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 |
|---|---|---|---|---|
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | FRESNO COGEN PARTNERS | SAN JOAQUIN, Fresno, CA | Pass | Local |
| 2021-12-13 | COVIDIEN LP | NORTH HAVEN, New Haven, CT | Pass | State |
| 2021-12-13 | COVIDIEN LP | NORTH HAVEN, New Haven, CT | Pass | State |
| 2021-12-13 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-13 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-13 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-13 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-13 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-13 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-13 | SUGAR CANE GROWERS CO-OP | BELLE GLADE, Palm Beach, FL | Pass | State |
| 2021-12-13 | INTERNATIONAL PAPER - FLINT RIVER MILL | OGLETHORPE, Macon, GA | Pass | State |
| 2021-12-13 | HILLSHIRE BRANDS - CLARYVILLE PLANT | ALEXANDRIA (CAMPBELL), Campbell, KY | Pass | State |
| 2021-12-13 | LATTIN 3-15-13 #1 & 3&34 HC #1, 2, & 3-ALT TANK BATTERY - CASPIANA FIELD | FRIERSON, De Soto, LA | Pass | State |
| 2021-12-13 | LATTIN 3-15-13 #1 & 3&34 HC #1, 2, & 3-ALT TANK BATTERY - CASPIANA FIELD | FRIERSON, De Soto, LA | Pass | State |
| 2021-12-13 | JACKSON DAVIS 25-24HC-001 & 002 ALT | STONEWALL, De Soto, LA | Pass | State |
| 2021-12-13 | ADRIAN LANDFILL | ADRIAN, Lenawee, MI | Pass | State |
| 2021-12-13 | SAPPI CLOQUET LLC | CLOQUET, Carlton, MN | Pass | State |
| 2021-12-13 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 2 | SPRINGFIELD, Greene, MO | Pass | State |
| 2021-12-13 | BRININSTOOL COMPRESSOR STATION | EUNICE, Lea, NM | Pass | State |
| 2021-12-13 | BONNYMAN COMPRESSOR STATION | LOVING, Lea, NM | Pass | State |
| 2021-12-13 | BONNYMAN COMPRESSOR STATION | LOVING, Lea, NM | Pass | State |
| 2021-12-13 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2021-12-13 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2021-12-13 | KILGORE COMPRESSOR STATION-UTICA GAS SERVICES, LLC | KILGORE, Carroll, OH | Pass | State |
| 2021-12-13 | GULFPORT APPALACHIA, LLC - LANCE WELL PAD | MARTINS FERRY, Belmont, OH | Pass | State |
| 2021-12-13 | GULFPORT APPALACHIA, LLC - LANCE WELL PAD | MARTINS FERRY, Belmont, OH | Pass | State |
| 2021-12-13 | GULFPORT APPALACHIA, LLC - LANCE WELL PAD | MARTINS FERRY, Belmont, OH | Pass | State |
| 2021-12-13 | GULFPORT APPALACHIA LLC - MCKEEGAN PAD | MARTINS FERRY, Belmont, OH | Pass | State |
| 2021-12-13 | GULFPORT APPALACHIA LLC - MCKEEGAN PAD | MARTINS FERRY, Belmont, OH | Pass | State |
| 2021-12-13 | GULFPORT APPALACHIA LLC - MCKEEGAN PAD | MARTINS FERRY, Belmont, OH | Pass | State |
| 2021-12-13 | ET GATHERING PROCESSING LLC / BURTSCHI COMPRESSOR STATION | NORGE, Grady, OK | Pass | State |
| 2021-12-13 | MARKWEST OKLAHOMA GAS CO LLC / BREWER COMPRESSOR STATION | STUART, Hughes, OK | Pass | State |
| 2021-12-13 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2021-12-13 | TOM STACK LLC / KARBACH COMPRESSOR STATION | OMEGA, Kingfisher, OK | Pass | State |
| 2021-12-13 | EXPAND OPERATING LLC/NOWICKI PAD NR25 | SUSQUEHANNA, Susquehanna, PA | Pass | State |
| 2021-12-13 | EXPAND OPERATING LLC/RU-71 BLUE BECK WELLPAD | MILFORD, Susquehanna, PA | Pass | State |
| 2021-12-13 | HUNTINGTON INGALLS INCORPORATED - NN SHIPBLDG DIV | NEWPORT NEWS, Newport News (city), VA | Fail | State |
| 2021-12-13 | WHEELABRATOR PORTSMOUTH INC - RDF FACILITY | PORTSMOUTH, Portsmouth (city), VA | Pass | State |
| 2021-12-13 | FRANZ SEATTLE DIVISION - WELLER ST. | SEATTLE, King, WA | Pass | Local |
| 2021-12-12 | REWORLD PLYMOUTH/ PLYMOUTH — high-priority violation on file | CONSHOHOCKEN, Montgomery, PA | Pass | State |
| 2021-12-11 | CON ED-74TH STREET STATION | NEW YORK, New York, NY | Pass | State |
| 2021-12-11 | SCRUBGRASS GENERATING PLT/VENANGO — high-priority violation on file | KENNERDELL, Venango, PA | Pass | State |
| 2021-12-10 | NUCOR YAMATO STEEL COMPANY | BLYTHEVILLE, Mississippi, AR | Pass | State |
| 2021-12-10 | NUCOR YAMATO STEEL COMPANY | BLYTHEVILLE, Mississippi, AR | Pass | State |
| 2021-12-10 | DESOTO GATHERING COMPANY, LLC - MIDGE CPF-1 | SEARCY, White, AR | Pass | State |
| 2021-12-10 | DESOTO GATHERING COMPANY, LLC - TIGER CPF 2 | JUDSONIA, White, AR | Pass | State |
| 2021-12-10 | SOLANA GENERATING STATION | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2021-12-10 | INEOS POLYPROPYLENE LLC | CARSON, Los Angeles, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-10 | SHELL PIPELINE CO. | BAKERSFIELD, Kern, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.