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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register and their stack tests in 2023. It lists 26,911 stack tests recorded nationwide in 2023.