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 |
|---|---|---|---|---|
| 2024-10-03 | NLMK INDIANA — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2024-10-03 | NLMK INDIANA — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2024-10-03 | NLMK INDIANA — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2024-10-03 | NLMK INDIANA — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2024-10-03 | NLMK INDIANA — high-priority violation on file | PORTAGE, Porter, IN | Pass | State |
| 2024-10-03 | HARSHMAN CONSTRUCTION - FALL RIVER (AIR) | FALL RIVER, Greenwood, KS | Pass | State |
| 2024-10-03 | HARCROS CHEMICALS - KANSAS CITY (AIR) | KANSAS CITY, Wyandotte, KS | Pass | State |
| 2024-10-03 | SHELL CHEMICAL LP - NORCO CHEMICAL PLANT - EAST SITE | NORCO, St. Charles, LA | Pass | State |
| 2024-10-03 | ECO MAINE | PORTLAND, Cumberland, ME | Pass | State |
| 2024-10-03 | GREDE LLC - SAINT CLOUD | SAINT CLOUD, Benton, MN | N/A | State |
| 2024-10-03 | MATHY CONSTRUCTION CO - PLANT 47 | ONALASKA, Undetermined, WI | Pass | State |
| 2024-10-03 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2024-10-03 | CLARIOS, LLC | SAINT JOSEPH, Buchanan, MO | Pass | State |
| 2024-10-03 | THE LIFELINE GROUP — high-priority violation on file | SAINT JOSEPH, Buchanan, MO | Fail | State |
| 2024-10-03 | THE LIFELINE GROUP — high-priority violation on file | SAINT JOSEPH, Buchanan, MO | N/A | State |
| 2024-10-03 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2024-10-03 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2024-10-03 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC - STATION 160 | REIDSVILLE, Rockingham, NC | Pass | State |
| 2024-10-03 | TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC - STATION 160 | REIDSVILLE, Rockingham, NC | Pass | State |
| 2024-10-03 | GREEN PLAINS WOOD RIVER LLC — high-priority violation on file | WOOD RIVER, Hall, NE | N/A | State |
| 2024-10-03 | ROSS DRAW COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-10-03 | ROSS DRAW COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-10-03 | ASTRODOG PAD S | MALAGA, Eddy, NM | Pass | State |
| 2024-10-03 | GEORGIA PACIFIC GYPSUM, LLC | LAS VEGAS, Clark, NV | Pass | Local |
| 2024-10-03 | COMMONWEALTH PLYWOOD INC | WHITEHALL, Washington, NY | Fail | State |
| 2024-10-03 | HOOSIER MAGNETICS INC | OGDENSBURG, St. Lawrence, NY | Pass | State |
| 2024-10-03 | ANOMATIC CORP | NEWARK, Licking, OH | Pass | State |
| 2024-10-03 | ANOMATIC CORP | NEWARK, Licking, OH | Pass | State |
| 2024-10-03 | ANOMATIC CORP | NEWARK, Licking, OH | Pass | State |
| 2024-10-03 | ANOMATIC CORP | NEWARK, Licking, OH | Pass | State |
| 2024-10-03 | ANOMATIC CORP | NEWARK, Licking, OH | Pass | State |
| 2024-10-03 | ANOMATIC CORP | NEWARK, Licking, OH | Pass | State |
| 2024-10-03 | ANOMATIC CORP | NEWARK, Licking, OH | Pass | State |
| 2024-10-03 | ANOMATIC CORP | NEWARK, Licking, OH | Pass | State |
| 2024-10-03 | FIRST SOLAR INC. | WALBRIDGE, Wood, OH | Fail | State |
| 2024-10-03 | PEAVINE PAD 952737 | SARDIS, Monroe, OH | Pass | State |
| 2024-10-03 | PEAVINE PAD 952737 | SARDIS, Monroe, OH | Pass | State |
