arobist report · RAP15/0017

2. BRIEF



Terms of Reference


Request by Annette Warner (Annette Warner Pty Ltd-Building Design Consultants) to prepare a
Tree Protection assessment in relation to possible vegetation disturbance during site
developments at 1 Natasha Avenue, Noosa Heads.


Procedure


A ground site assessment was conducted on August 25, 2015.


3. FINDINGS


3.0   Building proposals for 1 Natasha Avenue, Noosa Heads will only slightly impact on the open
      space conservation zone on the northern side of the property. Some saplings will require
      removal but these are predominantly exotic species (Cassia, Frangipani, Cordyline, Golden
      Cane Palm, Triangle Palm) or juvenile natives and not greatly significant although slope
      stability must be considered.
      The larger “Pink Bloodwood” Corymbia intermedia is in average to poor condition and will
      require removal but is within the dripline of the ‘‘Tuckeroo” Cupaniopsis anacardiodes so
      will not cause significant slope disturbance.

3.1   The “Tuckeroo” is a real feature and can be protected safely if tree protection strategies are
      followed. The tree stem measures 0.6 metres approximately which when applying the
      AS4970-2009 (Protection of trees on development sites) requires a 6 metre root protection
      zone (RPZ). Proposed excavations are either beyond this zone or are of a minor nature. Any
      works within the dripline of this tree (Tree Protection Zone – TPZ), which is 8 metres approx.
      in all directions from the tree should be carried out with the supervision of the Project
      Arborist. Some minor crown pruning will be required but the canopy dominates to the north
      due to the location of the “Pink Bloodwood” so this should not affect the tree much at all.
      The intention, subject to structural engineering, is to cantilever a minor portion of outdoors
      areas on the Northern side which will greatly reduce impact to the site vegetation.

4. SUMMARY


4.0   The open space conservation zone is of vital importance to the local landscape and must be
      preserved as such. Because of the cantilever design excavation within this zone will be kept
      to a minimum but some saplings and exotics and a “Pink Bloodwood” will require removal.
      These removals are all located above or to the south of the remaining and protected
      “Tuckeroo”. All removals will need to be undertaken sensitively and root systems must
      remain in situ to assist in maintaining slope stability.

4.1   The “Tuckeroo” must be protected and all works within the TPZ must be supervised or
      implemented by the Project Arborist.
      Soil conditioning and mulching the root zone is also recommended.


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