132006.268.03 - Amended Court Approval - Attachment 2

D> future-plus
ENVIRONMENTAL

4377-131119-1.0

 

4.0 RECOMMENDATIONS

4.1 EFFLUENT DISPOSAL
It is recommended that the application of effluent on-site via surface irrigation be adopted.

Contained in Figure 3 of this report is the proposed location of the effluent application areas

and the irrigation system design detail.

Assuming a hydraulic loading of 1,410 litres per day and a DIR of 15mm/week based on
Table 4.2 A4 of AS1547:2000 (Category 6 soils), a minimum application area of 658m? is

required.

Table 4: Minimum Required Irrigation Area

Irrigation Area
PSS EL versie To) || as Determined
Category by Table
CPO Seen

Subject Site Slope

Lot 2 SP143409 Soil Category 6

 

 

Based on the Table above and presence of Category 4-5 soils to 700mm, an effluent irrigation
area of 625m? is required for the site. A typical design detail of the irrigation system is shown

in Figure 4.

It is noted that the site has sufficient space available for a 100% reserve area and is shown in

Figure 4.

The application area shall be installed in accordance with the following:
1) All plumbing and drainage work is to be carried out by licensed persons and strictly in
accordance with the AS/NZ 3500:2003, AS/NZS 1547:2000 and Plumbing and Drainage
Act 2002;
2) Lilac stripe poly pipe is to be buried a minimum of 150mm below ground level from the
treatment plant to the irrigation area;
3) Sprinklers are to be used to irrigate the treated effluent within the designated area after

150mm of mulch or turf has been applied;

 

February 2014 Site & Soil Evaluation Report 10
Wastewater Treatment and Effluent Disposal
314 Cooroy Mountain Road, Cooroy Mountain

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