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ATTCH 2 - IR Response - Ecological and Bushfire IR Response (Cardno)
Attached to the e-mail RAL17/0501 IR Response email 1 of 4.
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Bushfire Management Plan
Lot 71 on MCH 2854, Castaways Beach
located on proposed Lot 711, which is separated from the adjacent Bushfire Hazard Area to the west by a
buffer at least 33m comprised of:
> cleared areas of the David Low Way reserve ( > 17 m);
> the 10m wide band of vegetation contained within Covenant Area P within Lot 711; and
> the 6m wide formed access way and APZ .
This corresponds to the adoption of a maximum BAL-19 standard in respect of a dwelling located on Lot 711
within the defined building envelope in order satisfy BCA and AS3959(2009) minimum requirements. The
design and construction of dwellings on all other lots to a BAL -19 standard would also satisfy BCA and
AS3959(2009) minimum requirements.
Notwithstanding the above it is noted that:
> the specific BCA and AS3959 BAL requirements for each lot will need to be confirmed once all
relevant conditions of approval for the proposed development are available; and
> individual home owners may choose to adopt a higher AS3959 BAL rating than is required for the
design and construction of their dwelling.
5.4 Landscape Design
Inappropriate landscape designs in bushfire prone areas (i.e. any land within100m of bushfire prone vegetation
with a Medium to Very High hazard rating) may expose a dwelling to increased levels of ember attack, radiant
heat and flame contact. However well-placed designed landscaping with appropriate plant species may
actually help protect houses by:
> reducing the amount of radiant heat received by a house;
> reducing the chance of direct flame contact on a house;’
> reducing wind speed around a house;
> deflecting and filtering embers; and
> reducing flammable landscaping materials within the defendable space.
All vegetative material can burn under the influence of a bushfire, as such landscape design in bushfire prone
areas should give careful consideration to:
> species selection;
> species planting proximity to assets and access paths relative to their flammability; and
> avoidance of both horizontal and vertical continuity of vegetation.
In general “mesic” plant species that have a higher leaf moisture content, less bark and a lower rate of leaf
drop will assist with reducing available bushfire fuel loads thereby assisting in reducing the likelihood and
severity of bushfire attack.
The landscaping of building envelopes within each of the proposed lots should make use of native mesic plant
species in combination with adherence to the following guidelines.
> Establish and maintain lawn or paved areas such as paths and/or a pebble garden with herbs near to
the house, including the defined APZs.
> No planting of trees or shrubs within the define APZs to allow clear access and minimise canopy
overhang of roofs and associated accumulation of leaf litter.
> Outside of the APZs, space tree and shrub plantings to avoid the creation of a continuous bands of
vegetation that may carry fire.
> Prune lower limbs of trees to a height of 2m above ground level.
WE17035 | 13 November 2017
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