Attachment 1 - Amended advice form Rob Friend and Associates

                                                 5


              Inputs                                           Outputs
Flame width            100 m      Minimum distance to < 40      9.1 m
                                  kW/m²
Windspeed              n/a        Minimum distance to < 29                       12.4 m
                                  kW/m²
Heat of combustion     18,600     Minimum distance to < 19                       18.2 m
                       kJ/kg      kW/m²
Flame temperature      1,090 K    Minimum distance to < 12.5                     26.3 m
                                  kW/m²
                                  Minimum distance to < 10                       31.5 m
                                  kW/m²
Rate of Spread - Mcarthur, 1973 & Noble et al., 1980
Flame length - NSW Rural Fire Service, 2001 & Noble et al., 1980
Elevation of receiver - Douglas & Tan, 2005
Flame angle - Douglas & Tan, 2005
Radiant heat flux - Drysdale, 1999, Sullivan et al., 2003, Douglas & Tan, 2005


   14. Therefore, the minimal distance that achieves a Radiant heat flux of 29kW/m2 is 12.4
       metres and this spatially located on Figure 1 and the light blue line.
Conclusion
Based on the above analysis we can conclude that;
   1. The clearing of Category X regulated vegetation that is not mapped under any other level
      of vegetation or habitat protection by the State i.e. Koala Habitat Area, or protected
      vegetation in a Planning instrument, does not require any approvals from the State or a
      Local Government for its removal.
   2. The exempted clearing distance for the existing development and the proposed
      development is a clearing with of 24.0 metres.
   3. However, the only clearing that is necessary is that which achieves a radiant heat flux of
      29kW/m2 is 12.4 metres, the only clearing that is necessary of any area of category B
      regulated vegetation is that which is within 12.4 metres of the closest edge of the existing
      and proposed infrastructure.
   4. As the 12.4 metres necessary clearing distance for a necessary firebreak is less than the
      1.5 time the height of the tallest adjacent trees, this clearing is considered to be exempted
      clearing.