Reference Documents - MCU23-0142

and beyond construction. All constructed retaining walls must have effective drainage measures upslope
and beyond the walls to relieve any sub-surface water pressure/build-up. These drains must be
maintained and flushed out regularly. To achieve this we recommend bringing the upstream end of the
drain to surface and capping off to allow future flush out.



6.4      Climate Change Consideration for Year 2100

To consider the impacts of climate change a 20% increase in rainfall intensity was adopted for the year
2100. All stormwater infrastructure is to be designed with a rainfall multiplier of 1.2 in accordance with
the design storms mentioned above.



7.0      FLOODING
The Noosa Council Flood Search Certificate (Appendix E) confirms a defined flood event of 2.5m AHD.
The proposed development will include a minimum floor level of 2.8m AHD to allow for 300mm
freeboard as required by the Noosa Plan 2020.




 SCG Consulting engineers                            16                      SCG Ref: 33094(SWM).Rev A