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 |
|---|---|---|---|---|
| 2023-09-12 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-12 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-12 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-12 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-12 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-12 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-12 | CHEMOURS COMPANY - FAYETTEVILLE WORKS | FAYETTEVILLE, Bladen, NC | Pending | State |
| 2023-09-12 | WESTROCK KRAFT PAPER, LLC | ROANOKE RAPIDS, Halifax, NC | Pending | State |
| 2023-09-12 | DOMTAR PAPER COMPANY, LLC | PLYMOUTH, Martin, NC | Pass | State |
| 2023-09-12 | CAROLINA STALITE COMPANY | NORWOOD, Stanly, NC | Pass | State |
| 2023-09-12 | AUTOMATIC ROLLS OF NJ | EDISON, Middlesex, NJ | Pass | State |
| 2023-09-12 | HOPE PUMP STATION | ARTESIA, Chaves, NM | Pass | State |
| 2023-09-12 | WOLVERINE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-12 | WOLVERINE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-12 | WILMA CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2023-09-12 | WILMA CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2023-09-12 | WILMA CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2023-09-12 | WILMA CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2023-09-12 | WILMA CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2023-09-12 | MESA VERDE EAST CGL2 | MALAGA, Lea, NM | Pass | State |
| 2023-09-12 | FIREBIRD LGL STATION | JAL, Lea, NM | Pass | State |
| 2023-09-12 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2023-09-12 | GOLD QUARRY OPERATIONS — high-priority violation on file | CARLIN, Eureka, NV | Pass | State |
| 2023-09-12 | CRAWFORD COMPRESSOR STATION | LANCASTER, Fairfield, OH | Pass | State |
| 2023-09-12 | CRAWFORD COMPRESSOR STATION | LANCASTER, Fairfield, OH | Pass | State |
| 2023-09-12 | CRAWFORD COMPRESSOR STATION | LANCASTER, Fairfield, OH | Pass | State |
| 2023-09-12 | CRAWFORD COMPRESSOR STATION | LANCASTER, Fairfield, OH | Pass | State |
| 2023-09-12 | MAR-ZANE PLANT #26 | COLUMBUS, Franklin, OH | Pass | State |
| 2023-09-12 | EOG RESOURCES, INC. - KENNETH LLOYD 5-14-7 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-09-12 | EOG RESOURCES, INC. - KENNETH LLOYD 5-14-7 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-09-12 | EOG RESOURCES, INC. - KENNETH LLOYD 5-14-7 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-09-12 | ASCENT RESOURCES - UTICA LLC - BORUM SMF JF | SMITHFIELD, TOWNSHIP OF, Jefferson, OH | Pass | State |
| 2023-09-12 | ASCENT RESOURCES - UTICA LLC - BORUM SMF JF | SMITHFIELD, TOWNSHIP OF, Jefferson, OH | Pass | State |
| 2023-09-12 | ASCENT RESOURCES - UTICA LLC - BORUM SMF JF | SMITHFIELD, TOWNSHIP OF, Jefferson, OH | Pass | State |
| 2023-09-12 | ASCENT RESOURCES - UTICA LLC - MINGO CRC JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2023-09-12 | ASCENT RESOURCES - UTICA LLC - MINGO CRC JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2023-09-12 | ASCENT RESOURCES - UTICA LLC - MINGO CRC JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2023-09-12 | INEOS ABS (USA) CORPORATION — high-priority violation on file | ADDYSTON, Hamilton, OH | Pass | State |
| 2023-09-12 | CORRCHOICE, LLC - MASSILLON MILL — high-priority violation on file | MASSILLON, Stark, OH | Pass | State |
| 2023-09-12 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2023-09-12 | MARKWEST OKLAHOMA GAS CO LLC / KINGFISHER COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-09-12 | MARKWEST OKLAHOMA GAS CO LLC / ALPHA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-09-12 | BCE MACH III LLC / LNU 49 4H | DOVER, Kingfisher, OK | Pass | State |
| 2023-09-12 | BCE MACH III LLC / LNU 15 5H 16 3H 16 4H | CRESCENT, Kingfisher, OK | Pass | State |
| 2023-09-12 | ET GATHERING PROCESSING LLC / ELY COMPRESSOR STATION | VELMA, Stephens, OK | Pass | State |
| 2023-09-12 | ET GATHERING PROCESSING LLC / ELY COMPRESSOR STATION | VELMA, Stephens, OK | Pass | State |
| 2023-09-12 | HAMPTON LUMBER MILLS, INC. — high-priority violation on file | WARRENTON, Clatsop, OR | Pass | State |
| 2023-09-12 | SENECA SUSTAINABLE ENERGY | EUGENE, Lane, OR | Pass | Local |
| 2023-09-12 | ATI FLAT ROLLED PRODUCTS HOLDINGS LLC/VANDERGRIFT | VANDERGRIFT, Westmoreland, PA | Pass | State |
