EPA Air · stack tests by year
Air-emissions stack tests in 2023
- 26,911Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2023
- California 7,676
- Ohio 2,800
- Florida 1,589
- Indiana 1,487
- Oklahoma 1,420
- New Mexico 1,087
- Georgia 1,057
- Pennsylvania 889
- Alabama 689
- Wyoming 670
- Mississippi 625
- Arkansas 602
- Iowa 453
- Colorado 436
- Texas 395
- Missouri 328
- North Carolina 302
- Washington 283
- Wisconsin 251
- Michigan 229
- Minnesota 228
- Delaware 224
- South Carolina 222
- West Virginia 218
- Kentucky 210
- Tennessee 200
- Utah 196
- Montana 177
- Virginia 170
- North Dakota 157
- Illinois 152
- Nebraska 152
- Alaska 140
- Nevada 127
- New York 123
- Maine 111
- Connecticut 108
- Arizona 102
- Louisiana 77
- Idaho 77
- Hawaii 72
- New Hampshire 58
- New Jersey 56
- South Dakota 54
- Maryland 49
- Kansas 45
- Oregon 44
- District of Columbia 36
- Massachusetts 27
- Rhode Island 20
- Puerto Rico 6
- Vermont 5
Other years
Air-emissions stack tests recorded in 2023
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | MODESTO IRRIGATION DISTRICT | RIPON, San Joaquin, CA | Pass | Local |
| 2023-09-25 | WES DJ GATHERING - FREDERICK CS — high-priority violation on file | DACONO AREA, Weld, CO | Pass | State |
| 2023-09-25 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2023-09-25 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2023-09-25 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2023-09-25 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2023-09-25 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2023-09-25 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2023-09-25 | GREENLEAF CO2 SOLUTIONS LLC, WEST YELLOW CREEK COMPRESSOR STATION — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2023-09-25 | CANFOR SOUTHERN PINE - GRAHAM PLANT — high-priority violation on file | GRAHAM, Alamance, NC | Pass | State |
| 2023-09-25 | RALPH ROGERS AND COMPANY - HENDERSONVILLE PLANT | HENDERSONVILLE, Henderson, NC | Pass | State |
| 2023-09-25 | KAAPA ETHANOL RAVENNA LLC — high-priority violation on file | RAVENNA, Buffalo, NE | N/A | State |
| 2023-09-25 | CEDAR CANYON 28 COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2023-09-25 | MIYAMURA COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2023-09-25 | THISTLE COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-09-25 | VANDELAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2023-09-25 | EOG RESOURCES, INC. - ADDY 9-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-09-25 | EOG RESOURCES, INC. - ADDY 9-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-09-25 | EOG RESOURCES, INC. - ADDY 9-12-6 PAD | SCIO, Harrison, OH | Pass | State |
| 2023-09-25 | CONTINENTAL RESOURCES / GAPSTOW 1 24 13 14XHM 7 24 14XHW | RATLIFF CITY, Carter, OK | Pass | State |
| 2023-09-25 | BCE MACH III LLC / LNU 15 6HO 41 3HO PAD | DOVER, Kingfisher, OK | Pass | State |
| 2023-09-25 | BCE MACH III LLC / LSEOU 94 2HO LSEOU 94 3HO LSEOU 95 3HO | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-09-25 | MARKWEST OKLAHOMA GAS CO LLC / SHERMAN ELLIS COMPRESSOR STATION | HAYWOOD, Pittsburg, OK | Pass | State |
| 2023-09-25 | PEOPLES ELECTRIC COOP / MARKWEST | STUART, Pittsburg, OK | Pass | State |
| 2023-09-25 | PONDEROSA GATHERING LLC / PONDEROSA COMPRESSOR STATION 4 | QUINTON, Pittsburg, OK | Pass | State |
| 2023-09-25 | PONDEROSA GATHERING LLC / PONDEROSA COMPRESSOR STATION 4 | QUINTON, Pittsburg, OK | Pass | State |
| 2023-09-25 | PONDEROSA GATHERING LLC / PONDEROSA COMPRESSOR STATION 4 | QUINTON, Pittsburg, OK | Pass | State |
| 2023-09-25 | WILLIAMS FIELD SVC CO LLC/CENTRAL COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2023-09-25 | ARDAGH GLASS INC. | SEATTLE, King, WA | Pass | Local |
| 2023-09-25 | APPALACHIA MIDSTREAM SERVICES, L.L.C., THREEDUBS STATION | WELLSBURG, Brooke, WV | Pass | State |
| 2023-09-25 | CHAIN LAKES I5 35 4H-8H PAD (CROWHEART ENERGY, LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-25 | CHAIN LAKES I5 35 4H-8H PAD (CROWHEART ENERGY, LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-25 | CHAIN LAKES I5 35 4H-8H PAD (CROWHEART ENERGY, LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-25 | CHAIN LAKES I5 35 4H-8H PAD (CROWHEART ENERGY, LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2023-09-23 | LIBERTY RECYCLING, INC. | TUSCALOOSA, Tuscaloosa, AL | Pass | State |
| 2023-09-23 | MISSION CREEK OPCO, LLC - DORCHEAT GAS PLANT | MAGNOLIA, Columbia, AR | Pass | State |
| 2023-09-23 | MISSION CREEK OPCO, LLC - DORCHEAT GAS PLANT | MAGNOLIA, Columbia, AR | Pass | State |
| 2023-09-23 | ULTRAMAR INC | WILMINGTON, Los Angeles, CA | Pass | Local |
| 2023-09-23 | DENVER REGIONAL/FRONT RANGE LANDFILL — high-priority violation on file | ERIE AREA, Weld, CO | Pass | State |
| 2023-09-23 | APAC MISSISSIPPI INC, DURANT ASPHALT PLANT | DURANT, Holmes, MS | Pass | State |
| 2023-09-23 | APAC MISSISSIPPI INC, DURANT ASPHALT PLANT | DURANT, Holmes, MS | Pass | State |
| 2023-09-22 | MICROSOFT CORP - OLIVE AVE | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2023-09-22 | ULTRAMAR INC | WILMINGTON, Los Angeles, CA | Pass | Local |
| 2023-09-22 | MARTIN LUTHER KING JR MEDICAL CAMPUS | LOS ANGELES, Los Angeles, CA | Pass | Local |
| 2023-09-22 | MARTIN LUTHER KING JR MEDICAL CAMPUS | LOS ANGELES, Los Angeles, CA | Pass | Local |
| 2023-09-22 | MARTIN LUTHER KING JR MEDICAL CAMPUS | LOS ANGELES, Los Angeles, CA | Pass | Local |
| 2023-09-22 | MARTIN LUTHER KING JR MEDICAL CAMPUS | LOS ANGELES, Los Angeles, CA | Pass | Local |
| 2023-09-22 | SNOW SUMMIT LLC | BIG BEAR LAKE, San Bernardino, CA | Fail | Local |
| 2023-09-22 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-22 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-22 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-22 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-22 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-22 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-22 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-22 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-22 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-22 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2023-09-22 | WES DJ GAS PROC - WATTENBERG PLANT | AURORA, Adams, CO | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.