Appendix I - Stormwater Management Plan

       5         Conclusion

                 Water quality objectives have been demonstrated to be achieved through the
                 implementation of a treatment train that incorporates gross pollutant traps/filter bags
                 and a ZPG Stormfilter system to reduce total suspended solids (TSS), total
                 phosphorus (TP), total nitrogen (TN) and gross pollutants.
                 Appropriate erosion and sediment control measures will be required to be prepared
                 and implemented on site during construction activities in order to minimise water
                 quality impacts during the construction phase.

                 The stormwater quantity management assessment demonstrates that overland flow
                 within the network is reduced as a result of this development by the inclusion of the
                 pipe network on the development site. Gateway Drive will therefore benefit as result
                 of reduced overland flow contributing to the road.

                 A PCdrain analysis determined that the proposed internal stormwater network was
                 sufficient to accommodate 10 year ARI flows.

                 Notwithstanding the assessment, further detailed design of the internal stormwater
                 system and connection to the existing pipe network will be required to be undertaken
                 as part of the future Operational Works application for the development.




Mogpropmanagement Pty Ltd                         Page 13                                   205-002-002R
Stormwater Management Plan
Noosaville Site