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 |
|---|---|---|---|---|
| 2024-12-11 | ET GATHERING PROCESSING LLC / F AND H COMPRESSOR STATION | WILBURTON, Latimer, OK | Pass | State |
| 2024-12-11 | TEXAS EASTERN TRANS LP/TE DELMONT COMP STA | GREENSBURG, Westmoreland, PA | Pass | State |
| 2024-12-11 | ROVER PIPELINE LLC/BULGER COMP STA | BULGER, Washington, PA | Pass | State |
| 2024-12-11 | UGI AUBURN GATHERING LLC/NORTHMORELAND COMP STA | DALLAS, Wyoming, PA | Pass | State |
| 2024-12-11 | ALLEGHENY ENERGY SUPPLY/SPRINGDALE | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2024-12-11 | NORTHWESTERN ENERGY PUBLIC SERVICE CORPORATION - ABERDEEN | ABERDEEN, Brown, SD | Pass | State |
| 2024-12-11 | ULTIUM CELLS LLC | CITY OF SPRING HILL, Maury, TN | Pass | State |
| 2024-12-11 | VALERO REFINING COMPANY-TN LLC | MEMPHIS, Shelby, TN | Pass | Local |
| 2024-12-11 | NORTHRUP GRUMMAN SYSTEMS - PROMONTORY (FORMERLY ATK) | PROMONTORY (HISTORICAL), Box Elder, UT | Pass | State |
| 2024-12-11 | WESTROCK VIRGINIA LLC - COVINGTON | COVINGTON, Covington (city), VA | Pass | State |
| 2024-12-11 | PACKAGING CORPORATION OF AMERICA — high-priority violation on file | WALLULA, Walla Walla, WA | Pass | State |
| 2024-12-11 | PACKAGING CORPORATION OF AMERICA — high-priority violation on file | WALLULA, Walla Walla, WA | Pass | State |
| 2024-12-11 | UNITED WISCONSIN GRAIN PRODUCERS, LLC — high-priority violation on file | FRIESLAND, Columbia, WI | Pass | State |
| 2024-12-11 | DELRIN USA, LLC, DELRIN USA - WASHINGTON WORKS | WASHINGTON, Wood, WV | Pass | State |
| 2024-12-11 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-12-11 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-12-11 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-12-10 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2024-12-10 | INTERNATIONAL PAPER COMPANY — high-priority violation on file | SELMA, Dallas, AL | Pass | State |
| 2024-12-10 | DCP MIDSTREAM | CODEN, Mobile, AL | Pass | State |
| 2024-12-10 | ALBEMARLE CORPORATION - WEST PLANT | MAGNOLIA, Columbia, AR | Pass | State |
| 2024-12-10 | DOMTAR A.W. LLC - ASHDOWN MILL — high-priority violation on file | ASHDOWN, Little River, AR | Pass | State |
| 2024-12-10 | DESOTO GATHERING COMPANY, LLC - MIDGE CPF-1 | SEARCY, White, AR | Pass | State |
| 2024-12-10 | DESOTO GATHERING COMPANY, LLC - MIDGE CPF-1 | SEARCY, White, AR | Pass | State |
| 2024-12-10 | ORANGE COUNTY SANITATION DISTRICT | HUNTINGTON BEACH, Orange, CA | Pass | Local |
| 2024-12-10 | ORANGE COUNTY SANITATION DISTRICT | HUNTINGTON BEACH, Orange, CA | Pass | Local |
| 2024-12-10 | SAN JOAQUIN REFINING CO — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-12-10 | SAN JOAQUIN REFINING CO — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-12-10 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-12-10 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-12-10 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-12-10 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-12-10 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-12-10 | DCP OPERATING CO - ROGGEN NGPP — high-priority violation on file | KEENESBURG 4.4 MI. E OF, Weld, CO | Pass | State |
