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 |
|---|---|---|---|---|
| 2021-11-18 | TORAY PLASTICS (AMERICA), INC. | NORTH KINGSTOWN, Washington, RI | Pass | State |
| 2021-11-18 | KIMBERLY-CLARK PALMETTO — high-priority violation on file | BEECH ISLAND, Aiken, SC | Pass | State |
| 2021-11-18 | SWISS KRONO SC LLC | BARNWELL, Barnwell, SC | Pass | State |
| 2021-11-18 | CENTURY ALUMINUM OF SOUTH CAROLINA INC — high-priority violation on file | GOOSE CREEK, Berkeley, SC | Fail | State |
| 2021-11-18 | CENTURY ALUMINUM OF SOUTH CAROLINA INC — high-priority violation on file | GOOSE CREEK, Berkeley, SC | Pass | State |
| 2021-11-18 | GLACIAL LAKES ENERGY LLC | WATERTOWN, Codington, SD | Pass | State |
| 2021-11-18 | GENPAK | CEDAR CITY, Iron, UT | Pass | State |
| 2021-11-18 | KINDER MORGAN SOUTHEAST TERMINALS LLC - RICHMOND 1 | RICHMOND, Richmond (city), VA | Pass | State |
| 2021-11-18 | HAMPTON LUMBER MILLS - MORTON | MORTON, Lewis, WA | Pass | Local |
| 2021-11-18 | 3M CO WAUSAU PLT — high-priority violation on file | WAUSAU, Marathon, WI | Pass | State |
| 2021-11-18 | QUAD/GRAPHICS, INC | WEST ALLIS, Waukesha, WI | Pass | State |
| 2021-11-18 | WESTLAKE NATRIUM LLC, WESTLAKE NATRIUM | PROCTOR, Marshall, WV | Pass | State |
| 2021-11-17 | HILCORP ALASKA, LLC / SEAWATER INJECTION PLANT EAST (SIPE) | NORTH SLOPE BOROUGH, North Slope, AK | Fail | State |
| 2021-11-17 | CEMEX SOUTHEAST LLC | DEMOPOLIS, Marengo, AL | Pass | State |
| 2021-11-17 | 3M COMPANY — high-priority violation on file | GUIN, Marion, AL | Pass | State |
| 2021-11-17 | WILLIAMS MOBILE BAY PRODUCER SERVICES, LLC | CODEN, Mobile, AL | Pass | State |
| 2021-11-17 | DCP MIDSTREAM | CODEN, Mobile, AL | Pass | State |
| 2021-11-17 | DCP MIDSTREAM | CODEN, Mobile, AL | Pass | State |
| 2021-11-17 | JOHNS MANVILLE INC. | PHENIX CITY, Russell, AL | Pass | State |
| 2021-11-17 | HUNT REFINING COMPANY | TUSCALOOSA, Tuscaloosa, AL | Pass | State |
| 2021-11-17 | ANHEUSER-BUSCH LLC., (LA BREWERY) | VAN NUYS, Los Angeles, CA | Pass | Local |
| 2021-11-17 | B BRAUN MEDICAL | IRVINE, Orange, CA | Pass | Local |
| 2021-11-17 | CALIFORNIA STEEL INDUSTRIES INC — high-priority violation on file | FONTANA, San Bernardino, CA | Pass | Local |
| 2021-11-17 | PHILLIPS 66 PIPELINE - LA JUNTA TERMINAL | LA JUNTA AREA, Otero, CO | Pass | State |
| 2021-11-17 | ALGONQUIN GAS TRANSMISSION LLC - OXFORD COMPRESSOR STATION | OXFORD, New Haven, CT | Pass | State |
| 2021-11-17 | SYNAGRO RESIDUALS MANAGEMENT CO | WATERBURY, New Haven, CT | Pass | State |
| 2021-11-17 | CHEVRON PRODUCTS COMPANY | FORT LAUDERDALE, Broward, FL | Pass | State |
| 2021-11-17 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-17 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-17 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-17 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-17 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-17 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-17 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-17 | CLARIOS, LLC | TAMPA, Hillsborough, FL | Pass | State |
| 2021-11-17 | MOSAIC FERTILIZER LLC — high-priority violation on file | MULBERRY, Polk, FL | Pass | State |
| 2021-11-17 | MOSAIC FERTILIZER LLC — high-priority violation on file | MULBERRY, Polk, FL | Pass | State |
| 2021-11-17 | MOSAIC FERTILIZER LLC — high-priority violation on file | MULBERRY, Polk, FL | Pass | State |
| 2021-11-17 | DUKE ENERGY FLORIDA, LLC | DE BARY-ORANGE CITY DIVISION, Volusia, FL | Pass | State |
| 2021-11-17 | DUKE ENERGY FLORIDA, LLC | DE BARY-ORANGE CITY DIVISION, Volusia, FL | Pass | State |
| 2021-11-17 | DUKE ENERGY FLORIDA, LLC | DE BARY-ORANGE CITY DIVISION, Volusia, FL | Pass | State |
| 2021-11-17 | JOHNSON MATTHEY PROCESS TECHNOLOGIES, INC | SAVANNAH, Chatham, GA | Pass | State |
| 2021-11-17 | JOHNSON MATTHEY PROCESS TECHNOLOGIES, INC | SAVANNAH, Chatham, GA | Pass | State |
| 2021-11-17 | JOHNSON MATTHEY PROCESS TECHNOLOGIES, INC | SAVANNAH, Chatham, GA | Pass | State |
| 2021-11-17 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-17 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-17 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-17 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-17 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-17 | SK BATTERY AMERICA, INC. | COMMERCE, Jackson, GA | Pass | State |
