EPA Air · stack tests by year
Air-emissions stack tests in 2021
- 35,950Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2021
- California 17,676
- Ohio 2,582
- Florida 1,540
- Indiana 1,495
- Oklahoma 1,318
- Georgia 1,189
- New Mexico 841
- Pennsylvania 788
- Alabama 621
- Mississippi 589
- Texas 574
- Arkansas 518
- Missouri 515
- Colorado 407
- Iowa 368
- Washington 334
- North Carolina 273
- Michigan 256
- Wisconsin 239
- Wyoming 235
- West Virginia 225
- Kentucky 222
- Delaware 222
- Montana 220
- South Carolina 217
- Minnesota 209
- Kansas 177
- Alaska 143
- Illinois 142
- Utah 140
- Nevada 136
- Virginia 131
- Nebraska 117
- Maine 110
- New Jersey 110
- New York 103
- Connecticut 99
- Tennessee 98
- North Dakota 93
- Arizona 93
- Idaho 90
- Louisiana 69
- Hawaii 64
- Maryland 56
- South Dakota 55
- District of Columbia 54
- New Hampshire 53
- Oregon 45
- Rhode Island 34
- Massachusetts 29
- Puerto Rico 19
- Vermont 17
Other years
Air-emissions stack tests recorded in 2021
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2021-11-16 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-16 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-16 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-16 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-16 | FLORIDA POWER & LIGHT | FORT MYERS, Lee, FL | Pass | State |
| 2021-11-16 | FLORIDA POWER & LIGHT | FORT MYERS, Lee, FL | Pass | State |
| 2021-11-16 | LANGBOARD OSB, QUITMAN | QUITMAN, Brooks, GA | Pass | State |
| 2021-11-16 | LANGBOARD OSB, QUITMAN | QUITMAN, Brooks, GA | Pass | State |
| 2021-11-16 | GA POWER CO PLT MCINTOSH | RINCON, Effingham, GA | Pass | State |
| 2021-11-16 | GA POWER CO PLT MCINTOSH | RINCON, Effingham, GA | Pass | State |
| 2021-11-16 | GA POWER CO PLT MCINTOSH | RINCON, Effingham, GA | Pass | State |
| 2021-11-16 | GA POWER CO PLT MCINTOSH | RINCON, Effingham, GA | Pass | State |
| 2021-11-16 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-16 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-16 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-16 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-16 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-16 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-16 | VALERO RENEWABLE FUELS LLC-CHARLES CITY | CHARLES CITY, Floyd, IA | Pass | State |
| 2021-11-16 | LOUIS DREYFUS COMPANY GRAND JUNCTION, LLC | GRAND JUNCTION, Greene, IA | Pass | State |
| 2021-11-16 | NATURALLY RECYCLED PROTEINS OF IOWA LLC | STEAMBOAT ROCK, Hardin, IA | Pass | State |
| 2021-11-16 | ITAFOS CONDA LLC - TV FACILITY | SODA SPRINGS, Caribou, ID | Pass | State |
| 2021-11-16 | HINSDALE HOSPITAL | HINSDALE, DuPage, IL | Pass | State |
| 2021-11-16 | DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file | WARSAW, Kosciusko, IN | Pass | State |
| 2021-11-16 | DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file | WARSAW, Kosciusko, IN | Pass | State |
| 2021-11-16 | DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file | WARSAW, Kosciusko, IN | Pass | State |
| 2021-11-16 | DALTON CORPORATION WARSAW MANUFACTURING FACILITY — high-priority violation on file | WARSAW, Kosciusko, IN | Pass | State |
