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 |
|---|---|---|---|---|
| 2023-10-30 | POLYFOAM CORPORATION — high-priority violation on file | NORTHBRIDGE, Worcester, MA | Pass | State |
| 2023-10-30 | CAROLINA TREE AND LANDSCAPING | SUPPLY, Brunswick, NC | Pass | State |
| 2023-10-30 | OPPD NEBRASKA CITY STATION | NEBRASKA CITY, Otoe, NE | N/A | State |
| 2023-10-30 | TIGER COMPRESSOR STATION — high-priority violation on file | MALAGA, Eddy, NM | Pass | State |
| 2023-10-30 | NORTH VALMY GENERATING STATION | VALMY, Humboldt, NV | Pass | State |
| 2023-10-30 | ET GATHERING PROCESSING LLC / MOON COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2023-10-30 | ET GATHERING PROCESSING LLC / MOON COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2023-10-30 | ONEOK FIELD SERVICES CO LLC / REDTAIL COMPRESSOR STATION | LINDSAY, Garvin, OK | Pass | State |
| 2023-10-30 | PEOPLES ELECTRIC COOP / BUZZARD FLOP | GERTY, Hughes, OK | Pass | State |
| 2023-10-30 | DIVERSIFIED PRODUCTION LLC / DOVER UNIT TRELLIUM 1807 1OH 11 DOVER | HENNESSEY, Kingfisher, OK | Pass | State |
| 2023-10-30 | EQM GATHERING OPCO LLC/SGL 179 DEHY | NEW FREEOIRT, Greene, PA | Pass | State |
| 2023-10-30 | PORT TOWNSEND PAPER CORPORATION — high-priority violation on file | PORT TOWNSEND, Jefferson, WA | Pass | State |
| 2023-10-29 | HILCORP ALASKA, LLC / GATHERING CENTER #2 (GC 2) | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2023-10-28 | HECLA GREENS CREEK MINING COMPANY (HGC / HECLA GREENS CREEK MINE | JUNEAU, Juneau City and Borough, AK | Fail | State |
| 2023-10-28 | HECLA GREENS CREEK MINING COMPANY (HGC / HECLA GREENS CREEK MINE | JUNEAU, Juneau City and Borough, AK | Pass | State |
| 2023-10-28 | HECLA GREENS CREEK MINING COMPANY (HGC / HECLA GREENS CREEK MINE | JUNEAU, Juneau City and Borough, AK | Pass | State |
| 2023-10-28 | HECLA GREENS CREEK MINING COMPANY (HGC / HECLA GREENS CREEK MINE | JUNEAU, Juneau City and Borough, AK | Pass | State |
| 2023-10-28 | CARBO CERAMICS, INC. - TOOMSBORO PLANT — high-priority violation on file | TOOMSBORO, Wilkinson, GA | Pass | State |
| 2023-10-28 | CARBO CERAMICS, INC. - TOOMSBORO PLANT — high-priority violation on file | TOOMSBORO, Wilkinson, GA | Pass | State |
| 2023-10-28 | CARBO CERAMICS, INC. - TOOMSBORO PLANT — high-priority violation on file | TOOMSBORO, Wilkinson, GA | Pass | State |
| 2023-10-28 | CARBO CERAMICS, INC. - TOOMSBORO PLANT — high-priority violation on file | TOOMSBORO, Wilkinson, GA | Pass | State |
| 2023-10-28 | CARBO CERAMICS, INC. - TOOMSBORO PLANT — high-priority violation on file | TOOMSBORO, Wilkinson, GA | Pass | State |
| 2023-10-28 | CARBO CERAMICS, INC. - TOOMSBORO PLANT — high-priority violation on file | TOOMSBORO, Wilkinson, GA | Pass | State |
| 2023-10-28 | CARBO CERAMICS, INC. - TOOMSBORO PLANT — high-priority violation on file | TOOMSBORO, Wilkinson, GA | Pass | State |
| 2023-10-28 | NUCOR STEEL — high-priority violation on file | CRAWFORDSVILLE, Montgomery, IN | Pass | State |
| 2023-10-28 | NUCOR STEEL — high-priority violation on file | CRAWFORDSVILLE, Montgomery, IN | Pass | State |
| 2023-10-28 | NUCOR STEEL — high-priority violation on file | CRAWFORDSVILLE, Montgomery, IN | Pass | State |
| 2023-10-28 | NUCOR STEEL — high-priority violation on file | CRAWFORDSVILLE, Montgomery, IN | Pass | State |
