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 |
|---|---|---|---|---|
| 2021-11-09 | ET GATHERING PROCESSING LLC / NALA COMPRESSOR STATION | GREENFIELD, Blaine, OK | Pass | State |
| 2021-11-09 | ONEOK FIELD SERVICES CO LLC / DAKOTA COMPRESSOR STATION | GEARY, Canadian, OK | Pass | State |
| 2021-11-09 | ONEOK FIELD SERVICES CO LLC / DAKOTA COMPRESSOR STATION | GEARY, Canadian, OK | Pass | State |
| 2021-11-09 | BLOMMER CHOCOLATE CO/E GREENVILLE PLT | EAST GREENVILLE, Montgomery, PA | Pass | State |
| 2021-11-09 | FRANKLIN & MARSHALL COLL/LANCASTER | LANCASTER, Lancaster, PA | Pass | State |
| 2021-11-09 | REGENCY MARCELLUS GAS GATHERING/CANOE RUN COMP STA | SALLADASBURG, Lycoming, PA | Pass | State |
| 2021-11-09 | MAUSER USA LLC/WARREN PLT | WARREN, Warren, PA | Pass | State |
| 2021-11-09 | PA STATE UNIV/WPSU TOWER | CLEARFIELD, Clearfield, PA | Pass | State |
| 2021-11-09 | PA STATE UNIV/WPSU TOWER | CLEARFIELD, Clearfield, PA | Pass | State |
| 2021-11-09 | SANTEE COOPER CROSS GENERATING STATION — high-priority violation on file | PINEVILLE, Berkeley, SC | Pass | State |
| 2021-11-09 | TENNESSEE VALLEY AUTHORITY - GALLATIN FOSSIL PLANT | GALLATIN, Sumner, TN | Pass | State |
| 2021-11-09 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2021-11-09 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2021-11-09 | AQUATIC COMPANY | SOUTH BOSTON, Halifax, VA | Pass | State |
| 2021-11-09 | VANTAGE DATA CENTERS VA11, VA12, VA13, VA14, & VA15 | STERLING, Loudoun, VA | Pass | State |
| 2021-11-09 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | Pass | State |
| 2021-11-09 | CNG GREEN BAY — high-priority violation on file | GREEN BAY, Brown, WI | Pass | State |
| 2021-11-09 | FLINT HILLS RESOURCES PINE BEND LLC - WAUPUN FACILITY | WAUPUN, Fond du Lac, WI | Pass | State |
| 2021-11-09 | AHLSTROM RHINELANDER LLC | RHINELANDER, Outagamie, WI | Pass | State |
| 2021-11-09 | MONONGAHELA POWER COMPANY, HARRISON STATION | HAYWOOD, Harrison, WV | Pass | State |
| 2021-11-09 | ARMSTRONG WORLD INDUSTRIES, INC., MILLWOOD | MILLWOOD, Jackson, WV | Pass | State |
| 2021-11-09 | MARKWEST LIBERTY MIDSTREAM & RESOURCES, L.L.C., MAJORSVILLE | DALLAS, Marshall, WV | Pass | State |
| 2021-11-09 | MARY'S DRAW (THUNDER CREEK GAS SERVICES) | CAMPBELL COUNTY, Campbell, WY | Pass | State |
| 2021-11-08 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2021-11-08 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2021-11-08 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2021-11-08 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2021-11-08 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2021-11-08 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2021-11-08 | BOISE WHITE PAPER LLC | JACKSON, Clarke, AL | Pass | State |
| 2021-11-08 | NUCOR YAMATO STEEL COMPANY | BLYTHEVILLE, Mississippi, AR | Pass | State |
| 2021-11-08 | MOSS LANDING POWER COMPANY LLC (FRMLY DYNEGY MOSS LANDING LLC) | MOSS LANDING, Monterey, CA | Pass | Local |
| 2021-11-08 | ORLANDO UTILITIES COMMISSION | ORLANDO, Orange, FL | Pass | State |