| 2024-12-10 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2024-12-10 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2024-12-10 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2024-12-10 | CHRISTIANA CARE HEALTH SERVICES - CHRISTIANA HOSPITAL | NEWARK, New Castle, DE | Pass | State |
| 2024-12-10 | CHRISTIANA CARE HEALTH SERVICES - CHRISTIANA HOSPITAL | NEWARK, New Castle, DE | Pass | State |
| 2024-12-10 | CHRISTIANA CARE HEALTH SERVICES - CHRISTIANA HOSPITAL | NEWARK, New Castle, DE | Pass | State |
| 2024-12-10 | CHRISTIANA CARE HEALTH SERVICES - CHRISTIANA HOSPITAL | NEWARK, New Castle, DE | Pass | State |
| 2024-12-10 | CHRISTIANA CARE HEALTH SERVICES - CHRISTIANA HOSPITAL | NEWARK, New Castle, DE | Pass | State |
| 2024-12-10 | CHRISTIANA CARE HEALTH SERVICES - CHRISTIANA HOSPITAL | NEWARK, New Castle, DE | Pass | State |
| 2024-12-10 | CHRISTIANA CARE HEALTH SERVICES - CHRISTIANA HOSPITAL | NEWARK, New Castle, DE | Pass | State |
| 2024-12-10 | ORLANDO UTILITIES COMMISSION | ORLANDO, Orange, FL | Pass | State |
| 2024-12-10 | STERICYCLE, INC | APOPKA, Orange, FL | Pass | State |
| 2024-12-10 | STERICYCLE, INC | APOPKA, Orange, FL | Pass | State |
| 2024-12-10 | STERICYCLE, INC | APOPKA, Orange, FL | Pass | State |
| 2024-12-10 | STERICYCLE, INC | APOPKA, Orange, FL | Pass | State |
| 2024-12-10 | WASTE CONNECTIONS OF OSCEOLA COUNTY, LLC | SAINT CLOUD, Osceola, FL | Pass | State |
| 2024-12-10 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2024-12-10 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2024-12-10 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2024-12-10 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2024-12-10 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2024-12-10 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2024-12-10 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2024-12-10 | FLORIDA MUNICIPAL POWER AGENCY | BARTOW, Polk, FL | Pass | State |
| 2024-12-10 | INTERNATIONAL PAPER - FLINT RIVER MILL | OGLETHORPE, Macon, GA | Pass | State |
| 2024-12-10 | INTERNATIONAL PAPER - FLINT RIVER MILL | OGLETHORPE, Macon, GA | Pass | State |
| 2024-12-10 | INTERNATIONAL PAPER - FLINT RIVER MILL | OGLETHORPE, Macon, GA | Pass | State |
| 2024-12-10 | INTERNATIONAL PAPER - FLINT RIVER MILL | OGLETHORPE, Macon, GA | Pass | State |
| 2024-12-10 | INTERNATIONAL PAPER - FLINT RIVER MILL | OGLETHORPE, Macon, GA | Pass | State |
| 2024-12-10 | AG PROCESSING INC-MANNING | MANNING, Carroll, IA | Fail | State |
| 2024-12-10 | BIG RIVER UNITED ENERGY LLC-DYERSVILLE | DYERSVILLE, Dubuque, IA | Pass | State |
| 2024-12-10 | BIG RIVER UNITED ENERGY LLC-DYERSVILLE | DYERSVILLE, Dubuque, IA | Pass | State |
| 2024-12-10 | INTEGRATED DNA TECHNOLOGIES | CORALVILLE, Johnson, IA | Pass | State |
