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 |
|---|---|---|---|---|
| 2021-12-07 | CEDAR RAPIDS/LINN COUNTY SWA SITE 2 | MARION, Linn, IA | Pass | Local |
| 2021-12-07 | MARQUIS ENERGY LLC | HENNEPIN, Putnam, IL | Pass | State |
| 2021-12-07 | BERGE PLATING WORK INC | ROCK ISLAND, Rock Island, IL | Pass | State |
| 2021-12-07 | HEIDELBERG MATERIALS US CEMENT LLC | SELLERSBURG, Clark, IN | Pass | State |
| 2021-12-07 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2021-12-07 | DUKE ENERGY INDIANA LLC EDWARDSPORT GENERATING STATION | EDWARDSPORT, Knox, IN | Pass | State |
| 2021-12-07 | ANR PIPELINE COMPANY ST JOHN COMPRESSOR STATION | SAINT JOHN, Lake, IN | Pass | State |
| 2021-12-07 | DCP OPERATING - COMANCHE CO. #3 STATION (DEHY) (AIR) | COLDWATER, Comanche, KS | Pass | State |
| 2021-12-07 | FUTAMURA USA (AIR) — high-priority violation on file | TECUMSEH, Shawnee, KS | Pass | State |
| 2021-12-07 | EAST KY POWER COOP - BAVARIAN LGTE | WALTON, Boone, KY | Pass | State |
| 2021-12-07 | CENTURY ALUMINUM SEBREE LLC | ROBARDS, Henderson, KY | Pass | State |
| 2021-12-07 | VICINITY ENERGY LLC | BOSTON, CITY OF, Suffolk, MA | Pass | State |
| 2021-12-07 | RAVEN POWER FORT SMALLWOOD LLC | CURTIS BAY, Anne Arundel, MD | Pass | State |
| 2021-12-07 | WESTBROOK ENERGY CENTER, LLC | WESTBROOK, Cumberland, ME | Pass | State |
| 2021-12-07 | MARITIMES & NORTHEAST PIPELINE, L.L.C. | WESTBROOK, Cumberland, ME | Pass | State |
| 2021-12-07 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2021-12-07 | NEENAH PAPER - MICHIGAN INC | MUNISING, Alger, MI | Pass | State |
| 2021-12-07 | DTE ST. CLAIR / BELLE RIVER POWER PLANT — high-priority violation on file | CHINA, St. Clair, MI | Pass | State |
| 2021-12-07 | FORD MOTOR COMPANY - FLAT ROCK ASSEMBLY | FLAT ROCK, Wayne, MI | Fail | State |
| 2021-12-07 | PINE TREE ACRES, INC. | LENOX TOWNSHIP, Macomb, MI | Pass | State |
| 2021-12-07 | GOPHER RESOURCE LLC | EAGAN, Dakota, MN | Pass | State |
| 2021-12-07 | OWATONNA ENERGY STATION | OWATONNA, Steele, MN | Pass | State |
| 2021-12-07 | EMPIRE DISTRICT ELECTRIC CO. - STATE LINE POWER PLANT | JOPLIN, Jasper, MO | Pass | State |
| 2021-12-07 | NEW MADRID POWER PLANT-ASSOC ELEC COOP | MARSTON, New Madrid, MO | Pending | State |
| 2021-12-07 | GEORGIA PACIFIC MONTICELLO LLC | MONTICELLO, Lawrence, MS | Pass | State |
| 2021-12-07 | DRY CREEK FIELD STATION 056 | RED LODGE, Carbon, MT | Pass | State |
| 2021-12-07 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2021-12-07 | PCS PHOSPHATE COMPANY, INC. - AURORA | AURORA, Beaufort, NC | Pass | State |
| 2021-12-07 | UWHARRIE MOUNTAIN RENEWABLE ENERGY, LLC | MOUNT GILEAD, Montgomery, NC | Fail | State |
| 2021-12-07 | CMC STEEL NEW JERSEY | SAYREVILLE, Middlesex, NJ | Pass | State |
| 2021-12-07 | PECOS COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-12-07 | RDX FEDERAL COM 17-26S30E-C PAD | MALAGA, Eddy, NM | Pass | State |
| 2021-12-07 | TUCKER DRAW FED COM 9-4 - 26530E - A PAD | MALAGA, Eddy, NM | Pass | State |
| 2021-12-07 | MOSAIC COMPRESSOR STATION | LOVING, Eddy, NM | Pass | State |
