SACAQMD RULE 102 CIRCUMVENTION          
LAST REVISED 05/15/72          

          SACRAMENTO METROPOLITAN AQMD                RULES AND REGULATIONS
                                      RULE 102 CIRCUMVENTION
                                         Adopted 5-15-72

                                              INDEX

          100  GENERAL
               101 PURPOSE

          200  DEFINITIONS (NOT INCLUDED)

          300  STANDARDS
               301 REDUCTION OR CONCEALMENT OF EMISSIONS
               302 SEPARATION OF EMISSIONS
               303 COMBINED EMISSION, SEPARATED
               304 COMBINED EMISSIONS, UNSEPARATED

          400  ADMINISTRATIVE REQUIREMENTS (NOT INCLUDED)

          500  MONITORING AND RECORDS (NOT INCLUDED)
          
          100  GENERAL

               101 PURPOSE:  To make it unlawful for a person to circumvent
                   any applicable section of these rules and regulations.

          300  STANDARDS

               301 REDUCTION  OR  CONCEALMENT OF EMISSIONS:  A person shall
                   not build, erect,  install, or use any article, machine,
                   equipment,  or other  contrivance,  the  use  of  which,
                   without resulting in a reduction in the total release of
                   air  contaminants   into   the  atmosphere,  reduces  or
                   conceals an emission which would  otherwise constitute a
                   violation  of  Part  3, Division 26 of  the  Health  and
                   Safety Code of the State of California or of these Rules
                   and Regulations. This  rule  shall not apply to cases in
                   which the only violation involved is of Section 41700 of
                   the Health and Safety Code of the State of California.

               302 SEPARATION  OF EMISSIONS:  If air  contaminants  from  a
                   single source  operation are emitted through two or more
                   emission points,  the  total emitted quantity of any air
                   contaminant limited in this regulation cannot exceed the
                   quantity which would be the allowable emission through a
                   single emission point; the total emitted quantity of any
                   such air contaminant shall  be  taken  as the product of
                   the  highest  concentration  measured  in  any   of  the
                   emission points and the combined exhaust gas volume from
                   all  emission points, unless the person responsible  for
                   the source operation establishes, to the satisfaction of
                   the Air  Pollution  Control  Officer,  the correct total
                   emitted quantity.

               303 COMBINED EMISSIONS, SEPARATED:  If air contaminants from
                   two  or  more  source operations are combined  prior  to
                   emission  and there  are  adequate  and  reliable  means
                   reasonably  susceptible  to  confirmation and use by the
                   Air  Pollution  Control  Officer   for   establishing  a
                   separation of the components of the combined emission to
                   indicate  the  nature,  extent, quantity and  degree  of
                   emission arising from each  such  source operation, then
                   all of the applicable prohibitions  shall  apply to each
                   such source operation separately.

               304 COMBINED  EMISSIONS,  UNSEPARATED:   If air contaminants
                   from two or more source operations are combined prior to
                   emission, and the combined emissions cannot be separated
                   according  to the requirements of Section  303  of  this
                   rule, then all  applicable prohibitions shall be applied
                   to the combined emission as if it originated in a single
                   source  operation,   subject   to   the  most  stringent
                   limitations    and   requirements   placed   by    these
                   prohibitions on  any  of the source operations whose air
                   contaminants are so combined.