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 |
|---|---|---|---|---|
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-18 | U.S. GOVERNMENT PUBLISHING OFFICE | WASHINGTON, District of Columbia, DC | Pass | State |
| 2021-11-18 | ORIENT CORPORATION OF AMERICA | SEAFORD, Sussex, DE | Pass | State |
| 2021-11-18 | ORIENT CORPORATION OF AMERICA | SEAFORD, Sussex, DE | Pass | State |
| 2021-11-18 | ORIENT CORPORATION OF AMERICA | SEAFORD, Sussex, DE | Pass | State |
| 2021-11-18 | ORIENT CORPORATION OF AMERICA | SEAFORD, Sussex, DE | Pass | State |
| 2021-11-18 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-11-18 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-18 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-18 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-18 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-18 | MOSAIC FERTILIZER, LLC — high-priority violation on file | BARTOW, Polk, FL | Pass | State |
| 2021-11-18 | GA POWER CO PLT MCINTOSH | RINCON, Effingham, GA | Pass | State |
| 2021-11-18 | GA POWER CO PLT MCINTOSH | RINCON, Effingham, GA | Pass | State |
| 2021-11-18 | GA POWER CO PLT MCINTOSH | RINCON, Effingham, GA | Pass | State |
| 2021-11-18 | GA POWER CO PLT MCINTOSH | RINCON, Effingham, GA | Pass | State |
| 2021-11-18 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-18 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-18 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-18 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-18 | AES HAWAII | KAPOLEI, Honolulu, HI | Pass | State |
| 2021-11-18 | HC&D - PUUNENE | PUUNENE, Maui, HI | Pass | State |
| 2021-11-18 | VALERO RENEWABLE FUELS LLC-CHARLES CITY | CHARLES CITY, Floyd, IA | Pass | State |
| 2021-11-18 | VALERO RENEWABLE FUELS LLC-CHARLES CITY | CHARLES CITY, Floyd, IA | Pass | State |
| 2021-11-18 | LOUIS DREYFUS COMPANY GRAND JUNCTION, LLC | GRAND JUNCTION, Greene, IA | Pass | State |
| 2021-11-18 | NORTH SHORE GAS CO | LIBERTYVILLE, Lake, IL | Pass | State |
| 2021-11-18 | WAYNE ASPHALT & CONSTRUCTION CO INC | FORT WAYNE, Allen, IN | Pass | State |
| 2021-11-18 | WAYNE ASPHALT & CONSTRUCTION CO INC | FORT WAYNE, Allen, IN | Pass | State |
| 2021-11-18 | WAYNE ASPHALT & CONSTRUCTION CO INC | FORT WAYNE, Allen, IN | Pass | State |
| 2021-11-18 | WAYNE ASPHALT & CONSTRUCTION CO INC | FORT WAYNE, Allen, IN | Pass | State |
| 2021-11-18 | CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file | EAST CHICAGO, Lake, IN | Pass | State |
| 2021-11-18 | ECOBAT RESOURCES INDIANA LLC | INDIANAPOLIS, Marion, IN | Pass | State |
| 2021-11-18 | HARSHMAN CONST. - HOWARD QUARRY (AIR) | HOWARD, Elk, KS | Pass | State |
| 2021-11-18 | HARSHMAN CONST. - HOWARD QUARRY (AIR) | HOWARD, Elk, KS | Pass | State |
| 2021-11-18 | BONANZA BIOENERGY (AIR) | GARDEN CITY, Finney, KS | Pass | State |
| 2021-11-18 | HARSHMAN CONST (MASTER EQUIP LIST) (AIR) | CEDAR POINT, Marion, KS | Pass | State |
| 2021-11-18 | HARSHMAN CONST (MASTER EQUIP LIST) (AIR) | CEDAR POINT, Marion, KS | Pass | State |
| 2021-11-18 | ELEMENT MATERIALS TECHNOLOGY TRANSPORTATION US LLC | BOWLING GREEN, Warren, KY | Pass | State |
| 2021-11-18 | KOCH METHANOL ST JAMES LLC - KOCH METHANOL FACILITY | ST. JAMES, St. James, LA | Pass | State |
| 2021-11-18 | RUMFORD POWER LLC | RUMFORD, Oxford, ME | Pass | State |
| 2021-11-18 | T&D WOOD ENERGY LLC — high-priority violation on file | SANFORD, York, ME | Fail | State |
| 2021-11-18 | THE DOW CHEMICAL COMPANY U.S.A., MIDLAND — high-priority violation on file | MIDLAND, Midland, MI | Pass | State |
| 2021-11-18 | SMMPA METHANE ENERGY FACILITY | MORA, Kanabec, MN | Pass | State |
