View
3
Download
0
Category
Preview:
Citation preview
PO Box 364, BEROWRA NSW 2081
Ph: (02) 9456 4787 Mobile: 0402 947 296 Fax: (02) 9456 5757 Email: earthscape@iinet.net.au
EARTHSCAPE HORTICULTURAL SERVICES Arboricultural, Horticultural and Landscape Consultants
ABN 36 082 126 027 _________________________________________________________
ARBORICULTURAL IMPACT ASSESSMENT REPORT
PROPOSED 7U5 FEEDER
SURRY HILLS
March 2019
Prepared for: Transport for NSW Level 5, Tower A, Zenith Centre, 821 Pacific Highway CHATSWOOD NSW 2067 Ph:- 02 8076 5950
Prepared by: Andrew Morton Dip. (Arboriculture) [AQF Level 5] B. App. Sci. (Horticulture) A. Dip. App. Sci. (Landscape)
EARTHSCAPE HORTICULTURAL SERVICES
Ph: - 0402 947 296 Member of Arboriculture Australia Member International Society of Arboriculture - Australian Chapter (ISAAC) Member Local Government Tree Resources Association (LGTRA)
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 2 SURRY HILLS Version 4 – 19th March 2019
TABLE OF CONTENTS
1 INTRODUCTION .................................................................................................................................................. 3 2 THE SITE............................................................................................................................................................... 3 3 SUBJECT TREES .................................................................................................................................................. 3 4 HEALTH AND CONDITION ASSESSMENT ..................................................................................................... 4
4.1 Methodology ................................................................................................................................................. 4 4.2 Safe Useful Life Expectancy (SULE) ............................................................................................................ 4
5 LANDSCAPE SIGNIFICANCE ............................................................................................................................ 5 5.1 Methodology for Determining Landscape Significance ................................................................................ 5 5.2 Environmental Significance .......................................................................................................................... 5 5.3 Heritage Significance .................................................................................................................................... 6 5.4 Amenity Value............................................................................................................................................... 6
6 TREE RETENTION VALUES .............................................................................................................................. 6 7 TREE PROTECTION ZONES .............................................................................................................................. 8
7.2 Structural Root Zone (SRZ) .......................................................................................................................... 8 7.3 Acceptable Encroachments to the Tree Protection Zone. .............................................................................. 8 7.4 Acceptable Encroachments to the Canopy .................................................................................................... 8
8 PROPOSED DEVELOPMENT ............................................................................................................................. 8 9 IMPACT ASSESSMENT ...................................................................................................................................... 9 10 RECOMMENDED TREE PROTECTION MEASURES .................................................................................... 12
10.1 Tree Protection Plan .................................................................................................................................... 12 10.2 Prohibited Activities .................................................................................................................................... 12 10.3 Tree Protection Fencing............................................................................................................................... 13 10.4 Trunk Protection .......................................................................................................................................... 14 10.5 Demolition Works within Tree Protection Zones ........................................................................................ 14 10.6 Excavations within Tree Protection Zones .................................................................................................. 15 10.7 Underground Services ................................................................................................................................. 15 10.8 Canopy & Root Pruning .............................................................................................................................. 16 10.9 Tree Damage ............................................................................................................................................... 16 10.10 Tree Removal .............................................................................................................................................. 16 10.11 Ground Protection ....................................................................................................................................... 16
11 REPLACEMENT PLANTING ............................................................................................................................ 17 12 REFERENCES ..................................................................................................................................................... 19 APPENDIX 1 - CRITERIA FOR ASSESSMENT OF LANDSCAPE SIGNIFICANCE ............................................ 20 APPENDIX 2 – ACCEPTABLE INCURSIONS TO THE TREE PROTECTION ZONE (TPZ) ................................ 21 APPENDIX 3 – TREE HEALTH AND CONDITION ASSESSMENT SCHEDULE
APPENDIX 4 – IMPACT ASSESSMENT SCHEDULE
APPENDIX 5 – TREE LOCATION PLAN SHOWING RETENTION VALUES
APPENDIX 6 – TREE PROTECTION PLAN
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 3 SURRY HILLS Version 4 – 19th March 2019
1 INTRODUCTION
1.1.1 This report was commissioned by Transport for NSW (TfNSW) to assess the health and condition
of sixty-three (63) trees located along the route of a proposed 33kV Feeder (known as Feeder 7U5)
extending from the Ausgrid Ann Street Substation, to the Chalmers Street Substation, Surry Hills.
