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 |
|---|---|---|---|---|
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | MACPHERSON OIL CO - HEAVY OIL | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-11 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | N/A | State |
| 2020-09-11 | COORSTEK INC - CLEAR CREEK VALLEY PLANT — high-priority violation on file | GOLDEN AREA, Jefferson, CO | N/A | State |
| 2020-09-11 | HECO - WAIAU | PEARL CITY, Honolulu, HI | Pass | State |
| 2020-09-11 | GREEN COW POWER LLC — high-priority violation on file | GOSHEN, Elkhart, IN | Pass | State |
| 2020-09-11 | GREEN COW POWER LLC — high-priority violation on file | GOSHEN, Elkhart, IN | Pass | State |
| 2020-09-11 | GREEN COW POWER LLC — high-priority violation on file | GOSHEN, Elkhart, IN | Pass | State |
| 2020-09-11 | ROCHESTER METAL PRODUCTS CORPORATION — high-priority violation on file | ROCHESTER, Fulton, IN | Pass | State |
| 2020-09-11 | DUKE ENERGY INDIANA LLC - GIBSON GENERATING STATION | OWENSVILLE, Gibson, IN | Pass | State |
| 2020-09-11 | DISCOVERY PRODUCER SERVICES LLC - DISCOVERY PARADIS FRACTIONATION PLANT | PARADIS, St. Charles, LA | Pass | State |
| 2020-09-11 | RIVER CEMENT CO. DBA BUZZI UNICEM USA SELMA PLANT | FESTUS, Jefferson, MO | Pass | State |
| 2020-09-11 | RIVER CEMENT CO. DBA BUZZI UNICEM USA SELMA PLANT | FESTUS, Jefferson, MO | Pass | State |
| 2020-09-11 | ARDAGH GLASS INC. | PEVELY, Jefferson, MO | Pending | State |
| 2020-09-11 | ARDAGH GLASS INC. | PEVELY, Jefferson, MO | Pending | State |
| 2020-09-11 | THOMAS HILL ENERGY CENTER - POWER DIVISION | CLIFTON HILL, Randolph, MO | Pending | State |
| 2020-09-11 | WEYERHAEUSER-EVERGREEN — high-priority violation on file | KALISPELL, Flathead, MT | Pass | State |
| 2020-09-11 | SILGAN CONTAINERS — high-priority violation on file | MAXTON, Robeson, NC | Pass | State |
| 2020-09-11 | WILDCAT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2020-09-11 | WILDCAT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2020-09-11 | LEO THORSNESS FACILITY | JAL, Lea, NM | Pass | State |
| 2020-09-11 | HONDA DEV & MFG OF AMERICA, LLC, MARYSVILLE AUTO PLANT — high-priority violation on file | MARYSVILLE, Union, OH | Pass | State |
| 2020-09-11 | GENERAL JAMES M. GAVIN POWER PLANT | CHESHIRE, Gallia, OH | Pass | State |
| 2020-09-11 | GENERAL JAMES M. GAVIN POWER PLANT | CHESHIRE, Gallia, OH | Pass | State |
| 2020-09-11 | GENERAL JAMES M. GAVIN POWER PLANT | CHESHIRE, Gallia, OH | Pass | State |
| 2020-09-11 | CARGILL SALT (FORMERLY DEICING TECHNOLOGY) | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2020-09-11 | AGMET LLC | OAKWOOD, Cuyahoga, OH | Pass | State |
| 2020-09-11 | MARKWEST PIONEER LLC / ARKOMA COMPRESSOR STATION | COALGATE, Coal, OK | Pass | State |
| 2020-09-11 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2020-09-11 | COLUMBIA GAS TRANS LLC/EAGLE | CHESTER SPRINGS, Chester, PA | Pass | State |
| 2020-09-11 | MANCHESTER STREET, LLC | PROVIDENCE, Providence, RI | Pass | State |
| 2020-09-11 | SANTEE COOPER WINYAH GENERATING STATION | GEORGETOWN, Georgetown, SC | Pass | State |
| 2020-09-11 | SANTEE COOPER WINYAH GENERATING STATION | GEORGETOWN, Georgetown, SC | Pass | State |
| 2020-09-11 | AMAZON DCA-50 | ELKWOOD, Culpeper, VA | Pass | State |
| 2020-09-10 | INTERNATIONAL PAPER COMPANY — high-priority violation on file | SELMA, Dallas, AL | Pass | State |
| 2020-09-10 | SSAB ALABAMA INC | AXIS, Mobile, AL | Pass | State |
| 2020-09-10 | SSAB ALABAMA INC | AXIS, Mobile, AL | Pass | State |
| 2020-09-10 | ALABAMA POWER COMPANY | WILSONVILLE, Shelby, AL | Pass | State |
| 2020-09-10 | ACME BRICK COMPANY - PERLA PLANT | MALVERN, Hot Spring, AR | Pass | State |
| 2020-09-10 | ACME BRICK COMPANY - PERLA PLANT | MALVERN, Hot Spring, AR | Pass | State |
| 2020-09-10 | ANTHONY TIMBERLANDS, INC. - BEARDEN | BEARDEN, Ouachita, AR | Pass | State |
| 2020-09-10 | LANXESS CORPORATION-SOUTH PLANT | EL DORADO, Union, AR | Pass | State |
| 2020-09-10 | LANXESS CORPORATION-SOUTH PLANT | EL DORADO, Union, AR | Fail | State |
| 2020-09-10 | OWENS CORNING ROOFING & ASPHALT, LLC | COMPTON, Los Angeles, CA | Pass | Local |
| 2020-09-10 | PASADENA CITY, DWP (EIS USE) | PASADENA, Los Angeles, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-09-10 | CHEVRON USA INC- HEAVY OIL — high-priority violation on file | BAKERSFIELD, Kern, 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 2020. It lists 33,437 stack tests recorded nationwide in 2020.