| 2024-10-03 | PEAVINE PAD 952737 | SARDIS, Monroe, OH | Pass | State |
| 2024-10-03 | PEAVINE PAD 952737 | SARDIS, Monroe, OH | Pass | State |
| 2024-10-03 | CLEVELAND-CLIFFS STEEL CORPORATION — high-priority violation on file | MIDDLETOWN, Butler, OH | Pass | State |
| 2024-10-03 | DEVON ENERGY PRODUCTION CO LP / RHINO 8 5 14N 9W 1HX | CALUMET, Canadian, OK | Pass | State |
| 2024-10-03 | MARKWEST OKLAHOMA GAS CO LLC / HELEN MEIER COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2024-10-03 | MARKWEST OKLAHOMA GAS CO LLC / SIGMA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2024-10-03 | BCE MACH LLC / LONE RANGER 28 33 S3H S4H BRIAN 27 34 | ALMA, Stephens, OK | Pass | State |
| 2024-10-03 | BCE MACH LLC / LONE RANGER 28 33 S1H S2H | ALMA, Stephens, OK | Pass | State |
| 2024-10-03 | TERRA INTL OKLAHOMA LLC / WOODWARD COMPLEX | WOODWARD, Woodward, OK | Pass | State |
| 2024-10-03 | FAIRMAN CORP/BIG RUN COMP STA | PUNXSUTAWNEY, Jefferson, PA | Pass | State |
| 2024-10-03 | PEPPERIDGE FARM INC/EAST COCALICO TWP PLT | DENVER, Lancaster, PA | Pass | State |
| 2024-10-03 | WALTER R EARLE ASPHALT PLT/MORRISVILLE — high-priority violation on file | MORRISVILLE, Bucks, PA | Pending | State |
| 2024-10-03 | INGENCO WHOLESALE POWER LLC/PINE GROVE TWP | PINE GROVE, Schuylkill, PA | Pass | State |
| 2024-10-03 | US GYPSUM CO/WASHINGTONVILLE PLT — high-priority violation on file | DANVILLE, Montour, PA | Pass | State |
| 2024-10-03 | TENASKA PA PARTNERS/WESTMORELAND GEN FAC — high-priority violation on file | SMITHTON, Westmoreland, PA | Pass | State |
| 2024-10-03 | MARKWEST LIBERTY MIDSTREAM/SMITH COMP STA | BURGETTSTOWN, Washington, PA | Pass | State |
| 2024-10-03 | NEW-INDY CATAWBA LLC | CATAWBA, York, SC | Pass | State |
| 2024-10-03 | AGTEGRA COOPERATIVE - CRAVEN | IPSWICH, Edmunds, SD | Pass | State |
| 2024-10-03 | NGK METALS CORPORATION | SWEETWATER, Monroe, TN | Pass | State |
| 2024-10-03 | H L MOONEY WATER RECLAMATION FACILITY | WOODBRIDGE, Prince William, VA | Pass | State |
| 2024-10-03 | SI NVA02D, LLC | MANASSAS, Prince William, VA | Pass | State |
| 2024-10-03 | COVENTRY CLEAN ENERGY CORPORATION — high-priority violation on file | COVENTRY, Orleans, VT | Pass | State |
| 2024-10-03 | POST POINT WWTP SEWAGE SLUDGE INCINERATOR — high-priority violation on file | WHATCOM COUNTY, Whatcom, WA | Pass | Local |
| 2024-10-03 | CAPITAL POWER CORPORATION | TACOMA, Pierce, WA | Pass | Local |
| 2024-10-03 | CAPITAL POWER CORPORATION | TACOMA, Pierce, WA | Pass | Local |
| 2024-10-03 | CAPITAL POWER CORPORATION | TACOMA, Pierce, WA | Pass | Local |
| 2024-10-03 | CAPITAL POWER CORPORATION | TACOMA, Pierce, WA | Pass | Local |
| 2024-10-03 | QUAD/GRAPHICS INC - HARTFORD | HARTFORD, Dodge, WI | Pass | State |
| 2024-10-03 | FLETCHER/TERHUNE (POWDER RIVER MIDSTREAM, LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2024-10-03 | FLETCHER/TERHUNE (POWDER RIVER MIDSTREAM, LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2024-10-03 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-03 | MICROSOFT CHEYENNE DATA CENTER (MICROSOFT CORPORATION) | CHEYENNE, Laramie, WY | Pass | State |
