H - Revised Integrated Water Management Plan by Cardno (inc MUSIC file) (13.09.19)

                                                                                     Integrated Water Management Plan
                                                                             Noosa Marketplace : 2-20 HOFMANN DRIVE



6.3       MUSIC Model Results
The results from the MUSIC modelling are presented in Table 6-7. As demonstrated by this table, the water
quality objectives have been satisfied for all pollutants.
              MUSIC Model Results
                            Mean Annual Load (kg/yr)
       Parameter                                         % Removal   Target (%)
                              Sources        Residual
 Total Suspended Solids         9940            941        90.5         80
 Total Phosphorus               19.4            7.17        63          60
 Total Nitrogen                  135            61.1       50.3         45
 Gross Pollutants                969           0.991        99          99.9


6.4       Construction Phase Water Quality Management
The construction phase of the development requires erosion and sediment control measures to be put in place
to ensure that there is not a significant increase in the pollutant loads discharging from the site. During the
construction phase an erosion and sediment control plan will be developed ensuring that the construction
stage stormwater quality objectives are met. When appropriate, implemented erosion and sediment controls
will be removed, generally as a minimum when 80% site cover has been achieved.
Further erosion and sediment control measures will be implemented in accordance with Council requirements
and in consideration of the Best practice guidelines for the control of stormwater pollution from building sites
(Healthy Waterways, 2002).



6.5       Maintenance
Maintenance of the stormwater quality devices is to be carried out by Body Corporate. During the construction
phase, erosion and sediment control devices will be maintained by the contractor/developer.
The maintenance requirements of any treatment devices installed are to be carried out in accordance with
water sensitive urban design (WSUD) and manufacturer’s guidelines.




V190428 | 10 September 2019 | Commercial in Confidence                                                            22