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 |
|---|---|---|---|---|
| 2023-08-16 | MERIT ENERGY COMPANY, LLC - STEPHENS-MCBRIDE COMPRESSOR STATION | LAVACA, Sebastian, AR | Pass | State |
| 2023-08-16 | SO CAL GAS CO | VALENCIA, Los Angeles, CA | Pass | Local |
| 2023-08-16 | STANISLAUS FOOD PRODUCTS CO — high-priority violation on file | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-08-16 | STANISLAUS FOOD PRODUCTS CO — high-priority violation on file | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-08-16 | STANISLAUS FOOD PRODUCTS CO — high-priority violation on file | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-08-16 | NRO - AEROSPACE DATA FACIITY (ADF-C) | AURORA, Arapahoe, CO | Pass | State |
| 2023-08-16 | NRO - AEROSPACE DATA FACIITY (ADF-C) | AURORA, Arapahoe, CO | Pass | State |
| 2023-08-16 | DCP OPERATING CO - O'CONNOR GAS PLANT | KERSEY AREA, Weld, CO | Pass | State |
| 2023-08-16 | DC WATER (BLUE PLAINS WASTEWATER TREATMENT FACILITY) — high-priority violation on file | WASHINGTON, District of Columbia, DC | Pass | State |
| 2023-08-16 | DC WATER (BLUE PLAINS WASTEWATER TREATMENT FACILITY) — high-priority violation on file | WASHINGTON, District of Columbia, DC | Pass | State |
| 2023-08-16 | DC WATER (BLUE PLAINS WASTEWATER TREATMENT FACILITY) — high-priority violation on file | WASHINGTON, District of Columbia, DC | Pass | State |
| 2023-08-16 | DC WATER (BLUE PLAINS WASTEWATER TREATMENT FACILITY) — high-priority violation on file | WASHINGTON, District of Columbia, DC | Pass | State |
| 2023-08-16 | DC WATER (BLUE PLAINS WASTEWATER TREATMENT FACILITY) — high-priority violation on file | WASHINGTON, District of Columbia, DC | Pass | State |
| 2023-08-16 | ENVIVA, LLC | COTTONDALE, Jackson, FL | Pass | State |
| 2023-08-16 | ENVIVA, LLC | COTTONDALE, Jackson, FL | Pass | State |
| 2023-08-16 | CITGO PETROLEUM CORPORATION | NICEVILLE, Okaloosa, FL | Pass | State |
| 2023-08-16 | FLORIDA POWER AND LIGHT COMPANY | LOXAHATCHEE, Palm Beach, FL | Pass | State |
| 2023-08-16 | FLORIDA POWER AND LIGHT COMPANY | LOXAHATCHEE, Palm Beach, FL | Pass | State |
| 2023-08-16 | POLYGLASS USA, INC. | WINTER HAVEN, Polk, FL | Pass | State |
| 2023-08-16 | NUCOR STEEL FLORIDA, INC. | FROSTPROOF, Polk, FL | Pass | State |
| 2023-08-16 | SANTA ROSA ENERGY CTR, LLC | PACE, Santa Rosa, FL | Pass | State |
| 2023-08-16 | SANTA ROSA ENERGY CTR, LLC | PACE, Santa Rosa, FL | Pass | State |
| 2023-08-16 | GEORGIA-PACIFIC CEDAR SPRINGS LLC | CEDAR SPRINGS, Early, GA | Pass | State |
| 2023-08-16 | INTERNATIONAL PAPER COMPANY - ROME MILL | ROME, Floyd, GA | Pass | State |
| 2023-08-16 | INTERNATIONAL PAPER COMPANY - ROME MILL | ROME, Floyd, GA | Pass | State |
| 2023-08-16 | INTERNATIONAL PAPER COMPANY - ROME MILL | ROME, Floyd, GA | Pass | State |
| 2023-08-16 | INTERNATIONAL PAPER COMPANY - ROME MILL | ROME, Floyd, GA | Pass | State |
| 2023-08-16 | ATLANTA GAS LIGHT COMPANY - MACON LNG PLANT | MACON, Jones, GA | Pass | State |
| 2023-08-16 | ATLANTA GAS LIGHT COMPANY - MACON LNG PLANT | MACON, Jones, GA | Pass | State |
| 2023-08-16 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2023-08-16 | LOUIS DREYFUS COMPANY GRAND JUNCTION, LLC | GRAND JUNCTION, Greene, IA | Pass | State |
