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 |
|---|---|---|---|---|
| 2021-10-20 | DIVERSIFIED PRODUCTION LLC / SHASTA 1106 4LMH 28 5LMH 28 | UNION CITY, Canadian, OK | Pass | State |
| 2021-10-20 | ET GATHERING PROCESSING LLC / PURDY COMPRESSOR STATION | PURDY, Garvin, OK | Pass | State |
| 2021-10-20 | ET GATHERING PROCESSING LLC / SOLDIER COMPRESSOR STATION | BRADLEY, Grady, OK | Pass | State |
| 2021-10-20 | ET GATHERING PROCESSING LLC / NINNEKAH COMPRESSOR STATION | NINNEKAH, Grady, OK | Pass | State |
| 2021-10-20 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2021-10-20 | ONEOK GAS STORAGE LLC / HASKELL STORAGE FACILITY | HASKELL, Muskogee, OK | Pass | State |
| 2021-10-20 | PUBLIC SERVICE COMPANY OF OKLAHOMA / PSO NORTHEASTERN POWER STATION — high-priority violation on file | OOLOGAH, Rogers, OK | Pass | State |
| 2021-10-20 | TENNESSEE GAS PIPELINE CO/313 COUDERSPORT | COUDERSPORT, Potter, PA | Fail | State |
| 2021-10-20 | EASTERN GAS TRANS & STORAGE INC/FINNEFROCK STA | RENOVO, Clinton, PA | Pass | State |
| 2021-10-20 | AMER REF GROUP/BRADFORD | BRADFORD, McKean, PA | Pass | State |
| 2021-10-20 | ENERGY DEVS HONEY BROOK LLC/CAERNARVON TWP | NARVON, Lancaster, PA | Pass | State |
| 2021-10-20 | EQM GATHERING OPCO LLC/PETTIT COMP STA | HOLBROOK, Greene, PA | Pass | State |
| 2021-10-20 | MARKWEST LIBERTY MIDSTREAM RES/DOWN HOME COMPRESSOR STATION | ROBINSON TWP, Washington, PA | Pass | State |
| 2021-10-20 | PINE RUN MIDSTREAM LLC/BICKER COMP STA | CABOT, Butler, PA | Pass | State |
| 2021-10-20 | QUIKRETE CONSTRUCTION MATERIALS, LLC — high-priority violation on file | HARLEYVILLE, Dorchester, SC | Pass | State |
| 2021-10-20 | TENNESSEE VALLEY AUTHORITY - GALLATIN FOSSIL PLANT | GALLATIN, Sumner, TN | Pass | State |
| 2021-10-20 | SIGNAL MOUNTAIN CEMENT COMPANY D/B/A BUZZI UNICEM USA | CHATTANOOGA, Hamilton, TN | Pass | Local |
| 2021-10-20 | SIGNAL MOUNTAIN CEMENT COMPANY D/B/A BUZZI UNICEM USA | CHATTANOOGA, Hamilton, TN | Pass | Local |
| 2021-10-20 | CHEVRON PHILLIPS CHEMICAL PORT ARTHUR FACILITY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-20 | CHEVRON PHILLIPS CHEMICAL PORT ARTHUR FACILITY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-20 | CHEVRON PHILLIPS CHEMICAL PORT ARTHUR FACILITY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-20 | CHEVRON PHILLIPS CHEMICAL PORT ARTHUR FACILITY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-20 | CHEVRON PHILLIPS CHEMICAL PORT ARTHUR FACILITY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-20 | INGENCO - AMELIA | JETERSVILLE, Amelia, VA | Pass | State |
| 2021-10-20 | BURLINGTON (CITY OF) BED JOSEPH C MCNEIL ELECTRIC GENERATING STATION — high-priority violation on file | BURLINGTON, Chittenden, VT | Pass | State |
| 2021-10-20 | APPALACHIAN POWER COMPANY, JOHN AMOS PLANT | WINFIELD, Putnam, WV | Pass | State |
| 2021-10-20 | WORLAND COMPRESSOR STATION (WBI ENERGY TRANSMISSION) | WORLAND, Washakie, WY | Pass | State |
| 2021-10-19 | DOYON UTILITIES, LLC / FORT WAINWRIGHT (PRIVATIZED EMISSION UN | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2021-10-19 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2021-10-19 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2021-10-19 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2021-10-19 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2021-10-19 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | SWEET WATER, Marengo, AL | Pass | State |
| 2021-10-19 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | SWEET WATER, Marengo, AL | Pass | State |
| 2021-10-19 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | SWEET WATER, Marengo, AL | Pass | State |
| 2021-10-19 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | SWEET WATER, Marengo, AL | Pass | State |
| 2021-10-19 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2021-10-19 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2021-10-19 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2021-10-19 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2021-10-19 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2021-10-19 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2021-10-19 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2021-10-19 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2021-10-19 | GP CELLULOSE ALABAMA RIVER CELLULOSE LLC | PERDUE HILL, Monroe, AL | Pass | State |
| 2021-10-19 | GP CELLULOSE ALABAMA RIVER CELLULOSE LLC | PERDUE HILL, Monroe, AL | Pass | State |
