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 |
|---|---|---|---|---|
| 2023-09-22 | PDC ENERGY - KIEHN & WEIS | JOHNSTOWN AREA, Weld, CO | Pass | State |
| 2023-09-22 | PDC ENERGY INC - CALIFORNIA 14 SEC HZ | EATON AREA, Weld, CO | Pass | State |
| 2023-09-22 | CITGO PETROLEUM CORP | FORT LAUDERDALE, Broward, FL | Pass | State |
| 2023-09-22 | NOVELIS, INC. | GREENSBORO, Greene, GA | N/A | State |
| 2023-09-22 | NOVELIS, INC. | GREENSBORO, Greene, GA | Pass | State |
| 2023-09-22 | NOVELIS, INC. | GREENSBORO, Greene, GA | Pass | State |
| 2023-09-22 | LAKE ZURICH VILLAGE OF | LAKE ZURICH, Lake, IL | Pass | State |
| 2023-09-22 | LAKE ZURICH VILLAGE OF | LAKE ZURICH, Lake, IL | Pass | State |
| 2023-09-22 | METAL TECHNOLOGIES AUBURN LLC — high-priority violation on file | AUBURN, DeKalb, IN | Pass | State |
| 2023-09-22 | CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file | EAST CHICAGO, Lake, IN | Pass | State |
| 2023-09-22 | CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file | EAST CHICAGO, Lake, IN | Pass | State |
| 2023-09-22 | RIVER CEMENT CO. DBA BUZZI UNICEM USA SELMA PLANT | FESTUS, Jefferson, MO | Pass | State |
| 2023-09-22 | RIVER CEMENT CO. DBA BUZZI UNICEM USA SELMA PLANT | FESTUS, Jefferson, MO | Pass | State |
| 2023-09-22 | CANFOR SOUTHERN PINE - GRAHAM PLANT — high-priority violation on file | GRAHAM, Alamance, NC | Pass | State |
| 2023-09-22 | TARGA BADLANDS, LLC - HAWKEYE COMPRESSOR STATION - AQ | KEENE, McKenzie, ND | Pass | State |
| 2023-09-22 | WHOLESTONE FARMS COOPERATIVE — high-priority violation on file | FREMONT, Dodge, NE | Fail | State |
| 2023-09-22 | DIMENSIONS 6 GAS LIFT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-22 | DAWSON/SHAMROCK BATTERY | CARLSBAD, Eddy, NM | Pass | State |
| 2023-09-22 | TRACY GENERATING STATION | MCCARRAN, Storey, NV | Pass | State |
| 2023-09-22 | CLEVELAND-CLIFFS WARREN | WARREN, Trumbull, OH | Pass | State |
| 2023-09-22 | NEXPERA FORT HILL PLANT | NORTH BEND, Hamilton, OH | Pass | State |
| 2023-09-22 | ONEOK FIELD SERVICES CO LLC / WARD COMPRESSOR STATION NORTHERN ROWS | GEARY, Canadian, OK | Pass | State |
| 2023-09-22 | BCE MACH III LLC / GORRELL 18 18 6 1HO 2HO PAD | DOVER, Kingfisher, OK | Pass | State |
| 2023-09-22 | JOHNSON MATTHEY/WAYNE PLT | WAYNE, Chester, PA | Pass | State |
| 2023-09-22 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/GODWIN COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2023-09-22 | APPALACHIA MIDSTREAM SVC LLC/CHERRY COMP STA | DUSHORE, Sullivan, PA | Pass | State |
| 2023-09-22 | NFG MIDSTREAM COVINGTON LLC/CLARK COMP STA | MAINESBURG, Tioga, PA | Pass | State |
| 2023-09-22 | EXPAND OPERATING LLC/NICKOLYN WELL PAD | AUBURN, Susquehanna, PA | Pass | State |
| 2023-09-22 | USS/CLAIRTON WORKS — high-priority violation on file | CLAIRTON, Allegheny, PA | Fail | Local |
| 2023-09-22 | SYNTHOMER JEFFERSON HILLS LLC | WEST ELIZABETH, Allegheny, PA | Pass | Local |
| 2023-09-22 | ALLEGHENY ENERGY SUPPLY/SPRINGDALE | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2023-09-22 | ANTELOPE ELK ENERGY CENTER | ABERNATHY, Hale, TX | Fail | State |
| 2023-09-22 | ANTELOPE ELK ENERGY CENTER | ABERNATHY, Hale, TX | Fail | State |
| 2023-09-22 | ANTELOPE ELK ENERGY CENTER | ABERNATHY, Hale, TX | Fail | State |
| 2023-09-22 | ANTELOPE ELK ENERGY CENTER | ABERNATHY, Hale, TX | Pass | State |
| 2023-09-22 | ANTELOPE ELK ENERGY CENTER | ABERNATHY, Hale, TX | Fail | State |
| 2023-09-22 | NORTHWEST PIPELINE LLC- MOUNT VERNON | MOUNT VERNON, Skagit, WA | Pass | Local |
| 2023-09-22 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-09-22 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-09-22 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-09-22 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-09-21 | BLUECREST ALASKA OPERATING LLC / COSMOPOLITAN PROJECT | KENAI, Kenai Peninsula, AK | Pass | State |
| 2023-09-21 | BLUECREST ALASKA OPERATING LLC / COSMOPOLITAN PROJECT | KENAI, Kenai Peninsula, AK | Pass | State |
| 2023-09-21 | BLUECREST ALASKA OPERATING LLC / COSMOPOLITAN PROJECT | KENAI, Kenai Peninsula, AK | Pass | State |
| 2023-09-21 | SOUTHERN NATURAL GAS | ELMORE, Elmore, AL | Pass | State |
| 2023-09-21 | WESTROCK COMPANY, LLC | STEVENSON, Jackson, AL | Pass | State |
| 2023-09-21 | WESTROCK COMPANY, LLC | STEVENSON, Jackson, AL | Pass | State |
| 2023-09-21 | WESTROCK COMPANY, LLC | STEVENSON, Jackson, AL | Pass | State |
| 2023-09-21 | WESTROCK COMPANY, LLC | STEVENSON, Jackson, AL | Pass | State |
| 2023-09-21 | REDSTONE ARSENAL | REDSTONE ARSENAL, Madison, AL | Pass | State |
| 2023-09-21 | REDSTONE ARSENAL | REDSTONE ARSENAL, Madison, AL | Pass | State |
| 2023-09-21 | ARCOSA LW BR, LLC | LIVINGSTON, Sumter, AL | Pass | State |
| 2023-09-21 | INTERNATIONAL PAPER | PINE HILL, Wilcox, AL | Pass | State |
| 2023-09-21 | INTERNATIONAL PAPER | PINE HILL, Wilcox, AL | Pass | State |
| 2023-09-21 | NORTHWEST REGIONAL LANDFILL | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2023-09-21 | LONG BEACH SERRF PROJECT | LONG BEACH, Los Angeles, CA | Pass | Local |
| 2023-09-21 | SNOW SUMMIT LLC | BIG BEAR LAKE, San Bernardino, CA | Pass | Local |
| 2023-09-21 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-21 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-21 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-21 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-21 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Fail | Local |
| 2023-09-21 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Fail | Local |
| 2023-09-21 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Fail | Local |
| 2023-09-21 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Fail | Local |
| 2023-09-21 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Fail | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2023-09-21 | HIGHWAY 59 LANDFILL — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.