132938-1 Application for a minor change to a development approval (s78-PA) 2018-11-27 · 132008.1128.02

        Access / egress from Grasstree Court remains unchanged to both Lot 6 (three access points
         maintained) and Lot 9 (two access points maintained)
        The proposal now includes one consolidated basement entry / egress for the apartment buildings in
         comparison to the two originally approved
        While three access points are maintained from Grasstree Court, the car parking area towards the
         frontage of Lot 6 has been modified to ensure better manoeuvrability / operation / access-egress.
        The visitor parking associated with the ILUs which was situated throughout the internal road network
         is now to be situated in the driveway of each ILU. The driveway has been designed to a sufficient
         length to accommodate a car while not impeding pedestrian access through the internal path
         network.

  3.9 Civil Engineering
Calibre has prepared a Civil Engineering Technical Memorandum – Attachment C to confirm the
servicing requirements for the proposed development and the changes proposed from the original approval
solutions. The memorandum addresses the following engineering items:
        External Works
        Internal Works
        Stormwater Management
        Internal Services
The following information highlights the minor changes to civil engineering solutions only, for further
information refer to Attachment C.
External Works – Watermain
A water network analysis has been undertaken as it is proposed to service the development with a water
flow which can achieve 30 litres / second for the purposes of fire fighting. This water flow is consistent with
the flow demands for a site with this proposed use.
The water analysis identifies that with the construction of an additional 150mm water main along Grasstree
Court, the required water flow for fire fighting can be achieved without detrimental impact to the surrounding
water network.
Additional details and the water analysis are held at Attachment C.

Stormwater
Changes have been proposed to the stormwater management solutions for the site in response to upgrades
to standards and advice from Noosa Council. The locations of proposed stormwater devices are generally in
keeping with the approval locations however we have now undertaken further work and established more
detailed solutions. Hence we have included a new stormwater management plan for assessment.
The masterplan has been updated to reflect the proposed changes to shapes and dimensions of the
stormwater basins. The Stormwater Management Plan prepared by Calibre is held within Attachment C.
The report ensures stormwater management within the proposal will be undertaken in accordance with local
and State requirements. The report confirms the following:
        Stormwater detention for downstream flood mitigation will be deleted from the design in accordance
         with Condition 63.1 of the Decision Notice.




132938-1 | Grasstree Court, Sunrise Beach: Minor Change | 3 December 2018                                 Page 14