SACAQMD RULE 480 CHROME PLATING AND CHROMIC ACID ANODIZING          
LAST REVISED 08/22/89          

          SACRAMENTO METROPOLITAN AQMD                RULES AND REGULATIONS
                        RULE 480 CHROME PLATING AND CHROMIC ACID ANODIZING
                                         Adopted 8-22-89

                                              INDEX

          100 GENERAL
              101  PURPOSE

          200 DEFINITIONS
              201  AMPERE-HOURS
              202  ANTI-MIST ADDITIVE
              203  CHROME
              204  CHROME PLATING
              205  CHROMIC ACID
              206  CHROMIC ACID ANODIZING
              207  CHROMIUM
              208  CONTROL EQUIPMENT
              209  DECORATIVE CHROME PLATING
              210  EMISSION FACTOR
              211  EMISSIONS COLLECTION SYSTEM
              212  FACILITY-WIDE  EMISSIONS  FROM  HARD  CHROME  PLATING OR
                   CHROMIC ACID ANODIZING
              213  HARD CHROME PLATING
              214  PLATING TANK
              215  UNCONTROLLED CHROMIUM EMISSIONS

          300 STANDARDS
              301  DECORATIVE CHROME PLATING
              302  HARD CHROME PLATING OR CHROMIC ACID ANODIZING

          400 ADMINISTRATIVE REQUIREMENTS
              401  RECORDKEEPING
              402  COMPLIANCE SCHEDULES

          500 TEST METHODS
              501  CHROMIUM EMISSIONS TEST PROCEDURE
          
          100 GENERAL

              101  PURPOSE: To limit the emission of hexavalent chromium to
                   the  atmosphere  from  chrome  plating and chromic  acid
                   anodizing operations.

          200 DEFINITIONS:  For  the purposes of this  rule  the  following
              definitions shall apply:

              201  AMPERE-HOURS:  The   integral   of   electrical  current
                   (amperes)  applied to a plating tank over  a  period  of
                   time (hours).

              202  ANTI-MIST  ADDITIVE:   A   chemical  which  reduces  the
                   emission rate from the tank when added to and maintained
                   in the plating tank.

              203  CHROME: Metallic chrome.

              204  CHROME PLATING: Hard or decorative chrome plating.

              205  CHROMIC ACID: An aqueous solution  of  chromium trioxide
                   (CrO3)  or  a  commercial  solution containing  chromium
                   trioxide,   chromic   acid  (H2CrO4),   dichromic   acid
                   (H2Cr2O7) or trichromic acid (H2Cr3O10).

              206  CHROMIC  ACID ANODIZING:  The  electrolytic  process  by
                   which a metal  surface  is converted to an oxide surface
                   coating by the action of  a  solution containing chromic
                   acid.

              207  CHROMIUM:  Hexavalent  chromium,  which  refers  to  the
                   valence state of +6 for  the  chromium  in  the  aqueous
                   solution.

              208  CONTROL EQUIPMENT: Any device which reduces chromium air
                   contaminant   emissions  from  an  emissions  collection
                   system and which  has been approved by the Air Pollution
                   Control Officer.

              209  DECORATIVE CHROME PLATING: The process by which chromium
                   is electrodeposited from a solution containing compounds
                   of chromium onto an object resulting in a chrome layer 1
                   micron (0.04 mil) thick or less.

              210  EMISSION FACTOR: The  mass  of chromium emitted during a
                   test  conducted in the emissions  collection  system  in
                   accordance  with  ARB  Test  Method  425, divided by the
                   ampere-hours  consumed  by  the  tanks  in   the  tested
                   emissions  collection system, expressed as the  mass  of
                   chromium emitted  per  ampere-hour of electrical current
                   consumed.

              211  EMISSIONS COLLECTION SYSTEM:  A device or apparatus used
                   to  gather  chromium emissions from  the  surface  of  a
                   chrome plating or chromic acid anodizing tank or tanks.

