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 |
|---|---|---|---|---|
| 2023-10-19 | BWXT NUCLEAR OPERATIONS GROUP INCORPORATED | MOUNT VERNON, Posey, IN | Pass | State |
| 2023-10-19 | BWXT NUCLEAR OPERATIONS GROUP INCORPORATED | MOUNT VERNON, Posey, IN | Pass | State |
| 2023-10-19 | ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file | NEWBURGH, Warrick, IN | Pass | State |
| 2023-10-19 | ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file | NEWBURGH, Warrick, IN | Pass | State |
| 2023-10-19 | MONTGOMERY COUNTY RRF — high-priority violation on file | DICKERSON, Montgomery, MD | Pass | State |
| 2023-10-19 | PIKE INDUSTRIES, INC. | PHILLIPS, Franklin, ME | Pass | State |
| 2023-10-19 | CLEAN MAINE CARBON, LLC | GREENVILLE, Piscataquis, ME | Pass | State |
| 2023-10-19 | AG PARTNERS COOPERATIVE, INC. | TARKIO, Atchison, MO | Fail | State |
| 2023-10-19 | AG PARTNERS COOPERATIVE, INC. | TARKIO, Atchison, MO | Fail | State |
| 2023-10-19 | AG PARTNERS COOPERATIVE, INC. | TARKIO, Atchison, MO | Fail | State |
| 2023-10-19 | AG PARTNERS COOPERATIVE, INC. | TARKIO, Atchison, MO | Fail | State |
| 2023-10-19 | BLUESCOPE COATED PRODUCTS LLC | JACKSON, Hinds, MS | Pass | State |
| 2023-10-19 | IKE WILLIAMSON SAND PIT, ACB | SHALLOTTE, Brunswick, NC | Pass | State |
| 2023-10-19 | REGULATOR MARINE, INC. | EDENTON, Chowan, NC | Pass | State |
| 2023-10-19 | STATE METAL INDUSTRIES | CAMDEN, Camden, NJ | Pass | State |
| 2023-10-19 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-19 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-19 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-19 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-19 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-19 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-19 | SECTION 9 COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-19 | SECTION 9 COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-19 | LOST TANK 13 BOO STATION | LOVING, Eddy, NM | Pass | State |
| 2023-10-19 | CDU BOOSTER STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-19 | CDU BOOSTER STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-10-19 | ASTORIA GENERATING STATION | ASTORIA, Queens, NY | Pass | State |
| 2023-10-19 | MATALCO USA LLC | LORDSTOWN, Trumbull, OH | Pass | State |
| 2023-10-19 | MATALCO USA LLC | LORDSTOWN, Trumbull, OH | Pass | State |
| 2023-10-19 | MATALCO USA LLC | LORDSTOWN, Trumbull, OH | Pass | State |
| 2023-10-19 | MATALCO USA LLC | LORDSTOWN, Trumbull, OH | Pass | State |
| 2023-10-19 | MATALCO USA LLC | LORDSTOWN, Trumbull, OH | Pass | State |
| 2023-10-19 | MATALCO USA LLC | LORDSTOWN, Trumbull, OH | Pass | State |
| 2023-10-19 | MATALCO USA LLC | LORDSTOWN, Trumbull, OH | Pass | State |
| 2023-10-19 | MATALCO USA LLC | LORDSTOWN, Trumbull, OH | Pass | State |
| 2023-10-19 | ASCENT RESOURCES - UTICA, LLC - KEMPER | BELLAIRE, Belmont, OH | Pass | State |
| 2023-10-19 | ASCENT RESOURCES - UTICA, LLC - KEMPER | BELLAIRE, Belmont, OH | Pass | State |
| 2023-10-19 | ASCENT RESOURCES - UTICA, LLC - KEMPER | BELLAIRE, Belmont, OH | Pass | State |
| 2023-10-19 | ASCENT RESOURCES - UTICA, LLC - WASSMANN | BELLAIRE, Belmont, OH | Pass | State |
| 2023-10-19 | ASCENT RESOURCES - UTICA, LLC - WASSMANN | BELLAIRE, Belmont, OH | Pass | State |
| 2023-10-19 | ASCENT RESOURCES - UTICA, LLC - WASSMANN | BELLAIRE, Belmont, OH | Pass | State |
| 2023-10-19 | EUREKA MIDSTREAM - CAIN RIDGE COMPRESSOR STATION | CLARINGTON, Monroe, OH | Pass | State |
| 2023-10-19 | EUREKA MIDSTREAM - CAIN RIDGE COMPRESSOR STATION | CLARINGTON, Monroe, OH | Pass | State |
| 2023-10-19 | EUREKA MIDSTREAM - CAIN RIDGE COMPRESSOR STATION | CLARINGTON, Monroe, OH | Pass | State |
| 2023-10-19 | EUREKA MIDSTREAM - CAIN RIDGE COMPRESSOR STATION | CLARINGTON, Monroe, OH | Pass | State |
| 2023-10-19 | EUREKA MIDSTREAM - CAIN RIDGE COMPRESSOR STATION | CLARINGTON, Monroe, OH | Pass | State |
| 2023-10-19 | EUREKA MIDSTREAM - CAIN RIDGE COMPRESSOR STATION | CLARINGTON, Monroe, OH | Pass | State |
| 2023-10-19 | ERAMET MARIETTA, INC. — high-priority violation on file | MARIETTA, Washington, OH | Pass | State |
| 2023-10-19 | ERAMET MARIETTA, INC. — high-priority violation on file | MARIETTA, Washington, OH | Pass | State |
| 2023-10-19 | MIAMI FORT POWER COMPANY LLC | NORTH BEND, Hamilton, OH | Pass | State |
