SCAQMD RULE 1304 EXEMPTIONS
LAST REVISED 09/11/92

(Adopted Oct. 5, 1979)(Amended March 7, 1980)(Amended Sept. 10, 1982)
(Amended July 12, 1985)(Amended Jan. 10, 1986)(Amended August 1, 1986)
(Amended June 28, 1990)(Amended May 3, 1991)(Amended June 5, 1992)
(Amended Sept. 11, 1992)

          RULE 1304.EXEMPTIONS

          (a)  General

               Upon  approval by the Executive Officer, an exemption from
               Rule 1303(b)(1) and (b)(2) shall be allowed, provided BACT
               is utilized, for the following subject permit units.
               (1)  Replacements
                    Such   permit   unit   is  replacing  a  functionally
                    identical permit unit or  is a functionally identical
                    modification  to  a  permit  unit  and  there  is  no
                    increase in maximum rating, and the potential to emit
                    of any air contaminant will not  be  greater from the
                    new permit unit than from the replaced  permit  unit,
                    when  the  replaced  unit  was  operated  at the same
                    conditions and as if current BACT were applied.
               (2)  Electric Utility Steam Boiler Replacement
                    Such  equipment  is  replacement  of electric utility
                    steam boiler(s) with combined cycle  gas  turbine(s),
                    intercooled,   chemically-recuperated  gas  turbines,
                    other advanced gas  turbine(s); solar, geothermal, or
                    wind energy or other  equipment,  to  the extent that
                    such equipment will allow compliance with  Rule 1135.
                    The  new  equipment  must  have  a maximum electrical
                    power  rating  (in  megawatts)  that does  not  allow
                    basinwide electricity generating  capacity  on a per-
                    utility  basis  to increase.  If there is an increase
                    in basin-wide capacity,  only  the increased capacity
                    must be offset.
               (3)  Abrasive Blasting Equipment
                    Such   equipment   is   portable  abrasive   blasting
                    equipment complying with all state laws.
               (4)  Emergency Equipment
                    Such  equipment  is  exclusively  used  as  emergency
                    standby  equipment for  nonutility  electrical  power
                    generation   or  any  other  emergency  equipment  as
                    approved by the  Executive  Officer and the equipment
                    does not operate more than 200  hours per year and is
                    not  used in conjunction with any  utility  voluntary
                    demand reduction program.
               (5)  Air Pollution Control Strategies
                    An equipment modification or process change solely to
                    reduce   the  issuance  of  air  contaminants.   This
                    exemption  shall  not  apply  to landfill gas control
                    operations or to any modification  or  process change
                    made   for   the   purpose  of  achieving  regulatory
                    compliance.
               (6)  Emergencies
                    Emergency  operations,   such   as   emergency   soil
                    decontamination  or  excavation,  performed by, under
                    the jurisdiction of, or pursuant to  the requirements
                    of,   an   authorized  health  officer,  agricultural
                    commissioner,   fire  protection  officer,  or  other
                    authorized agency officer.  A person shall report any
                    emergency within  one  hour  of such emergency to the
                    District, or within one hour of  the time said person
                    knew   or  reasonably  should  have  known   of   its
                    occurrence.  A specific time limit for each operation
                    will be imposed.

          (b)  Portable Equipment

               Except at the initial location and upon  approval  by  the
               Executive  Officer,  an exemption from Rule 1303(b)(1) and
               (b)(2) shall be allowed,  provided  BACT  is utilized, for
               portable   equipment,  not  including  portable   internal
               combustion engines,  that  are periodically relocated, and
               are  not  used  more  than 90 calendar  days  at  any  one
               location in the District within a 12-month period.

          (c)  Portable Internal Combustion Engines

               Upon approval of the Executive  Officer  and provided BACT
               is utilized, portable internal combustion engines shall be
               exempt   from   the   allowable   change  in  air  quality
               concentration requirements in Rule  1303 paragraph (b)(1),
               provided that the following conditions are met:
               (1)  The engine is periodically relocated, and is not used
                    more than 90 calendar days at any one location in the
                    District within a 12-month period;
               (2)  Emissions from the engine, by itself, do not cause an
                    exceedance of any ambient air quality standard;
               (3)  Emissions from the engine do not exceed the following
                    limits:

                         Carbon Monoxide             550 pounds per day
                         Nitrogen Oxides             100 pounds per day
                         Reactive Organic Compounds   75 pounds per day
                         Particulate Matter          150 pounds per day
                         Sulfur Oxides               150 pounds per day; and,
               (4)  The  emissions  offset  requirements   in  Rule  1303
                    paragraph (b)(2) are met at the initial  location  of
                    such  equipment,  except  for  any  portable internal
                    combustion  engine initially located and  exclusively
                    operated within the Palo Verde Valley.