| 2021-11-16 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-11-16 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-11-16 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-11-16 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2021-11-16 | ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file | NEWBURGH, Warrick, IN | Pass | State |
| 2021-11-16 | EVONIK CORP - HAYSVILLE (AIR) | HAYSVILLE, Sedgwick, KS | Pass | State |
| 2021-11-16 | PMC ORGANOMETALLIX INC | CARROLLTON, Carroll, KY | Pass | State |
| 2021-11-16 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2021-11-16 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2021-11-16 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2021-11-16 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2021-11-16 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2021-11-16 | VICINITY ENERGY LLC | BOSTON, CITY OF, Suffolk, MA | Pass | State |
| 2021-11-16 | WESTERN MICHIGAN UNIVERSITY | KALAMAZOO, Kalamazoo, MI | Pass | State |
| 2021-11-16 | IIP-MI 4, LLC | WARREN, Macomb, MI | Pass | State |
| 2021-11-16 | AMERICAN CRYSTAL SUGAR - MOORHEAD — high-priority violation on file | MOORHEAD, Clay, MN | Pass | State |
| 2021-11-16 | MMPA SHAKOPEE ENERGY PARK | SHAKOPEE, Scott, MN | Pass | State |
| 2021-11-16 | EVERGY-LAKE ROAD GENERATING STATION | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2021-11-16 | METROPOLITAN ST. LOUIS SEWER DISTRICT | SAINT LOUIS COUNTY, St. Louis, MO | Pass | State |
| 2021-11-16 | METROPOLITAN ST. LOUIS SEWER DISTRICT BISSELL POINT WWTP | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2021-11-16 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2021-11-16 | WILLISTON BASIN - SACO | SACO, Phillips, MT | Pass | State |
| 2021-11-16 | WILLISTON BASIN - SACO | SACO, Phillips, MT | Pass | State |
| 2021-11-16 | WILLISTON BASIN - SACO | SACO, Phillips, MT | Pass | State |
| 2021-11-16 | WILLISTON BASIN - SACO | SACO, Phillips, MT | Pass | State |
| 2021-11-16 | CORNING INCORPORATED - MIDLAND | MIDLAND, Cabarrus, NC | Pass | State |
| 2021-11-16 | CORNING INCORPORATED - MIDLAND | MIDLAND, Cabarrus, NC | Pass | State |
| 2021-11-16 | PLEASANT HILL COMPRESSOR STATION | PLEASANT HILL, Northampton, NC | Pass | State |
| 2021-11-16 | CHARLOTTE PIPE & FOUNDRY | CHARLOTTE, Mecklenburg, NC | Pass | Local |
| 2021-11-16 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-11-16 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-11-16 | NORTHERN NATURAL GAS COMPANY | HOMER, Dakota, NE | Pass | State |
| 2021-11-16 | NPPD GERALD GENTLEMAN STATION | SUTHERLAND, Lincoln, NE | Pass | State |
| 2021-11-16 | NPPD GERALD GENTLEMAN STATION | SUTHERLAND, Lincoln, NE | Pass | State |
| 2021-11-16 | SPARTAN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-16 | SPARTAN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-16 | BLUE QUAIL COMPRESSOR STATION | LOCO HILLS, Eddy, NM | Pass | State |
| 2021-11-16 | BLUE QUAIL COMPRESSOR STATION | LOCO HILLS, Eddy, NM | Pass | State |
| 2021-11-16 | NORTH VALMY GENERATING STATION | VALMY, Humboldt, NV | Pass | State |
| 2021-11-16 | EASTERN GAS TRANSMISSION AND STORAGE, INC. | WASHINGTON COURT HOUSE, Fayette, OH | Pass | State |
| 2021-11-16 | EASTERN GAS TRANSMISSION AND STORAGE, INC. | WASHINGTON COURT HOUSE, Fayette, OH | Pass | State |
