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 |
|---|---|---|---|---|
| 2024-09-24 | EQUITRANS LP - PLASMA COMPRESSOR STATION | CLARINGTON, Monroe, OH | Pass | State |
| 2024-09-24 | ET GATHERING PROCESSING LLC / JET COMPRESSOR STATION | JET, Alfalfa, OK | Pass | State |
| 2024-09-24 | ET GATHERING PROCESSING LLC / JET COMPRESSOR STATION | JET, Alfalfa, OK | Pass | State |
| 2024-09-24 | MARKWEST OKLAHOMA GAS CO LLC / DAVID BOWERS COMPRESSOR STATION | SWEETWATER, Beckham, OK | Pass | State |
| 2024-09-24 | ENLINK MIDSTREAM SERVICES LLC / SILVER COMPRESSOR STATION | CALUMET, Canadian, OK | Pass | State |
| 2024-09-24 | CORONADO ENERGY PARTNERS LLC / ARDMORE 2H 8 3 8MH | SPRINGER, Carter, OK | Pass | State |
| 2024-09-24 | CORONADO ENERGY PARTNERS LLC / ARDMORE 2H 8 3 8MH | SPRINGER, Carter, OK | Pass | State |
| 2024-09-24 | ET GATHERING PROCESSING LLC / TABLER COMPRESSOR STATION | TABLER, Grady, OK | Pass | State |
| 2024-09-24 | ET GATHERING PROCESSING LLC / TABLER COMPRESSOR STATION | TABLER, Grady, OK | Pass | State |
| 2024-09-24 | MARKWEST OKLAHOMA GAS CO LLC / DUNN COMPRESSOR STATION | STUART, Hughes, OK | Pass | State |
| 2024-09-24 | MARKWEST OKLAHOMA GAS CO LLC / DUNN COMPRESSOR STATION | STUART, Hughes, OK | Pass | State |
| 2024-09-24 | ANCHOR GLASS CONTAINER CORP / HENRYETTA FACILITY | HENRYETTA, Okmulgee, OK | Pass | State |
| 2024-09-24 | TALL OAK WOODFORD LLC / TREE HOUSE COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-09-24 | FW MIDCON I LLC / CLARENCE 0204 2H 3H 11X MCCLELLAND 020 | FOSTER, Stephens, OK | Pass | State |
| 2024-09-24 | INTL WAXES INC/FARMERS VALLEY | SMETHPORT, McKean, PA | Pass | State |
| 2024-09-24 | RAUSCH CREEK GENERATION LLC/FRAILEY TWP — high-priority violation on file | TREMONT, Schuylkill, PA | Pass | State |
| 2024-09-24 | REGENCY MARCELLUS GATHERING LLC/BRADFORD WEST COMP STA | GRANVILLE SUMMIT, Bradford, PA | Pass | State |
| 2024-09-24 | CARLISLE CONST MATLS/HUNTER PANEL PLT — high-priority violation on file | SMITHFIELD, Fayette, PA | Pass | State |
| 2024-09-24 | PERDUE AGRIBUSINESS LLC/BAINBRIDGE — high-priority violation on file | MARIETTA, Lancaster, PA | Pass | State |
| 2024-09-24 | EQT ARO LLC/LARRYS CREEK COMP STA | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2024-09-24 | REV LNG SSL BC LLC/NICHE LNG LLC - TOWANDA FAC | WYALUSING, Bradford, PA | Pass | State |
| 2024-09-24 | PHILADELPHIA CREMATORIES | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2024-09-24 | PHILADELPHIA CREMATORIES | PHILADELPHIA, Philadelphia, PA | Pending | Local |
| 2024-09-24 | ALGONQUIN GAS TRANSMISSION LINE | BURRILLVILLE, TOWN OF, Providence, RI | Pass | State |
| 2024-09-24 | WOONSOCKET WASTEWATER TREATMENT FACILITY | WOONSOCKET, Providence, RI | Pass | State |
| 2024-09-24 | SANTEE COOPER CROSS GENERATING STATION — high-priority violation on file | PINEVILLE, Berkeley, SC | Pass | State |
| 2024-09-24 | EXXONMOBIL OIL CORP. (EMOC) | MEMPHIS, Shelby, TN | Pass | Local |
| 2024-09-24 | TRANSMONTAIGNE OPERATING COMPANY L.P. - FAIRFAX TERMINAL | FAIRFAX, Fairfax (city), VA | Pass | State |
