Attachment C - Stormwater Management Plan - 30-32 Doonella Street_SMP-revA_full (00016826)

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4 Construction!Phase!Stormwater!Management!!
The! management! of! the! site! during! the! construction! phase! is! an! important! step! in!
ensuring! water! quality! standards! are! achieved.! ! Implementation! of! best! practice!
Erosion! and! Sediment! Control! techniques! is! imperative! to! managing! the! quality! of!
runoff!affected!by!construction!works.!!!
The! following! points! provide! general! guidance! on! the! management! of! stormwater!
during!the!construction!phase.!!In!the!absence!of!a!Noosa!Council!guideline!detailed!
Erosion! and! Sediment! Control! Management! Plans! should! be! developed! prior! to!
construction! works! commencing! in! accordance! with! Sunshine! Coast! Council’s!
Maroon!Manual!"!“Manual'for'Erosion'and'Sediment'Control”.!
    1. Establish!a!single!stabilised!entry/exit!point!for!the!site!works;!!
    2. Construct! a! shake"down! grid! at! the! entrance! to! facilitate! the! removal! of!
       sediment!from!vehicles!leaving!the!site,!which!should!comprise!a!150"200mm!
       deep!pad!of!40mm!crushed!rock;!!
    3. Install!sediment!fences!along!the!lower!boundaries!of!the!site;!
    4. Install!bins!and/or!wind"proof!litter!areas!on"site!to!minimise!the!dispersion!
       of!gross!pollutants;!!
    5. Maintain! on! site! spare! materials! necessary! for! the! emergency! repair! of! all!
       erosion! control! devices.! This! includes! silt! fences! and! clean! crushed! rock! for!
       reapplication!to!the!entrance;!!
    6. Following! each! days! construction! works,! ensure! that! any! material! on! road!
       surfaces!is!swept!from!the!road,!and!not!permitted!to!be!washed!down!the!
       gutters!and!piped!drainage!systems.!
    7. Final! establishment! of! bioretention! basin! should! not! occur! until! full!
       stabilisation! of! upstream! site! has! occurred;! preferably! these! should! be!
       temporarily!turfed!while!commercial!construction!is!occurring.!
It!shall!be!the!responsibility!of!the!developer,!through!their!principal!contractor,!to!
ensure!that!temporary!sediment!and!erosion!controls!are!installed!and!maintained!
correctly.!!
Experience!shows!that!the!critical!periods!in!the!life!of!WSUD!vegetated!stormwater!
systems!are!the!construction!and!establishment!phases.!!The!timing!and!approach!to!
these!systems!must!be!carefully!considered!to!ensure!successful!establishment!and!
long"term! performance.! ! Bioretention! systems! are! now! common! stormwater!
treatment! devices! for! new! urban! developments! in! South! East! Queensland.!!
Successful! construction! and! allowing! adequate! time! for! the! systems! to! establish! is!
critical!to!their!long"term!performance!and!function.!!Construction!of!the!system!is!
also! linked! to! having! suitable! bioretention! designs! in! place! to! ensure,! civil!
contractors!have!appropriate!plans!to!construct!to.!!Applying!due!care!in!the!design!
and! construction! phase! will! ensure! the! function! of! the! system! whilst! also! keeping!
on"going!maintenance!to!a!minimum.!It!is!highly!recommended!that!the!constructed!
activities! be! completed! in! accordance! with! the! Construction' and' Establishment'
Guidelines:'Swales,'Bioretention'Systems'and'Wetlands'(Apr'2010).!



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