Approved Document Bushfire Hazard and Mitigation Plan 25 02 2025 MCU21/0110 - Negotiated

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  iii.  The FFDI for area is determined by the State Government after Leonard et al.
        (2014).
  iv.   The slope was estimated using slope analysis and field data.
2. With respect to the Girraween Nature Refuge and surrounding vegetation to the north
    and east of the subject site, the area presents as a High potential bushfire intensity:
    a. The site inspection confirmed the vegetation type of the area to be analogous with
       current Regional Ecosystem mapping.
    b. Table 2 below provides the derived Potential bushfire intensity level using the
       methodology after Leonard et al (2014) and as contained in the State Planning Policy
       – Natural Hazards, Risks and Resilience – Technical Manual – A fit for Purpose
       approach in undertaking natural hazard studies and risk assessment (April 2016)

Table 2 - Fireline Intensity Model Data for vegetation in Girraween Nature Refuge and
surrounding vegetation to the east and north of the subject site.

              Characteristic                                    Input/output value
 Vegetation hazard class                          9.1 Moist to dry eucalypt open forests on
                                                  coastal lowlands and ranges
 Potential fuel load (t/ha)                       24.1 t/ha
 FFDI                                             55
 Slope (degrees)                                  5.58 degrees
 Potential fireline intensity (kW/m)              29,963 kw/m
 Potential Bushfire Hazard Class                  High
   i. The VHC 9.1 – moist to dry eucalypt open forests on coastal lowlands and ranges
       has been used based on the RE mapping and species observed during the site
       inspection.
   ii. The Potential fuel load is attributed with a potential fuel load by the State Government
       after Leonard et al. (2014).
  iii. The FFDI for area is determined by the State Government after Leonard et al. (2014).
  iv. The slope was estimated using slope analysis and field data.

With regard to the radiant heat flux and the minimum setback distance necessary to achieve
an acceptable level of risk, as defined under the State Governments, Bushfire Resilience
Communities, Technical Reference Guide for the State Planning Policy (Oct 2019), using the
AS3959 Minimum Distance Calculator with an FFDI of 48, a Vegetation Hazard Class of 9.1
– Moist to dry eucalypt open forest on coastal lowlands and ranges, an downslope
characteristic of 8 degrees and a surface fuel load of 17.2t/ha and a total fuel load of
24.2t/ha the calculations is provided below in Table 3.

Table 3 - Noosa Springs - Minimum Distance Calculator - AS3959-2018 (Method 2)
(Calculated October 9, 2020, 4:49 pm (MDc v.4.8)

              Inputs                                             Outputs
 Fire Danger Index 48                  Rate of spread               1.75 km/h
 Vegetation          Forest            Flame length                 14.28 m
 classification
 Surface fuel load   17.5 t/ha         Flame angle                  54 °, 64 °, 72 °, 76 °, 78 ° &
                                                                    83 °
 Overall fuel load        24.2 t/ha    Elevation of receiver        5.57 m, 6.14 m, 6.39 m,
                                                                    6.36 m, 6.31 m & 5.47 m
 Vegetation height        n/a          Fire intensity               21,888 kW/m

         RF17-040 – Boutique Hotel – Noosa Springs – Bushfire Hazard Assessment & Management Plan
Rob Friend & Associates Pty Ltd                                                     25th of February 2025