000A88A4.116.tif · 132003.221037

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Tne proposed sewerage system is to be a conventional! gravity system. The natural contours of
the land allow for the majority of the East Visitor Precinct area to gravitate towards the proposed
site for the sewage treatment plant. There is a land area that will require the construction of a
pump station to service approximately 24 eco-cabins.

The West Visitor Precinct is to be serviced by a reticulation system that will gravitate towards a
pump station to be located in the north-eastern area of the precinct. A rising main wif convey
the sewage flows from the pump station to the gravity system in the East Visitor Precinct and
through the reticulation system to the proposed sewage treatment plant.

During the detailed design phase priority will be placed on designing a system that minimises
consiruction impact. The depth and grade of the proposed sewer system will be kept at a
minimum to ensure that proposed trenching works are conducted in a manner that minimises
impact.

Any sewerage infrastructure will be designed in accordance with Noosa Council standards and
guidelines.

The proposed sewage treatment plant will be sized to ensure that it can process the expected
sewage loading and sewage generation variations that are expected within a development of
this type. The plant will have a capacity of 350 equivalent persons (EPs). This treatment
capacity would adequately meet the expected sewage loading as weil as providing additional
capacity to provide a margin of safety. The proposed sewage treatment plant infrastructure and
operation will treat and dispose of human waste products in a sustainable manner whilst reusing
the water resource in a manner that does not significantly impact on the land’s existing
environmental values.

The effluent irrigation area and storage volume requirements for treated water disposal were
determined using approved MEDLI modelling techniques. The results of this modelling exercise
indicated a sustainable irrigation area requirement of 6.5 ha. Based on this result, irrigation
areas that meet the nominated size requirement were selected. A detailed analysis will be
carried out during the detailed design phase to specifically determine final irrigation areas and
define parameters for an effluent irrigation management plan.

Water Supply Infrastructure

The remote location of the proposed Noosa North Shore Eco-Tourism Portal required the
development of an innovative water supply system to service the expected population whilst
fulfilling the environmental goals of the proposed Noosa North Shore Eco-Tourism Portal.

The proposed water supply system is to combine rainwater harvesting (primary) and
groundwater extraction (secondary).

A water supply analysis has demonstrated that rainwater harvesting and storage will be able to
supply the Visitor Precincts with potable water at most times, other than over extended dry
periods. When specifically required, treated groundwater will be used to supplement potable
water supply. , oor

An optimal combination of rainwater and groundwater supply wil! be devised through the
development of a dynamic water network analysis model. This analysis will ensure that the
maximum potential yield from rainwater is achieved, thereby minimising the impact/dependency
on groundwater extraction.

 

PETRAC LAND HOLDINGS P/L Noosa North Shore Eco-Tourism Portal September 2003
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