000A88A4.11E.tif · 132003.221037

< Cerdno
MBK
There are also 3 eco-cabins that will be serviced via individual pumps delivering sewage flow to
the proposed gravity system. This is required as a gravity feed cannot be achieved due to the
location of the eco-cabins. This requirement will be confirmed during the detailed design stage.
During the detail design phase priority will be placed on designing a system that has minimal
impact during the construction phase. Depths and grades of the proposed sewer system will be

kept at a minimum in all possible areas to ensure that trenching works do not impact on the
surrounding environment.

 

The pump stations will be designed in accordance to Noosa Council standards and guidelines.
lt should be noted that emphasis during the design phase will be placed on:

minimising visual impact of pump station(s);

location of pump station;

adoption of adequate odour control measures {ie wet well washers); and

adequate sizing of pump and wet well to ensure appropriate operation of the pump
thereby ensuring low retention times in the well.

e@ 68 © @

The maierial recommended for the reticulation system is uPVC which, given its chemical
— resistance capabilities, will ensure long term asset life.

5.2 Sewage Package Treatment Plant

The proposed Noosa North Shore Eco-Tourism Portal will be serviced by a purpose built
package sewage treatment plant (SPTP). This plant will be sized accordingly to ensure that it is
able to process the expected sewage loading and sewage generation variations that are
expected within a development of this type. At this stage it is envisaged that the plant will have
a capacity of 350 EPs. This would adequately handle the expected sewage loading from the
proposed development as well as providing some additional capacity. The SPTP 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 plant will be designed for the tertiary treatment of sewage. The effluent of this proposed
SPTP will comply with Class A “municipal with uncontrolled public access” type of re-use, which
includes irrigation of open spaces and flushing of toilet fixtures (as detailed in the EMP and as
specified in the National Water Quality Management Strategy “Guidelines for Sewerage
Systems — Use of Reclaimed Water’).

A licence from the Environmental Protection Agency for Environmentally Relevant Activity 15(b)
will be sought for the construction and operation of the proposed SPTP.

The type of effluent re-use that is proposed includes irrigation of areas highlighted in Figure 4
and also flushing of toilet fixtures in the lodge and interpretive centre. In addition it is proposed
that the treatment plant will be designed to include nutrient removal and achieve a level of 10
mg/L for nitrogen and 2 mg/L phosphorous.

--. =s All land disposal of treated effluent water.will be carried out in a controlled manner to ensure
that there is:

e ne significant impact of effluent disposal on eco-system dynamics;
e no contamination of groundwater; and
@ no animal health risk from exposure to treated water.

All irrigation works will be undertaken using a trickle filter system. It is proposed that an effluent
storage tank (above ground) be constructed adjacent to the watch tower in the East Visitor
Precinct as shown in Figure 3. This tank will be sized accordingly during the detailed design

 

PETRAC LAND HOLDINGS P/L Noosa North Shore Eco-Tourism Portal September 2003
LA?296-03\ReportiFINAL REPORT - 18Sept03.doc Commercial in Confidence Page 10