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 |
|---|---|---|---|---|
| 2020-10-07 | EOG RESOURCES INC / SPITFIRE 0817 1H | NEWCASTLE, McClain, OK | Pass | State |
| 2020-10-07 | EOG RESOURCES INC / TOMCAT 1621 1H | NEWCASTLE, McClain, OK | Pass | State |
| 2020-10-07 | OG AND E / MUSKOGEE GENERATING STATION — high-priority violation on file | FORT GIBSON, Muskogee, OK | Pass | State |
| 2020-10-07 | ET GATHERING PROCESSING LLC / ANTELOPE COMPRESSOR STATION | CRAWFORD, Roger Mills, OK | Pass | State |
| 2020-10-07 | EASTERN GAS TRANS & STORAGE INC/FINNEFROCK STA | RENOVO, Clinton, PA | Pass | State |
| 2020-10-07 | ENERGY TRANSFER MKT & TERM LP/NORTHUMBERLAND TERM | NORTHUMBERLAND, Northumberland, PA | Pass | State |
| 2020-10-07 | MERCK SHARP & DOHME LLC/WEST PT | WEST POINT, Montgomery, PA | Pass | State |
| 2020-10-07 | XTO ENERGY HOMER CITY PP COMP STA/INDIANA — high-priority violation on file | HOMER CITY, Indiana, PA | Pass | State |
| 2020-10-07 | WILLIAMS FIELD SVC CO LLC/ZICK COMP STA | KINGSLEY, Susquehanna, PA | Pass | State |
| 2020-10-07 | NATL FUEL GAS SUPPLY CORP/MERCER COMP STA | MERCER, Mercer, PA | Pass | State |
| 2020-10-07 | USS/CLAIRTON WORKS — high-priority violation on file | CLAIRTON, Allegheny, PA | Pass | Local |
| 2020-10-07 | COOLEY, INC. | PAWTUCKET, Providence, RI | Pass | State |
| 2020-10-07 | DIGITAL REALTY (DIGITAL LOUDOUN 3 & 4, LLC) | ASHBURN, Loudoun, VA | Pass | State |
| 2020-10-07 | BP WEST COAST PRODUCTS LLC — high-priority violation on file | BLAINE, Whatcom, WA | Pass | Local |
| 2020-10-07 | NORTHSIDE LANDFILL | SPOKANE, Spokane, WA | Pass | Local |
| 2020-10-07 | HARDEL MUTUAL PLYWOOD CORPORATION — high-priority violation on file | CHEHALIS, Lewis, WA | Pass | Local |
| 2020-10-07 | BROWNTOWN FOUNDRY LLC — high-priority violation on file | BROWNTOWN, Green, WI | Pass | State |
| 2020-10-07 | WILLIAMS OHIO VALLEY MIDSTREAM LLC, OAK GROVE | MOUNDSVILLE, Marshall, WV | Pass | State |
| 2020-10-07 | COLONY PLANT (BENTONITE PERFORMANCE MINERALS) | COLONY, Crook, WY | Pass | State |
| 2020-10-07 | CASPER COMPRESSOR STATION (TALLGRASS INTERSTATE GAS TRANSMISSION) | NATRONA COUNTY, Natrona, WY | Pass | State |
| 2020-10-07 | GREEN RIVER WORKS (TATA CHEMICALS (SODA ASH) PARTNERS) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-10-06 | SABIC INNOVATIVE PLASTICS US LLC | BURKVILLE, Lowndes, AL | Pass | State |
| 2020-10-06 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | SWEET WATER, Marengo, AL | Pass | State |
| 2020-10-06 | TRANSCONTINENTAL GAS PIPE LINE COMPANY L | SWEET WATER, Marengo, AL | Pass | State |
| 2020-10-06 | W&T OFFSHORE, INC. | MOBILE BAY, Mobile, AL | Pass | State |
| 2020-10-06 | W&T OFFSHORE, INC. | MOBILE BAY, Mobile, AL | Pass | State |
| 2020-10-06 | W&T OFFSHORE, INC. | MOBILE BAY, Mobile, AL | Pass | State |
| 2020-10-06 | AMVAC CHEMICAL COMPANY | AXIS, Mobile, AL | Pass | State |
| 2020-10-06 | CARMEUSE LIME & STONE INC | SAGINAW, Shelby, AL | Pass | State |
| 2020-10-06 | CARMEUSE LIME & STONE INC | SAGINAW, Shelby, AL | Pass | State |
| 2020-10-06 | CARMEUSE LIME & STONE INC | SAGINAW, Shelby, AL | Pass | State |
| 2020-10-06 | CARMEUSE LIME & STONE INC | SAGINAW, Shelby, AL | Pass | State |
| 2020-10-06 | INTERNATIONAL PAPER | PINE HILL, Wilcox, AL | Pass | State |
| 2020-10-06 | DRUMMOND COMPANY, INC. (ABC COKE) | BIRMINGHAM, Jefferson, AL | Pass | Local |
| 2020-10-06 | DESOTO GATHERING COMPANY, LLC - COVE CREEK CPF-3 | SPRINGFIELD, Conway, AR | Pass | State |
| 2020-10-06 | DESOTO GATHERING COMPANY, LLC - COVE CREEK CPF-3 | SPRINGFIELD, Conway, AR | Pass | State |
| 2020-10-06 | ENTERGY ARKANSAS, LLC - WHITE BLUFF PLANT | REDFIELD, Jefferson, AR | Pass | State |
| 2020-10-06 | ENABLE GAS TRANSMISSION, LLC (HELENA COMPRESSOR STATION) | HELENA, Phillips, AR | Pass | State |
| 2020-10-06 | RAZORBACK GATHERING COMPANY, LLC. - PEAR TREE CPF 1 | PANGBURN, White, AR | Pass | State |
| 2020-10-06 | EL PASO NATURAL GAS - WILLCOX COMPRESSOR STATION | WILLCOX, Cochise, AZ | Pass | State |
| 2020-10-06 | EL PASO NATURAL GAS CO - BOWIE COMPRESSOR STATION | BOWIE, Cochise, AZ | Pass | State |
| 2020-10-06 | SOLANA GENERATING STATION | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2020-10-06 | ENERGY 2001 | LINCOLN, Placer, CA | Pass | Local |
| 2020-10-06 | LADW&P-HAYNES STEAM | LONG BEACH, Los Angeles, CA | Pass | Local |
| 2020-10-06 | TORRANCE REFINING COMPANY LLC | TORRANCE, Los Angeles, CA | Pass | Local |
| 2020-10-06 | COLTON POWER, LP | COLTON, San Bernardino, CA | Pass | Local |
| 2020-10-06 | SDG&E CUYAMACA PEAK ENERGY PLANT | EL CAJON, San Diego, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2020-10-06 | 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.