Swmp

10% AEP catchment flows in addition to the existing catchment whilst maintaining a 4m wide flood-
free trafficable lane on Eumundi Noosa Rd.




7.0      FLOODING


Information provided from Noosa Council’s Flood Hazard Overlay Map confirms the site is unaffected
by flooding.




8.0      CONCULSION


The stormwater management report demonstrates under the detailed plans the proposed residential
development at , Lots 1, 2 & 3 on SP208257, 79-83 Eumundi Noosa Rd & 26 Headland Dr, Noosaville
meets the quantity and quality stormwater requirements as described in this report.

Sediment generated during the construction phase is to be dealt with in accordance with a Silt and
Sediment Control plan and is to be kept on-site throughout construction.

The proposed development triggers the State Planning Policy 2017 stormwater quality treatment
objectives. An on-site bio-retention basin, grassed swales and a water storage tank for re-use has been
incorporated into the proposed development to meet the prescribed water quality objectives, prior to
discharging to the lawful point of discharge.

On-site detention has been provided to maintain existing peak flow rates and to ensure a non-worsening
to flooding of downstream properties. On-site detention is proposed to be contained within the bio
retention basin and the designed to contain all flows up to a Q100 storm event. The existing stormwater
infrastructure is capable of conveying the post development mitigated flow paths for all storms up to a
Q100.

The subject site is not affected by localised flooding.




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




SCG Consulting Engineers                   Page 22                               SCG Ref: 33132(SWMP)