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 |
|---|---|---|---|---|
| 2021-10-12 | FCA US LLC - DETROIT ASSEMBLY COMPLEX — high-priority violation on file | DETROIT, Wayne, MI | Pending | State |
| 2021-10-12 | ADM - MANKATO | MANKATO, Blue Earth, MN | Pass | State |
| 2021-10-12 | CHS MANKATO | MANKATO, Blue Earth, MN | Pass | State |
| 2021-10-12 | POET BIOREFINING LAKE CRYSTAL LLC | LAKE CRYSTAL, Blue Earth, MN | Pass | State |
| 2021-10-12 | EGA SPECTRO ALLOYS | ROSEMOUNT, Dakota, MN | Fail | State |
| 2021-10-12 | AMERICAN CRYSTAL SUGAR - CROOKSTON | CROOKSTON, Polk, MN | Pass | State |
| 2021-10-12 | WBI ENERGY TRANSMISSION, INC. - CHARBONNEAU COMPRESSOR STATION - AQ | CARTWRIGHT, McKenzie, ND | Pass | State |
| 2021-10-12 | WBI ENERGY TRANSMISSION, INC. - CHARBONNEAU COMPRESSOR STATION - AQ | CARTWRIGHT, McKenzie, ND | Pass | State |
| 2021-10-12 | RUTGERS HEALTH SCIENCES CAMPUS | NEWARK, Essex, NJ | Pass | State |
| 2021-10-12 | MARK WEST - BELL LAKE SOUTH COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-10-12 | TWIN CREEKS MINE — high-priority violation on file | GOLCONDA, Humboldt, NV | Pass | State |
| 2021-10-12 | QUAKER CITY CASTINGS | SALEM, Columbiana, OH | Pass | State |
| 2021-10-12 | GERKEN MATERIAL, INC. PLANT #5 | OTTAWA, Putnam, OH | Pass | State |
| 2021-10-12 | ASCENT RESOURCES - UTICA LLC - LEE CLR BL WELLPAD | BRIDGEPORT, Belmont, OH | Pass | State |
| 2021-10-12 | ASCENT RESOURCES - UTICA LLC - LEE CLR BL WELLPAD | BRIDGEPORT, Belmont, OH | Pass | State |
| 2021-10-12 | ASCENT RESOURCES - UTICA LLC - LEE CLR BL WELLPAD | BRIDGEPORT, Belmont, OH | Pass | State |
| 2021-10-12 | ASCENT RESOURCES - UTICA, LLC - CHC DUTTON (WHEELING) | FLUSHING, Belmont, OH | Pass | State |
| 2021-10-12 | ASCENT RESOURCES - UTICA, LLC - CHC DUTTON (WHEELING) | FLUSHING, Belmont, OH | Pass | State |
| 2021-10-12 | ASCENT RESOURCES - UTICA, LLC - CHC DUTTON (WHEELING) | FLUSHING, Belmont, OH | Pass | State |
| 2021-10-12 | SOUTHERLY WASTEWATER TREATMENT CENTER | CUYAHOGA HEIGHTS, Cuyahoga, OH | Pass | State |
| 2021-10-12 | ET GATHERING PROCESSING LLC / COTTONWOOD COMPRESSOR STATION | LAMBERT, Alfalfa, OK | Pass | State |
| 2021-10-12 | TOM STACK LLC / BIG SKY COMPRESSOR STATION | UNION CITY, Canadian, OK | Pass | State |
| 2021-10-12 | ET GATHERING PROCESSING LLC / BEAR CREEK COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pass | State |
| 2021-10-12 | ET GATHERING PROCESSING LLC / BEAR CREEK COMPRESSOR STATION | RATLIFF CITY, Carter, OK | Pass | State |
| 2021-10-12 | ET GATHERING PROCESSING LLC / FOSTER COMPRESSOR STATION | ELMORE CITY, Garvin, OK | Pass | State |
| 2021-10-12 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2021-10-12 | OG AND E / SOONER GENERATING STATION | RED ROCK, Noble, OK | Pass | State |
| 2021-10-12 | MONROE ENERGY LLC/TRAINER — high-priority violation on file | TRAINER, Delaware, PA | Pass | State |
| 2021-10-12 | EXCO APPLACHIA MIDSTREAM LLC/CONFER COMP STA | BURNSIDE TWP, Centre, PA | Pass | State |
| 2021-10-12 | WILLIAMS FIELD SVC CO LLC/LATHROP COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2021-10-12 | BLUESTONE PIPELINE CO/COMFORT LAKE COMP STA | HARMONY TWP, Susquehanna, PA | Pass | State |
