Appendix E - Stormwater Management Plan · MCU22/0140

                                                                                                              ingeniir


                                OPAL LANE UNITS DETENTION TANK PROPERTIES
                             Roof/Impervious Area Connected                         100%
                             Eaves Gutter Size                                     1% AEP
                             Number of Tanks                                           2
                             Total Detention Capacity                              3,000L
                             Total Retention/Re-use Capacity                       3,000L
                             Height                                               2020mm
                             Length                                               2600mm
                             Width                                                820mm
                                                                            QTank's 3,000 Litre
                             Example Product
                                                                         Slimline Poly Water Tank
                                        Table 3: Opal Lane Units Detention tank properties



                               RUBY STREET UNITS DETENTION TANK PROPERTIES
                             Roof/Impervious Area Connected                         100%
                             Eaves Gutter Size                                     1% AEP
                             Number of Tanks                                           1
                             Total Detention Capacity                              3,000L
                             Height                                                900mm
                             Length                                               2500mm
                             Width                                               250mm
                                                                          Duraplas 3000L Lattice
                             Example Product
                                                                           Underground Tank
                                       Table 4: Ruby Street Units Detention tank properties

The outlet configuration of the tanks is proposed to be constructed of an external standpipe, with outlet
orifices drilled into the exterior of the tank with puddle flanges to connect to the standpipe. The outlet
details are presented in Table 5 and Table 6.

                             OPAL LANE UNITS DETENTION TANK OUTLET DETAILS
                          Feature                              Size                        Height from base
                  Top of Tank Overflow               As per manufacturer                         2020mm
                  Top Outlet                            90mm diameter                       1900mm
                                                                                            1010mm
                  Low Flow                              35mm diameter                 (retention below this
                                                                                             height)
                                      Table 5: Opal Lane Units Detention tank outlet details



                             RUBY STREET UNITS DETENTION TANK OUTLET DETAILS
                          Feature                              Size                        Height from base
                  Top of Tank Overflow               As per manufacturer                         1000mm
                  Top Outlet                            90mm diameter                            800mm
                  Low Flow                              30mm diameter                             0mm
                                      Table 6: Ruby Street Units Detention tank outlet details



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