| 2024-10-02 | HILCORP ALASKA, LLC / CENTRAL COMPRESSOR PLANT (CCP) | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2024-10-02 | HILCORP ALASKA, LLC / CENTRAL COMPRESSOR PLANT (CCP) | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2024-10-02 | PEAK RENEWABLES BIOENERGY (DOTHAN) LLC | DOTHAN, Houston, AL | Pass | State |
| 2024-10-02 | ENABLE MISSISSIPPI RIVER TRANSMISSION, LLC - CARLISLE COMPRESSOR STATION | CARLISLE, Lonoke, AR | Pass | State |
| 2024-10-02 | ENABLE MISSISSIPPI RIVER TRANSMISSION, LLC - CARLISLE COMPRESSOR STATION | CARLISLE, Lonoke, AR | Pass | State |
| 2024-10-02 | SO CAL GAS CO | VALENCIA, Los Angeles, CA | Pass | Local |
| 2024-10-02 | CAMPOS BROTHERS | CARUTHERS, Fresno, CA | Pass | Local |
| 2024-10-02 | CAMPOS BROTHERS | CARUTHERS, Fresno, CA | Pass | Local |
| 2024-10-02 | CAMPOS BROTHERS | CARUTHERS, Fresno, CA | Pass | Local |
| 2024-10-02 | CAMPOS BROTHERS | CARUTHERS, Fresno, CA | Pass | Local |
| 2024-10-02 | EF OXNARD LLC | OXNARD, Ventura, CA | Pass | Local |
| 2024-10-02 | DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file | KEENESBURG 5.2 MI. N OF, Weld, CO | Pass | State |
| 2024-10-02 | DCP OPERATING CO - ENTERPRISE C.S. — high-priority violation on file | KEENESBURG 5.2 MI. N OF, Weld, CO | Pass | State |
| 2024-10-02 | REWORLD CONNECTICUT COMPANY — high-priority violation on file | PRESTON, New London, CT | Pass | State |
| 2024-10-02 | REWORLD CONNECTICUT COMPANY — high-priority violation on file | PRESTON, New London, CT | Pass | State |
| 2024-10-02 | FLORIDA GAS TRANSMISSION COMPANY, LLC | WEST MELBOURNE, Brevard, FL | Pass | State |
| 2024-10-02 | FLORIDA GAS TRANSMISSION COMPANY, LLC | WEST MELBOURNE, Brevard, FL | Pass | State |
| 2024-10-02 | FLORIDA GAS TRANSMISSION COMPANY, LLC | WEST MELBOURNE, Brevard, FL | Pass | State |
| 2024-10-02 | FLORIDA GAS TRANSMISSION COMPANY, LLC | WEST MELBOURNE, Brevard, FL | Pass | State |
| 2024-10-02 | FLORIDA GAS TRANSMISSION COMPANY, LLC | WEST MELBOURNE, Brevard, FL | Pass | State |
| 2024-10-02 | FLORIDA GAS TRANSMISSION COMPANY, LLC | WEST MELBOURNE, Brevard, FL | Pass | State |
| 2024-10-02 | OLEANDER POWER PROJECT, LP | COCOA, Brevard, FL | Pass | State |
| 2024-10-02 | OLEANDER POWER PROJECT, LP | COCOA, Brevard, FL | Pass | State |
| 2024-10-02 | OLDCASTLE APG SOUTH | POMPANO BEACH, Broward, FL | Pass | State |
| 2024-10-02 | OLDCASTLE APG SOUTH | POMPANO BEACH, Broward, FL | Pass | State |
| 2024-10-02 | SOUTH FLORIDA WATER MANAGEMENT DISTRICT | MIAMI, Miami-Dade, FL | Pass | State |
| 2024-10-02 | SOUTH FLORIDA WATER MANAGEMENT DISTRICT | MIAMI, Miami-Dade, FL | Pass | State |
| 2024-10-02 | MCK TERMINALS, LLC — high-priority violation on file | JACKSONVILLE, Duval, FL | Pass | State |
| 2024-10-02 | CHATTAHOOCHEE ENERGY FACILITY | FRANKLIN, Heard, GA | Pass | State |
| 2024-10-02 | CHATTAHOOCHEE ENERGY FACILITY | FRANKLIN, Heard, GA | Pass | State |
| 2024-10-02 | KANSAS CITY SAUSAGE, LLC , DBA PINE RIDGE FARMS | DES MOINES, Polk, IA | Fail | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.