8. APP G. Engineering RFI Response

                Table 6.3: Rainfall – Runoff Parameters
                Flow Type Industrial             TSS log10 values                        TP log10 values   TN log10 values
                              Urban Surface
                                                 Mean       Std.                         Mean     Std.     Mean     Std.
                              Type
                                                            dev                                   dev.              dev.
                 Baseflow          Roof                     N/A             N/A           N/A      N/A     N/A       N/A
                                   Roads                    0.78            0.45         -1.11    0.48     0.14     0.20
                                   Ground level             0.78            0.45         -1.11    0.48     0.14     0.20
                 Stormflow         Roof                     1.30            0.44         -0.89    0.36     0.25     0.32
                                   Roads                    2.43            0.44         -0.30    0.36     0.25     0.32
                                   Ground level             1.92            0.44         -0.59    0.36     0.25     0.32



                MUSIC MODEL LAYOUT
                A MUSIC model has been created with three conceptual Legal Point of Discharge (LPOD)
                nodes in order to demonstrate that the site meets the pollutant removal targets as specified by
                Council and the State Planning Policy. Separate land use types have been modelled to
                represent; roof water runoff, runoff from hardstand impervious areas and runoff from grassed or
                otherwise pervious areas within each catchment. Appropriate percentage impervious factors
                have been applied to all nodes based on the proposed design detailed within the Engineering
                Drawings presented in Appendix B.

                Three separate bio-retention areas form the basis of the treatment train and is represented in
                the model with appropriate areas and volumes. A diagrammatic view of the MUSIC model
                layouts is presented in Figure 6.3.




139 Eumundi Noosa Road & 30 Lionel Donovan Drive, Noosaville Service Station and Retail Site—Stormwater
Management Plans
Hyder Consulting Pty Ltd-ABN 76 104 485 289                                                                                  13
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