Reference Documents - RAL22/0034

                    FPE Ref: 6176-221031-1.0



                     3.3     MAXIMUM LANDSCAPE SLOPE

                     The slope of land underlying the surrounding vegetation is generally steep. The maximum potential slope
                     of the landscape that could influence the rate of fire spread has been summarised in Table 3.

                     Table 3. Maximum Landscape Slope

                                                                                                    Maximum Landscape Slope
                                               Vegetation Description
                                                                                                              (degrees)

                       Vegetation Type 1 – Riparian vegetation dominated by C. camphora
                                                                                                                   1
                       with occasional P. elliottii and L. camara understory

                       Vegetation Type 2 – Patch of C. camphora and Araucaria bidwilli                             1

                       Vegetation Type 3 – Discontinuous vegetation along watercourse
                                                                                                                   1
                       including C. camphora, Endiandra discolour and Alphitonia petriei

                       Vegetation Type 4 – Dense forest regrowth dominated by C. camphora                          1

                       Vegetation Type 5 – Dense forest regrowth dominated by C. camphora
                                                                                                                   1
                       with L. camara understory

                       Vegetation Type 6 – Continuous vegetation and low/maintained grass                          1

                     3.4     FIRE DANGER INDEX

                     The Queensland government produce a publicly available data package which includes selected inputs
                     and information used by the CSIRO in conjunction with the QFES to prepare the State-wide Bushfire
                     Hazard Area (Bushfire Prone Area) mapping (July 2014). The data includes Fire Weather Severity (Fire
                     Danger Index - FDI). A review of the dataset for the subject site indicates that the site is located within a
                     band of FDI 47.

                     3.5     PATCH AND CORRIDOR FILTERING

                     Section 4.2.6 of Bushfire Resilient Communities (QFES (2019) outlines the patch and corridor filtering
                     process to modify potential intensity of small patches and corridors (based on Leonard et al 2017). This
                     includes removing isolated patches of a single VHC less than 1ha if they are further than 100 m from
                     other continuous vegetation greater than 2 ha in size. This also involves removing narrow corridors of
                     vegetation less than 50 m wide and removing small patches of vegetation less than 0.5 ha.

                     3.6     POTENTIAL FIRE-LINE INTENSITY

                     Potential Bushfire Intensity is calculated by inputting the site-specific input parameters discussed above
                     into the equation nominated in Leonard et al (2014). Potential Bushfire Intensity may also be determined




                   20 December 2022                          Bushfire Hazard Assessment                                              23
Document Set ID: 22990715
                  22224494                                38 Barina Court, Pomona QLD 4568
Version: 1, Version Date: 24/04/2024
                          22/12/2022