LASAPCD ART.III HEX.CHR.EMIS.FROM CHR.PLT.&CHR.ACID ANOD.OP
LAST REVISED 11/11/11


                                  ARTICLE III
                  
                  HEXAVALENT CHROMIUM EMISSIONS FROM CHROME PLATING
                       AND  CHROMIC ACID ANODIZING  OPERATIONS


          A.   PURPOSE
               To  comply  with the California Code of Regulations, Section
               93102,  by  controlling  airborne  emissions  of  hexavalent
               chromium.

          B.   DEFINITIONS
               1.   Ampere-hour
                    The integral  of electrical curent applied to a plating
                    tank (amperes) over a period of time (hours).

               2.   Anti-mist Additive
                    A chemical which  reduces  the  emission  rate from the
                    tank when added to and maintained in the plating tank.

               3.   Chrome
                    Metallic chrome.

               4.   Chrome Plating
                    Either hard or decorative chrome plating.

               5.   Chromic Acid
                    An  aqueous  solution  of chromium trioxide (CrO3),  or
                    commercial solution containing  chromic acid, dichromic
                    acid (H2CrO7), or trichromic acid (H2Cr3010).

               6.   Chromic Acid Anodizing
                    The electrolytic process by which  a  metal  surface is
                    converted  to  an  oxide  surface coating in a solution
                    containing chromic acid.

               7.   Chromium
                    Hexavalent chromium.

               8.   Control Equipment
                    Any device which reduces emissions  from  the emissions
                    collection system.

               9.   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.

               10.  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.

               11.  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.

               12.  Facility

                    A  business or businesses engaged in chrome plating  or
                    chromic  acid  anodizing which are owned or operated by
                    the same person  or persons and are located on the same
                    parcel or on contiguous parcels.

               13.  Facilitywide Emissions  from  Hard  Chrome  Plating  Or
                    Chromic Acid Anodizing

                    The  total  emissions  from  all hard chrome plating or
                    chromic acid anodizing at the  facility over a calander
                    year.  Emissions  shall be calculated  as  the  sum  of
                    emissions from the  emissions  collection system at the
                    facility.  The emissions from an  emissions  collection
                    system shall  be calculated by multiplying the emission
                    factor for that  emissions collection system by the sum
                    of ampere-hours consumed  during  that  year for all of
                    the tanks served by the emissions collection system.

               14.  Hard Chrome Plating

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

               15.  Plating Tank

                    Any container  used  to hold a chromium or chromic acid
                    solution for the purposes  of chrome plating or chromic
                    acid anodizing.

               16.  Uncontrolled  Chromium Emissions  From  The Hard Chrome
                    Plating Or Chromic Acid Anodizing Facility

                    The  chromium  emissions from the emissions  collection
                    systems at the facility  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.

          C.   REQUIREMENTS OF DECORATIVE CHROME PLATING FACILITIES

               1.   No  person  shall  operate  a decorative chrome plating
                    tank  unless  an  anti-mist  additive  is  continuously
                    maintained in the plating tank, or control equipment is
                    installed  and  used,  in  a  manner   which  has  been
                    demonstrated to and approved by the Control  Officer as
                    reducing chromium emissions by 95% or more relative  to
                    chromium  emissions  when  an anti-mist additive is not
                    maintained, or control equipment  is  not installed and
                    used.

          D.   REQUIREMENTS  FOR  HARD  CHROME  PLATING  AND  CHROMIC  ACID
               ANODIZING FACILITIES.

               1.   The owners or operators of all hard chrome  plating and
                    chromic  acid  anodizing  facilities  shall maintain  a
                    continuous  record  of  current  integrated  over  time
                    (ampere-hours)   for   all  plating  tanks   for   each
                    collection system used in  the  hard  chrome plating or
                    chromic  acid  anodizing  operations  and  shall,  upon
                    request, submit information to the Control Officer.

               2.   No person shall operate a plating tank for hard  chrome
                    plating  or chromic acid anodizing unless the tank  has
                    an emissions  collection  system whose design and whose
                    operational parameters are approved by the APCO.

               3.   No  person  shall  operate  a hard  chrome  plating  or
                    chromic anodizing tank unless:

                    a.   the   chromium   emissions  from   the   emissions
                         collection system  serving  the  plating tank have
                         been  reduced  by 95% or more of the  uncontrolled
                         chromium emissions or

                    b.   the   chromium  emissions   from   the   emissions
                         collection   system  serving the plating tank have
                         been reduced to less than  0.15 milligrams (mg) of
                         chromium  per  ampere-hour  of  electrical  charge
                         applied to the plating tank.

               4.   No  person  shall  operate  a  hard chrome  plating  or
                    chromic   acid   anodizing  tank  at  a   facility   if
                    facilitywide  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:

                    a.   the   chromium   emissions  form   the   emissions
                         collection systems  serving the plating tanks have
                         been reduced by at least  99%  of the uncontrolled
                         chromium emissions from the hard chrome plating or
                         chromic acid anodizing facility or

                    b.   the   chromium   emissions   from  the   emissions
                         collection systems are reduced  to  less than 0.03
                         mg. of chromium per ampere-hour electrical  charge
                         applied to the tanks.

               5.   No  person  shall  operate  a  hard  chrome  plating or
                    chromic   acid   anodizing   tank   at  a  facility  if
                    facilitywide  chromium  emissions  from   hard   chrome
                    plating  or  chromic  acid  anodizing are 10 pounds per
                    year or greater, unless:
                    
                    a.   the   chromium   emissions  from   the   emissions
                         collection systems  serving the plating tanks have
                         been reduced by at least 99.8% of the uncontrolled
                         chromium emissions from the hard chrome plating or
                         chromic acid anodizing facility or

                    b.   the   chromium  emissions   from   the   emissions
                         collection  systems are reduced to less than 0.006
                         mg. of chromium  per ampere-hour electrical charge
                         applied to the tanks.

          E.   COMPLIANCE SCHEDULE

               The owner or operator of any  facility  subject to this rule
               shall  comply with its provisions at the time  the  facility
               begins operation.