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 |
|---|---|---|---|---|
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | DARLING INTERNATIONAL | CROWS LANDING, Stanislaus, CA | Pass | Local |
| 2021-11-10 | STAMFORD WPCA | STAMFORD, Fairfield, CT | Pass | State |
| 2021-11-10 | PFIZER GLOBAL MANUFACTURING | GROTON (HISTORICAL), New London, CT | Pass | State |
| 2021-11-10 | BUCKEYE TERMINALS, LLC. | FORT LAUDERDALE, Broward, FL | Pass | State |
| 2021-11-10 | WHITE SPRINGS AGRICULTURAL CHEMICALS,INC | WHITE SPRINGS, Hamilton, FL | Pass | State |
| 2021-11-10 | WHITE SPRINGS AGRICULTURAL CHEMICALS,INC | WHITE SPRINGS, Hamilton, FL | Pass | State |
| 2021-11-10 | WALT DISNEY PARKS AND RESORTS U.S., INC | LAKE BUENA VISTA, Orange, FL | Pass | State |
| 2021-11-10 | PREFERRED MATERIALS, INC. | KISSIMMEE, Osceola, FL | Pass | State |
| 2021-11-10 | WESTLAKE EPOXY INC. | LAKELAND, Polk, FL | Pass | State |
| 2021-11-10 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-10 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-10 | CHATTAHOOCHEE ENERGY FACILITY | FRANKLIN, Heard, GA | Pass | State |
| 2021-11-10 | CHATTAHOOCHEE ENERGY FACILITY | FRANKLIN, Heard, GA | Pass | State |
| 2021-11-10 | CHATTAHOOCHEE ENERGY FACILITY | FRANKLIN, Heard, GA | Pass | State |
| 2021-11-10 | SIOUXLAND ENERGY COOPERATIVE | SIOUX CENTER, Sioux, IA | Pass | State |
| 2021-11-10 | VANTAGE CORN PROCESSORS, LLC | CEDAR RAPIDS, Linn, IA | Pass | Local |
| 2021-11-10 | J R SIMPLOT COMPANY-DON SIDING POCATELLO — high-priority violation on file | POCATELLO, Power, ID | Pass | State |
| 2021-11-10 | UNIVERSITY OF ILLINOIS | CHAMPAIGN, Champaign, IL | Pass | State |
| 2021-11-10 | ILLINOIS POWER GENERATING CO | NEWTON, Jasper, IL | Pass | State |
| 2021-11-10 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-10 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-10 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-10 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-10 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-10 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-10 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-10 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-10 | POET BIOREFINING PORTLAND LLC | PORTLAND, Jay, IN | Pass | State |
| 2021-11-10 | MARTINREA INDUSTRIES INC | NORTH VERNON, Jennings, IN | Pass | State |
| 2021-11-10 | ANR PIPELINE COMPANY LAGRANGE COMPRESSOR STATION — high-priority violation on file | LAGRANGE, LaGrange, IN | Pass | State |
| 2021-11-10 | ANR PIPELINE COMPANY LAGRANGE COMPRESSOR STATION — high-priority violation on file | LAGRANGE, LaGrange, IN | Pass | State |
| 2021-11-10 | ANR PIPELINE COMPANY LAGRANGE COMPRESSOR STATION — high-priority violation on file | LAGRANGE, LaGrange, IN | Pass | State |
| 2021-11-10 | CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file | EAST CHICAGO, Lake, IN | Pass | State |
| 2021-11-10 | CLEVELAND-CLIFFS STEEL LLC — high-priority violation on file | EAST CHICAGO, Lake, IN | Pass | State |
| 2021-11-10 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2021-11-10 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2021-11-10 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2021-11-10 | MEADE MUN. POWER PLANT (AIR) | MEADE, Meade, KS | Pass | State |
| 2021-11-10 | TOKAI CARBON GE LLC | HICKMAN, Fulton, KY | Pass | State |
| 2021-11-10 | SOLUTIA INCORPORATED — high-priority violation on file | SPRINGFIELD, CITY OF, Hampden, MA | Pass | State |
| 2021-11-10 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | CHINA, St. Clair, MI | Pass | State |
| 2021-11-10 | ARBOR HILLS LANDFILL, INC. — high-priority violation on file | NORTHVILLE, Washtenaw, MI | Pass | State |
| 2021-11-10 | DICASTAL NORTH AMERICA, INC. | GREENVILLE, Montcalm, MI | Pass | State |
| 2021-11-10 | LSP COTTAGE GROVE COGENERATION FACILITY | COTTAGE GROVE, Washington, MN | Pass | State |
| 2021-11-10 | OWENS-CORNING STATELINE | JOPLIN, Jasper, MO | Fail | State |
| 2021-11-10 | BASF AGRICULTURAL SOLUTIONS US LLC | PALMYRA, Marion, MO | Pass | State |
| 2021-11-10 | LHOIST NORTH AMERICA | SAINTE GENEVIEVE, Ste. Genevieve, MO | Pass | State |
