SACAQMD RULE 203 PREVENTION OF SIGNIFICANT DETERIORATION            
LAST REVISED 02/26/91            

            SACRAMENTO METROPOLITAN AQMD      RULES AND REGULATIONS

             RULE 203 PREVENTION OF SIGNIFICANT DETERIORATION
                              Adopted 2-26-91


            The  provisions  of  Part  52.21,  Chapter 1, Title 40, of the 
            Code of Federal Regulations (CFR) in effect February  26,  1991 
            are made part of the Rules and Regulations of the Sacramento 
            Metropolitan Air  Quality  Management  District.  Whenever  any  
            source is subject to more than one rule, regulation, provision,
            or requirement relating  to  the  control  of any air contaminant, 
            in cases of conflict or duplication, the most stringent  rule,  
            regulation,  provision, or requirement shall apply.

            For the purposes of this Rule, the word "Administrator" as used 
            in Part 52.21, Chapter  1, Title 40 of the CFR shall mean the Air 
            Pollution Control  Officer, except that  the Air Pollution 
            Control Officer shall not be empowered to grant a waiver or 
            variance  from  the  requirements of this Part without the 
            written concurrence of U.S. EPA.