| 2023-08-16 | LOUIS DREYFUS COMPANY GRAND JUNCTION, LLC | GRAND JUNCTION, Greene, IA | Pass | State |
| 2023-08-16 | SSAB IOWA INC — high-priority violation on file | MUSCATINE, Muscatine, IA | Pass | State |
| 2023-08-16 | SSAB IOWA INC — high-priority violation on file | MUSCATINE, Muscatine, IA | Pass | State |
| 2023-08-16 | C & D TECHNOLOGIES INC | ATTICA, Fountain, IN | Pass | State |
| 2023-08-16 | C & D TECHNOLOGIES INC | ATTICA, Fountain, IN | Pass | State |
| 2023-08-16 | CARGILL INC — high-priority violation on file | HAMMOND, Lake, IN | Pass | State |
| 2023-08-16 | CARGILL INC — high-priority violation on file | HAMMOND, Lake, IN | Pass | State |
| 2023-08-16 | LOUISVILLE GAS & ELECTRIC COMPANY, MILL CREEK GENERATING STATION | LOUISVILLE, Jefferson, KY | Pass | Local |
| 2023-08-16 | ANGSTROM FIBER AUBURN, LLC | AUBURN, Androscoggin, ME | Pass | State |
| 2023-08-16 | GREEN PLAINS OTTER TAIL LLC | FERGUS FALLS, Otter Tail, MN | Fail | State |
| 2023-08-16 | NEWPORT TERMINAL LLC | NEWPORT, Washington, MN | Pass | State |
| 2023-08-16 | TESORO REFINING & MARKETING COMPANY LLC - MARATHON MANDAN REFINERY - AQ | MANDAN, Morton, ND | Pass | State |
| 2023-08-16 | ALAMO COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-08-16 | ALAMO COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-08-16 | ALAMO COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-08-16 | MERCHANT TB | EUNICE, Lea, NM | Pass | State |
| 2023-08-16 | BLUE DIAMOND HILL GYPSUM — high-priority violation on file | BLUE DIAMOND, Clark, NV | Pass | Local |
| 2023-08-16 | OWENS CORNING ROOFING AND ASPHALT, LLC | MEDINA, Medina, OH | Pass | State |
| 2023-08-16 | OWENS CORNING ROOFING AND ASPHALT, LLC | MEDINA, Medina, OH | Pass | State |
| 2023-08-16 | OWENS CORNING ROOFING AND ASPHALT, LLC | MEDINA, Medina, OH | Pass | State |
| 2023-08-16 | OWENS CORNING ROOFING AND ASPHALT, LLC | MEDINA, Medina, OH | Pass | State |
| 2023-08-16 | DEVON ENERGY PRODUCTION CO LP / BRADFORD LAKE 23 PAD 1 | WATONGA, Blaine, OK | Pass | State |
| 2023-08-16 | DEVON ENERGY PRODUCTION CO LP / COLUMBINE 22 PAD 1 | WATONGA, Blaine, OK | Pass | State |
| 2023-08-16 | DEVON ENERGY PRODUCTION CO LP / DICKSON 21 PAD 2 | WATONGA, Blaine, OK | Pass | State |
| 2023-08-16 | ENLINK MIDSTREAM SERVICES LLC / RUBY COMPRESSOR STATION | CALUMET, Canadian, OK | Pass | State |
| 2023-08-16 | BCE MACH III MIDSTREAM HOLDINGS LLC / MARAL COMPRESSOR STATION | BISON, Garfield, OK | Pass | State |
| 2023-08-16 | MARKWEST OKLAHOMA GAS CO LLC / DOROTHY COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-08-16 | BCE MACH III MIDSTREAM HOLDINGS LLC / WAY SOUTH COMPRESSOR STATION | CASHION, Kingfisher, OK | Pass | State |
| 2023-08-16 | BCE MACH III MIDSTREAM HOLDINGS LLC / LUCKY COMPRESSOR STATION | CASHION, Kingfisher, OK | Pass | State |
| 2023-08-16 | PORTLAND GENERAL ELECTRIC COMPANY — high-priority violation on file | CLATSKANIE, Columbia, OR | Pass | State |
| 2023-08-16 | PORTLAND GENERAL ELECTRIC COMPANY — high-priority violation on file | CLATSKANIE, Columbia, OR | Fail | State |
| 2023-08-16 | GLOBAL PKG/OAKS | OAKS, Montgomery, PA | Pass | State |
