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 |
|---|---|---|---|---|
| 2021-12-15 | CARMI LIGHT & WATER | CARMI, White, IL | Pass | State |
| 2021-12-15 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-15 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-15 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-15 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-15 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-15 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2021-12-15 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2021-12-15 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2021-12-15 | UNITED STATES GYPSUM COMPANY | EAST SHOALS, Martin, IN | Pass | State |
| 2021-12-15 | ELECTRO CYCLE INC | MADISONVILLE, Hopkins, KY | Pass | State |
| 2021-12-15 | LOUISVILLE GAS & ELECTRIC | MAGNOLIA, Larue, KY | Pass | State |
| 2021-12-15 | BAE SYSTEMS | LOUISVILLE, Jefferson, KY | Pass | Local |
| 2021-12-15 | THERMO FISHER SCIENTIFIC | BEDFORD, TOWN OF, Middlesex, MA | Pass | State |
| 2021-12-15 | MAGNITUDE 7 METALS, LLC | MARSTON, New Madrid, MO | Pending | State |
| 2021-12-15 | MAGNITUDE 7 METALS, LLC | MARSTON, New Madrid, MO | Pending | State |
| 2021-12-15 | OWENS-BROCKWAY GLASS CONTAINER INC. | LEXINGTON, Davidson, NC | Pass | State |
| 2021-12-15 | WESTROCK KRAFT PAPER, LLC | ROANOKE RAPIDS, Halifax, NC | Pass | State |
| 2021-12-15 | WESTROCK KRAFT PAPER, LLC | ROANOKE RAPIDS, Halifax, NC | Pass | State |
| 2021-12-15 | DEEP ELEM LGL STATION | LOVING, Eddy, NM | Pass | State |
| 2021-12-15 | DEEP ELEM LGL STATION | LOVING, Eddy, NM | Pass | State |
| 2021-12-15 | JERRITT CANYON MINE — high-priority violation on file | ELKO, Elko, NV | Fail | State |
| 2021-12-15 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2021-12-15 | AMRIZE RAVENA FACILITY | COEYMANS, Albany, NY | Pass | State |
| 2021-12-15 | HOLLINGSWORTH & VOSE-EASTON MILL | EASTON, Washington, NY | Pass | State |
| 2021-12-15 | NESTLE R&D CENTER, INC. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-15 | NESTLE R&D CENTER, INC. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-15 | NIPPON SANSO MATHESON, INC. | LIMA, Allen, OH | Pass | State |
| 2021-12-15 | CARMEUSE LIME, INC. - MAPLE GROVE OPERATIONS — high-priority violation on file | BETTSVILLE, Seneca, OH | Pass | State |
| 2021-12-15 | CARMEUSE LIME, INC. - MAPLE GROVE OPERATIONS — high-priority violation on file | BETTSVILLE, Seneca, OH | Pass | State |
| 2021-12-15 | PILKINGTON NORTH AMERICA INC — high-priority violation on file | ROSSFORD, Wood, OH | Pass | State |
| 2021-12-15 | OSCO INC.-JACKSON DIVISION | JACKSON, Jackson, OH | Pass | State |
| 2021-12-15 | HOLLIDAY PAD 952538 | CLARINGTON, Monroe, OH | Pass | State |
| 2021-12-15 | HOLLIDAY PAD 952538 | CLARINGTON, Monroe, OH | Pass | State |
| 2021-12-15 | HOLLIDAY PAD 952538 | CLARINGTON, Monroe, OH | Pass | State |
| 2021-12-15 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-12-15 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-12-15 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-12-15 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-12-15 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-12-15 | INR MIDSTREAM, LLC - UPPER HILL COMPRESSOR STATION | SARAHSVILLE, Noble, OH | Pass | State |
| 2021-12-15 | MARKWEST OKLAHOMA GAS CO LLC / STUART SOUTH COMPRESSOR STATION | STUART, Hughes, OK | Pass | State |
| 2021-12-15 | ET GATHERING PROCESSING LLC / DIBBLE COMPRESSOR STATION | DIBBLE, McClain, OK | Pass | State |
| 2021-12-15 | ET GATHERING PROCESSING LLC / POTEET COMPRESSOR STATION | BRAY, Stephens, OK | Pass | State |
| 2021-12-15 | ET GATHERING PROCESSING LLC / POTEET COMPRESSOR STATION | BRAY, Stephens, OK | Pass | State |
| 2021-12-15 | ET GATHERING PROCESSING LLC / POTEET COMPRESSOR STATION | BRAY, Stephens, OK | Pass | State |
| 2021-12-15 | SFPP, L.P., EUGENE TERMINAL | EUGENE, Lane, OR | Pass | Local |
| 2021-12-15 | NORTHAMPTON GEN CO/NORTHAMPTON | NORTHAMPTON, Northampton, PA | Pass | State |
| 2021-12-15 | ALTUGLAS LLC/BRISTOL TWP | BRISTOL, Bucks, PA | Pass | State |
| 2021-12-15 | EASTERN GAS TRANS & STORAGE/CHAMBERSBURG COMP STA | CHAMBERSBURG, Franklin, PA | Pass | State |
| 2021-12-15 | SWN PROD CO FIONDI SITE COMP STA | MONTROSE, Susquehanna, PA | Pass | State |
| 2021-12-15 | SANTEE COOPER CROSS GENERATING STATION — high-priority violation on file | PINEVILLE, Berkeley, SC | Pass | State |
