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 |
|---|---|---|---|---|
| 2021-12-08 | MAGNITUDE 7 METALS, LLC | MARSTON, New Madrid, MO | Pending | State |
| 2021-12-08 | CERTAINTEED - GADS HILL PLANT | PIEDMONT, Wayne, MO | Pass | State |
| 2021-12-08 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2021-12-08 | CHEMOURS COMPANY FC LLC THE, DELISLE PLANT | PASS CHRISTI, Harrison, MS | Pass | State |
| 2021-12-08 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2021-12-08 | ROXUL USA INC | BYHALIA, Marshall, MS | Pass | State |
| 2021-12-08 | ROXUL USA INC | BYHALIA, Marshall, MS | Pass | State |
| 2021-12-08 | ROXUL USA INC | BYHALIA, Marshall, MS | Pass | State |
| 2021-12-08 | ROXUL USA INC | BYHALIA, Marshall, MS | Pass | State |
| 2021-12-08 | CRAVEN COUNTY WOOD ENERGY, L.P. | NEW BERN, Craven, NC | Pending | State |
| 2021-12-08 | DAVIDSON GAS PRODUCERS, LLC - DAVIDSON CO. LANDFILL | LEXINGTON, Davidson, NC | Pass | State |
| 2021-12-08 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-12-08 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-12-08 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-12-08 | US ARMY PICATINNY ARSENAL — high-priority violation on file | PICATINNY ARSENAL, Morris, NJ | Pass | State |
| 2021-12-08 | RDX FEDERAL COM 17-26S30E-C PAD | MALAGA, Eddy, NM | Pass | State |
| 2021-12-08 | RDX FEDERAL COM 17-26S30E-C PAD | MALAGA, Eddy, NM | Pass | State |
| 2021-12-08 | MOSAIC COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-12-08 | MOSAIC COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-12-08 | MOCKINGBIRD CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2021-12-08 | MOCKINGBIRD CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2021-12-08 | MOCKINGBIRD CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2021-12-08 | EOG - BODACIOUS LOCALIZED GAS LIFT STATION | JAL, Lea, NM | Pass | State |
| 2021-12-08 | EOG - BODACIOUS LOCALIZED GAS LIFT STATION | JAL, Lea, NM | Pass | State |
| 2021-12-08 | EOG - BODACIOUS LOCALIZED GAS LIFT STATION | JAL, Lea, NM | Pass | State |
| 2021-12-08 | EOG - RED HILLS SOLAR LOCALIZED GAS LIFT STATION | JAL, Lea, NM | Pass | State |
| 2021-12-08 | EOG - RED HILLS SOLAR LOCALIZED GAS LIFT STATION | JAL, Lea, NM | Pass | State |
| 2021-12-08 | LUNA ENERGY CENTER | DEMING, Luna, NM | Pass | State |
| 2021-12-08 | WINNEMUCCA COMPRESSOR STATION #4 | WINNEMUCCA, Humboldt, NV | Pass | State |
| 2021-12-08 | U S SALT - WATKINS GLEN REFINERY | READING, Schuyler, NY | Pass | State |
| 2021-12-08 | ASCENT RESOURCES - UTICA LLC - BAKOS CLR BI | COLERAIN, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2021-12-08 | ASCENT RESOURCES - UTICA LLC - BAKOS CLR BI | COLERAIN, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2021-12-08 | ASCENT RESOURCES - UTICA LLC - BAKOS CLR BI | COLERAIN, TOWNSHIP OF, Belmont, OH | Pass | State |
| 2021-12-08 | ASCENT RESOURCES - UTICA LLC - HARR MTP JF | RAYLAND, Jefferson, OH | Pass | State |
| 2021-12-08 | ASCENT RESOURCES - UTICA LLC - HARR MTP JF | RAYLAND, Jefferson, OH | Pass | State |
| 2021-12-08 | ASCENT RESOURCES - UTICA LLC - HARR MTP JF | RAYLAND, Jefferson, OH | Pass | State |
| 2021-12-08 | CORIX CLEVELAND THERMAL GENERATING LP | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2021-12-08 | UNIVERSITY OF CINCINNATI | CINCINNATI, Hamilton, OH | Pass | State |
