EPA Air · stack tests by year
Air-emissions stack tests in 2021
- 35,950Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2021
- California 17,676
- Ohio 2,582
- Florida 1,540
- Indiana 1,495
- Oklahoma 1,318
- Georgia 1,189
- New Mexico 841
- Pennsylvania 788
- Alabama 621
- Mississippi 589
- Texas 574
- Arkansas 518
- Missouri 515
- Colorado 407
- Iowa 368
- Washington 334
- North Carolina 273
- Michigan 256
- Wisconsin 239
- Wyoming 235
- West Virginia 225
- Kentucky 222
- Delaware 222
- Montana 220
- South Carolina 217
- Minnesota 209
- Kansas 177
- Alaska 143
- Illinois 142
- Utah 140
- Nevada 136
- Virginia 131
- Nebraska 117
- Maine 110
- New Jersey 110
- New York 103
- Connecticut 99
- Tennessee 98
- North Dakota 93
- Arizona 93
- Idaho 90
- Louisiana 69
- Hawaii 64
- Maryland 56
- South Dakota 55
- District of Columbia 54
- New Hampshire 53
- Oregon 45
- Rhode Island 34
- Massachusetts 29
- Puerto Rico 19
- Vermont 17
Other years
Air-emissions stack tests recorded in 2021
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2021-12-02 | E ENERGY ADAMS LLC — high-priority violation on file | ADAMS, Gage, NE | N/A | State |
| 2021-12-02 | TIGER COMPRESSOR STATION — high-priority violation on file | MALAGA, Eddy, NM | Pass | State |
| 2021-12-02 | TIGER COMPRESSOR STATION — high-priority violation on file | MALAGA, Eddy, NM | Pass | State |
| 2021-12-02 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2021-12-02 | GM DEFIANCE CASTING OPERATIONS | DEFIANCE, Defiance, OH | Pass | State |
| 2021-12-02 | GM DEFIANCE CASTING OPERATIONS | DEFIANCE, Defiance, OH | Pass | State |
| 2021-12-02 | APEX LFG ENERGY, LLC | AMSTERDAM, Jefferson, OH | Pass | State |
| 2021-12-02 | APEX LFG ENERGY, LLC | AMSTERDAM, Jefferson, OH | Pass | State |
| 2021-12-02 | CLEVELAND-CLIFFS STEEL CORPORATION — high-priority violation on file | MIDDLETOWN, Butler, OH | Pass | State |
| 2021-12-02 | ROHRER CORPORATION | WADSWORTH, Medina, OH | Pass | State |
| 2021-12-02 | ROHRER CORPORATION | WADSWORTH, Medina, OH | Pass | State |
| 2021-12-02 | ROHRER CORPORATION | WADSWORTH, Medina, OH | Pass | State |
| 2021-12-02 | ONEOK FIELD SERVICES CO LLC / WARD COMPRESSOR STATION NORTHERN ROWS | GEARY, Canadian, OK | Pass | State |
| 2021-12-02 | DCP OPERATING CO LP / HOBIT COMPRESSOR STATION — high-priority violation on file | ARNETT, Ellis, OK | Pass | State |
| 2021-12-02 | CONTINENTAL RESOURCES / TRIPLE H 4 30 31HS TRIPLE H 5 30 31XS | TABLER, Grady, OK | Pass | State |
| 2021-12-02 | ET GATHERING PROCESSING LLC / K 9 COMPRESSOR STATION | NASH, Grant, OK | Pass | State |
| 2021-12-02 | MID AMERICAN STEEL AND WIRE CO / MID AMERICAN STEEL ROLLING MILL | MADILL, Marshall, OK | Pass | State |
| 2021-12-02 | LORD CORP/SAEGERTOWN | SAEGERTOWN, Crawford, PA | Pass | State |
| 2021-12-02 | JANSSEN RESEARCH & DEVELOPMENT LLC/LOWER GWYNEDD | SPRING HOUSE, Montgomery, PA | Pass | State |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | VIATRIS (FKA PFIZER) | VEGA BAJA, Vega Baja, PR | Pass | U.S. EPA |
| 2021-12-02 | CHINA JUSHI USA CORPORATION — high-priority violation on file | COLUMBIA, Richland, SC | Pass | State |
| 2021-12-02 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2021-12-02 | COLUMBIA GAS TRANSMISSION LLC - BICKERS | STANARDSVILLE, Greene, VA | Pass | State |
