Appendix D - Effluent Disposal System

                                                                                                   QBCC: 15336345 ABN: 35 622 809 376




    7. DESIGN RECOMMENDATIONS
    Water conservation implementation will reduce the hydraulic load on the Land Application Facility and
    subsequently improve its performance and serviceable life.
    Effluent quality from the treatment plant must comply with the criteria presented in the Plumbing and
    Drainage Act, Queensland Plumbing and Wastewater Code and AS/NZS 1547-2012 On-Site Domestic
    wastewater Management and be confirmed with the regulatory authority.


    8. INSTALLATION NOTES
    All installation works, components and fittings must comply with AS/NZS 3500, AS/NZS 1547-2012 On-Site
    Domestic Wastewater Management, Plumbing and Drainage Act, Queensland Plumbing and Wastewater
    code, the EPA, Health Act, The Integrated Planning Act and Local Authority.
    Land Application Facilities and treatment systems/service plants (wastewater treatment unit and disposal
    areas) must be located with good and clear access for servicing and maintenance requirements.
    The exiting ground proposed for use as the Land Application Area shall be lightly scarified along the contour
    to a maximum depth of 200mm prior to the construction and/or installation of the land Application Area.
    Care should be taken with the layout and construction of supply line trenching/pipe work, as with all
    drainage, plumbing and electrical trenches to inhibit surface water infiltration along and into the Land
    Application Area. All supply line excavations and trenching shall be backfilled with interceptors.
    Correct pipe layout and Land Application Area construction/installation is an essential part of our
    recommendations and design. If the site is not prepared in accordance with our design, or is prepared
    inadequately or is prepared poorly, inefficiencies may occur and we do not take responsibility for the
    consequences in such cases and we will make an additional charge if as a result, more testing, re-designing
    or re-writing of the report is necessary.
    All irrigation areas are to have bunded walls for retention to the perimeter of the designated area.



    THE LAND APPLICATION AREA SHALL:
            not be located on land prone to water logging or subject to floodwater inundation
            be sited to be open to prevailing winds and not totally shaded from sunlight
            be protected from roof water discharge, surface water flow and/or seepage
            have no runoff or seepage of the applied effluent beyond the designated area
            be regularly inspected and maintained
            have the mandatory signage prominently displayed
            have boundaries clearly delineated.

    It is essential that all associated storm water flows from this and neighboring allotments, driveways, roads,
    tanks and roofs be diverted away and well clear of the proposed Land Application Area.
    Enviro Water Design requires an inspection for certification to be carried out prior to commissioning, and
    preferable during construction, to ensure code compliance and that ‘Best practice’ principles have been
    utilized.




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