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 |
|---|---|---|---|---|
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-10-03 | PUBLIC SERVICE CO - COMANCHE PLT — high-priority violation on file | PUEBLO, Pueblo, CO | Pass | State |
| 2023-10-03 | PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file | GREELEY AREA, Weld, CO | Pass | State |
| 2023-10-03 | PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file | GREELEY AREA, Weld, CO | Fail | State |
| 2023-10-03 | PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file | GREELEY AREA, Weld, CO | Pass | State |
| 2023-10-03 | PDC ENERGY - WIEDEMAN/BOOMERANG PAD — high-priority violation on file | GREELEY AREA, Weld, CO | N/A | State |
| 2023-10-03 | ALGONQUIN GAS TRANSMISSION, LLC - CHAPLIN COMPRESSOR STATION | CHAPLIN, Windham, CT | Pass | State |
| 2023-10-03 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2023-10-03 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2023-10-03 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2023-10-03 | ORLANDO UTILITIES COMMISSION (OUC) | TITUSVILLE, Brevard, FL | Pass | State |
| 2023-10-03 | ORLANDO UTILITIES COMMISSION (OUC) | TITUSVILLE, Brevard, FL | Pass | State |
| 2023-10-03 | ORLANDO UTILITIES COMMISSION (OUC) | TITUSVILLE, Brevard, FL | Pass | State |
| 2023-10-03 | ORLANDO UTILITIES COMMISSION (OUC) | TITUSVILLE, Brevard, FL | Pass | State |
| 2023-10-03 | ORLANDO UTILITIES COMMISSION (OUC) | TITUSVILLE, Brevard, FL | Pass | State |
| 2023-10-03 | ORLANDO UTILITIES COMMISSION (OUC) | TITUSVILLE, Brevard, FL | Pass | State |
| 2023-10-03 | ORLANDO UTILITIES COMMISSION (OUC) | TITUSVILLE, Brevard, FL | Pass | State |
| 2023-10-03 | ORLANDO UTILITIES COMMISSION (OUC) | TITUSVILLE, Brevard, FL | Pass | State |
| 2023-10-03 | ORLANDO UTILITIES COMMISSION (OUC) | TITUSVILLE, Brevard, FL | Pass | State |
| 2023-10-03 | ORLANDO UTILITIES COMMISSION (OUC) | TITUSVILLE, Brevard, FL | Pass | State |
| 2023-10-03 | DUKE ENERGY FLORIDA, LLC | INTERCESSION CITY, Osceola, FL | Pass | State |
| 2023-10-03 | DUKE ENERGY FLORIDA, LLC | INTERCESSION CITY, Osceola, FL | Pass | State |
| 2023-10-03 | PRODUCTS (SE) PIPE LINE CORP - BREMEN TANK FARM | BREMEN, Haralson, GA | Pass | State |
| 2023-10-03 | PRODUCTS (SE) PIPE LINE CORP - BREMEN TANK FARM | BREMEN, Haralson, GA | Pass | State |
| 2023-10-03 | LANIER PALLET RECYCLING, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2023-10-03 | C.W. MATTHEWS CONTRACTING CO., INC. PLANT #CWM62 | DALLAS, Paulding, GA | Pass | State |
| 2023-10-03 | MID AMERICAN ENERGY CO-COUNCIL BLUFFS | COUNCIL BLUFFS, Pottawattamie, IA | Pass | State |
| 2023-10-03 | ITAFOS CONDA LLC - TV FACILITY | SODA SPRINGS, Caribou, ID | Pass | State |
| 2023-10-03 | KEYSTONE AUTOMOTIVE INDUSTRIES DBA TRANSWHEEL — high-priority violation on file | HUNTINGTON, Huntington, IN | Pass | State |
| 2023-10-03 | KEYSTONE AUTOMOTIVE INDUSTRIES DBA TRANSWHEEL — high-priority violation on file | HUNTINGTON, Huntington, IN | Pass | State |
| 2023-10-03 | KEYSTONE AUTOMOTIVE INDUSTRIES DBA TRANSWHEEL — high-priority violation on file | HUNTINGTON, Huntington, IN | Pass | State |
| 2023-10-03 | KEYSTONE AUTOMOTIVE INDUSTRIES DBA TRANSWHEEL — high-priority violation on file | HUNTINGTON, Huntington, IN | Pass | State |
| 2023-10-03 | E & B PAVING LLC | CHANDLER, Warrick, IN | Pass | State |
| 2023-10-03 | E & B PAVING LLC | CHANDLER, Warrick, IN | Pass | State |
| 2023-10-03 | E & B PAVING LLC | CHANDLER, Warrick, IN | Pass | State |
| 2023-10-03 | E & B PAVING LLC | CHANDLER, Warrick, IN | Pass | State |
| 2023-10-03 | EAST KY POWER COOP - COOPER STATION | SOMERSET, Pulaski, KY | Pass | State |
| 2023-10-03 | PORTLAND WATER DISTRICT | STANDISH, Cumberland, ME | Pass | State |
| 2023-10-03 | FORD MOTOR COMPANY ROUGE COMPLEX | DEARBORN, Wayne, MI | Pending | State |
| 2023-10-03 | FCA US LLC STERLING HEIGHTS ASSEMBLY PLANT | STERLING HEIGHTS, Macomb, MI | Pending | State |
| 2023-10-03 | TES FILER CITY STATION | FILER CITY, Manistee, MI | Pending | State |