| 2023-10-19 | VALIDUS ENERGY II MIDCON LLC / SEABISCUIT PAD | YUKON, Canadian, OK | Pass | State |
| 2023-10-19 | ET GATHERING PROCESSING LLC / NAPLES COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2023-10-19 | ET GATHERING PROCESSING LLC / NAPLES COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2023-10-19 | ET GATHERING PROCESSING LLC / NAPLES COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2023-10-19 | TOM STACK LLC / COOP COMPRESSOR FACILITY | OKARCHE, Kingfisher, OK | Pass | State |
| 2023-10-19 | MARKWEST OKLAHOMA GAS CO LLC / ALPHA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-10-19 | BCE MACH III LLC / BENDA 3 16 6 1 2 5 7HO PAD | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-10-19 | BCE MACH III LLC / BENDA 3 16 6 1 2 5 7HO PAD | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-10-19 | BCE MACH III LLC / THEMER 32 18 6 3HO 32 18 6 4HO PAD | DOVER, Kingfisher, OK | Pass | State |
| 2023-10-19 | BCE MACH III LLC / PAULINE 32 18 6 5HO 6HO PAD | DOVER, Kingfisher, OK | Pass | State |
| 2023-10-19 | CALYX ENERGY III LLC / EAGLE PAD | VERNON, Pittsburg, OK | Pass | State |
| 2023-10-19 | SNYDER BROS INC/COTTAGE HILL COMP STA | NEW BETHELHEM, Clarion, PA | Pass | State |
| 2023-10-19 | MARKWEST LIBERTY BLUESTONE LLC/SARSEN GAS PROC PLT | EVANS CITY, Butler, PA | Pass | State |
| 2023-10-19 | EXPAND OPERATING LLC/ROSIEMAR SUS PAD | MESHOPPEN, Susquehanna, PA | Pass | State |
| 2023-10-19 | EXPAND OPER LLC/TI-46-BLISS WELL PAD | LIBERTY, Tioga, PA | Pass | State |
| 2023-10-19 | ALLEGHENY CNTY SANI AUTH/ALLEGHENY CNTY | PITTSBURGH, Allegheny, PA | Fail | Local |
| 2023-10-19 | FIRST QUALITY TISSUE SE LLC | ANDERSON, Anderson, SC | Pass | State |
| 2023-10-19 | KING ASPHALT INC SIMPSONVILLE | SIMPSONVILLE, Greenville, SC | Pass | State |
| 2023-10-19 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-19 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-19 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-19 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-19 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-19 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-19 | EXXONMOBIL BEAUMONT REFINERY — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-19 | BEAUMONT GAS TO GASOLINE PLANT — high-priority violation on file | BEAUMONT, Jefferson, TX | Pass | State |
| 2023-10-19 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2023-10-19 | NORTHWEST PIPELINE GP SUMNER | SUMNER, Pierce, WA | Pass | Local |
| 2023-10-19 | NORTHWEST PIPELINE GP SUMNER | SUMNER, Pierce, WA | Pass | Local |
| 2023-10-18 | TAT-BLUE BUTTES COMPRESSOR STATION | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2023-10-18 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | BUTLER, Choctaw, AL | Pass | State |
| 2023-10-18 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | BUTLER, Choctaw, AL | Pass | State |
| 2023-10-18 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | BUTLER, Choctaw, AL | Pass | State |
| 2023-10-18 | CEMEX SOUTHEAST LLC | DEMOPOLIS, Marengo, AL | Pass | State |
| 2023-10-18 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Pass | State |
| 2023-10-18 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Pass | State |
| 2023-10-18 | VANTIVE US HEALTHCARE, LLC. | MOUNTAIN HOME, Baxter, AR | Pass | State |
| 2023-10-18 | EMERY SAPP & SONS, INC. - GRAVETTE ASPHALT PLANT | SULPHUR SPRINGS, Benton, AR | Pass | State |
| 2023-10-18 | DRAKE CEMENT- DRAKE ROAD SITE — high-priority violation on file | PAULDEN, Yavapai, AZ | Pass | State |
| 2023-10-18 | SO CAL GAS - BLYTHE | BLYTHE, Riverside, CA | Pass | Local |
| 2023-10-18 | SILGAN CONTAINERS | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2023-10-18 | HARBOR COGENERATION CO, LLC | WILMINGTON, Los Angeles, CA | Pass | Local |
| 2023-10-18 | UCSD | LA JOLLA, San Diego, CA | Pending | Local |
| 2023-10-18 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-18 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-18 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-18 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-18 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-18 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-18 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.