EPA Air · stack tests by year
Air-emissions stack tests in 2020
- 33,437Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2020
- California 15,352
- Ohio 2,194
- Florida 1,532
- Oklahoma 1,517
- Indiana 1,473
- Georgia 1,147
- New Mexico 846
- Pennsylvania 725
- Alabama 674
- Texas 617
- Missouri 607
- Arkansas 589
- Mississippi 438
- Colorado 429
- Washington 407
- Iowa 355
- North Carolina 274
- Wyoming 235
- Wisconsin 229
- Michigan 222
- South Carolina 221
- Montana 217
- Minnesota 213
- Delaware 211
- Kentucky 184
- West Virginia 175
- Utah 158
- Tennessee 149
- Kansas 144
- Nebraska 142
- Alaska 141
- Maine 136
- Nevada 134
- Virginia 132
- Illinois 129
- North Dakota 129
- New Jersey 122
- Connecticut 110
- Arizona 97
- New York 93
- Hawaii 84
- Louisiana 83
- Idaho 81
- New Hampshire 72
- Maryland 46
- South Dakota 46
- Oregon 39
- Rhode Island 30
- District of Columbia 30
- Vermont 17
- Massachusetts 7
- Puerto Rico 3
Other years
Air-emissions stack tests recorded in 2020
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2020-10-09 | TOPOCK LNG PLANT 1 COOLING WATER BLOWDOWN POND | TOPOCK, Mohave, AZ | Pass | State |
| 2020-10-09 | TESORO REFINING & MARKETING CO, LLC — high-priority violation on file | CARSON, Los Angeles, CA | Pass | Local |
| 2020-10-09 | WEBER METALS INC | PARAMOUNT, Los Angeles, CA | Pass | Local |
| 2020-10-09 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-09 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-09 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-09 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-09 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-09 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-09 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-09 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-09 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2020-10-09 | MECO - PALAAU | PALAAU, Maui, HI | Pass | State |
| 2020-10-09 | AEROFAB DIVISION OF TUBE PROCESSING CORP | INDIANAPOLIS, Marion, IN | Pass | State |
| 2020-10-09 | AEROFAB DIVISION OF TUBE PROCESSING CORP | INDIANAPOLIS, Marion, IN | Pass | State |
| 2020-10-09 | AEROFAB DIVISION OF TUBE PROCESSING CORP | INDIANAPOLIS, Marion, IN | Pass | State |
| 2020-10-09 | AEROFAB DIVISION OF TUBE PROCESSING CORP | INDIANAPOLIS, Marion, IN | Pass | State |
| 2020-10-09 | AEROFAB DIVISION OF TUBE PROCESSING CORP | INDIANAPOLIS, Marion, IN | Pass | State |
| 2020-10-09 | AEROFAB DIVISION OF TUBE PROCESSING CORP | INDIANAPOLIS, Marion, IN | Pass | State |
| 2020-10-09 | AEROFAB DIVISION OF TUBE PROCESSING CORP | INDIANAPOLIS, Marion, IN | Pass | State |
| 2020-10-09 | AEROFAB DIVISION OF TUBE PROCESSING CORP | INDIANAPOLIS, Marion, IN | Pass | State |
| 2020-10-09 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2020-10-09 | VALERO RENEWABLE FUELS COMPANY DBA VALERO LINDEN PLANT | LINDEN, Montgomery, IN | Pass | State |
| 2020-10-09 | TOYOTA MOTOR NORTH AMERICA R&D | ANN ARBOR, Washtenaw, MI | Pass | State |
| 2020-10-09 | LINCOLN PREMIUM POULTRY LLC — high-priority violation on file | FREMONT, Dodge, NE | Fail | State |
| 2020-10-09 | LONGHORN COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2020-10-09 | CLARK PLANT | MCCARRAN, Storey, NV | Pass | State |
| 2020-10-09 | GEORGIA PACIFIC GYPSUM, LLC | LAS VEGAS, Clark, NV | Pass | Local |
| 2020-10-09 | ONEOK FIELD SERVICES CO LLC / BURNS COMPRESSOR STATION | GEARY, Canadian, OK | Pass | State |
| 2020-10-09 | ONEOK FIELD SERVICES CO LLC / WARD COMPRESSOR STATION NORTHERN ROWS | GEARY, Canadian, OK | Pass | State |
| 2020-10-09 | MARKWEST OKLAHOMA GAS CO LLC / LOYAL COMPRESSOR STATION | LOYAL, Kingfisher, OK | Pass | State |
| 2020-10-09 | MARKWEST OKLAHOMA GAS CO LLC / DOVER COMPRESSOR STATION | DOVER, Kingfisher, OK | Pass | State |
| 2020-10-09 | MARKWEST OKLAHOMA GAS CO LLC / STANGL COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2020-10-09 | MARKWEST LIBERTY MIDSTREAM/SMITH COMP STA | BURGETTSTOWN, Washington, PA | Pass | State |
| 2020-10-09 | MTN GATHERING LLC/FORWARD COMP STA | RENFREW, Butler, PA | Pass | State |
| 2020-10-09 | CNX MIDSTREAM OPR CO LLC /MORRIS DEHY STATION | GRAYSVILLE, Greene, PA | Pass | State |
| 2020-10-09 | SONOCO PRODUCTS COMPANY | HARTSVILLE, Darlington, SC | Pass | State |
| 2020-10-09 | CLOUD HQ | MANASSAS, Prince William, VA | Pass | State |
| 2020-10-09 | INGENCO WHOLESALE POWER LLC - NEW RIVER | DUBLIN, Pulaski, VA | Pass | State |
| 2020-10-09 | PORT TOWNSEND PAPER CORPORATION — high-priority violation on file | PORT TOWNSEND, Jefferson, WA | Pass | State |
| 2020-10-09 | PORT TOWNSEND PAPER CORPORATION — high-priority violation on file | PORT TOWNSEND, Jefferson, WA | Pass | State |
| 2020-10-09 | KERRY, INC. | MANITOWOC, Manitowoc, WI | Pass | State |
| 2020-10-08 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | BILLINGSLEY, Autauga, AL | Pass | State |
| 2020-10-08 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | BILLINGSLEY, Autauga, AL | Pass | State |
| 2020-10-08 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | BILLINGSLEY, Autauga, AL | Pass | State |
| 2020-10-08 | FREEBIRD GAS STORAGE | DETROIT, Lamar, AL | Pass | State |
| 2020-10-08 | FREEBIRD GAS STORAGE | DETROIT, Lamar, AL | Pass | State |
| 2020-10-08 | AMRIZE CEMENT, INC. | THEODORE, Mobile, AL | Pass | State |
| 2020-10-08 | DESOTO GATHERING COMPANY, LLC - YOGI CPF-2 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2020-10-08 | DESOTO GATHERING COMPANY, LLC - YOGI CPF-2 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2020-10-08 | CEMEX LLC - BLACK MT. QUARRY | APPLE VALLEY, San Bernardino, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-08 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.