Reference Document - Site and Soil Evaluation MCU24/0061

             Preparation of irrigation area:

             When a proposed irrigation area has a low permeability, it is particularly important to ensure that the permeability
             of the soil in the irrigation area is improved and maintained and that there is an adequate cover of porous and
             fertile topsoil to act as immediate storage of effluent applied to it, and to support rapid growth of vegetation on the
             area to maximise evapo-transpiration.

             It is recommended that topsoil be imported to improve rapid growth of vegetation and improve the evapo-
             transpiration process.

             Requirements of irrigation system:

             All irrigation pipe work and fittings shall comply with all parts of AS 1477 or AS 2698.2. The distribution irrigation
             lines should be buried to a minimum depth of 100mm. There shall be no cross connection between any irrigation
             pipe work and the potable water supply. Any pipe work used for the transport of effluent included treated effluent
             must be lilac in colour.

             Along the boundary of the surface irrigation area there shall be at least two warning signs clearly visible to inform
             the occupants of the premises that recycled water is used for irrigation. Each sign shall comply with AS 1319 and
             have:

                   (a)    lettering visible at 3m and
                   (b)    wording:              Recycled Water
                                                Avoid Contact
                                                DO NOT DRINK

             Prior to the use of the system, the warning signs and the landscaping and surface preparation must be completed.


             Sighting of the Land Application Area:

             The current Code of Practice for On-site Sewerage Facilities (Queensland Plumbing and Wastewater Code) provides
             minimum horizontal/vertical separation distances for Land Application Areas. They are as follows;

                          Sub-Surface Land Application Areas (ADVANCED SECONDARY)
                          Property Boundaries Upslope from the Area      -     2.0m
                          Property Boundaries Downslope from the Area    -     4.0m
                          Dwellings or buildings                         -     4.0m
                          In ground swimming Pools                       -     6.0m
                          In-ground potable Water Tanks                  -     6.0m
                          Dams, Watercourses or Bores                    -    10.0m
                          Vertical distance to water table               -     0.6m
                          Driveway                                       -     2.0m                      (Upslope);
                                                                               4.0m                      (Downslope)
                          Footpath                                       -     1.0m                      (Upslope);
                                                                               2.0m                      (Downslope)

             NOTE:- REFER TO QUEENSLAND PLUMBING AND WASTEWATER CODE FOR SITING OF ON
                    SITE SEWERAGE FACILITY FOR LOCATION OF TREATMENT PLANT. TREATMENT
                    PLANT MUST BE 150mm ABOVE Q100 FLOOD LEVEL.

             In no instance shall Effluent be used for irrigation of fruit or vegetables.
             No Vehicle loading or children’s recreational areas to be applied or constructed within the Land
             Application Area.




                    AUSTRALIAN SOIL INVESTIGATIONS
Document Set ID: 23014195                                                   5                           ASI Ref: 220004(A)Rev-A
Version: 1, Version Date: 13/05/2024