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 |
|---|---|---|---|---|
| 2021-11-23 | NIPPON DYNAWAVE PACKAGING COMPANY LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2021-11-23 | AIR LIQUIDE AMERICA LP | ANACORTES, Skagit, WA | Pass | Local |
| 2021-11-23 | LYNNWOOD, CITY OF, WASTEWATER TREATMENT FACILITY | EDMONDS, Snohomish, WA | Fail | U.S. EPA |
| 2021-11-23 | COLUMBIA GAS TRANSMISSION, LLC, CEREDO | HUNTINGTON, Wayne, WV | Pass | State |
| 2021-11-22 | COFFEE LANDFILL | ELBA, Coffee, AL | Pass | State |
| 2021-11-22 | W&T OFFSHORE, INC. | MOBILE BAY, Mobile, AL | Pass | State |
| 2021-11-22 | SALINAS VALLEY SOLID WASTE AUTHORITY | GONZALES, Monterey, CA | Pass | Local |
| 2021-11-22 | USDA-NATIONAL ANIMAL DISEASE CENTER & NATIONAL VETERINARY SERVICE LABORATORY | AMES, Story, IA | Pass | State |
| 2021-11-22 | USDA-NATIONAL ANIMAL DISEASE CENTER & NATIONAL VETERINARY SERVICE LABORATORY | AMES, Story, IA | Pass | State |
| 2021-11-22 | INDUSTRIAL STEEL CONSTRUCTION INC | GARY, Lake, IN | Pass | State |
| 2021-11-22 | INDUSTRIAL STEEL CONSTRUCTION INC | GARY, Lake, IN | Pass | State |
| 2021-11-22 | INDUSTRIAL STEEL CONSTRUCTION INC | GARY, Lake, IN | Pass | State |
| 2021-11-22 | INDUSTRIAL STEEL CONSTRUCTION INC | GARY, Lake, IN | Pass | State |
| 2021-11-22 | GLOBE INDUSTRIAL LLC/ GLOBE INDUSTRIES LLC | PEKIN, Washington, IN | Pass | State |
| 2021-11-22 | GLOBE INDUSTRIAL LLC/ GLOBE INDUSTRIES LLC | PEKIN, Washington, IN | Pass | State |
| 2021-11-22 | GLOBE INDUSTRIAL LLC/ GLOBE INDUSTRIES LLC | PEKIN, Washington, IN | Pass | State |
| 2021-11-22 | GLOBE INDUSTRIAL LLC/ GLOBE INDUSTRIES LLC | PEKIN, Washington, IN | Pass | State |
| 2021-11-22 | APAC-KANSAS CITY SHEARS DIV (MASTER EQUIP LIST)(AIR) | LINCOLN, Lincoln, KS | Pass | State |
| 2021-11-22 | SUPERIOR GRAPHITE | HOPKINSVILLE, Christian, KY | Pass | State |
| 2021-11-22 | ROCKWOOD FARM ORGANIC RECYCLERY | GRANVILLE, Hampden, MA | Pass | State |
| 2021-11-22 | DENSO MANUFACTURING MICHIGAN, INC. | BATTLE CREEK, Calhoun, MI | Pending | State |
| 2021-11-22 | MINNESOTA POWER - BOSWELL ENERGY CENTER | COHASSET, Itasca, MN | Pass | State |
| 2021-11-22 | WM D SCEPANIAK INC | HOLDINGFORD, Stearns, MN | Pass | State |
| 2021-11-22 | OWENS-CORNING STATELINE | JOPLIN, Jasper, MO | Fail | State |
| 2021-11-22 | RIVER CEMENT CO. DBA BUZZI UNICEM USA SELMA PLANT | FESTUS, Jefferson, MO | Pass | State |
| 2021-11-22 | GCF US HOLDINGS, LLC - COLUMBUS MILL — high-priority violation on file | COLUMBUS, Lowndes, MS | Pass | State |
| 2021-11-22 | MONTANA SULPHUR & CHEMICAL | BILLINGS, Yellowstone, MT | Pass | State |
| 2021-11-22 | MONTANA SULPHUR & CHEMICAL | BILLINGS, Yellowstone, MT | Pass | State |
| 2021-11-22 | OPPD NEBRASKA CITY STATION | NEBRASKA CITY, Otoe, NE | Pass | State |
| 2021-11-22 | MAGNUM COMPRESSOR STATION — high-priority violation on file | CARLSBAD, Eddy, NM | Pass | State |
| 2021-11-22 | AVALON COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-11-22 | AVALON COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-11-22 | VALIDUS ENERGY II MIDCON LLC / GARY BORDEN 1 28H | TALOGA, Dewey, OK | Pass | State |
| 2021-11-22 | UNBRIDLED RESOURCES LLC / PARKER RED BLUFF 11 18 25 WELL PAD | ARNETT, Ellis, OK | Pass | State |
| 2021-11-22 | UNBRIDLED RESOURCES LLC / WAYLAND 18X7 18 25 1HC 2HD | ARNETT, Ellis, OK | Pass | State |
| 2021-11-22 | GULFPORT MIDCON LLC / PARKS 3 4 14X23H | ERIN SPRINGS, Grady, OK | Pass | State |
| 2021-11-22 | EOG RESOURCES INC / WILSON CTB PRODUCTION FACILITY | BLANCHARD, McClain, OK | Pass | State |
| 2021-11-22 | EOG RESOURCES INC / DOROTHY COMPRESSOR STATION | BLANCHARD, McClain, OK | Pass | State |
| 2021-11-22 | GREYLOCK MIDSTREAM LLC/KUHL-SKIB COMP STA | JEFFERSON, Greene, PA | Pass | State |
| 2021-11-22 | GREYLOCK MIDSTREAM LLC/KUHL-SKIB COMP STA | JEFFERSON, Greene, PA | Pass | State |
| 2021-11-22 | AMRIZE CEMENT INC. - HOLLY HILL PLANT | HOLLY HILL, Orangeburg, SC | Pass | State |
