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 |
|---|---|---|---|---|
| 2024-09-16 | ET GATHERING PROCESSING LLC / BISHOP 2 COMPRESSOR STATION | ARNETT, Ellis, OK | Pass | State |
| 2024-09-16 | ET GATHERING PROCESSING LLC / BISHOP 2 COMPRESSOR STATION | ARNETT, Ellis, OK | Pass | State |
| 2024-09-16 | FW MIDCON I LLC / WITTROCK 1609 7H 8H 9X | OMEGA, Kingfisher, OK | Pass | State |
| 2024-09-16 | DCP OPERATING CO LP / SKIPPER COMPRESSOR STATION | FOSTER, Stephens, OK | Pass | State |
| 2024-09-16 | DCP OPERATING CO LP / SKIPPER COMPRESSOR STATION | FOSTER, Stephens, OK | Pass | State |
| 2024-09-16 | CONSOL PA COAL CO LLC/BAILEY PREP PLT — high-priority violation on file | WEST FINLEY, Greene, PA | Pass | State |
| 2024-09-16 | SUNNYSIDE COGENERATION | SUNNYSIDE, Carbon, UT | Pass | State |
| 2024-09-16 | WISCONSIN ELECTRIC POWER COMPANY D/B/A WE ENERGIES-PARIS GENERATING STATION | UNION GROVE, Kenosha, WI | Pass | State |
| 2024-09-15 | EOG - BRONCO LGL STATION — high-priority violation on file | JAL, Lea, NM | Pass | State |
| 2024-09-15 | EOG - BRONCO LGL STATION — high-priority violation on file | JAL, Lea, NM | Pass | State |
| 2024-09-15 | EOG - BRONCO LGL STATION — high-priority violation on file | JAL, Lea, NM | Pass | State |
| 2024-09-15 | EOG - BRONCO LGL STATION — high-priority violation on file | JAL, Lea, NM | Pass | State |
| 2024-09-15 | EOG - BRONCO LGL STATION — high-priority violation on file | JAL, Lea, NM | Pass | State |
| 2024-09-15 | INTERNATIONAL PAPER | SPRINGFIELD, Lane, OR | Pending | Local |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | N/A | State |
| 2024-09-13 | UNIVERSITY OF ALASKA / UNIVERSITY OF ALASKA FAIRBANKS CAMPUS — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2024-09-13 | AM/NS CALVERT LLC | CALVERT, Mobile, AL | Pass | State |
| 2024-09-13 | GERDAU MACSTEEL | FORT SMITH, Sebastian, AR | Pass | State |
| 2024-09-13 | FREEPORT-MCMORAN - MORENCI | MORENCI, Greenlee, AZ | Pass | State |
| 2024-09-13 | UNITED DAIRYMEN OF ARIZONA | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2024-09-13 | REAL ALLOY ARIZONA | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2024-09-13 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | KERSEY 7.1 MI. N OF, Weld, CO | Pass | State |
| 2024-09-13 | KERR-MCGEE O&G GADDIS 3-36HZ | JOHNSTOWN AREA, Weld, CO | Pass | State |
| 2024-09-13 | MCINTOSH COMBUSTION TURBINE - ELECTRIC GENERATING PLANT | RINCON, Effingham, GA | Pass | State |
| 2024-09-13 | MCINTOSH COMBUSTION TURBINE - ELECTRIC GENERATING PLANT | RINCON, Effingham, GA | Pass | State |
| 2024-09-13 | RAVEN NORTHBROOK LLC | SPRINGFIELD, Sarpy, NE | N/A | State |
| 2024-09-13 | ST JOSEPHS HOSPITAL & MEDICAL CENTER | PATERSON, Passaic, NJ | Pass | State |
| 2024-09-13 | BOOTLEG RIDGE COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-13 | WILDCAT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-13 | WILDCAT COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-13 | TROJAN HORSE COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2024-09-13 | CADILLAC COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2024-09-13 | EOG RESOURCES INC / DESKINS CTB | BLANCHARD, Grady, OK | Pass | State |
| 2024-09-13 | CHISHOLM OIL AND GAS OPERATING LLC / PHILWW 1808 17 1MH FACILITY | LOYAL, Kingfisher, OK | Pass | State |
| 2024-09-13 | SUPERIOR MIDSTREAM LLC / CASHION NORTH BOOSTER STATION (WASWO) | CASHION, Logan, OK | Pass | State |
| 2024-09-13 | SUPERIOR MIDSTREAM LLC / BRONN COMPRESSOR | PIEDMONT, Oklahoma, OK | Pass | State |
