SACAQMD RULE 441 ORGANIC SOLVENTS          
LAST REVISED 12/06/78          

          SACRAMENTO METROPOLITAN AQMD                RULES AND REGULATIONS
                                    RULE 441 ORGANIC SOLVENTS
                                         Adopted 12-6-78

                                              INDEX

          100 GENERAL
              101  PURPOSE
              102  EXEMPTIONS

          200 DEFINITIONS
              201  ORGANIC MATERIALS
              202  ORGANIC SOLVENTS
              203  PHOTOCHEMICALLY REACTIVE SOLVENTS
              204  SOLVENT CLASSIFICATION

          300 STANDARDS
              301  ORGANIC MATERIALS
              302  PHOTOCHEMICALLY REACTIVE SOLVENTS
              303  NON-PHOTOCHEMICALLY REACTIVE SOLVENTS
              304  SOLVENT DISPOSAL
              305  CLEANUP
              306  OTHER LIMITATIONS
              307  REQUIRED REDUCTIONS

          400 ADMINISTRATIVE REQUIREMENTS
              401  EQUIPMENT MAINTENANCE

          500 MONITORING AND RECORDS
              501  COMPOSITION AND CONSUMPTION RECORDS
          
          100 GENERAL

              101  PURPOSE: To limit emissions of organic solvents into the
                   atmosphere  that  may  result  from  the  use of organic
                   solvents.

              102  EXEMPTIONS:  The provisions of this rule shall not apply
                   to:
                   102.1   he  manufacture  of  organic  solvents,  or  the
                           transport  or  storage  of organic  solvents  or
                           materials containing organic solvents.
                   102.2   The    spraying    or   other   employment    of
                           insecticides, pesticides,  or herbicides.
                   102.3   The  employment,  application,   evaporation  or
                           drying of saturated halogenated hydrocarbons  or
                           perchloroethylene.
                   102.4   The   use  of  any  material,  in  any  article,
                           machine,   equipment     or   other  contrivance
                           described in Sections 301, 302,  303,  or 305 of
                           this rule if:
                           a.  The   volatile   content  of  such  material
                               consists only of water and organic solvents,
                               and
                           b.  The organic solvents  comprise not more than
                               20% by volume of said volatile content, and
                           c.  The volatile content is  not photochemically
                               reactive  as defined as in  section  203  of
                               this rule.
                           d.  The  organic   solvent   or   any   material
                               containing  organic  solvent  does  not come
                               into contact with flame.
                   102.5   The   use  of  any  material,  in  any  article,
                           machine,    equipment   or   other   contrivance
                           described in  Sections  301,  302, 303 or 305 of
                           this rule.
                           a.  The organic solvent content of such material
                               does  not  exceed  20%  by  volume  of  said
                               material, and
                           b.  The  volatile content is not photochemically
                               reactive  as  defined in section 203 of this
                               rule, and
                           c.  The   organic  solvent   or   any   material
                               containing  organic  solvent  does  not come
                               into contact with flame.
                   102.6   The   use   of   equipment   for   which   other
                           requirements  are  specified  by Rules 446, 447,
                           448  or  449  or  which  are  exempt   from  air
                           pollution control requirements by said rules.

          200 DEFINITIONS

              201  ORGANIC   MATERIALS:    Chemical   compounds  of  carbon
                   excluding  carbon  monoxide,  carbon  dioxide,  carbonic
                   acid,   metallic   carbides,  metallic  carbonates   and
                   ammonium carbonate.

              202  ORGANIC SOLVENTS:  Diluents and thinners and are defined
                   as  organic materials  which  are  liquids  at  standard
                   conditions  and  which are used as dissolvers, viscosity
                   reducers or cleaning  agents, except that such materials
                   which exhibit a boiling  point higher than 1050C (221oF)
                   at 0.5 millimeters mercury  absolute  pressure or having
                   an equivalent vapor pressure shall not  be considered to
                   be  solvents  unless  exposed to temperatures  exceeding
                   105oC (221oF).

