Reference Document - Bushfire Risk Assessment & Bushfire Risk Management Plan

                         Ecological Natural Area Management


1 Executive Summary
Introduction
A house to be constructed at 64 Pheasant Lane, Doonan, Queensland in the Noosa Council
jurisdiction is mapped in a High Potential Bushfire Intensity area on the Noosa Plan Bushfire
Overlay map in a Very High Potential Bushfire Intensity area on the Queensland Potential Bushfire
Intensity mapping. Therefore, the house is deemed to potentially be in a Designated Bushfire
Prone Area and an assessment of the bushfire risk to the building and a bushfire risk management
solution is required. A Noosa Council Information Request of 30 March 2021 in respect of
MCU21/0036 specifies that the Bushfire Attack Level Assessment for the house use a Forest Fire
Danger Index of FDDI 50.
This report is to fulfil the above requirements.
Site specific assessment of the Potential Bushfire Intensity Class
A site specific assessment of the Potential Bushfire Intensity Class using the protocol specified in A
new methodology for state-wide mapping of bushfire prone areas (Leonard et al, 2014) as
specified by Queensland State Planning Policy 2017 to assess the bushfire prone area status of
the development assessed that:
    •    The house is assessed as being in a Potential Bushfire Impact Buffer Class area.
Assessment of Bushfire Prone Area
As the house is assessed as Potential Bushfire Impact Buffer Class, this confirms that:
    •    The house is deemed to be in a Bushfire Prone Area.
As the house is in a Bushfire Prone Area, an assessment of the Bushfire Attack Level using
Australian Standard AS3959 Construction of buildings in bushfire prone areas is required to be
conducted as specified by the Queensland Building Act and the bushfire requirements of the
National Construction Code.
Assessment of the Bushfire Attack Level
The assessed Bushfire Attack Level (BAL) using Method 2 of Australian Standard AS3959 is:
    •    BAL 19 for all building elevations
Recommendations
Recommendations for the Noosa Plan Bushfire Overlay Code
It is recommended that:
    •    The level of bushfire hazard shown on a Bushfire Hazard Overlay Map is confirmed through
         the preparation of a site-specific bushfire hazard assessment prepared in accordance with
         the Planning scheme policy for the bushfire hazard overlay code and
    •    The house is sited in a low hazard area in the lot and achieves a setback of 10 metres from
         any retained vegetation.
As the house location is in a Potential bushfire Impact Buffer Class area and a reliable reticulated
water supply is not available,
It is recommended that:
    •    The premises to have a minimum water supply capacity of 5,000 litres dedicated for fire
         fighting purposes which is sourced from a separate tank, a reserve section in the bottom
         part of the main water supply tank, a swimming pool installed immediately upon
         construction or a permanent dam.


Bushfire Risk Assessment and Management Plan for a house at 64 Pheasant Lane, Doonan      September 2020

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