The report has been prepared to aid in the assessment of a Review of Environmental Factors (REF)
for installation of the 7U5 Feeder and associated Early Works.
1.1.2 The purpose of this report is to assess the potential impact of the proposed development on the
subject trees, together with recommendations for amendments to the design or construction
methodology where necessary to minimise any adverse impact. The report also provides
recommended tree protection measures to ensure the long-term preservation of the trees to be
retained where appropriate.
1.1.3 This report has been prepared in accordance with the City of Sydney Council’s guidelines for
preparation of Arborists Reports as outlined in Schedule 8 of the Sydney Development Control
Plan 2012 (SDCP) and Sections 2.3.2-2.3.5 of the Australian Standard for Protection of Trees on
Development Sites (AS 4970:2009).
2 THE SITE
2.1.1 The first section of the Feeder 7U5 route to be installed by open trenching commences at the
Ausgrid Substation in Ann Street, Surry Hills and extends in a westerly direction along Ann Street,
south along Commonwealth Street, west along Albion Street and south along Elizabeth Street to
the intersection with Chalmers Street. The remaining section (between this point and the Chalmers
Street Substation) will be installed above ground within the railway corridor within Galvanised
Steel Troughing (GST) (refer to Figure 1). A number of mature and semi-mature street trees stand
along the first section of the route. These include a variety of non-local native and exotic
(introduced) species.
2.1.2 Soils of this area have been extensively disturbed and modified for urban development. The
original soils of this area are typical of the Blacktown Soil Landscape Group (as classified in the
Soil Landscapes of the Sydney 1:100,000 Sheet), consisting of shallow to moderately deep (less
than 1000 mm) Red & Brown Podzolic Soils on crests, upper slopes and well drained areas. Soils
on lower slopes and areas of poor drainage consist of deep (1500-3000 mm) Yellow Podzolic Soils
and Soloth Soils derived Wianamatta Group & Hawkesbury Shales.1 The landscape generally
consists of undulating rises with slopes ranging usually less than 5% grade.
2.1.3 The original vegetation of this area has been completely removed for urban development. The
original vegetation community of this area was classified as Turpentine-Ironbark Forest, most of
which was cleared for urban development from early in the nineteenth century.2 The dominant
locally-indigenous tree species formerly found in this area included Syncarpia glomulifera
(Turpentine) and Eucalyptus paniculata (Grey Ironbark). Other species occurring in this
vegetation community may include Eucalyptus pilularis (Blackbutt), Angophora costata (Sydney
Red Gum), Eucalyptus resinifera (Red Mahogany), Eucalyptus tereticornis (Forest Red Gum),
Eucalyptus longifolia (Woollybutt) and Eucalyptus globoidea (White Stringybark). There are no
remnant locally indigenous trees remaining within the site.
3 SUBJECT TREES
3.1.1 The subject trees were inspected by Earthscape Horticultural Services (EHS) on the 8th January
2019. Each tree has been provided with an identification number for reference purposes denoted
on the attached Tree Location Plan (Appendix 5), based on aerial imagery from NearMap. The
numbers used on this plan correlate with the Tree Assessment Schedule (Appendix 3).
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 4 SURRY HILLS Version 4 – 19th March 2019
4 HEALTH AND CONDITION ASSESSMENT
4.1 Methodology
4.1.1 An assessment of each tree was made using the Visual Tree Assessment (VTA) procedure.3 All of
the trees were assessed in view from the ground. No aerial inspection or diagnostic testing has
been undertaken as part of this assessment.
4.1.2 The following information was collected for each tree:-
• Tree Species (Botanical & Common Name);
• Approximate height;
• Canopy spread; measured using a metric tape and an average taken.