| 2023-09-12 | MARKWEST LIBERTY MIDSTREAM & RESOURCES/FULTON BOOSTER STA — high-priority violation on file | HICKORY, Washington, PA | Pass | State |
| 2023-09-12 | ETC NORTHEAST FLD SVC LLC/PIKE COMP STA | ROCHESTER, Beaver, PA | Pass | State |
| 2023-09-12 | COTERRA ENERGY INC/MEAD B PAD 1 — high-priority violation on file | MONTROSE, Susquehanna, PA | Fail | State |
| 2023-09-12 | EXPAND OPERATING LLC/RU-06 FLOHS PAD | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2023-09-12 | LARUE, C PAD 2 — high-priority violation on file | MONTROSE, Susquehanna, PA | Pass | State |
| 2023-09-12 | MANCHESTER STREET, LLC | PROVIDENCE, Providence, RI | Pass | State |
| 2023-09-12 | ASPEN AEROGELS, INC. — high-priority violation on file | EAST PROVIDENCE, Providence, RI | Pass | State |
| 2023-09-12 | SANTEE COOPER CROSS GENERATING STATION — high-priority violation on file | PINEVILLE, Berkeley, SC | Pass | State |
| 2023-09-12 | SANTEE COOPER CROSS GENERATING STATION — high-priority violation on file | PINEVILLE, Berkeley, SC | Pass | State |
| 2023-09-12 | COPE STATION | COPE, Orangeburg, SC | Pass | State |
| 2023-09-12 | HURON ENERGY LLC, DBA GLACIAL LAKES ENERGY LLC — high-priority violation on file | HURON, Beadle, SD | Pass | State |
| 2023-09-12 | BRIDGEPORT PLANT | BRIDGEPORT, Wise, TX | Pass | State |
| 2023-09-12 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2023-09-12 | DAIRYLAND POWER COOP ALMA SITE | ALMA, Buffalo, WI | Pass | State |
| 2023-09-12 | BROWNTOWN FOUNDRY LLC — high-priority violation on file | BROWNTOWN, Green, WI | Pass | State |
| 2023-09-12 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-09-12 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-09-12 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2023-09-12 | FLETCHER/TERHUNE (POWDER RIVER MIDSTREAM, LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2023-09-12 | FLETCHER/TERHUNE (POWDER RIVER MIDSTREAM, LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2023-09-12 | FLETCHER/TERHUNE (POWDER RIVER MIDSTREAM, LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2023-09-12 | CHEYENNE PRAIRIE GENERATING STATION (CHEYENNE LIGHT FUEL & POWER) | CHEYENNE, Laramie, WY | Pass | State |
| 2023-09-12 | CHEYENNE PRAIRIE GENERATING STATION (CHEYENNE LIGHT FUEL & POWER) | CHEYENNE, Laramie, WY | Pass | State |
| 2023-09-12 | CHEYENNE PRAIRIE GENERATING STATION (CHEYENNE LIGHT FUEL & POWER) | CHEYENNE, Laramie, WY | Pass | State |
| 2023-09-11 | INTERNATIONAL PAPER COMPANY — high-priority violation on file | SELMA, Dallas, AL | Pass | State |
| 2023-09-11 | FLYWHEEL ENERGY COMPANY - PUMA NORTH CPF-1 | WILBURN, Cleburne, AR | Pass | State |
| 2023-09-11 | FLYWHEEL ENERGY COMPANY - PUMA NORTH CPF-1 | WILBURN, Cleburne, AR | Pass | State |
| 2023-09-11 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Fail | State |
| 2023-09-11 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-11 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-11 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-11 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-11 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-11 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-11 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-11 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2023-09-11 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2023-09-11 | HILMAR CHEESE COMPANY — high-priority violation on file | HILMAR, Merced, CA | Pass | Local |
| 2023-09-11 | PDC ENERGY - EVANS 7-26 PAD | EVANS, Weld, CO | Fail | State |
| 2023-09-11 | DUNAMIS ENERGY - ALBERTA CITIES EAST PAD | SEVERANCE 3.7 MI. N OF, Weld, CO | Pass | State |
| 2023-09-11 | WALLINGFORD ENERGY, LLC | WALLINGFORD, New Haven, CT | Pass | State |
| 2023-09-11 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2023-09-11 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2023-09-11 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2023-09-11 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2023-09-11 | RAYONIER PERFORMANCE FIBERS, LLC | JESUP, Wayne, GA | Pass | State |
| 2023-09-11 | SOUTHERN ILLINOIS POWER COOP | MARION, Williamson, IL | Pass | State |
| 2023-09-11 | CITY OF WAMEGO PUBLIC WORKS (AIR CURT COMB)(AIR) | WAMEGO, Pottawatomie, KS | Pass | State |
| 2023-09-11 | CENTRAL SANITARY LANDFILL | PIERSON, Montcalm, MI | Pass | State |
| 2023-09-11 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-11 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.