| 2021-10-12 | EQUITRANS LP/REDHOOK COMPRESSOR STATION | WAYNESBURG, Greene, PA | Pass | State |
| 2021-10-12 | CNX MIDSTREAM OPR CO LLC/RHL 22 DEHYDRATION STA | WIND RIDGE, Greene, PA | Pass | State |
| 2021-10-12 | RI RESOURCE RECOVERY CORP-CENTRAL LNDFL | JOHNSTON, TOWN OF, Providence, RI | Fail | State |
| 2021-10-12 | INTERNATIONAL PAPER - GEORGETOWN MILL | GEORGETOWN, Georgetown, SC | Pass | State |
| 2021-10-12 | BMW MANUFACTURING CO LLC | GREER, Greenville, SC | Pass | State |
| 2021-10-12 | NORTHERN BORDER PIPELINE COMPANY - ESTELLINE COMPRESSOR | ESTELLINE, Deuel, SD | Pass | State |
| 2021-10-12 | BORGER REFINERY — high-priority violation on file | BORGER, Hutchinson, TX | Pass | State |
| 2021-10-12 | BORGER REFINERY — high-priority violation on file | BORGER, Hutchinson, TX | Pass | State |
| 2021-10-12 | BORGER REFINERY — high-priority violation on file | BORGER, Hutchinson, TX | Pass | State |
| 2021-10-12 | PORT TOWNSEND PAPER CORPORATION — high-priority violation on file | PORT TOWNSEND, Jefferson, WA | Pass | State |
| 2021-10-12 | ANACORTES WWTP SEWAGE SLUDGE INCINERATOR | ANACORTES, Skagit, WA | Pass | Local |
| 2021-10-12 | NAVAL BASE KITSAP AT BREMERTON | BREMERTON, Kitsap, WA | Pass | Local |
| 2021-10-12 | NAVAL BASE KITSAP AT BREMERTON | BREMERTON, Kitsap, WA | Pass | Local |
| 2021-10-12 | WI PUBLIC SERVICE WESTON POWER PLANT | KRONENWETTER, Marathon, WI | Pass | State |
| 2021-10-12 | EASTERN GAS TRANSMISSION AND STORAGE, INC., CORNWELL STATION | CLENDENIN, Kanawha, WV | Pass | State |
| 2021-10-12 | COLUMBIA GAS TRANSMISSION, LLC, ELK RIVER | CLENDENIN, Kanawha, WV | Pass | State |
| 2021-10-12 | MOUNTAIN GATHERING, LLC, MCCLELLAND STATION | WORTHINGTON, Marion, WV | Pass | State |
| 2021-10-12 | MONONGAHELA POWER COMPANY, FORT MARTIN STATION | MAIDSVILLE, Monongalia, WV | Pass | State |
| 2021-10-12 | 50 BUTTES PLANT (THUNDER CREEK GAS SERVICES, LLC) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2021-10-11 | W&T OFFSHORE, INC. | MOBILE BAY, Mobile, AL | Pass | State |
| 2021-10-11 | W&T OFFSHORE, INC. | MOBILE BAY, Mobile, AL | Pass | State |
| 2021-10-11 | W&T OFFSHORE, INC. | MOBILE BAY, Mobile, AL | Pass | State |
| 2021-10-11 | ARCOSA LIGHTWEIGHT, FRAZIER PARK (1603) — high-priority violation on file | FRAZIER PARK, Ventura, CA | Pass | Local |
| 2021-10-11 | FULCRUM ENERGY - OXBOW 0880 S29 | WALDEN 8.9 MI. N OF, Jackson, CO | N/A | State |
| 2021-10-11 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2021-10-11 | WEST FRASER, INC | MCDAVID, Escambia, FL | Pass | State |
| 2021-10-11 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-11 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-11 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-11 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-11 | PRODUCTS (SE) PIPE LINE CORP - BREMEN TANK FARM | BREMEN, Haralson, GA | Pass | State |
| 2021-10-11 | PRODUCTS (SE) PIPE LINE CORP - BREMEN TANK FARM | BREMEN, Haralson, GA | Pass | State |
| 2021-10-11 | TITAN TIRE | DES MOINES, Polk, IA | Pass | Local |
