Appendix I - Bushfire

                                                            [7]


Characteristic                               Input/output value
Potential Bushfire Hazard Class              High
1 – the VHC 22.1-Melaleuca open forests on seasonally inundated lowland coastal swamps was used because
2 – the Potential fuel load is attributed with a potential fuel load by the State Government as part of the Leonard et. al.
(2014) methodology.
3 – the FFDI for the area is determined by the State Government as part of the Leonard et. al. (2014) methodology.

         We also acknowledge that while the Lomandra Place Bushland Reserve is an area of low bushfire
          hazard, it may become involved in a bushfire event and as such needs to achieve a separation from that
          vegetation necessary to achieve the radiant heat flux of 19kW/m2.
         Table 3 provides the outputs for potential setbacks from the retained vegetation. We acknowledge the
          age and vulnerability of the residents using the proposed development and recommend that the setback
          should achieve a lower radiant heat level than necessary for the residents.

Table 3 – Minimum Distance Calculations

186 Cooroy Noosa Road, Tewantin - Minimum Distance Calculator - AS3959-2009 (Method 2)
                        Inputs                                                       Outputs
 Fire Danger Index               42                    Rate of spread                          0.81 km/h
 Vegetation classification       Woodland              Flame length                            8.62 m
 Surface fuel load               15 t/ha               Flame angle                             54 °, 65 °, 74 ° & 79 °
 Overall fuel load               28 t/ha               Elevation of receiver                   3.24 m, 3.57 m, 3.65 m &
                                                                                               3.51 m
 Vegetation height               n/a                   Fire intensity                          11,718 kW/m
 Effective slope                 1°                    Transmissivity                          0.863, 0.849, 0.827 & 0.803
 Site slope                      2°                    Viewfactor                              0.6056, 0.447, 0.3007 &
                                                                                               0.2043
 Flame width                   100 m                     Minimum distance to < 40 kW/m²        7m
 Windspeed                     35 km/h                   Minimum distance to < 29 kW/m²        9.5 m
 Heat of combustion            18,600 kJ/kg              Minimum distance to < 19 kW/m²        14.1 m
 Flame temperature             1,090 K                   Minimum distance to < 12.5 kW/m²      20.5 m
1. Rate of Spread - Mcarthur, 1973 & Noble et al., 1980
2. Flame length - NSW Rural Fire Service, 2001 & Noble et al., 1980
3. Elevation of receiver - Douglas & Tan, 2005
4. Flame angle - Douglas & Tan, 2005
5. Radiant heat flux - Drysdale, 1999, Sullivan et al., 2003, Douglas & Tan, 2005

Conclusion

Based on the above findings and discussions it is our opinion that: -

      1. The bushfire hazard mapping of the Tewantin National Park can effectively be mapped as an area of
         medium bushfire hazard based on the particular vegetation assemblage within the area adjacent to the
         subject site.
      2. A 100-metre-wide Potential impact buffer still extends over more than half of the subject site.
      3. Although the waterway corridor and the retained vegetation on the site are considered an area of Low
         bushfire hazard in accordance with the Patch and Corridor mapping methodology as per section 2.2.1,