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 |
|---|---|---|---|---|
| 2024-09-17 | NORRIS QUARRIES LLC PLANT 81 (PORT-0512) | PORTABLE, Undetermined, MO | Pass | State |
| 2024-09-17 | CHEMOURS COMPANY - FAYETTEVILLE WORKS | FAYETTEVILLE, Bladen, NC | Pending | State |
| 2024-09-17 | CHEMOURS COMPANY - FAYETTEVILLE WORKS | FAYETTEVILLE, Bladen, NC | Pending | State |
| 2024-09-17 | ONEOK ROCKIES MIDSTREAM, L.L.C. - ALEXANDER COMPRESSOR STATION | ALEXANDER, McKenzie, ND | Pass | State |
| 2024-09-17 | ENVIRONMENTAL SOIL MANAGEMENT, INC. | LOUDON, Merrimack, NH | Pass | State |
| 2024-09-17 | PLANTVIEW COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-09-17 | LARIAT COMPRESSOR STATION — high-priority violation on file | MALJAMAR, Lea, NM | Pass | State |
| 2024-09-17 | ENERGY TRANSFER COMPANY - DOMINATOR COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-09-17 | ENERGY TRANSFER COMPANY - DOMINATOR COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-09-17 | RICO COMPRESSOR STATION | MALAGA, Lea, NM | Pass | State |
| 2024-09-17 | BONNYMAN COMPRESSOR STATION | LOVING, Lea, NM | Pass | State |
| 2024-09-17 | BONNYMAN COMPRESSOR STATION | LOVING, Lea, NM | Pass | State |
| 2024-09-17 | EOG - ANACONDA LGL STATION | JAL, Lea, NM | Pass | State |
| 2024-09-17 | EOG - ANACONDA LGL STATION | JAL, Lea, NM | Pass | State |
| 2024-09-17 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE - STATION 214 | CARROLLTON, Carroll, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | MARKWEST MORRISTOWN COMPRESSOR STATION | BETHESDA, Belmont, OH | Pass | State |
| 2024-09-17 | BLUE RACER MIDSTREAM LLC - HFS#1 (CADIZ B) | CADIZ, Harrison, OH | Pass | State |
| 2024-09-17 | BLUE RACER MIDSTREAM LLC - HFS#1 (CADIZ B) | CADIZ, Harrison, OH | Pass | State |
| 2024-09-17 | BLUE RACER MIDSTREAM LLC - HFS#1 (CADIZ B) | CADIZ, Harrison, OH | Pass | State |
| 2024-09-17 | ASCENT RESOURCES - UTICA LLC - ROXY CRC JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2024-09-17 | ASCENT RESOURCES - UTICA LLC - ROXY CRC JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2024-09-17 | ASCENT RESOURCES - UTICA LLC - ROXY CRC JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2024-09-17 | ASCENT RESOURCES - UTICA LLC - OMAITS SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2024-09-17 | ASCENT RESOURCES - UTICA LLC - OMAITS SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2024-09-17 | ASCENT RESOURCES - UTICA LLC - OMAITS SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2024-09-17 | EQM OLYMPUS MIDSTREAM, LLC - SWITZ 27 CS | CLARINGTON, Monroe, OH | Pass | State |
| 2024-09-17 | EQM OLYMPUS MIDSTREAM, LLC - SWITZ 27 CS | CLARINGTON, Monroe, OH | Pass | State |
| 2024-09-17 | EQM OLYMPUS MIDSTREAM, LLC - SWITZ 27 CS | CLARINGTON, Monroe, OH | Pass | State |
| 2024-09-17 | ET GATHERING PROCESSING LLC / HYDRO COMPRESSOR STATION | HYDRO, Blaine, OK | Pass | State |
| 2024-09-17 | UNIT PETROLEUM CO / FULLBRIGHT 1 1 | GRACEMONT, Caddo, OK | Pass | State |
| 2024-09-17 | COTERRA ENERGY OPERATING CO / GATZ 1H 3019X BAUSTERT 1H 2920X | UNION CITY, Canadian, OK | Pass | State |
| 2024-09-17 | MUSTANG GAS PRODUCTS LLC / COVINGTON COMPRESSOR STATION | COVINGTON, Garfield, OK | Pass | State |
| 2024-09-17 | ONEOK FIELD SERVICES CO LLC / WEST DURHAM COMPRESSOR STATION | CRAWFORD, Roger Mills, OK | Pass | State |
| 2024-09-17 | TENNESSEE GAS PIPELINE CO/315 WELLSBORO | WELLSBORO, Tioga, PA | Pass | State |
| 2024-09-17 | KEYSTONE PORTLAND CEMENT/EAST ALLEN — high-priority violation on file | BATH, Northampton, PA | Pass | State |
