B07056.W-01A Complete - Stormwater [As Published] · 132007.2398

Concept Stormwater Management Plan
RSL Care – Cooroy Retirement Village

                   Table 6.4: General Properties of Bio-filtration Basin and Pod treatment nodes
                                                                  Treatment Node
                               Property
                                                   Bio-Filtration Basins    Bio-Filtration Pods
                         Filtration Depth (m)                0.6                     0.6
                         Ponding Depth (m)                   0.4                    0.25
                              Filter Media                  Sand                    Sand
                        Filter Median Particle
                                                             0.7                        0.7
                            Diameter (mm)
                         Saturated Hydraulic
                                                            360                         360
                        Conductivity (mm/hr)
                            Seepage Loss
                                                             0                           0
                                (mm/hr)


Default k and C* values have been adopted for each Basin and Pod node.

The Wetland and Pond treatment nodes have the following properties presented in Table 6.5.

                              Table 6.5: Properties of Wetland and Pond treatment nodes
                                                                   Treatment Node
                   Property
                                           North Wetland             South Wetland             South Pond
               Surface Areas
                                                 1202                     991                       216
                    (m2)
            Extended Detention
                                                 0.4                      0.2                       0.5
                 Depth (m)
              Permanent Pool
                                                 1072                     630                       150
                Volume (m3)
               Seepage Loss
                                                  0                        0                         0
                  (mm/hr)
            Evaporative Loss as
                                                 125                      125                       100
                 % of PET
             Notional Detention
                                                 25.2                    21.1                       20.2
                 Time (hrs)


The general properties of the rainwater tanks as modelled in the mitigated scenarios are presented in Table 6.6.
                               Table 6.6: Properties of Rainwater Tank treatment nodes
                                                        *Daily Demand
           Tank                  Capacity                                               Re-use Connections
                                                           of Re-use
 North Rainwater Tank             250 kL                  46.0 kL/day          Toilets, Laundry, External and Irrigation
 Central Rainwater Tank            39 kL                   3.0 kL/day          Toilets, Laundry, External
 South Rainwater Tank             350 kL                  43.0 kL/day          Toilets, Laundry, External and Irrigation
 RAC Rainwater Tank                50 kL                   7.6 kL/day          Toilets, Laundry
                                       *Daily Demand sourced from Water Balance Model




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