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 |
|---|---|---|---|---|
| 2023-09-13 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-13 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-13 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-13 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-13 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-13 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2023-09-13 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2023-09-13 | PCS PHOSPHATE COMPANY, INC. - AURORA | AURORA, Beaufort, NC | Pass | State |
| 2023-09-13 | CHEMOURS COMPANY - FAYETTEVILLE WORKS | FAYETTEVILLE, Bladen, NC | Pending | State |
| 2023-09-13 | BASIN ELECTRIC POWER COOPERATIVE - ANTELOPE VALLEY STATION (AVS) - AQ | BEULAH, Mercer, ND | Pass | State |
| 2023-09-13 | WOLVERINE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-13 | GCC RIO GRANDE INC-TIJERAS PLANT | TIJERAS, Bernalillo, NM | Pass | Local |
| 2023-09-13 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2023-09-13 | AMRIZE RAVENA FACILITY | COEYMANS, Albany, NY | Pass | State |
| 2023-09-13 | ULTIUM CELLS LLC | WARREN, Trumbull, OH | Pass | State |
| 2023-09-13 | ASCENT RESOURCES - UTICA LLC - HASTINGS WHL BL | FLUSHING, Belmont, OH | Pass | State |
| 2023-09-13 | ASCENT RESOURCES - UTICA LLC - HASTINGS WHL BL | FLUSHING, Belmont, OH | Pass | State |
| 2023-09-13 | ASCENT RESOURCES - UTICA LLC - HASTINGS WHL BL | FLUSHING, Belmont, OH | Pass | State |
| 2023-09-13 | ASCENT RESOURCES - UTICA LLC - CRAVAT WHL BL WELL PAD | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2023-09-13 | ASCENT RESOURCES - UTICA LLC - CRAVAT WHL BL WELL PAD | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2023-09-13 | ASCENT RESOURCES - UTICA LLC - CRAVAT WHL BL WELL PAD | SAINT CLAIRSVILLE, Belmont, OH | Pass | State |
| 2023-09-13 | CORRCHOICE, LLC - MASSILLON MILL — high-priority violation on file | MASSILLON, Stark, OH | Pass | State |
| 2023-09-13 | ET GATHERING PROCESSING LLC / JET COMPRESSOR STATION | JET, Alfalfa, OK | Pass | State |
| 2023-09-13 | MARKWEST OKLAHOMA GAS CO LLC / ALPHA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-09-13 | MARKWEST OKLAHOMA GAS CO LLC / ALPHA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-09-13 | VALIDUS ENERGY II MIDCON LLC / NIEMYER PAD | CASHION, Kingfisher, OK | Pass | State |
| 2023-09-13 | VALIDUS ENERGY II MIDCON LLC / BRITT PAD | CASHION, Kingfisher, OK | Pass | State |
| 2023-09-13 | VALIDUS ENERGY II MIDCON LLC / WOLF PAD | CASHION, Kingfisher, OK | Pass | State |
| 2023-09-13 | VALIDUS ENERGY II MIDCON LLC / MOTIE PAD | CEDAR VALLEY, Logan, OK | Pass | State |
| 2023-09-13 | ET GATHERING PROCESSING LLC / ELY COMPRESSOR STATION | VELMA, Stephens, OK | Pass | State |
| 2023-09-13 | CLEVELAND CLIFFS PLATE/COATESVILLE | COATESVILLE, Chester, PA | Pass | State |
| 2023-09-13 | ARMSTRONG POWER/S BEND | SHELOCTA, Armstrong, PA | Pass | State |
| 2023-09-13 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/LOWRY COMP STA | AVELLA, Washington, PA | Pass | State |
| 2023-09-13 | REV LNG SSL BC LLC/NICHE LNG LLC - TOWANDA FAC | WYALUSING, Bradford, PA | Pass | State |
| 2023-09-13 | SOUTHWESTERN ENERGY CO/KOZIOL 5H-6H | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2023-09-13 | WILLIAMS FIELD SVC CO/MACNEW COMP STA | HOP BOTTOM, Susquehanna, PA | Pass | State |
| 2023-09-13 | MANCHESTER STREET, LLC | PROVIDENCE, Providence, RI | Pass | State |