| 2021-12-15 | HUB CITY ENERGY, LLC — high-priority violation on file | ABERDEEN, Brown, SD | Pass | State |
| 2021-12-15 | HUB CITY ENERGY, LLC — high-priority violation on file | ABERDEEN, Brown, SD | Pass | State |
| 2021-12-15 | INGENCO - BRUNSWICK PLANT | LAWRENCEVILLE, Brunswick, VA | Pass | State |
| 2021-12-15 | GREEN BAY PACKAGING INC - GB MILL DIV | GREEN BAY, Brown, WI | Pass | State |
| 2021-12-15 | CRYSTAL FINISHING SYSTEMS INC - MOSINEE — high-priority violation on file | MOSINEE, Marathon, WI | Fail | State |
| 2021-12-15 | MOLSON COORS USA LLC | MILWAUKEE, Monroe, WI | Pass | State |
| 2021-12-15 | APPALACHIAN POWER CO. - MOUNTAINEER PLANT, NEW HAVEN | NEW HAVEN, Mason, WV | Pass | State |
| 2021-12-15 | ANTERO MIDSTREAM LLC, WEST MOUNTAIN STATION | PENNSBORO, Ritchie, WV | Pass | State |
| 2021-12-15 | MPM SILICONES, LLC, FRIENDLY | FRIENDLY, Tyler, WV | Pass | State |
| 2021-12-15 | MPM SILICONES, LLC, FRIENDLY | FRIENDLY, Tyler, WV | Pass | State |
| 2021-12-14 | PETRO STAR, INC. / PETRO STAR VALDEZ REFINERY — high-priority violation on file | VALDEZ, Valdez-Cordova (CA), AK | Pass | State |
| 2021-12-14 | SCOTCH GULF LUMBER LLC | FULTON, Clarke, AL | Pass | State |
| 2021-12-14 | WESTROCK COATED BOARD LLC-MAHRT MILL | PHENIX CITY, Russell, AL | Pass | State |
| 2021-12-14 | ALABAMA POWER COMPANY | WILSONVILLE, Shelby, AL | Pass | State |
| 2021-12-14 | EMERY SAPP AND SONS - BERRYVILLE FACILITY | BERRYVILLE, Carroll, AR | Pass | State |
| 2021-12-14 | TEX-TECH ENGINEERED COMPOSITES INC | GARDENA, Los Angeles, CA | Pass | Local |
| 2021-12-14 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-14 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-14 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-14 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-14 | CALIFORNIA RESOURCES PRODUCTION CORP — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-12-14 | MID-AMERICA PIPELINE CO DOVE CR STA | DOVE CREEK 5.3 MI. NW OF, Dolores, CO | Pass | State |
| 2021-12-14 | PHOENIX SOIL, A CLEAN EARTH CO | PLAINVILLE, Hartford, CT | Fail | State |
| 2021-12-14 | HARTFORD WATER POLLUTION CONTROL FACILITY — high-priority violation on file | HARTFORD, Hartford, CT | Pass | U.S. EPA |
| 2021-12-14 | NOVELIS, INC. | GREENSBORO, Greene, GA | Pass | State |
| 2021-12-14 | CF INDUSTRIES NITROGEN LLC - PORT NEAL NITROGEN COMPLEX — high-priority violation on file | SERGEANT BLUFF, Woodbury, IA | Pass | State |
| 2021-12-14 | BALES METAL SURFACE SOLUTIONS | DOWNERS GROVE, DuPage, IL | Pass | State |
| 2021-12-14 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-14 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-14 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-14 | SUPERIOR METAL TECHNOLOGIES | INDIANAPOLIS, Marion, IN | Pass | State |
| 2021-12-14 | EVERGY - LA CYGNE (AIR) | LA CYGNE, Linn, KS | Pass | State |
| 2021-12-14 | BIG RUN POWER PRODUCERS LLC | ASHLAND, Boyd, KY | Pass | State |
| 2021-12-14 | NORTH AMERICAN STAINLESS | GHENT, Carroll, KY | Pass | State |
| 2021-12-14 | NORTH AMERICAN STAINLESS | GHENT, Carroll, KY | Pass | State |
| 2021-12-14 | LOUISVILLE GAS & ELECTRIC CENTER STORAGE | HARDYVILLE, Hart, KY | Pass | State |
| 2021-12-14 | CITY OF AUGUSTA - HATCH HILL LANDFILL | AUGUSTA, Kennebec, ME | Pass | State |
| 2021-12-14 | MICHIGAN SUGAR COMPANY, CROSWELL FACTORY — high-priority violation on file | CROSWELL, Sanilac, MI | Pass | State |
| 2021-12-14 | LANSING BOARD OF WATER & LIGHT - ERICKSON STATION | LANSING, Eaton, MI | Pass | State |
| 2021-12-14 | GRAND MARAIS PUBLIC UTILITIES COMMISSION | GRAND MARAIS, Cook, MN | Pass | State |
| 2021-12-14 | UNIVERSITY OF MN - TWIN CITIES | MINNEAPOLIS, Hennepin, MN | Pass | State |
| 2021-12-14 | BORA PHARMACEUTICALS INC. | MAPLE GROVE, Hennepin, MN | Pass | State |
| 2021-12-14 | ENERSYS ENERGY PRODUCTS INC - SPRINGFIELD 2 | SPRINGFIELD, Greene, MO | Pass | State |
| 2021-12-14 | CENTERSTREAM STL LLC | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2021-12-14 | CENTERSTREAM STL LLC | SAINT LOUIS, St. Louis (city), MO | Pass | State |
| 2021-12-14 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-12-14 | FIREBALL GROUP LLC DATA CENTER — high-priority violation on file | PAPILLION, Sarpy, NE | N/A | State |
| 2021-12-14 | NUCOR STEEL | NORFOLK, Madison, NE | N/A | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.