Attachment 3 - Revised Engineering Report (rec. 7.04.2025) MCU24-0165 & OPW24-0222

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FIGURE 6: SCHOOL STREET GRASS VERGE, EAST OF THE SUBJECT SITE LOOKING WEST TO POMONA
CONNECTION ROAD

5.3      Lawful Point of Discharge
The existing lawful point of discharge is the southern boundary of the lot where runoff water exits the
lot as sheet flow into 22 Rifle Street. It is proposed that this lawful point of discharge is maintained post
development which is compliant with Section 3.9.1 requirements of QUDM. Pipe flows are proposed
direct to the drainage channel in Rifle Street with surface flows beyond the minor storm discharging to
22 Rifle Street conservation lot.

5.4      Flooding
The site is not identified to be impacted by flooding inundation event as per NSC Flood Hazard Overlay
Mapping as shown in Figure 7. Whilst the subject lot is not identified to be affected by the flood extents,
consideration of the surrounding flood conditions has been made as the adjacent lot to the south is
shown to be inundated during flood events. A flood search certificate was obtained which indicated that
the Defined Flood Event being the 1% AEP Climate Change flood level is 90.3m AHD. The building
levels have been designed to be above this minimum FFL (DFE +0.3m Freeboard).




 15 November 2024                                                                                             Page 8