Att 8 - SWMP

             Table 2.1 – Catchment Parameters for Source Nodes

                                          Catchment A              Catchment B             Balance
                                                                                     (externally draining)

                         Roof                   952m2                355m2                      Nil

                                              (100% imp)           (100% imp)

                  Surface Level                 778m2                1247m2                   305m2

                                              (90% imp)             (90% imp)               (90% imp)




             Table 2.2 – Pollutant Load Estimates

                                   Source               Residual      % Reduction           Target

               Flow (ML/yr)            5.7                 5.0             3%

                TSS (kg/yr)            749                 144            81%               >80%

                 TP (kg/yr)            2.15                0.62           71%               >60%

                 TN (kg/yr)            16.4                7.2            56%               >45%

                   Gross               119                  0             100%              >90%
                 Pollutants
                  (kg/yr)




             Table 2.3 – Sizing of Stormwater Quality Treatment System Components

                                                   Catchment A                   Catchment B

                  Biopod Filter Area                      30m2                      25m2

                 Biopod Filter Depth                    0.45m                       0.45m

                   Biopod Extended                      200mm                      200mm
                      Detention



SWMP – 11-19 Hilton Tce Tewantin                                                                             7