EPA Air · stack tests by year
Air-emissions stack tests in 2021
- 35,950Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2021
- California 17,676
- Ohio 2,582
- Florida 1,540
- Indiana 1,495
- Oklahoma 1,318
- Georgia 1,189
- New Mexico 841
- Pennsylvania 788
- Alabama 621
- Mississippi 589
- Texas 574
- Arkansas 518
- Missouri 515
- Colorado 407
- Iowa 368
- Washington 334
- North Carolina 273
- Michigan 256
- Wisconsin 239
- Wyoming 235
- West Virginia 225
- Kentucky 222
- Delaware 222
- Montana 220
- South Carolina 217
- Minnesota 209
- Kansas 177
- Alaska 143
- Illinois 142
- Utah 140
- Nevada 136
- Virginia 131
- Nebraska 117
- Maine 110
- New Jersey 110
- New York 103
- Connecticut 99
- Tennessee 98
- North Dakota 93
- Arizona 93
- Idaho 90
- Louisiana 69
- Hawaii 64
- Maryland 56
- South Dakota 55
- District of Columbia 54
- New Hampshire 53
- Oregon 45
- Rhode Island 34
- Massachusetts 29
- Puerto Rico 19
- Vermont 17
Other years
Air-emissions stack tests recorded in 2021
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Pass | Local |
| 2021-12-16 | CITY OF GAINESVILLE (GRU) | GAINESVILLE, Alachua, FL | Pass | State |
| 2021-12-16 | CITY OF GAINESVILLE (GRU) | GAINESVILLE, Alachua, FL | Pass | State |
| 2021-12-16 | CITY OF GAINESVILLE (GRU) | GAINESVILLE, Alachua, FL | Pass | State |
| 2021-12-16 | CITY OF GAINESVILLE, GRU — high-priority violation on file | GAINESVILLE, Alachua, FL | Pass | State |
| 2021-12-16 | CITY OF GAINESVILLE, GRU — high-priority violation on file | GAINESVILLE, Alachua, FL | Pass | State |
| 2021-12-16 | CITY OF GAINESVILLE, GRU — high-priority violation on file | GAINESVILLE, Alachua, FL | Pass | State |
| 2021-12-16 | CITY OF GAINESVILLE, GRU — high-priority violation on file | GAINESVILLE, Alachua, FL | Pass | State |
| 2021-12-16 | FLORIDA POWER & LIGHT COMPANY | PACE, Santa Rosa, FL | Pass | State |
| 2021-12-16 | TELEFLEX MEDICAL OEM LLC PKA IWG HPC INC. | TRENTON, Dade, GA | Pass | State |
| 2021-12-16 | CHEMENCE MEDICAL | ALPHARETTA, Forsyth, GA | Pass | State |
| 2021-12-16 | ANCHOR GLASS CONTAINER CORPORATION - WARNER ROBINS PLANT — high-priority violation on file | WARNER ROBINS, Houston, GA | Pass | State |
| 2021-12-16 | ANCHOR GLASS CONTAINER CORPORATION - WARNER ROBINS PLANT — high-priority violation on file | WARNER ROBINS, Houston, GA | Pass | State |
| 2021-12-16 | ANCHOR GLASS CONTAINER CORPORATION - WARNER ROBINS PLANT — high-priority violation on file | WARNER ROBINS, Houston, GA | Pass | State |
| 2021-12-16 | ANCHOR GLASS CONTAINER CORPORATION - WARNER ROBINS PLANT — high-priority violation on file | WARNER ROBINS, Houston, GA | Pass | State |
| 2021-12-16 | ANCHOR GLASS CONTAINER CORPORATION - WARNER ROBINS PLANT — high-priority violation on file | WARNER ROBINS, Houston, GA | Pass | State |
| 2021-12-16 | THOMPSON HARDWOODS, INC. | HAZLEHURST, Jeff Davis, GA | Pass | State |
| 2021-12-16 | ATLANTIC POLE - GEORGIA, LLC | VIDALIA, Toombs, GA | Pass | State |
| 2021-12-16 | BROADHURST ENVIRONMENTAL LANDFILL | SCREVEN, Wayne, GA | Pass | State |
| 2021-12-16 | ID CASTINGS OF ILLINOIS LLC — high-priority violation on file | MARTINSVILLE, Clark, IL | Pass | State |
