MOJAQMD RULE 911 STD. FOR SECONDARY LEAD SMELTERS          
LAST REVISED 12/03/76

          
          (Adopted: December 3, 1976)

                                       Rule 911
                             Standard of Performance for
                               Secondary Lead Smelters


          (a)  Definitions

               (1)  LEAD  means  elemental  lead  or  alloys  in  which the
                    predominant component is lead.

               (2)  REVERBERATORY  FURNACE includes the following types  of
                    reverberatory furnaces:  stationary, rotating, rocking,
                    or tilting.

               (3)  SECONDARY  LEAD SMELTER means  any  facility  producing
                    lead from a  lead-bearing scrap material by smelting to
                    the metallic form.

          (b)  Emission Standard

               This rule applies to  the  following facilities in secondary
               lead   smelters,   the   construction,    modification    or
               reconstruction  of  which commenced after June 11, 1973: pot
               furnaces of more than  250  kilograms  (550 pounds) charging
               capacity,   blast   (cupola)   furnaces,  and  reverberatory
               furnaces.

               On and after the date on which the performance test required
               to be conducted by Rule 902 (b)(1) is completed, no owner or
               operator of a facility subject to  the  provisions  of  this
               rule shall cause to be discharged into the atmosphere:

               (1)  From  a  blast  (cupola)  or  reverberatory furnace any
                    gases which:

                    (A)  Contain  particulate  matter   in   excess  of  50
                         milligrams  per  dry  standard cubic meter  (0.022
                         grains per dry standard cubic foot).

                    (B)  Exhibit 20 percent opacity or greater.

               (2)  From pot furnaces any gases  which  exhibit ten percent
                    opacity or greater.

          (c)  Testing Procedure

               Emissions shall be tested according to the methods specified
               by the Air Pollution Control Officer.