| 2021-12-02 | QTS INVESTMENT PROPERTIES MANASSAS LLC | MANASSAS, Prince William, VA | Pass | State |
| 2021-12-02 | CADMAN MATERIALS, INC. (CADMAN) | EVERETT, Snohomish, WA | Pass | Local |
| 2021-12-02 | CADMAN MATERIALS, INC. (CADMAN) | EVERETT, Snohomish, WA | Pass | Local |
| 2021-12-02 | CADMAN MATERIALS, INC. (CADMAN) | EVERETT, Snohomish, WA | Pass | Local |
| 2021-12-02 | CADMAN MATERIALS, INC. (CADMAN) | EVERETT, Snohomish, WA | Pass | Local |
| 2021-12-02 | CASTALLOY, INC. | WAUKESHA, Waukesha, WI | Pass | State |
| 2021-12-01 | COTTONWOOD WASH COMPRESSOR STATION | VERNAL, Uintah, UT | Pass | U.S. EPA |
| 2021-12-01 | MISSISSIPPI LIME COMPANY | CALERA, Shelby, AL | Pass | State |
| 2021-12-01 | MISSISSIPPI LIME COMPANY | CALERA, Shelby, AL | Pass | State |
| 2021-12-01 | REYNOLDS CONSUMER PRODUCTS LLC | MALVERN, Hot Spring, AR | Pass | State |
| 2021-12-01 | CHULA VISTA ENERGY CENTER LLC | CHULA VISTA, San Diego, CA | Pass | Local |
| 2021-12-01 | ELK CORPORATION OF TEXAS | SHAFTER, Kern, CA | Pass | Local |
| 2021-12-01 | ELK CORPORATION OF TEXAS | SHAFTER, Kern, CA | Pass | Local |
| 2021-12-01 | ELK CORPORATION OF TEXAS | SHAFTER, Kern, CA | Pass | Local |
| 2021-12-01 | FULCRUM ENERGY - BIGHORN-MUTUAL 0780 S17 | WALDEN 11.6 MI. N OF, Jackson, CO | Pass | State |
| 2021-12-01 | FULCRUM ENERGY - BIGHORN-MUTUAL 0780 S17 | WALDEN 11.6 MI. N OF, Jackson, CO | Pass | State |
| 2021-12-01 | INTERNATIONAL PAPER COMPANY | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-01 | INTERNATIONAL PAPER COMPANY | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-01 | INTERNATIONAL PAPER COMPANY | CANTONMENT, Escambia, FL | Pass | State |
| 2021-12-01 | HILLSBOROUGH COUNTY SOLID WASTE MGT DEPT | LITHIA, Hillsborough, FL | Pass | State |
| 2021-12-01 | WEST FRASER- DUDLEY LUMBER MILL | DUDLEY, Laurens, GA | Pass | State |
| 2021-12-01 | CARBO CERAMICS, INC. - MCINTYRE PLANT — high-priority violation on file | MCINTYRE, Wilkinson, GA | Pass | State |
| 2021-12-01 | CARBO CERAMICS, INC. - MCINTYRE PLANT — high-priority violation on file | MCINTYRE, Wilkinson, GA | Pass | State |
| 2021-12-01 | CARBO CERAMICS, INC. - MCINTYRE PLANT — high-priority violation on file | MCINTYRE, Wilkinson, GA | Pass | State |
| 2021-12-01 | CARBO CERAMICS, INC. - MCINTYRE PLANT — high-priority violation on file | MCINTYRE, Wilkinson, GA | Pass | State |
| 2021-12-01 | VALERO RENEWABLE FUELS CO LLC-FT DODGE | FORT DODGE, Webster, IA | Pass | State |
| 2021-12-01 | HIGH DESERT MILK | BURLEY, Cassia, ID | Pass | State |
| 2021-12-01 | GAS TRANSMISSION NORTHWEST - COMPRESSOR STATION 5 - ATHOL | ATHOL, Kootenai, ID | Pass | State |
| 2021-12-01 | NIKKEI MC ALUMINUM AMERICA INC | COLUMBUS, Bartholomew, IN | Pass | State |
| 2021-12-01 | NIKKEI MC ALUMINUM AMERICA INC | COLUMBUS, Bartholomew, IN | Pass | State |
| 2021-12-01 | NIKKEI MC ALUMINUM AMERICA INC | COLUMBUS, Bartholomew, IN | Pass | State |
| 2021-12-01 | TEXAS GAS TRANSMISSION LLC DILLSBORO COMPRESSOR STATION | AURORA, Dearborn, IN | Pass | State |
| 2021-12-01 | TEXAS GAS TRANSMISSION LLC DILLSBORO COMPRESSOR STATION | AURORA, Dearborn, IN | Pass | State |
