Council archive · source document
Attachment 8 - Arborist Report · MCU18/0015
Attached to the e-mail Response to Information Request (Bushfire Report, Arborist Report, Previous Vegetation Clearing Approval & Registered Plan for Adjoining Viridian Covenant Area ) MCU18/0015 & RAL18/0001.
Arborist Report
Vegetation & Trees
COMPANY NAME:
Innovative Planning Solutions
ADDRESS:
27 Attunga Heights,
Noosa Heads Qld 4567
Lot 27 RP 89506
Author: Wayne Gooch
Treesafe Australia Pty Ltd
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Arborist report- TSA:IPS Attunga Lot 27 RP 89506
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Contents
1. Introduction ............................................................................................................................. 3
1.1 Overview.................................................................................................................................. 3
1.2 Brief ......................................................................................................................................... 3
1.3 Qualifications and experience ................................................................................................. 3
1.4 Documents and information provided .................................................................................... 3
1.5 Relevant background information .......................................................................................... 3
2. Site Visit and Observations ..................................................................................................... 4
2.1 Site Visits ................................................................................................................................. 4
2.2 Brief Site Description ............................................................................................................... 4
2.3 Identification and location of Vegetation ............................................................................... 4
2.4 Collection of Basic Data ........................................................................................................... 4
2.5 Table 1 ..................................................................................................................................... 5
3. Inspection Results ................................................................................................................... 6
3.1 Pictures .................................................................................................................................... 7
3.4 Site Map Figure B- Roadworks & drainage plan .................................................................... 10
4. Conclusion .............................................................................................................................. 11
5. Recommendations ................................................................................................................. 11
6. Tree Management & Protection Plan .................................................................................... 12
6.1 Implementation of works ...................................................................................................... 12
6.2 Statutory wildlife obligations: ............................................................................................... 12
6.3 Statutory Requirements ........................................................................................................ 12
6.4 Tree Management Plan and Protection Plan ........................................................................ 12
6.5 Pre-Construction ................................................................................................................... 13
6.6 During Construction .............................................................................................................. 14
6.7 Post Construction .................................................................................................................. 14
6.8 These guidelines are certified, acknowledged and approved by: ......................................... 15
Figure 1 Tree fencing requirements diagram .............................................................................. 16
7. Bibliography .......................................................................................................................... 17
8. Appendix 2 - Explanatory Notes ........................................................................................... 18
9. Appendix 3 – Disclaimer ....................................................................................................... 19
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1. Introduction
1.1 Overview
Wayne Gooch, consulting arborist for Treesafe Australia Pty Ltd. has been asked by Pamela
Davidson, Town Planner for Innovative Planning Solutions, to provide an arborist report on
recommendations regarding tree retention.
1.2Brief
Treesafe Australia Pty Ltd is to inspect, collect data and provide an Arborist Report –confirming
their locations, dimensions, health and sustainability. Also, to identify the suitability and
sustainability for retention in relation to the proposed building works.
1.3 Qualifications and experience
I have based this report on my site observations from ground level and the provided
information. I have experience and qualifications in arboriculture, Diploma of Arboriculture AHC
50510.
1.4 Documents and information provided
The following Documents and information were received by email from Pamela Davidson,
Town Planner, Innovative Planning Solutions on 05/04/2018
1. Council Information Request PDF
2. Revised Site Plan PDF
3. Engineering Report PDF
1.5 Relevant background information
The area is heavily vegetated with native species mainly consisting of Cypress Pine-Callitris
sp. Tuckaroo-Cupaniopsis anacranoides, Hoop Pine-Araucaria cunninghamii. The area is
considered an open wooded coastal community.
An Information Request dated 27 February 2018 has been issued from Sunshine Coast
Council for the following;
18. Provide a preliminary arborist assessment on the likelihood of the retention of these
trees and provide recommendations to ensure the Hoop Pines flourish in a post development
environment.
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2. Site Visit and Observations
2.1 Site Visits
I carried out an initial un-accompanied site visit on 17 April 2018 at 1:30pm.
All of the inspections were performed from ground level without detailed investigation. The
method of inspection performed was a visual tree inspection (VTA).
2.2 Brief Site Description
The total land area is approximately 18,038 square meters with 5,665 square meters of total
area proposed to be developed.
The soil consists of sand and an existing dwelling is situated on the southern area of the lot.
The site has an approximate gradient of 30 degrees running from west to east.
2.3 Identification and location of Vegetation
The trees inspected are 3 Hoop Pines- Araucaria cunninghamii located on the south west
region of the lot.
