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 |
|---|---|---|---|---|
| 2021-10-13 | W&T OFFSHORE, INC. | MOBILE BAY, Mobile, AL | Pass | State |
| 2021-10-13 | ARCOSA LW BR, LLC | LIVINGSTON, Sumter, AL | Pass | State |
| 2021-10-13 | ARCOSA LW BR, LLC | LIVINGSTON, Sumter, AL | Pass | State |
| 2021-10-13 | ARCOSA LW BR, LLC | LIVINGSTON, Sumter, AL | Pass | State |
| 2021-10-13 | RAZORBACK GATHERING COMPANY, LLC. - PEAR TREE CPF 1 | PANGBURN, White, AR | Pass | State |
| 2021-10-13 | AMERESCO SANTA CRUZ ENERGY LLC | WATSONVILLE, Santa Cruz, CA | Pass | Local |
| 2021-10-13 | NORTHROP GRUMMAN SYSTEMS CORP | EL SEGUNDO, Los Angeles, CA | Pass | Local |
| 2021-10-13 | CANYON POWER PLANT | ANAHEIM, Orange, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-10-13 | FOSTER FOOD PRODUCTS — high-priority violation on file | LIVINGSTON, Merced, CA | Pass | Local |
| 2021-10-13 | FOSTER FOOD PRODUCTS — high-priority violation on file | LIVINGSTON, Merced, CA | Pass | Local |
| 2021-10-13 | FOSTER FOOD PRODUCTS — high-priority violation on file | LIVINGSTON, Merced, CA | Pass | Local |
| 2021-10-13 | COLORADO SPRINGS UTILITIES - NIXON PLT | FOUNTAIN AREA, El Paso, CO | Pass | State |
| 2021-10-13 | WES DJ FT LUPTON/PLATTE VALLEY/LANCASTER — high-priority violation on file | FORT LUPTON, Weld, CO | Pass | State |
| 2021-10-13 | TPSI TERMINALS LLC | FORT LAUDERDALE, Broward, FL | Pass | State |
| 2021-10-13 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-13 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-13 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-13 | GEORGIA POWER CO. - PLANT MCDONOUGH- ATKINSON | ATLANTA, Cobb, GA | Pass | State |
| 2021-10-13 | BIMBO BAKERIES USA, INC. | DECATUR, DeKalb, GA | Pass | State |
| 2021-10-13 | MARTA - LAREDO DRIVE CNG STATION | DECATUR, DeKalb, GA | Pass | State |
| 2021-10-13 | MARTA - LAREDO DRIVE CNG STATION | DECATUR, DeKalb, GA | Pass | State |
| 2021-10-13 | TIPTON MUNICIPAL UTILITIES | TIPTON (HISTORICAL), Cedar, IA | Pass | State |
| 2021-10-13 | VALERO RENEWABLE FUELS CO LLC-HARTLEY — high-priority violation on file | HARTLEY, O'Brien, IA | Pass | State |
| 2021-10-13 | VALERO RENEWABLE FUELS CO LLC-HARTLEY — high-priority violation on file | HARTLEY, O'Brien, IA | Pass | State |
| 2021-10-13 | IOWA RENEWABLE ENERGY LLC | WASHINGTON, Washington, IA | Pass | State |
| 2021-10-13 | ADM CORN PROCESSING | CEDAR RAPIDS, Linn, IA | Pass | Local |
| 2021-10-13 | SAINT LUKE'S REGIONAL MEDICAL CENTER | BOISE, Ada, ID | Fail | State |
| 2021-10-13 | SAINT LUKE'S REGIONAL MEDICAL CENTER | BOISE, Ada, ID | Fail | State |
| 2021-10-13 | CUMMINS-ALLISON CORP | MT PROSPECT, Cook, IL | Pass | State |
| 2021-10-13 | BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file | MORRISTOWN, Shelby, IN | Pass | State |
| 2021-10-13 | BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file | MORRISTOWN, Shelby, IN | Pass | State |
| 2021-10-13 | BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file | MORRISTOWN, Shelby, IN | Pass | State |
| 2021-10-13 | BUNGE NORTH AMERICA (EAST), LLC — high-priority violation on file | MORRISTOWN, Shelby, IN | Pass | State |
| 2021-10-13 | STRYTEN SALINA, LLC (AIR) | SALINA, Saline, KS | Pass | State |
| 2021-10-13 | BIG RIVERS ELECTRIC CORP - RD GREEN STATION | ROBARDS, Webster, KY | Pass | State |
| 2021-10-13 | METTIKI COAL, LLC | OAKLAND, Garrett, MD | Pass | State |
| 2021-10-13 | LEWISTON-AUBURN WATER POLLUTION CONTROL AUTHORITY | LEWISTON, Androscoggin, ME | Pass | State |
| 2021-10-13 | LEWISTON-AUBURN WATER POLLUTION CONTROL AUTHORITY | LEWISTON, Androscoggin, ME | Pass | State |
| 2021-10-13 | NORTHERN BORDER PIPELINE - COMPRESSOR 13 | TRIMONT, Martin, MN | Pass | State |
| 2021-10-13 | UNITED TACONITE LLC - FAIRLANE PLANT | FORBES, St. Louis, MN | Pass | State |
| 2021-10-13 | LEHMAN ROBERTS, PLANT 1 | WINONA, Montgomery, MS | Pass | State |
