EPA Air · stack tests by year
Air-emissions stack tests in 2024
- 39,252Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2024
- California 18,905
- Ohio 2,721
- Oklahoma 1,804
- Indiana 1,704
- New Mexico 1,428
- Florida 1,427
- Wyoming 1,285
- Georgia 1,104
- Pennsylvania 905
- Alabama 721
- Arkansas 569
- Missouri 539
- Iowa 464
- Mississippi 437
- Colorado 400
- Washington 338
- Texas 271
- Wisconsin 269
- North Carolina 254
- Minnesota 250
- West Virginia 230
- South Carolina 223
- Kentucky 218
- Delaware 185
- Montana 180
- Michigan 159
- Virginia 159
- Alaska 158
- Utah 157
- Tennessee 155
- Nebraska 150
- North Dakota 138
- Arizona 126
- Connecticut 122
- New York 115
- Maine 114
- Louisiana 113
- Illinois 109
- Idaho 91
- Nevada 88
- Hawaii 67
- Kansas 64
- New Hampshire 61
- South Dakota 59
- Maryland 58
- Massachusetts 52
- Oregon 35
- Rhode Island 29
- District of Columbia 25
- New Jersey 8
- Puerto Rico 5
- Vermont 4
Other years
Air-emissions stack tests recorded in 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-09-04 | NORTH AMERICAN STAINLESS | GHENT, Carroll, KY | Pass | State |
| 2024-09-04 | NORTH AMERICAN STAINLESS | GHENT, Carroll, KY | Pass | State |
| 2024-09-04 | WHEELABRATOR BALTIMORE, LP | BALTIMORE, Baltimore (city), MD | Pass | State |
| 2024-09-04 | LEPAGE BAKERIES PARK STREET LLC | LEWISTON, Androscoggin, ME | Pass | State |
| 2024-09-04 | DENSO MANUFACTURING MICHIGAN, INC. | BATTLE CREEK, Calhoun, MI | Pass | State |
| 2024-09-04 | USG INTERIORS LLC | RED WING, Goodhue, MN | Pass | State |
| 2024-09-04 | BARNHILL CONTRACTING COMPANY - SHAW PLANT | FAYETTEVILLE, Cumberland, NC | Pass | State |
| 2024-09-04 | CAMPBELL SOUP SUPPLY COMPANY | MAXTON, Robeson, NC | Pending | State |
| 2024-09-04 | WEST TURKEY TRACK BOOSTER — high-priority violation on file | LOCO HILLS, Eddy, NM | Pass | State |
| 2024-09-04 | WEST TURKEY TRACK BOOSTER — high-priority violation on file | LOCO HILLS, Eddy, NM | Pass | State |
| 2024-09-04 | TEXANA COMPRESSOR STATION | CARLSBAD, Eddy, NM | Pass | State |
| 2024-09-04 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-04 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-04 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-04 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-04 | SATURNIUS PAD V | LOVING, Eddy, NM | Pass | State |
| 2024-09-04 | SATURNIUS PAD V | LOVING, Eddy, NM | Pass | State |
| 2024-09-04 | LINAM RANCH GAS PLANT | HOBBS, Lea, NM | Pass | State |
| 2024-09-04 | GREYHOUND COMPRESSOR STATION | EUNICE, Lea, NM | Pass | State |
| 2024-09-04 | REEVES GENERATING STATION | ALBUQUERQUE, Bernalillo, NM | Pass | Local |
| 2024-09-04 | WIELAND FLAT COMPRESSOR STATION | ELKO, Elko, NV | Pass | State |
| 2024-09-04 | WALLEYE POWER, LLC, BAY SHORE PLANT | OREGON, Lucas, OH | Pass | State |
| 2024-09-04 | TRIAD HUNTER LLC - FORNI PAD | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2024-09-04 | TRIAD HUNTER LLC - FORNI PAD | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2024-09-04 | TRIAD HUNTER LLC - FORNI PAD | BENTON, TOWNSHIP OF, Monroe, OH | Pass | State |
| 2024-09-04 | SUNRISE COOPERATIVE | SOUTH CHARLESTON, Clark, OH | Pass | State |
