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 |
|---|---|---|---|---|
| 2020-11-04 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2020-11-04 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2020-11-04 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2020-11-04 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2020-11-04 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2020-11-04 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2020-11-04 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2020-11-04 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2020-11-04 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2020-11-04 | CHS INC REFINERY LAUREL | LAUREL, Yellowstone, MT | Pass | State |
| 2020-11-04 | WASHINGTON RANCH STORAGE FACILITY — high-priority violation on file | WHITES CITY, Eddy, NM | Pass | State |
| 2020-11-04 | POKER LAKE NO1 COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2020-11-04 | ENTERPRISE - OXY SAND DUNES CENTRAL COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2020-11-04 | PECOS RIVER TREATER | MALAGA, Eddy, NM | Pass | State |
| 2020-11-04 | PLANTVIEW COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2020-11-04 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2020-11-04 | WINNEMUCCA PLANT — high-priority violation on file | WINNEMUCCA, Humboldt, NV | Pass | State |
| 2020-11-04 | PABCO GYPSUM | LAS VEGAS, Clark, NV | Pass | Local |
| 2020-11-04 | PABCO GYPSUM | LAS VEGAS, Clark, NV | Pass | Local |
| 2020-11-04 | AQUATIC COMPANY — high-priority violation on file | MOAPA, Clark, NV | Pass | Local |
| 2020-11-04 | NEXPERA FORT HILL PLANT | NORTH BEND, Hamilton, OH | Pass | State |
| 2020-11-04 | NEXPERA FORT HILL PLANT | NORTH BEND, Hamilton, OH | Pass | State |
| 2020-11-04 | NEXPERA FORT HILL PLANT | NORTH BEND, Hamilton, OH | Pass | State |
| 2020-11-04 | DEVON ENERGY PRODUCTION CO LP / KRAKEN CTB | WATONGA, Blaine, OK | Pass | State |
| 2020-11-04 | ET GATHERING PROCESSING LLC / NAPLES COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2020-11-04 | ET GATHERING PROCESSING LLC / NAPLES COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2020-11-04 | ET GATHERING PROCESSING LLC / NAPLES COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2020-11-04 | ET GATHERING PROCESSING LLC / NAPLES COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2020-11-04 | ET GATHERING PROCESSING LLC / NAPLES COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2020-11-04 | ONEOK FIELD SERVICES CO LLC / RIDDLE COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2020-11-04 | ONEOK FIELD SERVICES CO LLC / RIDDLE COMPRESSOR STATION | ALEX, Grady, OK | Pass | State |
| 2020-11-04 | ET GATHERING PROCESSING LLC / POWELL COMPRESSOR STATION | ASHLAND, Pittsburg, OK | Pass | State |
| 2020-11-04 | ET GATHERING PROCESSING LLC / POWELL COMPRESSOR STATION | ASHLAND, Pittsburg, OK | Pass | State |
| 2020-11-04 | ET GATHERING PROCESSING LLC / POWELL COMPRESSOR STATION | ASHLAND, Pittsburg, OK | Pass | State |
| 2020-11-04 | GEORGIA-PACIFIC WAUNA LLC — high-priority violation on file | CLATSKANIE, Clatsop, OR | Pass | State |
| 2020-11-04 | WASTE MGMT OF FAIRLESS/FAIRLESS LDFL — high-priority violation on file | MORRISVILLE, Bucks, PA | Pass | State |
| 2020-11-04 | ALLEGHENY ENERGY SUPPLY/SPRINGDALE | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2020-11-04 | REEVES CONSTRUCTION COMPANY - BLACKSBURG ASPHALT PLANT | BLACKSBURG, Cherokee, SC | Pass | State |
| 2020-11-04 | SIMCOE - SALVADOR I / II CENTRAL DELIVERY POINT | DURANGO, La Plata, CO | Pass | U.S. EPA |
| 2020-11-04 | SMITH & NEPHEW, INC. | MEMPHIS, Shelby, TN | Pass | Local |
| 2020-11-04 | FUJIFILM WAKO CHEMICALS USA CORP | RICHMOND, Chesterfield, VA | Pass | State |
| 2020-11-04 | T M T GRAVEL AND CONTRACTING INC - PORTABLE 52899 | ASHLAND, Hanover, VA | Pass | State |
| 2020-11-04 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2020-11-04 | ANR PIPELINE CO - KEWASKUM COMPRESSOR ST | ADELL, Taylor, WI | Pass | State |
| 2020-11-04 | MARKWEST LIBERTY MIDSTREAM & RESOURCES, L.L.C., SHERWOOD | WEST UNION, Doddridge, WV | Pass | State |
| 2020-11-04 | APPALACHIA MIDSTREAM SERVICES, L.L.C., PLEASANTS | ADALINE, Marshall, WV | Pass | State |
| 2020-11-04 | WYODAK PLANT (PACIFICORP) | GILLETTE, Campbell, WY | Pass | State |
| 2020-11-04 | BEAR DRAW-BRUIN COMPRESSOR STATION (POWDER RIVER MIDSTREAM LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2020-11-04 | CKN-ROCK SPRINGS STATION (MOUNTAIN WEST PIPELINE, LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2020-11-03 | ALABAMA POWER COMPANY | BUCKS, Mobile, AL | Pass | State |
| 2020-11-03 | NUCOR STEEL DECATUR LLC | TRINITY, Morgan, AL | Pass | State |
| 2020-11-03 | NUCOR STEEL DECATUR LLC | TRINITY, Morgan, AL | Pass | State |
| 2020-11-03 | MISSISSIPPI LIME COMPANY | CALERA, Shelby, AL | Pass | State |
| 2020-11-03 | MISSISSIPPI LIME COMPANY | CALERA, Shelby, AL | Pass | State |
| 2020-11-03 | DESOTO GATHERING COMPANY LLC - YELLOWSTONE CPF-2 | QUITMAN, Van Buren, AR | Pass | State |
| 2020-11-03 | DESOTO GATHERING COMPANY, LLC - YELLOWSTONE CPF-3 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2020-11-03 | RAZORBACK GATHERING COMPANY, LLC. - ROSE BUD COMPRESSOR STATION | SEARCY, White, AR | Pass | State |
| 2020-11-03 | RAZORBACK GATHERING COMPANY, LLC. - ROSE BUD COMPRESSOR STATION | SEARCY, White, AR | Pass | State |
| 2020-11-03 | BLYTHE ENERGY LLC (FPL FLORIDA POWER) | BLYTHE, Riverside, CA | Pass | Local |
| 2020-11-03 | CITY OF SACRAMENTO - 28TH ST LANDFILL | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
| 2020-11-03 | RIO BRAVO FRESNO — high-priority violation on file | FRESNO, Fresno, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.