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Technology Transfer Network / NAAQS
Ozone Implementation

Section 185A Ozone Nonattainment Areas Which Were Revoked Without Maintenance Plans

Information provided for informational purposes onlyNote: EPA no longer updates this information, but it may be useful as a reference or resource.
As of July 20, 2000
SECTION 185A                                                                                                     
    Chico, CA                                                                                                                                      
    Denver-Boulder, CO                                                                                                                             
    Flint, MI                                                                                                                                      
    Yuba City, CA                                                                                                                                  

    Classified and Incomplete Data areas not included.  Prior Designation       
    retained by operation of Law, but without measured violations.  Section     
    185A areas had 3 complete years of data at time of classification (1991)    
    showing no violation.  "Section 185A" was previously called "Transitional". 
    This is NOT an official list.                                             

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