Information response

    20.2.   Estimates of patron/ passenger numbers
    20.3.   Where the ferry is to be moored and how it will be accessed
    20.4.   Arrangements in relation to access to destination jetties

Response
The proposed ferry is an additional transport option being explored for the development and is not
intended to form part of the development approval. Details and confirmation of the proposed ferry
have not been finalised at this stage.      Frequency of service may be half hourly, with hours of
operation dependent upon demand and time of year. The ferry being investigated is 12m long
and a catamaran design with electric motors and a roof supporting PV solar cells. The passenger
capacity may be as high as 48. The preference would be to make necessary arrangements to
allow the ferry to be moored at the Settlers Cove jetty, understanding this would require the
approval of Council and upgrading of the existing jetty to accommodate this. Alternatively, a
commercial mooring offsite would be required. Until the final size of the vessel and timing is
determined, no formal arrangements can be progressed. The proposed destination jetty is the
Woods jetty at the end of Hastings Street. While informal discussions with Council have been held
about is, no formal approach has been pursued. Should more detailed investigations establish the
ferry to be viable, then it would operate as ancillary to the approved use.

Issue - Stormwater drainage
While not wanting to discourage innovation, the RIP system does appear to be a high-maintenance
solution and at high-risk of failure compared to conventional drainage. A lower risk drainage
solution which still achieves the infiltration targets could be achieved through conventional
drainage and provision of pipeless biofiltration systems.

Information Required
21. Provide further information on the proposed rapid infiltration pits (RIPs) and justify the suitability
    compared to a conventional drainage solution, and specifically address the following:
    • The SWMP Appendix D spreadsheet calculations seem to use an impervious catchment
       area for the external catchment of 4437m2, whereas the catchment plan shows an area of
       ~1.1ha. Clarify this apparent discrepancy.
    • Provide current infiltration test data on the existing RIPs to demonstrate the infiltration rates
       both in the current state of the devices and following the routine maintenance required by
       the management plan
    • Update the maintenance plan for the RIPs to include a performance objective of ‘No
       ponding of water within RIPs between rainfall events’ or similar
    • Explain what structures will be present over the 600mm dia emergency relief pipe and how
       this pipe will be able to be accessed should maintenance or upgrade be required in the
       future
    • Explain why a more conventional solution (eg conventional drainage and pipeless
       bioretention) could not be adopted for the site and would not present a lower-risk and
       lower-maintenance solution

Response
Refer attached amended stormwater management plan, which reduces the extent of proposed
rapid infiltration pits, and which are now only proposed in an area near the southern-western
boundary of the site. The stormwater management plan:
    • Provides calculations which address underground and overland flows for the external
        catchment and RIP Infiltration for internal catchments