| 2021-11-22 | MOUNTAIN STATE CLEAN ENERGY, LLC, MAIDSVILLE | MAIDSVILLE, Monongalia, WV | Pass | State |
| 2021-11-21 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-11-21 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-11-21 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-11-21 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-11-21 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2021-11-21 | CITY OF SHENANDOAH-SHENANDOAH SANITATION — high-priority violation on file | SHENANDOAH, Page, IA | Pass | State |
| 2021-11-21 | AMERICAN CRYSTAL SUGAR - MOORHEAD — high-priority violation on file | MOORHEAD, Clay, MN | Pass | State |
| 2021-11-20 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-20 | ET GATHERING PROCESSING LLC / REDHORSE COMPRESSOR STATION | ALVA, Woods, OK | Pass | State |
| 2021-11-19 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Pass | State |
| 2021-11-19 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-19 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-19 | DCP OPERATING CO - LIBSACK C.S. | GREELEY AREA, Weld, CO | Pass | State |
| 2021-11-19 | BIOCHAR NOW, LLC - BERTHOUD PLANT | BERTHOUD, Weld, CO | Pass | State |
| 2021-11-19 | EAST SHORE WATER POLL ABATEMENT FACILITY | NEW HAVEN, New Haven, CT | Pass | State |
| 2021-11-19 | GOLD BOND BUILDING PRODUCTS, LLC | GIBSONTON, Hillsborough, FL | Pass | State |
| 2021-11-19 | LAURENS COUNTY OLD MACON ROAD LANDFILL | DUBLIN, Laurens, GA | Pass | State |
| 2021-11-19 | ADM QUINCY — high-priority violation on file | QUINCY, Adams, IL | Pass | State |
| 2021-11-19 | HEIDELBERG MATERIALS US CEMENT LLC | LOGANSPORT, Cass, IN | Pass | State |
| 2021-11-19 | RAYBESTOS POWERTRAIN LLC — high-priority violation on file | CRAWFORDSVILLE, Montgomery, IN | Pass | State |
| 2021-11-19 | CLEVELAND-CLIFFS BURNS HARBOR LLC — high-priority violation on file | BURNS HARBOR, Porter, IN | Pass | State |
| 2021-11-19 | CLEVELAND-CLIFFS BURNS HARBOR LLC — high-priority violation on file | BURNS HARBOR, Porter, IN | Pass | State |
| 2021-11-19 | HARSHMAN CONST (MASTER EQUIP LIST) (AIR) | CEDAR POINT, Marion, KS | Pass | State |
| 2021-11-19 | RIVER BIRCH LLC - RIVER BIRCH LANDFILL | AVONDALE, Jefferson, LA | Fail | State |
| 2021-11-19 | SAPPI CLOQUET LLC | CLOQUET, Carlton, MN | Pass | State |
| 2021-11-19 | ASCENT RESOURCES-UTICA, LLC - BROWN WSG GR | KIMBOLTON, Guernsey, OH | Pass | State |
| 2021-11-19 | ASCENT RESOURCES-UTICA, LLC - BROWN WSG GR | KIMBOLTON, Guernsey, OH | Pass | State |
| 2021-11-19 | ASCENT RESOURCES-UTICA, LLC - BROWN WSG GR | KIMBOLTON, Guernsey, OH | Pass | State |
| 2021-11-19 | BLUE RACER MIDSTREAM LLC - NOBLE CO FIELD STATION #2 | SUMMERFIELD, Noble, OH | Pass | State |
| 2021-11-19 | BLUE RACER MIDSTREAM LLC - NOBLE CO FIELD STATION #2 | SUMMERFIELD, Noble, OH | Pass | State |
| 2021-11-19 | BLUE RACER MIDSTREAM LLC - NOBLE CO FIELD STATION #2 | SUMMERFIELD, Noble, OH | Pass | State |
| 2021-11-19 | H.B. FULLER CO. | BLUE ASH, Hamilton, OH | Pass | State |
| 2021-11-19 | H.B. FULLER CO. | BLUE ASH, Hamilton, OH | Pass | State |
| 2021-11-19 | PA STATE UNIV/UNIV PARK CAMPUS | UNIVERSITY PARK, Centre, PA | Pass | State |
| 2021-11-19 | RHODE ISLAND HOSPITAL | PROVIDENCE, Providence, RI | Pass | State |
| 2021-11-18 | SOUTHERN NATURAL GAS | HEFLIN, Cleburne, AL | Pass | State |
| 2021-11-18 | SOUTHERN NATURAL GAS | HEFLIN, Cleburne, AL | Pass | State |
| 2021-11-18 | 3M COMPANY — high-priority violation on file | GUIN, Marion, AL | Pass | State |
| 2021-11-18 | EVONIK CORPORATION | THEODORE, Mobile, AL | Pass | State |
| 2021-11-18 | JOHNS MANVILLE INC. | PHENIX CITY, Russell, AL | Pass | State |
| 2021-11-18 | HUNT REFINING COMPANY | TUSCALOOSA, Tuscaloosa, AL | Pass | State |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
| 2021-11-18 | ALOGONQUIN POWER SANGER LLC — high-priority violation on file | SANGER, Fresno, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.