| 2021-10-19 | SANDERS LEAD CO | TROY, Pike, AL | Pass | State |
| 2021-10-19 | SANDERS LEAD CO | TROY, Pike, AL | Pass | State |
| 2021-10-19 | DESOTO GATHERING COMPANY, LLC - NEW QUITMAN CPF-1 | QUITMAN, Faulkner, AR | Pass | State |
| 2021-10-19 | DESOTO GATHERING COMPANY, LLC - NEW QUITMAN CPF-2 | QUITMAN, Faulkner, AR | Pass | State |
| 2021-10-19 | CITY OF DARDANELLE — high-priority violation on file | DARDANELLE, Yell, AR | Pass | State |
| 2021-10-19 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-19 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-19 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-19 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-19 | ROCKIES EXPRESS PIPELINE LLC - MEEKER | MEEKER 21.0 MI. N OF, Rio Blanco, CO | Pass | State |
| 2021-10-19 | ROCKIES EXPRESS PIPELINE LLC - MEEKER | MEEKER 21.0 MI. N OF, Rio Blanco, CO | Pass | State |
| 2021-10-19 | DCP OPERATING CO - GREELEY NATURAL GAS P | EVANS AREA, Weld, CO | Pass | State |
| 2021-10-19 | DCP OPERATING CO - GREELEY NATURAL GAS P | EVANS AREA, Weld, CO | Pass | State |
| 2021-10-19 | DCP OPERATING CO - GREELEY NATURAL GAS P | EVANS AREA, Weld, CO | Pass | State |
| 2021-10-19 | DCP OPERATING CO - GREELEY NATURAL GAS P | EVANS AREA, Weld, CO | Pass | State |
| 2021-10-19 | CRODA, INC — high-priority violation on file | NEW CASTLE, New Castle, DE | Pass | State |
| 2021-10-19 | CRODA, INC — high-priority violation on file | NEW CASTLE, New Castle, DE | Pass | State |
| 2021-10-19 | MIAMI-DADE WATER AND SEWER DEPARTMENT | MIAMI, Miami-Dade, FL | Pass | State |
| 2021-10-19 | ASCEND PERFORMANCE MATERIALS OPERATIONS — high-priority violation on file | CANTONMENT, Escambia, FL | Pass | State |
| 2021-10-19 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-19 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-19 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-19 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-10-19 | CEMEX CONSTRUCTION MATERIALS FLORIDA,LLC | BROOKSVILLE, Hernando, FL | Pass | State |
| 2021-10-19 | CEMEX CONSTRUCTION MATERIALS FLORIDA,LLC | BROOKSVILLE, Hernando, FL | Pass | State |
| 2021-10-19 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-19 | OCONEE METAL RECOVERY | COVINGTON, Newton, GA | Pass | State |
| 2021-10-19 | OCONEE METAL RECOVERY | COVINGTON, Newton, GA | Pass | State |
| 2021-10-19 | HECO - WAIAU | PEARL CITY, Honolulu, HI | Pass | State |
| 2021-10-19 | MILNER BUTTE LANDFILL | BURLEY, Cassia, ID | Pass | State |
| 2021-10-19 | STAKER AND PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION 00406 | MERIDIAN, Ada, ID | Pass | State |
| 2021-10-19 | KNIFE RIVER CORP - MTN WEST 00514 | BOISE, Ada, ID | Pass | State |
| 2021-10-19 | A FINKL & SONS CO | CHICAGO, Cook, IL | Fail | State |
| 2021-10-19 | CARUS LLC | LASALLE, La Salle, IL | Pass | State |
| 2021-10-19 | ATLAS FOUNDRY COMPANY INC | MARION, Grant, IN | Pass | State |
| 2021-10-19 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2021-10-19 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2021-10-19 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2021-10-19 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2021-10-19 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2021-10-19 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2021-10-19 | AMPACET CORPORATION | TERRE HAUTE, Vigo, IN | Pass | State |
| 2021-10-19 | AMPACET CORPORATION | TERRE HAUTE, Vigo, IN | Pass | State |
| 2021-10-19 | AMPACET CORPORATION | TERRE HAUTE, Vigo, IN | Pass | State |
| 2021-10-19 | AMPACET CORPORATION | TERRE HAUTE, Vigo, IN | Pass | State |
| 2021-10-19 | EVERGY - LA CYGNE (AIR) | LA CYGNE, Linn, KS | Pass | State |
| 2021-10-19 | TOYOTA MOTOR MANUFACTURING, KENTUCKY | GEORGETOWN (SCOTT), Scott, KY | Pass | State |
| 2021-10-19 | TEXAS GAS TRANSMISSION LLC - SLAUGHTERS COMPRESSOR | SLAUGHTERS, Webster, KY | Pass | State |
| 2021-10-19 | SHELL CHEMICAL LP - GEISMAR PLANT | GEISMAR, Ascension, LA | Pass | State |
| 2021-10-19 | WELLESLEY COLLEGE | WELLESLEY, TOWN OF, Norfolk, MA | Pass | State |
| 2021-10-19 | TISBURY TOWING & TRANSPORTATION | NEW BEDFORD, Bristol, MA | Pass | State |
| 2021-10-19 | GREAT LAKES CASTINGS LLC | LUDINGTON, Mason, MI | Pass | State |
| 2021-10-19 | DOW SILICONES CORPORATION | MIDLAND, Midland, MI | Pass | State |
| 2021-10-19 | FORD MOTOR COMPANY WAYNE COMPLEX | WAYNE, Wayne, MI | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.