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 |
|---|---|---|---|---|
| 2021-10-01 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Fail | Local |
| 2021-10-01 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Fail | Local |
| 2021-10-01 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Fail | Local |
| 2021-10-01 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Fail | Local |
| 2021-10-01 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Fail | Local |
| 2021-10-01 | STOCKTON RWCF — high-priority violation on file | STOCKTON, San Joaquin, CA | Fail | Local |
| 2021-10-01 | GIW INDUSTRIES, INC. | GROVETOWN, Columbia, GA | Pass | State |
| 2021-10-01 | MECO - PALAAU | PALAAU, Maui, HI | Pass | State |
| 2021-10-01 | ECO MAINE | PORTLAND, Cumberland, ME | Pass | State |
| 2021-10-01 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2021-10-01 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2021-10-01 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2021-10-01 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2021-10-01 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2021-10-01 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2021-10-01 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2021-10-01 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2021-10-01 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2021-10-01 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2021-10-01 | ONEOK ROCKIES MIDSTREAM, L.L.C. - STATELINE GAS PLANT - AQ | WILLISTON, Williams, ND | Pass | State |
| 2021-10-01 | COTTON DRAW - MOON COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-10-01 | COTTON DRAW - MOON COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-10-01 | ET GATHERING PROCESSING LLC / JET COMPRESSOR STATION | JET, Alfalfa, OK | Pass | State |
| 2021-10-01 | BCE MACH III MIDSTREAM HOLDINGS LLC / WAY SOUTH COMPRESSOR STATION 1 | CASHION, Kingfisher, OK | Pass | State |
| 2021-10-01 | LAUREL MTN MIDSTREAM OPR LLC/SPRINGHILL COMP STA | LAKE LYNN, Fayette, PA | Pass | State |
| 2021-10-01 | BURNETT A COMPRESSOR STATION | BORGER, Carson, TX | Pass | State |
| 2021-10-01 | HOLLYFRONTIER PUGET SOUND REFINERY | ANACORTES, Skagit, WA | Pass | Local |
| 2021-10-01 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2021-09-30 | WEST FRASER HUGULEY | HUGULEY, Chambers, AL | Pass | State |
| 2021-09-30 | CULLMAN CASTING CORPORATION | CULLMAN, Cullman, AL | Pass | State |
| 2021-09-30 | CULLMAN CASTING CORPORATION | CULLMAN, Cullman, AL | Pass | State |
| 2021-09-30 | SOUTHERN NATURAL GAS | GALLION, Hale, AL | Pass | State |
| 2021-09-30 | SOUTHERN NATURAL GAS | GALLION, Hale, AL | Pass | State |
| 2021-09-30 | AMRIZE CEMENT, INC. | THEODORE, Mobile, AL | Pass | State |
| 2021-09-30 | CARMEUSE LIME & STONE INC | SAGINAW, Shelby, AL | Pass | State |
| 2021-09-30 | CARMEUSE LIME & STONE INC | SAGINAW, Shelby, AL | Pass | State |
| 2021-09-30 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Pass | State |
| 2021-09-30 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Pass | State |
| 2021-09-30 | ANTHONY FOREST PRODUCTS COMPANY, LLC. | EL DORADO, Union, AR | Pass | State |
| 2021-09-30 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-09-30 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-09-30 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-09-30 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-09-30 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-09-30 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-09-30 | FRITO-LAY NORTH AMERICA, INC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-09-30 | JAX LNG LLC | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-09-30 | JAX LNG LLC | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-09-30 | JAX LNG LLC | JACKSONVILLE, Duval, FL | Pass | State |
| 2021-09-30 | PREFERRED MATERIALS, INC. | TAMPA, Hillsborough, FL | Pass | State |
| 2021-09-30 | VARN WOOD PRODUCTS, LLC | HOBOKEN, Brantley, GA | Pass | State |
| 2021-09-30 | VARN WOOD PRODUCTS, LLC | HOBOKEN, Brantley, GA | Pass | State |
| 2021-09-30 | VARN WOOD PRODUCTS, LLC | HOBOKEN, Brantley, GA | Pass | State |
| 2021-09-30 | VARN WOOD PRODUCTS, LLC | HOBOKEN, Brantley, GA | Pass | State |
