2014022_71_SeaviewTce_SWMP-revC_full · OPW16/0021

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1 Introduction!
This!manual!outlines!the!ongoing!maintenance!and!operational!requirements!for!the!
stormwater! quality! improvement! devices! to! be! implemented! at! the! residential!
development! for! 71! Seaview! Terrace,! Sunshine! Beach.! ! This! document! details! the!
types!of!devices!that!have!been!installed,!their!locality!and!associated!maintenance!
checklist!and!scheduling!to!ensure!they!continue!to!function!as!intended.!
The! water! quality! improvement! devices! implemented! on! this! site! include! a!
bioretention! basin! that! acts! to! effectively! achieve! the! required! water! quality!
objectives.!!Vegetated!assets!such!as!bioretention!can!reduce!the!potential!impacts!
of! urban! stormwater! on! the! water! quality! of! the! receiving! environment! provided!
they! are! well! planned,! designed! and! constructed.! ! However,! they! also! require!
maintenance!to!function!effectively!and!to!continue!to!meet!the!designed!outcomes.!!
The!implications!of!not!maintaining!vegetated!stormwater!assets!include:!
    •   Assets! fail! to! manage! stormwater! quality,! which! can! result! in! negative!
        ecological! impacts! in! downstream! water! bodies! and! pose! liability! issues! for!
        the!asset!owner;!
    •   Poor!amenity;!
    •   Health!and!safety!problems,!such!as!mosquitoes!or!offensive!odours;!
    •   The!cost!of!returning!the!asset!to!a!functional!state!(i.e.!rectifying!the!asset)!
        can!often!be!substantially!more!than!the!cost!of!routine!maintenance;!
    •   The!value!of!the!asset!is!reduced.!
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