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 |
|---|---|---|---|---|
| 2024-09-25 | POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file | CLOVERDALE, Putnam, IN | Pass | State |
| 2024-09-25 | POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file | CLOVERDALE, Putnam, IN | Pass | State |
| 2024-09-25 | POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file | CLOVERDALE, Putnam, IN | Pass | State |
| 2024-09-25 | POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file | CLOVERDALE, Putnam, IN | Pass | State |
| 2024-09-25 | POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file | CLOVERDALE, Putnam, IN | Pass | State |
| 2024-09-25 | POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file | CLOVERDALE, Putnam, IN | Pass | State |
| 2024-09-25 | POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file | CLOVERDALE, Putnam, IN | Pass | State |
| 2024-09-25 | POET BIOREFINING - CLOVERDALE LLC — high-priority violation on file | CLOVERDALE, Putnam, IN | Pass | State |
| 2024-09-25 | ANR PIPELINE CO (MADISONVILLE COMPRESSOR STA) | MADISONVILLE, Hopkins, KY | Pass | State |
| 2024-09-25 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2024-09-25 | SHINTECH LOUISIANA LLC - SHINTECH PLAQUEMINE PLANT | PLAQUEMINE, Iberville, LA | Pass | State |
| 2024-09-25 | LEHIGH CEMENT COMPANY - UNION BRIDGE | UNION BRIDGE, Carroll, MD | Pass | State |
| 2024-09-25 | AMRIZE MIDWEST INC - NONMETALLIC | EAGAN, Dakota, MN | Pass | State |
| 2024-09-25 | SIKESTON POWER STATION | SIKESTON, Scott, MO | Pass | State |
| 2024-09-25 | GULF SOUTH PIPELINE COMPANY LLC, PETAL COMPRESSOR STATION | PETAL, Forrest, MS | Pass | State |
| 2024-09-25 | GULF SOUTH PIPELINE COMPANY LLC, PETAL COMPRESSOR STATION | PETAL, Forrest, MS | Pass | State |
| 2024-09-25 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2024-09-25 | WESTLAKE CHEMICALS AND VINYLS LLC | ABERDEEN, Monroe, MS | Pass | State |
| 2024-09-25 | LOUISIANA-PACIFIC CORPORATION - ROXBORO — high-priority violation on file | ROXBORO, Person, NC | Pass | State |
| 2024-09-25 | VALDEZ BOOSTER STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-25 | VALDEZ BOOSTER STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-25 | EOG - QUAIL COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-25 | EOG - QUAIL COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-25 | EOG - QUAIL COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-25 | VICTORY COMPRESSOR STATION | LA HUERTA, Eddy, NM | Pass | State |
| 2024-09-25 | VICTORY COMPRESSOR STATION | LA HUERTA, Eddy, NM | Pass | State |
| 2024-09-25 | PROCLAMATION LOCALIZED GAS LIFT STATION | JAL, Lea, NM | Pass | State |
| 2024-09-25 | PROCLAMATION LOCALIZED GAS LIFT STATION | JAL, Lea, NM | Pass | State |
| 2024-09-25 | GENIE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-09-25 | GENIE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-09-25 | CORIANDER COMPRESSOR STATION | EUNICE, Lea, NM | Pass | State |
| 2024-09-25 | CORIANDER COMPRESSOR STATION | EUNICE, Lea, NM | Pass | State |
| 2024-09-25 | ASCENT RESOURCES - UTICA LLC - DONNA LND GR | LONDONDERRY, TOWNSHIP OF, Guernsey, OH | Pass | State |
| 2024-09-25 | ASCENT RESOURCES - UTICA LLC - DONNA LND GR | LONDONDERRY, TOWNSHIP OF, Guernsey, OH | Pass | State |
| 2024-09-25 | ASCENT RESOURCES - UTICA LLC - DONNA LND GR | LONDONDERRY, TOWNSHIP OF, Guernsey, OH | Pass | State |
| 2024-09-25 | SHROYER PAD 952884 | CLARINGTON, Monroe, OH | Pass | State |
| 2024-09-25 | SHROYER PAD 952884 | CLARINGTON, Monroe, OH | Pass | State |
| 2024-09-25 | SHROYER PAD 952884 | CLARINGTON, Monroe, OH | Pass | State |