| 2023-10-27 | HILCORP ALASKA, LLC / FLOW STATION #1 (FS 1) — high-priority violation on file | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2023-10-27 | HILCORP ALASKA, LLC / FLOW STATION #1 (FS 1) — high-priority violation on file | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2023-10-27 | W&T OFFSHORE, INC. | MOBILE BAY, Mobile, AL | Pass | State |
| 2023-10-27 | LEHIGH CEMENT COMPANY | LEEDS, Jefferson, AL | Pass | Local |
| 2023-10-27 | CANYON POWER PLANT | ANAHEIM, Orange, CA | Pass | Local |
| 2023-10-27 | ELK CORPORATION OF TEXAS | SHAFTER, Kern, CA | Fail | Local |
| 2023-10-27 | ELK CORPORATION OF TEXAS | SHAFTER, Kern, CA | Fail | Local |
| 2023-10-27 | ELK CORPORATION OF TEXAS | SHAFTER, Kern, CA | Fail | Local |
| 2023-10-27 | ELK CORPORATION OF TEXAS | SHAFTER, Kern, CA | Fail | Local |
| 2023-10-27 | ELK CORPORATION OF TEXAS | SHAFTER, Kern, CA | Fail | Local |
| 2023-10-27 | ELK CORPORATION OF TEXAS | SHAFTER, Kern, CA | Fail | Local |
| 2023-10-27 | ENTERPRISE PRODUCTS OP- JACKRABBIT CS | PARACHUTE 9.5 MI. NW OF, Garfield, CO | Pass | State |
| 2023-10-27 | ENTERPRISE PRODUCTS OP- JACKRABBIT CS | PARACHUTE 9.5 MI. NW OF, Garfield, CO | Pass | State |
| 2023-10-27 | ARMSTRONG WORLD INDUSTRIES, INC. | PENSACOLA, Escambia, FL | Pass | State |
| 2023-10-27 | ARMSTRONG WORLD INDUSTRIES, INC. | PENSACOLA, Escambia, FL | Pass | State |
| 2023-10-27 | ARMSTRONG WORLD INDUSTRIES, INC. | PENSACOLA, Escambia, FL | Pass | State |
| 2023-10-27 | CLEARWATER PAPER CORP-PPD | LEWISTON, Nez Perce, ID | Pass | State |
| 2023-10-27 | NORTH VERNON INDUSTRY CORPORATION | NORTH VERNON, Jennings, IN | Pass | State |
| 2023-10-27 | NORTH VERNON INDUSTRY CORPORATION | NORTH VERNON, Jennings, IN | Pass | State |
| 2023-10-27 | US STEEL CORPORATION GARY WORKS — high-priority violation on file | GARY, Lake, IN | Pass | State |
| 2023-10-27 | US STEEL CORPORATION GARY WORKS — high-priority violation on file | GARY, Lake, IN | Pass | State |
| 2023-10-27 | CLEVELAND-CLIFFS STEEL CORPORATION, ROCKPORT WORKS | ROCKPORT, Spencer, IN | Pass | State |
| 2023-10-27 | CLEVELAND-CLIFFS STEEL CORPORATION, ROCKPORT WORKS | ROCKPORT, Spencer, IN | Pass | State |
| 2023-10-27 | CLEVELAND-CLIFFS STEEL CORPORATION, ROCKPORT WORKS | ROCKPORT, Spencer, IN | Pass | State |
| 2023-10-27 | THE JACKSON LABORATORY | BAR HARBOR, Hancock, ME | Pass | State |
| 2023-10-27 | ROBBINS LUMBER, INC. | SEARSMONT, Waldo, ME | Pass | State |
| 2023-10-27 | HOUSE OF RAEFORD FARMS, INC. - WALLACE DIVISION | TEACHEY, Duplin, NC | Pass | State |
| 2023-10-27 | CORNING INCORPORATED - CANTON PLANT | DEKALB, St. Lawrence, NY | Pass | State |
| 2023-10-27 | EOG RESOURCES, INC. - LEEPER 10-14-7 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-10-27 | EOG RESOURCES, INC. - LEEPER 10-14-7 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-10-27 | EOG RESOURCES, INC. - LEEPER 10-14-7 PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-10-27 | EOG RESOURCES, INC. - WENDELL CR MON PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-10-27 | EOG RESOURCES, INC. - WENDELL CR MON PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-10-27 | EOG RESOURCES, INC. - WENDELL CR MON PAD | LEESVILLE, Carroll, OH | Pass | State |
| 2023-10-27 | PEOPLES ELECTRIC COOP / TARGA — high-priority violation on file | CENTRAHOMA, Coal, OK | Pass | State |
| 2023-10-27 | MARKWEST OKLAHOMA GAS CO LLC / ALPHA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-10-27 | MARKWEST OKLAHOMA GAS CO LLC / SIGMA COMPRESSOR STATION | KINGFISHER, Kingfisher, OK | Pass | State |
