Approved Document Arborist Report v3 2 OPW25-0012 · OPW25/0012

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[OCR of page images]
Arborist Report
3 &7 Serenity Close, Noosa Heads

3 METHODS

Tree survey and arboricultural assessment was undertaken within the following locations
and dates:

e Open space areas (outside of the development footprint), areas zoned
Environmental Management and Conservation, 6 metre boundary setbacks, road
reserves and other areas determined by the client - May 2022, June 2022 and
February 2023.

e Survey of non-juvenile koala habitat trees within the site boundary (to meet State
Assessment and Referral Agency requirements) - September 2023.

e Survey of potential landscape trees determined by the client - March 2024.

The assessment was carried out by a tertiary-qualified botanist (AQF Level 8) and tertiary
qualified arborist (AQF Level 5) with more than 5 years’ vegetation management
experience. Audits of parts of the tree survey were undertaken throughout 2022 - 2024,
with the most recent audit undertaken in December 2024.

The survey included trees or shrubs with a diameter at breast height of greater than
100mm and all non-juvenile koala habitat trees’.

For each of the surveyed trees the following attributes were recorded:

e Species,

e Tree dimensions (height, canopy spread and diameter at breast height (DBH)),

e Canopy structure and form, disease and any other significant features,

e Trunk condition and form,

e Roots and root collar condition and form,

e Overall assessment of tree condition, vigour and Sustainable Retention Index Value
(SRIV),

e Visual tree risk assessment (Dunster et a/, 2013),

e Assessment of habitat features including hollows and scratch marks, nests, etc., and,

e Calculation of TPZ and SRZ in accordance with Australian Standard 4970-2009
Protection of trees on development sites (AS 4970-2009).

The condition / health of the trees was assessed through a qualitative assessment of their
vigour and condition based on methods described in A visua/ method of objectively rating
the viability of urban trees for development sites and management, based on general tree

 

™Non-juvenile koala habitat tree is defined in the Queensland Environmental Offsets Policy Significant Residual Impact Guideline
2014 as:

a koala habitat tree that:
a) is more than 4m high; or
b) has a trunk with a circumference of more than 31.5cm at 1.3m above the ground.

LFORIAS

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