              212  FACILITY-WIDE  EMISSIONS  FROM  HARD  CHROME  PLATING OR
                   CHROMIC ACID ANODIZING: The total uncontrolled  chromium
                   emissions  from all hard chrome plating or chromic  acid
                   anodizing at the stationary source over a calendar year.
                   Emissions shall  be  calculated  as the sum of emissions
                   from   the   emissions  collection  system(s)   at   the
                   stationary source.  The  emissions  from  each  emission
                   collection system shall be calculated by multiplying the
                   emission factor for that emissions collection system  by
                   the  sum  of  the ampere-hours consumed during that year
                   for all of the  tanks served by the emissions collection
                   system.

              213  HARD CHROME PLATING:  The  process  by which chromium is
                   electrodeposited from a solution containing compounds of
                   chromium  onto  an object resulting in  a  chrome  layer
                   thicker than 1 micron (0.04 mil).

              214  PLATING TANK: Any  container  used to hold a chromium or
                   chromic acid solution for the purpose  of chrome plating
                   or chromic acid anodizing.

              215  SOURCE:  Any  operation that produces and/or  emits  air
                   pollutants.

              216  UNCONTROLLED CHROMIUM  EMISSIONS: The chromium emissions
                   from the emissions collection  systems at the stationary
                   source calculated as if no control  equipment is in use.
                   For  the  purpose  of determining compliance  with  this
                   rule,  the  uncontrolled  chromium  emissions  shall  be
                   calculated using  an  emission  factor  based  on  tests
                   conducted  in accordance with ARB Test Method 425 or  14
                   mg/ampere-hour, whichever is less.

          300 STANDARDS

              301  DECORATIVE CHROME PLATING - A person shall not operate a
                   decorative  chrome   plating  tank  unless  one  of  the
                   following control measures is used in a manner which has
                   been demonstrated to and  approved  by the Air Pollution
                   Control Officer (APCO) as reducing chromium emissions by
                   95%  or  more  relative  to  the  uncontrolled  chromium
                   emissions.
                   301.1   An anti-mist additive is continuously maintained
                           in the plating tank, or;
                   301.2   Control equipment is installed and used, or;
                   301.3   An  equivalent  method  approved   by   the  Air
                           Pollution Control Officer is installed and used.

              302  HARD CHROME PLATING OR CHROMIC ACID ANODIZING:
                   302.1   A person shall not operate a hard chrome plating
                           tank  or chromic acid anodizing tank unless  the
                           tank has  an  emissions  collection  system that
                           meets one of the following requirements:
                           a.  The  chromium  emissions  from the emissions
                               collection systems serving  the plating tank
                               are  reduced  by  at  least  95%  from   the
                               uncontrolled chromium emissions, or;
                           b.  The  chromium  emissions  from the emissions
                               collection systems serving  the plating tank
                               are reduced to less than 0.15 milligrams(mg)
                               of  chromium  per ampere-hour of  electrical
                               charge applied to the plating tank.
                   302.2   A person shall not operate a hard chrome plating
                           tank  or  chromic  acid   anodizing  tank  at  a
                           stationary   source   where  the   facility-wide
                           chromium emissions from  hard  chrome plating or
                           chromic acid anodizing are greater than 2 pounds
                           per  year,  but  less than 10 pounds  per  year,
                           unless  the  tank has  an  emissions  collection
                           system  that  meets   one   of   the   following
                           requirements:
                           a.  The  chromium  emissions  from the emissions
                               collection systems serving  the plating tank
                               are  reduced  by  at  least  99%  from   the
                               uncontrolled chromium emissions, or;
                           b.  The  chromium  emissions  from the emissions
                               collection systems serving  the plating tank
                               are reduced to less than 0.03 mg of chromium
                               per ampere-hour of electrical charge applied
                               to the plating tank.
                   302.3   A person shall not operate a hard chrome plating
                           tank  or  chromic  acid  anodizing  tank   at  a
                           stationary   source   where   the  facility-wide
                           chromium emissions from hard chrome  plating  or
                           chromic acid anodizing are greater than or equal
                           to  10  pounds  per year, unless the tank has an
                           emissions collection  system  that  meets one of
                           the following requirements:
                           a.  The  chromium  emissions  from the emissions
                               collection systems serving  the plating tank
                               are  reduced  by  at  least 99.8%  from  the
                               uncontrolled chromium emissions, or;
                           b.  The chromium emissions  from  the  emissions
                               collection systems serving the plating  tank
                               are   reduced  to  less  than  0.006  mg  of
                               chromium  per  ampere-hour electrical charge
                               applied to the plating tank.
                   302.4   Compliance shall be  verified  by source testing
                           every 24 months.

