SUPERSEDED Reference Document Bushfire Hazard Assessment & Management Plan v 2 June 2024 MCU24 0084 (1)

Bushfire Hazard Assessment & Management Plan v2 NCES REF: J001313
Lot 4 on RP160124 — 658 Louis Bazzo Dr, Ringtail Creek QLD 4565

 

4 BUSHFIRE RISK ASSESSMENT

4.1. General

A bushfire risk assessment for the proposed Wedding marquee site has been prepared generally in
accordance with State Planning Policy — State Interest Guideline — Natural Hazards, Risk and
Resilience (DILGP, 2016) and AS/NZS ISO 31000:2018 — Risk Management Methodology.

The bushfire risk assessment details the likelihood that the proposed site will be exposed to risk of
radiant heat from the adjacent confirmed Bushfire Potential Intensity areas depicted on Plan BFO3 —
Local Hazard Map. Plate 6 illustrates the concept of radiant heat exposure.

 

 

 

Sb a

ek Heat

 

 

 

 

 

Plate 6 — Figure A 5.1 Bushfire attack mechanisms (Planning for Bush Fire Protection, 2006)

According to AS/NZS ISO 31000:2018, a ‘hazard’ is defined as a source of potential harm or a
situation with a potential to cause loss, whereas a ‘risk’ is the chance of something happening that
will have an impact on objectives measured in terms of consequences and likelihood. The State
Planning Policy — State Interest Guideline — Natural Hazards, Risk and Resilience (DILGP, April
2016) refers to ‘acceptable risk’, ‘tolerable risk’, and ‘intolerable risk’ which are defined below.

e Acceptable risk

o A risk that, following an understanding of the likelihood and consequences, is
sufficiently low to require no new treatments or actions to reduce risk further.
Individuals and society can live with this risk without feeling the necessity to reduce
the risks any further.

e Tolerable risk

o A tisk that, following an understanding of the likelihood and consequences, is low
enough to allow the exposure to continue, and at the same time high enough to
require new treatments or actions to reduce risk. Society can live with this risk but
believe that as much as is reasonably practical should be done to reduce the risks
further.

e Intolerable risk

co Arisk that, following an understanding of the likelihood and consequences, is so high
that it requires actions to avoid or reduce the risk. Individuals and society will not
accept this risk and measures are to be put in place to reduce risks to at least a
tolerable level.

Assessment Benchmark 4 of the SPP Bushfire 2019 references radiant heat flux exposure of
<29kW/m? on any part of the building as generating an Acceptable to Tolerable level of risk.
Assessment Benchmark 4 states:

Development supports, and does not hinder, disaster management response or recovery capacity
or capabilities. Where reconfiguring a lot creating lots of 2000 square metres or less:

To ensure emergency access and operational space for firefighters the subdivision layout results in
lots that are sited so that they are separated from the closest edge to the adjacent medium, high or
very high potential bushfire intensity area by a distance that achieves a radiant heat flux level of 29

 

© 2024 19

Document Set ID: 23422887
Version: 3, Version Date: 14/01/2025