| 2024-09-24 | NORTHWEST PIPELINE CORP SUMAS | SUMAS, Whatcom, WA | Pass | Local |
| 2024-09-24 | APPALACHIA MIDSTREAM SERVICES, L.L.C., PIONEER FACILITY | WHEELING, Ohio, WV | Pass | State |
| 2024-09-24 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-09-24 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-09-23 | TARGA- CLARK'S CREEK COMPRESSOR STATION | KEENE, McKenzie, ND | Pass | U.S. EPA |
| 2024-09-23 | VERTEX REFINING ALABAMA LLC | SARALAND, Mobile, AL | Pass | State |
| 2024-09-23 | DESOTO GATHERING COMPANY, LLC - NE CHARLEY CPF-2 | DRASCO, Cleburne, AR | Pass | State |
| 2024-09-23 | DESOTO GATHERING COMPANY, LLC - NE CHARLEY CPF-2 | DRASCO, Cleburne, AR | Pass | State |
| 2024-09-23 | PLATTE RIVER BIOGAS - 19179 CR 49 | LA SALLE 6.4 MI. SE OF, Weld, CO | Pass | State |
| 2024-09-23 | DCP OPERATING CO - CROSSROADS FACILITY | KERSEY 5.0 MI. N OF, Weld, CO | Pass | State |
| 2024-09-23 | DCP OPERATING CO - CROSSROADS FACILITY | KERSEY 5.0 MI. N OF, Weld, CO | Pass | State |
| 2024-09-23 | CALPINE MID-ATLANTIC GENERATION-EDGE MOOR | WILMINGTON, New Castle, DE | Pass | State |
| 2024-09-23 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2024-09-23 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2024-09-23 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2024-09-23 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2024-09-23 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2024-09-23 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2024-09-23 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2024-09-23 | UNITED TACONITE LLC - FAIRLANE PLANT | FORBES, St. Louis, MN | Pass | State |
| 2024-09-23 | AMRIZE CEMENT INC | BLOOMSDALE, Ste. Genevieve, MO | Pass | State |
| 2024-09-23 | FLATHEAD ELECTRIC LFGE FACILITY | KALISPELL, Flathead, MT | Pass | State |
| 2024-09-23 | WILLISTON BASIN - FORT PECK STATION | NASHUA, Valley, MT | Pass | State |
| 2024-09-23 | CITY OF BISMARCK - BISMARCK LANDFILL - AQ | BISMARCK, Burleigh, ND | Fail | State |
| 2024-09-23 | OXY - CEDAR CANYON EAST COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-23 | OXY - CEDAR CANYON EAST COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-23 | POSEIDON CTB | JAL, Eddy, NM | Pass | State |
| 2024-09-23 | VALDEZ BOOSTER STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-23 | VALDEZ BOOSTER STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-23 | VICTORY COMPRESSOR STATION | LA HUERTA, Eddy, NM | Pass | State |
| 2024-09-23 | EOG - EL JEFE LGL STATION | JAL, Lea, NM | Pass | State |
| 2024-09-23 | GENIE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-09-23 | ASCENT RESOURCES - UTICA LLC - DONNA LND GR | LONDONDERRY, TOWNSHIP OF, Guernsey, OH | Pass | State |
| 2024-09-23 | ASCENT RESOURCES - UTICA LLC - DONNA LND GR | LONDONDERRY, TOWNSHIP OF, Guernsey, OH | Pass | State |
| 2024-09-23 | MARTIN MARIETTA - NEW MIAMI SAND AND GRAVEL | FAIRFIELD, Butler, OH | Pass | State |
| 2024-09-23 | DCP OPERATING CO LP / DEAN BOOSTER STATION | POCASSET, Grady, OK | Pass | State |