| 2024-09-04 | IRON HORSE MIDSTREAM LLC / CRUSADER COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2024-09-04 | IRON HORSE MIDSTREAM LLC / CRUSADER COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2024-09-04 | MARKWEST OKLAHOMA GAS CO LLC / THETA COMPRESSOR STATION | OKARCHE, Canadian, OK | Pass | State |
| 2024-09-04 | MARKWEST OKLAHOMA GAS CO LLC / THETA COMPRESSOR STATION | OKARCHE, Canadian, OK | Pass | State |
| 2024-09-04 | TARGA PIPELINE MIDCONTINENT LLC / TIVIS COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pass | State |
| 2024-09-04 | TARGA PIPELINE MIDCONTINENT LLC / TIVIS COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pass | State |
| 2024-09-04 | ET GATHERING PROCESSING LLC / TERRIER COMPRESSOR STATION | THOMAS, Custer, OK | Pass | State |
| 2024-09-04 | ET GATHERING PROCESSING LLC / TERRIER COMPRESSOR STATION | THOMAS, Custer, OK | Pass | State |
| 2024-09-04 | SUPERIOR MIDSTREAM LLC / REEDING COMPRESSOR STATION | CASHION, Kingfisher, OK | Pass | State |
| 2024-09-04 | SUPERIOR MIDSTREAM LLC / CASHION GAS PLANT — high-priority violation on file | CASHION, Logan, OK | Pass | State |
| 2024-09-04 | EOG RESOURCES INC / LELIA 5X 1H PRODUCTION FACILITY | BLANCHARD, McClain, OK | Pass | State |
| 2024-09-04 | EQUITRANS LP/RAGER MTN LAUREL RIDGE STA — high-priority violation on file | JOHNSTOWN, Cambria, PA | Pass | State |
| 2024-09-04 | HEIDELBERG MATERIALS NE LLC /PERKIOMENVILLE — high-priority violation on file | PERKIOMENVILLE, Montgomery, PA | Pass | State |
| 2024-09-04 | NFG MIDSTREAM COVINGTON LLC/DCNR TRACT 595 | ARNOT, Tioga, PA | Pass | State |
| 2024-09-04 | REGENCY MARCELLUS GAS GATHERING LLC/ AUBURN STA | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2024-09-04 | SHOWPLACE WOOD PRODUCTS INC | HARRISBURG, Lincoln, SD | Pending | State |
| 2024-09-04 | PUGET SOUND ENERGY-FREDONIA | MOUNT VERNON, Skagit, WA | Pass | Local |
| 2024-09-04 | ICON MATERIALS | AUBURN, King, WA | Pass | Local |
| 2024-09-04 | DAIRYLAND POWER COOP ALMA SITE | ALMA, Buffalo, WI | Pass | State |
| 2024-09-04 | DAIRYLAND POWER COOP ALMA SITE | ALMA, Buffalo, WI | Pass | State |
| 2024-09-04 | AOC MATERIALS, LLC, NEAL PLANT | KENOVA, Wayne, WV | Pass | State |
| 2024-09-04 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-09-04 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-09-04 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-09-04 | DAVE JOHNSTON (PACIFICORP) | GLENROCK, Converse, WY | Pass | State |
| 2024-09-03 | LANXESS CORPORATION - CENTRAL PLANT | EL DORADO, Union, AR | Pass | State |
| 2024-09-03 | LOMA LINDA UNIVERSITY | LOMA LINDA, San Bernardino, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file | GREELEY AREA, Weld, CO | Pass | State |
| 2024-09-03 | ALGONQUIN GAS TRANSMISSION, LLC - CHAPLIN COMPRESSOR STATION | CHAPLIN, Windham, CT | Pass | State |
| 2024-09-03 | ALGONQUIN GAS TRANSMISSION, LLC - CHAPLIN COMPRESSOR STATION | CHAPLIN, Windham, CT | Pass | State |
| 2024-09-03 | ALGONQUIN GAS TRANSMISSION, LLC - CHAPLIN COMPRESSOR STATION | CHAPLIN, Windham, CT | Pass | State |
| 2024-09-03 | MCINTOSH COMBUSTION TURBINE - ELECTRIC GENERATING PLANT | RINCON, Effingham, GA | Pass | State |
| 2024-09-03 | MCINTOSH COMBUSTION TURBINE - ELECTRIC GENERATING PLANT | RINCON, Effingham, GA | Pass | State |
| 2024-09-03 | FORD MOTOR COMPANY - FLAT ROCK ASSEMBLY | FLAT ROCK, Wayne, MI | Pass | State |
