Bushfire Hazard Assessment & Management Plan v1 - 60 Glenridge Drive COOROIBAH

Bushfire Hazard Assessment & Management Plan v1                                        NCES REF: J001001
Lot 47 on RP860577 – 60 Glenridge Drive, Cooroibah




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
To ensure emergency services can respond effectively, development is located within a reticulated
water supply area or includes a dedicated static water supply that is available solely for fire-fighting
purposes and can be accessed by fire-fighting vehicles.
Reticulated water supply is not available to the site hence a dedicated static water supply of 10,000L
for each future dwelling is recommended as per the SPP Bushfire 2019 water supply guidance
material recommendations.
Where reconfiguring a lot creating lots of greater than 2000 square metres
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.
All of the proposed BLE’s are provided with enough separation to achieve <29 kW/m² radiant heat
flux hence satisfying the Assessment Benchmark 4 <29 kW/m² criteria.
All of the proposed BLE’s will be located <60m from either Glenridge Drive or the proposed new
internal road and accessed via driveways with a gradient of well less than 12.5%, precluding the
BLE on Lot 3 which requires an approximate 90m traverse from the proposed cul de sac head. The
sharded driveway to Lot 3 traverses low threat conditions created by the future dwellings and
associated APZ’s on Lots 4, 6 and 7 and therefore is not expected to be exposed to risk of restricted
egress and access during a bushfire emergency on the site.
Where reconfiguring a lot creating additional lots for the purpose of residential development and a
reticulated water supply is not provided (fire trails).
To ensure safe access and egress and operational space for rural fire-fighting vehicles, a fire trail
and working area is provided that separates the new residential lot or development footprint plans
from adjacent mapped medium, high or very high potential bushfire intensity and is designed and
constructed in accordance with the design parameters in Table 4.
An SPP compliant fire break trail has been recommended.
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.
All of the proposed Lots are >2000m² and the whole site is positioned on slopes of <15%.
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,



© 2021                                               29