RFI - 20220156 Kauri St SWMP Rev B

                                            Figure 3.2 – DRAINS Pre-development catchment




                                           Figure 3.3 – DRAINS Post-development catchment


The results of the modelling against the range of design storms for the development under the existing and
proposed development conditions are shown in Table 3.1 Existing and proposed unmitigated site peak discharge
rates.
                              Table 3.1 Existing and proposed unmitigated site peak discharge rates

                                                                           Kauri Street
                                                                                                         Qchange
                                           A.E.P               Qexisting      Qproposed     Qchange       (%)
                                                               (m³/s)         (m³/s)        (m³/s)
                                            1EY                 0.021          0.043         0.022       105%
                                            50%                 0.026          0.052        0.026        100%
                                           0.2 EY               0.044            0.08       0.036         82%
                                            10%                 0.060          0.089        0.029         48%
                                             5%                 0.075          0.112        0.037         49%
                                             2%                 0.094          0.134         0.04         43%
                                             1%                 0.106          0.147        0.041         39%




Project number 20220156                                                                                              Page 9 of 27
File RECOR Stormwater Management Report - 20220156.docx, 2022-10-28 Revision 1

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