EPA Air · stack tests by year
Air-emissions stack tests in 2024
- 39,252Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2024
- California 18,905
- Ohio 2,721
- Oklahoma 1,804
- Indiana 1,704
- New Mexico 1,428
- Florida 1,427
- Wyoming 1,285
- Georgia 1,104
- Pennsylvania 905
- Alabama 721
- Arkansas 569
- Missouri 539
- Iowa 464
- Mississippi 437
- Colorado 400
- Washington 338
- Texas 271
- Wisconsin 269
- North Carolina 254
- Minnesota 250
- West Virginia 230
- South Carolina 223
- Kentucky 218
- Delaware 185
- Montana 180
- Michigan 159
- Virginia 159
- Alaska 158
- Utah 157
- Tennessee 155
- Nebraska 150
- North Dakota 138
- Arizona 126
- Connecticut 122
- New York 115
- Maine 114
- Louisiana 113
- Illinois 109
- Idaho 91
- Nevada 88
- Hawaii 67
- Kansas 64
- New Hampshire 61
- South Dakota 59
- Maryland 58
- Massachusetts 52
- Oregon 35
- Rhode Island 29
- District of Columbia 25
- New Jersey 8
- Puerto Rico 5
- Vermont 4
Other years
Air-emissions stack tests recorded in 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-11-14 | CALGON CARBON CORP. | COLUMBUS, Franklin, OH | Pass | State |
| 2024-11-14 | CALGON CARBON CORP. | COLUMBUS, Franklin, OH | Pass | State |
| 2024-11-14 | CALGON CARBON CORP. | COLUMBUS, Franklin, OH | Pass | State |
| 2024-11-14 | CALGON CARBON CORP. | COLUMBUS, Franklin, OH | Pass | State |
| 2024-11-14 | UNITED ROLLS INC. | CANTON, Stark, OH | Pass | State |
| 2024-11-14 | UNITED ROLLS INC. | CANTON, Stark, OH | Pass | State |
| 2024-11-14 | UNITED ROLLS INC. | CANTON, Stark, OH | Pass | State |
| 2024-11-14 | UNITED ROLLS INC. | CANTON, Stark, OH | Pass | State |
| 2024-11-14 | UNITED ROLLS INC. | CANTON, Stark, OH | Pass | State |
| 2024-11-14 | UNITED ROLLS INC. | CANTON, Stark, OH | Pass | State |
| 2024-11-14 | UNITED ROLLS INC. | CANTON, Stark, OH | Pass | State |
| 2024-11-14 | UNITED ROLLS INC. | CANTON, Stark, OH | Pass | State |
| 2024-11-14 | UNITED ROLLS INC. | CANTON, Stark, OH | Pass | State |
| 2024-11-14 | UNITED ROLLS INC. | CANTON, Stark, OH | Pass | State |
| 2024-11-14 | TARGA PIPELINE MIDCONTINENT LLC / BRAWLEY COMPRESSOR STATION | LINDSAY, Garvin, OK | Pass | State |
| 2024-11-14 | TARGA PIPELINE MIDCONTINENT LLC / BRAWLEY COMPRESSOR STATION | LINDSAY, Garvin, OK | Pass | State |
| 2024-11-14 | FW MIDCON I LLC / JACKALOPE 0305 1 22 27 34SXH 2 22 27 3 | RUSH SPRINGS, Grady, OK | Pass | State |
| 2024-11-14 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2024-11-14 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2024-11-14 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2024-11-14 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2024-11-14 | PEOPLES ELECTRIC COOP / BUZZARD FLOP | GERTY, Hughes, OK | Pass | State |
| 2024-11-14 | ALTOONA TERM DE LLC/ALTOONA | DUNCANSVILLE, Blair, PA | Pass | State |
| 2024-11-14 | UGI AUBURN GATHERING LLC/ MANNING COMPRESSOR LNG STA | MESHOPPEN, Wyoming, PA | Pass | State |
| 2024-11-14 | COTERRA ENERGY INC/HAYNES W PAD 1 | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2024-11-14 | AUSTIN, E. PAD 1 | HOP BOTTOM, Susquehanna, PA | Pass | State |
| 2024-11-14 | US STEEL CORP/IRVIN PLT | WEST MIFFLIN, Allegheny, PA | Pass | Local |
