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 |
|---|---|---|---|---|
| 2024-11-04 | RAZORBACK GATHERING COMPANY, LLC. - HARMONY CPF 1 | SEARCY, White, AR | Pass | State |
| 2024-11-04 | RAZORBACK GATHERING COMPANY, LLC. - HARMONY CPF 1 | SEARCY, White, AR | Pass | State |
| 2024-11-04 | DCP OPERATING CO - LIBSACK C.S. | GREELEY AREA, Weld, CO | Pass | State |
| 2024-11-04 | DCP OPERATING CO - NORTHSTAR C.S. | EATON 3.4 MI. N OF, Weld, CO | Pass | State |
| 2024-11-04 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2024-11-04 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2024-11-04 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2024-11-04 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2024-11-04 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2024-11-04 | LINWOOD MINING & MINERALS CORP | DAVENPORT, Scott, IA | Pass | State |
| 2024-11-04 | GLOBE ASPHALT PAVING INC | WESTPORT, Decatur, IN | Pass | State |
| 2024-11-04 | GLOBE ASPHALT PAVING INC | WESTPORT, Decatur, IN | Pass | State |
| 2024-11-04 | GLOBE ASPHALT PAVING INC | WESTPORT, Decatur, IN | Pass | State |
| 2024-11-04 | GLOBE ASPHALT PAVING INC | WESTPORT, Decatur, IN | Pass | State |
| 2024-11-04 | LAUREL RIDGE LANDFILL | LILY, Laurel, KY | Pending | State |
| 2024-11-04 | IDEKER INC MOSBY NORTH QUARRY | MOSBY, Clay, MO | Pass | State |
| 2024-11-04 | IDEKER INC MOSBY NORTH QUARRY | MOSBY, Clay, MO | Pass | State |
| 2024-11-04 | IDEKER INC MOSBY NORTH QUARRY | MOSBY, Clay, MO | Pass | State |
| 2024-11-04 | IDEKER INC MOSBY NORTH QUARRY | MOSBY, Clay, MO | Pass | State |
| 2024-11-04 | IDEKER INC MOSBY NORTH QUARRY | MOSBY, Clay, MO | Pass | State |
| 2024-11-04 | IDEKER INC MOSBY NORTH QUARRY | MOSBY, Clay, MO | Pass | State |
| 2024-11-04 | IDEKER INC MOSBY NORTH QUARRY | MOSBY, Clay, MO | Pass | State |
| 2024-11-04 | IDEKER INC MOSBY NORTH QUARRY | MOSBY, Clay, MO | Pass | State |
| 2024-11-04 | IDEKER INC MOSBY NORTH QUARRY | MOSBY, Clay, MO | Pass | State |
| 2024-11-04 | IDEKER INC MOSBY NORTH QUARRY | MOSBY, Clay, MO | Pass | State |
| 2024-11-04 | TEXAS EASTERN TRANSMISSION LP, CLINTON COMPRESSOR STATION | JACKSON, Hinds, MS | Pass | State |
| 2024-11-04 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2024-11-04 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2024-11-04 | BILLINGS REFINERY | BILLINGS, Yellowstone, MT | Pass | State |
| 2024-11-04 | YELLOWSTONE COUNTY GENERATING STATION | LAUREL, Yellowstone, MT | Pass | State |
| 2024-11-04 | YELLOWSTONE COUNTY GENERATING STATION | LAUREL, Yellowstone, MT | Pass | State |
| 2024-11-04 | YELLOWSTONE COUNTY GENERATING STATION | LAUREL, Yellowstone, MT | Pass | State |
| 2024-11-04 | YELLOWSTONE COUNTY GENERATING STATION | LAUREL, Yellowstone, MT | Pass | State |
| 2024-11-04 | YELLOWSTONE COUNTY GENERATING STATION | LAUREL, Yellowstone, MT | Pass | State |
| 2024-11-04 | YELLOWSTONE COUNTY GENERATING STATION | LAUREL, Yellowstone, MT | Pass | State |
| 2024-11-04 | PPG INDUSTRIES, INC. | GREENSBORO, Guilford, NC | Pass | State |
| 2024-11-04 | ASH GROVE CEMENT CO — high-priority violation on file | LOUISVILLE, Cass, NE | Pass | State |
| 2024-11-04 | ASH GROVE CEMENT CO — high-priority violation on file | LOUISVILLE, Cass, NE | Pass | State |
| 2024-11-04 | SEAWOLF COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-11-04 | PICANTE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-11-04 | PICANTE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-11-04 | CRONUS COMPRESSOR STATION | MALAGA, Lea, NM | Pass | State |
| 2024-11-04 | CRONUS COMPRESSOR STATION | MALAGA, Lea, NM | Pass | State |
| 2024-11-04 | PEOPLES ELECTRIC COOP / CENTRAHOMA — high-priority violation on file | CENTRAHOMA, Coal, OK | Pass | State |
| 2024-11-04 | PEOPLES ELECTRIC COOP / TARGA — high-priority violation on file | CENTRAHOMA, Coal, OK | Pass | State |
| 2024-11-04 | ET GATHERING PROCESSING LLC / KATIE COMPRESSOR STATION | ELMORE CITY, Garvin, OK | Pass | State |
| 2024-11-04 | EQT MIDSTREAM COMPANY LLC/DEEMSTON WICKS COMP STA | FREDERICKTOWN, Washington, PA | Pass | State |
| 2024-11-04 | CABOT OIL & GAS CORP/KROPA, T. PAD 1 | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2024-11-04 | PA GEN ENERGY CO LLC/COP TRACT 596 PAD B | ROARING BRANCH, Tioga, PA | Pass | State |
| 2024-11-04 | COTERRA ENERGY INC/ADAMS J PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2024-11-04 | DB ASPHALT & RECYCLING, LLC | BAYAMON, Bayamon, PR | Fail | U.S. EPA |
