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 |
|---|---|---|---|---|
| 2023-12-26 | SUPERIOR MIDSTREAM LLC / CASHION NORTH BOOSTER STATION (WASWO) | CASHION, Logan, OK | Pass | State |
| 2023-12-26 | DCP OPERATING CO LP / SHOLEM GAS PLANT | VELMA, Stephens, OK | Pass | State |
| 2023-12-23 | NUCOR STEEL FLORIDA, INC. | FROSTPROOF, Polk, FL | Pass | State |
| 2023-12-23 | DOMINION - LADYSMITH CT STATION | WOODFORD, Caroline, VA | Pass | State |
| 2023-12-22 | NUCOR YAMATO STEEL COMPANY | BLYTHEVILLE, Mississippi, AR | Pass | State |
| 2023-12-22 | NUCOR YAMATO STEEL COMPANY | BLYTHEVILLE, Mississippi, AR | Pass | State |
| 2023-12-22 | NUCOR YAMATO STEEL COMPANY | BLYTHEVILLE, Mississippi, AR | Fail | State |
| 2023-12-22 | ARKANSAS BIOENERGY, LLC - RUSSELLVILLE | RUSSELLVILLE, Pope, AR | Pass | State |
| 2023-12-22 | WESTLAKE ROYAL ROOFING LLC | CORONA, Riverside, CA | N/A | Local |
| 2023-12-22 | FOSTER FOOD PRODUCTS — high-priority violation on file | LIVINGSTON, Merced, CA | Pass | Local |
| 2023-12-22 | FOSTER FOOD PRODUCTS — high-priority violation on file | LIVINGSTON, Merced, CA | Pass | Local |
| 2023-12-22 | CENTERSTREAM STL LLC | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2023-12-22 | MONMOUTH CNTY RECLAMATION CENTER | TINTON FALLS, Monmouth, NJ | Pass | State |
| 2023-12-22 | CORNING DIESEL MANUFACTURING FACILITY | PAINTED POST, Steuben, NY | Pass | State |
| 2023-12-22 | LUCK STONE - FAIRFIELD I-77 DEVELOPMENT | RIDGEWAY, Fairfield, SC | Pass | State |
| 2023-12-22 | KENNECOTT MAIN STACK, SMELTER AND | BINGHAM CANYON, Salt Lake, UT | Pass | State |
| 2023-12-22 | KENNECOTT MAIN STACK, SMELTER AND | BINGHAM CANYON, Salt Lake, UT | Pass | State |
| 2023-12-21 | DEMOPOLIS PELLETS, LLC | DEMOPOLIS, Marengo, AL | Pass | State |
| 2023-12-21 | BAKELITE CHEMICALS LLC. | CROSSETT, Ashley, AR | Pass | State |
| 2023-12-21 | NUCOR YAMATO STEEL COMPANY | BLYTHEVILLE, Mississippi, AR | Pass | State |
| 2023-12-21 | AIR PRODUCTS MANUFACTURING, LLC — high-priority violation on file | PARAMOUNT, Los Angeles, CA | Pass | Local |
| 2023-12-21 | PASADENA CITY, DWP (EIS USE) | PASADENA, Los Angeles, CA | Pass | Local |
| 2023-12-21 | BURBANK CITY, BURBANK WATER & POWER SCPP | BURBANK, Los Angeles, CA | Pass | Local |
| 2023-12-21 | COLTON POWER, LP | COLTON, San Bernardino, CA | Pass | Local |
| 2023-12-21 | COLTON POWER, LP | COLTON, San Bernardino, CA | Pass | Local |
| 2023-12-21 | SDG&E CUYAMACA PEAK ENERGY PLANT | EL CAJON, San Diego, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | O'NEILL BEVERAGES CO LLC | PARLIER, Fresno, CA | Pass | Local |
| 2023-12-21 | PEOPLES GAS LIGHT & COKE CO | FISHER, Champaign, IL | Pass | State |
| 2023-12-21 | DUKE ENERGY INDIANA LLC - GIBSON GENERATING STATION | OWENSVILLE, Gibson, IN | Pass | State |
| 2023-12-21 | PURDUE UNIVERSITY — high-priority violation on file | WEST LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2023-12-21 | NOVELIS | BEREA, Madison, KY | Pass | State |
| 2023-12-21 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2023-12-21 | MICHIGAN SUGAR COMPANY - SEBEWAING FACTORY — high-priority violation on file | SEBEWAING, Huron, MI | Pending | State |
| 2023-12-21 | FCA US LLC STERLING HEIGHTS ASSEMBLY PLANT | STERLING HEIGHTS, Macomb, MI | Pending | State |
| 2023-12-21 | MUSKEGON COUNTY SOLID WASTE FACILITY | RAVENNA, Muskegon, MI | Pending | State |
| 2023-12-21 | AMERICAN CRYSTAL SUGAR - EAST GRAND FORKS | EAST GRAND FORKS, Polk, MN | Pass | State |
| 2023-12-21 | AMERICAN CRYSTAL SUGAR - EAST GRAND FORKS | EAST GRAND FORKS, Polk, MN | Pass | State |
| 2023-12-21 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2023-12-21 | COLLINS TREE SERVICE PIT | NEWPORT, Carteret, NC | Pass | State |
| 2023-12-21 | KAO SPECIALTIES AMERICAS, LLC | HIGH POINT, Guilford, NC | Pass | State |
| 2023-12-21 | DAKOTA GASIFICATION COMPANY (DGC) - GREAT PLAINS SYNFUELS PLANT - AQ | BEULAH, Mercer, ND | Pass | State |
