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Adjustments to Original 8-Hour Ozone (2015) Nonattainment Area Baseline

Data is current as of September 30, 2021


BOUNDARY CHANGE
June 14, 2021, Effective July 14, 2021 ( 86 FR 31438 )
Chicago, IL-IN-WI - ILLINOIS
 
June 14, 2021, Effective July 14, 2021 ( 86 FR 31438 )
Chicago, IL-IN-WI - INDIANA
 
June 14, 2021, Effective July 14, 2021 ( 86 FR 31438 )
Chicago, IL-IN-WI - WISCONSIN
 
June 14, 2021, Effective July 14, 2021 ( 86 FR 31438 )
Manitowoc County, WI - WISCONSIN
 
June 14, 2021, Effective July 14, 2021 ( 86 FR 31438 )
Milwaukee, WI - WISCONSIN
 
June 14, 2021, Effective July 14, 2021 ( 86 FR 31438 )
Sheboygan County, WI - WISCONSIN
 
June 14, 2021, Effective July 14, 2021 ( 86 FR 31438 )
St. Louis, MO-IL - ILLINOIS
 
June 14, 2021, Effective July 14, 2021 ( 86 FR 31438 )
St. Louis, MO-IL - MISSOURI
 
CHANGE TO A HIGHER CLASSIFICATION (BUMP-UPS)
June 02, 2021, Effective July 02, 2021 ( 86 FR 29522 )
San Diego County, CA - CALIFORNIA
Reclassify from Moderate to Severe 15
 
DESIGNATION TO NONATTAINMENT
July 25, 2018, Effective September 24, 2018 ( 83 FR 35136 )
San Antonio, TX - TEXAS
 
June 14, 2021, Effective July 14, 2021 ( 86 FR 31438 )
Door County-Revised, WI - WISCONSIN