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development. An ADWF of 180 L/EP/day has therefore been adopted for the MEDLI Modelling
carried out to ascertain the required waste water disposal irrigation area.

Table 5.2 : Noosa North Shore Eco-Tourism Portal
~ ADWF and PWWF Sewage Flows

Eco-Cabins 144 0.30 1.50

Lodge Accommodation 85 0.18 0.90
interpretive Centre 10 0.02 0.10
Café 10 0.02 0.10
TOTAL 249 0.52 2.60

 

Tabie 5.3 provides an indication of the expected amount of sewage to be generated from the
proposed development.

Table 5.3 : Daily Sewage Flows

Eco-Cabins 144 25,920
Lodge Accommodation 85 15,300
Interpretive Centre 10 1800
Café 10 1860
TOTAL 249* 44,820

   

As indicated above, the proposed Sewage Package Treatment Plant will be designed for a total
capacity of 350 EP.

5.1 Proposed Sewerage System

The proposed sewerage system will be a conventional gravity system as illustrated in Figure 3.
The natural contours of the land will allow for the majority of the eastern section of the proposed
os development area to gravitate towards the proposed site for the treatment plant. There is a
smail pocket to the southeast that will require the construction of a pump station to service
approximately 24 eco-cabins. The proposed alignment of the rising main is along an existing
track that traverses the conservation area. Given the existence of this track and the minor
nature of the construction of the rising main (potential diarneter of 63/90mm at minimal depth),
the impact on the conservation area will be minimal.

The western area of the proposed development (i.e. lodge and interpretive centre) will be
serviced by a reticulation system that will gravitate towards a pump station to be located on the
north-eastern site as indicated in Figure 3. A rising main will deliver the sewage flows from this

—* area to the gravity system in the: eastern-area and eventually transport sewage through the
reticulation system to the proposed treatment plant.

A deiailed analysis will be carried out during the design phase to ascertain the required rising
main diameter. However it is envisaged at this stage that the rising main diameters will be
20mm PE for the lodge, interpretive centre pump station and 63mm PE for the south-eastern
pump station. Using polyethelene as the rising main material will ensure resistance against the
corrosive nature of the existing groundwater.

 

PETRAC LAND HOLDINGS P/L Noosa North Shore Eco-Tourism Portal September 2003
LA7296-03\Repor\FINAL REPORT - 18Sept03.doc Commercial in Contidence Page 9