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phase. The effluent will be pumped to this tank via a pump station to be located within the
proposed treatment plant compound. frrigation can then be carried out by gravity means to the
nighlighted areas in Figure 4. A further storage holding tank will be constructed within the
compound and will hold five (5) days of ADWF storage (as specified in the overview EMP).

A main will be built to deliver effluent for irrigation purposes for the landscape gardens of the
proposed lodge and interpretive centre area. In addition to irrigation, this effluent will also be
used for flushing of the toilet fixtures to be installed in the lodge, café and interpretive centre
facilities. This strategy will reduce the water demand and will assist in the overall water
managemeni cycle of the Noosa North Shore Eco-Tourism Portal.

It is proposed that an Irrigation Management Plan will be developed during the detailed design
phase to meet any requirements that Noosa Council or the Environmental Protection Agency
may request. The size of the irrigation areas has been determined from the evaluation of the
results of a MEDLI Model that was prepared for this proposed development. This MEDLI Model
is further discussed in section 4.3.

As required by the National Water Quality Management Strategy “Guidelines for Sewerage

co Systems — Use of Reclaimed Water, and as detailed in the EMP, a program will be developed
and implemented to monitor effluent, surface and groundwater water quality to ensure the
environmental values of the land and surrounding land are protecied.

Treated effluent water will be tested at the nominated frequency for the quality of contaminants
as defined within Table 3 of the “Guidelines for the Use of Reclaimed Water in Queensland” for
Urban (Non-Potable) Class. The measurement parameters are to include, but not be limited to:

continuous monitoring of turbidity,

daily monitoring of any disinfection system,

weekly monitoring of pH and biochemical oxygen demand; and
monthly monitoring of thermotolerant coliforms.

6 @ @ @

The treatment plant will be designed with a monitoring system that will automatically, and at the
frequency required, extract and test those parameters defined above. This automatic testing will
exclude BOD testing, which will need to be conducted away from the plant.

5.2.1 Proposed SPTP Process Description

Set out below is a summary of the process description for the type of package plant that is
proposed for this development.

Primary Treatment
Ail sewage from the sewerage system enters the first of two (2) Primary tanks.

The use of two Primary tanks, operated in series, ensures adequate treatment time and helps
~- 4 dampen flow variations to subsequent-treatment units.

The Primary tanks provide three separate functions:

1. Solid-Liquid Separation — Incoming solid matter present in the sewage is separated from
the waste water through gravity settling and flotation. Solids that settle to the base of the
tanks are referred to as a sludge layer. Solids that float to the top of the tanks are referred
to as the scum layer.

 

PETRAC LAND HOLDINGS P/L Noosa North Shore Eco-Tourism Portal September 2003
L.\7296-03\Reporf\FINAL REPORT - 18Sept03.dac Commercial in Confidence Page 11