Attachment 4 - Stormwater Management Plan by O2 · MCU13/0251

5.            MUSIC Modelling

5.1.          Software Version
MUSIC Version 6.0 was utilised to analyse the proposed stormwater quality treatment train.

5.2.          Guidelines
The MUSIC analysis has been undertaken utilising the following guidelines:

          Water by Design, ‘MUSIC Modelling Guidelines for South East Queensland, 2009’

5.3.          Water Quality Objectives
The following water quality objectives have been adopted from the Department of State Development,
Infrastructure and Planning State Planning Policy 2013.
Table 1 – Water Quality Objectives

                         Minimum reductions in Mean Annual Loads from unmitigated catchment

     Total Suspended Solids                Total Phosphorus                Total Nitrogen                 Gross Pollutants

              (TSS)                              (TP)                           (TN)                          > 5mm

              80%                                60%                            45%                             90%


5.4.          Rainfall and Evapotranspiration Data
The following rainfall and evapotranspiration data was utilised for the analysis, in accordance with the
MUSIC Modelling Guidelines for South East Queensland.
Table 2– MUSIC Rainfall Data

Rainfall Location                            Time step                        Period                  Mean Annual Rainfall
                                                                                                            (mm)

Nambour DPI                                    6 min                       1989 - 1998                         1,517

Note, the MUSIC Modelling Guidelines for South East Queensland indicate the rainfall depth for the nominated simulation period is
1,527mm. However, the data provided by the BOM for gauging station 40282 – Nambour DPI results in a rainfall depth for the
period of 1,517mm

Table 3 – MUSIC Monthly Evapotranspiration Data (mm)

     Jan      Feb        Mar         Apr       May       Jun        Jul       Aug        Sep        Oct        Nov        Dec

     204      166        169         125        89        76        78         93        121        168        187        199


5.5.          Rainfall Runoff Parameters
The rainfall runoff parameters for the site were determined from the Water by Design MUSIC Modelling
Guidelines for South East Queensland.




STORMWATER MANAGEMENT PLAN – PEREGIAN VILLAGE MARKET                                                                      Page 7

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