EPA Air · stack tests by year
Air-emissions stack tests in 2024
- 39,252Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2024
- California 18,905
- Ohio 2,721
- Oklahoma 1,804
- Indiana 1,704
- New Mexico 1,428
- Florida 1,427
- Wyoming 1,285
- Georgia 1,104
- Pennsylvania 905
- Alabama 721
- Arkansas 569
- Missouri 539
- Iowa 464
- Mississippi 437
- Colorado 400
- Washington 338
- Texas 271
- Wisconsin 269
- North Carolina 254
- Minnesota 250
- West Virginia 230
- South Carolina 223
- Kentucky 218
- Delaware 185
- Montana 180
- Michigan 159
- Virginia 159
- Alaska 158
- Utah 157
- Tennessee 155
- Nebraska 150
- North Dakota 138
- Arizona 126
- Connecticut 122
- New York 115
- Maine 114
- Louisiana 113
- Illinois 109
- Idaho 91
- Nevada 88
- Hawaii 67
- Kansas 64
- New Hampshire 61
- South Dakota 59
- Maryland 58
- Massachusetts 52
- Oregon 35
- Rhode Island 29
- District of Columbia 25
- New Jersey 8
- Puerto Rico 5
- Vermont 4
Other years
Air-emissions stack tests recorded in 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-09-09 | STEPHENS INDUSTRIES LLC | COLLEGE PARK, Clayton, GA | Pass | State |
| 2024-09-09 | STEPHENS INDUSTRIES LLC | COLLEGE PARK, Clayton, GA | Pass | State |
| 2024-09-09 | STEPHENS INDUSTRIES LLC | COLLEGE PARK, Clayton, GA | Pass | State |
| 2024-09-09 | STEPHENS INDUSTRIES LLC | COLLEGE PARK, Clayton, GA | Pass | State |
| 2024-09-09 | STEPHENS INDUSTRIES LLC | COLLEGE PARK, Clayton, GA | Pass | State |
| 2024-09-09 | STEPHENS INDUSTRIES LLC | COLLEGE PARK, Clayton, GA | Pass | State |
| 2024-09-09 | STEPHENS INDUSTRIES LLC | COLLEGE PARK, Clayton, GA | Pass | State |
| 2024-09-09 | STEPHENS INDUSTRIES LLC | COLLEGE PARK, Clayton, GA | Pass | State |
| 2024-09-09 | MCINTOSH COMBUSTION TURBINE - ELECTRIC GENERATING PLANT | RINCON, Effingham, GA | Pass | State |
| 2024-09-09 | MCINTOSH COMBUSTION TURBINE - ELECTRIC GENERATING PLANT | RINCON, Effingham, GA | Pass | State |
| 2024-09-09 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2024-09-09 | GENERAL MOTORS LLC DETROIT-HAMTRAMCK ASSEMBLY | DETROIT, Wayne, MI | Pass | State |
| 2024-09-09 | WM MUELLER & SONS INC | HAMBURG, Carver, MN | Pass | State |
| 2024-09-09 | MOM BRANDS | NORTHFIELD, Rice, MN | N/A | State |
| 2024-09-09 | UNITED STATES STEEL CORP - KEETAC | KEEWATIN, St. Louis, MN | Pass | State |
| 2024-09-09 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2024-09-09 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2024-09-09 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2024-09-09 | FLEXCON COMPANY INC | COLUMBUS, Platte, NE | Fail | State |
| 2024-09-09 | MAVERICK COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-09 | MAVERICK COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-09 | WILMA CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2024-09-09 | WILMA CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2024-09-09 | WILMA CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2024-09-09 | THISTLE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-09-09 | SEVERUS COMPRESSOR STATION | MONUMENT, Lea, NM | Pass | State |
| 2024-09-09 | SEVERUS COMPRESSOR STATION | MONUMENT, Lea, NM | Pass | State |
| 2024-09-09 | EOG - BOA LOCALIZED GAS LIFT STATION | JAL, Lea, NM | Pass | State |
| 2024-09-09 | EOG - BOA LOCALIZED GAS LIFT STATION | JAL, Lea, NM | Pass | State |
| 2024-09-09 | EOG - BOA LOCALIZED GAS LIFT STATION | JAL, Lea, NM | Pass | State |
