EPA Air · stack tests by year
Air-emissions stack tests in 2023
- 26,911Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
States, 2023
- California 7,676
- Ohio 2,800
- Florida 1,589
- Indiana 1,487
- Oklahoma 1,420
- New Mexico 1,087
- Georgia 1,057
- Pennsylvania 889
- Alabama 689
- Wyoming 670
- Mississippi 625
- Arkansas 602
- Iowa 453
- Colorado 436
- Texas 395
- Missouri 328
- North Carolina 302
- Washington 283
- Wisconsin 251
- Michigan 229
- Minnesota 228
- Delaware 224
- South Carolina 222
- West Virginia 218
- Kentucky 210
- Tennessee 200
- Utah 196
- Montana 177
- Virginia 170
- North Dakota 157
- Illinois 152
- Nebraska 152
- Alaska 140
- Nevada 127
- New York 123
- Maine 111
- Connecticut 108
- Arizona 102
- Louisiana 77
- Idaho 77
- Hawaii 72
- New Hampshire 58
- New Jersey 56
- South Dakota 54
- Maryland 49
- Kansas 45
- Oregon 44
- District of Columbia 36
- Massachusetts 27
- Rhode Island 20
- Puerto Rico 6
- Vermont 5
Other years
Air-emissions stack tests recorded in 2023
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | CHEVRON USA_(FORMERLY MIDWAY SUNSET OIL) — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | WOODLAND GENERATION STATION | MODESTO, Stanislaus, CA | Pass | Local |
| 2023-09-12 | BONANZA CREEK ENERGY - ANTELOPE SECTION | KERSEY 9.2 MI. E OF, Weld, CO | Pass | State |
| 2023-09-12 | PDC ENERGY - EVANS 7-26 PAD | EVANS, Weld, CO | Fail | State |
| 2023-09-12 | PDC ENERGY - EVANS 7-26 PAD | EVANS, Weld, CO | Fail | State |
| 2023-09-12 | DUNAMIS ENERGY - ORCA COMPRESSOR STATION | SEVERANCE 3.3 MI. N OF, Weld, CO | Pass | State |
| 2023-09-12 | SIKORSKY AIRCRAFT - MAIN PLANT | STRATFORD, Fairfield, CT | Pass | State |
| 2023-09-12 | WALLINGFORD ENERGY, LLC | WALLINGFORD, New Haven, CT | Pass | State |
| 2023-09-12 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2023-09-12 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2023-09-12 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2023-09-12 | DELAWARE CITY REFINING CO-DELAWARE CITY — high-priority violation on file | DELAWARE CITY, New Castle, DE | Pass | State |
| 2023-09-12 | AIR LIQUIDE ADVANCED SEPARATIONS, NEWPORT PLANT | NEWPORT, New Castle, DE | Pass | State |
| 2023-09-12 | FLORIDA POWER & LIGHT COMPANY | PENSACOLA, Escambia, FL | Pass | State |
| 2023-09-12 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2023-09-12 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2023-09-12 | LAKELAND ELECTRIC | LAKELAND, Polk, FL | Pass | State |
| 2023-09-12 | LANGBOARD OSB, QUITMAN | QUITMAN, Brooks, GA | Pass | State |
| 2023-09-12 | LANGBOARD OSB, QUITMAN | QUITMAN, Brooks, GA | Pass | State |
| 2023-09-12 | CLEARWATER PAPER CORPORATION - AUGUSTA MILL — high-priority violation on file | AUGUSTA, Richmond, GA | Pass | State |
| 2023-09-12 | RAYONIER PERFORMANCE FIBERS, LLC | JESUP, Wayne, GA | Pass | State |
| 2023-09-12 | RAYONIER PERFORMANCE FIBERS, LLC | JESUP, Wayne, GA | Pass | State |
| 2023-09-12 | HECO - KAHE | KAPOLEI, Honolulu, HI | Pass | State |
| 2023-09-12 | CLOW VALVE COMPANY | OSKALOOSA, Mahaska, IA | Pass | State |
| 2023-09-12 | CLOW VALVE COMPANY | OSKALOOSA, Mahaska, IA | Pass | State |
| 2023-09-12 | BUSCH AG RESOURCES INC-MALT PLANT | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2023-09-12 | RUVEON - SODA SPRINGS PLANT (TV FACILITY) | SODA SPRINGS, Caribou, ID | Pass | State |
| 2023-09-12 | IDAHO FOREST GROUP LLC - GRANGEVILLE | GRANGEVILLE, Idaho, ID | Pass | State |
