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 |
|---|---|---|---|---|
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2023-08-21 | WES DJ GAS PROC - WATTENBERG PLANT | AURORA, Adams, CO | Pass | State |
| 2023-08-21 | FMPA & KISSIMMEE UTILITY AUTHORITY | INTERCESSION CITY, Osceola, FL | Pass | State |
| 2023-08-21 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2023-08-21 | HEIDELBERG MATERIALS MIDWEST AGG INCORPORATED | FORT WAYNE, Allen, IN | Pass | State |
| 2023-08-21 | HEIDELBERG MATERIALS MIDWEST AGG INCORPORATED | FORT WAYNE, Allen, IN | Pass | State |
| 2023-08-21 | HEIDELBERG MATERIALS MIDWEST AGG INCORPORATED | FORT WAYNE, Allen, IN | Pass | State |
| 2023-08-21 | HEIDELBERG MATERIALS MIDWEST AGG INCORPORATED | FORT WAYNE, Allen, IN | Pass | State |
| 2023-08-21 | HEIDELBERG MATERIALS MIDWEST AGG INCORPORATED | FORT WAYNE, Allen, IN | Pass | State |
| 2023-08-21 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | Pass | State |
| 2023-08-21 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2023-08-21 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2023-08-21 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2023-08-21 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2023-08-21 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2023-08-21 | HESS NORTH DAKOTA PIPELINES LLC - HAWKEYE GAS FACILITY - AQ | CHARLSON, McKenzie, ND | Pass | State |
| 2023-08-21 | US SPACE FORCE - CAVALIER SPACE FORCE STATION - AQ | CAVALIER, Pembina, ND | Pass | State |
| 2023-08-21 | KAAPA ETHANOL RAVENNA LLC — high-priority violation on file | RAVENNA, Buffalo, NE | N/A | State |
| 2023-08-21 | WHOLESTONE FARMS COOPERATIVE — high-priority violation on file | FREMONT, Dodge, NE | N/A | State |
| 2023-08-21 | OPPD NEBRASKA CITY STATION | NEBRASKA CITY, Otoe, NE | Pass | State |
| 2023-08-21 | NPPD SHELDON STATION | HALLAM, Lancaster, NE | Pass | Local |
| 2023-08-21 | TIGER 14 FACILITY — high-priority violation on file | MALAGA, Eddy, NM | Pass | State |
| 2023-08-21 | BIG LIZARD COMPRESSOR STATION | EUNICE, Lea, NM | Pass | State |
| 2023-08-21 | KOKOSING MATERIALS INC - PLANT 514 — high-priority violation on file | GRAND RIVER, Lake, OH | Pass | State |
| 2023-08-21 | ALLIED CORPORATION PLANT #77 | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2023-08-21 | ALLIED CORPORATION PLANT #77 | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2023-08-21 | ALLIED CORPORATION PLANT #77 | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2023-08-21 | COTERRA ENERGY OPERATING CO / WALDO 1 18H FACILITY | CALUMET, Canadian, OK | Pass | State |
| 2023-08-21 | CAMINO NATURAL RESOURCES LLC / CHUCK NORRIS 1 PRODUCTION FACILITY | UNION CITY, Canadian, OK | Pass | State |
| 2023-08-21 | LATIGO PETROLEUM LLC / GARNER 1 22H15X10 PRODUCTION SITE | THOMAS, Custer, OK | Pass | State |
| 2023-08-21 | CAMINO NATURAL RESOURCES LLC / PAXTON 1 20H | TUTTLE, Grady, OK | Pass | State |
| 2023-08-21 | IRON HORSE MIDSTREAM LLC / REMINGTON COMPRESSOR STATION | MINCO, Grady, OK | Pass | State |
| 2023-08-21 | SUPERIOR MIDSTREAM LLC / CARNEY NE COMPRESSOR STATION | CARNEY, Lincoln, OK | Pass | State |
| 2023-08-21 | XTO ENERGY INC / CHAMPION COMPRESSOR STATION | MARIETTA, Love, OK | Pass | State |
| 2023-08-21 | DCP OPERATING CO LP / SHOLEM GAS PLANT | VELMA, Stephens, OK | Pass | State |
| 2023-08-21 | DCP OPERATING CO LP / SHOLEM GAS PLANT | VELMA, Stephens, OK | Pass | State |
