Site and Soil Evaluation · MCU18/0084

           Test Site:                        1                 2                    3
         Soil Category                       5                 5                    5
           Structure                     Moderate          Moderate             Moderate
    Indicative Permeability              0.06-0.12         0.06-0.12            0.06-0.12
              DIR                           20                20                   20


Recommendations:

Based upon our Site and Soil Assessments we recommend the following method of On-Site Effluent Disposal should
be used.

For the treatment of the Effluent we recommend;


       Advanced Secondary WasteWater Treatment System (AWTS)
(NOTE: The system chosen must satisfy both the Queensland Plumbing and Wastewater Code and AS1547-2000
On-Site Domestic Waste Water Code and be approved for use by the Local Shire/Council governing the allotment.)


For the disposal of the treated effluent within the Land Application Area we recommend;

       A Pressurised Surface Reticulated Irrigation System
(NOTE: Where Surface irrigation is used in conjunction with an Aerobic Sand Filtration System the treated effluent
shall be disinfected with chlorine prior to dosing of the Land Application Area.)

The size of the Land Application Area is calculated as follows:
  Minimum requirement   q         115        litres per person per day   AS 1547 –2000 Appendix 4.2D

      Water Supply               Tank water

  Number of persons =               20                                       AS 1547 Table 4.3A3


      Total Volume          Q=     16100       mm/week

      Soil Category                  5                                       AS 1547 Table 4.2A4

  Indicative permeability        0.06-0.12                                   AS 1547 Table 4.2A4

           DIR                      20         mm/day                        AS 1547 Table 4.2A4

      Disposal Area         A=      805        m2


WE RECOMMEND THAT A MINIMUM LAND APPLICATION AREA OF 805m2 BE PROVIDED.
It is recommended to divide the disposal area into two separate areas of 403m2 .
A check of Water Balance requirements in accordance with the Code has been undertaken and have
been found to comply.

The Irrigation System should be designed in accordance with AS 1547 – 2000 and comply with all relevant
statutory requirements.

Construction Guidelines for Land Application Areas:

Surface I rrigation

Consists of a reticulated pressurised irrigation system that uses a series of surface sprinklers to equally distribute
the treated effluent across the Land Application Area. This system allows vegetation within the area to directly



   AUSTRALIAN SOIL INVESTIGATIONS                                 4                                ASI Ref: 180061(A)