EngSWMP

                                                                                                                  ENG
                                                      Engineering Report & Stormwater Management Plan
                                              Date:          22/09/2016     Document No.:     16144-ENG-01.Docx

                                               By:              MRS          Revision No.:              A




It is proposed that best practice stormwater treatment be used and therefore it is required to
demonstrate the achievement of the following load reduction targets:


                  POLLUTANT TYPES                         WATER QUALITY OBJECTIVE (WQO)
             Total Suspended Solids (TSS)                  80% reduction of average annual load
                 Total Phosphorus (TP)                     60% reduction of average annual load
                    Total Nitrogen(TN)                     45% reduction of average annual load
                 Litter/gross pollutants                   90% reduction of average annual load
      Table 5.2:             Water Quality Objectives

                     c. MUSIC Model
The software program Model for Urban Stormwater Improvement Conceptualisation (MUSIC)
Version 6, was used was used to assess pollutant generation and the performance of the
stormwater treatment measures for the proposed development. Selection and testing of
stormwater management options was undertaken in accordance with MUSIC Modelling
Guidelines prepared by Water by Design (2010).

The MUSIC model was set up using the site catchment area which was further split to include
roof areas, road areas and ground areas in accordance with the MUSIC Modelling Guidelines
prepared by Water by Design (2010). The figure below shows a schematic of these areas.




      Figure 5.2:            Music Model Roof, Road and Ground Areas Adapted from wbp
                             Architects Drawing 1620/DA/0.01/Rev 2

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