07/1413 - Response to Information Request [As Published] · 132007.1413

Design Calculation

The serviceable life of the Land Application Areas will be compromised if the design flow is exceeded. The
Wastewater Treatment System will be compromised if the design flow rate is exceeded. For our calculations we

have assessed the design flow as follows:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Design Calculation
DIR (mm/week) (secondary quality effluent) 20
Hydraulic load (It/day/person) Tank Water / 10 Bedrooms. 115
Design Flow Q (It/day) EP: 15 At 100% occupancy for holiday cottages 1725
Design sizing calculation Ai =(Qx7)/DIR
= (1725 x 7)/20
Disposal area A (square meters) 605m2
Nominated Configuration (meters) Determined by Installer
Treatment Plant Minimum Size Requirement 15 EP
Recommended Separations Distances - Surface Irrigation pecondary nenanced Secondary
Dwellings & recreation areas 15m 10m
Water edge of swimming pools 6m 6m
Property boundaries, paths & walkways am uphill hill am AN hil
Top of bank of permanent water course, creek, lake, waterway etc. 30m 10m
Bore or Dam for domestic or stock use 30m 10m
Vertical depth of seasonal water table 0.6m 0.3m
In ground potable water tank. Note some authorities require 15m 6m 6m
Sub-Surface Irrigation same as above except for;
Dwelling & recreation areas 4m 4m

 

 

 

NOTE: The local government authority may upon considering the public health and environmental risks

reduce or increase the distances in the above table.

Regards,

  

Lance Picton jp.
EcoCycle Pty. Ltd.

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