220508-R001(B) Engineering and Services Report (OPW) · OPW23/0179

                                                  7


5.0 FLOOD IMMUNITY

5.1     Flood Water Protection
Flood immunity is consistent with the MCU approval and is provided by a continuous
bund/impervious walls extending to RL 2.400, being the Defined flood Event as per relevant Council
Flood Search information which can be found in Appendix E. The driveway access across the
western boundary rises to RL = 2.400m before ramping down to the basement. The extents of the
bund/walls is shown in the Engineering Drawings. Non-return devices are included on all
stormwater outlet pipes to prevent ingress of flood water during an event.



6.0 STORMWATER AND DRAINAGE

6.1     Lawful Point of Discharge
The development does not propose to significantly alter the existing site drainage arrangements.
Roof catchments and surface runoff will report to an internal network of pipes discharging to kerb
and channel in Gympie Tce. A small portion of the site will discharge to the rear as surface runoff
but this will be minimal. Both scenarios offer a lawful point of discharge. The Operational Works
outcomes are consistent with the MCU approval.

6.2     Stormwater Drainage System
The proposed stormwater drainage system is in accordance with the requirements of Condition 31
of the MCU approval and is as per the previous engineering design and information provided to
Council during the MCU approval process.



7.0 CONCLUSION

Based on all the information available it is considered that the proposed Operational Works
associated with the Dual Occupancy development at 128 Gympie Tce Noosaville can be readily
undertaken with no significant engineering constraints. The proposal achieves general compliance
with The Noosa Plan 2020 and other relevant standards and codes and is recommended for approval
accordingly.