| 2021-11-08 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-08 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-08 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-11-08 | DIXIELAND EQUIPMENT SALES DBA DIXIELAND PALLET COMPANY — high-priority violation on file | TALMO, Jackson, GA | Pass | State |
| 2021-11-08 | ROCK ISLAND ARSENAL — high-priority violation on file | ROCK ISLAND, Rock Island, IL | Pass | State |
| 2021-11-08 | FCA US LLC - DETROIT ASSEMBLY COMPLEX — high-priority violation on file | DETROIT, Wayne, MI | Pass | State |
| 2021-11-08 | FCA US LLC - DETROIT ASSEMBLY COMPLEX — high-priority violation on file | DETROIT, Wayne, MI | Pass | State |
| 2021-11-08 | KNIFE RIVER CENTRAL MINNESOTA | SAUK RAPIDS, Benton, MN | Pass | State |
| 2021-11-08 | WEYERHAEUSER-EVERGREEN — high-priority violation on file | KALISPELL, Flathead, MT | Pass | State |
| 2021-11-08 | WEYERHAEUSER-EVERGREEN — high-priority violation on file | KALISPELL, Flathead, MT | Pass | State |
| 2021-11-08 | WEYERHAEUSER-EVERGREEN — high-priority violation on file | KALISPELL, Flathead, MT | Pass | State |
| 2021-11-08 | WEYERHAEUSER-EVERGREEN — high-priority violation on file | KALISPELL, Flathead, MT | Pass | State |
| 2021-11-08 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | Pass | State |
| 2021-11-08 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | Pass | State |
| 2021-11-08 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | Pass | State |
| 2021-11-08 | ASH GROVE CEMENT | CLANCY, Jefferson, MT | Pass | State |
| 2021-11-08 | CAESARS ENTERTAINMENT INCORPORATED - CAESARS CONSOLIDATED PROPERTIES | LAS VEGAS, Clark, NV | Pass | Local |
| 2021-11-08 | CAESARS ENTERTAINMENT INCORPORATED - CAESARS CONSOLIDATED PROPERTIES | LAS VEGAS, Clark, NV | Pass | Local |
| 2021-11-08 | ET GATHERING PROCESSING LLC / NALA COMPRESSOR STATION | GREENFIELD, Blaine, OK | Pass | State |
| 2021-11-08 | ET GATHERING PROCESSING LLC / NALA COMPRESSOR STATION | GREENFIELD, Blaine, OK | Pass | State |
| 2021-11-08 | THOROUGHBRED GATHERING LLC / CYCLONE COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2021-11-08 | THOROUGHBRED GATHERING LLC / CYCLONE COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2021-11-08 | ONEOK FIELD SERVICES CO LLC / DAKOTA COMPRESSOR STATION | GEARY, Canadian, OK | Pass | State |
| 2021-11-08 | ONEOK FIELD SERVICES CO LLC / DAKOTA COMPRESSOR STATION | GEARY, Canadian, OK | Pass | State |
| 2021-11-08 | FOUNDATION ENERGY MANAGEMENT LLC / NORTHRIDGE GAS PLANT | GERTY, Hughes, OK | Pass | State |
| 2021-11-06 | CLEARWATER PAPER CORPORATION - AUGUSTA MILL — high-priority violation on file | AUGUSTA, Richmond, GA | Fail | State |
| 2021-11-06 | AMRIZE CEMENT INC/WHITEHALL PLT — high-priority violation on file | WHITEHALL, Lehigh, PA | Pass | State |
| 2021-11-06 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2021-11-05 | DESOTO GATHERING COMPANY LLC - SOUTH BROWNIE CPF 2 | HATTIEVILLE, Conway, AR | Pass | State |
| 2021-11-05 | DESOTO GATHERING COMPANY, LLC - STURGEON CPF-3 | CENTER RIDGE, Conway, AR | Pass | State |
| 2021-11-05 | CITY OF SACRAMENTO - 28TH ST LANDFILL | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | PHILLIPS 66 PIPELINE LLC | MCKITTRICK, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2021-11-05 | AERA ENERGY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.