| 2023-09-13 | EVERRIS NA INC CHARLESTON | N CHARLESTON, Charleston, SC | Pass | State |
| 2023-09-13 | KING ASPHALT INC - MULLINS — high-priority violation on file | MULLINS, Marion, SC | Pass | State |
| 2023-09-13 | HUB CITY ENERGY, LLC — high-priority violation on file | ABERDEEN, Brown, SD | Fail | State |
| 2023-09-13 | TENNESSEE VALLEY AUTHORITY - CUMBERLAND FOSSIL PLANT — high-priority violation on file | CUMBERLAND CITY, Stewart, TN | Pass | State |
| 2023-09-13 | INTERMOUNTAIN POWER SERVICE CORPORATION | DELTA, Millard, UT | Pass | State |
| 2023-09-13 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2023-09-13 | WASTE TO ENERGY | SPOKANE, Spokane, WA | Pass | Local |
| 2023-09-13 | APPALACHIA MIDSTREAM SERVICES, L.L.C., MILLER STATION | BANNEN, Marshall, WV | Pass | State |
| 2023-09-13 | JAY-BEE OIL & GAS, INC., T1-03 | ALMA, Tyler, WV | Pass | State |
| 2023-09-13 | EUREKA MIDSTREAM, LLC, CARBIDE SITE | HASTINGS, Wetzel, WV | Pass | State |
| 2023-09-13 | MUDDY CREEK STATION (KERN RIVER GAS TRANS) | LINCOLN COUNTY, Lincoln, WY | Pass | State |
| 2023-09-13 | MUDDY CREEK STATION (KERN RIVER GAS TRANS) | LINCOLN COUNTY, Lincoln, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-13 | HANSEN LAKE COMPRESSOR STATION (WILLIAMS FIELD SERVICES CO.) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-12 | HYUNDAI MOTOR MANUFACTURING ALABAMA LLC. | MONTGOMERY, Montgomery, AL | Pass | State |
| 2023-09-12 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Pass | State |
| 2023-09-12 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Pass | State |
| 2023-09-12 | HUNT REFINING COMPANY | TUSCALOOSA, Tuscaloosa, AL | Pass | State |
| 2023-09-12 | HUNT REFINING COMPANY | TUSCALOOSA, Tuscaloosa, AL | Pass | State |
| 2023-09-12 | ENABLE GAS TRANSMISSION, LLC - BEIRNE COMPRESSOR STATION | GURDON, Clark, AR | Pass | State |
| 2023-09-12 | PARAGOULD CITY LIGHT & WATER | PARAGOULD, Greene, AR | Pass | State |
| 2023-09-12 | PARAGOULD CITY LIGHT & WATER | PARAGOULD, Greene, AR | Pass | State |
| 2023-09-12 | PARAGOULD CITY LIGHT & WATER | PARAGOULD, Greene, AR | Pass | State |
| 2023-09-12 | PARAGOULD CITY LIGHT & WATER | PARAGOULD, Greene, AR | Pass | State |
| 2023-09-12 | PARAGOULD CITY LIGHT & WATER | PARAGOULD, Greene, AR | Pass | State |
| 2023-09-12 | PLUM POINT SERVICES COMPANY, LLC - PLUM POINT ENERGY STATION | OSCEOLA, Mississippi, AR | Pass | State |
| 2023-09-12 | MAGELLAN PIPELINE CO LP- NLR - SOUTH TERMINAL | NORTH LITTLE ROCK, Pulaski, AR | Pass | State |
| 2023-09-12 | DESOTO GATHERING COMPANY, LLC - TIGER CPF 2 | JUDSONIA, White, AR | Pass | State |
| 2023-09-12 | DESOTO GATHERING COMPANY, LLC - TIGER CPF 2 | JUDSONIA, White, AR | Pass | State |
| 2023-09-12 | APACHE GENERATING STATION | COCHISE, Cochise, AZ | Pass | State |
| 2023-09-12 | DRAKE CEMENT- DRAKE ROAD SITE — high-priority violation on file | PAULDEN, Yavapai, AZ | Pass | State |
| 2023-09-12 | ANHEUSER-BUSCH LLC., (LA BREWERY) | VAN NUYS, Los Angeles, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA INC | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA INC | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA INC | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA INC | COALINGA, Fresno, CA | Pass | Local |
| 2023-09-12 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | KERN OIL & REFINING — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.