              203  PHOTOCHEMICALLY REACTIVE  SOLVENTS:  Any solvent with an
                   aggregate of more than 20%  of its total volume composed
                   of chemical compounds classified  below  or which exceed
                   any  of the following individual percentage  composition
                   limitations, referred to the total volume of solvent:
                   a.      A   combination   of   hydrocarbons,   alcohols,
                           aldehydes, esters, ethers, or ketones having  an
                           olefinic    or    cycle-    olefinic   type   of
                           unsaturation:  5%.
                   b.      A combination of aromatic compounds  with  eight
                           or  more  carbon  atoms  to  the molecule except
                           ethylbenzene:  8%.
                   c.      A  combination of ethylbenzene,  ketones  having
                           branched         hydrocarbon         structures,
                           trichloroethylene or toluene:  20%.
              204  SOLVENT CLASSIFICATION: Whenever any organic solvent  or
                   any constituent of any organic solvent may be classified
                   from  its  chemical  structure into more than one of the
                   above groups of organic compounds listed in section 203,
                   it shall be considered  as a member of the most reactive
                   chemical group, that is,  that  group  having  the least
                   allowable percent of the total volume of solvents.

          300 STANDARDS

              301  ORGANIC  MATERIALS:   A person shall not discharge  into
                   the atmosphere more than  6.8  kilograms  (15 pounds) of
                   organic  materials  in  any one day, nor more  than  1.4
                   kilograms  (3.1  pounds)  in  any  one  hour,  from  any
                   article, machine, equipment  or  other  contrivance,  in
                   which  any  organic  solvent  or any material containing
                   organic  solvent comes into contact  with  flame  or  is
                   baked, heat-cured  or  heat-polymerized, in the presence
                   of oxygen, unless said discharge  has been reduced by at
                   least  85%.  Those portions of any series  of  articles,
                   machines, equipment  or  other contrivances designed for
                   processing a continuous web,  strip  or  wire which emit
                   organic materials and using operations described in this
                   section shall be collectively subject to compliance with
                   this section.

              302  PHOTOCHEMICALLY REACTIVE SOLVENTS:  A person  shall  not
                   discharge  into  the  atmosphere  more than 18 kilograms
                   (39.7 pounds) of organic materials  in  any one day, nor
                   more  than 3.6 kilograms (7.9 pounds) in any  one  hour,
                   from  any   article,   machine,   equipment   or   other
                   contrivance  used  under conditions other than described
                   in  Section  301  for  employing,   or   applying,   any
                   photochemically  reactive solvent, as defined in Section
                   203,   or  material  containing   such   photochemically
                   reactive solvent, unless said discharge has been reduced
                   by at least 85%. Emissions of organic materials into the
                   atmosphere  resulting  from  air  or  heated  drying  of
                   products for the first 12 hours after their removal from
                   any  article,  machine,  equipment, or other contrivance
                   described  in  this  section   shall   be   included  in
                   determining  compliance  with  this  section.  Emissions
                   resulting from baking, heat-curing, or heat-polymerizing
                   as  described  in  Section  301  shall  be excluded from
                   determination  of  compliance  with this section.  Those
                   portions of any series of articles,  machines, equipment
                   or  other  contrivances  designed for processing  for  a
                   continuous  web,  strip,  or  wire  which  emit  organic
                   materials and using operations described in this section
                   shall be collectively subject  to  compliance  with this
                   section.

              303  NON-PHOTOCHEMICALLY  REACTIVE SOLVENTS:  A person  shall
                   not  discharge  into  the   atmosphere  more  than  1350
                   kilograms (2,970 pounds) of organic materials in any one
                   day, nor more than 200 kilograms (441 pounds) in any one
                   hour,  from  any article, machine,  equipment  or  other
                   contrivance in  which  any  non-photochemically reactive
                   organic solvent or any material  containing such solvent
                   is employed or applied, unless said  discharge  has been
                   reduced by at least 85%.  Emissions of organic materials
                   into the atmosphere resulting from air or heated  drying
                   of  products  for the first 12 hours after their removal
                   from  any  article,   machine,   equipment,   or   other
                   contrivance  described in this section shall be included
                   in determining  compliance with this section.  Emissions
                   resulting from baking, heat-curing, or heat-polymerizing
                   as  described in Section  301  shall  be  excluded  from
                   determination  of  compliance  with this section.  Those
                   portions of any series of articles, machines, equipment,
                   or   other   contrivance  designed  for   processing   a
                   continuous  web,   strip  or  wire  which  emit  organic
                   materials and using operations described in this section
                   shall be collectively  subject  to  compliance with this
                   section.