| 2023-08-21 | TRANSCONTINENTAL GAS/BEAR CREEK STA 515 | BEAR CREEK, Luzerne, PA | Pass | State |
| 2023-08-21 | UNITED REFINING CO/WARREN PLT | WARREN, Warren, PA | Pass | State |
| 2023-08-21 | HILCORP ENERGY CO/LACKAWANNOCK LARMON CTL FAC | MERCER, Mercer, PA | Pass | State |
| 2023-08-21 | NEW-INDY CATAWBA LLC | CATAWBA, York, SC | Pass | State |
| 2023-08-21 | XCEL ENERGY BAY FRONT GENERATING STATION | ASHLAND, Ashland, WI | Pass | State |
| 2023-08-21 | BRADY WORLDWIDE - FLORIST AVE PLT | GLENDALE, Monroe, WI | Pass | State |
| 2023-08-21 | EQT XL MIDSTREAM OPERATING LLC, CHANNING COMPRESSOR | PROCTOR, Marshall, WV | Pass | State |
| 2023-08-19 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2023-08-19 | U S DEPT OF ENERGY-INL | IDAHO, Undetermined, ID | Pass | State |
| 2023-08-19 | CORRAL CANYON CS AND CTB | MALAGA, Eddy, NM | Pass | State |
| 2023-08-19 | CORRAL CANYON CS AND CTB | MALAGA, Eddy, NM | Pass | State |
| 2023-08-19 | CORRAL CANYON CS AND CTB | MALAGA, Eddy, NM | Pass | State |
| 2023-08-19 | OWENS CORNING ROOFING AND ASPHALT, LLC | MEDINA, Medina, OH | Pass | State |
| 2023-08-19 | OWENS CORNING ROOFING AND ASPHALT, LLC | MEDINA, Medina, OH | Pass | State |
| 2023-08-19 | OWENS CORNING ROOFING AND ASPHALT, LLC | MEDINA, Medina, OH | Pass | State |
| 2023-08-19 | OWENS CORNING ROOFING AND ASPHALT, LLC | MEDINA, Medina, OH | Pass | State |
| 2023-08-19 | OWENS CORNING ROOFING AND ASPHALT, LLC | MEDINA, Medina, OH | Pass | State |
| 2023-08-19 | LANXESS CORPORATION - CHARLESTON FACILITY — high-priority violation on file | CHARLESTON, Charleston, SC | Pass | State |
| 2023-08-19 | GRAYMONT (WI) LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Pass | State |
| 2023-08-18 | SOUTHERN NATURAL GAS | SELMA, Dallas, AL | Pass | State |
| 2023-08-18 | SOUTHERN NATURAL GAS | SELMA, Dallas, AL | Pass | State |
| 2023-08-18 | LINN OPERATING INC | KERN COUNTY, Kern, CA | Pass | Local |
| 2023-08-18 | LINN OPERATING INC | KERN COUNTY, Kern, CA | Pass | Local |
| 2023-08-18 | LINN OPERATING INC | KERN COUNTY, Kern, CA | Pass | Local |
| 2023-08-18 | LINN OPERATING INC | KERN COUNTY, Kern, CA | Pass | Local |
| 2023-08-18 | LINN OPERATING INC | KERN COUNTY, Kern, CA | Pass | Local |
| 2023-08-18 | LINN OPERATING INC | KERN COUNTY, Kern, CA | Pass | Local |
| 2023-08-18 | LINN OPERATING INC | KERN COUNTY, Kern, CA | Pass | Local |
| 2023-08-18 | LINN OPERATING INC | KERN COUNTY, Kern, CA | Pass | Local |
| 2023-08-18 | LINN OPERATING INC | KERN COUNTY, Kern, CA | Pass | Local |
| 2023-08-18 | LINN OPERATING INC | KERN COUNTY, Kern, CA | Pass | Local |
| 2023-08-18 | NRO - AEROSPACE DATA FACIITY (ADF-C) | AURORA, Arapahoe, CO | N/A | State |
| 2023-08-18 | NRO - AEROSPACE DATA FACIITY (ADF-C) | AURORA, Arapahoe, CO | Pass | State |
| 2023-08-18 | DC WATER (BLUE PLAINS WASTEWATER TREATMENT FACILITY) — high-priority violation on file | WASHINGTON, District of Columbia, DC | Pass | State |
| 2023-08-18 | HELCO - KEAHOLE — high-priority violation on file | KAILUA KONA, Hawaii, HI | Pass | State |
| 2023-08-18 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2023-08-18 | INDIANA MUNICIPAL POWER AGENCY-WHITEWATER VALLEY GENERATING | RICHMOND, Wayne, IN | Pass | State |
| 2023-08-18 | INDIANA MUNICIPAL POWER AGENCY-WHITEWATER VALLEY GENERATING | RICHMOND, Wayne, IN | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.