| 2023-08-16 | JOHN MIDDLETON CO/KING OF PRUSSIA | KING OF PRUSSIA, Montgomery, PA | Pass | State |
| 2023-08-16 | STECKMAN RIDGE LP/CLEARVILLE | CLEARVILLE, Bedford, PA | Pass | State |
| 2023-08-16 | LAUREL MTN MIDSTREAM OPR LLC/DUNBAR COMP STA | DUNBAR, Fayette, PA | Pass | State |
| 2023-08-16 | REGENCY MARCELLUS GATHERING LLC/BRADFORD WEST COMP STA | GRANVILLE SUMMIT, Bradford, PA | Pass | State |
| 2023-08-16 | EXPAND OPERATING LLC/CAPPUCCI WELL PAD | MEHOOPANY, Wyoming, PA | Pass | State |
| 2023-08-16 | EXPAND OPERATING LLC/TIFFANY WYO PAD | LACEYVILLE, Wyoming, PA | Pass | State |
| 2023-08-16 | MOST, INC.- MISSOURI SMELTING TECHNOLOGY, INC. | JACKSON, Madison, TN | Pass | State |
| 2023-08-16 | NISSAN NORTH AMERICA, INC.- SMYRNA | SMYRNA, Rutherford, TN | Pass | State |
| 2023-08-16 | TENNESSEE OPERATIONS OF EASTMAN CHEMICAL COMPANY — high-priority violation on file | KINGSPORT, Sullivan, TN | Pass | State |
| 2023-08-16 | ALLEN COMBINED CYCLE PLANT - TVA | MEMPHIS, Shelby, TN | Pass | Local |
| 2023-08-16 | CHEMTRADE SOLUTIONS LLC | ANACORTES, Skagit, WA | Pass | Local |
| 2023-08-16 | HM PACIFIC NORTHWEST, INC. DBA CADMAN MATERIAL INC | KENMORE, King, WA | Pass | Local |
| 2023-08-16 | HM PACIFIC NORTHWEST, INC. DBA CADMAN MATERIAL INC | KENMORE, King, WA | Pass | Local |
| 2023-08-16 | HM PACIFIC NORTHWEST, INC. DBA CADMAN MATERIAL INC | KENMORE, King, WA | Pass | Local |
| 2023-08-16 | HM PACIFIC NORTHWEST, INC. DBA CADMAN MATERIAL INC | KENMORE, King, WA | Pass | Local |
| 2023-08-16 | XCEL ENERGY BAY FRONT GENERATING STATION | ASHLAND, Ashland, WI | Pass | State |
| 2023-08-16 | KADANT GRANTEK INC. | GREEN BAY, Brown, WI | Pass | State |
| 2023-08-16 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2023-08-16 | BIG ISLAND MINE & REFINERY (SISECAM WYOMING LLC) — high-priority violation on file | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-08-15 | COTTONWOOD WASH COMPRESSOR STATION | VERNAL, Uintah, UT | Pass | U.S. EPA |
| 2023-08-15 | COTTONWOOD WASH COMPRESSOR STATION | VERNAL, Uintah, UT | Pass | U.S. EPA |
| 2023-08-15 | GEORGIA PACIFIC | PENNINGTON, Choctaw, AL | Pass | State |
| 2023-08-15 | SOUTHERN NATURAL GAS | AUBURN, Lee, AL | Pass | State |
| 2023-08-15 | SOUTHERN NATURAL GAS | AUBURN, Lee, AL | Pass | State |
| 2023-08-15 | CEMEX LLC - BLACK MT. QUARRY | APPLE VALLEY, San Bernardino, CA | Pass | Local |
| 2023-08-15 | SO CAL GAS CO | VALENCIA, Los Angeles, CA | Fail | Local |
| 2023-08-15 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-15 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-15 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-15 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-15 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-15 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-15 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-08-15 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2023-08-15 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2023-08-15 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
| 2023-08-15 | LA PALOMA GENERATING PLANT | MCKITTRICK, Kern, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.