          400 ADMINISTRATIVE REQUIREMENTS

              401  RECORDKEEPING  REQUIREMENTS:  A  person subject  to  the
                   provisions of Section 300 of this  rule  shall  meet the
                   following applicable requirements:
                   401.1   A    weekly   record   of   anti-mist   additive
                           concentrations   or   any   other   measurements
                           recommended  by the manufacturer's specification
                           and the Air Pollution  Control  Officer shall be
                           maintained.  Recordkeeping  shall begin  on  the
                           date of final compliance.
                   401.2   A weekly record of current integrated  over time
                           (ampere-hours) for all plating tanks used  at  a
                           chrome   plating   or   chromic  acid  anodizing
                           stationary    source   shall   be    maintained.
                           Recordkeeping shall begin on August 22, 1989.
                   401.3   All records including  all pertinent information
                           relative to the operation  of the plating tanks,
                           all source testing, and all information relative
                           to  the  emissions  collection  system  and  the
                           control equipment shall  be  maintained  for two
                           years  and  shall  be  made available to the Air
                           Pollution Control Officer upon request.

              402  COMPLIANCE SCHEDULES
                   402.1   A person subject to the  provisions  of  Section
                           301  shall  be  in  final  compliance  with  the
                           requirements of Section 301, and shall submit to
                           the Air Pollution Control Officer an application
                           for  a Permit to Operate, no later than March 1,
                           1990.
                   402.2   A person  subject  to  the provisions of Section
                           302, except a person subject  to  the provisions
                           of  Subsection  302.2  shall meet the  following
                           compliance schedule:
                           a.  Submit to the Air Pollution  Control Officer
                               an application for a Permit to  Operate  the
                               plating  tank  no  later than March 1, 1990,
                               and;
                           b.  Submit to the Air Pollution  Control Officer
                               an  application  for Authority to  Construct
                               the equipment necessary  to  comply with the
                               requirements of Subsection 302.1,  if needed
                               no later than September 1, 1990, and;
                           c.  Achieve    final    compliance    with   the
                               requirements  of  Subsection 302.1 no  later
                               than March 1, 1991.
                   402.3   A person subject to the provisions of Subsection
                           302.2   shall  meet  the  following   compliance
                           schedule:
                           a.  Submit  to the Air Pollution Control Officer
                               an application  for  a Permit to Operate the
                               plating tank no later  than  March  1, 1990,
                               and;
                           b.  Submit  to the Air Pollution Control Officer
                               an application  for  Authority  to Construct
                               the equipment necessary to comply  with  the
                               requirements of Subsection 302.2, if needed,
                               no later than March 1, 1991, and;
                           c.  Achieve    final    compliance    with   the
                               requirements  of  Subsection 302.2 no  later
                               than September 1, 1991.
                   402.4   A person subject to the provisions of Subsection
                           302.3  shall, in addition,  meet  the  following
                           compliance schedule:
                           a.  Submit  to the Air Pollution Control Officer
                               an application  for  a Permit to Operate the
                               plating tank no later  than  March  1, 1990,
                               and;
                           b.  Submit  to the Air Pollution Control Officer
                               an application  for  Authority  to Construct
                               the equipment necessary to comply  with  the
                               requirements of Subsection 302.3, if needed,
                               no later than March 1, 1991, and;
                           c.  Achieve    final    compliance    with   the
                               requirements  of Subsection 302.3, no  later
                               than September 1, 1993.

          500 TEST METHODS
              501  Compliance with the chromium  emissions  requirement  in
                   Section 302 of this rule shall be determined by ARB Test
                   Method 425.