Aborist Report 20-10-23 Hoffman Rd (002)

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Brief:
  •   Identify trees impacted by the proposed Construction of the Noosa Health Precinct.
  •   Determine Tree Protection Zones of these trees using the Australian standards 4970-
      2009, Protection of trees on development sites
  •   Recommend any treatments or ongoing monitoring or maintenance.


Methods and Procedures:
  •   Discussions on site with Peter Shilkin from Integral Construction to determine the
      extent of the approved clearing works and identify the trees for retention.
  •   Visual inspection of the standing stock at ground level and light probe investigation of
      the root plate of the trees to determine the extent and health of sub-canopy structures.
  •   No scientific analysis was conducted during the preparation of this report.
  •   Australian standards 4970-2009, Protection of trees on development sites, AS 4373-
      2007 pruning of amenity trees have been referenced to prepare this report.
  •   International Society of Arboriculture Tree Risk Assessment Manual was used to
      provide recommendations in this report
  •   The weather on the day of the inspection was fine, moderate wind and a warm
      temperature
  •   This report provides a list of my findings during my ground level inspection, some
      tree defects may be present but not seen from this height.


Summary
  •   This site located at Noosaville is a vacant allotment where the proposed works is to
      construct the Noosa Health Precinct and carpark complex.
  •   Some trees within the road reserve may be affected and are mentioned in this report.
  •   Trees appear to be in poor to average condition as they are within the road reserve
      which is a constricted environment.
  •   Root plate heaving is evident at some trees which indicates a heavy and compacted
      soil environment.
  •   All clusters of trees approved for removal are isolated by a minimum of 15m from
      any trees to be retained so the approved works should not impact adjoining trees if the
      works is restricted to within the bounds of the construction site.
  •   Tree Protection Zones listed, have been calculated per the Australian standards 4970-
      2009, Protection of trees on development sites.
  •   All intrusions within the TPZ’s are to be overseen by the Project Arborist.
  •   ANY ACTIVITY WITHIN THE TREE PROTECTION ZONE REQUIRES
      THE APPROVAL OF THE PROJECT ARBORIST.

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Site Plan

 

 

    
  

ELEVATION VIEW

PLAN VIEW

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                                        Tree 1
                     Atractocarpus fitzalanii 3m x 2m Cal .080m

                            Tree Protection Zone 2m Radius
                                  Structural Root Zone 1.5m Radius

Description:
   • This tree is in good condition and is within a mulched landscape surrounded by a
       community of plants
   • The proposed works will not encroach within the TPZ.
   • This tree is viable and it is recommended to maintain and fence off a Tree Protection
       Zone for the duration of the construction.

Recommendations:
   • I recommend to retain this tree
   • Any proposed works within the TPZ is to be overseen by the Project Arborist.

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                                        Tree 2
                      Elaeocarpus reticularis 5m x 2m Cal .080m

                            Tree Protection Zone 2m Radius
                                  Structural Root Zone 1.5m Radius

Description:
   • This tree is in poor condition with low foliage mass.
   • This tree is encumbered and supported by its adjoining tree
   • The proposed works will not encroach within the TPZ.
   • This tree is viable and it is recommended to maintain and fence off a Tree Protection
       Zone for the duration of the construction.

Recommendations:
   • I recommend to retain this tree
   • Any proposed works within the TPZ is to be overseen by the Project Arborist.

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                                      Tree 3
              Melaleuca linarifolia 7m x 6m Cal .150m, .200m, .300m

                          Tree Protection Zone 4.68m Radius
                                 Structural Root Zone 2.23m Radius


Description:
   • This tree is in good condition with typical foliage mass.
   • This tree is encumbered and supported by its adjoining tree
   • Co-dominant trunk pedestal
   • Root plate is heaving due to heavy compacted soil profile.
   • The proposed works will not encroach within the TPZ.
   • This tree is viable and it is recommended to maintain and fence off a Tree Protection
       Zone for the duration of the construction.

Recommendations:
   • I recommend to retain this tree
   • Any proposed works within the TPZ is to be overseen by the Project Arborist.

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                                      Tree 4
              Callistemon viminalis 4m x 2m Cal .050m, .070m, .050m

                            Tree Protection Zone 2m Radius
                                  Structural Root Zone 1.5m Radius


Description:
   • This tree is in poor form with low foliage mass.
   • This tree is encumbered and supported by its adjoining tree
   • The proposed works will not encroach within the TPZ.
   • This tree is viable and it is recommended to maintain and fence off a Tree Protection
       Zone for the duration of the construction.

Recommendations:
   • I recommend to retain this tree
   • Any proposed works within the TPZ is to be overseen by the Project Arborist.

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                                        Tree 5
                      Melaleuca linarifolia 3m x 1.5m Cal .050m

                            Tree Protection Zone 2m Radius
                                  Structural Root Zone 1.5m Radius

Description:
   • This tree is in good condition with typical foliage mass.
   • Co-dominant trunk pedestal
   • The proposed works will not encroach within the TPZ.
   • This tree is viable and it is recommended to maintain and fence off a Tree Protection
       Zone for the duration of the construction.

Recommendations:
   • I recommend to retain this tree
   • Any proposed works within the TPZ is to be overseen by the Project Arborist.