| 2021-12-08 | ONEOK FIELD SERVICES CO LLC / PAYNE COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2021-12-08 | ONEOK FIELD SERVICES CO LLC / PAYNE COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2021-12-08 | ONEOK FIELD SERVICES CO LLC / CEDAR LAKE COMPRESSOR STATION | CALUMET, Canadian, OK | Pass | State |
| 2021-12-08 | ONEOK FIELD SERVICES CO LLC / CEDAR LAKE COMPRESSOR STATION | CALUMET, Canadian, OK | Pass | State |
| 2021-12-08 | ONEOK FIELD SERVICES CO LLC / CEDAR LAKE COMPRESSOR STATION | CALUMET, Canadian, OK | Pass | State |
| 2021-12-08 | TOM STACK LLC / BIG SKY COMPRESSOR STATION | UNION CITY, Canadian, OK | Pass | State |
| 2021-12-08 | BLUESTONE PIPELINE CO OF PA CDP#5/HARFORD TWP | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2021-12-08 | INDUPLATE INC. | NORTH PROVIDENCE, Providence, RI | Fail | State |
| 2021-12-08 | INEOS US CHEMICALS COMPANY - COOPER RIVER PLANT — high-priority violation on file | WANDO, Berkeley, SC | Pass | State |
| 2021-12-08 | SANTEE COOPER WINYAH GENERATING STATION | GEORGETOWN, Georgetown, SC | Pass | State |
| 2021-12-08 | SANTEE COOPER WINYAH GENERATING STATION | GEORGETOWN, Georgetown, SC | Pass | State |
| 2021-12-08 | NICCA USA INC | FOUNTAIN INN, Laurens, SC | Pass | State |
| 2021-12-08 | BMW MANUFACTURING CO LLC | GREER, Greenville, SC | Pass | State |
| 2021-12-08 | MINASOLVE, LLC | MEMPHIS, Shelby, TN | Pass | Local |
| 2021-12-08 | CAMELOT LANDFILL GAS TO ENERGY FACILITY | LEWISVILLE, Denton, TX | Pass | State |
| 2021-12-08 | CABINETWORKS GROUP MICHIGAN, LLC - MOUNT JACKSON | MOUNT JACKSON, Shenandoah, VA | Pass | State |
| 2021-12-08 | CASCADES TISSUE GROUP - WI INC | EAU CLAIRE, Eau Claire, WI | Pass | State |
| 2021-12-08 | THE NEWARK GROUP, INC. | MILWAUKEE, Monroe, WI | Pass | State |
| 2021-12-08 | COLUMBIA GAS TRANSMISSION, LLC, LOST RIVER | MATHIAS, Hardy, WV | Pass | State |
| 2021-12-08 | EAKIN COMPRESSOR STATION (MOUNTAIN WEST PIPELINE, LLC) | UINTA COUNTY, Uinta, WY | Pass | State |
| 2021-12-07 | CHEROKEE NITROGEN LLC | CHEROKEE, Colbert, AL | Pass | State |
| 2021-12-07 | WESTROCK MILL COMPANY LLC | DEMOPOLIS, Marengo, AL | Pass | State |
| 2021-12-07 | GP CELLULOSE ALABAMA RIVER CELLULOSE LLC | PERDUE HILL, Monroe, AL | Pass | State |
| 2021-12-07 | ET GATHERING & PROCESSING LLC. - CHISMVILLE COMPRESSOR STATION | BOONEVILLE, Logan, AR | Pass | State |
| 2021-12-07 | ET GATHERING & PROCESSING LLC. - CHISMVILLE COMPRESSOR STATION | BOONEVILLE, Logan, AR | Pass | State |
| 2021-12-07 | DESOTO GATHERING COMPANY LLC. - SOUTHWEST GREER LAKE CPF-3 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2021-12-07 | DESOTO GATHERING COMPANY, LLC - NORTH YELLOWSTONE CPF-2 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2021-12-07 | LA CO., INTERNAL SERVICE DEPT | LOS ANGELES, Los Angeles, CA | Pass | Local |
| 2021-12-07 | LA CO., INTERNAL SERVICE DEPT | LOS ANGELES, Los Angeles, CA | Pass | Local |
| 2021-12-07 | OWENS-BROCKWAY GLASS CONTAINER — high-priority violation on file | VERNON, Los Angeles, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2021-12-07 | CITY OF CLOVIS - LANDFILL | CLOVIS, Fresno, CA | Pass | Local |
| 2021-12-07 | CITY OF CLOVIS - LANDFILL | CLOVIS, Fresno, CA | Pass | Local |
| 2021-12-07 | CITY OF CLOVIS - LANDFILL | CLOVIS, Fresno, CA | Pass | Local |
| 2021-12-07 | CITY OF CLOVIS - LANDFILL | CLOVIS, Fresno, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.