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 |
|---|---|---|---|---|
| 2024-08-28 | BONNYMAN COMPRESSOR STATION | LOVING, Lea, NM | Pass | State |
| 2024-08-28 | EL CAMPEON CTB 17N | JAL, Lea, NM | Pass | State |
| 2024-08-28 | ISLIP MACARTHUR RESOURCE RECOVERY FACILITY | RONKONKOMA, Suffolk, NY | Pass | State |
| 2024-08-28 | SEAMAN CORPORATION | WOOSTER, Wayne, OH | Pass | State |
| 2024-08-28 | SEAMAN CORPORATION | WOOSTER, Wayne, OH | Pass | State |
| 2024-08-28 | SEAMAN CORPORATION | WOOSTER, Wayne, OH | Pass | State |
| 2024-08-28 | GUERNSEY POWER STATION LLC | BYESVILLE, Guernsey, OH | Pass | State |
| 2024-08-28 | GUERNSEY POWER STATION LLC | BYESVILLE, Guernsey, OH | Pass | State |
| 2024-08-28 | GUERNSEY POWER STATION LLC | BYESVILLE, Guernsey, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | WILLIAMS ARCHER COMPRESSOR STATION | CADIZ, Harrison, OH | Pass | State |
| 2024-08-28 | ET GATHERING PROCESSING LLC / RELAY CREEK COMPRESSOR STATION | GREENFIELD, Blaine, OK | Pass | State |
| 2024-08-28 | MARKWEST OKLAHOMA GAS CO LLC / WOMACK COMPRESSOR STATION | COALGATE, Coal, OK | Pass | State |
| 2024-08-28 | MARKWEST OKLAHOMA GAS CO LLC / WOMACK COMPRESSOR STATION | COALGATE, Coal, OK | Pass | State |
| 2024-08-28 | CONTINENTAL RESOURCES / GREEN ACRES 1 36H | MIDDLEBERG, Grady, OK | Pass | State |
| 2024-08-28 | CONTINENTAL RESOURCES / HANSELL 5 3 3 34XHW 7 3 34XHW | BLANCHARD, Grady, OK | Pass | State |
| 2024-08-28 | BCE MACH III LLC / LNU 81 3HO 82 5HO 52 2HO | DOVER, Kingfisher, OK | Pass | State |
| 2024-08-28 | BCE MACH III LLC / LSEOU 49 5LO LSEOU 49 4HO LSEOU 49 3HO | CRESCENT, Kingfisher, OK | Pass | State |
| 2024-08-28 | ET GATHERING PROCESSING LLC / ELY COMPRESSOR STATION | VELMA, Stephens, OK | Pass | State |
| 2024-08-28 | FRY COMMUNICATIONS INC/BLDG 3 | MECHANICSBURG, Cumberland, PA | Pass | State |
| 2024-08-28 | SWN PROD CO LLC/DEPUE COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-08-28 | SWN PROD CO FIONDI SITE COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-08-28 | RIVERWEST APPALACHIA MIDSTREAM LLC/CLINTON COMP STA | SARVER, Butler, PA | Pass | State |
| 2024-08-28 | EQM GATHERING OPCO LLC/STEELHEAD COMP STA | MARIANNA, Washington, PA | Pass | State |
| 2024-08-28 | JKLM ENERGY LLC/HEADWATERS 145 WELL PAD | ULYSSES, Potter, PA | Pass | State |
| 2024-08-28 | EXPAND OPERATING LLC/NICKOLYN WELL PAD | AUBURN, Susquehanna, PA | Pass | State |
| 2024-08-28 | LANXESS CORPORATION - CHARLESTON FACILITY — high-priority violation on file | CHARLESTON, Charleston, SC | Pending | State |
| 2024-08-28 | VULCAN CONSTRUCTION MATERIALS LLC LEXINGTON QUARRY | LEESVILLE, Lexington, SC | Pass | State |
| 2024-08-28 | C R JACKSON INC - SUMTER ASPHALT PLANT | SUMTER, Sumter, SC | Pass | State |
| 2024-08-28 | VALERO RENEWABLE FUELS COMPANY LLC — high-priority violation on file | AURORA, Brookings, SD | Pending | State |
| 2024-08-28 | ENVIVA SOUTHAMPTON | FRANKLIN, Southampton, VA | Pass | State |
| 2024-08-28 | PUGET SOUND ENERGY FERNDALE | FERNDALE, Whatcom, WA | Pass | Local |
| 2024-08-28 | BP WEST COAST PRODUCTS LLC — high-priority violation on file | BLAINE, Whatcom, WA | Pass | Local |
| 2024-08-28 | ICON MATERIALS | AUBURN, King, WA | Pass | Local |
| 2024-08-28 | SPECIALTY GRANULES LLC | PEMBINE, Marinette, WI | Pass | State |
| 2024-08-28 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2024-08-28 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2024-08-27 | GOLDEN VALLEY ELECTRIC ASSOCIATION / NORTH POLE POWER PLANT | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2024-08-27 | INTERNATIONAL PAPER COMPANY | PRATTVILLE, Autauga, AL | Pass | State |
| 2024-08-27 | INTERNATIONAL PAPER COMPANY | PRATTVILLE, Autauga, AL | Pass | State |
| 2024-08-27 | CONSTELLIUM — high-priority violation on file | MUSCLE SHOALS, Colbert, AL | Pass | State |
| 2024-08-27 | WESTROCK COATED BOARD LLC-MAHRT MILL | PHENIX CITY, Russell, AL | Pass | State |
| 2024-08-27 | WESTROCK COATED BOARD LLC-MAHRT MILL | PHENIX CITY, Russell, AL | Pass | State |
| 2024-08-27 | HUNT REFINING COMPANY | TUSCALOOSA, Tuscaloosa, AL | Pass | State |
| 2024-08-27 | HUNT REFINING COMPANY | TUSCALOOSA, Tuscaloosa, AL | Pass | State |
| 2024-08-27 | AMRIZE BUILDING ENVELOPE LLC. | PRESCOTT, Nevada, AR | Pass | State |
| 2024-08-27 | CEMEX LLC - BLACK MT. QUARRY | APPLE VALLEY, San Bernardino, CA | Pass | Local |
| 2024-08-27 | CEMEX LLC - BLACK MT. QUARRY | APPLE VALLEY, San Bernardino, CA | Pass | Local |
| 2024-08-27 | CEMEX LLC - BLACK MT. QUARRY | APPLE VALLEY, San Bernardino, CA | Pass | Local |
| 2024-08-27 | CEMEX LLC - BLACK MT. QUARRY | APPLE VALLEY, San Bernardino, CA | Pass | Local |
| 2024-08-27 | BREA PARENT 2007, LLC | BREA, Orange, CA | Pass | Local |
| 2024-08-27 | BREA PARENT 2007, LLC | BREA, Orange, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-08-27 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-27 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-27 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-27 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-27 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-27 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-27 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-27 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-27 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
| 2024-08-27 | WEST KERN WATER DISTRICT | TAFT, Kern, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.