• Trunk diameter (measured at 1.4 metres from ground level);
• Live Crown Size; (measured by subtracting the total height of the tree from the lowest point
of the crown and multiplying by the average crown spread to give a value in square metres).
• Health & vigour; using foliage size, colour, extension growth, presence of disease or pest
infestation, canopy density, presence of deadwood, dieback and epicormic growth as
indicators,
• Condition; using visible evidence of structural defects, instability, evidence of previous
pruning and physical damage as indicators.
• Suitability of the tree to the site and its existing location; in consideration of damage or
potential damage to services or structures, available space for future development and
nuisance issues.
4.1.3 This information is presented in a tabulated form in Appendix 3.
4.2 Safe Useful Life Expectancy (SULE)
4.2.1 The remaining Safe Useful Life Expectancy4 of the tree is an estimate of the sustainability of the
tree in the landscape, calculated based on an estimate of the average age of the species in an urban
area, less its estimated current age. The life expectancy of the tree has been further modified where
necessary in consideration of its current health and vigour, condition and suitability to the site. The
estimated SULE of each tree is shown in Appendix 3.
4.2.2 The following ranges have been allocated to each tree:-
• Greater than 40 years (Long)
• Between 15 and 40 years (Medium)
• Between 5 and 15 years (Short)
• Less than 5 years (Transient)
• Dead or immediately hazardous (defective or unstable)
4.2.1 SULE ratings are intended to provide a general overview of the long term sustainability of the
trees within the site in consideration of these factors. The allocated ranges are not intended to be
absolute. This information is useful in guiding future planning by highlighting the probable
lifespan of individual trees, for which a clear pattern may emerge. This information may be helpful
in forecasting likely tree senescence and planning for replacement planting to ensure continuity in
tree canopy across the site. It should be noted that SULEs may be extended or reduced depending
on the way trees are managed. Intervention and remedial works may extend the SULE of some
trees.
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 5 SURRY HILLS Version 4 – 19th March 2019
5 LANDSCAPE SIGNIFICANCE
5.1 Methodology for Determining Landscape Significance
5.1.1 The significance of a tree in the landscape is a combination of its environmental, heritage and
amenity values. Whilst these values may be fairly subjective and difficult to assess consistently,
some measure is necessary to assist in determining the retention value of each tree. To ensure a
consistent approach, the assessment criteria shown in Appendix 1 have been used in this
assessment.
5.1.2 A rating has been applied to each tree to give an understanding of the relative significance of each
tree in the landscape and to assist in determining priorities for retention, in accordance with the
following categories:-
1. Significant
2. Very High
3. High
4. Moderate
5. Low
6. Very Low
7. Insignificant
5.2 Environmental Significance
5.2.1 Tree Management Controls
Prescribed trees within the City of Sydney Local Government Area (LGA) are protected under
Section 3.5.3 of the Sydney Development Control Plan 2012 (SDCP), made pursuant to Clause 9
of the State Environmental Planning Policy (Vegetation in Non-rural Areas) 2017 (SEPP VNRA).
The SDCP generally protects all trees of a height of five (5) metres or greater or with a canopy
spread of five (5) metres or greater, or trunk diameter of 300mm or greater (measured at ground
level) or any tree listed on Council’s Significant Tree Register and any tree on public land. Some
exemptions apply, however, all of the subject trees are protected under the provisions of the SDCP
2016, being located on public land. Note that consent from Council is not required for the removal
of any trees to execute the works in this instance given that the environmental impact assessment
will be conducted under the provisions of Division 5.1 of the Environmental Planning and
Assessment Act 1979 (EP&A Act).
5.2.2 Wildlife Habitat
All of the trees are exotic (introduced) or non-local native species that would be of some benefit to
native wildlife. However, none of the trees contain cavities that would be suitable as nesting
hollows for arboreal mammals or birds. There were no other visible signs of wildlife habitation.
