Appendix D - Bushfire Risk Assessment and Management Plan

                         Ecological Natural Area Management


5.2    Derivation of inputs for assessment of the Potential Bushfire Intensity Class
The assessment of the Potential Bushfire Intensity Class using the protocol of A new methodology
for state-wide mapping of bushfire prone areas (Leonard et al, 2014) requires the following inputs.
Potential Fuel Load
Based on the map of the visually assessed vegetation communities shown in Figure 9, the
Potential Fuel Loads can be derived by relating the assessed vegetation to the Vegetation Hazard
Classes in Bushfire Resilient Communities.

Table 2: Potential fuel loads for the assessed vegetation communities based on their applicable
Vegetation Hazard Classes
   Vegetation community                           Vegetation Hazard Class                            Potential fuel load

Eucalyptus spp, Corymbia VHC 9.1 Moist to dry eucalypt open forests on                                   24.1 t/ha
 intermedia open forest         coastal lowlands and ranges

   Notophyll Vine Forest                      VHC 3.1 Notophyll vine forest                                4.5 t/ha

        Treed parkland              VHC 39.2 Low to moderate tree cover in built-                           8 t/ha
                                                    up areas

       Suburban areas                  VHC 41.4 Discontinuous low grass or tree                             3 t/ha
                                                       cover


Fire Weather Severity
The Fire Weather Severity used was FFDI 53 as required by Bushfire Resilient Communities

5.3    Potential Bushfire Intensity Class for ranges of bushfire fireline intensities
Using the inputs derived above, the Potential Bushfire Intensity Classes for the patches of
vegetation are derived from bands of fireline intensities using the table below.

Table 3: Table of Potential Bushfire Intensity Class derived from Potential Fire line Intensity
            Potential Bushfire Intensity Class                                  Potential Fire-line Intensity
                          Very high                                                    >40,000 kW/m
                             High                                                  20,000 to 40,000 kW/m
                           Medium                                                   4,000 to 20,000 kW/m
                             Low                                                    Less than 4000 kW/m
(Source: Leonard et al, 2014, page 20)




Bushfire Risk Assmnt & Mngt Plan for a “Community housing” development at 55 Carpenters Rd, Cooroy              February 2022

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