| 2021-11-17 | LOUIS DREYFUS COMPANY GRAND JUNCTION, LLC | GRAND JUNCTION, Greene, IA | Pass | State |
| 2021-11-17 | RIVERSIDE HOSPITAL | KANKAKEE, Kankakee, IL | Pass | State |
| 2021-11-17 | WRB REFINING LP WOOD RIVER REFINERY — high-priority violation on file | ROXANA, Madison, IL | Pass | State |
| 2021-11-17 | O & K AMERICAN CORPORATION | SEYMOUR, Jackson, IN | Pass | State |
| 2021-11-17 | ECO SERVICES OPERATIONS CORP | HAMMOND, Lake, IN | Pass | State |
| 2021-11-17 | ECO SERVICES OPERATIONS CORP | HAMMOND, Lake, IN | Pass | State |
| 2021-11-17 | ECO SERVICES OPERATIONS CORP | HAMMOND, Lake, IN | Pass | State |
| 2021-11-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-11-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-11-17 | HEIDELBERG MATERIALS US CEMENT LLC — high-priority violation on file | MITCHELL, Lawrence, IN | Pass | State |
| 2021-11-17 | ALCOA POWER GENERATING INC WARRICK POWER PLANT — high-priority violation on file | NEWBURGH, Warrick, IN | Pass | State |
| 2021-11-17 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2021-11-17 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2021-11-17 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2021-11-17 | TENNESSEE VALLEY AUTHORITY (TVA) - SHAWNEE FOSSIL PLANT | WEST PADUCAH, McCracken, KY | Pass | State |
| 2021-11-17 | KOCH METHANOL ST JAMES LLC - KOCH METHANOL FACILITY | ST. JAMES, St. James, LA | Pass | State |
| 2021-11-17 | SOLUTIA INCORPORATED — high-priority violation on file | SPRINGFIELD, CITY OF, Hampden, MA | Pass | State |
| 2021-11-17 | ND PAPER INC. | RUMFORD, Oxford, ME | Pass | State |
| 2021-11-17 | CLEVELAND-CLIFFS STEEL CORPORATION DEARBORN WORKS | DEARBORN, Wayne, MI | Pass | State |
| 2021-11-17 | DTE GAS COMPANY - MILFORD COMPRESSOR STATION | MILFORD, Oakland, MI | Pass | State |
| 2021-11-17 | WESTERN MICHIGAN UNIVERSITY | KALAMAZOO, Kalamazoo, MI | Pass | State |
| 2021-11-17 | ATLAS EPS, A DIVISION OF ATLAS ROOFING CORP. | BYRON CENTER, Kent, MI | Pending | State |
| 2021-11-17 | AUNT MILLIE'S BAKERIES, PLYMOUTH | PLYMOUTH, Wayne, MI | Pass | State |
| 2021-11-17 | UNIVERSITY OF MISSISSIPPI, THE | UNIVERSITY, Lafayette, MS | Pass | State |
| 2021-11-17 | STERICYCLE, INC. | HAW RIVER, Alamance, NC | Pass | State |
| 2021-11-17 | CORNING INCORPORATED - MIDLAND | MIDLAND, Cabarrus, NC | Pass | State |
| 2021-11-17 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-11-17 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-11-17 | TARGA BADLANDS, LLC - LITTLE MISSOURI GAS PLANT (LMGP) AND SMOKEY COMPRESSOR STA | WATFORD CITY, McKenzie, ND | Pass | State |
| 2021-11-17 | AMERICAN CRYSTAL SUGAR COMPANY (ACS) - DRAYTON PLANT - AQ | DRAYTON, Pembina, ND | Pass | State |
| 2021-11-17 | SHELL OIL PRODUCTS US NEWARK | NEWARK, Essex, NJ | Pass | State |
| 2021-11-17 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-17 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-17 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-17 | WHITEHORN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-17 | SPARTAN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-17 | SPARTAN COMPRESSOR STATION | MALAGA, Eddy, NM | Pass | State |
| 2021-11-17 | SEVERUS COMPRESSOR STATION | MONUMENT, Lea, NM | Pass | State |
| 2021-11-17 | SEVERUS COMPRESSOR STATION | MONUMENT, Lea, NM | Pass | State |
| 2021-11-17 | GOLDSTRIKE MINE | CARLIN, Eureka, NV | Pass | State |
| 2021-11-17 | NORTH VALMY GENERATING STATION | VALMY, Humboldt, NV | Pass | State |
| 2021-11-17 | DENTON RAWHIDE MINE | HAWTHORNE, Mineral, NV | Pass | State |
| 2021-11-17 | DARBY POWER, LLC | OHIO, Undetermined, OH | Pass | State |
| 2021-11-17 | DARBY POWER, LLC | OHIO, Undetermined, OH | Pass | State |
| 2021-11-17 | PPG INDUSTRIES - ERU | CIRCLEVILLE, Pickaway, OH | Pass | State |
| 2021-11-17 | ELYRIA FOUNDRY | ELYRIA, Lorain, OH | Pass | State |
| 2021-11-17 | ELYRIA FOUNDRY | ELYRIA, Lorain, OH | Pass | State |
| 2021-11-17 | ELYRIA FOUNDRY | ELYRIA, Lorain, OH | Pass | State |
| 2021-11-17 | ELYRIA FOUNDRY | ELYRIA, Lorain, OH | Pass | State |
| 2021-11-17 | ELYRIA FOUNDRY | ELYRIA, Lorain, OH | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.