          (d)  Intra-Facility Portable Equipment
               (1)  Upon approval  by  the  Executive  Officer  using the
                    criteria   set  forth  below  and  provided  BACT  is
                    utilized,  internal   combustion   engines   and  gas
                    turbines  which  must be periodically moved within  a
                    facility because of  the  nature  of  their operation
                    shall  be  exempt  from the allowable change  in  air
                    quality  concentration   requirements  in  Rule  1303
                    paragraph (b)(1), provided  that all of the following
                    conditions are met:
                    (A)  The engine or turbine is used:
                         (i)  to    remediate    soil   or    groundwater
                              contamination  as  required   by   federal,
                              state,  or  local  law or by a judicial  or
                              administrative order; or
                         (ii) for flight-line operations.
                    (B)  The engine or turbine is  not periodically moved
                         solely  for the purpose of qualifying  for  this
                         exemption.
                    (C)  Emissions  from  the  engine,  by itself, do not
                         cause an exceedance of any ambient  air  quality
                         standard.
                    (D)  Emissions  from  the  engine  do  not exceed the
                         following limits:

                         Carbon Monoxide             550 pounds per day
                         Nitrogen Oxides             100 pounds per day
                         Reactive Organic Compounds   75 pounds per day
                         Particulate Matter          150 pounds per day
                         Sulfur Oxides               150 pounds per day.

               (2)  For  the  purpose  of  this  subdivision, flight-line
                    operations mean operations for  the ground support of
                    military and commercial aircraft,  and  includes, but
                    is  not limited to, the operation of power-generating
                    internal  combustion engines and gas turbines used to
                    support aircraft  systems  or start up aircraft power
                    plants.

          (e)  Upon approval by the Executive Officer,  an exemption from
               Rule  1303(b)(2)  shall  be  allowed,  provided   BACT  is
               utilized, for the following subject permit units.
               (1)  Relocations
                    Such  permit  unit  is  a  relocation  of an existing
                    permit  unit  within  the  District,  under the  same
                    operator   and  ownership  and  providing  that   the
                    potential to  emit of any air contaminant will not be
                    greater at the  new  location  than  at  the previous
                    location when the permit unit is operated at the same
                    conditions and as if current BACT were applied.   The
                    relocation   shall  also  meet  either  the  location
                    requirements specified in Appendix B of Rule 1303, or
                    the  applicant  must  demonstrate  to  the  Executive
                    Officer  a  net  air  quality  benefit in the area to
                    which the facility will locate.
                    The  permit  unit  NSR  entry will move  to  the  new
                    location.  The NSR Balance  will  be  adjusted to the
                    new potential to emit with BACT, but not to less than
                    an NSR Balance of zero.
               (2)  Concurrent Facility Modification
                    A concurrent facility modification with  an  emission
                    reduction   occurring   after  the  submittal  of  an
                    application  for  a permit  to  construct  a  new  or
                    modified  permit  unit,   but  before  the  start  of
                    operation  of  the  permit  unit,  provided  that  it
                    results in a net emission decrease,  as determined by
                    Rule 1306, and that the same emission  reductions are
                    not:
                    (A)  required by a Control Measure of the AQMP which
                         has been assigned a target implementation  date;
                         or
                    (B)  required  by  a proposed District rule for which
                         the first public  workshop  to  consider  such a
                         rule  has  been conducted.  This exclusion shall
                         remain in effect  for 12 months from the date of
                         such workshop, or until  the  Executive  Officer
                         determines  that the proposed rule is abandoned;
                         or
                    (C)  required  by  an   adopted  Federal,  State,  or
                         District rule, regulation or statute; or
                    (D)  from a category or class  of  equipment included
                         in  a  demonstration  program  required   by   a
                         District rule or regulation.
               (3)  Resource Recovery and Energy Conservation Projects
                    Cogeneration  technology  projects, resource recovery
                    projects  and qualifying facilities,  as  defined  in
                    Health and  Safety  Code  Sections  39019.5, 39019.6,
                    39047.5  and  39050.5,  shall  be  exempt   from  the
                    provisions  of  this rule only to the extent required
                    by  state  law,  including  Health  and  Safety  Code
                    Sections 42314, 42314.1, 42314.5, 41605, and 41605.5.
                    In no case shall these  sections provide an exemption
                    from federal law.
               (4)  Regulatory Compliance
                    Such equipment is installed  or  modified  solely  to
                    comply with District, state, or federal air pollution
                    control   laws,  rules,  regulations  or  orders,  as
                    approved by the Executive Officer, and provided there
                    is no increase in maximum rating.
               (5)  Regulatory Compliance for Essential Public Services
                    In the event  sufficient offsets are not available in
                    the priority reserve  and such equipment is installed
                    or modified solely to comply with District, state, or
                    federal pollution control laws, rules, regulations or
                    orders, and verification  of  such is provided to the
                    Executive Officer.