| 2021-12-07 | MOCKINGBIRD CENTRAL GATHERING FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2021-12-07 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-12-07 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-12-07 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-12-07 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-12-07 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-12-07 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-12-07 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-12-07 | MILKY WAY COMPRESSOR STATION | JAL, Lea, NM | Pass | State |
| 2021-12-07 | LUNA ENERGY CENTER | DEMING, Luna, NM | Pass | State |
| 2021-12-07 | THOMPSON COMPRESSOR STATION | FLORA VISTA, San Juan, NM | Pass | State |
| 2021-12-07 | THOMPSON COMPRESSOR STATION | FLORA VISTA, San Juan, NM | Pass | State |
| 2021-12-07 | PARADISE COMPRESSOR STATION #3 | PARADISE VALLEY, Humboldt, NV | Pass | State |
| 2021-12-07 | U S GYPSUM CO OAKFIELD PLANT | OAKFIELD, Genesee, NY | Pass | State |
| 2021-12-07 | ASCENT RESOURCES - UTICA LLC - MINGO CRC JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2021-12-07 | ASCENT RESOURCES - UTICA LLC - MINGO CRC JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2021-12-07 | ASCENT RESOURCES - UTICA LLC - MINGO CRC JF | BLOOMINGDALE, Jefferson, OH | Pass | State |
| 2021-12-07 | ASCENT RESOURCES - UTICA LLC - PIERGALLINI SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2021-12-07 | ASCENT RESOURCES - UTICA LLC - PIERGALLINI SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2021-12-07 | ASCENT RESOURCES - UTICA LLC - PIERGALLINI SMF JF | DILLONVALE, Jefferson, OH | Pass | State |
| 2021-12-07 | CORIX CLEVELAND THERMAL GENERATING LP | CLEVELAND, Cuyahoga, OH | Pass | State |
| 2021-12-07 | ONEOK FIELD SERVICES CO LLC / PAYNE COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2021-12-07 | ONEOK FIELD SERVICES CO LLC / PAYNE COMPRESSOR STATION | WATONGA, Blaine, OK | Pass | State |
| 2021-12-07 | WYNNEWOOD REFINING CO LLC / WYNNEWOOD REFINERY — high-priority violation on file | WYNNEWOOD, Garvin, OK | Pass | State |
| 2021-12-07 | BCE MACH III MIDSTREAM HOLDINGS LLC / LINCOLN GAS PLANT — high-priority violation on file | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-12-07 | BCE MACH III MIDSTREAM HOLDINGS LLC / LINCOLN GAS PLANT — high-priority violation on file | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-12-07 | BCE MACH III MIDSTREAM HOLDINGS LLC / LINCOLN GAS PLANT — high-priority violation on file | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-12-07 | BCE MACH III MIDSTREAM HOLDINGS LLC / LINCOLN GAS PLANT — high-priority violation on file | KINGFISHER, Kingfisher, OK | Pass | State |
| 2021-12-07 | STIMSON LUMBER COMPANY — high-priority violation on file | GASTON, Washington, OR | Pass | State |
| 2021-12-07 | AMER REF GROUP/BRADFORD | BRADFORD, McKean, PA | Pass | State |
| 2021-12-07 | TENNESSEE GAS PIPELINE CO LLC/MERCER STA 219 | MERCER, Mercer, PA | Pass | State |
| 2021-12-07 | KEYSTONE CONEMAUGH PROJ LLC/CONEMAUGH STATION | NEW FLORENCE, Indiana, PA | Pass | State |
| 2021-12-07 | EQUITRANS LP/JEFFERSON COMP STA | LIPPINCOTT, Greene, PA | Fail | State |
| 2021-12-07 | HILCORP ENERGY CO/MAHONING SIEGEL FACILITY — high-priority violation on file | EDINBURG, Lawrence, PA | Pass | State |