| 2024-12-10 | INTEGRATED DNA TECHNOLOGIES | CORALVILLE, Johnson, IA | Pass | State |
| 2024-12-10 | A-F ACQUISITION LLC DBA PULLMAN INNOVATIONS | CHICAGO, Cook, IL | N/A | U.S. EPA |
| 2024-12-10 | HINSDALE HOSPITAL | HINSDALE, DuPage, IL | Pass | State |
| 2024-12-10 | HINSDALE HOSPITAL | HINSDALE, DuPage, IL | Pass | State |
| 2024-12-10 | HINSDALE HOSPITAL | HINSDALE, DuPage, IL | Pass | State |
| 2024-12-10 | HINSDALE HOSPITAL | HINSDALE, DuPage, IL | Pass | State |
| 2024-12-10 | SOUTHERN ILLINOIS POWER COOP | MARION, Williamson, IL | Pass | State |
| 2024-12-10 | METAL X AUBURN | AUBURN, DeKalb, IN | Pass | State |
| 2024-12-10 | METAL X AUBURN | AUBURN, DeKalb, IN | Pass | State |
| 2024-12-10 | METAL X AUBURN | AUBURN, DeKalb, IN | Pass | State |
| 2024-12-10 | METAL X AUBURN | AUBURN, DeKalb, IN | Pass | State |
| 2024-12-10 | WAUPACA FOUNDRY INC PLANT 5 — high-priority violation on file | TELL CITY, Perry, IN | Pass | State |
| 2024-12-10 | WAUPACA FOUNDRY INC PLANT 5 — high-priority violation on file | TELL CITY, Perry, IN | Pass | State |
| 2024-12-10 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2024-12-10 | LOUISVILLE GAS & ELECTRIC COMPANY, MILL CREEK GENERATING STATION | LOUISVILLE, Jefferson, KY | Pass | Local |
| 2024-12-10 | LOUISVILLE GAS & ELECTRIC COMPANY, MILL CREEK GENERATING STATION | LOUISVILLE, Jefferson, KY | Pass | Local |
| 2024-12-10 | KENDALL GREEN ENERGY LLC | CAMBRIDGE, TOWN OF, Middlesex, MA | Pass | State |
| 2024-12-10 | CONSTELLATION WEST MEDWAY LLC | MEDWAY, Norfolk, MA | Pass | State |
| 2024-12-10 | YPSILANTI COMMUNITY UTILITIES AUTHORITY | YPSILANTI, Washtenaw, MI | Pass | State |
| 2024-12-10 | YPSILANTI COMMUNITY UTILITIES AUTHORITY | YPSILANTI, Washtenaw, MI | Pass | State |
| 2024-12-10 | SEBEWAING LIGHT AND WATER DEPARTMENT | SEBEWAING, Huron, MI | Pass | State |
| 2024-12-10 | POET BIOREFINING LAKE CRYSTAL LLC | LAKE CRYSTAL, Blue Earth, MN | Pass | State |
| 2024-12-10 | FLINT HILLS RESOURCES PINE BEND REFINERY | ROSEMOUNT, Dakota, MN | Pass | State |
| 2024-12-10 | OWENS-CORNING STATELINE | JOPLIN, Jasper, MO | N/A | State |
| 2024-12-10 | COLLINS TREE SERVICE PIT | NEWPORT, Carteret, NC | Pass | State |
| 2024-12-10 | CITY OF HIGH POINT - EASTSIDE WASTEWATER TREATMENT PLANT | JAMESTOWN, Guilford, NC | Pass | State |
| 2024-12-10 | UWHARRIE MOUNTAIN RENEWABLE ENERGY, LLC | MOUNT GILEAD, Montgomery, NC | Pending | State |
| 2024-12-10 | TOYOTA BATTERY MFG. INC. DBA TOYOTA BATTERY MANUFACTURING NC | LIBERTY, Randolph, NC | Pass | State |
| 2024-12-10 | HESS TIOGA GAS PLANT LLC - TIOGA GAS PLANT - AQ | TIOGA, Williams, ND | Pass | State |
| 2024-12-10 | BLOSSOM COMPRESSOR STATION | CARLSBAD, Eddy, NM | Pass | State |
| 2024-12-10 | BLOSSOM COMPRESSOR STATION | CARLSBAD, Eddy, NM | Pass | State |
| 2024-12-10 | JANIE CONNER FACILITY — high-priority violation on file | MALAGA, Eddy, NM | Pass | State |
| 2024-12-10 | BULLDOG COMPRESSOR STATION | LOCO HILLS, Eddy, NM | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.