Reference Documents RAL21 0035

                                                                 Development provides an effective evacuation route that
For reconfiguring a lot, development does not compromise the     remains passable, with sufficient flood warning time, to          The flood levels have been assessed in accordance
safety of people resulting from the flood risk associated with   enable people to progressively evacuate to safe areas             with the trafficability and immunity of the
events exceeding the DFE.                                        above the PMF in the face of advancing flood or waters for        evacuation route provided by Jirrima Cr. The
                                                                 events that exceed the DFE.                                       driveway has been designed to achieve this level
                                                                                                                               Y   of access.

                                                                 OR

                                                                 AO4.2
                                                                 Development provides for an area of sufficient size and
                                                                 dimensions on site above the PMF that allows for safe
                                                                 congregation and refuge.                                      Y

                                                                 AO4.3

                                                                 Where the existing roads servicing a development provide a
                                                                 specific flood immunity (as determined by the Qld
                                                                 Transport Road and Drainage Design Manual, Queensland
                                                                 Urban Drainage Manual and the Australian Rainfall and
                                                                 Runoff Guide), all lots have access to the flood free area
                                                                 identified in Table 8.2.6.5 that matches the road immunity.
                                                                                                                               Y
PO5                                                               AO5
For reconfiguring a lot or operational works, development does
not directly, indirectly or cumulatively alter the flood          In the Flood Hazard Overlay, or in areas otherwise
characteristics external to the development site for all flooding determined to be subject to the DFE or DSTE, development
and inundation events up to and including the DFE or DSTE based ensures:
on:

1. current climate conditions; and                               1. there is no loss of on-site flood storage capacity;        Y   Flood storage is not affected

                                                                 2. all changes to level, depth, duration and velocity of          Some change to depth and velocities arise external
2. incorporating an appropriate allowance for the predicted      floodwaters are contained within the site for all flood           to the site, however the impacts are confined to
impacts of climate change.                                       events up to and including the DFE based on current               the riparian corridor and areas of biodiversity
                                                                 climate and predicted impacts of climate change at 2100;          insigificance therefore the changes do not
                                                                                                                               N   negatively impact adjacent property owners.
                                                                 3. there is no acceleration or retardation of flows, or any
                                                                 retardation in flood warning times, elsewhere on the              Flood warning times are not impacted by the
                                                                 floodplain and to any overland flow paths; and                Y   development.
                                                                                                                                   The proposal does not result in ponding to
                                                                 4. there is no increased stormwater ponding on sites              upstream or downstream properties as a result of
                                                                 upstream, downstream or in the general vicinity of the site. Y    the culvert crossing.