KERAPCD RULE 405 PARTICULATE MATTER-EMISSION RATE          
LAST REVISED 05/00/89
          
          
          RULE 405 Particulate Matter - Emission Rate - Adopted 4/18/72, 
                   Amended 7/18/83, Renumbered 5/89

          This Rule shall not apply to new equipment for which an initial
          application for a permit is accepted after September 12, 1982,
          has not been approved as of July 18, 1983 and which meets all of
          the following requirements:

          A.  Achieves Lowest Achievable Emission Rate or uses Best
              Available Control Technology as defined in Sections I.A. and
              I.F. of Rule 210.1, for Federal non-attainment and attainment
              pollutants, respectively;

          B.  Results in a net air quality benefit in the area affected by
              emissions from such equipment, as determined by the Air
              Pollution Control Officer; and

          C.  Otherwise meets the requirements of Rule 210.1.

          A person shall not discharge into the atmosphere from any source
          operation, particulate matter in excess of the following process
          weight tables:

                         Process Weight Table - Valley Basin

                              ALLOWABLE RATE OF EMISSION
                             BASED ON PROCESS WEIGHT RATE


                       Process Weight             Emission Rate
                           Lbs/Hr.                    Lbs/Hr.

                               50                      0.36
                              100                      0.56
                              500                      1.52
                            1,000                      2.34
                            5,000                      6.34
                           10,000                      9.74
                           20,000                     14.97
                           60,000                     29.57
                           80,000                     31.23
                          120,000                     33.33
                          160,000                     34.90
                          200,000                     36.17
                          400,000                     40.41
                        1,000,000                     46.79

          Interpolation of the data for the process weight rates up to
          60,000 lbs/hr. shall be accomplished by the use of the equation:

                            E = 3.59P0.62<30 tons/hr.

          and interpolation and extrapolation of the data for process
          weight rates in excess of 60,000 lbs/hr. shall be accomplished by
          use of the equation:

                              E = 17.31P0.16> tons/hr.

          Where:  E = Emissions in pounds per hour.
                  P - Process weight rate in tons per hour.


                         Process Weight Table - Valley Basin

                              ALLOWABLE RATE OF EMISSION
                             BASED ON PROCESS WEIGHT RATE

          Process Weight    Emission Rate   Process Weight  Emission Rate
              Lbs/Hr.           Lbs/Hr.         Lbs/Hr.         Lbs/Hr.

              250 or less        1.03           6,500            7.71
              300                1.20           7,000            8.05
              350                1.35           7,500            8.39
              400                1.50           8,000            8.71
              450                1.63           8,500            9.03
              500                1.77           9,000            9.36
              600                2.01           9,500            9.67
              700                2.24          10,000            10.00
              800                2.43          12,000            11.28
              900                2.60          14,000            12.50
            1,000                2.80          16,000            13.74
            1,200                3.12          18,000            14.97
            1,400                3.40          20,000            16.19
            1,600                3.66          30,000            22.22
            1,800                3.91          40,000            28.30
            2,000                4.14          50,000            34.30
            2,500                4.64          60,000 or more    40.00
            3,000                5.10
            3,500                5.52
            4,000                5.93
            4,500                6.30
            5,000                6.67
            5,500                7.03
            6,000                7.37

          Where the process weight per hour falls between figures listed in
          the table, the exact weight of permitted discharge shall be
          determined by linear interpolation.