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8-Hr Ozone (1997) Federal Register Notice
Attainment Date Extensions

As of October 01, 2015
Ordered by Classification
The 1997 Ozone NAAQS was revoked effective April 6, 2015 (80 FR 12264).

SERIOUS
  
Baltimore, MD
Extension from 6/15/2010 to 6/15/2011
Proposed Approval        07/23/2010      75 FR Page 43114     
Direct Final        07/23/2010      75 FR Page 43069     Effective:09/21/2010
Withdrawal        09/08/2010      75 FR Page 54497     
Final Approval        03/11/2011      76 FR Page 13289     Effective:04/11/2011
  
MODERATE
  
Atlanta, GA
Extension from 6/15/2010 to 6/15/2011
Proposed Approval        09/17/2010      75 FR Page 56943     
Final Approval        11/30/2010      75 FR Page 73969     Effective:12/30/2010
  
Charlotte-Gastonia-Rock Hill, NC-SC
Extension from 6/15/2010 to 6/15/2011
Proposed Approval        08/04/2010      75 FR Page 46881     
Final Approval        05/31/2011      76 FR Page 31245     Effective:06/30/2011
  
Mariposa and Tuolumne Cos (Southern Mtn), CA
Extension from 6/15/2010 to 6/15/2011
Proposed Approval        09/14/2012      77 FR Page 56797     
Direct Final        09/14/2012      77 FR Page 56775     Effective:11/13/2012
Withdrawal        11/07/2012      77 FR Page 66715     
Extension from 6/15/2010 to 6/15/2011
Final Approval        12/03/2012      77 FR Page 71551     Effective:01/02/2013
  
Nevada Co. (Western part), CA
Extension from 6/15/2010 to 6/15/2011
Proposed Approval        09/14/2012      77 FR Page 56797     
Direct Final        09/14/2012      77 FR Page 56775     Effective:11/13/2012
Withdrawal        11/07/2012      77 FR Page 66715     
Extension from 6/15/2010 to 6/15/2011
Final Approval        12/03/2012      77 FR Page 71551     Effective:01/02/2013
  
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE
Extension from 6/15/2010 to 6/15/2011 (NJ portion)
Proposed Approval        11/09/2010      75 FR Page 68733     
Extension from 6/15/2010 to 6/15/2011 (DE, MD, PA portions)
Proposed Approval        11/09/2010      75 FR Page 68736     
Extension from 6/15/2010 to 6/15/2011 (NJ portion)
Final Approval        01/21/2011      76 FR Page 3838     Effective:02/22/2011
Extension from 6/15/2010 to 6/15/2011 (DE, MD, PA portions)
Final Approval        01/21/2011      76 FR Page 3840     Effective:02/22/2011


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