Stormwater Management Plan

3.0    PROPOSED DEVELOPMENT

The proposed development consists of multi storey hotel buildings and villas
with basement carparking underneath and all buildings to be surrounded by
extensive terraced landscape areas, both hard and soft.

         vehicular entry to basements will be from Banksia Avenue while
service vehicles will access back of house areas via the cul-de-sac bowl at the
end of Serenity Close.

The existing concrete footpath at the eastern end of Serenity Close will be
extended westwards in order to provide street access for proposed villas and
requiring a length of existing concrete edge restraint and grassed swale to be
decommissioned to make way for kerb and channel and footpath. Existing
landscaping within the road reserve will be largely preserved in these areas.




4.0    STORMWATER TREATMENT & DISPOSAL OVERVIEW

Treatment and disposal of runoff will be carried out in accordance with the
approved document Settlers Cove Noosa Residential High Density Environmental
Management Plan (EMP 1) by WBM Oceanics Australia.

Alta Projects Engineers (formally TATE) were involved in formulation of the
overarching development approval document and EMP1 produced by WBM
Oceanics.

EMP1 recognises in particular the regimes of stormwater runoff and
infiltration which existed over the broader RHD site pre-development.

Essentially it was recognised that the RHD site lies atop a dune of poorly
graded sand with particularly high rainfall infiltration rates. As such the
natural state sees all rainfall for events up to 100 year ARI infiltrate the dune
close to where it lands and replenish the water table below with little or no
runoff.

The standing water table forms a profile similar to the shape of the dune,
albeit at a depressed scale and emerges as seepage flows adjacent Noosa inlet
at or about RL 5.0m.




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A6769/22/SWMP/RevA      October 2022                                         Page 2 of 6
SH/PL
                         Brah101 Pty Ltd t/as ALTA PROJECTS