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 |
|---|---|---|---|---|
| 2021-12-21 | TIN TECH & REF LLC/WEST CHESTER | WEST CHESTER, Chester, PA | Pass | State |
| 2021-12-21 | UNIVERSITY OF RHODE ISLAND | KINGSTON, Washington, RI | Pass | State |
| 2021-12-21 | 3M COMPANY | CLINTON, Anderson, TN | Pass | State |
| 2021-12-21 | CHEVRON USA | UTAH, Undetermined, UT | Pass | State |
| 2021-12-21 | VAUGHAN-BASSETT FURNITURE COMPANY | GALAX, Galax (city), VA | Pass | State |
| 2021-12-20 | TURTLES/BUTTERFLIES PAD | MCKENZIE COUNTY, McKenzie, ND | Pass | U.S. EPA |
| 2021-12-20 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Fail | State |
| 2021-12-20 | NUCOR STEEL BIRMINGHAM,INC. | BIRMINGHAM, Jefferson, AL | Pass | Local |
| 2021-12-20 | RAZORBACK GATHERING COMPANY, LLC. - JUDSONIA CPF 1 | JUDSONIA, White, AR | Pass | State |
| 2021-12-20 | RAZORBACK GATHERING COMPANY, LLC. - JUDSONIA CPF 1 | JUDSONIA, White, AR | Pass | State |
| 2021-12-20 | HANDYTUBE LLC | CAMDEN, Kent, DE | N/A | State |
| 2021-12-20 | HANDYTUBE LLC | CAMDEN, Kent, DE | N/A | State |
| 2021-12-20 | MIAMI-DADE WATER AND SEWER DEPARTMENT | HIALEAH, Miami-Dade, FL | Pass | State |
| 2021-12-20 | MIAMI-DADE WATER AND SEWER DEPARTMENT | HIALEAH, Miami-Dade, FL | Pass | State |
| 2021-12-20 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2021-12-20 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2021-12-20 | METRO METHANE RECOVERY | MITCHELLVILLE, Polk, IA | Pass | Local |
| 2021-12-20 | HONDA DEVELOPMENT & MANUFACTURING OF AMERICA LLC INDIANA AUT — high-priority violation on file | GREENSBURG, Decatur, IN | Pass | State |
| 2021-12-20 | HONDA DEVELOPMENT & MANUFACTURING OF AMERICA LLC INDIANA AUT — high-priority violation on file | GREENSBURG, Decatur, IN | Pass | State |
| 2021-12-20 | CANAL 3 GENERATING LLC | SANDWICH, Barnstable, MA | Pass | State |
| 2021-12-20 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2021-12-20 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2021-12-20 | XCEL ENERGY - PRAIRIE ISLAND NUCLEAR PLANT | WELCH, Goodhue, MN | Pass | State |
| 2021-12-20 | NORTHERN NATURAL GAS CO - FARIBAULT | FARIBAULT, Rice, MN | Pass | State |
| 2021-12-20 | POET BIOREFINING-FAIRMONT LLC — high-priority violation on file | FAIRMONT, Fillmore, NE | Pass | State |
| 2021-12-20 | BOROS EAST FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2021-12-20 | BOROS EAST FACILITY | MALAGA, Eddy, NM | Pass | State |
| 2021-12-20 | EOG RESOURCES, INC. - DEERSVILLE HN FRA PAD | DEERSVILLE, Harrison, OH | Pass | State |
| 2021-12-20 | EOG RESOURCES, INC. - DEERSVILLE HN FRA PAD | DEERSVILLE, Harrison, OH | Pass | State |
| 2021-12-20 | VALIDUS ENERGY II MIDCON LLC / BARBARO PAD | MUSTANG, Canadian, OK | Pass | State |
| 2021-12-20 | DIVERSIFIED PRODUCTION LLC / HOWARD 5 19 17 1H PAD | SEILING, Dewey, OK | Pass | State |
| 2021-12-20 | ENERFIN GATHERING EAST LLC / SOUTH OKEMAH COMPRESSOR STATION | OKEMAH, Okfuskee, OK | Pass | State |
| 2021-12-20 | MARKWEST OKLAHOMA GAS CO LLC / MYER MOUNTAIN COMPRESSOR STATION — high-priority violation on file | SCIPIO, Pittsburg, OK | Pass | State |
| 2021-12-20 | DIVERSIFIED PRODUCTION LLC / WHITNEY 9 11 17 2H STATION | CLINTON, Washita, OK | Pass | State |