5.2.3 Noxious Plants & Environmental Weeds
None of the subject trees are scheduled as a potential ‘Biosecurity Risk’ (‘Priority Weed’ –
formerly ‘Noxious Weed’) within NSW under the provisions of the Biosecurity Act 2015.
5.2.4 Threatened Species & Ecological Communities
None of the subject trees are listed as Threatened or Vulnerable Species or form part of
Endangered Ecological Communities (EECs) under the provisions of the Biodiversity
Conservation Act 2016 (NSW) or the Environment Protection and Biodiversity Conservation Act
1999.
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 6 SURRY HILLS Version 4 – 19th March 2019
5.3 Heritage Significance
5.3.1 Heritage Items
The Central Railway Station Group, including buildings, station yard, viaducts and building
interiors, is listed as an item of Environmental Heritage [Item 824] under Schedule 5, Part 1 of the
Sydney Local Environmental Plan (SLEP) 2012. Note that this includes the small park on the
corner of Eddy Avenue and Chalmers Street, adjacent the railway viaduct. Trees T58-T63 are
located within this Park (refer Section 5.3.4).
The triangular strip of land on the western side of Elizabeth Street (between the intersections of
Eddy Avenue and Hay Street) is also listed as an item of Environmental Heritage [Item 825] under
Schedule 5, Part 1 of the SLEP 2012, forming part of the listing for Belmore Park. Trees T50 –
T57 (predominantly Plane trees) are located within this area of land (refer Section 5.3.3).
5.3.2 Heritage Conservation Area
Ann Street, Commonwealth Street and the northern side of Albion Street (between the
intersections of Mary Street and Crown Street) are located within a Heritage Conservation Area
[Area C66 – Reservoir Street and Fosterville] under Schedule 5, Part 2 of the SLEP 2012. Trees T1
– T30 are located within this area.
The southern side of Albion Street (between the intersections of Mary Street to Crown Street) is
also located within a Heritage Conservation Area [Area C58 – Albion Estate] under Schedule 5,
Part 2 of the SLEP 2012. None of the subject trees are located within this area.
5.3.3 Significant Tree Register
Trees T50, T54 & T56 (Oriental Plane tree) and T51 & T53 (London Plane tree) form part of a
larger row of seven (7) large Plane trees and a number of smaller (replacement) Plane trees located
on the western side of Elizabeth Street (between the intersections of Eddy Avenue and Hay Street)
that are listed on Council’s Register of Significant Trees Volume 2 (Significant Street Trees).5 The
larger trees in this group are believed to be a similar vintage to those planted within Belmore Park
(on the western side of the railway viaduct) which are thought to have been planted c. 1900-1920.
The group makes a significant contribution to the visual amenity of the streetscape and is of
outstanding aesthetic and cultural value. T63 (Oriental Plane) on the southern side of Eddy Avenue
forms a continuation of this row, but is not specifically mentioned in this listing.
5.3.4 General
Trees T58 & T59 [Phoenix sylvestris (Silver Date Palm)] are of a similar vintage to those of
similar species planted at the northern end of nearby Prince Alfred Park, which are thought to have
been planted in the Inter-War Period (1919-1939).
None of the other trees have any known or suspected heritage significance.
5.4 Amenity Value
5.4.1 Criteria for the assessment of amenity values are incorporated into Appendix 1. The amenity value
of a tree is a measure of its live crown size, visual appearance (form, habit, crown density),
visibility and position in the landscape and contribution to the visual character of an area.
Generally the larger and more prominently located the tree, and the better its form and habit, the
higher its amenity value.
6 TREE RETENTION VALUES
6.1.1 The Retention Values shown in Appendix 3 and Appendix 5 have been determined on the basis
of the estimated longevity of the trees and their landscape significance rating, in accordance with
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 7 SURRY HILLS Version 4 – 19th March 2019
Table 1. Together with guidelines contained in Section 7 (Tree Protection Zones) this information
should be used to determine the most appropriate position of building footprints and other
infrastructure within the site, with due consideration to other site constraints, to minimise the
impact on trees considered worthy of preservation.