| 2021-09-30 | VARN WOOD PRODUCTS, LLC | HOBOKEN, Brantley, GA | Pass | State |
| 2021-09-30 | INTERNATIONAL PAPER COMPANY - PORT WENTWORTH MILL | PORT WENTWORTH, Chatham, GA | Pass | State |
| 2021-09-30 | INTERNATIONAL PAPER COMPANY - PORT WENTWORTH MILL | PORT WENTWORTH, Chatham, GA | Pass | State |
| 2021-09-30 | CLEARWATER PAPER CORPORATION - AUGUSTA MILL — high-priority violation on file | AUGUSTA, Richmond, GA | Pass | State |
| 2021-09-30 | U.S. NAVY - PEARL HARBOR — high-priority violation on file | PEARL HARBOR, Honolulu, HI | Pass | State |
| 2021-09-30 | KINZE MFG & POWER PRODUCTS INC | WILLIAMSBURG (HISTORICAL), Iowa, IA | Pass | State |
| 2021-09-30 | VALLEY PAVING & ASPHALT 00086 | COTTONWOOD, Idaho, ID | Pass | State |
| 2021-09-30 | RIVERSTONE GROUP INC | MILAN, Rock Island, IL | Pass | State |
| 2021-09-30 | MID-STATES MATERIALS - GRAND SUMMIT QUARRY (AIR) | GRENOLA, Elk, KS | Pass | State |
| 2021-09-30 | MID-STATES MATERIALS - DENISON QUARRY | HOYT, Jackson, KS | Pass | State |
| 2021-09-30 | HARSHMAN CONST. - FLORENCE QUARRY (AIR) | FLORENCE QUARRY, Marion, KS | Pass | State |
| 2021-09-30 | MID-STATES MATERIALS - SKIDDY QUARRY (AIR) | WHITE CITY, Morris, KS | Pass | State |
| 2021-09-30 | COORSTEK INC | WORCESTER, CITY OF, Worcester, MA | Pass | State |
| 2021-09-30 | DTE ELECTRIC COMPANY - MONROE POWER PLANT | MONROE, Monroe, MI | Pending | State |
| 2021-09-30 | ANR -- RAPID RIVER COMPRESSOR STATION | KALKASKA, Kalkaska, MI | Pass | State |
| 2021-09-30 | UNIVERSITY OF MICHIGAN | ANN ARBOR, Washtenaw, MI | Pass | State |
| 2021-09-30 | AMERICAN CRYSTAL SUGAR - MOORHEAD — high-priority violation on file | MOORHEAD, Clay, MN | Pass | State |
| 2021-09-30 | MAGNITUDE 7 METALS, LLC | MARSTON, New Madrid, MO | Pending | State |
| 2021-09-30 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2021-09-30 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2021-09-30 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2021-09-30 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2021-09-30 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2021-09-30 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2021-09-30 | NOVOZYMES NORTH AMERICA, INC. | FRANKLINTON, Franklin, NC | Pass | State |
| 2021-09-30 | APAC - ATLANTIC INC. - ENKA | CANDLER, Buncombe, NC | Pass | Local |
| 2021-09-30 | NE RENEWABLE POWER SPRINGFIELD | SPRINGFIELD, Sullivan, NH | Pass | State |
| 2021-09-30 | NE RENEWABLE POWER SPRINGFIELD | SPRINGFIELD, Sullivan, NH | Pass | State |
| 2021-09-30 | LOGAN GENERATING COMPANY LP — high-priority violation on file | SWEDESBORO, Gloucester, NJ | Pass | State |
| 2021-09-30 | WOLVERINE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-09-30 | LEO THORSNESS FACILITY | JAL, Lea, NM | Pass | State |
| 2021-09-30 | FAB 8 | MALTA, Saratoga, NY | Pass | State |
| 2021-09-30 | RED-ROCHESTER LLC AT EASTMAN BUSINESS PARK | GREECE, ROCHESTER, Monroe, NY | Pass | State |
| 2021-09-30 | SOUTH FIELD ENERGY LLC | WELLSVILLE, Columbiana, OH | Pass | State |
| 2021-09-30 | SOUTH FIELD ENERGY LLC | WELLSVILLE, Columbiana, OH | Pass | State |
| 2021-09-30 | SOUTH FIELD ENERGY LLC | WELLSVILLE, Columbiana, OH | Pass | State |
| 2021-09-30 | SOUTH FIELD ENERGY LLC | WELLSVILLE, Columbiana, OH | Pass | State |
| 2021-09-30 | SOUTH FIELD ENERGY LLC | WELLSVILLE, Columbiana, OH | Pass | State |
| 2021-09-30 | SOUTH FIELD ENERGY LLC | WELLSVILLE, Columbiana, OH | Pass | State |
| 2021-09-30 | SOUTH FIELD ENERGY LLC | WELLSVILLE, Columbiana, OH | Pass | State |
| 2021-09-30 | DEPARTMENT OF PUBLIC UTILITIES, CITY OF ORRVILLE, OHIO | ORRVILLE, Wayne, OH | Pass | State |
| 2021-09-30 | DEPARTMENT OF PUBLIC UTILITIES, CITY OF ORRVILLE, OHIO | ORRVILLE, Wayne, OH | Pass | State |
| 2021-09-30 | FORMICA CORPORATION - EVENDALE | CINCINNATI, Hamilton, OH | Pass | State |
| 2021-09-30 | MARKWEST OKLAHOMA GAS CO LLC / CUSTER STABILIZATION STATION | ARAPAHO, Custer, OK | Pass | State |
| 2021-09-30 | CONTINENTAL RESOURCES / COOLEY 2 25 24XHW | ALEX, Grady, OK | Pass | State |
| 2021-09-30 | CONTINENTAL RESOURCES / COOLEY 3 24 25 36XHW | ALEX, Grady, OK | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.