EPA Air · stack tests by year
Air-emissions stack tests in 2020
- 33,437Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2020
- California 15,352
- Ohio 2,194
- Florida 1,532
- Oklahoma 1,517
- Indiana 1,473
- Georgia 1,147
- New Mexico 846
- Pennsylvania 725
- Alabama 674
- Texas 617
- Missouri 607
- Arkansas 589
- Mississippi 438
- Colorado 429
- Washington 407
- Iowa 355
- North Carolina 274
- Wyoming 235
- Wisconsin 229
- Michigan 222
- South Carolina 221
- Montana 217
- Minnesota 213
- Delaware 211
- Kentucky 184
- West Virginia 175
- Utah 158
- Tennessee 149
- Kansas 144
- Nebraska 142
- Alaska 141
- Maine 136
- Nevada 134
- Virginia 132
- Illinois 129
- North Dakota 129
- New Jersey 122
- Connecticut 110
- Arizona 97
- New York 93
- Hawaii 84
- Louisiana 83
- Idaho 81
- New Hampshire 72
- Maryland 46
- South Dakota 46
- Oregon 39
- Rhode Island 30
- District of Columbia 30
- Vermont 17
- Massachusetts 7
- Puerto Rico 3
Other years
Air-emissions stack tests recorded in 2020
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2020-10-05 | SI GROUP INC ORANGEBURG | ORANGEBURG, Orangeburg, SC | Pass | State |
| 2020-10-05 | SIMCOE - IRON HORSE CENTRAL DELIVERY POINT | SOUTHERN UTE RESERVATION, La Plata, CO | Pass | State |
| 2020-10-05 | PORT TOWNSEND PAPER CORPORATION — high-priority violation on file | PORT TOWNSEND, Jefferson, WA | Pass | State |
| 2020-10-05 | NUCOR STEEL SEATTLE INC | SEATTLE, King, WA | Pass | Local |
| 2020-10-05 | NUCOR STEEL SEATTLE INC | SEATTLE, King, WA | Pass | Local |
| 2020-10-05 | NUCOR STEEL SEATTLE INC | SEATTLE, King, WA | Pass | Local |
| 2020-10-05 | NUCOR STEEL SEATTLE INC | SEATTLE, King, WA | Pass | Local |
| 2020-10-05 | NUCOR STEEL SEATTLE INC | SEATTLE, King, WA | Pass | Local |
| 2020-10-05 | WILLIAMS OHIO VALLEY MIDSTREAM LLC, BURCH RIDGE ST | MOUNDSVILLE, Marshall, WV | Pass | State |
| 2020-10-04 | SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file | COMMERCE CITY, Adams, CO | Pass | State |
| 2020-10-04 | SUNCOR ENERGY - DENVER REFINERY — high-priority violation on file | COMMERCE CITY, Adams, CO | Pass | State |
| 2020-10-04 | WOOL HEAD CENTRAL TB | EUNICE, Lea, NM | Pass | State |
| 2020-10-04 | AO6 BATTERY | MONUMENT, Lea, NM | Pass | State |
| 2020-10-03 | DAGGER LAKE NORTH TB | EUNICE, Lea, NM | Pass | State |
| 2020-10-03 | DAGGER LAKE NORTH TB | EUNICE, Lea, NM | Pass | State |
| 2020-10-02 | ALBEMARLE CORPORATION-SOUTH PLANT | MAGNOLIA, Columbia, AR | Pass | State |
| 2020-10-02 | ALBEMARLE CORPORATION-SOUTH PLANT | MAGNOLIA, Columbia, AR | Pass | State |
| 2020-10-02 | ALBEMARLE CORPORATION-SOUTH PLANT | MAGNOLIA, Columbia, AR | Pass | State |
| 2020-10-02 | ALTERNATIVE WASTE MANAGEMENT LLC | MAYFLOWER, Faulkner, AR | Pass | State |
| 2020-10-02 | WEBER METALS INC | PARAMOUNT, Los Angeles, CA | Pass | Local |
| 2020-10-02 | COLTON POWER, LP | COLTON, San Bernardino, CA | Pass | Local |
| 2020-10-02 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2020-10-02 | VALERO RENEWABLE FUELS CO LLC-HARTLEY — high-priority violation on file | HARTLEY, O'Brien, IA | Pass | State |
| 2020-10-02 | VALERO RENEWABLE FUELS CO LLC-HARTLEY — high-priority violation on file | HARTLEY, O'Brien, IA | Pass | State |
| 2020-10-02 | LINWOOD MINING & MINERALS CORP | DAVENPORT, Scott, IA | Pass | State |
| 2020-10-02 | ILLINOIS POWER GENERATING CO | NEWTON, Jasper, IL | Pass | State |
| 2020-10-02 | CATERPILLAR INCORPORATED | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2020-10-02 | CATERPILLAR INCORPORATED | LAFAYETTE, Tippecanoe, IN | Pass | State |
| 2020-10-02 | SCHMIDTLEIN EXCAVATING (PORTABLE) | PORTABLE, Undetermined, KS | Pass | State |
| 2020-10-02 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2020-10-02 | COLSTRIP STEAM ELECTRIC STATION | COLSTRIP, Rosebud, MT | Pass | State |
| 2020-10-02 | PCS PHOSPHATE COMPANY, INC. - AURORA | AURORA, Beaufort, NC | Pass | State |
| 2020-10-02 | BAXTER HEALTHCARE CORPORATION | MARION, McDowell, NC | Pass | State |
| 2020-10-02 | MIYAMURA COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2020-10-02 | MIYAMURA COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2020-10-02 | MIYAMURA COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2020-10-02 | RODNEY ROBINSON NORTH FACILITY | EUNICE, Lea, NM | Pass | State |