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                                          Tree 6
                         Banksia ericifolia 2m x 3m Cal .050m,

                            Tree Protection Zone 2m Radius
                                  Structural Root Zone 1.5m Radius


Description:
   • This tree has poor form with low foliage mass.
   • Co-dominant trunk pedestal
   • The proposed works will not encroach within the TPZ.
   • This tree is viable and it is recommended to maintain and fence off a Tree Protection
       Zone for the duration of the construction.

Recommendations:
   • I recommend to retain this tree
   • Any proposed works within the TPZ is to be overseen by the Project Arborist.

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                                      Tree 7
              Melaleuca linarifolia 5m x 3m Cal .100m, .100m, .070m

                            Tree Protection Zone 2m Radius
                                  Structural Root Zone 1.5m Radius


Description:
   • This tree has poor form with low foliage mass.
   • This tree is encumbered and supported by its adjoining tree
   • Co-dominant trunk pedestal
   • The proposed works will not encroach within the TPZ.
   • This tree is viable and it is recommended to maintain and fence off a Tree Protection
       Zone for the duration of the construction.

Recommendations:
   • I recommend to retain this tree
   • Any proposed works within the TPZ is to be overseen by the Project Arborist.

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                                      Tree 8
              Callistemon viminalis 5m x 3m Cal .100m, .070m, .080m

                            Tree Protection Zone 2m Radius
                                  Structural Root Zone 1.5m Radius

Description:
   • This tree has poor form with low foliage mass.
   • This tree is encumbered and supported by its adjoining tree
   • Co-dominant trunk pedestal
   • The proposed works will not encroach within the TPZ.
   • This tree is viable and it is recommended to maintain and fence off a Tree Protection
       Zone for the duration of the construction.

Recommendations:
   • I recommend to retain this tree
   • Any proposed works within the TPZ is to be overseen by the Project Arborist.

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                                     Rear boundary tree

The trees to the rear of the property are all in close proximity to the boundary, some are
positioned on the neighboring property.

The dominate trees in this isolated strip of vegetation is Schefflera actinophylla (Umbrella
Tree). Also situated astride the boundary is 2 large Eucalyptus tereticornis which have a
caliper of .600m and .700m. Other varieties that were observed are;
     • 2 Glochidion ferdinandi
     • Alphitonia excelsa
     • Casurina equsifolia
     • Acacia Sp
     • 2 Melaleuca quinquenervia
     • 1 cluster of Macaranga

The approved construction works will undermine these trees and is well within their
Structural Root Zone rendering them unstable and unviable. These trees would need to be
removed to construct the development.

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Protection of trees to be retained:
To preserve the retained trees within this site tree exclusion zones must be determined. To
calculate these zones the formula has been used from the Australian Standard AS4970-2009
Protection of trees on development sites. This is the “Tree Protection Zone”.

Any encroachment, disturbance, or compaction of the soil within the Tree Protection Zone
can damage or destroy the fine absorbing roots. Injury caused by cutting, crushing,
suffocation, poisoning, or moisture stress by inundation or dehydration can result in damage
to a tree. The effects of some Injuries may not be apparent for some time.

The following guidelines are minimum standard I recommended for the preservation of these
trees. These guidelines should be incorporated in construction contracts, and the details made
available to all parties involved with work on the site, including equipment operators. Other
guidelines and protective measures may also be appropriate, in addition to those listed below.

     1. Protection Barrier: A suitable protection barrier is to be installed around the trees to
         be preserved. The barrier shall be constructed of durable fencing material, such as
         plastic construction fencing or chain-link fencing. The barrier shall be installed at
         the Tree Protection Zone perimeter. The fencing is to be maintained in good repair
         throughout the duration of the project, and should not be removed, relocated, or
         encroached upon without permission of the consulting arborist.
     2. Storage of Materials: There is to be no storage of materials or supplies of any kind
         within the area of the protection barriers. Concrete and cement materials, block,
         stone, sand and soil are not being placed within any Tree Protection Zones.
     3. Fuel Storage: Fuel storage will not be permitted within 30 meters of any tree to be
         preserved. Refueling, servicing and maintenance of equipment and machinery will
         not be permitted within 30 meters of protected tree.
     4. Debris and Waste Materials: Debris and waste from construction or other activities
         cannot be permitted within the Tree Protection Zones. Wash-down of concrete or
         cement handling equipment, in particular, will not be permitted within 30 meters of
         protected tree.
     5. Altered Site Hydrology: No changes in soil surface hydrology, any grade changes
         proposed that will impact on the Tree Protection Zones should be approved by the
         consulting Arborist before construction begins.
     6. Damages: All precautions should be taken to mitigate any potential injuries to the
        protected trees and any damages or injuries should be reported to the project arborist
        as soon as possible. Severed roots shall be pruned cleanly to healthy tissue, using
        sharp clean pruning tools. Broken branches or limbs are to be pruned in accordance
        with the Australian Standard AS4373-2007 Pruning of Amenity Trees.




Assessed by: David Hawthorne                                              Dip Arb AHC50510
Consulting Arborist AQF5                                                  Dip Hort/Arb RTF50203
                                                                          Dip Hort RTF50103
                                                                          MQAA / ISA QTRA
                                                                          AIH RH0150