| 2021-10-13 | BWI ETN LLC - NORTH WILKESBORO QUARRY | NORTH WILKESBORO, Wilkes, NC | Pass | State |
| 2021-10-13 | WBI ENERGY TRANSMISSION, INC. - CHARBONNEAU COMPRESSOR STATION - AQ | CARTWRIGHT, McKenzie, ND | Pass | State |
| 2021-10-13 | WBI ENERGY TRANSMISSION, INC. - CHARBONNEAU COMPRESSOR STATION - AQ | CARTWRIGHT, McKenzie, ND | Pass | State |
| 2021-10-13 | WBI ENERGY TRANSMISSION, INC. - CHARBONNEAU COMPRESSOR STATION - AQ | CARTWRIGHT, McKenzie, ND | Pass | State |
| 2021-10-13 | CHIEF ETHANOL FUELS INC | HASTINGS, Adams, NE | N/A | State |
| 2021-10-13 | OPPD NEBRASKA CITY STATION | NEBRASKA CITY, Otoe, NE | N/A | State |
| 2021-10-13 | US ARMY PICATINNY ARSENAL — high-priority violation on file | PICATINNY ARSENAL, Morris, NJ | Fail | State |
| 2021-10-13 | MARK WEST - BELL LAKE SOUTH COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-10-13 | MARK WEST - BELL LAKE SOUTH COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-10-13 | WOOL HEAD PAD A BATTERY | MONUMENT, Lea, NM | Pass | State |
| 2021-10-13 | GOLD QUARRY OPERATIONS — high-priority violation on file | CARLIN, Eureka, NV | Incomplete | State |
| 2021-10-13 | GLOBAL COMPANIES LLC - ALBANY TERMINAL | ALBANY, Albany, NY | Pass | State |
| 2021-10-13 | QUAKER CITY CASTINGS | SALEM, Columbiana, OH | Pass | State |
| 2021-10-13 | QUAKER CITY CASTINGS | SALEM, Columbiana, OH | Pass | State |
| 2021-10-13 | GERKEN MATERIAL, INC. PLANT #5 | OTTAWA, Putnam, OH | Pass | State |
| 2021-10-13 | ASCENT RESOURCES - UTICA LLC - COLLINS WYN JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2021-10-13 | ASCENT RESOURCES - UTICA LLC - COLLINS WYN JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2021-10-13 | ASCENT RESOURCES - UTICA LLC - COLLINS WYN JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2021-10-13 | MIDDLETOWN COKE COMPANY, LLC — high-priority violation on file | MIDDLETOWN, Butler, OH | Pass | State |
| 2021-10-13 | BARRETT PAVING - NEWTOWN ASPHALT | NEWTOWN, Hamilton, OH | Pass | State |
| 2021-10-13 | ET GATHERING PROCESSING LLC / COTTONWOOD COMPRESSOR STATION | LAMBERT, Alfalfa, OK | Pass | State |
| 2021-10-13 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2021-10-13 | MARKWEST OKLAHOMA GAS CO LLC / WEST RELAY COMPESSOR STATION | HORNTOWN, Hughes, OK | Pass | State |
| 2021-10-13 | MARKWEST OKLAHOMA GAS CO LLC / ALPHA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-10-13 | MARKWEST OKLAHOMA GAS CO LLC / ALPHA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-10-13 | MTN GATHERING LLC/DRY RUN COMP STA | CHAPMAN, Clinton, PA | Pass | State |
| 2021-10-13 | PA GEN ENERGY CO LLC/FISK HOLLOW PAD A | ROULETTE, Potter, PA | Pass | State |
| 2021-10-13 | COTERRA ENERGY INC/LAMBERT R PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2021-10-13 | ALLEGHENY CNTY SANI AUTH/ALLEGHENY CNTY | PITTSBURGH, Allegheny, PA | Pass | Local |
| 2021-10-13 | SI GROUP INC ORANGEBURG | ORANGEBURG, Orangeburg, SC | Pass | State |
| 2021-10-13 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-13 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-13 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-13 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-13 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-13 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-13 | CHEVRON PHILLIPS CHEMICAL PORT ARTHUR FACILITY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-13 | CHEVRON PHILLIPS CHEMICAL PORT ARTHUR FACILITY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-10-13 | NACOGDOCHES GENERATING FACILITY | CUSHING, Nacogdoches, TX | Fail | State |
| 2021-10-13 | COTTONWOOD ENERGY PROJECT | DEWEYVILLE, Newton, TX | Pass | State |
| 2021-10-13 | USG PAPER ORANGE MILL — high-priority violation on file | ORANGE, Orange, TX | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.