2.4 Collection of Basic Data
I have inspected the tree from ground level without access to the canopy. The inspection was
a Level 2 Basic Assessment (as per International Society of Arboriculture Guidelines). All
measurements are approximates.
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2.5 Table 1
Tree 1 Tree 2 Tree 3
Species Hoop Pine- Hoop Pine- Hoop Pine-
Araucaria Araucaria Araucaria
cunninghamii cunninghamii cunninghamii
Height
31m 28m 33m
(meters)
Trunk
diameter
(mm) 1000mm Multi-stemmed 900mm
at 1.5m
Canopy
spread
18m 15m 20m
(diameter)
To be Yes Yes Yes
Retained * * *
*See
inspection
results
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3. Inspection Results
Tree 1- Hoop Pine- Araucaria cunninghamii- This tree is a semi mature species, it is Healthy
and vigorous in growth and appearance and is positioned furthest south on the lot.
It has its predominant weight extending towards the south east and is bifurcated with co-
dominant stems dividing at 10 meters with significant weight extending from each stem. The
connection point of this bifurcation is not entirely visible from the ground. The proposed unit
is shown to be positioned entirely outside of its SRZ (structural root zone) A proposed storm
water line is shown to be placed along its northern SRZ with a manhole positioned on its
north west SRZ. This infrastructure is shown in the Preliminary Roadworks and Drainage
Plan to intersect the TPZ (Tree Protection Zone) by approximately 10% but doesn’t show any
intrusion into the SRZ.
Tree 2- Hoop Pine- Araucaria cunninghamii – This tree has a large bifurcated connection
point at the base of the tree with large amounts of reaction wood surrounding this area.
Tree shows good vigour throughout its canopy. The less dominant stem at approximately
10m high on the south east side, has a branch extending from the dominant side and
intersecting/rubbing against its stem which has worn into the stem by approximately fifty
percent leaving a low stem to live wood attachment ratio. There is significant amount of stem
extending beyond this point.
There is a Cypress Pine growing up into its southern canopy which means much of its lower
canopy on this side has not developed.
The Preliminary Roadworks and Drainage Plan show a proposed storm water line to be
positioned within or near to its southern TPZ as well as the proposed driveway within
approximately 2 meters of its north eastern SRZ
Tree 3- Hoop Pine- Araucaria cunninghamii -A Semi mature species with a large open
spreading crown. Many lower limbs are sparse mainly due to lack of necessity for these
lower limbs.
Tree appears to be free from structural flaws and displays a vigorous canopy particularly
dense in the upper sections.
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3.1 Pictures
Picture A–Picture
Tree –Tree
1BThe
Picture Fsingular
2 Thetrunk
–Group included
3. of Bloodwood
The bark at thewith
tree 1. bifurcated
brokenbase
limbs and interfering with the light
post which requires pruning.
Picture C- Tree 2. The compromised, less Picture D- Tree 3. Surrounded by vegetation
dominant stem which has a crossed rubbing including the cypress pine pictured right.
limb.
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Picture E – A view of all three trees which
interact with each other.
Picture F –The 3 Hoop pines extend beyond
all other vegetation.
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3.2 Site Map Figure A
Hoop
Pines
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3.4 Site Map Figure B- Roadworks & drainage plan
Tree 1
Tree 2
Tree 3
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4. Conclusion
On the basis of the above information, discussion and findings, I summarize my conclusions
as follows:
With the current layout of the buildings, driveway and storm water, retention of the three Hoop
pines is viable. The storm water encroaches marginally into the TPZ (tree protection zone) of
Tree 1. The exact layout of the storm water line was not pegged when onsite hence not
knowing the exact intrusion amount into the TPZ.
Tree 2 has the stormwater near or on its SRZ (as per plans, exact layout line is unknown).
Tree 3 appears mainly unaffected by site works.
It should be noted that with clearing of surrounding vegetation the trees will be completely
exposed as well as a potential change in wind shear from surrounding buildings. The trees my
show signs of stress while adapting to the clearing of the surrounding vegetation. If further root
damage occurs then this will further add to the stress and affect their potential for retention.
5. Recommendations
Determine exact position of the storm water infrastructure in relation to the TPZ’s of trees 1
and 2
Remove upper compromised section of Tree 2 to mitigate risk of upper canopy failure.
Provide and implement Tree Protection measures in accordance with Australian Standard
4970 Protection of Trees on Development Sites 2009 (see section 6 Tree Management &
Protection Plan).
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6. Tree Management & Protection Plan
6.1 Implementation of works
All tree works must be carried out to Australian Standards 4373 ‘Pruning of Amenity Trees’
2007. All tree protection measures must be in accordance with Australian Standards 4970
‘Protection of Trees on Development Sites’ 2009. It is necessary that all works be performed
or overseen by a suitably qualified arboriculturalist.