| 2023-10-03 | ADA COGENERATION LLC | ADA, Kent, MI | Pass | State |
| 2023-10-03 | MCNAMARA CONTRACTING INC | ROSEMOUNT, Dakota, MN | Pass | State |
| 2023-10-03 | KODA ENERGY, LLC — high-priority violation on file | SHAKOPEE, Scott, MN | Pass | State |
| 2023-10-03 | MISSISSIPPI POWER COMPANY, CHEVRON COGENERATING PLANT | PASCAGOULA, Jackson, MS | Pass | State |
| 2023-10-03 | MISSISSIPPI POWER COMPANY, DAVID M RATCLIFFE | DEKALB, Kemper, MS | Pass | State |
| 2023-10-03 | MISSISSIPPI POWER COMPANY, DAVID M RATCLIFFE | DEKALB, Kemper, MS | Pass | State |
| 2023-10-03 | SHUQUALAK LUMBER COMPANY INC, PLANER MILL DIVISION — high-priority violation on file | SHUQUALAK, Noxubee, MS | Pass | State |
| 2023-10-03 | OWENS-BROCKWAY GLASS CONTAINER INC. | LEXINGTON, Davidson, NC | Pass | State |
| 2023-10-03 | LAMPE & MALPHRUS LUMBER COMPANY | SMITHFIELD, Johnston, NC | Pass | State |
| 2023-10-03 | CITY OF LAURINBURG - YARD WASTE BURN SITE | LAURINBURG, Scotland, NC | Pending | State |
| 2023-10-03 | BRIDGEPORT ETHANOL LLC | BRIDGEPORT, Morrill, NE | N/A | State |
| 2023-10-03 | MID AMERICA AGRI PRODUCTS | MADRID, Perkins, NE | N/A | State |
| 2023-10-03 | SAND DUNES NORTH CORRIDOR WEST COMPRESSION STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-03 | SAND DUNES NORTH CORRIDOR WEST COMPRESSION STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-03 | STRAWBERRY FIELDS BOOSTER STATION | LOCO HILLS, Eddy, NM | Pass | State |
| 2023-10-03 | CARDINAL POWER PLANT (CARDINAL OPERATING COMPANY) | BRILLIANT, Jefferson, OH | Pass | State |
| 2023-10-03 | COTERRA ENERGY OPERATING CO / MARY 1H 2326X TED 1H 2314X | OKARCHE, Canadian, OK | Pass | State |
| 2023-10-03 | TARGA PIPELINE MIDCONTINENT LLC / TIVIS COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pass | State |
| 2023-10-03 | CONTINENTAL RESOURCES / HONEYCUTT 12 15 22XHS VANARKEL 9 15 10 | ELMORE CITY, Stephens, OK | Pass | State |
| 2023-10-03 | ET GATHERING PROCESSING LLC / ROSE VALLEY PLANT | ALVA, Woods, OK | Pass | State |
| 2023-10-03 | EASTERN GAS TRANS & STORAGE/CRAYNE STA | WAYNESBURG, Greene, PA | Pass | State |
| 2023-10-03 | CABOT OIL & GAS CORP/BISHOP, B PAD 1 | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2023-10-03 | CABOT OIL & GAS CORP/MAKOSKY T PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2023-10-03 | NUCOR CORPORATION - DARLINGTON PLANT | DARLINGTON, Darlington, SC | Pass | State |
| 2023-10-03 | FORT PIERRE POWER AND LIGHT PLANT — high-priority violation on file | FORT PIERRE, Stanley, SD | Pass | State |
| 2023-10-03 | TENNESSEE OPERATIONS OF EASTMAN CHEMICAL COMPANY — high-priority violation on file | KINGSPORT, Sullivan, TN | Pass | State |
| 2023-10-03 | QUAD/GRAPHICS INC - HARTFORD | HARTFORD, Dodge, WI | Pass | State |
| 2023-10-03 | KOHLER CO - METALS PROCESSING COMPLEX | KOHLER, Taylor, WI | Pass | State |
| 2023-10-03 | KOHLER CO - METALS PROCESSING COMPLEX | KOHLER, Taylor, WI | Pass | State |
| 2023-10-03 | MONONGAHELA POWER COMPANY, HARRISON STATION | HAYWOOD, Harrison, WV | Pass | State |
| 2023-10-03 | WILLIAMS OHIO VALLEY MIDSTREAM LLC, OAK GROVE | MOUNDSVILLE, Marshall, WV | Pass | State |
| 2023-10-03 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-10-03 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-10-03 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-10-03 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-10-03 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-10-03 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-10-03 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-10-03 | WESTVACO FACILITY (WE SODA WYOMING LP) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-10-02 | CHEVRON U.S.A. INC. | SAN ARDO, Monterey, CA | Pass | Local |
| 2023-10-02 | CHEVRON U.S.A. INC. | SAN ARDO, Monterey, CA | Pass | Local |
| 2023-10-02 | CHEVRON U.S.A. INC. | SAN ARDO, Monterey, CA | Pass | Local |
| 2023-10-02 | CHEVRON U.S.A. INC. | SAN ARDO, Monterey, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.