Approved Reference Documents - 132001.210127.3

Bushfire Hazard Assessment & Management Plan v2 NCES REF: J000542
Lot 9 on RP225312-— 100 Cooyar Street, Noosa Heads

°  13.47kW/m2 RHF from VHC 29.2 to the South-east (based on 30.6m separation); and
© 12.89kW/m? RHF from VHC 34.5 to the east (based on 25.6m separation).

In this instance the application is somewhat unique in that the majority of the proposed

enforced retreat from the existing building’s footprint. At a minimum, it is advocated the
application should result in 4 non-worsening of bushfire risk acting on the building and
occupants therein. In this regard the proposed construction of a new building within the

modelling results indicated that the provision of a 2.5m radiant heat barrier will reduce the
RHF exposure to 10kW/m2 and thus is deemed acceptable to satisfy the requirements of
Assessment Benchmark 3. The output transcript of the 2.5m high barrier model run is
presented as Appendix 5.

Therefore, it is recommended a 2.5m non-flammable fence is constructed adjacent to
the southern extension of the existing building footprint. The fence must extend far
enough so that any Part of the building extension which is not directly shielded by line of sight
to the adjacent bushland hazard is exposed to 10kW/m? radiant heat flux or less. The extent
of the radiant heat barrier required to achieve this is depicted on Figure BFO4 — Setback
Requirements and consists of a barrier length of 37m north of the south-east property
boundary and 40m west of the southeast property boundary. A linear landscape treatment of
low flammability native Species either side of the radiant heat barrier can help increase the
aesthetics of the barrier but also assist with further reductio of the radiant heat flux acting on
the building extension,

The following circumstances are also deemed to reduce the potential severity of impact that
may arise as a result of the identified risk (additional context is Provided in Section 5).

¢ All emergency services required during a bushfire event are located directly adjacent
to the site to the west including Noosa Heads Fire & Rescue Station, Noosa Heads
Police Station, and Queensland Ambulance Service;

¢ The proposed development will be connected to town water hence have a pressurized
reliable supply of water in an emergency;

¢ No increase in the number of people living or congregating on premises is Proposed;

¢ Formed sealed access points are available to the north and south perimeters of the
site and the development design proposes a continuous, level, unsealed, trafficable
points, thereby facilitating direct access to a potential fire front for fire suppression
Purposes (refer BF04 green linework);

¢ The developer Proposes to voluntarily design the building to the applicable AS3959
2018 BAL construction standard hence the building could be expected to withstand the
radiant heat flux and ember attack for the modelled bushfire conditions (refer Section
6);

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