| 2020-10-02 | MERCHANT CENTRAL BATTERY | EUNICE, Lea, NM | Pass | State |
| 2020-10-02 | MERCHANT STATE UNIT NO 504H FACILITY | EUNICE, Lea, NM | Pass | State |
| 2020-10-02 | MATERIAL SCIENCES CORPORATION - CANFIELD | CANFIELD, Mahoning, OH | Pass | State |
| 2020-10-02 | SHELLY MATERIALS PLANT # 4132 — high-priority violation on file | TOLEDO, Lucas, OH | Pass | State |
| 2020-10-02 | SHELLY MATERIALS PLANT # 4132 — high-priority violation on file | TOLEDO, Lucas, OH | Pass | State |
| 2020-10-02 | SHELLY MATERIALS PLANT # 4132 — high-priority violation on file | TOLEDO, Lucas, OH | Pass | State |
| 2020-10-02 | BLUE RACER MIDSTREAM LLC - HFS#1 (CADIZ B) | CADIZ, Harrison, OH | Pass | State |
| 2020-10-02 | BLUE RACER MIDSTREAM LLC - HFS#1 (CADIZ B) | CADIZ, Harrison, OH | Pass | State |
| 2020-10-02 | BLUE RACER MIDSTREAM LLC - HFS#1 (CADIZ B) | CADIZ, Harrison, OH | Pass | State |
| 2020-10-02 | BLUE RACER MIDSTREAM LLC - HFS#3 (ATHENS B) | NEW ATHENS, Harrison, OH | Pass | State |
| 2020-10-02 | BLUE RACER MIDSTREAM LLC - HFS#3 (ATHENS B) | NEW ATHENS, Harrison, OH | Pass | State |
| 2020-10-02 | BLUE RACER MIDSTREAM LLC - HFS#3 (ATHENS B) | NEW ATHENS, Harrison, OH | Pass | State |
| 2020-10-02 | INR OHIO, LLC - BETTINGER WELL PAD | CALDWELL, Noble, OH | Pass | State |
| 2020-10-02 | INR OHIO, LLC - BETTINGER WELL PAD | CALDWELL, Noble, OH | Pass | State |
| 2020-10-02 | INR OHIO, LLC - BETTINGER WELL PAD | CALDWELL, Noble, OH | Pass | State |
| 2020-10-02 | MARKWEST OKLAHOMA GAS CO LLC / OKARCHE COMPRESSOR STATION | OKARCHE, Canadian, OK | Pass | State |
| 2020-10-02 | MARKWEST OKLAHOMA GAS CO LLC / OKARCHE COMPRESSOR STATION | OKARCHE, Canadian, OK | Pass | State |
| 2020-10-02 | UNBRIDLED RESOURCES LLC / WAYLAND 33 1H 33 3H 4H CTB | ARNETT, Ellis, OK | Pass | State |
| 2020-10-02 | UNBRIDLED RESOURCES LLC / TEDDY 1 CTB | ARNETT, Ellis, OK | Pass | State |
| 2020-10-02 | BCE MACH II LLC / ELLA COOK 2A OIL AND GAS FACILITY | ELMORE CITY, Garvin, OK | Pass | State |
| 2020-10-02 | MARKWEST OKLAHOMA GAS CO LLC / LOYAL COMPRESSOR STATION | LOYAL, Kingfisher, OK | Pass | State |
| 2020-10-02 | HEIDELBERG MTLS NORTHEAST PA/PENNS PARK PLT — high-priority violation on file | PENNS PARK, Bucks, PA | Pass | State |
| 2020-10-02 | DART CONTAINER CORP/E LAMPETER WHSE | LANCASTER, Lancaster, PA | Pass | State |
| 2020-10-02 | USS/CLAIRTON WORKS — high-priority violation on file | CLAIRTON, Allegheny, PA | Pass | Local |
| 2020-10-02 | CONSTELLATION GENERATION CO/SCHUYLKILL STA | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2020-10-02 | EQUINIX, LLC - ASHBURN | ASHBURN, Loudoun, VA | Pass | State |
| 2020-10-02 | SAINT-GOBAIN CERAMICS & PLASTICS, INC., BUCKHANNO — high-priority violation on file | BUCKHANNON, Upshur, WV | Pass | State |
| 2020-10-01 | ENERGY DEVELOPMENTS DECATUR, LLC | TRINITY, Morgan, AL | Pass | State |
| 2020-10-01 | MERCEDES-BENZ US INTERNATIONAL, INC. | VANCE, Tuscaloosa, AL | Pass | State |
| 2020-10-01 | TORRANCE REFINING COMPANY LLC | TORRANCE, Los Angeles, CA | Pass | Local |
| 2020-10-01 | TORRANCE REFINING COMPANY LLC | TORRANCE, Los Angeles, CA | Pass | Local |
| 2020-10-01 | TORRANCE REFINING COMPANY LLC | TORRANCE, Los Angeles, CA | Pass | Local |
| 2020-10-01 | WEBER METALS INC | PARAMOUNT, Los Angeles, CA | Pass | Local |
| 2020-10-01 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2020-10-01 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2020-10-01 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2020-10-01 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2020-10-01 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2020-10-01 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2020-10-01 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2020-10-01 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2020-10-01 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2020-10-01 | JR SIMPLOT | HELM, Fresno, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2020-10-01 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — 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.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in 2020. It lists 33,437 stack tests recorded nationwide in 2020.