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 |
|---|---|---|---|---|
| 2021-10-06 | ASCENT RESOURCES - UTICA LLC - OLIVER CLR BL | MARTINS FERRY, Belmont, OH | Pass | State |
| 2021-10-06 | ASCENT RESOURCES - UTICA LLC - OLIVER CLR BL | MARTINS FERRY, Belmont, OH | Pass | State |
| 2021-10-06 | ASCENT RESOURCES - UTICA LLC - POL PES BL | PEASE, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2021-10-06 | ASCENT RESOURCES - UTICA LLC - POL PES BL | PEASE, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2021-10-06 | ASCENT RESOURCES - UTICA LLC - POL PES BL | PEASE, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2021-10-06 | BROWN COUNTY ASPHALT | GEORGETOWN, Brown, OH | Pass | State |
| 2021-10-06 | ONEOK FIELD SERVICES CO LLC / WARD COMPRESSOR STATION NORTHERN ROWS | GEARY, Canadian, OK | Pass | State |
| 2021-10-06 | ONEOK FIELD SERVICES CO LLC / WARD COMPRESSOR STATION NORTHERN ROWS | GEARY, Canadian, OK | Pass | State |
| 2021-10-06 | TALL OAK WOODFORD LLC / PANTHER CREEK PROCESSING FACILITY | COALGATE, Coal, OK | Pass | State |
| 2021-10-06 | ET GATHERING PROCESSING LLC / WEATHERFORD COMPRESSOR STATION | WEATHERFORD, Custer, OK | Pass | State |
| 2021-10-06 | FORESTER MIDSTREAM LLC / ALEDO TAYLOR AMINE PLANT | ALEDO, Dewey, OK | Pass | State |
| 2021-10-06 | BCE MACH III MIDSTREAM HOLDINGS LLC / SOUTH OF LINCOLN COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-10-06 | BCE MACH III MIDSTREAM HOLDINGS LLC / SOUTH OF LINCOLN COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-10-06 | BCE MACH III MIDSTREAM HOLDINGS LLC / WAY SOUTH COMPRESSOR STATION | CASHION, Kingfisher, OK | Pass | State |
| 2021-10-06 | TERRA NITROGEN LP / VERDIGRIS PLANT | CLAREMORE, Rogers, OK | Pass | State |
| 2021-10-06 | ELLWOOD QUALITY STEELS CO/NEW CASTLE PLT | NEW CASTLE, Lawrence, PA | Pass | State |
| 2021-10-06 | DONSCO INC/WRIGHTSVILLE | WRIGHTSVILLE, York, PA | Pass | State |
| 2021-10-06 | CNX MIDSTREAM OPR CO LLC/NV-57 COMP STA | PROSPERITY, Washington, PA | Pass | State |
| 2021-10-06 | PROVIDENCE COLLEGE — high-priority violation on file | PROVIDENCE, Providence, RI | Fail | State |
| 2021-10-06 | NORTHWESTERN ENERGY PUBLIC SERVICE CORPORATION - ABERDEEN | ABERDEEN, Brown, SD | Pass | State |
| 2021-10-06 | SI NVA01 ABS, LLC | STERLING, Loudoun, VA | Pass | State |
| 2021-10-06 | DIGITAL REALTY (DIGITAL LOUDOUN 3 & 4, LLC) | ASHBURN, Loudoun, VA | Pass | State |
| 2021-10-06 | AMAZON DATA SERVICES, INC. IAD-140/141/143 | STERLING, Loudoun, VA | Pass | State |
| 2021-10-06 | BP WEST COAST PRODUCTS LLC — high-priority violation on file | BLAINE, Whatcom, WA | Pass | Local |
| 2021-10-06 | NORTH PACIFIC PAPER CORP. — high-priority violation on file | LONGVIEW, Cowlitz, WA | Fail | Local |
| 2021-10-06 | APPALACHIA MIDSTREAM SERVICES, L.L.C., THREEDUBS STATION | WELLSBURG, Brooke, WV | Pass | State |
| 2021-10-06 | KENTUCKY POWER COMPANY, MITCHELL PLANT | MOUNDSVILLE, Marshall, WV | Pass | State |
| 2021-10-06 | LOVELL GRINDING PLANT (BENTONITE PERFORMANCE MINERALS) | LOVELL, Big Horn, WY | Pass | State |
| 2021-10-06 | CHEYENNE PLANT (DYNO NOBEL INC) — high-priority violation on file | CHEYENNE, Laramie, WY | Pass | State |
| 2021-10-06 | GRANGER SODA ASH FACILITY (WE SODA WYOMING LP) | GRANGER, Sweetwater, WY | Pass | State |
| 2021-10-05 | CRESTWOOD CORPORATION | DOTHAN, Houston, AL | Pass | State |
| 2021-10-05 | FREEBIRD GAS STORAGE | DETROIT, Lamar, AL | Pass | State |
| 2021-10-05 | FREEBIRD GAS STORAGE | DETROIT, Lamar, AL | Pass | State |
| 2021-10-05 | DESOTO GATHERING COMPANY, LLC - SOUTH RAINBOW CPF-4 | CENTER RIDGE, Conway, AR | Pass | State |
