Crossover application - 12 Grosvenor Tce, Noosa Heads · OPW21/0219

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                                 ENGINEERS
  16 September 2020
  SCG Ref: 20123(L1)

  By email: [email protected]


  Jason Young



  Dear Jason

                             Re: As Constructed Driveway ~ 12 Grosvenor Terrace. Noosa Heads


  We have reviewed your ‘As Constructed’ driveway at the above property including the finished surveyed levels
  that you have provided. We have also reviewed the original Civil Engineering design drawing for the Grosvenor
  Terrace road formation by Tate Engineering, (DRG No. C1636/04/RSL/R2 RevC).

  From this original drawing, it can be seen that a swale formation was to provide drainage for the road formation
  along the western side of Grosvenor Terrace draining towards a catch drain that fronted #4 and #6 Grosvenor
  Terrace.

  We are aware that this drainage infrastructure was ineffective given our involvement in the construction of #4 and
  #8 Grosvenor Terrace. We are aware that Council has since constructed a new catch drain at the edge of the
  road formation fronting #8 Grosvenor Terrace. This has changed the drainage characteristics of this section of
  Grosvenor Terrace effectively voiding the swale formation and now capturing surface flows that travel along the
  edge of the bitumen.

  Furthermore, a number of properties along this stretch of Grosvenor Terrace have neglected the existence of this
  swale by filling or levelling within the road verge between their front property boundaries and the edge of the
  bitumen. This has created a new drainage path for the road formation along the edge of bitumen on the western
  side of the road.

  With this considered and the ‘As Constructed’ information you have supplied for your driveway we are satisfied
  the ‘As Constructed’ will effectively drain towards the edge of the bitumen fronting your allotment, allowing sheet
  flow from the road to drain towards the new catch pit constructed by Council.

  We are of the opinion that the neighbouring property to your south (#14) can easily create similar fall from the
  front boundary down to the edge of bitumen in the road verge and their constructed driveway. This will create
  effective drainage and will be consistent with several other properties along the street.

  Yours faithfully



        /
  SEAN RICHARDSON - RPEQ 5835
  For and on behalf of
  SCG CONSULTING ENGINEERS



p: 07 5455 5604
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P0 Box 1661 Noosa Heads Old 4567
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