SLOAPCD RULE 104 ACTION IN AREAS OF HIGH CONCENTRATIONS
LAST REVISED 07/05/77



          RULE 104.  ACTION  IN  AREAS  OF  HIGH  CONCENTRATIONS   (Revised
          7/5/77)

          If the Control Officer discovers  ambient  air  concentrations in
          excess  of  half  the limits of any ambient Air Quality  Standard
          adopted by the State Air Resources Board or Federal Environmental
          Protection Agency,  and  if  the  Control  Officer  is  unable to
          establish that non-compliance with these Rules and Regulations is
          responsible for such concentrations, then the Control Officer may
          take  any  or  all  of  the following actions within a reasonable
          distance from the site(s) of such concentrations:

            A.  Refuse to issue an  Authority  to  Construct or a Permit to
                Operate  to  any  new  source  or  to any  source  that  is
                expanding that could increase such concentrations.

            B.  Take appropriate action to stop construction  or  expansion
                of any source that could increase such concentration.