| 2021-12-01 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2021-12-01 | CARDINAL ETHANOL LLC — high-priority violation on file | UNION CITY, Randolph, IN | Pass | State |
| 2021-12-01 | RECAST ENERGY LOUISVILLE, LLC | LOUISVILLE, Jefferson, KY | Pass | Local |
| 2021-12-01 | WEYERHAEUSER NR COMPANY | GRAYLING, Crawford, MI | Pending | State |
| 2021-12-01 | BRENT RUN LANDFILL | MONTROSE, Genesee, MI | Pass | State |
| 2021-12-01 | ST. FRANCIS POWER PLANT | CAMPBELL, Dunklin, MO | Pass | State |
| 2021-12-01 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2021-12-01 | OIL DRI PRODUCTION COMPANY | RIPLEY, Tippah, MS | Pass | State |
| 2021-12-01 | ENVIVA HAMLET | HAMLET, Richmond, NC | Pass | State |
| 2021-12-01 | PLANT ROWAN COUNTY | SALISBURY, Rowan, NC | Pending | State |
| 2021-12-01 | AMERICAN CRYSTAL SUGAR COMPANY (ACS) - DRAYTON PLANT - AQ | DRAYTON, Pembina, ND | Fail | State |
| 2021-12-01 | JAEGER USA, INC. | ROCHESTER, Strafford, NH | Pass | State |
| 2021-12-01 | MARCAL PAPER MILLS INC — high-priority violation on file | ELMWOOD PARK, Bergen, NJ | Pass | State |
| 2021-12-01 | TIGER COMPRESSOR STATION — high-priority violation on file | MALAGA, Eddy, NM | Pass | State |
| 2021-12-01 | TIGER COMPRESSOR STATION — high-priority violation on file | MALAGA, Eddy, NM | Pass | State |
| 2021-12-01 | W. H. SAMMIS PLANT | STRATTON, Jefferson, OH | Pass | State |
| 2021-12-01 | W. H. SAMMIS PLANT | STRATTON, Jefferson, OH | Pass | State |
| 2021-12-01 | W. H. SAMMIS PLANT | STRATTON, Jefferson, OH | Pass | State |
| 2021-12-01 | B-WAY CORPORATION | CINCINNATI, Hamilton, OH | Pass | State |
| 2021-12-01 | B-WAY CORPORATION | CINCINNATI, Hamilton, OH | Pass | State |
| 2021-12-01 | ET GATHERING PROCESSING LLC / PUMBA COMPRESSOR STATION | GREENFIELD, Blaine, OK | Pass | State |
| 2021-12-01 | ET GATHERING PROCESSING LLC / PUMBA COMPRESSOR STATION | GREENFIELD, Blaine, OK | Pass | State |
| 2021-12-01 | ONEOK FIELD SERVICES CO LLC / BURNS COMPRESSOR STATION | GEARY, Canadian, OK | Pass | State |
| 2021-12-01 | FW MIDCON I LLC / MCCLOUD 1 6SH STARFOX 2 7 6SXH SOMERS | ERIN SPRINGS, Garvin, OK | Pass | State |
| 2021-12-01 | GRAND RIVER DAM AUTHORITY / GRAND RIVER ENERGY CENTER — high-priority violation on file | CHOUTEAU, Mayes, OK | Pass | State |
| 2021-12-01 | AMRIZE CEMENT INC/WHITEHALL PLT — high-priority violation on file | WHITEHALL, Lehigh, PA | Pass | State |
| 2021-12-01 | AMRIZE CEMENT INC/WHITEHALL PLT — high-priority violation on file | WHITEHALL, Lehigh, PA | Pass | State |
| 2021-12-01 | REGENCY MARCELLUS GAS GATHERING LLC/TAYLOR COMP STA | CANTON, Bradford, PA | Pass | State |
| 2021-12-01 | UNITED STATES DOE - SAVANNAH RIVER SITE (SRNS, SRMC, BSRA), LLC | AIKEN, Aiken, SC | Pass | State |
| 2021-12-01 | BI-COUNTY GAS PRODUCERS, LLC | WOODLAWN, Montgomery, TN | Pass | State |
| 2021-12-01 | COLUMBIA GAS TRANSMISSION LLC - STRASBURG COM STA | STRASBURG, Shenandoah, VA | Pass | State |
| 2021-12-01 | VAAGEN BROS LUMBER | COLVILLE, Stevens, WA | Pass | State |
| 2021-12-01 | OWENS-BROCKWAY GLASS CONTAINER, INC. — high-priority violation on file | KALAMA, Cowlitz, WA | Pass | Local |
| 2021-12-01 | TABLE MOUNTAIN - CHAIR COMPRESSOR STATION (PRONGHORN MIDSTREAM LLC) | JOHNSON COUNTY, Johnson, WY | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.