| 2024-09-09 | VANDELAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-09-09 | PONY EXPRESS FED WEST TB | MONUMENT, Lea, NM | Pass | State |
| 2024-09-09 | PONY EXPRESS FED EAST TB | MALJAMAR, Lea, NM | Pass | State |
| 2024-09-09 | WHEELABRATOR HUDSON FALLS | KINGSBURY, Washington, NY | Pass | State |
| 2024-09-09 | MARKWEST OKLAHOMA GAS CO LLC / SHERMAN ELLIS COMPRESSOR STATION | HAYWOOD, Pittsburg, OK | Pass | State |
| 2024-09-09 | DCP OPERATING CO LP / CROSSROADS COMPRESSOR STATION | MARLOW, Stephens, OK | Pass | State |
| 2024-09-09 | MILAN ENERGY LLC/ELECTRIC GENERATING STATION | MILAN, Bradford, PA | Pass | State |
| 2024-09-09 | BOEING DEVELOPMENTAL CENTER | TUKWILA, King, WA | Pass | Local |
| 2024-09-09 | BOEING DEVELOPMENTAL CENTER | TUKWILA, King, WA | Pass | Local |
| 2024-09-09 | PROCTER & GAMBLE PAPER PRODUCTS CO | GREEN BAY, Brown, WI | Pass | State |
| 2024-09-09 | WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file | OAK CREEK, Monroe, WI | Pass | State |
| 2024-09-09 | WE ENERGIES-OAK CREEK POWER PLANT — high-priority violation on file | OAK CREEK, Monroe, WI | Pass | State |
| 2024-09-09 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-09-09 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-09-09 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-09-09 | LEAVITT COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2024-09-09 | CHEYENNE PRAIRIE GENERATING STATION (CHEYENNE LIGHT FUEL & POWER) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-09-09 | CHEYENNE PRAIRIE GENERATING STATION (CHEYENNE LIGHT FUEL & POWER) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-09-08 | WATERBURY GENERATION, LLC | WATERBURY, New Haven, CT | Pass | State |
| 2024-09-08 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-08 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-07 | COLASKA INC, DBA QAP / CMI PTD 300 DRUM MIX ASPHALT PLANT | ALASKA, Undetermined, AK | Pass | State |
| 2024-09-07 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-07 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-07 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-07 | RIPPLE COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-06 | BONANZA POWER PLANT | BONANZA, Uintah, UT | Pass | U.S. EPA |
| 2024-09-06 | BOISE WHITE PAPER LLC | JACKSON, Clarke, AL | Pass | State |
| 2024-09-06 | BOISE WHITE PAPER LLC | JACKSON, Clarke, AL | Pass | State |
| 2024-09-06 | BOISE WHITE PAPER LLC | JACKSON, Clarke, AL | Pass | State |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | BONANZA CREEK - STATE NORTH PLATTE T-36 | KERSEY 8.3 MI. E OF, Weld, CO | Pass | State |
| 2024-09-06 | BONANZA CREEK - STATE NORTH PLATTE T-36 | KERSEY 8.3 MI. E OF, Weld, CO | Pass | State |
| 2024-09-06 | BONANZA CREEK - STATE NORTH PLATTE T-36 | KERSEY 8.3 MI. E OF, Weld, CO | Pass | State |
| 2024-09-06 | JOHNSON MATTHEY PROCESS TECHNOLOGIES, INC | SAVANNAH, Chatham, GA | Pass | State |
| 2024-09-06 | JOHNSON MATTHEY PROCESS TECHNOLOGIES, INC | SAVANNAH, Chatham, GA | Pass | State |
| 2024-09-06 | JOHNSON MATTHEY PROCESS TECHNOLOGIES, INC | SAVANNAH, Chatham, GA | Pass | State |
| 2024-09-06 | MCINTOSH COMBUSTION TURBINE - ELECTRIC GENERATING PLANT | RINCON, Effingham, GA | Pass | State |
| 2024-09-06 | MCINTOSH COMBUSTION TURBINE - ELECTRIC GENERATING PLANT | RINCON, Effingham, GA | Pass | State |
| 2024-09-06 | AOC LLC | VALPARAISO, Porter, IN | Pass | State |
| 2024-09-06 | ROCKY MOUNTAIN POWER | HARDIN, Big Horn, MT | Fail | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.