RFI - Attachment 3 - Stormwater Management Plan

                                                                                                   6.2 Laboratory Testing Collection Efficiency Sigmoidal
                                                                                                   Regression Lines continued


                                                                                    100%


                                                                                     80%
                                                       Collection efficiency (%)




                                                                                     60%


                                                                                     40%


                                                                                     20%


                                                                                      0%
                                                                                              2             4           8        16              32           64       128      256    512   1024      2048        4096   8192   16384

                                                                                                                                                                   Particle size (microns)




                                                                                                   Figure 2 - Sigmoidal regression line for the Ecosol™ Litter Basket, with a 1500 micron
                                                                                                   filtration bag indicating high capture efficiencies for a range of particle sizes.

6.3 Field Testing Particle Size Distribution Data

                                                 Ecosol Litter Basket Particle Size Distribution
                  100
                  90
                  80
                  70
                                                                                                                                                                                             Parafield Gardens
      Passing %




                  60                                                                                                                                                                         (Residential) 1.5mm

                  50                                                                                                                                                                         Pooraka Pre Cast Factory
                                                                                                                                                                                             (Industrial) 0.200mm
                  40
                                                                                                                                                                                             Techport (Commercial)
                  30                                                                                                                                                                         0.200mm

                  20
                  10
                  0
                                                                                                                                        13.200




                                                                                                                                                                       26.500
                                                                                                                                                               19000
                                                                                                                                                      16000
                                                                                                    2.360
                                         0.300



                                                                                   0.600




                                                                                                                        6.700
                         0.075

                                 0.150



                                                     0.425



                                                                                           1.180



                                                                                                                4.750



                                                                                                                                9.500




                                                                                                   Sieve Size


Figure 3 - Field testing Particle size distribution data for three separate
product installations.




                  URBAN                          ®

            ASSET SOLUTIONS
                        Page 9