| 2021-11-16 | DARBY POWER, LLC | OHIO, Undetermined, OH | Pass | State |
| 2021-11-16 | GENERAL JAMES M. GAVIN POWER PLANT | CHESHIRE, Gallia, OH | Pass | State |
| 2021-11-16 | GREIF - CINCINNATI PAPERBOARD | CINCINNATI, Hamilton, OH | Pass | State |
| 2021-11-16 | ET GATHERING PROCESSING LLC / HYDRO COMPRESSOR STATION | HYDRO, Blaine, OK | Pass | State |
| 2021-11-16 | ET GATHERING PROCESSING LLC / HYDRO COMPRESSOR STATION | HYDRO, Blaine, OK | Pass | State |
| 2021-11-16 | MARKWEST OKLAHOMA GAS CO LLC / OKARCHE COMPRESSOR STATION | OKARCHE, Canadian, OK | Pass | State |
| 2021-11-16 | MARKWEST OKLAHOMA GAS CO LLC / OKARCHE COMPRESSOR STATION | OKARCHE, Canadian, OK | Pass | State |
| 2021-11-16 | HOWARD ENERGY PARTNERS / CALUMET COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2021-11-16 | HOWARD ENERGY PARTNERS / CALUMET COMPRESSOR STATION | EL RENO, Canadian, OK | Pass | State |
| 2021-11-16 | DCP OPERATING CO LP / WILD HOG BOOSTER STATION | BRADLEY, Grady, OK | Pass | State |
| 2021-11-16 | DCP OPERATING CO LP / WILD HOG BOOSTER STATION | BRADLEY, Grady, OK | Pass | State |
| 2021-11-16 | DCP OPERATING CO LP / WILD HOG BOOSTER STATION | BRADLEY, Grady, OK | Pass | State |
| 2021-11-16 | ET GATHERING PROCESSING LLC / WILBURTON GATHERING STATION | WILBURTON, Latimer, OK | Pass | State |
| 2021-11-16 | OG AND E / RIVER VALLEY GENERATING STATION | PANAMA, Le Flore, OK | Pass | State |
| 2021-11-16 | PRYOR ASPHALT LLC / PRYOR ASPHALT — high-priority violation on file | PRYOR, Mayes, OK | Pass | State |
| 2021-11-16 | PEOPLES GAS CO LLC/KINTER STA | INDIANA, Indiana, PA | Pass | State |
| 2021-11-16 | TRANSCONTINENTAL GAS/JACKSON TWP STA 517 | BENTON, Columbia, PA | Pass | State |
| 2021-11-16 | TEXAS EASTERN TRANS LP/GRANTVILLE | GRANTVILLE, Dauphin, PA | Pass | State |
| 2021-11-16 | MAINESBURG GS LP/WELLS COMP STA | COVINGTON, Tioga, PA | Fail | State |
| 2021-11-16 | SOUTHWESTERN ENERGY CO/SCARLET OAK 1H | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2021-11-16 | EXPAND OPERATING LLC/ROSIEMAR SUS PAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2021-11-16 | TEMPLE UNIV/ MAIN CAMPUS — high-priority violation on file | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2021-11-16 | TEMPLE UNIV/ MAIN CAMPUS — high-priority violation on file | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2021-11-16 | TEMPLE UNIV/ MAIN CAMPUS — high-priority violation on file | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2021-11-16 | GLACIAL LAKES ENERGY LLC | WATERTOWN, Codington, SD | Pass | State |
| 2021-11-16 | MULTICARE HEALTH SYSTEM | TACOMA, Pierce, WA | Pass | Local |
| 2021-11-16 | MULTICARE HEALTH SYSTEM | TACOMA, Pierce, WA | Pass | Local |
| 2021-11-16 | MULTICARE HEALTH SYSTEM | TACOMA, Pierce, WA | Pass | Local |
| 2021-11-16 | 3M CO - GREYSTONE — high-priority violation on file | WAUSAU, Marathon, WI | Pass | State |
| 2021-11-16 | GREDE - REEDSBURG LLC | REEDSBURG, Sawyer, WI | Pass | State |
| 2021-11-16 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2021-11-16 | MONONGAHELA POWER COMPANY, FORT MARTIN STATION | MAIDSVILLE, Monongalia, WV | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.