RFI - Attachment 3 - Arborcultural Impact Assessment Report · 132003.221108.3

Method used to gather data include:
  • Camera - to record images of the site and trees identified within this assessment.
  • Arborist Tape - to measure stem Diameter at Standard Height (1.4m) (DSH)
  • Nylon mallet - to identify wood decay through sounding.
  • Mobile device – to record GPS location and data required for assessment.
  • Tree heights estimated.
  • Canopy spread paced estimates


2.3 Scope and Limitations
At a basic level assessment, trees are inspected from easily accessible ground. Climbing plants and
dense vegetation will not be removed to get a closer look unless an obvious tree risk feature
presents itself and the benefit outweighs the loss of vegetation and potential habitat.

When a tree is deemed to have an obvious tree risk feature, a detailed assessment is carried out from
the ground using the QTRA tree risk app. This method calculates the risk of harm (RoH)
quantitively by considering probability of failure and the consequence if the failure was to occur.

If more detail is needed regarding the likelihood of failure of;
    • A tree
    • Tree parts
    • Extent of decay or;
    • A closer look at a feature inaccessible from the ground

Options will be provided within the “tree management recommendations” found within the report.

   •   No aerial inspection of the tree(s) will be undertaken - Unless otherwise stated within the
       brief of the report or additional requests are made by the client.
   •   No tissue sampling was undertaken. Assessment of tissues (living or dead) was from a
       ground based visual inspection only.
   •   No soil nutrient tests or geotechnical soil compaction tests were undertaken.
   •   No advanced wood decay / structural integrity testing (such as Resistograph or sonic
       (ultrasound) tomography) was undertaken. Where required the author undertook a basic
       audible wood resonance test using a sounding mallet to determine any levels of potential
       decay or lack of structural integrity present.
   •   No topography information used.
   •   Access to neighbouring properties was not permitted, therefore assessment was limited to
       only parts of the tree visible from within the subject sites and measurements estimated.


2.4 Documents reviewed
   •   Australian Standard AS4970 – 2025 ‘Protection of Trees on Development Sites’
   •   Australian Standard AS4373 – 2007 ‘Pruning of Amenity Trees’
   •   Proposed Alterations & Additions September 2025, A – 04/09/2025 Draft Review




    Tree Report: (AIA-27 Bayview NH-120226)                          Report Number:     (001)

    Prepared by (Sam Carr – Specialist Arbor Services Pty Ltd)                        Page 3 of 26