Bushfire Hazard Assessment & Management Plan v2 - 30 Pottery St Pomona 2021

Bushfire Hazard Assessment & Management Plan v2                                       NCES REF: J000601
Lot 496 on MCH591 – 30 Pottery St, Pomona




7.2 State Planning Policy – Natural Hazards, Risk and Resilience
The Department of State Development, Manufacturing, Infrastructure and Planning’s State Planning
Policy – State interest guidance material – Natural hazards, risk and resilience – Bushfire (December
2019) contains the development assessment benchmarks for natural hazards, risk and resilience -
bushfire. The SPP assessment benchmarks prevail over those prescribed in the Noosa Plan Natural
Hazards Overlay Code where they involve the same design elements. An assessment of the
proposed development’s compliance with each of the assessment benchmarks has been provided
below.
Assessment Benchmark 4
Where reconfiguring a lot creating lots of greater than 2000 square metres (Note - applicable to Lot
8 only)
To ensure emergency access and operational space for firefighters, include a development footprint
plan that is separated from the closest edge of the adjacent mapped medium, high or very high
potential bushfire intensity area by a distance that achieves a radiant heat flux level of 29 kilowatt
per square metre or less. To facilitate safe evacuation during a bushfire event, include a development
footprint plan that is located within 60 metres of the street frontage and sited to enable a route
between the development footprint plan and the street frontage with a gradient that does not exceed
of 12.5 per cent.
The Lot 8 building envelope has been provided with a dedicated 19m Asset Protection Zone to
separate it from the adjacent hazardous VHC 9.1 contained within the covenant which is sufficient
to achieve <29 kW/m² radiant heat flux acting on the building envelope. The proposed driveway is
less than 60m in length over gentle slopes which are less than 12.5 per cent hence satisfies the
Assessment Benchmark 4 <29 kW/m² criteria.
Where reconfiguring a lot creating lots of 2000 square metres or less (Note – applicable to all other
allotments)
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
kilowatt per square metre or less at:
1. The building envelope, if identified at RaL stage, or
2. Where a building envelope is not identified, at all the lot boundaries.
All other building envelopes have been located sufficient distance (i.e., >17.2m) to achieve <29
kW/m² radiant heat flux exposure thereby satisfying the Assessment Benchmark 4 <29 kW/m²
criteria.
Assessment Benchmark 5
Where reconfiguring a lot:
Subdivision design avoids locating lots (or for lots greater than 2000 square metres, avoids locating
the development footprint plan) that are within bushfire prone areas and on ridgelines, saddles and
crests where slopes exceed 15 per cent.
The development is positioned on the crest and upper slope of a southerly declining hillside, with
minimal hazardous vegetation located downslope of the development. The dominant slope to the
south declines at approximately 12% (7 degrees) and therefore complies with Assessment
benchmark 5.
Assessment Benchmark 7
Where a requirement for an asset protection zone (or similar) exists:
Landscaping treatments comprise only low threat vegetation, including grassland managed in a
minimal fuel condition, maintained lawns, golf courses, maintained public reserves and parklands,
vineyards, orchards, cultivated gardens, commercial nurseries, nature strips and windbreaks.
OR



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