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 |
|---|---|---|---|---|
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Fail | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Fail | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Fail | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Fail | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | CLARIOS, LLC. | HOLLAND, Lucas, OH | Pass | State |
| 2023-10-17 | ASCENT RESOURCES - DOMINO CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2023-10-17 | ASCENT RESOURCES - DOMINO CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2023-10-17 | ASCENT RESOURCES - DOMINO CDZ HR | CADIZ, Harrison, OH | Pass | State |
| 2023-10-17 | THE MEDICAL CENTER COMPANY | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2023-10-17 | THE MEDICAL CENTER COMPANY | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2023-10-17 | THE MEDICAL CENTER COMPANY | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2023-10-17 | BCE MACH LLC / PATTI 16 26 11 STA | CHEROKEE, Alfalfa, OK | Pass | State |
| 2023-10-17 | BCE MACH LLC / MCMURTREY 8 26 11 2H PAD | CHEROKEE, Alfalfa, OK | Pass | State |
| 2023-10-17 | MARKWEST OKLAHOMA GAS CO LLC / OKARCHE COMPRESSOR STATION | OKARCHE, Canadian, OK | Pass | State |
| 2023-10-17 | TOM STACK LLC / ROGUE COMPRESSOR STATION | CONCHO, Canadian, OK | Pass | State |
| 2023-10-17 | ONEOK FIELD SERVICES CO LLC / DAKOTA COMPRESSOR STATION | GEARY, Canadian, OK | Pass | State |
| 2023-10-17 | ONEOK FIELD SERVICES CO LLC / DAKOTA COMPRESSOR STATION | GEARY, Canadian, OK | Pass | State |
| 2023-10-17 | ET GATHERING PROCESSING LLC / ASHLAND 2 COMPRESSOR STATION | CAIRO, Coal, OK | Pass | State |
| 2023-10-17 | ET GATHERING PROCESSING LLC / ASHLAND 2 COMPRESSOR STATION | CAIRO, Coal, OK | Pass | State |
| 2023-10-17 | HARRISON GYPSUM LLC DBA ARCOSA SPECIALT / MOORELAND | MOORELAND, Woodward, OK | Pass | State |
| 2023-10-17 | QNITY ELECTRONICS INC/TOWANDA PLT | TOWANDA, Bradford, PA | Pass | State |
| 2023-10-17 | THE SHERWIN WILLIAMS CO/ROCHESTER PLT — high-priority violation on file | ROCHESTER, Beaver, PA | Fail | State |
| 2023-10-17 | GREENTREE BOOSTER COMPRESSOR/ BROCKWAY | BROCKWAY, Elk, PA | Pass | State |
| 2023-10-17 | MARKWEST LIBERTY MIDSTREAM RES/DOWN HOME COMPRESSOR STATION | ROBINSON TWP, Washington, PA | Pass | State |
| 2023-10-17 | WCAA MIDSTREAM LLC/WEITZ SOUTH 20 COMP STA | ADAMSBURG, Westmoreland, PA | Pass | State |
| 2023-10-17 | QUIKRETE CONSTRUCTION MATERIALS, LLC — high-priority violation on file | HARLEYVILLE, Dorchester, SC | Pass | State |
| 2023-10-17 | RESONAC GRAPHITE AMERICA INC — high-priority violation on file | RIDGEVILLE, Dorchester, SC | Pass | State |
| 2023-10-17 | SATTERFIELD CONSTRUCTION COMPANY | NEWBERRY, Newberry, SC | Pass | State |
| 2023-10-17 | GCC DACOTAH — high-priority violation on file | RAPID CITY, Pennington, SD | Pass | State |
| 2023-10-17 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2023-10-17 | NORTHWEST PIPELINE LLC SNOHOMISH | SNOHOMISH, Snohomish, WA | Pass | Local |
| 2023-10-17 | DIDION MILLING INC. | CAMBRIA, Columbia, WI | Pass | State |
| 2023-10-17 | INDECK LADYSMITH LLC | LADYSMITH, Rusk, WI | Pass | State |
| 2023-10-17 | EASTERN GAS TRANSMISSION AND STORAGE, INC., CORNWELL STATION | CLENDENIN, Kanawha, WV | Pass | State |
| 2023-10-17 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-10-17 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-10-17 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-10-17 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-10-17 | DOTY MOUNTAIN COMPRESSOR STATION (US REALM VENTURES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-10-17 | DOTY MOUNTAIN COMPRESSOR STATION (US REALM VENTURES) | CARBON COUNTY, Carbon, WY | Pass | State |
| 2023-10-17 | COLONY EAST AND WEST PLANTS (AMERICAN COLLOID COMPANY) | COLONY, Crook, WY | Pass | State |
| 2023-10-17 | COLONY EAST AND WEST PLANTS (AMERICAN COLLOID COMPANY) | COLONY, Crook, WY | Pass | State |
| 2023-10-17 | COLONY EAST AND WEST PLANTS (AMERICAN COLLOID COMPANY) | COLONY, Crook, WY | Pass | State |
| 2023-10-17 | WAMSUTTER COMPRESSOR STATION (COLORADO INTERSTATE GAS) | WAMSUTTER, Sweetwater, WY | Pass | State |
| 2023-10-17 | WAMSUTTER COMPRESSOR STATION (COLORADO INTERSTATE GAS) | WAMSUTTER, Sweetwater, WY | Pass | State |
| 2023-10-16 | DOYON UTILITIES, LLC / FORT WAINWRIGHT (PRIVATIZED EMISSION UN | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2023-10-16 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC | BUTLER, Choctaw, AL | Pass | State |
| 2023-10-16 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC | BUTLER, Choctaw, AL | Pass | State |
| 2023-10-16 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC | BUTLER, Choctaw, AL | Pass | State |
| 2023-10-16 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC | BUTLER, Choctaw, AL | Pass | State |
| 2023-10-16 | VANTIVE US HEALTHCARE, LLC. | MOUNTAIN HOME, Baxter, AR | Pass | State |
| 2023-10-16 | SUZANO PACKAGING, LLC | PINE BLUFF, Jefferson, AR | Pass | State |
| 2023-10-16 | SDG&E (FRMLY PALOMAR ENERGY) | ESCONDIDO, San Diego, CA | Pass | Local |
| 2023-10-16 | LINN OPERATING INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-16 | LINN OPERATING INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-16 | LINN OPERATING INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-16 | LINN OPERATING INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-16 | LINN OPERATING INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-10-16 | FOSTER FOOD PRODUCTS — high-priority violation on file | LIVINGSTON, Merced, CA | Pass | Local |
| 2023-10-16 | FOSTER FOOD PRODUCTS — high-priority violation on file | LIVINGSTON, Merced, CA | Pass | Local |
| 2023-10-16 | FOSTER FOOD PRODUCTS — high-priority violation on file | LIVINGSTON, Merced, CA | Pass | Local |
| 2023-10-16 | FOSTER FOOD PRODUCTS — high-priority violation on file | LIVINGSTON, Merced, CA | Pass | Local |
| 2023-10-16 | PUBLIC SERVICE CO - RIFLE COMP STATION | RIFLE AREA, Garfield, CO | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.