Development Application Part 2 - Environmental & Stormwater Management Plans · OPW11/0335

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3.7           FIELD ASSESSMENT

Using the SPP 1/03 methodology, it is considered there is 2 areas of unique slope, vegetation
and aspect identified that can be assessed for bushfire hazard.                                    Values were determined
through field and desktop assessment of vegetation communities, slope and aspect.                                             The
subject site has been split into two areas for the purpose of assessing the bushfire hazard
severity. Table 2 provides the determination of the seventy of bushfire hazard within each of
the vegetated hazard areas. The low wet fernland/heathland is considered to further reduce the
potential risk.


TABLE 2            SEVERITY OF BUSHFIRE HAZARD

     AREA                                    ELEMENT                                BHR         TOTAL            BHS

         1          Vegetation - Wallum Heath                                         6             6          Medium

                    Slope - Plain 0% - 5%                                             0

                    Aspect - Flat                                                     0
         2          Vegetation - Mowed grass with isolated trees                      1             1            Low
                    Slope - Plain 0% - 5%                                             0
                    Aspect - Flat                                                     0




3.8           BUSHFIRE PLANNING
As has been previously described, the site supports one area of medium bushfire hazard
severity in the western portion.               This vegetation adjoins a large continuous tract identified as
Noosa National Park (Emu Swamp Section).


The site supports slopes of less than 5%, thus no areas of High bushfire hazard were
recognised on the site. The area of wet heath provides the greatest bushfire hazard on the site,
however due to slopes of less than 5% and resultant lack of aspect and saturation of much of
the area with water, this vegetation is recognised as being of Medium-Low bushfire hazard.
Considerations of measures will be required to mitigate the bushfire risk to the development
proposed for the site.


To mitigate the site bushfire hazard, it is recommended that a 20m setback be maintained
between flammable structures within the development and retained drier closed heath
community. The set-back should incorporate a 6m fire access constructed of stable material
and which has access points at either end or sufficient turning capacity for a fire fighting vehicle
at the terminating end. The fire trail must be accessible from the development's internal road
network and is to be maintained at all times so it is clearly accessible by emergency services for
bushfire management andfire fighting purposes.




November 2007                                                                                                             (   9

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