SCAQMD RULE 1303 REQUIREMENTS
LAST REVISED 05/03/91

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

          RULE 1303.REQUIREMENTS

          (a)  Best Available Control Technology (BACT):
               The  Executive  Officer shall deny the permit to construct
               for any relocation  or for any new or modified permit unit
               which  results  in  a  net   emission   increase   of  any
               nonattainment    air    contaminant,    any    halogenated
               hydrocarbons, or ammonia unless BACT is employed  for  the
               new   or   relocated   permit   unit  or  for  the  actual
               modification to an existing permit unit.

          (b)  The Executive Officer shall, except  as Rule 1304 applies,
               deny  the  permit  to  construct for any new  or  modified
               permit unit which results  in  a  net emission increase of
               any nonattainment air contaminant at  a  facility,  unless
               each of the following requirements is met:
               (1)  Modeling:
                    The  applicant substantiates with modeling, according
                    to Appendix  A  or  other  analysis  approved  by the
                    Executive   Officer,   that   the   new  facility  or
                    modification will not cause a significant increase in
                    an air quality concentration as specified in Table A-
                    2 of Appendix A.
               (2)  Emission Offsets:
                    The accumulated emissions in the NSR  Balance  at the
                    subject   facility   shall   be  offset  by  emission
                    reductions.  Any such offsetting  emission reductions
                    shall be divided by an offset factor  of  1.2, except
                    that  facilities  receiving credit from the Community
                    Bank or the Priority  Reserve  shall  use  an  offset
                    factor of 1.0.  Unless credits are obtained from  the
                    Community  Bank,  or the Priority Reserve, facilities
                    located in the South  Coast  Air Basin are subject to
                    the Sensitive Zone requirements  specified  in Health
                    and Safety Code Section 40410.5, and must either meet
                    the location requirements specified in Appendix  B or
                    the  applicant  must  demonstrate  to  the  Executive
                    Officer  a  net  air  quality  benefit  in  the  area
                    impacted by the emissions from the subject facility.
                    Offsets   shall  be  obtained  either  from  Emission
                    Reduction Credits  approved pursuant to Rule 1309, or
                    from allocations from  the  Community  Bank  approved
                    pursuant to Rule 1309.1.
               (3)  Facility Compliance
                    The  subject  facility  complies  with all applicable
                    rules and regulations of the District.
               (4)  Major Polluting Facilities:
                    In addition to the above requirements,  any new Major
                    Polluting  Facility  or  Major  Modification   at  an
                    existing  Major  Polluting  Facility  shall  meet the
                    requirements in the Code of Federal Regulations in 40
                    CFR,  Part 51, Subpart I - Review of New Sources  and
                    Modifications.
               In carrying  out  the  BACT  provisions  of this Rule, the
               Executive  Officer  shall periodically publish  guidelines
               indicating the administrative  procedures and requirements
               for  commonly  processed  permit units.   BACT  for  other
               permit unit categories shall  be  determined on a case-by-
               case basis using the definition of  BACT  in Rule 1302 and
               the general administrative procedures and requirements  of
               the  BACT  guideline.  Where the requirements of paragraph
               (a) are applicable  to  a  small  business,  the Executive
               Officer  shall  consider cost-effectiveness in determining
               the level of BACT  required  for  new  or  modified permit
               units  at  such  a facility, provided the applicant  fully
               substantiates his  eligibility  as  a  small  business, as
               defined  in  Rule  102.  In determining cost-effectiveness
               for a permit unit the  emission increase shall include the
               accumulated  emission increases  and  decreases  for  that
               permit unit which have occurred since October 8, 1976.


                                    APPENDIX A

          The following sets  forth  the procedure for complying with the
          air quality modeling requirements as specified by Rule 1303(b).
          An applicant must either (1)  provide  an analysis, approved by
          the  Executive  Officer,  or  (2) show by using  the  Screening
          Analysis  below, that a significant  increase  in  air  quality
          concentration will not occur.

          Table A-1 of the screening analysis is subject to change by the
          Executive Officer, based on improved modeling data.

          At the present time, modeling for ROG and SOx is not required.



                                SCREENING ANALYSIS

          Compare the  emissions  from the equipment you are applying for
          to those in Table A-1.  If  the  emissions  are  less  than the
          allowable  emissions, no further analysis is required.  If  the
          emissions are  greater  than  the  allowable  emissions, a more
          detailed air quality modeling analysis is required.