| 2023-12-21 | CARGILL INC — high-priority violation on file | BLAIR, Washington, NE | N/A | State |
| 2023-12-21 | GENIE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-12-21 | JAMES HARDIE BUILDING PRODUCTS, INC. | MCCARRAN, Storey, NV | Pass | State |
| 2023-12-21 | AMRIZE RAVENA FACILITY | COEYMANS, Albany, NY | Pass | State |
| 2023-12-21 | ASCENT RESOURCES - UTICA LLC - SHIPMAN WLS GR | LORE CITY, Guernsey, OH | Pass | State |
| 2023-12-21 | ASCENT RESOURCES - UTICA LLC - SHIPMAN WLS GR | LORE CITY, Guernsey, OH | Pass | State |
| 2023-12-21 | ASCENT RESOURCES - UTICA LLC - SHIPMAN WLS GR | LORE CITY, Guernsey, OH | Pass | State |
| 2023-12-21 | CATOOSA TEST FACILITY LLC / HALLETT TEST SITE | HALLETT, Pawnee, OK | Pass | State |
| 2023-12-21 | CATOOSA TEST FACILITY LLC / HALLETT TEST SITE | HALLETT, Pawnee, OK | Pass | State |
| 2023-12-21 | MARKWEST OKLAHOMA GAS CO LLC / MYER MOUNTAIN COMPRESSOR STATION — high-priority violation on file | SCIPIO, Pittsburg, OK | Pass | State |
| 2023-12-21 | TALL OAK WOODFORD LLC / SOLERA COMPRESSOR FACILITY | MCALESTER, Pittsburg, OK | Pass | State |
| 2023-12-21 | TENSION INTL / KING OF PRUSSIA | KING OF PRUSSIA, Montgomery, PA | Pass | State |
| 2023-12-21 | SWN PROD CO FIONDI SITE COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2023-12-21 | CPV FAIRVIEW LLC/FAIRVIEW ENERGY CTR — high-priority violation on file | JOHNSTOWN, Cambria, PA | Pass | State |
| 2023-12-21 | WARRINER, S PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2023-12-21 | CENTURY ALUMINUM OF SOUTH CAROLINA INC — high-priority violation on file | GOOSE CREEK, Berkeley, SC | Fail | State |
| 2023-12-21 | QUIKRETE CONSTRUCTION MATERIALS, LLC — high-priority violation on file | HARLEYVILLE, Dorchester, SC | Fail | State |
| 2023-12-21 | TENNESSEE ALUMINUM PROCESSORS,INC. | MOUNT PLEASANT, Maury, TN | Pass | State |
| 2023-12-21 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2023-12-21 | GAINESVILLE CROSSING DATA CAMPUS - GCDC | GAINESVILLE, Prince William, VA | Pass | State |
| 2023-12-21 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-12-21 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-12-21 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-12-21 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-12-20 | TARGA BADLANDS JUNCTION COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2023-12-20 | DEMOPOLIS PELLETS, LLC | DEMOPOLIS, Marengo, AL | Pass | State |
| 2023-12-20 | CARMEUSE LIME & STONE INC | SAGINAW, Shelby, AL | Pass | State |
| 2023-12-20 | WESTERN FOODS DELTA REGION | PINE BLUFF, Jefferson, AR | Pass | State |
| 2023-12-20 | STATE OF CALIFORNIA PRISON - SACRAMENTO | REPRESA, Sacramento, CA | Pass | Local |
| 2023-12-20 | NEW NGC, INC. | LONG BEACH, Los Angeles, CA | Pass | Local |
| 2023-12-20 | COLTON POWER, LP | COLTON, San Bernardino, CA | Pass | Local |
| 2023-12-20 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-12-20 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-12-20 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-12-20 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-12-20 | URBAN MINING CT LLC | BEACON FALLS, New Haven, CT | Pass | State |
| 2023-12-20 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2023-12-20 | VALERO RENEWABLE FUELS COMPANY. LLC D/B/A VALERO LAKOTA PLANT — high-priority violation on file | LAKOTA, Kossuth, IA | Pass | State |
| 2023-12-20 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2023-12-20 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2023-12-20 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2023-12-20 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2023-12-20 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2023-12-20 | REDDELL FIELD CENTRAL FACILITY | REDDELL, Evangeline, LA | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.