| 2021-12-07 | COTERRA ENERGY INC/ADAMS J PAD 1 | KINGSLEY, Susquehanna, PA | Pass | State |
| 2021-12-07 | COTERRA ENERGY INC/HAYNES W PAD 1 | NEW MILFORD, Susquehanna, PA | Pass | State |
| 2021-12-07 | COTERRA ENERGY INC/HAYNES W PAD 1 | NEW MILFORD, Susquehanna, PA | Fail | State |
| 2021-12-07 | TEMPLE UNIV HEALTH SCIENCES CAMPUS/STEAM — high-priority violation on file | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2021-12-07 | COATING & CONVERTING TECH CORP/ADHESIVE | PHILADELPHIA, Philadelphia, PA | Pass | Local |
| 2021-12-07 | NICCA USA INC | FOUNTAIN INN, Laurens, SC | Pass | State |
| 2021-12-07 | ABERDEEN ENERGY, LLC — high-priority violation on file | MINA, Edmunds, SD | Pass | State |
| 2021-12-07 | LCRA SAM SEYMOUR FAYETTE POWER PROJECT | LA GRANGE, Fayette, TX | Pass | State |
| 2021-12-07 | LCRA SAM SEYMOUR FAYETTE POWER PROJECT | LA GRANGE, Fayette, TX | Pass | State |
| 2021-12-07 | LCRA SAM SEYMOUR FAYETTE POWER PROJECT | LA GRANGE, Fayette, TX | Pass | State |
| 2021-12-07 | HARDIN COUNTY PEAKING FACILITY | KOUNTZE, Hardin, TX | Pass | State |
| 2021-12-07 | HARDIN COUNTY PEAKING FACILITY | KOUNTZE, Hardin, TX | Pass | State |
| 2021-12-07 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-12-07 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-12-07 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-12-07 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-12-07 | PORT ARTHUR REFINERY — high-priority violation on file | PORT ARTHUR, Jefferson, TX | Pass | State |
| 2021-12-07 | DOMINION ENERGY - CHESTERFIELD POWER STATION | CHESTER, Chesterfield, VA | Pass | State |
| 2021-12-07 | DOMINION ENERGY - CHESTERFIELD POWER STATION | CHESTER, Chesterfield, VA | Pass | State |
| 2021-12-07 | ND PAPER INC - BIRON DIVISION | WISCONSIN RAPIDS, Menominee, WI | Pass | State |
| 2021-12-07 | ERGON - WEST VIRGINIA, INC., NEWELL | NEWELL, Hancock, WV | Pass | State |
| 2021-12-07 | COLUMBIA GAS TRANSMISSION, LLC, LOST RIVER | MATHIAS, Hardy, WV | Pass | State |
| 2021-12-07 | BUCKING HORSE PLANT (JACKALOPE GAS GATHERING) | CONVERSE COUNTY, Converse, WY | Pass | State |
| 2021-12-06 | DESOTO GATHERING COMPANY, LLC - SOUTH RAINBOW | CENTER RIDGE, Conway, AR | Pass | State |
| 2021-12-06 | DESOTO GATHERING COMPANY, LLC - SOUTHEAST RAINBOW CPF-2 | BEE BRANCH, Conway, AR | Pass | State |
| 2021-12-06 | ET ENERGY & PROCESSING LLC. - BONANZA COMPRESSOR STATION | BONANZA, Sebastian, AR | Pass | State |
| 2021-12-06 | ET ENERGY & PROCESSING LLC. - BONANZA COMPRESSOR STATION | BONANZA, Sebastian, AR | Pass | State |
| 2021-12-06 | SACRAMENTO MUNICIPAL UTILITY DIST. FINANCING AUTHORITY DBA CAMPBELL POWER PLANT | SACRAMENTO, Sacramento, CA | Pass | Local |
| 2021-12-06 | CHEVRON PRODUCTS CO — high-priority violation on file | EL SEGUNDO, Los Angeles, CA | Pass | Local |
| 2021-12-06 | OWENS-BROCKWAY GLASS CONTAINER — high-priority violation on file | VERNON, Los Angeles, CA | Pass | Local |
| 2021-12-06 | ROCKY MTN NAT GAS - CRYSTAL RIVER CS | CARBONDALE 2.5 MI. W OF, Garfield, CO | Pass | State |
| 2021-12-06 | ROCKY MTN NAT GAS - CRYSTAL RIVER CS | CARBONDALE 2.5 MI. W OF, Garfield, CO | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.