Reference Document - RAL23/0013.02 - Part 2 (As Published)

                                                        Existing 1% AEP flood level


                                                                                     Area of shallow cut to offset
                                                                                     loss of floodplain storage.




   Fill – earthworks to augment the
   capacity of the existing basin
                                                     Fill at lot 8 building platform




Figure 2-3: Proposed cut / fill areas and extent of 1% AEP (CC) flood level



2.2.7.       Flood Immunity
The NSC Planning Scheme identifies the Defined Flood Event, from which freeboard is set is the 1% (2100)
AEP flood event. Flood levels around the site for the 1% (2100) AEP are detailed for various reporting
locations as shown in Figure 2-4. This shows the proposed new lots are above the 1% (2100) AEP peak flood
levels. The peak flood level, minimum finished flood level and proposed lot level is shown in Table 2-12. It
is seen that greater than 500mm freeboard is provided to lot. It is recommended that future buildings on
each lot achieve a minimum of 500mm freeboard above the regional 1% (2100) AEP flood level.

Table 2-12: Lot Levels Compared to Adjacent 1% AEP Peak Flood Levels
    Lot         1% AEP Peak Flood              Minimum Freeboard              Min Finished Floor      Proposed Min Lot
                  Level (m AHD)                    to Floor (m)                Level (m AHD)            Level (m AHD)
     8                83.44                             0.5                         83.94                  87.61*


 *Reported level is min lot level within the proposed building footprint area




23-0167SMP01-V3 | Stormwater Management Plan | 33 Pavilion Street, Pomona                                            Page 27