Attachment 4a - Engineering Report Part 1 · MCU18/0015

7.3.3 MUSIC Model Results


The results of the MUSIC model are shown in Table 7.3.3a below.




                               Table 7.3-3a Treatment Train Effectiveness
                             Flow          TSS          TP           TN         Gross
                             ML/y         Kg/y         Kg/y         Kg/y      Pollutant
                                                                                 Kg/y
 Source Load                 6.62         1090         2.25         13.8         134
 Residual Load               6.27          189        0.891         7.21         5.51
 % Reduction                  5.2         82.6         60.3         47.7         95.9
 % Target Reduction            -           80           60           45           90




Inspection of Table 7.3.3a shows that the target pollutant load reductions have been
achieved for the site.


Refer to the attached MUSIC Model data file (Appendix D) for preliminary details. It is
anticipated that detailed design of the water quality treatment devices will be undertaken
as part of future Operational Works applications.




7.3.4 Maintenance of WSUD Devices


The proposed water quality treatment devices and rainwater harvesting tanks will be
privately owned and maintained. A detailed Operational Phase Maintenance Plan will be
prepared as part of future Operational Works applications.




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