Engineering Response

                                                                            Our Ref: WCD-22936

5 August 2022

Noosa Shire Council
Development Services
PO Box 141 Tewantin QLD 4565


Attention:        Lisa Pienaar

                  Re: MCU21/0190 – Information Request
                  Development at 65 & 67 Elanda Street, Sunshine Beach QLD 4567


Dear Lisa,

In response to council’s Information Request dated 3rd February 2022, please find information
below which will form the response to items mentioned in the notice.

Issue - stormwater

The provided stormwater design has part of the runoff being discharged to Elanda Street from
on-site detention tanks but it is not clear how this will work (the site is lower than the road). As
Council does not support the use of pumps in this situation clarification is required as to how
the discharge will be achieved.

Please find attached revised stormwater plans. The proposed stormwater layout been
amended to ensure that the property has a LPOD.

Advice required

9. In relation to stormwater and lawful point of discharge, a revised analysis is requested which
examines the impacts of the development at each point of discharge from the site. The current
assessment appears to consider the site, however in the developed case the site will discharge
sheet flows to the downstream properties and concentrated flows to Elanda St. The impacts of
each discharge location need to be considered. As no discharge currently flows to Elanda St in
the existing case, the impact to Elanda St will need to consider the capacity of the drainage
system within Elanda St and what upgrades may be required to accommodate flows from the
site.

Please see attached amended SWMP with revised stormwater layout. This layout now provides
new council stormwater infrastructure which provides the site with a LPOD which is consistent
with the existing case.


We trust that the above and enclosed information satisfactorily fulfils council’s requirements
in relation to the above-mentioned information request. We look forward to receiving
development approval at your earliest convenience.