| 2021-12-20 | CNTY LDFL INC/CNTY ENVIRONMENTAL OF CLARION | LEEPER, Clarion, PA | Pass | State |
| 2021-12-20 | BRASKEM AMER INC/MARCUS HOOK | MARCUS HOOK, Delaware, PA | Fail | State |
| 2021-12-20 | MARKWEST LIBERTY MIDSTREAM/BAKER COMP STA | WASHINGTON, Washington, PA | Pass | State |
| 2021-12-20 | REGENCY MARCELLUS GAS GATHERING LLC/OGONTZ WEST COMP STA | CUMMINS TWP, Lycoming, PA | Pass | State |
| 2021-12-20 | SMART SAND INC — high-priority violation on file | OAKDALE, Oconto, WI | Pass | State |
| 2021-12-19 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-12-19 | BRUNSWICK CELLULOSE LLC | BRUNSWICK, Glynn, GA | Pass | State |
| 2021-12-18 | US AIR FORCE, PACAF REGIONAL SUPPORT C / EARECKSON AIR STATION, SHEMYA ISLAND | DUTCH HARBOR, Aleutians West (CA), AK | Pass | State |
| 2021-12-18 | US AIR FORCE, PACAF REGIONAL SUPPORT C / EARECKSON AIR STATION, SHEMYA ISLAND | DUTCH HARBOR, Aleutians West (CA), AK | N/A | State |
| 2021-12-18 | US AIR FORCE, PACAF REGIONAL SUPPORT C / EARECKSON AIR STATION, SHEMYA ISLAND | DUTCH HARBOR, Aleutians West (CA), AK | N/A | State |
| 2021-12-18 | US AIR FORCE, PACAF REGIONAL SUPPORT C / EARECKSON AIR STATION, SHEMYA ISLAND | DUTCH HARBOR, Aleutians West (CA), AK | N/A | State |
| 2021-12-18 | AES WARRIOR RUN | CUMBERLAND, Allegany, MD | Pass | State |
| 2021-12-18 | COLLINS TREE SERVICE PIT | NEWPORT, Carteret, NC | Pass | State |
| 2021-12-17 | LHOIST NORTH AMERICA OF ALABAMA, LLC | CALERA, Shelby, AL | Fail | State |
| 2021-12-17 | PAR - REFINERY — high-priority violation on file | KAPOLEI, Honolulu, HI | Pass | State |
| 2021-12-17 | SOUTHWEST IOWA RENEWABLE ENERGY — high-priority violation on file | COUNCIL BLUFFS, Pottawattamie, IA | Fail | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | BP PRODUCTS NORTH AMERICA INC WHITING BUSINESS UNIT — high-priority violation on file | WHITING, Lake, IN | Pass | State |
| 2021-12-17 | WAUPACA FOUNDRY INC PLANT 5 — high-priority violation on file | TELL CITY, Perry, IN | Pass | State |
| 2021-12-17 | WAUPACA FOUNDRY INC PLANT 5 — high-priority violation on file | TELL CITY, Perry, IN | Pass | State |
| 2021-12-17 | SABINE PASS LNG LP AND SABINE PASS LIQUEFACTION LLC - SABINE PASS LNG TERMINAL | CAMERON, Cameron, LA | Pass | State |
| 2021-12-17 | CHOCTAW GENERATION LIMITED PARTNERSHIP, RED HILLS GENERATION FACILITY | ACKERMAN, Choctaw, MS | Pass | State |
| 2021-12-17 | CHOCTAW GENERATION LIMITED PARTNERSHIP, RED HILLS GENERATION FACILITY | ACKERMAN, Choctaw, MS | Pass | State |
| 2021-12-17 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2021-12-17 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2021-12-17 | VENTURE OIL AND GAS INC, HIWANNEE OPERATIONS — high-priority violation on file | WAYNESBORO, Wayne, MS | Pass | State |
| 2021-12-17 | BLUE DIAMOND HILL GYPSUM — high-priority violation on file | BLUE DIAMOND, Clark, NV | Pass | Local |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | THE SCOTTS CO. | MARYSVILLE, Union, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
| 2021-12-17 | VALICOR ENVIRONMENTAL SERVICES, LLC — high-priority violation on file | DAYTON, Montgomery, OH | Pass | State |
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 2021. It lists 35,950 stack tests recorded nationwide in 2021.