| 2024-09-03 | FARMERS GRAIN TERMINAL INC., GREENVILLE | GREENVILLE, Washington, MS | Pass | State |
| 2024-09-03 | FARMERS GRAIN TERMINAL INC., GREENVILLE | GREENVILLE, Washington, MS | Pass | State |
| 2024-09-03 | BAKKEN GATHERING PLANT | SIDNEY, Richland, MT | Pass | State |
| 2024-09-03 | OPPD NORTH OMAHA POWER STATION | OMAHA, Douglas, NE | N/A | Local |
| 2024-09-03 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-03 | STRAWBERRY FIELDS BOOSTER STATION | LOCO HILLS, Eddy, NM | Pass | State |
| 2024-09-03 | STRAWBERRY FIELDS BOOSTER STATION | LOCO HILLS, Eddy, NM | Pass | State |
| 2024-09-03 | EOG RESOURCES, INC. - BURDETTE 19-12-6 PAD | DEERSVILLE, Harrison, OH | Pass | State |
| 2024-09-03 | EOG RESOURCES, INC. - BURDETTE 19-12-6 PAD | DEERSVILLE, Harrison, OH | Pass | State |
| 2024-09-03 | EUREKA MIDSTREAM-ZINK COMPRESSOR STATION | CLARINGTON, Monroe, OH | Pass | State |
| 2024-09-03 | EUREKA MIDSTREAM-ZINK COMPRESSOR STATION | CLARINGTON, Monroe, OH | Pass | State |
| 2024-09-03 | IRON HORSE MIDSTREAM LLC / CRUSADER COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2024-09-03 | IRON HORSE MIDSTREAM LLC / CRUSADER COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2024-09-03 | TARGA PIPELINE MIDCONTINENT LLC / TIVIS COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pass | State |
| 2024-09-03 | TARGA PIPELINE MIDCONTINENT LLC / TIVIS COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pass | State |
| 2024-09-03 | ET GATHERING PROCESSING LLC / REBEL COMPRESSOR STATION | ARNETT, Ellis, OK | Pass | State |
| 2024-09-03 | SUPERIOR MIDSTREAM LLC / CASHION NORTH BOOSTER STATION (WASWO) | CASHION, Logan, OK | Pass | State |
| 2024-09-03 | SUPERIOR MIDSTREAM LLC / CASHION NORTH BOOSTER STATION (WASWO) | CASHION, Logan, OK | Pass | State |
| 2024-09-03 | TALL OAK WOODFORD LLC / TREE HOUSE COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-09-03 | TALL OAK WOODFORD LLC / TREE HOUSE COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-09-03 | ET GATHERING PROCESSING LLC / ANTELOPE COMPRESSOR STATION | CRAWFORD, Roger Mills, OK | Pass | State |
| 2024-09-03 | STECKMAN RIDGE LP/CLEARVILLE | CLEARVILLE, Bedford, PA | Pass | State |
| 2024-09-03 | ALPACA ENERGY LLC/ELECTRIC GENERATING STA | CANTON, Bradford, PA | Pass | State |
| 2024-09-03 | DAIRYLAND POWER COOP ALMA SITE | ALMA, Buffalo, WI | Pass | State |
| 2024-09-03 | CITY BREWING CO INC — high-priority violation on file | LA CROSSE, La Crosse, WI | Pass | State |
| 2024-08-31 | CHEVRON USA PRODUCTS COMPANY | BIRMINGHAM, Jefferson, AL | Pass | Local |
| 2024-08-30 | SAVANT ALASKA LLC / BADAMI DEVELOPMENT FACILITY — high-priority violation on file | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2024-08-30 | HALLIBURTON ENERGY SERVICES, INC. - MAGNET COVE | MALVERN, Hot Spring, AR | Pass | State |
| 2024-08-30 | HALLIBURTON ENERGY SERVICES, INC. - MAGNET COVE | MALVERN, Hot Spring, AR | Pass | State |
| 2024-08-30 | HALLIBURTON ENERGY SERVICES, INC. - MAGNET COVE | MALVERN, Hot Spring, AR | Pass | State |
| 2024-08-30 | HALLIBURTON ENERGY SERVICES, INC. - MAGNET COVE | MALVERN, Hot Spring, AR | Pass | State |
| 2024-08-30 | HALLIBURTON ENERGY SERVICES, INC. - MAGNET COVE | MALVERN, Hot Spring, AR | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.