| 2021-11-18 | UNITED TACONITE LLC - FAIRLANE PLANT | FORBES, St. Louis, MN | Pass | State |
| 2021-11-18 | ALLIED WASTE SYSTEMS | MISSOULA, Missoula, MT | Pass | State |
| 2021-11-18 | COLSTRIP ENERGY LTD PARTNERSHIP | COLSTRIP, Rosebud, MT | Pass | State |
| 2021-11-18 | COLSTRIP ENERGY LTD PARTNERSHIP | COLSTRIP, Rosebud, MT | Pass | State |
| 2021-11-18 | CITY OF FARGO, DIVISION OF SOLID WASTE - FARGO SANITARY LANDFILL - AQ | FARGO, Cass, ND | Pass | State |
| 2021-11-18 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-11-18 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-11-18 | DAKOTA GASIFICATION COMPANY (DGC) - GREAT PLAINS SYNFUELS PLANT - AQ | BEULAH, Mercer, ND | Pass | State |
| 2021-11-18 | WBI ENERGY TRANSMISSION, INC. - GLEN ULLIN COMPRESSOR STATION - AQ | GLEN ULLIN, Morton, ND | Pass | State |
| 2021-11-18 | WBI ENERGY TRANSMISSION, INC. - GLEN ULLIN COMPRESSOR STATION - AQ | GLEN ULLIN, Morton, ND | Pass | State |
| 2021-11-18 | AMERICAN CRYSTAL SUGAR COMPANY (ACS) - DRAYTON PLANT - AQ | DRAYTON, Pembina, ND | Pass | State |
| 2021-11-18 | SHELL OIL PRODUCTS US NEWARK | NEWARK, Essex, NJ | Pass | State |
| 2021-11-18 | NEWARK ENERGY CENTER | NEWARK, Essex, NJ | Pass | State |
| 2021-11-18 | NEWARK ENERGY CENTER | NEWARK, Essex, NJ | Pass | State |
| 2021-11-18 | PHILLIPS 66 (BAYWAY REF/CONOCO) — high-priority violation on file | LINDEN, Union, NJ | Pass | State |
| 2021-11-18 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-18 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-18 | SPARTAN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-18 | SPARTAN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-18 | JEFF HART EAST TB | JAL, Lea, NM | Pass | State |
| 2021-11-18 | RIGHT MEOW 31 CTB 7 | MALAGA, Lea, NM | Pass | State |
| 2021-11-18 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2021-11-18 | LONG ISLAND JEWISH MEDICAL CENTER | NEW HYDE PARK, Queens, NY | Pass | State |
| 2021-11-18 | AKZO NOBEL COATINGS, INC. | COLUMBUS, Franklin, OH | Pass | State |
| 2021-11-18 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-11-18 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-11-18 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-11-18 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-11-18 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-11-18 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-11-18 | HOWARD ENERGY PARTNERS / BENNINGTON COMPRESSOR STATION | BENNINGTON, Bryan, OK | Pass | State |
| 2021-11-18 | HOWARD ENERGY PARTNERS / BENNINGTON COMPRESSOR STATION | BENNINGTON, Bryan, OK | Pass | State |
| 2021-11-18 | VALIDUS ENERGY II MIDCON LLC / ESTES PAD | UNION CITY, Canadian, OK | Pass | State |
| 2021-11-18 | FW MIDCON I LLC / HYDEN 1914 1H 17X | SEILING, Dewey, OK | Pass | State |
| 2021-11-18 | EOG RESOURCES INC / LIVINGSTON CTB | BLANCHARD, Grady, OK | Pass | State |
| 2021-11-18 | MARKWEST OKLAHOMA GAS CO LLC / DOROTHY COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-11-18 | MARKWEST OKLAHOMA GAS CO LLC / DOVER COMPRESSOR STATION | DOVER, Kingfisher, OK | Pass | State |
| 2021-11-18 | AMER REF GROUP/BRADFORD | BRADFORD, McKean, PA | Pass | State |
| 2021-11-18 | TEXAS EASTERN TRANS LP/BERNVILLE STA | BERNVILLE, Berks, PA | Pass | State |
| 2021-11-18 | CPV FAIRVIEW LLC/FAIRVIEW ENERGY CTR — high-priority violation on file | JOHNSTOWN, Cambria, PA | Fail | State |
| 2021-11-18 | PA GEN ENERGY CO LLC/REED RUN STILL PAD A COMP STA — high-priority violation on file | SMETHPORT, McKean, PA | Pass | State |
| 2021-11-18 | PROVIDENCE COLLEGE — high-priority violation on file | PROVIDENCE, Providence, RI | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.