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 |
|---|---|---|---|---|
| 2024-09-18 | RIDDELL SPORTS GROUP, INC. | NORTH RIDGEVILLE, Lorain, OH | Pass | State |
| 2024-09-18 | RIDDELL SPORTS GROUP, INC. | NORTH RIDGEVILLE, Lorain, OH | Pass | State |
| 2024-09-18 | RIDDELL SPORTS GROUP, INC. | NORTH RIDGEVILLE, Lorain, OH | Pass | State |
| 2024-09-18 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-18 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-18 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-18 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-18 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-18 | AMRIZE CEMENT INC. | PAULDING, Paulding, OH | Pass | State |
| 2024-09-18 | NEXPERA FORT HILL PLANT | NORTH BEND, Hamilton, OH | Pass | State |
| 2024-09-18 | GM CEREALS PROPERTIES, INC. | CINCINNATI, Hamilton, OH | Pass | State |
| 2024-09-18 | GM CEREALS PROPERTIES, INC. | CINCINNATI, Hamilton, OH | Pass | State |
| 2024-09-18 | ONEOK FIELD SERVICES CO LLC / WARD COMPRESSOR STATION NORTHERN ROWS | GEARY, Canadian, OK | Pass | State |
| 2024-09-18 | VALIDUS ENERGY II MIDCON LLC / RADER PAD | EL RENO, Canadian, OK | Pass | State |
| 2024-09-18 | VALIDUS ENERGY II MIDCON LLC / RIVA RIDGE PAD | UNION CITY, Canadian, OK | Pass | State |
| 2024-09-18 | VALIDUS ENERGY II MIDCON LLC / BOLLENBACH 1 11H FARRAR 1 14H | CASHION, Kingfisher, OK | Pass | State |
| 2024-09-18 | SENECA SUSTAINABLE ENERGY | EUGENE, Lane, OR | Pass | Local |
| 2024-09-18 | DNP IMS AMER/SONY TECH CTR NEW STANTON | MOUNT PLEASANT, Westmoreland, PA | Pass | State |
| 2024-09-18 | TENNESSEE GAS PIPELINE CO LLC/STA 310 | CLERMONT, McKean, PA | Pass | State |
| 2024-09-18 | WILLIAMS FIELD SVC CO LLC/LATHROP COMP STA | SPRINGVILLE, Susquehanna, PA | Pass | State |
| 2024-09-18 | WILLIAMS FIELD SVC CO LLC/SHASKAS COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2024-09-18 | NFG MIDSTREAM TROUT RUN LLC/BODINE COMP STA | TROUT RUN, Lycoming, PA | Pass | State |
| 2024-09-18 | SHELL CHEM APPALACHIA/SHELL POLYMERS MONACA — high-priority violation on file | MONACA, Beaver, PA | Pass | State |
| 2024-09-18 | EXPAND OPERATING LLC/RU-71 BLUE BECK WELLPAD | MILFORD, Susquehanna, PA | Pass | State |
| 2024-09-18 | EXPAND OPERATING LLC/RU-47 KARMAZIN PAD | SUSQUEHANNA, Susquehanna, PA | Pass | State |
| 2024-09-18 | SANTEE COOPER CROSS GENERATING STATION — high-priority violation on file | PINEVILLE, Berkeley, SC | Pass | State |
| 2024-09-18 | SANTEE COOPER CROSS GENERATING STATION — high-priority violation on file | PINEVILLE, Berkeley, SC | Pass | State |
| 2024-09-18 | COVIA SOLUTIONS LLC/LUGOFF PLANT | LUGOFF, Kershaw, SC | Pass | State |
| 2024-09-18 | CEMEX CONSTRUCTION MATERIALS ATLANTIC, LLC - KNOXVILLE CEMENT PLANT | KNOXVILLE, Knox, TN | Pass | Local |
| 2024-09-18 | BEDFORD ELECTRIC DEPARTMENT | BEDFORD, Bedford, VA | Pass | State |
| 2024-09-18 | DOMINION - LADYSMITH CT STATION | WOODFORD, Caroline, VA | Pass | State |
| 2024-09-18 | PRINCE WILLIAM COUNTY SANITARY LANDFILL | MANASSAS, Prince William, VA | Pass | State |
| 2024-09-18 | CHEMTRADE SOLUTIONS LLC | ANACORTES, Skagit, WA | Pass | Local |
| 2024-09-18 | U.S. ENERGY GREEN BAY BUCKEYE TERMINAL | GREEN BAY, Brown, WI | Pass | State |
| 2024-09-18 | HYDRITE CHEMICAL CO. — high-priority violation on file | COTTAGE GROVE, Dane, WI | Pass | State |
| 2024-09-18 | SUPERIOR REFINING COMPANY LLC — high-priority violation on file | SUPERIOR, Douglas, WI | Pass | State |
| 2024-09-18 | FELMAN PRODUCTION, LLC, LETART | LETART, Mason, WV | Pass | State |
| 2024-09-18 | FLETCHER/TERHUNE (POWDER RIVER MIDSTREAM, LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2024-09-18 | FLETCHER/TERHUNE (POWDER RIVER MIDSTREAM, LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
| 2024-09-17 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2024-09-17 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2024-09-17 | GAS PROCESSORS, INC. | BROOKLYN, Conecuh, AL | Pass | State |
| 2024-09-17 | TYSON FARMS, INC. | HANCEVILLE, Cullman, AL | Pass | State |
| 2024-09-17 | SOUTHERN NATURAL GAS | GALLION, Hale, AL | Pass | State |
| 2024-09-17 | SOUTHERN NATURAL GAS | GALLION, Hale, AL | Pass | State |
| 2024-09-17 | WESTROCK COMPANY, LLC | STEVENSON, Jackson, AL | Pass | State |
| 2024-09-17 | WESTROCK COMPANY, LLC | STEVENSON, Jackson, AL | Pass | State |
| 2024-09-17 | AMRIZE CEMENT, INC. | THEODORE, Mobile, AL | Pass | State |
| 2024-09-17 | WIREGRASS CONSTRUCTION CO INC | MONTGOMERY, Montgomery, AL | Pass | State |
| 2024-09-17 | MPLX TERMINALS LLC BIRMINGHAM TERMINAL | BIRMINGHAM, Jefferson, AL | Pass | Local |
| 2024-09-17 | HEXION, INC. - HOPE PLANT | HOPE, Hempstead, AR | Pass | State |
| 2024-09-17 | DELTA ASPHALT OF ARKANSAS, INC. - PARAGOULD WEST | PARAGOULD, Greene, AR | Pass | State |
| 2024-09-17 | ASPHALT PAVING & SUPPLY INC. DBA ARROWHEAD MATERIALS | PRESCOTT VALLEY, Yavapai, AZ | Pass | State |
| 2024-09-17 | PHILLIPS 66 COMPANY/LA REFINERY | CARSON, Los Angeles, CA | Pass | Local |
| 2024-09-17 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-17 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-17 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-17 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-17 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-17 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-17 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | SOUTHERN CALIF GAS CO | MARICOPA, Kern, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-17 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.