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 |
|---|---|---|---|---|
| 2023-10-12 | VIRIDIS CHEMICAL | COLUMBUS, Platte, NE | N/A | State |
| 2023-10-12 | MOCKINGBIRD CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2023-10-12 | GOLD QUARRY OPERATIONS — high-priority violation on file | CARLIN, Eureka, NV | Pass | State |
| 2023-10-12 | GUTCHESS LUMBER COMPANY INC. | CORTLAND, Cortland, NY | Pass | State |
| 2023-10-12 | LIBERTY CASTING INC. — high-priority violation on file | DELAWARE, Delaware, OH | Pass | State |
| 2023-10-12 | LIBERTY CASTING INC. — high-priority violation on file | DELAWARE, Delaware, OH | Pass | State |
| 2023-10-12 | LIBERTY CASTING INC. — high-priority violation on file | DELAWARE, Delaware, OH | Pass | State |
| 2023-10-12 | LIBERTY CASTING INC. — high-priority violation on file | DELAWARE, Delaware, OH | Pass | State |
| 2023-10-12 | PRO-TEC COATING COMPANY | LEIPSIC, Putnam, OH | Pass | State |
| 2023-10-12 | PRO-TEC COATING COMPANY | LEIPSIC, Putnam, OH | Pass | State |
| 2023-10-12 | ASCENT RESOURCES - DOMINO CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2023-10-12 | ASCENT RESOURCES - DOMINO CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2023-10-12 | ASCENT RESOURCES - DOMINO CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2023-10-12 | BCE MACH LLC / SCHOELING 5 26 12 1H AND MURROW 8 26 1 | CHEROKEE, Alfalfa, OK | Pass | State |
| 2023-10-12 | BCE MACH LLC / HOLLYWOOD 23 24 12 1H STA | CARMEN, Alfalfa, OK | Pass | State |
| 2023-10-12 | BCE MACH LLC / SUSAN KAY 6 27 12 PAD | BURLINGTON, Alfalfa, OK | Pass | State |
| 2023-10-12 | COTERRA ENERGY OPERATING CO / MAJORS 1 1H | HINTON, Canadian, OK | Pass | State |
| 2023-10-12 | MARKWEST OKLAHOMA GAS CO LLC / SPRAGUE COMPRESSOR STATION | COALGATE, Coal, OK | Pass | State |
| 2023-10-12 | MARKWEST OKLAHOMA GAS CO LLC / DUNN COMPRESSOR STATION | STUART, Hughes, OK | Pass | State |
| 2023-10-12 | DCP OPERATING CO LP / CROSSROADS COMPRESSOR STATION | MARLOW, Stephens, OK | Pass | State |
| 2023-10-12 | SAINT FRANCIS HEALTH SYSTEM / 6161 S YALE ST FRANCIS HOSPITAL MAIN | TULSA, Tulsa, OK | Pass | State |
| 2023-10-12 | HARRISON GYPSUM LLC DBA ARCOSA SPECIALT / MOORELAND | MOORELAND, Woodward, OK | Pass | State |
| 2023-10-12 | REGENCY MARCELLUS GAS GATHERING LLC/OGONTZ WEST COMP STA | CUMMINS TWP, Lycoming, PA | Pass | State |
| 2023-10-12 | ROCKWOOD MFG CO INC/NORTH SOMERSET | SOMERSET, Somerset, PA | Pass | State |
| 2023-10-12 | PPG IND INC/SPRINGDALE | SPRINGDALE, Allegheny, PA | Pass | Local |
| 2023-10-12 | PPG IND INC/SPRINGDALE | SPRINGDALE, Allegheny, PA | Pass | Local |
| 2023-10-12 | MINASOLVE, LLC | MEMPHIS, Shelby, TN | Pass | Local |
| 2023-10-12 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2023-10-12 | THE GOODYEAR TIRE & RUBBER COMPANY DANVILLE | DANVILLE, Danville (city), VA | Pass | State |
| 2023-10-12 | LANXESS CORPORATION — high-priority violation on file | KALAMA, Cowlitz, WA | Pass | Local |
| 2023-10-12 | BLUE RACER MIDSTREAM, LLC, NATRIUM EXTRACTION & FRACTIONA | NATRIUM, Marshall, WV | Pass | State |
| 2023-10-12 | ANTERO MIDSTREAM LLC, MIDDLEBOURNE V | MIDDLEBOURNE, Tyler, WV | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2023-10-12 | CKN-ROCK SPRINGS STATION (MOUNTAIN WEST PIPELINE, LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-10-12 | CKN-ROCK SPRINGS STATION (MOUNTAIN WEST PIPELINE, LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-10-11 | BONANZA POWER PLANT | BONANZA, Uintah, UT | Pass | U.S. EPA |
| 2023-10-11 | DOYON UTILITIES, LLC / FORT WAINWRIGHT (PRIVATIZED EMISSION UN | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2023-10-11 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2023-10-11 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2023-10-11 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2023-10-11 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2023-10-11 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2023-10-11 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2023-10-11 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2023-10-11 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2023-10-11 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2023-10-11 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2023-10-11 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2023-10-11 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2023-10-11 | HILCORP ENERGY COMPANY | CREOLA, Mobile, AL | Pass | State |
| 2023-10-11 | HILCORP ENERGY COMPANY | CREOLA, Mobile, AL | Pass | State |
| 2023-10-11 | GP CELLULOSE ALABAMA RIVER CELLULOSE LLC | PERDUE HILL, Monroe, AL | Pass | State |
| 2023-10-11 | BASF CORPORATION | HUNTSVILLE, Madison, AL | Pass | Local |
| 2023-10-11 | NUCOR COATINGS CORPORATION - BLYTHEVILLE PLANT | BLYTHEVILLE, Mississippi, AR | Pass | State |
| 2023-10-11 | NUCOR COATINGS CORPORATION - BLYTHEVILLE PLANT | BLYTHEVILLE, Mississippi, AR | Pass | State |
| 2023-10-11 | MMGK ARKOMA, LLC. - MASSARD #1 & #2 | FORT SMITH, Sebastian, AR | Pass | State |
| 2023-10-11 | MMGK ARKOMA, LLC. - MASSARD #1 & #2 | FORT SMITH, Sebastian, AR | Pass | State |
| 2023-10-11 | DESOTO GATHERING COMPANY, LLC - YOGI CPF-1 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2023-10-11 | NORTHRUP GRUMMAN SYSTEMS | MANHATTAN BEACH, Los Angeles, CA | Pass | Local |
| 2023-10-11 | SAN DIEGO GAS & ELECTRIC | MORENO VALLEY, Riverside, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-11 | E&B NATIONAL RESOURCES MANAGEMENT | BAKERSFIELD, Kern, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.