| 2021-11-10 | CHEVRON USA INC, CHEVRON PRODUCTS COMPANY, PASCAGOULA REFINERY | PASCAGOULA, Jackson, MS | Pass | State |
| 2021-11-10 | WESTROCK KRAFT PAPER, LLC | ROANOKE RAPIDS, Halifax, NC | Pass | State |
| 2021-11-10 | NORTH CAROLINA STATE UNIVERSITY | RALEIGH, Wake, NC | Pass | State |
| 2021-11-10 | FOUR DINKUS COMPRESSOR STATION GCP4-3091 | ARTESIA, Eddy, NM | Pass | State |
| 2021-11-10 | PCS NITROGEN OHIO, L.P. — high-priority violation on file | LIMA, Allen, OH | Pass | State |
| 2021-11-10 | PCS NITROGEN OHIO, L.P. — high-priority violation on file | LIMA, Allen, OH | Pass | State |
| 2021-11-10 | BARRETT PAVING - MIDDLETOWN ASPHALT | MIDDLETOWN, Butler, OH | Pass | State |
| 2021-11-10 | EMERY OLEOCHEMICALS LLC | CINCINNATI, Hamilton, OH | Pass | State |
| 2021-11-10 | EMERY OLEOCHEMICALS LLC | CINCINNATI, Hamilton, OH | Pass | State |
| 2021-11-10 | ET GATHERING PROCESSING LLC / FAY COMPRESSOR STATION | OAKWOOD, Dewey, OK | Pass | State |
| 2021-11-10 | ET GATHERING PROCESSING LLC / CYCLONE COMPRESSOR STATION | SEILING, Dewey, OK | Pass | State |
| 2021-11-10 | SOUTHERN STAR CTL GAS PIPELINE INC / BLACKWELL COMPRESSOR STATION — high-priority violation on file | BLACKWELL, Kay, OK | Pass | State |
| 2021-11-10 | MARKWEST OKLAHOMA GAS CO LLC / KINGFISHER COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-11-10 | MARKWEST OKLAHOMA GAS CO LLC / KINGFISHER COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-11-10 | SNYDER BROS INC/AMBROSE COMP STA | ADRIAN, Armstrong, PA | Pass | State |
| 2021-11-10 | DORCHESTER BIOMASS LLC | HARLEYVILLE, Dorchester, SC | Pass | State |
| 2021-11-10 | VALERO PARTNERS MEMPHIS, LLC-MEMPHIS TRUCK RACK | MEMPHIS, Shelby, TN | Pass | Local |
| 2021-11-10 | FREESTONE FIELD | DONIE, Freestone, TX | Pass | State |
| 2021-11-10 | FREESTONE FIELD | DONIE, Freestone, TX | Pass | State |
| 2021-11-10 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2021-11-10 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2021-11-10 | AMAZON DATA SERVICES, INC. IAD-150 IAD-151 IAD-152 | CHANTILLY, Loudoun, VA | Pass | State |
| 2021-11-10 | WESTROCK CP LLC - HOPEWELL | HOPEWELL, Hopewell (city), VA | Pass | State |
| 2021-11-10 | WESTROCK CP LLC - HOPEWELL | HOPEWELL, Hopewell (city), VA | Pass | State |
| 2021-11-10 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2021-11-10 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2021-11-10 | WAUPACA FOUNDRY INC - PLANT 1 | WAUPACA, Waushara, WI | Pass | State |
| 2021-11-10 | MONONGAHELA POWER COMPANY, HARRISON STATION | HAYWOOD, Harrison, WV | Pass | State |
| 2021-11-10 | ANTERO MIDSTREAM LLC, MIDDLEBOURNE V | MIDDLEBOURNE, Tyler, WV | Pass | State |
| 2021-11-10 | HOUSE CREEK MAINLINE COMPRESSOR STATION (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2021-11-10 | EAKIN COMPRESSOR STATION (MOUNTAIN WEST PIPELINE, LLC) | UINTA COUNTY, Uinta, WY | Pass | State |
| 2021-11-09 | BOISE WHITE PAPER LLC | JACKSON, Clarke, AL | Pass | State |
| 2021-11-09 | BOISE WHITE PAPER LLC | JACKSON, Clarke, AL | Pass | State |
| 2021-11-09 | DCP MIDSTREAM | CODEN, Mobile, AL | Pass | State |
| 2021-11-09 | NUCOR STEEL DECATUR LLC | TRINITY, Morgan, AL | Pass | State |
| 2021-11-09 | SOUTHERN NATURAL GAS | REFORM, Pickens, AL | Pass | State |
| 2021-11-09 | LION OIL COMPANY | EL DORADO, Union, AR | Pass | State |
| 2021-11-09 | LION OIL COMPANY | EL DORADO, Union, AR | Pass | State |
| 2021-11-09 | SO CAL GAS CO/PLAYA DEL REY STORAGE | PLAYA DEL REY, Los Angeles, CA | Pass | Local |
| 2021-11-09 | SO CAL GAS CO | VALENCIA, Los Angeles, CA | Pass | Local |
| 2021-11-09 | BUILDING MATERIALS MANUFACTURING CORP | FONTANA, San Bernardino, CA | Pass | Local |
| 2021-11-09 | PACTIV LLC | FRESNO, Fresno, CA | Pass | Local |
| 2021-11-09 | PACTIV LLC | FRESNO, Fresno, CA | Pass | Local |
| 2021-11-09 | PACTIV LLC | FRESNO, Fresno, CA | Pass | Local |
| 2021-11-09 | PACTIV LLC | FRESNO, Fresno, CA | Pass | Local |
| 2021-11-09 | PACTIV LLC | FRESNO, Fresno, CA | Pass | Local |
| 2021-11-09 | PACTIV LLC | FRESNO, Fresno, CA | Pass | Local |
| 2021-11-09 | PACTIV LLC | FRESNO, Fresno, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.