EPA Air · stack tests by year
Air-emissions stack tests in 2021
- 35,950Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2021
- California 17,676
- Ohio 2,582
- Florida 1,540
- Indiana 1,495
- Oklahoma 1,318
- Georgia 1,189
- New Mexico 841
- Pennsylvania 788
- Alabama 621
- Mississippi 589
- Texas 574
- Arkansas 518
- Missouri 515
- Colorado 407
- Iowa 368
- Washington 334
- North Carolina 273
- Michigan 256
- Wisconsin 239
- Wyoming 235
- West Virginia 225
- Kentucky 222
- Delaware 222
- Montana 220
- South Carolina 217
- Minnesota 209
- Kansas 177
- Alaska 143
- Illinois 142
- Utah 140
- Nevada 136
- Virginia 131
- Nebraska 117
- Maine 110
- New Jersey 110
- New York 103
- Connecticut 99
- Tennessee 98
- North Dakota 93
- Arizona 93
- Idaho 90
- Louisiana 69
- Hawaii 64
- Maryland 56
- South Dakota 55
- District of Columbia 54
- New Hampshire 53
- Oregon 45
- Rhode Island 34
- Massachusetts 29
- Puerto Rico 19
- Vermont 17
Other years
Air-emissions stack tests recorded in 2021
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2021-10-21 | PALZIV NORTH AMERICA | LOUISBURG, Franklin, NC | Pass | State |
| 2021-10-21 | GASTON COUNTY LANDFILL - HARDIN SITE | DALLAS, Gaston, NC | Pass | State |
| 2021-10-21 | CONSOLIDATED PACKAGING GROUP INC — high-priority violation on file | RIDGEFIELD, Bergen, NJ | Fail | State |
| 2021-10-21 | CONSOLIDATED PACKAGING GROUP INC — high-priority violation on file | RIDGEFIELD, Bergen, NJ | Fail | State |
| 2021-10-21 | PHILLIPS 66 (BAYWAY REF/CONOCO) — high-priority violation on file | LINDEN, Union, NJ | Pass | State |
| 2021-10-21 | ENTERPRISE - OXY SAND DUNES NORTH COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-10-21 | ENTERPRISE - OXY SAND DUNES NORTH COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-10-21 | JERRITT CANYON MINE — high-priority violation on file | ELKO, Elko, NV | Fail | State |
| 2021-10-21 | CAESARS ENTERTAINMENT INCORPORATED - CAESARS CONSOLIDATED PROPERTIES | LAS VEGAS, Clark, NV | Pass | Local |
| 2021-10-21 | ENLINK MIDSTREAM SERVICES LLC / SAPPHIRE COMPRESSOR STATION | CALUMET, Canadian, OK | Pass | State |
| 2021-10-21 | GREAT HORNED OWLS LLC / SEBRANEK 1 2 11 12 PAD | DOUGLAS, Garfield, OK | Pass | State |
| 2021-10-21 | GULFPORT MIDCON LLC / FRICK A PAD | ALEX, Grady, OK | Pass | State |
| 2021-10-21 | MARKWEST OKLAHOMA GAS CO LLC / STUART SOUTH COMPRESSOR STATION | STUART, Hughes, OK | Pass | State |
| 2021-10-21 | GREAT HORNED OWLS LLC / JARDOT SOS A 36 2 36 3 PAD | STILLWATER, Payne, OK | Pass | State |
| 2021-10-21 | DIVERSIFIED PRODUCTION LLC / SCHULTZ 2H 15 | ALVA, Woods, OK | Pass | State |
| 2021-10-21 | ET GATHERING PROCESSING LLC / ROSE VALLEY PLANT | ALVA, Woods, OK | Pass | State |
| 2021-10-21 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/JOHNSTON COMP STA | CANONSBURG, Washington, PA | Pass | State |
| 2021-10-21 | MARKWEST LIBERTY MIDSTREAM/WELLING COMP STA | CLAYSVILLE, Washington, PA | Pass | State |
| 2021-10-21 | MILLIKEN & COMPANY - MAGNOLIA FINISHING PLANT | BLACKSBURG, Cherokee, SC | Pass | State |
| 2021-10-21 | GCC DACOTAH — high-priority violation on file | RAPID CITY, Pennington, SD | Pass | State |
| 2021-10-21 | MAGPRO, LLC | CAMDEN, Benton, TN | Pass | State |
| 2021-10-21 | TENNESSEE OPERATIONS OF EASTMAN CHEMICAL COMPANY — high-priority violation on file | KINGSPORT, Sullivan, TN | Pass | State |
| 2021-10-21 | BUDA PLANT | BUDA, Hays, TX | Pass | State |
| 2021-10-21 | SIERRA PACIFIC IND.- SKAGIT LUMBER | MOUNT VERNON, Skagit, WA | Pass | Local |
| 2021-10-21 | KAISER ALUMINUM WASHINGTON, LLC | SPOKANE, Spokane, WA | Pass | Local |
| 2021-10-21 | KAISER ALUMINUM WASHINGTON, LLC | SPOKANE, Spokane, WA | Pass | Local |
| 2021-10-21 | ERGON - WEST VIRGINIA, INC., NEWELL | NEWELL, Hancock, WV | Pass | State |
| 2021-10-21 | MARION COUNTY COAL RESOURCES, INC., MARION COUNTY PREP PLANT | FAIRVIEW, Marion, WV | Pass | State |
| 2021-10-21 | OMNIS PLEASANTS, LLC, PLEASANTS POWER STATION | WILLOW ISLAND, Pleasants, WV | Pass | State |
| 2021-10-21 | COLUMBIA GAS TRANSMISSION, LLC, CLEVELAND | KANAWHA HEAD, Upshur, WV | Pass | State |
| 2021-10-21 | BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2021-10-21 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2021-10-20 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2021-10-20 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2021-10-20 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2021-10-20 | KNAUF INSULATION | LANETT, Chambers, AL | Pass | State |
| 2021-10-20 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2021-10-20 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2021-10-20 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2021-10-20 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2021-10-20 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2021-10-20 | WELLBORN CABINETS INC | ASHLAND, Clay, AL | Pass | State |
| 2021-10-20 | U S SILICA COMPANY | HURTSBORO, Russell, AL | Pass | State |
| 2021-10-20 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | SWEET WATER, Marengo, AL | Pass | State |
| 2021-10-20 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | SWEET WATER, Marengo, AL | Pass | State |
| 2021-10-20 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | SWEET WATER, Marengo, AL | Pass | State |
| 2021-10-20 | SANDERS LEAD CO | TROY, Pike, AL | Pass | State |
| 2021-10-20 | SANDERS LEAD CO | TROY, Pike, AL | Pass | State |
| 2021-10-20 | DESOTO GATHERING COMPANY, LLC - MIDGE CPF-5 | HEBER SPRINGS, Cleburne, AR | Pass | State |
| 2021-10-20 | DESOTO GATHERING COMPANY, LLC - MIDGE CPF-5 | HEBER SPRINGS, Cleburne, AR | Pass | State |
| 2021-10-20 | RAZORBACK GATHERING COMPANY, LLC. - ROSE BUD COMPRESSOR STATION | SEARCY, White, AR | Pass | State |
| 2021-10-20 | RAZORBACK GATHERING COMPANY, LLC. - ROSE BUD COMPRESSOR STATION | SEARCY, White, AR | Pass | State |
| 2021-10-20 | SO CAL GAS - BLYTHE | BLYTHE, Riverside, CA | Pass | Local |
| 2021-10-20 | UCSD | LA JOLLA, San Diego, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2021-10-20 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.