| 2024-11-14 | ADVANSIX (FORMERLY HONEYWELL/FRANKFORD PLT) — high-priority violation on file | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2024-11-14 | TORAY COMPOSITE MATERIALS AMERICA INC | MOORE, Spartanburg, SC | Pass | State |
| 2024-11-14 | WHARF RESOURCES INC - COEUR WHARF | LEAD, Lawrence, SD | Pass | State |
| 2024-11-14 | BONNELL ALUMINUM, INC. | CARTHAGE, Smith, TN | Pass | State |
| 2024-11-14 | STEEL DYNAMICS SOUTHWEST | SINTON, San Patricio, TX | Pass | State |
| 2024-11-14 | STEEL DYNAMICS SOUTHWEST | SINTON, San Patricio, TX | Fail | State |
| 2024-11-14 | JMU - JAMES MADISON UNIVERSITY | HARRISONBURG, Harrisonburg (city), VA | Pass | State |
| 2024-11-14 | PUGET SOUND ENERGY - ENCOGEN | BELLINGHAM, Whatcom, WA | Pass | Local |
| 2024-11-14 | UNITED ETHANOL LLC | MILTON, Rusk, WI | Fail | State |
| 2024-11-14 | ERGON - WEST VIRGINIA, INC., NEWELL | NEWELL, Hancock, WV | Pass | State |
| 2024-11-14 | COLUMBIA GAS TRANSMISSION, LLC, LOST RIVER | MATHIAS, Hardy, WV | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-14 | CROSSBOW COMPRESSOR STATION (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-13 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2024-11-13 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2024-11-13 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2024-11-13 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2024-11-13 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2024-11-13 | ROBERT'S TRUST COMPRESSOR STATION | DUNN COUNTY, Dunn, ND | Pass | U.S. EPA |
| 2024-11-13 | JOHNSON COMPRESSOR STATION | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2024-11-13 | JOHNSON COMPRESSOR STATION | MANDAREE, McKenzie, ND | Pass | U.S. EPA |
| 2024-11-13 | AMRIZE CEMENT, INC. | THEODORE, Mobile, AL | Pass | State |
| 2024-11-13 | AMRIZE CEMENT, INC. | THEODORE, Mobile, AL | Pass | State |
| 2024-11-13 | AMRIZE CEMENT, INC. | THEODORE, Mobile, AL | Pass | State |
| 2024-11-13 | AMRIZE CEMENT, INC. | THEODORE, Mobile, AL | Pass | State |
| 2024-11-13 | AMRIZE CEMENT, INC. | THEODORE, Mobile, AL | Pass | State |
| 2024-11-13 | HUNT REFINING COMPANY | TUSCALOOSA, Tuscaloosa, AL | Pass | State |
| 2024-11-13 | ENABLE MISSISSIPPI RIVER TRANSMISSION, LLC - TUCKERMAN COMPRESSOR STATION | TUCKERMAN, Jackson, AR | Pass | State |
| 2024-11-13 | ASARCO - HAYDEN SMELTER — high-priority violation on file | HAYDEN, Gila, AZ | Pass | State |
| 2024-11-13 | NORTHWEST REGIONAL LANDFILL | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-11-13 | LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file | PARACHUTE 10.1 MI. W OF, Garfield, CO | Pass | State |
| 2024-11-13 | LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file | PARACHUTE 10.1 MI. W OF, Garfield, CO | Pass | State |
| 2024-11-13 | LARAMIE ENERGY - CONN CREEK GAS — high-priority violation on file | PARACHUTE 10.1 MI. W OF, Garfield, CO | Pass | State |
| 2024-11-13 | CHEVRON USA INC - PICEANCE BASIN CENTRAL | PARACHUTE 16.6 MI. NW OF, Garfield, CO | Pass | State |
| 2024-11-13 | PDC ENERGY - KODAK SOUTH 26 SEC | WINDSOR AREA, Weld, CO | Pass | State |
| 2024-11-13 | CHEMICAL EQUIPMENT LABS OF DE, INC. | NEW HAVEN, New Haven, CT | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.