                                     Table A-1

                                Allowable Emissions
                         for Noncombustion Sources and for
               Combustion Sources less than 40 Million BTUs per hour


          Heat Input Capacity     NOx      CO        PM10
          (million BTUs/hr)       (lbs/hr) (lbs/hr)  (lbs/hr)
          
          Noncombustion Source    0.068     3.7      0.41

                2                 0.20     11.0      1.2
                5                 0.31     17.1      1.9
               10                 0.47     25.9      2.8
               20                 0.86     47.3      5.2
               30                 1.26     69.3      7.6
               40                 1.31     72.1      7.9



                                     TABLE A-2

                  Most Stringent Ambient Air Quality Standard and
                         Allowable Change in Concentration
                For Each Air Contaminant/Averaging Time Combination

                                                         Significant 
                                     Most Stringent      Change in
        Air           Averaging      Air Quality         Air Quality
        Contaminant   Time           Standard            Concentration
        -----------   ---------   --------  ---------   --------- --------

        Nitrogen        1-hour    25 pphm   500 ug/m3   1 pphm    20 ug/m3
         Dioxide        Annual    5.3 pphm  100 ug/m3   0.05 pphm  1 ug/m3

        Carbon          1-hour    20 ppm     23 mg/m3   1 ppm     1.1 mg/m3
         Monoxide       8-hour    9.0 ppm    10 mg/m3   0.45 ppm  0.50 mg/m3

        Suspended      24-hour         50 ug/m3              2.5 ug/m3
         Particulate
         Matter-<10um  Annual
         (PM10)        Geometric Mean  30 ug/m3              1 ug/m3

          Sulfate       24-hour        25 ug/m3              1 ug/m3



                                    APPENDIX B

                  AVAILABLE AREAS FOR OBTAINING EMISSION OFFSETS

               (All numbers refer to air quality monitoring areas.)


New         Available Offsetting
Source      Source Locations

1  -  1 2 3 4 5 6 7 8 11 12
2  -  1 2 3 6 7  12
3  -  1 2 3 4 12
4  -  1 2 3 4 5  8  11  12  16  17  18
5  -  3 4 5 12 16  17  18
6  -  1 2 3 4 5  6  7  12
7  -  1 2 3 4 5  7  12
8  -  1 2 3 4 5  8  11  12  16  17  18
9  -  1 2 3 4 5  8  9  10  11  12  17  18
10 -  1 2 3 4 5  8  9  10  11  12  16  17  18  32  33
11 -  1 2 3 4 5  8  9  10  11  12  16  17  18
12 -  1 3 4 5 11  12
13 -  1 2 3 4 5  6  7  12  13
14 -  1 2 6 7 13  14
15 -  1 2 3 4  5  7  8  9  10  11  12  15
16 -  3 4 5 10 11  12  16  17  18
17 -  3 4 5 12  16  17  18
18 -  3 4 5 12  16  17  18
19 -  3 4 5 12  16  17  18  19  20
20 -  3 4 5 12  16  17  18  19  20
21 -  3 4 5 12  16  17  18  19  20  21
22 -  1 2 3 4 5 10  11  12  16  17  18  19  22  32  33
23 -  1 2 3 4 5 10  11  12  16  17  18  19  22  23  32  33
24 -  3 4 5 10  11  12  16  17  18  19  22  23  24
25 -  3 4 5 10  11  12  16  17  18  19  21  22  25
26 -  3 4 5 10  11  12  16  17  18  22  24  26
27 -  3 4 5 10  11  12  16  17  18  19  22  24  27
28 -  3 4 5 8 9 10  11  12  16  17  18  22  23  28
29 -  1 3 4 5 8 9 10  11  12  16  17  18  22  23  28  29  32  33  34
30 -  1 3 4 5 8 9 10  11  12  16  17  18  22  23  29  30  32  33  34  35
31 -  1 3 4 5 8 9 10  11  12  16  17  18  22  23  29  30  31  32  33  34  35
32 -  1 2 3 4 5 8 9 10  11  12  16  17  18  32  33
33 -  1 2 3 4 5 8 9 10  11  12  16  17  18  22  32  33
34 -  1 2 3 4 5 8 9 10  11  12  16  17  18  23  32  33  34
35 -  1 2 3 4 5 8 9 10  11  12  16  17  18  23  32  33  34  35
36 -  1 2 3 4 5 8 9 10  11  12  16  17  18  32  33  36
37 -  1 2 3 4 5 8 9 10  11  12  16  17  18  32  33  36  37
38 -  1 2 3 4 5 8 9 10  11  12  16  17  18  32  33  36  37  38
  
NOTE:  Contact the district to obtain a copy of the map that outlines 
       the 40 source/receptor areas for monitoring.





                 Insert South Coast AQMD Source Receptor Areas Map