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Adjustments to Original 1991 1-Hour Ozone Nonattainment Areas

As of June 15, 2005
BOUNDARY CHANGE                                           

  November 30, 1992  Effective December 30, 1992                                  
  Federal Register (57 FR 56762)                         
    New York-N. New Jersey-Long Island, NY-NJ-CT - NEW YORK               
         Orange and Putnam Counties: The November 6, 1991 notice indicated that
         the State requested time to study the boundaries and classification   
         for these two counties and that EPA would evaluate the State study.   
         Both counties are in the New York City CMSA.  The following action was
         taken in the November 30, 1992 notice:                                
         o  Putnam County was placed in the Poughkeepsie Nonattainment Area    
         (Marginal).                                                           
         o  The portions of Orange County that remain with the New York        
         nonattainment area (classified Severe-17) are: Blooming Grove,        
         Chester, Highlands, Monroe, Tuxedo, Warwick, and Woodbury.            
         o  The remaining portions of Orange County (16 towns and cities) are  
         designated as attainment.  See April 21, 1994 notice.                 

  November 30, 1992  Effective December 30, 1992                                  
  Federal Register (57 FR 56762)                         
    Salem, OR - OREGON                                                    
         Boundary Change from City of Salem to Salem Area Transportation Study 

  November 30, 1992  Effective December 30, 1992                                  
  Federal Register (<57 FR 56762)                         
    Seattle-Tacoma, WA - WASHINGTON                                       
         Boundary Change (small reduction)                                     

  April 21, 1994  Effective April 21, 1994                                        
  Federal Register (<59 FR 18967)                         
    Poughkeepsie, NY - NEW YORK                                           
         (Marginal) See October 6, 1994 Notice Below                           
         Orange County: Remainder of county (16 towns and cities) joined to    
         Poughkeepsie.                                                         

  November 08, 2001  Effective December 10, 2001                                  
  Federal Register (<66 FR 56476)                         
    East Kern Co, CA - CALIFORNIA                                         
         Kern Co                                                               

  November 08, 2001  Effective December 10, 2001                                  
  Federal Register (<66 FR 56476)                         
    San Joaquin Valley, CA - CALIFORNIA                                   
         Fresno Co, Kern Co, Kings Co, Madera Co, Merced Co, San Joaquin Co,   
         Stanislaus Co, Tulare Co                                              

  October 07, 2003  Effective November 06, 2003                                   
  Federal Register (<68 FR 57820)                         
    Los Angeles South Coast Air Basin, CA - CALIFORNIA                    

  October 07, 2003  Effective November 06, 2003                                   
  Federal Register (<68 FR 57820)                         
    Southeast Desert Modified AQMA, CA - CALIFORNIA                       
 
  September 23, 2013  Effective October 23, 2013
  Federal Register (<78 FR 58189)                             
    Morongo Band of Mission Indians - CALIFORNIA
		Corrected a boundary for the land of the Morongo Band of Mission Indians, 
		identifying it as a separately designated area for the 
		one-hour Ozone standard, independent of the Los Angeles-South Coast Air Basin Area, 
		with a Severe-17 classification.
 
CHANGE TO A LOWER CLASSIFICATION                          

  November 30, 1992  Effective December 30, 1992                                  
  Federal Register (<57 FR 56762)                         
    Muskegon, MI - MICHIGAN                                               
         Muskegon Co.                                                          
         Reclassified from Serious to Moderate                                 

  November 30, 1992  Effective December 30, 1992                                  
  Federal Register (<57 FR 56762)                         
    Sheboygan, WI - WISCONSIN                                             
         Sheboygan Co.                                                         
         Reclassified from Serious to Moderate                                 

  January 19, 1995  Effective February 21, 1995                                   
  Federal Register (<60 FR 3771)                           
    San Diego, CA - CALIFORNIA                                            
         Reclassified from Severe to Serious                                   

  April 02, 1996  Effective June 03, 1996                                         

  Federal Register (<61 FR 14496)                         
    Beaumont-Port Arthur, TX - TEXAS                                      
         Reclassified from Serious to Moderate                                 
         Includes Hardin Co, Jefferson Co, Orange Co                           

  January 06, 1997  Effective December 20, 1996                                   
  Federal Register (<62 FR 648)                             
    Pointe Coupee Parish, LA - LOUISIANA                                  
         Corrected from a Serious to a Marginal area, and redesignated to      
         attainment.                                                           
         Pointe Coupee Parish                                                  

CHANGE TO A HIGHER CLASSIFICATION (BUMP-UPS)              

  April 25, 1995  Effective June 01, 1995                                         
  Federal Register (<60 FR 20237)                         
    Sacramento Metro, CA - CALIFORNIA                                     
         Reclassify from Serious to Severe 2005                                

  November 06, 1997  Effective December 08, 1997                                  
  Federal Register (<62 FR 60001)                         
    Phoenix, AZ - ARIZONA                                                 
         Reclassify from Moderate to Serious                                   

  December 10, 1997  Effective January 09, 1998                                   
  Federal Register (<62 FR 65025)                         
    Santa Barbara-Santa Maria-Lompoc, CA - CALIFORNIA                     
         Reclassify from Moderate to Serious                                   

  February 18, 1998  Effective March 20, 1998                                     
  Federal Register (<63 FR 8128)                           
    Dallas-Fort Worth, TX - TEXAS                                         
         Reclassify from Moderate to Serious                                   
 
DESIGNATION TO NONATTAINMENT                              

  June 12, 1995  Effective July 12, 1995                                          
  Federal Register (<60 FR 30789)                         
    Sunland Park, NM (New Area 1995) - NEW MEXICO                         
         Dona Ana County (part)                                                
         Classified as Marginal                                                

  July 10, 1998  Effective August 10, 1998                                        
  Federal Register (<63 FR 37258)                         
    San Francisco Bay Area, CA - CALIFORNIA                               
         Alameda Co, Contra Costa Co, Marin Co, Napa Co, San Francisco Co, San 
         Mateo Co, Santa Clara Co, Solano Co, Sonoma Co                        
 

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