              304  SOLVENT DISPOSAL:  A person shall not,  during  any  one
                   day,  dispose  of  a  total  of  more than 5 liters (1.3
                   gallons)  of  any photochemically reactive  solvent,  as
                   defined in section  203  or  of  any material containing
                   more   than   5  liters  (1.3  gallons)  of   any   such
                   photochemically reactive solvent by any means which will
                   permit  the  evaporation   of   such  solvent  into  the
                   atmosphere.

              305  CLEANUP:   Emissions  of  organic  materials  into   the
                   atmosphere    from    cleanup    with    cleanup    with
                   photochemically reactive solvent as defined  in  Section
                   203   of   any  article,  machine,  equipment  or  other
                   contrivance  described in Sections 301, 302 or 303 shall
                   be  included  with   the   other  emissions  of  organic
                   materials from that article, machine, equipment or other
                   contrivance for determining compliance with this rule.

              306  OTHER LIMITATIONS:  In addition  to  other  restrictions
                   contained in these rules and regulations:
                   306.1   A  person  shall  not  use,  in any dry cleaning
                           operation,  organic  solvents containing  4%  or
                           more by volume of any  photochemically  reactive
                           organic  material  as  defined  in  Section  203
                           unless  the emissions of the discharged organics
                           are reduced  by 90% or more by use of any of the
                           methods described in Section 307.
                   306.2   A person shall not discharge into the atmosphere
                           any organic materials  from  surface  degreasing
                           operations unless they are either reduced  by at
                           least  85%,  or  unless  such  materials are not
                           photochemically reactive as defined  in  Section
                           203.
                   306.3   A  person  shall not manufacture, for use within
                           Sacramento County,  nor  use any photochemically
                           reactive solvent as defined  in  Section 203 for
                           the  purpose of thinning or diluting  any  metal
                           surface coating.

              307  REQUIRED REDUCTIONS:   Emissions  of  organic  materials
                   into   the  atmosphere  required  to  be  controlled  by
                   Sections 301, 302 or 303 shall be reduced by:
                   307.1   Incineration,  provided  that 90% or more of the
                           carbon in the organic material being incinerated
                           is oxidized to carbon dioxide, or
                   307.2   Absorption, or
                   307.3   Processing  in a manner determined  by  the  Air
                           Pollution  Control   Officer   to  be  not  less
                           effective than 307.1 or 307.2 above.

          400 ADMINISTRATIVE REQUIREMENTS

              401  EQUIPMENT    MAINTENANCE:     A   person   incinerating,
                   adsorbing,  or  otherwise  processing  organic  material
                   pursuant to this rule shall  provide,  properly install,
                   and maintain in calibration, in good working  order  and
                   in  operation,  devices as specified in the Authority to
                   Construct or the  Permit  to Operate, or as specified by
                   the  Air  Pollution  Control  Officer,   for  indicating
                   temperatures,   pressures,   rates  of  flow  or   other
                   operating conditions necessary  to  determine the degree
                   of effectiveness of air pollution control.

          500 MONITORING AND RECORDS

              501  COMPOSITION AND CONSUMPTION RECORDS:   Any  person using
                   organic  solvents  or  any materials containing  organic
                   solvents shall supply the Air Pollution Control Officer,
                   upon request, and in the  manner  and form prescribed by
                   him,  written  evidence  of  the  chemical  composition,
                   physical properties and amount consumed for each organic
                   solvent used.