| 2024-11-04 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2024-11-04 | CHEVRON PHILLIPS CHEMICAL PORT ARTHUR FACILITY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2024-11-04 | COTTONWOOD ENERGY PROJECT | DEWEYVILLE, Newton, TX | Pass | State |
| 2024-11-04 | COTTONWOOD ENERGY PROJECT | DEWEYVILLE, Newton, TX | Pass | State |
| 2024-11-04 | COTTONWOOD ENERGY PROJECT | DEWEYVILLE, Newton, TX | Pass | State |
| 2024-11-04 | COTTONWOOD ENERGY PROJECT | DEWEYVILLE, Newton, TX | Pass | State |
| 2024-11-04 | DOW CHEMICAL SABINE RIVER OPERATIONS — high-priority violation on file | ORANGE, Orange, TX | Pass | State |
| 2024-11-04 | INV NYLON CHEMICALS AMERICAS ORANGE SITE — high-priority violation on file | ORANGE, Orange, TX | Pass | State |
| 2024-11-04 | INV NYLON CHEMICALS AMERICAS ORANGE SITE — high-priority violation on file | ORANGE, Orange, TX | Pass | State |
| 2024-11-04 | PUGET SOUND ENERGY-FREDONIA | MOUNT VERNON, Skagit, WA | Pass | Local |
| 2024-11-04 | PUGET SOUND ENERGY (WA NATURAL GAS) | CHEHALIS, Lewis, WA | Pass | Local |
| 2024-11-04 | WI PUBLIC SERVICE CORP - JP PULLIAM PLANT | GREEN BAY, Brown, WI | Pass | State |
| 2024-11-04 | WISCONSIN ELECTRIC POWER COMPANY D/B/A WE ENERGIES-GERMANTOWN STATION | GERMANTOWN, Waukesha, WI | Pass | State |
| 2024-11-04 | AMERICAN BITUMINOUS POWER PARTNERS, L. P., GRANT | GRANT TOWN, Marion, WV | Pass | State |
| 2024-11-04 | MOUNTAIN STATE CLEAN ENERGY, LLC, MAIDSVILLE | MAIDSVILLE, Monongalia, WV | Pass | State |
| 2024-11-04 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-04 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-04 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-04 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-03 | SAMPLE & SON CONSTRUCTION AND DEMOLITION LANDFILL — high-priority violation on file | GROVETOWN, Columbia, GA | Pass | State |
| 2024-11-02 | INTERNATIONAL PAPER COMPANY | PRATTVILLE, Autauga, AL | Pass | State |
| 2024-11-01 | OPTA INCORPORATED | EAST CHICAGO, Lake, IN | Pass | State |
| 2024-11-01 | OPTA INCORPORATED | EAST CHICAGO, Lake, IN | Pass | State |
| 2024-11-01 | WILLOW LAKE GAS PROCESSING PLANT | MALAGA, Eddy, NM | Pass | State |
| 2024-11-01 | WILLOW LAKE GAS PROCESSING PLANT | MALAGA, Eddy, NM | Pass | State |
| 2024-11-01 | TATER TOT 2 CTB 5 | MALAGA, Eddy, NM | Pass | State |
| 2024-11-01 | EUNICE GAS PROCESSING PLANT — high-priority violation on file | EUNICE, Lea, NM | Pass | State |
| 2024-11-01 | EUNICE GAS PROCESSING PLANT — high-priority violation on file | EUNICE, Lea, NM | Pass | State |
| 2024-11-01 | EUNICE GAS PROCESSING PLANT — high-priority violation on file | EUNICE, Lea, NM | Pass | State |
| 2024-11-01 | PEOPLES ELECTRIC COOP / CENTRAHOMA — high-priority violation on file | CENTRAHOMA, Coal, OK | Pass | State |
| 2024-11-01 | PEOPLES ELECTRIC COOP / CENTRAHOMA — high-priority violation on file | CENTRAHOMA, Coal, OK | Pass | State |
| 2024-11-01 | EOG RESOURCES INC / DOROTHY COMPRESSOR STATION | BLANCHARD, McClain, OK | Pass | State |
| 2024-11-01 | RESONAC GRAPHITE AMERICA INC — high-priority violation on file | RIDGEVILLE, Dorchester, SC | Pass | State |
| 2024-11-01 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-01 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-11-01 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-10-31 | ALABAMA POWER COMPANY (MILLER POWER PLANT) | QUINTON, Jefferson, AL | Pass | Local |
| 2024-10-31 | LEHIGH CEMENT COMPANY | LEEDS, Jefferson, AL | Pass | Local |
| 2024-10-31 | FREEPORT-MCMORAN - SAFFORD OPERATIONS | SAFFORD, Graham, AZ | Pass | State |
| 2024-10-31 | UCD MEDICAL CENTER | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2024-10-31 | HP HOOD, LLC — high-priority violation on file | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2024-10-31 | PHILLIPS 66 COMPANY | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2024-10-31 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-31 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-31 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-31 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-31 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-31 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-10-31 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.