08/1128 - Response to Information Request [As Published] · 132008.1128

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25. The term “Residential Unit Dwellings” refers to independent living
units, apartments and serviced apartments.

The Queensland Development Code requires at least 3000L for a Class 1
building other than a detached Class 1 building. Based on 129 dwelling units
including the independent living units, apartments and serviced apartments,
387 kL storage would be required.

The Residential Aged Care facility has a roof area of 3768 m?*, Based on the
QDC storage requirement of 15 Lim? roof area, this equates to 55kL.

A total storage capacity of 387 + 55 = 442m? is required to comply with the
Qoc.

The re-use demand for the proposed development was determined as
follows:

e¢ Maximum Hour (MH) potable water demand (Noosa Planning Scheme
Policy 6) = 3.3 L/sec/ha.

« Assume 80% site area developed = 4.676 x 0.8 = 3.74 ha.
« MH potable demand = 12.34 L/s.

e Assume MH peaking factor = 4.5 x Average Day demand (in accordance
with the Natural Resources and Water Planning Guidelines for Water
Supply and Sewerage), thus AD = 2.74 L/s.

« Based on 20% toilet consumption, 15% laundry consumption, and a 5
kLUday allowance for external use, the adopted re-use demand was 88
kLiday.

« Based on rainfall data for the 10 year period, from 1989 to 1998, the
adopted re-use demand would provide a 37% potable demand reduction
with 95.6% reliability.

26. Please refer to above response demonstrating compliance with QDC.
Earthworks

27. Detailed design of batters and banks will be undertaken as part of the
Operational Works application. Primary retaining has been identified on the
master plans and Site Cross Section no. DA_LADD 44 by smithttracey
architects. This plan shows typical cut and fill requirements to achieve the
requisite 1:20 gradients.

Stormwater Modelling

28. Nambour rainfall and precipitation data was used only for water

quality modelling. Stormwater quantity modelling undertaken based on site-
specific Noosa IFD data.

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