PR22001.PlanningReportNoosaRiverHouses.Sept2022

        8.5.2 Water
        A 300dia trunk water main exists adjacent to the southern boundary within the Gympie Tce road
        reserve. The development will use the existing main connection and will require the installation of new
        meters, undertaken in accordance with a Unitywater connection application.

        8.5.3 Electrical & Communications
        It is expected that the proposed development will gain electrical supply from the existing overhead
        network in Gympie Tce. The developer will negotiate with Energex for the installation of overhead
        equipment that may include an additional property pole within the subject site. Similarly, underground
        communications equipment exists within the Gympie Tce verge and the developer will negotiate with
        Telstra/NBN to identify connection capability and any upgrades or network extensions that may be
        required.



8.6 Stormwater
The development does not propose to significantly alter the existing site drainage arrangements.

The proposed development does not increase impervious areas from that of the previous developed site and
is therefore not expected to generate an increase in peak flows. The site is serviced by kerb and channel and
an underground stormwater network in close proximity to the site. Roof catchments and surface runoff will
report to an internal network of pipes discharging to kerb and channel in Gympie Tce. A small portion of the
site will discharge to the rear as surface runoff but this will be minimal. Both scenarios offer a lawful point of
discharge.

It is not considered that on site detention or treatment of stormwater be a requirement. Please refer to the
Engineering Report provided as Attachment F addressing site stormwater quantity, quality and reuse in further
detail.




8.7 Flood Immunity
Council flood modelling indicates that the site is subject to inundation in a range of flood events. A Council
Flood Search has been undertaken and determines that Defined Flood Level is 2.4m AHD across the site.
The Applicable Minimum Floor level is therefore 2.7m AHD to achieve the minimum 300mm freeboard
requirement, to which the development has been designed.

The basement immunity has been provided via provision of a Flow Defence Flood barrier system located within
the property boundary. This type of passive system is a self-activating flood barrier that utilises a float within
a channel/chamber that is installed below ground level, hence is low maintenance with no need for electrical
or manual operation. Use of the flood barrier solution enables driveway and ramp grades to be both logical
and user friendly for both residents and visitors. The consultant team investigated provision of immunity via
basement bunding however ramp grades, visibility of basement entry severely compromised the useability for
residents.
Further details in respect of the proposed flood gate barrier are provided on Sheet SD4.6 – Proposed Flood
Water Barrier included within the Architectural Plans provided as Attachment C to this submission. The barrier
Noosa River Houses | September 2022




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