| 2023-09-12 | KOPPERS CARBON MATERIALS LLC — high-priority violation on file | CICERO, Cook, IL | Pass | State |
| 2023-09-12 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | GARY, Lake, IN | Pass | State |
| 2023-09-12 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | GARY, Lake, IN | Pass | State |
| 2023-09-12 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | GARY, Lake, IN | Pass | State |
| 2023-09-12 | RIETH RILEY CONSTRUCTION COMPANY INCORPORATED | GARY, Lake, IN | Pass | State |
| 2023-09-12 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Fail | State |
| 2023-09-12 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-12 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-12 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Fail | State |
| 2023-09-12 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-12 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-12 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-12 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-12 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-12 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2023-09-12 | NESTLE USA INC | ANDERSON, Madison, IN | Pass | State |
| 2023-09-12 | INDIANAPOLIS POWER & LIGHT COMPANY DBA AES INDIANA - HARDING — high-priority violation on file | INDIANAPOLIS, Marion, IN | Pass | State |
| 2023-09-12 | MPLX TERMINALS LLC - LEXINGTON TERMINAL | LEXINGTON, Fayette, KY | Pass | State |
| 2023-09-12 | MPLX TERMINALS LLC - LEXINGTON TERMINAL | LEXINGTON, Fayette, KY | Pass | State |
| 2023-09-12 | LOGAN ALUMINUM INC | RUSSELLVILLE, Logan, KY | Pass | State |
| 2023-09-12 | LOGAN ALUMINUM INC | RUSSELLVILLE, Logan, KY | Pass | State |
| 2023-09-12 | BUCKEYE TERMINALS LLC | LOUISVILLE, Jefferson, KY | Pass | Local |
| 2023-09-12 | VENTURE GLOBAL CALCASIEU PASS LLC - CALCASIEU PASS LNG PROJECT | CAMERON, Cameron, LA | Pass | State |
| 2023-09-12 | DOMINION TRANSMISSION, INC | MIDDLETOWN, Frederick, MD | Pass | State |
| 2023-09-12 | WOODLAND PULP LLC — high-priority violation on file | BAILEYVILLE, TOWN OF, Washington, ME | Pass | State |
| 2023-09-12 | NEXTEER AUTOMOTIVE CORPORATION | SAGINAW, Saginaw, MI | Pass | State |
| 2023-09-12 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | CHINA, St. Clair, MI | Pass | State |
| 2023-09-12 | CONSUMERS ENERGY - ST. CLAIR COMPRESSOR STATION | IRA, St. Clair, MI | Pass | State |
| 2023-09-12 | BLUEWATER GAS STORAGE FACILITY - COLUMBUS | COLUMBUS, St. Clair, MI | Pass | State |
| 2023-09-12 | EES COKE BATTERY, LLC — high-priority violation on file | DETROIT, Wayne, MI | Pass | State |
| 2023-09-12 | MINNESOTA SOYBEAN PROCESSORS | BREWSTER, Nobles, MN | Pass | State |
| 2023-09-12 | SYENSQO DBA CYTEC ENGINEERED MATERIALS LNC | WINONA, Winona, MN | Pass | State |
| 2023-09-12 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Fail | State |
| 2023-09-12 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-12 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-12 | EP ENGINEERED CLAYS CORPORATION — high-priority violation on file | JACKSON, Hinds, MS | Pass | State |
| 2023-09-12 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-12 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
| 2023-09-12 | CALEDONIA ENERGY PARTNERS LLC, CALEDONIA GAS STORAGE FACILITY | CALEDONIA, Lowndes, MS | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.