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 |
|---|---|---|---|---|
| 2023-12-31 | FRAMATOME NP | RICHLAND, Benton, WA | Pass | Local |
| 2023-12-31 | FRAMATOME NP | RICHLAND, Benton, WA | Pass | Local |
| 2023-12-30 | BETA OFFSHORE | HUNTINGTON BEACH, Orange, CA | Pass | Local |
| 2023-12-29 | BETA OFFSHORE | HUNTINGTON BEACH, Orange, CA | Pass | Local |
| 2023-12-29 | BETA OFFSHORE | HUNTINGTON BEACH, Orange, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-29 | ASH GROVE CEMENT CO — high-priority violation on file | LOUISVILLE, Cass, NE | N/A | State |
| 2023-12-29 | ASH GROVE CEMENT CO — high-priority violation on file | LOUISVILLE, Cass, NE | N/A | State |
| 2023-12-29 | SUPERIOR MIDSTREAM LLC / BELMON GAS PLANT | TONKAWA, Kay, OK | Pass | State |
| 2023-12-29 | SUPERIOR MIDSTREAM LLC / BELMON GAS PLANT | TONKAWA, Kay, OK | Pass | State |
| 2023-12-29 | ET GATHERING PROCESSING LLC / POTEET COMPRESSOR STATION | BRAY, Stephens, OK | Pass | State |
| 2023-12-28 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2023-12-28 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2023-12-28 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2023-12-28 | FLORIDA GAS TRANSMISSION CO | MOUNT VERNON, Mobile, AL | Pass | State |
| 2023-12-28 | BETA OFFSHORE | HUNTINGTON BEACH, Orange, CA | Pass | Local |
| 2023-12-28 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-28 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-28 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-28 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-28 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-28 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-28 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-28 | GUARDIAN INDUSTRIES CORP | KINGSBURG, Fresno, CA | Pass | Local |
| 2023-12-28 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-12-28 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-12-28 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-12-28 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-12-28 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-12-28 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-12-28 | TEVA PHARMACEUTICALS | DAVIE, Broward, FL | Pass | State |
| 2023-12-28 | TEVA PHARMACEUTICALS | DAVIE, Broward, FL | Pass | State |
| 2023-12-28 | USA PARCEL #3 COMPRESSOR STATION | HAUGHTON, Bossier, LA | Pass | State |
| 2023-12-28 | AVALON COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2023-12-28 | EOG RESOURCES, INC. - MOUNTZ CL HAN PAD | HANOVERTON, Columbiana, OH | Pass | State |
| 2023-12-28 | EOG RESOURCES, INC. - MOUNTZ CL HAN PAD | HANOVERTON, Columbiana, OH | Pass | State |
| 2023-12-28 | EOG RESOURCES, INC. - MOUNTZ CL HAN PAD | HANOVERTON, Columbiana, OH | Pass | State |
| 2023-12-28 | NORTH TEXAS NATURAL SELECT MATERIALS LL / PORTABLE PLANT 1 | MUSKOGEE, Muskogee, OK | Pass | State |
| 2023-12-28 | ASSAI ENERGY LLC - KEYSTONE LANDFILL SITE | DUNMORE, Lackawanna, PA | Fail | State |
| 2023-12-28 | RHODE ISLAND LFG GENCO LLC — high-priority violation on file | JOHNSTON, TOWN OF, Providence, RI | Pass | State |
| 2023-12-28 | WOONSOCKET WASTEWATER TREATMENT FACILITY | WOONSOCKET, Providence, RI | Pass | State |
| 2023-12-28 | BASIN ELECTRIC POWER COOPERATIVE GROTON GENERATING | GROTON, Brown, SD | Pass | State |
| 2023-12-28 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2023-12-28 | PACKAGING CORPORATION OF AMERICA — high-priority violation on file | WALLULA, Walla Walla, WA | Pass | State |
| 2023-12-28 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-12-28 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-12-28 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-12-28 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-12-27 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2023-12-27 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2023-12-27 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2023-12-27 | LIGNETICS OF AR AND MO, LLC | MOUNTAIN VIEW, Stone, AR | Pass | State |
| 2023-12-27 | DESOTO GATHERING COMPANY, LLC - MIDGE CPF-1 | SEARCY, White, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | STAPP QUARRIES, LLC | OZARK, Franklin, AR | Pass | State |
| 2023-12-27 | AIR PRODUCTS MANUFACTURING, LLC — high-priority violation on file | PARAMOUNT, Los Angeles, CA | Pass | Local |
| 2023-12-27 | AIR PRODUCTS MANUFACTURING, LLC — high-priority violation on file | PARAMOUNT, Los Angeles, CA | Pass | Local |
| 2023-12-27 | NEXGEN PHARMA INC | IRVINE, Orange, CA | Pass | Local |
| 2023-12-27 | TEVA PHARMACEUTICALS | DAVIE, Broward, FL | Pass | State |
| 2023-12-27 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2023-12-27 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2023-12-27 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2023-12-27 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2023-12-27 | BLUE STEEL 21 FED CTB | LOVING, Eddy, NM | Pass | State |
| 2023-12-27 | FLORENCE STATE 23 FACILITY | JAL, Lea, NM | Pass | State |
| 2023-12-27 | DAGGER STATE SWD | MONUMENT, Lea, NM | Pass | State |
| 2023-12-27 | ASCENT RESOURCES - UTICA LLC - REITZ MED BL | JACOBSBURG, Belmont, OH | Pass | State |
| 2023-12-27 | ASCENT RESOURCES - UTICA LLC - REITZ MED BL | JACOBSBURG, Belmont, OH | Pass | State |
| 2023-12-27 | ASCENT RESOURCES - UTICA LLC - REITZ MED BL | JACOBSBURG, Belmont, OH | Pass | State |
| 2023-12-27 | ASCENT RESOURCES - UTICA LLC - OLIVER CLR BL | MARTINS FERRY, Belmont, OH | Pass | State |
| 2023-12-27 | ASCENT RESOURCES - UTICA LLC - OLIVER CLR BL | MARTINS FERRY, Belmont, OH | Pass | State |
| 2023-12-27 | ASCENT RESOURCES - UTICA LLC - OLIVER CLR BL | MARTINS FERRY, Belmont, OH | Pass | State |
| 2023-12-27 | BOUNTY TRANSFER LLC / KOVAR CCF COMPRESSOR STATION | MARLOW, Stephens, OK | Pass | State |
| 2023-12-27 | BOUNTY TRANSFER LLC / KOVAR CCF COMPRESSOR STATION | MARLOW, Stephens, OK | Pass | State |
| 2023-12-27 | PONTOTOC SAND AND STONE / PORTABLE PLANT 1 | PONTOTOC, Pontotoc, OK | Pass | State |
| 2023-12-27 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2023-12-27 | BARRON COUNTY WASTE TO ENERGY AND RECYCLING FACILITY — high-priority violation on file | ALMENA, Barron, WI | Pass | State |
| 2023-12-26 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | Pass | State |
| 2023-12-26 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2023-12-26 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.