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Designation and NAAQS Information Related to 8-Hour Ozone (2008)


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  1. Revised 8-Hour Ozone (2008 Standard) NAAQS Notices
     
    1. Final Implementation of the 2008 National Ambient Air Quality Standards for Ozone: Nonattainment Area Classifications Approach, Attainment Deadlines and Revocation of the 1997 Ozone Standards for Transportation Conformity Purposes (May 21, 2012)
      See 77 FR 30160

    2. Proposed Implementation of the 2008 National Ambient Air Quality Standards for Ozone: State Implementation Plan Requirements (June 6, 2013)
      See 78 FR 34178

    3. Implementation of the 2008 National Ambient Air Quality Standards for Ozone: State Implementation Plan Requirements; Notice of extension of comment period (July 24, 2013)
      See 78 FR 44485

    4. Final Implementation of the 2008 National Ambient Air Quality Standards for Ozone: State Implementation Plan Requirements; Revocation of the 1997 NAAQS (March 6, 2015)
      See 80 FR 12264

  2. Revised 8-Hour Ozone (2008 Standard) Designation Notices
     
    1. EPA's Revised Responses to Designation Recommendations From Illinois, Indiana, and Wisconsin for the 2008 Ozone Standards: Notice of Availability and Public Comment Period (February 14, 2012)
      See 77 FR 8211

    2. Air Quality Designations for the 2008 Ozone National Ambient Air Quality Standards (May 21, 2012)
      See 77 FR 30088

    3. Air Quality Designations for the 2008 Ozone National Ambient Air Quality Standards for Several Counties in Illinois, Indiana, and Wisconsin; Corrections to Inadvertant Errors in Prior Designations (June 11, 2012)
      See 77 FR 34221