6.2 Statutory wildlife obligations:
A suitably qualified wildlife spotter/catcher should be on hand during any works that may affect
or interfere with wildlife in or around the subject area. Refer to local council regulations. Many
of the Scribbly Gum have hollow structures throughout and may hold various forms of wildlife.
6.3 Statutory Requirements
The remaining trees should be inspected on a regular basis by a qualified arborist. It will be
necessary to consult the council before any removal/pruning works other than certain
exemptions can be carried out. Local council regulations should be checked prior to works.
6.4 Tree Management Plan and Protection Plan
Site address: 27 Attunga Heights, Noosa Heads, Qld 4567
Contractor: -
-
-
- Business:
- Mobile:
Tree Contractor -
-
-
- Business:
- Mobile:
Project Arborist -
-
-
- Business:
- Mobile:
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The following tree protection procedures are to be undertaken during the development of the
site to ensure the safety, health and long term retention of retained trees indentified.
A copy is to be retained on site by the building contractor/civil contractor supervising the
project.
6.5 Pre-Construction
Prior to construction works, a site arborist shall be contracted to supervise all tree protection
procedures detailed in this document. The site arborist is required to have a minimal level 5
AQS qualification in Arboriculture, and a minimum of 5 years experience in tree protection on
building sites. Their details are to be filled in at 6.4
Prior to construction works, a tree contractor shall be contracted to conduct all pruning
operations detailed in this document or instructed to by the site arborist. The tree contractor
must have a minimum level 3 AQF qualification in Arboriculture, and be able to follow AS4373-
2007. Their details are to be filled in at 6.8
Prior to construction works, the site arborist should consult with the construction/civil company
or builder to outline appropriated tree protection methods during construction, to convey the
importance of tree protection.
The builder or construction company is responsible for all tree protection procedures on the
site as per this document whenever the site arborist is not on site. It is the responsibility of the
builder to advise the site arborist of when their presence is required on site or of any breaches
of the tree protection procedures.
Tree Protection Fencing (TPF) where used or designated, is to consist of 1800mm high chain
mesh fencing or similar approved by the site arborist. TPF is to be installed on the trees to be
retained as shown on the plans attached to this arborist report. The construction workers or
subcontractors working on the site are to be informed of tree protection importance by the
contractor.
The site contractor should ensure a protected tree being it’s SRZ does not become a designate
storage, dumping and wash areas that will not impact on the trees during construction.
Any pruning or removal works required including root pruning, shall be carried out by the tree
contactor to AS4373-2007 ‘Pruning of Amenity Trees’
All trees to be removed will be specified by Noosa Council in their Operational Works approval,
as per this arborist report.
At no point should a designated retained tree be removed unless approved by Sunshine Coast
Regional Council. The site arborist is to document reasons for removal and contact council to
organise a site meeting.
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6.6 During Construction
The site arborist shall be present to supervise any excavation, trenching or tunnelling located
on the site that may affect any tree roots, and shall keep a record of works to present to Council
after completion of construction.
There will be no allowed access within the fenced off tree protection zones without the consent
of the site arborist.
6.7 Post Construction
A post construction assessment shall be undertaken by the site arborist to determine the health
and vigour of all retained trees on the site. Any documentation that council may require will be
submitted for review at this time.
The assessment shall include recommendations for any future pruning works or any corrective
arboricultural action to be taken if required.
The site arborist will liaise with the landscape architect and landscaper so as to minimise any
disturbances to the retained trees on the site during landscaping. If at any point landscape
works with the landscaper are identified that may cause damage to the trees, the site arborist
is to work with the landscaper to eliminate detrimental impacts.
Work or construction that is contrary to these guidelines shall make the person responsible or
liable for any damage to any tree.
If the work or construction contrary to these guidelines results in the loss of any tree,
implementation of remedial arboricultural procedures, and / or required removal of any tree,
the person responsible is liable for any cost incurred for these actions, in addition to any fines
imposed by Noosa Council
If this work or construction results in the loss of any tree, a tree valuation (Thyer’s Method
based on the tree condition prior to construction) undertaken by the site arborist will determine
the amount of compensation available to the owner of the property, on and above any other
cost incurred by the responsible person.
At no point are these guidelines finite, and at any time the site arborist may designate additional
procedures or requirements to protect the trees on the site when required.
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6.8 These guidelines are certified, acknowledged and approved by:
Name: Authority: Project Manager
Signed: Date: / / 2018
Name: Authority: Site Arborist
Signed: Date: / / 2018
Contactors are to sign and date below if working near Tree Protection Measures.