| 2024-09-25 | THE MEDICAL CENTER COMPANY | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2024-09-25 | THE MEDICAL CENTER COMPANY | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2024-09-25 | ET GATHERING PROCESSING LLC / TABLER COMPRESSOR STATION | TABLER, Grady, OK | Pass | State |
| 2024-09-25 | MERIT ENERGY CO / SERVICE DRILLING STATION | LEQUIRE, Haskell, OK | Pass | State |
| 2024-09-25 | MARKWEST OKLAHOMA GAS CO LLC / SHERMAN ELLIS COMPRESSOR STATION | HAYWOOD, Pittsburg, OK | Pass | State |
| 2024-09-25 | MARKWEST OKLAHOMA GAS CO LLC / CALHOUN COMPRESSOR STATION | MCALESTER, Pittsburg, OK | Pass | State |
| 2024-09-25 | EQUITRANS LP/RAGER MTN LAUREL RIDGE STA — high-priority violation on file | JOHNSTOWN, Cambria, PA | Pass | State |
| 2024-09-25 | EQUITRANS LP/RAGER MTN LAUREL RIDGE STA — high-priority violation on file | JOHNSTOWN, Cambria, PA | Pass | State |
| 2024-09-25 | HAYSITE REINFORCED PLASTICS LLC/ERIE — high-priority violation on file | ERIE, Erie, PA | Pass | State |
| 2024-09-25 | EQT ARO LLC/COP TRACT 685 COMP STA — high-priority violation on file | JERSEY SHORE, Lycoming, PA | Pass | State |
| 2024-09-25 | EQT ARO LLC/VARGO COMP STA — high-priority violation on file | TROUT RUN, Lycoming, PA | Pass | State |
| 2024-09-25 | SANTEE COOPER WINYAH GENERATING STATION | GEORGETOWN, Georgetown, SC | Pass | State |
| 2024-09-25 | THOMPSON APPALACHIAN HARDWOODS, INC. — high-priority violation on file | HUNTLAND, Franklin, TN | Fail | State |
| 2024-09-25 | SA RECYCLING LLC | HARRIMAN, Roane, TN | Pass | State |
| 2024-09-25 | EXXONMOBIL OIL CORP. (EMOC) | MEMPHIS, Shelby, TN | Pass | Local |
| 2024-09-25 | EAST LONGHORN CENTRAL FACILITY | KARNES CITY, Karnes, TX | Pass | State |
| 2024-09-25 | APPALACHIA MIDSTREAM SERVICES, L.L.C., THREEDUBS STATION | WELLSBURG, Brooke, WV | Pass | State |
| 2024-09-25 | ANTERO MIDSTREAM LLC, MIDDLEBOURNE V | MIDDLEBOURNE, Tyler, WV | Pass | State |
| 2024-09-25 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-09-25 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-09-25 | ELK BASIN GAS PLANT (BROTHERS PETROLEUM LLC) | PARK COUNTY, Park, WY | Pass | State |
| 2024-09-25 | ELK BASIN GAS PLANT (BROTHERS PETROLEUM LLC) | PARK COUNTY, Park, WY | Pass | State |
| 2024-09-25 | ELK BASIN GAS PLANT (BROTHERS PETROLEUM LLC) | PARK COUNTY, Park, WY | Pass | State |
| 2024-09-24 | BLUECREST ALASKA OPERATING LLC / COSMOPOLITAN PROJECT | KENAI, Kenai Peninsula, AK | Pass | State |
| 2024-09-24 | BLUECREST ALASKA OPERATING LLC / COSMOPOLITAN PROJECT | KENAI, Kenai Peninsula, AK | Pass | State |
| 2024-09-24 | WESTROCK COATED BOARD LLC-MAHRT MILL | PHENIX CITY, Russell, AL | Pass | State |
| 2024-09-24 | WESTROCK COATED BOARD LLC-MAHRT MILL | PHENIX CITY, Russell, AL | Pass | State |
| 2024-09-24 | WESTROCK COATED BOARD LLC-MAHRT MILL | PHENIX CITY, Russell, AL | Pass | State |
| 2024-09-24 | DESOTO GATHERING COMPANY LLC - NEW QUITMAN CPF-4 | QUITMAN, Faulkner, AR | Pass | State |
| 2024-09-24 | DESOTO GATHERING COMPANY, LLC - YOGI CPF-1 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2024-09-24 | DESOTO GATHERING COMPANY, LLC - YOGI CPF-1 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2024-09-24 | SOUTHWESTERN ELECTIRC POWER COMPANY - HARRY D. MATTISON POWER PLANT | TONTITOWN, Washington, AR | Pass | State |
| 2024-09-24 | TOPOCK LNG PLANT 1 COOLING WATER BLOWDOWN POND | TOPOCK, Mohave, AZ | Pass | State |
| 2024-09-24 | SFPPLP | SAN DIEGO, San Diego, CA | Pending | Local |
| 2024-09-24 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-24 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-24 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-24 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2024-09-24 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.