Further Council Report MCU21-0110.pdf

               Adjacent to the existing car parking area and tennis courts is a line of disturbed vegetation
               containing a range of native canopy species with a low coverage of ground covers with areas
               containing a range of exotic and native amenity shrubs.
               The bushfire assessment found that the risk associated with bushfire was from outside the
               proposed development area i.e. Girraween Nature Reserve to the north and east. Resort Drive
               forms a natural firebreak that would be sufficient to buffer most ground fires, however a significant
               bushfire involving Girraween Nature Reserve on a high fire danger day with an easterly wind has
               the potential to cross Resort Drive and involve the vegetation within the subject site.
               The report determined that a fire within the site, particularly involving the vegetation associated
               with the northern and eastern boundary would be of low intensity and burn up the dominant slope
               away from any of the existing infrastructure.
               In response to the bushfire risk, the proposal has included a range of mitigation measures along
               the northern and eastern boundary to reduce risk to people and property. This includes separation
               distance from mapped hazardous vegetation that achieves a radiant heat flux of less than
               29kW/m2. To achieve this outcome the development footprint along the northern and north-eastern
               boundary must meet a minimum separation of 15.7 metres.
               The below image, which is taken from the applicant’s BHA, indicates that Pavilion 5 achieves
               24.465 metres and 21.965 metres at the ends of the building closest to the hazardous vegetation




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               which will achieve a radiant heat flux with 19-29kW/m2.




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                                        Figure 11: Proximity of pavilion 5 to hazardous vegetation

               The building is separated from the northern hazardous vegetation via the proposed overflow
               carpark which is approximately 35 metres in length. 35 metres will achieve a radiant heat flux of
               12.5kW/m2.
               The BHA has provided a range of comments and recommendations to reduce risk on the
               infrastructure and users within the site. These include:
               •      Hazardous vegetation retained in proximity to the development is separated by Resort
                      Drive, tennis courts and auxiliary parking to provide a buffer between hazardous vegetation
                      and the proposed structures.
               •      A minimum setback between future habitable structures and the edge of potential
                      hazardous vegetation is 15.7 metres which achieves a radiant heat flux of less than
                      29kW/m2 and as such an acceptable level of risk achieved as defined under the State
                      Planning Policy, Natural Hazards, Risk and resilience.
               •      Landscaping within the site to utilise species considered to be less flammable where
                      rehabilitation is required to match the existing 12.2.5 Regional Ecosystem.




Document Set ID: 22048375
Version: 34,
         32, Version Date: 24/10/2023
                           05/07/2023