| 2024-09-17 | NFG MIDSTREAM COVINGTON LLC/CLARK COMP STA | MAINESBURG, Tioga, PA | Pass | State |
| 2024-09-17 | EXPAND OPERATING LLC/RU-46 DROPP WELLPAD | SUSQUEHANNA, Susquehanna, PA | Pass | State |
| 2024-09-17 | TEAGUE SWEET AND SOUR COMPRESSOR STATION | TEAGUE, Freestone, TX | Pass | State |
| 2024-09-17 | NAVAL BASE KITSAP AT BREMERTON | BREMERTON, Kitsap, WA | Pass | Local |
| 2024-09-17 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Pass | State |
| 2024-09-17 | WAUPACA FOUNDRY INC - PLANT 1 | WAUPACA, Waushara, WI | Pass | State |
| 2024-09-17 | WAUPACA FOUNDRY INC - PLANT 2 & 3 | WAUPACA, Waushara, WI | Pass | State |
| 2024-09-17 | ARMSTRONG WORLD INDUSTRIES, INC., MILLWOOD | MILLWOOD, Jackson, WV | Pass | State |
| 2024-09-17 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | GILLETTE, Campbell, WY | Pass | State |
| 2024-09-17 | NEIL SIMPSON COMPLEX (BLACK HILLS CORPORATION) | GILLETTE, Campbell, WY | Pass | State |
| 2024-09-17 | GREEN RIVER SODA ASH PLANT (AMERICAN SODA LLC) | SWEETWATER COUNTY, Sweetwater, WY | Pass | State |
| 2024-09-16 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2024-09-16 | GLENDALE CITY, GLENDALE WATER & POWER | GLENDALE, Los Angeles, CA | Pass | Local |
| 2024-09-16 | GLENDALE CITY, GLENDALE WATER & POWER | GLENDALE, Los Angeles, CA | Pass | Local |
| 2024-09-16 | GLENDALE CITY, GLENDALE WATER & POWER | GLENDALE, Los Angeles, CA | Pass | Local |
| 2024-09-16 | CALPEAK POWER ENTERPRISE LLC | ESCONDIDO, San Diego, CA | Pending | Local |
| 2024-09-16 | IOWA FERTILIZER CO — high-priority violation on file | WEVER, Lee, IA | Pass | State |
| 2024-09-16 | ALLIED WASTE SERVICES - BENSON VALLEY LANDFILL | FRANKFORT, Franklin, KY | Pass | State |
| 2024-09-16 | TURNER 16-21-28 HC #1-ALT & #2-ALT TANK BATTERY - ELM GROVE FIELD | ELM GROVE, Bossier, LA | Pass | State |
| 2024-09-16 | TURNER 16-21-28 HC #1-ALT & #2-ALT TANK BATTERY - ELM GROVE FIELD | ELM GROVE, Bossier, LA | Pass | State |
| 2024-09-16 | MIYAMURA COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-16 | SCHLITZ CTB — high-priority violation on file | WHITES CITY, Eddy, NM | Pass | State |
| 2024-09-16 | REVEILLE COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-16 | PLANTVIEW COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2024-09-16 | RICO COMPRESSOR STATION | MALAGA, Lea, NM | Pass | State |
| 2024-09-16 | EOG - DENALI LOCAL GAS LIFT | JAL, Lea, NM | Pass | State |
| 2024-09-16 | EOG - DENALI LOCAL GAS LIFT | JAL, Lea, NM | Pass | State |
| 2024-09-16 | EOG - DENALI LOCAL GAS LIFT | JAL, Lea, NM | Pass | State |
| 2024-09-16 | EOG - DENALI LOCAL GAS LIFT | JAL, Lea, NM | Pass | State |
| 2024-09-16 | EOG - DENALI LOCAL GAS LIFT | JAL, Lea, NM | Pass | State |
| 2024-09-16 | EOG RESOURCES, INC. - KENNETH LLOYD 5-14-7 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2024-09-16 | EOG RESOURCES, INC. - KENNETH LLOYD 5-14-7 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2024-09-16 | EOG RESOURCES, INC. - KENNETH LLOYD 5-14-7 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2024-09-16 | TALL OAK WOODFORD LLC / PANTHER CREEK PROCESSING FACILITY | COALGATE, Coal, OK | Pass | State |
| 2024-09-16 | TALL OAK WOODFORD LLC / PANTHER CREEK PROCESSING FACILITY | COALGATE, Coal, OK | Pass | State |
| 2024-09-16 | TALL OAK WOODFORD LLC / PANTHER CREEK PROCESSING FACILITY | COALGATE, Coal, OK | Pass | State |
| 2024-09-16 | TALL OAK WOODFORD LLC / PANTHER CREEK PROCESSING FACILITY | COALGATE, Coal, OK | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.