| 2024-09-23 | FW MIDCON I LLC / EMORY 1H 15X LUCILE 1H 27X LUCILE 1708 | KINGFISHER, Kingfisher, OK | Pass | State |
| 2024-09-23 | TALL OAK WOODFORD LLC / TREE HOUSE COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-09-23 | TALL OAK WOODFORD LLC / TREE HOUSE COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-09-23 | REGENCY MARCELLUS GAS GATHERING LLC/OGONTZ WEST COMP STA | CUMMINS TWP, Lycoming, PA | Pass | State |
| 2024-09-23 | WILLIAMS FIELD SVC CO LLC/CENTRAL COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-09-23 | VALERO MCKEE REFINERY — high-priority violation on file | SUNRAY, Moore, TX | N/A | State |
| 2024-09-23 | MUSTANG STATION | DENVER CITY, Yoakum, TX | N/A | State |
| 2024-09-23 | MUSTANG STATION | DENVER CITY, Yoakum, TX | N/A | State |
| 2024-09-23 | NORTHWEST PIPELINE CORP SUMAS | SUMAS, Whatcom, WA | Pass | Local |
| 2024-09-23 | BC ORGANICS LLC | GREENLEAF, Brown, WI | Pass | State |
| 2024-09-23 | KENDALL PACKAGING - JEFFERSON DIVISION | JEFFERSON, Jefferson, WI | Pass | State |
| 2024-09-23 | LINCOLN WOOD PRODUCTS | MERRILL, Lincoln, WI | Pass | State |
| 2024-09-23 | LOUISIANA-PACIFIC CORPORATION - HAYWARD | HAYWARD, Shawano, WI | Pass | State |
| 2024-09-23 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-09-22 | PREPA SOUTH COAST STEAM POWER PLANT | GUAYANILLA, Guayanilla, PR | Fail | State |
| 2024-09-21 | HILCORP ENERGY COMPANY | CREOLA, Mobile, AL | Pass | State |
| 2024-09-21 | HILCORP ENERGY COMPANY | CREOLA, Mobile, AL | Pass | State |
| 2024-09-21 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-21 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-21 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-21 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-21 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-21 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-21 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-21 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-21 | SHELL CHEM APPALACHIA/SHELL POLYMERS MONACA — high-priority violation on file | MONACA, Beaver, PA | Pass | State |
| 2024-09-20 | HILCORP ENERGY COMPANY | CREOLA, Mobile, AL | Pass | State |
| 2024-09-20 | MERIT ENERGY COMPANY, LLC - WILLIAMS COMPRESSOR STATION | OZARK, Franklin, AR | Pass | State |
| 2024-09-20 | MERIT ENERGY COMPANY, LLC - WILLIAMS COMPRESSOR STATION | OZARK, Franklin, AR | Pass | State |
| 2024-09-20 | MERIT ENERGY COMPANY, LLC - WILLIAMS COMPRESSOR STATION | OZARK, Franklin, AR | Pass | State |
| 2024-09-20 | SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file | COMMERCE CITY, Adams, CO | Pass | State |
| 2024-09-20 | TAMPA ELECTRIC COMPANY (TEC) | GIBSONTON, Hillsborough, FL | Pass | State |
| 2024-09-20 | WESTROCK CP, LLC | FERNANDINA BEACH, Nassau, FL | Pass | State |
| 2024-09-20 | KING'S HAWAIIAN BAKERY | FLOWERY BRANCH, Hall, GA | Pass | State |
| 2024-09-20 | IDEAL PELLETS | OGLETHORPE, Macon, GA | Pass | State |
| 2024-09-20 | IDEAL PELLETS | OGLETHORPE, Macon, GA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.