| 2021-12-16 | ESSEX SOLUTIONS USA LLC | FRANKLIN, Johnson, IN | Pass | State |
| 2021-12-16 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2021-12-16 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2021-12-16 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2021-12-16 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2021-12-16 | SABINE PASS LNG LP AND SABINE PASS LIQUEFACTION LLC - SABINE PASS LNG TERMINAL | CAMERON, Cameron, LA | Pass | State |
| 2021-12-16 | AMRIZE — high-priority violation on file | HAGERSTOWN, Washington, MD | Pass | State |
| 2021-12-16 | AMERICAN SUGAR REFINING | BALTIMORE, Baltimore (city), MD | Pass | State |
| 2021-12-16 | MUELLER BRASS COMPANY | PORT HURON, St. Clair, MI | Pass | State |
| 2021-12-16 | FCA US LLC WARREN TRUCK ASSEMBLY PLANT — high-priority violation on file | WARREN, Macomb, MI | Pending | State |
| 2021-12-16 | FCA US LLC - DETROIT ASSEMBLY COMPLEX — high-priority violation on file | DETROIT, Wayne, MI | Pending | State |
| 2021-12-16 | HOWELL COMPRESSOR STATION | HOWELL, Livingston, MI | Pass | State |
| 2021-12-16 | NEW MADRID POWER PLANT-ASSOC ELEC COOP | MARSTON, New Madrid, MO | Pass | State |
| 2021-12-16 | NEW MADRID POWER PLANT-ASSOC ELEC COOP | MARSTON, New Madrid, MO | Pending | State |
| 2021-12-16 | CENTERSTREAM STL LLC | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2021-12-16 | CENTERSTREAM STL LLC | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2021-12-16 | CENTERSTREAM STL LLC | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2021-12-16 | CENTERSTREAM STL LLC | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2021-12-16 | CENTERSTREAM STL LLC | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2021-12-16 | CENTERSTREAM STL LLC | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2021-12-16 | CENTERSTREAM STL LLC | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2021-12-16 | CHEMOURS COMPANY - FAYETTEVILLE WORKS | FAYETTEVILLE, Bladen, NC | Pending | State |
| 2021-12-16 | VALERO RENEWABLE FUELS COMPANY — high-priority violation on file | ALBION, Boone, NE | N/A | State |
| 2021-12-16 | NPPD SHELDON STATION | HALLAM, Lancaster, NE | Pass | Local |
| 2021-12-16 | ACM ENERGY PARTNERS LLC (FKA: THERMAL ENERGY - MIDTWN THRML CNTRL CTR) | ATLANTIC CITY, Atlantic, NJ | Pass | State |
| 2021-12-16 | WHITE CITY 8 FEDERAL 2H-5H | WHITES CITY, Eddy, NM | Pass | State |
| 2021-12-16 | FADEAWAY RIDGE COMPRESSOR STATION | ARTESIA, Eddy, NM | Pass | State |
| 2021-12-16 | LIMA REFINING COMPANY — high-priority violation on file | LIMA, Allen, OH | Pass | State |
| 2021-12-16 | ASCENT RESOURCES - UTICA LLC - PORTERFIELD WELL PAD | WASHINGTON, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2021-12-16 | ASCENT RESOURCES - UTICA LLC - PORTERFIELD WELL PAD | WASHINGTON, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2021-12-16 | ASCENT RESOURCES - UTICA LLC - PORTERFIELD WELL PAD | WASHINGTON, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2021-12-16 | OWENS CORNING ROOFING AND ASPHALT, LLC | MEDINA, Medina, OH | Pass | State |