| 2021-10-11 | METAL TECHNOLOGIES AUBURN LLC — high-priority violation on file | AUBURN, DeKalb, IN | Pass | State |
| 2021-10-11 | LAND SHAPERS INC, ASPHALT PLANT | GULFPORT, Harrison, MS | Pass | State |
| 2021-10-11 | ONEOK ROCKIES MIDSTREAM, L.L.C. - BEAVERTAIL COMPRESSOR STATION - AQ | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-10-11 | MARKWEST - RED HILLS COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-10-11 | DUNBAR COMPRESSOR STATION | WINDSOR, Broome, NY | Pass | State |
| 2021-10-11 | INR OHIO, LLC - BETTINGER WELL PAD | CALDWELL, Noble, OH | Pass | State |
| 2021-10-11 | INR OHIO, LLC - BETTINGER WELL PAD | CALDWELL, Noble, OH | Pass | State |
| 2021-10-11 | INR OHIO, LLC - BETTINGER WELL PAD | CALDWELL, Noble, OH | Pass | State |
| 2021-10-11 | ET GATHERING PROCESSING LLC / COTTONWOOD COMPRESSOR STATION | LAMBERT, Alfalfa, OK | Pass | State |
| 2021-10-11 | ET GATHERING PROCESSING LLC / COTTONWOOD COMPRESSOR STATION | LAMBERT, Alfalfa, OK | Pass | State |
| 2021-10-11 | TOM STACK LLC / CHISHOLM PLANT | CASHION, Kingfisher, OK | Pass | State |
| 2021-10-11 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2021-10-11 | NAVAL BASE KITSAP AT BREMERTON | BREMERTON, Kitsap, WA | Pass | Local |
| 2021-10-11 | QUAD/GRAPHICS INC - HARTFORD | HARTFORD, Dodge, WI | Pass | State |
| 2021-10-09 | WHEELABRATOR SAUGUS INC | SAUGUS, TOWN OF, Essex, MA | Pass | State |
| 2021-10-09 | TISBURY TOWING & TRANSPORTATION | NEW BEDFORD, Bristol, MA | Pending | State |
| 2021-10-08 | GOLDEN VALLEY ELECTRIC ASSOCIATION / HEALY POWER PLANT — high-priority violation on file | HEALY, Denali, AK | Pass | State |
| 2021-10-08 | GP CELLULOSE ALABAMA RIVER CELLULOSE LLC | PERDUE HILL, Monroe, AL | Pass | State |
| 2021-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Fail | Local |
| 2021-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Fail | Local |
| 2021-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Fail | Local |
| 2021-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Fail | Local |
| 2021-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-08 | CRESTWOOD WEST COAST LLC | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-08 | ASCEND PERFORMANCE MATERIALS OPERATIONS — high-priority violation on file | CANTONMENT, Escambia, FL | Pass | State |
| 2021-10-08 | MECO - PALAAU | PALAAU, Maui, HI | Pass | State |
| 2021-10-08 | ROCK ROAD COMPANIES INC | ROCHELLE, Ogle, IL | Pass | State |
| 2021-10-08 | HOWARD MATERIALS LLC | INDIANAPOLIS, Marion, IN | Pass | State |
| 2021-10-08 | SABIC INNOVATIVE PLASTICS US LLC | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-08 | SABIC INNOVATIVE PLASTICS US LLC | MOUNT VERNON, Posey, IN | Pass | State |
| 2021-10-08 | JH RUDOLPH & COMPANY INCORPORATED PETERSBURG | DALE, Spencer, IN | Pass | State |
| 2021-10-08 | JH RUDOLPH & COMPANY INCORPORATED PETERSBURG | DALE, Spencer, IN | Pass | State |
| 2021-10-08 | JH RUDOLPH & COMPANY INCORPORATED PETERSBURG | DALE, Spencer, IN | Pass | State |
| 2021-10-08 | JH RUDOLPH & COMPANY INCORPORATED PETERSBURG | DALE, Spencer, IN | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.