| 2024-09-13 | CONSOL PA COAL CO LLC/BAILEY PREP PLT — high-priority violation on file | WEST FINLEY, Greene, PA | Pending | State |
| 2024-09-13 | LIBERTY PULTRUSIONS/WEST MIFFLIN | WEST MIFFLIN, Allegheny, PA | Pass | Local |
| 2024-09-13 | LIBERTY PULTRUSIONS/WEST MIFFLIN | WEST MIFFLIN, Allegheny, PA | Pass | Local |
| 2024-09-13 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2024-09-13 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2024-09-13 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2024-09-13 | PINEDALE COMPLEX (HARVEST MIDSTREAM COMPANY) | SUBLETTE COUNTY, Sublette, WY | Pass | State |
| 2024-09-12 | WARRIOR MET COAL GAS, LLC | BROOKWOOD, Tuscaloosa, AL | Pass | State |
| 2024-09-12 | RAZORBACK GATHERING COMPANY, LLC - HILLTOP COMPRESSOR STATION | CLINTON, Van Buren, AR | Pass | State |
| 2024-09-12 | DESOTO GATHERING COMPANY, LLC - NORTH YELLOWSTONE CPF-2 | BEE BRANCH, Van Buren, AR | Pass | State |
| 2024-09-12 | DESOTO GATHERING COMPANY, LLC - SOUTHWEST GREER LAKE CPF-5 | CLINTON, Van Buren, AR | Pending | State |
| 2024-09-12 | DRAKE CEMENT- DRAKE ROAD SITE — high-priority violation on file | PAULDEN, Yavapai, AZ | Pass | State |
| 2024-09-12 | SOLANA GENERATING STATION | MARICOPA COUNTY, Maricopa, AZ | Pass | Local |
| 2024-09-12 | SACRAMENTO AREA SEWER DISTRICT | ELK GROVE, Sacramento, CA | Pass | Local |
| 2024-09-12 | TESORO REFINING AND MARKETING CO, LLC | CARSON, Los Angeles, CA | Pass | Local |
| 2024-09-12 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-12 | H. J. HEINZ COMPANY, L.P. | ESCALON, San Joaquin, CA | Pass | Local |
| 2024-09-12 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | KERSEY 7.1 MI. N OF, Weld, CO | Pass | State |
| 2024-09-12 | BONANZA CRK STATE NORTH PLATTE CPF 42-26 | KERSEY 7.1 MI. N OF, Weld, CO | Pass | State |
| 2024-09-12 | BONANZA CREEK - STATE PRONGHORN CPF 41-3 | WIGGINS 11.6 MI. NW OF, Weld, CO | Pass | State |
| 2024-09-12 | FLORIDA POWER & LIGHT (PMR) | INDIANTOWN, Martin, FL | Pass | State |
| 2024-09-12 | FLORIDA POWER & LIGHT (PMR) | INDIANTOWN, Martin, FL | Pass | State |
| 2024-09-12 | DUKE ENERGY FLORIDA, LLC | INTERCESSION CITY, Osceola, FL | Pass | State |
| 2024-09-12 | DUKE ENERGY FLORIDA, LLC | INTERCESSION CITY, Osceola, FL | Pass | State |
| 2024-09-12 | DUKE ENERGY FLORIDA, LLC | LIVE OAK, Suwannee, FL | Pass | State |
| 2024-09-12 | DUKE ENERGY FLORIDA, LLC | LIVE OAK, Suwannee, FL | Pass | State |
| 2024-09-12 | DUKE ENERGY FLORIDA, LLC | LIVE OAK, Suwannee, FL | Pass | State |
| 2024-09-12 | DUKE ENERGY FLORIDA, LLC | LIVE OAK, Suwannee, FL | Pass | State |
| 2024-09-12 | VARN WOOD PRODUCTS, LLC | HOBOKEN, Brantley, GA | Pass | State |
| 2024-09-12 | VARN WOOD PRODUCTS, LLC | HOBOKEN, Brantley, GA | Pass | State |
| 2024-09-12 | VARN WOOD PRODUCTS, LLC | HOBOKEN, Brantley, GA | Pass | State |
| 2024-09-12 | VARN WOOD PRODUCTS, LLC | HOBOKEN, Brantley, GA | Pass | State |
| 2024-09-12 | VARN WOOD PRODUCTS, LLC | HOBOKEN, Brantley, GA | Pass | State |
| 2024-09-12 | TROJAN BATTERY COMPANY, LLC | LITHONIA, DeKalb, GA | Pass | State |
| 2024-09-12 | QUALITY INVESTMENT PROPERTIES SUWANEE, LLC | SUWANEE, Gwinnett, GA | Pass | State |
| 2024-09-12 | ILC RESOURCES/IOWA LIMESTONE CO-PLTS 1&3 | ALDEN, Hardin, IA | Fail | State |
| 2024-09-12 | P4 PRODUCTION LLC BLACKFOOT BRIDGE MINE | SODA SPRINGS, Caribou, ID | Pass | State |
| 2024-09-12 | DIXIE RIVER DBA RIVER ROCK SAND & GRAVEL 00586 | NAMPA, Canyon, ID | Pass | State |
| 2024-09-12 | CARMEUSE LIME INCORPORATED — high-priority violation on file | GARY, Lake, IN | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.