 2023-11-07 | ENVIVA PELLETS WAYCROSS, LLC — high-priority violation on file | WAYCROSS, Ware, GA | Pass | State |
| 2023-11-07 | ENVIVA PELLETS WAYCROSS, LLC — high-priority violation on file | WAYCROSS, Ware, GA | Pass | State |
| 2023-11-07 | ENVIVA PELLETS WAYCROSS, LLC — high-priority violation on file | WAYCROSS, Ware, GA | Pass | State |
| 2023-11-07 | ENVIVA PELLETS WAYCROSS, LLC — high-priority violation on file | WAYCROSS, Ware, GA | Pass | State |
| 2023-11-07 | NATURAL GAS PIPELINE CO OF AMERICA-#204 | COLUMBUS JUNCTION, Louisa, IA | Pass | State |
| 2023-11-07 | NATURAL GAS PIPELINE CO OF AMERICA-#204 | COLUMBUS JUNCTION, Louisa, IA | Pass | State |
| 2023-11-07 | INDIAN CREEK LANDFILL #2 | HOPEDALE, Tazewell, IL | Pass | State |
| 2023-11-07 | UNILEVER MANUFACTURING US INC | HAMMOND, Lake, IN | Pass | State |
| 2023-11-07 | UNILEVER MANUFACTURING US INC | HAMMOND, Lake, IN | Pass | State |
| 2023-11-07 | UNILEVER MANUFACTURING US INC | HAMMOND, Lake, IN | Pass | State |
| 2023-11-07 | ARKEMA INC | CALVERT CITY, Marshall, KY | Pass | State |
| 2023-11-07 | CLARIANT CORPORATION - WEST PLANT | LOUISVILLE, Jefferson, KY | Pass | Local |
| 2023-11-07 | LOUISVILLE GAS & ELECTRIC COMPANY, MILL CREEK GENERATING STATION | LOUISVILLE, Jefferson, KY | Pass | Local |
| 2023-11-07 | CONVERSE CENTRAL FACILITY | MANSFIELD, De Soto, LA | Pass | State |
| 2023-11-07 | CONVERSE CENTRAL FACILITY | MANSFIELD, De Soto, LA | Pass | State |
| 2023-11-07 | GLOBAL COMPANIES LLC | SOUTH PORTLAND, Cumberland, ME | Pass | State |
| 2023-11-07 | GLWA WATER RESOURCE RECOVERY FACILITY | DETROIT, Wayne, MI | Pass | State |
| 2023-11-07 | FCA US LLC STERLING HEIGHTS ASSEMBLY PLANT | STERLING HEIGHTS, Macomb, MI | Pending | State |
| 2023-11-07 | FLAT ROCK METAL, INC. | FLAT ROCK, Wayne, MI | Pass | State |
| 2023-11-07 | POTLATCHDELTIC LAND & LUMBER LLC. | GWINN, Marquette, MI | Pass | State |
| 2023-11-07 | GOPHER RESOURCE LLC | EAGAN, Dakota, MN | Pass | State |
| 2023-11-07 | HEARTLAND CORN PRODUCTS | WINTHROP, Sibley, MN | Pass | State |
| 2023-11-07 | THOMAS HILL ENERGY CENTER - POWER DIVISION | CLIFTON HILL, Randolph, MO | Pass | State |
| 2023-11-07 | RAY COUNTY STONE EE QUARRY | RICHMOND, Ray, MO | Pass | State |
| 2023-11-07 | RAY COUNTY STONE EE QUARRY | RICHMOND, Ray, MO | Pass | State |
| 2023-11-07 | RAY COUNTY STONE EE QUARRY | RICHMOND, Ray, MO | Pass | State |
| 2023-11-07 | RAY COUNTY STONE EE QUARRY | RICHMOND, Ray, MO | Pass | State |
| 2023-11-07 | LEAF RIVER CELLULOSE LLC — high-priority violation on file | NEW AUGUSTA, Perry, MS | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.