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Figure 1 Tree fencing requirements diagram
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7. Bibliography
AS 4373-2007 Pruning of Amenity Trees. Standards Australia
AS 4970 “Protection of Trees on Development Sites’ Standards Australia
Leaf & Limb Horticultural Consultancy; Registered (c) Samuel Cowie; Dip. Arb/Hort
Trees on Building Sites: Dr Gary W Watson, Dr Dan Neely; Published by The International
Society of Arboriculture (c) 1995 All Rights Reserved
Eucalypts of the Sunshine Coast and the Coast from Bundaberg to Coffs Harbour. Tony Bean.
Publisher T. Bean, 1983
S.C.R.C General Land Use and Development Codes, Volume Four, Pages 60 & 61.
Documents all received by email from Pamela Davidson, Town Planner, Innovative Planning
Solutions on 05/04/2018
4. Council Information Request PDF
5. Revised Site Plan PDF
6. Engineering Report PDF
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8. Appendix 2 - Explanatory Notes
• Mathematical abbreviations: > = Greater than; < = Less than.
• Measurements/estimates: All dimensions are estimates unless otherwise indicated.
Measurements taken with a tape or clinometer are indicated with a ‘+’. Less reliable estimated
dimensions are indicated with a '?'.
• Species: The species identification is based on visual observations and the common English
name of what the tree appeared to be is listed first, with the botanical name after in brackets. In some
instances, it may be difficult to quickly and accurately identify a particular tree without further detailed
investigations. Where there is some doubt of the precise species of tree, it is indicate it with a '?' after
the name in order to avoid delay in the production of the report. The botanical name is followed by the
abbreviation sp if only the genus is known. The species listed for groups and hedges represent the
main component and there may be other minor species not listed.
• Height: Height is estimated to the nearest metre.
• Spread: The maximum crown spread is visually estimated to the nearest metre from the furthest
extent of live lateral branches on one side of the canopy to the tips of the live lateral branches on the
opposing side of the canopy.
• Diameter: These figures relate to 1.5m above ground level and are recorded in centimetres. If
appropriate, diameter is measure with a diameter tape. ‘M’ indicates trees or shrubs with multiple
stems.
• Estimated Age: Age is estimated from visual indicators and it should only be taken as a
provisional guide. Age estimates often need to be modified based on further information such as
historical records or local knowledge.
• Distance to Structures: This is estimated to the nearest metre and intended as an indication
rather than a precise measurement.
• Frass: A sawdust like after effect from wood and bark chewing/boring insects.
• Tilth- The loosened effect of soil in the hole walls and floor.
• Epicormic growth: Stress shoots, water shoots, re-growth or suckers. Poorly attached, quick
growing.
• SRZ: Structural Root Zone
• TPF: Temporary Protection Fencing
• Adventitious shoots: A branch arising from a stem or parent branch having no connection to apical
meristems.
• SRZ: Structural Root Zone
• CRZ: Critical Root Zone
• Basic VTA: Detailed visual inspection of a tree & surrounding site that may include the use of simple
tools. It requires that a tree risk assessor walk completely around the tree trunk looking at the site,
above ground roots, trunk & branches.
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9. Appendix 3 – Disclaimer
All care has been taken to obtain information from sources which by all means are reliable. All
information and data has been verified as far as possible. However Treesafe Australia Pty Ltd cannot
guarantee nor be responsible for the accuracy of information provided by others.
Unless stated otherwise:
• Information contained in this report covers only the trees that were inspected and reflects the
conditions of the trees at the time of inspection.
• The inspection was limited to the visual examination of the subject tree without drilling, coring,
probing, x-ray imaging, excavation, dissection or any other tool or method unless stated within this
report.
• There is no warranty or guarantee, expressed or implied, that any issues, problems faults, failures
or deficiencies of the subject tree(s) may not arise in neither the present nor the future.
Treesafe Australia Pty Ltd reserves the right to forward a copy in full of this report to any local, state, or
federal government body or regulatory authority that may request this report for the assistance in making
an informed assessment of the trees on site.
This report has been prepared for the exclusive use of the client and Treesafe Australia Pty Ltd accepts
no responsibility for its use by other persons or organizations. The client/approved recipient of this report
acknowledges that this report and any options, opinions, advice, or recommendations expressed or
given in this report are based on the information supplied by the client and on the data inspections,
measurements and analysis carried out or obtained by Treesafe Australia Pty ltd. and referred to in this
report. The client/approved recipient should only rely on this report and on its contents only to that extent.
Wayne Gooch,
Consulting Arborist
Dip Arb,
TRAQ.QUAL.
MQAA,
MAA
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