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Adjustments to Original PM-2.5 (2006) Nonattainment Area Baseline
Adjustments to Original PM-2.5 (2006) Nonattainment Area Baseline
Data is current as of March 31, 2024| CHANGE FROM SUBPART 1 TO SUBPART 4 |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Allentown, PA - PENNSYLVANIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Chico, CA - CALIFORNIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Fairbanks, AK - ALASKA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Harrisburg-Lebanon-Carlisle-York, PA - PENNSYLVANIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Imperial County, CA - CALIFORNIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Johnstown, PA - PENNSYLVANIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Klamath Falls, OR - OREGON |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Knoxville-Sevierville-La Follette, TN - TENNESSEE |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Lancaster, PA - PENNSYLVANIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Liberty-Clairton, PA - PENNSYLVANIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Logan, UT-ID - IDAHO |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Logan, UT-ID - UTAH |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Los Angeles-South Coast Air Basin, CA - CALIFORNIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Nogales, AZ - ARIZONA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Oakridge, OR - OREGON |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Philadelphia-Wilmington, PA-NJ-DE - DELAWARE |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Philadelphia-Wilmington, PA-NJ-DE - PENNSYLVANIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Pittsburgh-Beaver Valley, PA - PENNSYLVANIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Provo, UT - UTAH |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Sacramento, CA - CALIFORNIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Salt Lake City, UT - UTAH |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| San Francisco Bay Area, CA - CALIFORNIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| San Joaquin Valley, CA - CALIFORNIA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Tacoma, WA - WASHINGTON |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| West Central Pinal, AZ - ARIZONA |
| Change from Subpart 1 to Moderate |
| June 02, 2014, Effective July 02, 2014 ( 79 FR 31566 ) |
| Yuba City-Marysville, CA - CALIFORNIA |
| Change from Subpart 1 to Moderate |
| CHANGE TO A HIGHER CLASSIFICATION (BUMP-UPS) |
| January 13, 2016, Effective February 12, 2016 ( 81 FR 1514 ) |
| Los Angeles-South Coast Air Basin, CA - CALIFORNIA |
| Reclassify from Moderate to Serious |
| January 20, 2016, Effective February 19, 2016 ( 81 FR 2993 ) |
| San Joaquin Valley, CA - CALIFORNIA |
| Reclassify from Moderate to Serious |
| May 10, 2017, Effective June 09, 2017 ( 82 FR 21711 ) |
| Fairbanks, AK - ALASKA |
| Reclassify from Moderate to Serious |
| May 10, 2017, Effective June 09, 2017 ( 82 FR 21711 ) |
| Provo, UT - UTAH |
| Reclassify from Moderate to Serious |
| May 10, 2017, Effective June 09, 2017 ( 82 FR 21711 ) |
| Salt Lake City, UT - UTAH |
| Reclassify from Moderate to Serious |
| DESIGNATION TO NONATTAINMENT |
| February 03, 2011, Effective March 07, 2011 ( 76 FR 6056 ) |
| West Central Pinal, AZ - ARIZONA |