| 2023-10-27 | EOG RESOURCES INC / DOROTHY COMPRESSOR STATION | BLANCHARD, McClain, OK | Pass | State |
| 2023-10-27 | TOM STACK LLC / BENNETT COMPRESSOR STATION | STILLWATER, Payne, OK | Pass | State |
| 2023-10-27 | SAINT FRANCIS HEALTH SYSTEM / 6161 S YALE ST FRANCIS HOSPITAL MAIN | TULSA, Tulsa, OK | Pass | State |
| 2023-10-27 | ENERGY TRANSF MKT & TERM LP/MARCUS HOOK TERM — high-priority violation on file | MARCUS HOOK, Delaware, PA | Pass | State |
| 2023-10-27 | WILLIAMS FIELD SVC CO LLC/JONES COMP STA | FRIENDSVILLE, Susquehanna, PA | Pending | State |
| 2023-10-27 | CHILDRENS HOSP OF PHILA/ PHILA | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2023-10-27 | CHILDRENS HOSP OF PHILA/ PHILA | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2023-10-27 | CHILDRENS HOSP OF PHILA/ PHILA | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2023-10-27 | CHILDRENS HOSP OF PHILA/ PHILA | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2023-10-27 | CHILDRENS HOSP OF PHILA/ PHILA | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2023-10-27 | CHILDRENS HOSP OF PHILA/ PHILA | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2023-10-27 | CAROLINA MOUNTAIN LAND SOLUTIONS LLC — high-priority violation on file | WEST UNION, Oconee, SC | Pending | State |
| 2023-10-27 | BMW MANUFACTURING CO LLC | GREER, Greenville, SC | Pass | State |
| 2023-10-27 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2023-10-27 | AMAZON DATA SERVICES INC - IAD-163/164/174 | STERLING, Loudoun, VA | Pass | State |
| 2023-10-27 | GLOBALFOUNDRIES US 2 LLC | ESSEX, Chittenden, VT | Pass | State |
| 2023-10-27 | QUAD/GRAPHICS INC - LOMIRA | LOMIRA, Dodge, WI | Pass | State |
| 2023-10-27 | HF SINCLAIR PARCO REFINING LLC — high-priority violation on file | SINCLAIR, Carbon, WY | Pass | State |
| 2023-10-26 | WEST FRASER HUGULEY | HUGULEY, Chambers, AL | Fail | State |
| 2023-10-26 | WEST FRASER HUGULEY | HUGULEY, Chambers, AL | Pass | State |
| 2023-10-26 | TVA — high-priority violation on file | TUSCUMBIA, Colbert, AL | Pass | State |
| 2023-10-26 | INTERNATIONAL PAPER COMPANY — high-priority violation on file | SELMA, Dallas, AL | Pass | State |
| 2023-10-26 | INTERNATIONAL PAPER COMPANY — high-priority violation on file | SELMA, Dallas, AL | Pass | State |
| 2023-10-26 | INTERNATIONAL PAPER COMPANY — high-priority violation on file | SELMA, Dallas, AL | Pass | State |
| 2023-10-26 | QUIKRETE CONSTRUCTION MATERIALS, LLC — high-priority violation on file | CALERA, Shelby, AL | Pass | State |
| 2023-10-26 | QUIKRETE CONSTRUCTION MATERIALS, LLC — high-priority violation on file | CALERA, Shelby, AL | Pass | State |
| 2023-10-26 | ENABLE MISSISSIPPI RIVER TRANSMISSION, LLC - FOUNTAIN HILL COMPRESSOR STATION | HAMBURG, Ashley, AR | Pass | State |
| 2023-10-26 | QUEMETCO INC | CITY OF INDUSTRY, Los Angeles, CA | Pass | Local |
| 2023-10-26 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-26 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-26 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-26 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-26 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-26 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
| 2023-10-26 | CHEVRON USA INC- HEAVY OIL PRODUCTION | COALINGA, Fresno, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.