| 2021-10-05 | ENABLE GAS TRANSMISSION, LLC (HELENA COMPRESSOR STATION) | HELENA, Phillips, AR | Pass | State |
| 2021-10-05 | DESOTO GATHERING COMPANY, LLC - YELLOWSTONE CPF-3 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2021-10-05 | IMPERIAL IRRIGATION DISTRICT/COACHELLA | COACHELLA, Riverside, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | OLAM WEST COAST INC | FIREBAUGH, Fresno, CA | Pass | Local |
| 2021-10-05 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-05 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-05 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-05 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-05 | CONSERVATION SERVICES INC | AURORA 3.9 MI. NE OF, Adams, CO | Pass | State |
| 2021-10-05 | QB ENERGY OPERATING - CDP K22 496 | PARACHUTE 16.4 MI. N OF, Garfield, CO | Pass | State |
| 2021-10-05 | QB ENERGY OPERATING - CDP K22 496 | PARACHUTE 16.4 MI. N OF, Garfield, CO | Pass | State |
| 2021-10-05 | GRAND RIVER GATHERING, LLC- HIGH MESA CS | PARACHUTE 2.5 MI. S OF, Garfield, CO | Pass | State |
| 2021-10-05 | OLEANDER POWER PROJECT, LP | COCOA, Brevard, FL | Pass | State |
| 2021-10-05 | OLEANDER POWER PROJECT, LP | COCOA, Brevard, FL | Pass | State |
| 2021-10-05 | MIAMI-DADE WATER AND SEWER DEPARTMENT | MIAMI, Miami-Dade, FL | Pass | State |
| 2021-10-05 | MIAMI-DADE WATER AND SEWER DEPARTMENT | MIAMI, Miami-Dade, FL | Pass | State |
| 2021-10-05 | MOSAIC FERTILIZER, LLC | RIVERVIEW, Hillsborough, FL | Pass | State |
| 2021-10-05 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-05 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-05 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-05 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-05 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-05 | CITY OF TAMPA | TAMPA, Hillsborough, FL | Pass | State |
| 2021-10-05 | DART CONTAINER CORPORATION OF FLORIDA | PLANT CITY, Hillsborough, FL | Pass | State |
| 2021-10-05 | SEMINOLE ELECTRIC COOPERATIVE, INC. | PALATKA, Putnam, FL | Pass | State |
| 2021-10-05 | SEMINOLE ELECTRIC COOPERATIVE, INC. | PALATKA, Putnam, FL | Pass | State |
| 2021-10-05 | SOUTHERN NATURAL GAS CO., L.L.C - HALL GATE COMP. STATION | MILLEDGEVILLE, Baldwin, GA | Pass | State |
| 2021-10-05 | GRAPHIC PACKAGING INTERNATIONAL, LLC - MACON MILL | MACON, Bibb, GA | Pass | State |
| 2021-10-05 | UNITED STATES SUGAR SAVANNAH REFINERY — high-priority violation on file | PORT WENTWORTH, Chatham, GA | Pass | State |
| 2021-10-05 | UNITED STATES SUGAR SAVANNAH REFINERY — high-priority violation on file | PORT WENTWORTH, Chatham, GA | Pass | State |
| 2021-10-05 | UNITED STATES SUGAR SAVANNAH REFINERY — high-priority violation on file | PORT WENTWORTH, Chatham, GA | Pass | State |
| 2021-10-05 | UNITED STATES SUGAR SAVANNAH REFINERY — high-priority violation on file | PORT WENTWORTH, Chatham, GA | Pass | State |
| 2021-10-05 | INTERNATIONAL PAPER COMPANY - ROME MILL | ROME, Floyd, GA | Pass | State |
| 2021-10-05 | INTERNATIONAL PAPER COMPANY - ROME MILL | ROME, Floyd, GA | Pass | State |
| 2021-10-05 | IDAHO FOREST GROUP - LACLEDE | LACLEDE, Bonner, ID | Pass | State |
| 2021-10-05 | LIBERTY BASIN LLC | BURLEY, Cassia, ID | Fail | State |
| 2021-10-05 | AMSTED RAIL CO INC | GRANITE CITY, Madison, IL | Pass | State |
| 2021-10-05 | MILAM RECYCLING AND DISPOSAL FACILITY | FAIRMONT CITY, St. Clair, IL | Pass | State |
| 2021-10-05 | GRAIN PROCESSING CORPORATION — high-priority violation on file | WASHINGTON, Daviess, IN | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.