Scg 20123(L1) · OPW21/0219

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