SACAQMD RULE 420 SULFUR CONTENT OF FUELS          
LAST REVISED 08/13/81          

          SACRAMENTO METROPOLITAN AQMD                RULES AND REGULATIONS
                                 RULE 420 SULFUR CONTENT OF FUELS
                                          Adopted 8-3-77
                                        (Amended 8-13-81)

                                              INDEX

          100 GENERAL
              101  PURPOSE
              110  EXEMPTIONS

          200 DEFINITIONS (NOT INCLUDED)

          300 STANDARDS
              301  SULFUR CONTENT OF FUELS

          400 ADMINISTRATIVE REQUIREMENTS (NOT INCLUDED)

          500 MONITORING AND RECORDS (NOT INCLUDED)
          
          100 GENERAL

              101  PURPOSE:  To  limit  the emission of compounds of sulfur
                   from combustion of fuels.

              110  EXEMPTIONS:  The provisions of this rule shall not apply
                   to:
                   110.1   The burning of  sulfur,  hydrogen  sulfide, acid
                           sludge   or   other  sulfur  compounds  in   the
                           manufacturing  of   sulfur   or   other   sulfur
                           compounds;
                   110.2   The  incinerating  of  waste gases provided that
                           the gross heating value  of  such  gases is less
                           than  2.14  kilogram-  calories per cubic  meter
                           (300 British Thermal Units  per  cubic  foot) at
                           standard   conditions   and  the  fuel  used  to
                           incinerate  such waste gases  does  not  contain
                           sulfur or sulfur  compounds  in  excess  of  the
                           mount specified in this rule;
                   110.3   The  use  of  solid  fuels  in any metallurgical
                           process;
                   110.4   The use of fuels where the gaseous  products  of
                           combustion  are  used as raw materials for other
                           processes;
                   110.5   The use of liquid,  or  solid fuel, to propel or
                           test any vehicle, aircraft, missile, locomotive,
                           boat or ship;
                   110.6   The use of fuel with higher sulfur content where
                           process conditions or control  equipment  remove
                           sulfur  compounds  from  the  stack gases to the
                           extent  that  the  emission of sulfur  compounds
                           into the atmosphere  is  no  greater  than  that
                           which  could  be  emitted  by using a fuel which
                           complies with the provisions of this rule;
                   110.7   The use of liquid fuel whenever  the  supply  of
                           gaseous  fuel, the burning of which is permitted
                           by this rule, is not physically available to the
                           user due to  accident,  act  of God, act of war,
                           act of the public enemy, or other  conditions of
                           emergency.
                   110.8   The burning and incineration of sewage treatment
                           plant waste gases provided that the fuel used to
                           incinerate such gases does not contain sulfur or
                           sulfur   compounds  in  excess  of  the  amounts
                           specified in Section 301.

          200 DEFINITIONS (NOT INCLUDED)

          300 STANDARDS

              301  SULFUR CONTENT OF  FUELS:   A  person shall not burn any
                   gaseous fuel containing sulfur compounds  in  excess  of
                   1.14  grams  per  cubic  meter  (50 grains per 100 cubic
                   feet) of gaseous fuel, calculated as hydrogen sulfide at
                   standard conditions, or any liquid  fuel  or  solid fuel
                   having a sulfur content in excess of 0.5% by weight.

          400 ADMINISTRATIVE REQUIREMENTS (NOT INCLUDED)

          500 MONITORING AND RECORDS (NOT INCLUDED)