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Adjustments to Original PM-2.5 (2006) Nonattainment Area Baseline

Data is current as of November 30, 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