| 2021-12-16 | MARKWEST PIONEER LLC / ARKOMA COMPRESSOR STATION | COALGATE, Coal, OK | Pass | State |
| 2021-12-16 | MARKWEST PIONEER LLC / ARKOMA COMPRESSOR STATION | COALGATE, Coal, OK | Pass | State |
| 2021-12-16 | MARKWEST OKLAHOMA GAS CO LLC / WOMACK COMPRESSOR STATION | COALGATE, Coal, OK | Pass | State |
| 2021-12-16 | GREATER HAZLETON JT SEW AUTH/WEST HAZLETON STP — high-priority violation on file | WEST HAZLETON, Luzerne, PA | Pass | State |
| 2021-12-16 | BEFESA ZINC US INC./PALMERTON — high-priority violation on file | PALMERTON, Carbon, PA | Pending | State |
| 2021-12-16 | PANTHER CREEK POWER OPR LLC/NESQUEHONING | NESQUEHONING, Carbon, PA | Pass | State |
| 2021-12-16 | EXPAND OPERATING LLC/FERRARO WELL PAD | NEW ALBANY, Bradford, PA | Pass | State |
| 2021-12-16 | ULMER BROTHERS | BLUFFTON, Beaufort, SC | Pass | State |
| 2021-12-16 | TENNESSEE OPERATIONS OF EASTMAN CHEMICAL COMPANY — high-priority violation on file | KINGSPORT, Sullivan, TN | Pass | State |
| 2021-12-16 | AMAZON DATA SERVICES - DCA-51 | WARRENTON, Fauquier, VA | Fail | State |
| 2021-12-16 | GLOBALFOUNDRIES US 2 LLC | ESSEX, Chittenden, VT | Pass | State |
| 2021-12-16 | ETHAN ALLEN OPERATIONS INC (BEECHER FALLS) | CANAAN, Essex, VT | Pass | State |
| 2021-12-16 | LANXESS CORPORATION — high-priority violation on file | KALAMA, Cowlitz, WA | Pass | Local |
| 2021-12-16 | GRAYMONT WESTERN LIME - EDEN | EDEN, Fond du Lac, WI | Pass | State |
| 2021-12-16 | GUNDERSEN HEALTH SYSTEM | LA CROSSE, La Crosse, WI | Pass | State |
| 2021-12-16 | HILIGHT GAS PLANT (WES POWDER RIVER HOLDINGS LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2021-12-16 | BEAVER CREEK COMPRESSOR STATION (DENBURY ONSHORE, LLC) | RIVERTON, Fremont, WY | Pass | State |
| 2021-12-15 | CRESTWOOD STATION 5 | NORTH DAKOTA, Undetermined, ND | Pass | U.S. EPA |
| 2021-12-15 | CRESTWOOD STATION 1 | NORTH DAKOTA, Undetermined, ND | Pass | U.S. EPA |
| 2021-12-15 | MICHELIN TIRE CORPORATION | MIDLAND CITY, Dale, AL | Pass | State |
| 2021-12-15 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | SWEET WATER, Marengo, AL | Pass | State |
| 2021-12-15 | ALABAMA POWER COMPANY | BUCKS, Mobile, AL | Pass | State |
| 2021-12-15 | ALABAMA POWER COMPANY | BUCKS, Mobile, AL | Pass | State |
| 2021-12-15 | HYUNDAI MOTOR MANUFACTURING ALABAMA LLC. | MONTGOMERY, Montgomery, AL | Pass | State |
| 2021-12-15 | BAKELITE CHEMICALS LLC. | CROSSETT, Ashley, AR | Pass | State |
| 2021-12-15 | ALBEMARLE CORPORATION-SOUTH PLANT | MAGNOLIA, Columbia, AR | Pass | State |
| 2021-12-15 | ALBEMARLE CORPORATION-SOUTH PLANT | MAGNOLIA, Columbia, AR | Pass | State |
| 2021-12-15 | ROGERS GROUP, INC. - CABOT ASPHALT | CABOT, Lonoke, AR | Pass | State |
| 2021-12-15 | PROCTER & GAMBLE | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2021-12-15 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-15 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-15 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-15 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2021-12-15 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in 2021. It lists 35,950 stack tests recorded nationwide in 2021.