TABLE 1 – TREE RETENTION VALUES – ASSESSMENT METHODOLOGY
Landscape Significance Rating
Estimated Life 1 2 3 4 5 6 7
Expectancy
Long - Greater than High Retention Value
40 Years
Medium- Moderate Retention
15 to 40 Years Value Short -
Low Ret. Value 5 to 15 years
Transient - Less Very Low Retention Value
than 5 Years
Dead or Potentially
Hazardous
6.1.2 The following table describes the implications of the retention values on site layout and design.
TABLE 2 – TREE RETENTION PRIORITES.
RETENTION
VALUE RECOMMENDED ACTION
“High”
These trees considered worthy of preservation; as such careful consideration should be
given to their retention as a priority.
Proposed site design and placement of buildings and infrastructure should consider the
recommended setbacks as discussed in the following section (refer also Appendix 2) to
avoid any adverse impact on these trees.
In addition to Tree Protection Zones, the extent of the canopy (canopy drip-line) should
also be considered, particularly in relation to high rise developments. Significant pruning
of the trees to accommodate the building envelope or temporary scaffolding is generally
not acceptable.
“Moderate”
The retention of these trees is desirable, but not essential.
These trees should be retained as part of any proposed development if possible. However,
these trees are considered less critical for retention.
If these trees must be removed, replacement planting should be considered in accordance
with Council’s Tree Replenishment Policy to compensate for loss of amenity (refer also
Section 9).
“Low”
These trees are not considered to worthy of any special measures to ensure their
preservation, due to current health, condition or suitability. They do not have any special
ecological, heritage or amenity value, or these values are substantially diminished due to
their SULE.
These trees should not be considered as a constraint to the future development of the site.
“Very Low”
These trees are considered potentially hazardous or very poor specimens, or may be
environmental or noxious weeds.
The removal of these trees is therefore recommended regardless of the implications of any
proposed development.
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 8 SURRY HILLS Version 4 – 19th March 2019
7 TREE PROTECTION ZONES
7.1.1 The Tree Protection Zone (TPZ) is a radial distance measured from the centre of the trunk of the
tree as specified in Appendix 4. These have been calculated in accordance with AS 4970-2009
(Protection of Trees on Development Sites).6
7.1.2 The intention of the TPZ is to ensure protection of the root system and canopy from the potential
damage from construction works and ensure the long-term health and stability of each tree to be
retained. Incursions to the root zone may occur due to excavations, changes in ground levels,
(either lowering or raising the grade), trenching or other forms or soil disturbance such as ripping,
grading or inverting the soil profile. Such works may cause damage or loss of part of the root
system, leading to an adverse impact on the tree.
7.2 Structural Root Zone (SRZ)
7.2.1 The Structural Root Zone (SRZ) provides the bulk of mechanical support and anchorage for a tree.
This is also a radial distance measured from the centre of the trunk as specified in Appendix 4.
The SRZ has been calculated in accordance with AS 4970-2009 (Protection of Trees on
Development Sites).
7.2.2 Incursions within the SRZ are not recommended as they are likely to result in the severance of
woody roots which may compromise the stability of the tree or lead to its decline and demise.
7.3 Acceptable Encroachments to the Tree Protection Zone.
7.3.1 Where encroachment to the TPZ is unavoidable, an incursion to the TPZ of not exceeding 10% of
the area of the TPZ and outside the SRZ may be acceptable. Examples of acceptable incursions are
shown in Appendix 2. Greater incursions to the TPZ may result in an adverse impact on the tree.
7.3.2 Where incursions greater than 10% of the TPZ are unavoidable, exploratory excavation using non-
destructive methods may be required to evaluate the extent of the root system affected and
determine whether or not the tree can remain viable
7.4 Acceptable Encroachments to the Canopy
7.4.1 The removal of a small portion of the crown (foliage and branches) is generally tolerable provided
that the extent of pruning required is less than 10% of the total foliage volume of the tree and the
removal of branches does not create large wounds or disfigure the natural form and habit of the
tree. All pruning cuts must be undertaken in accordance with AS 4373:2007. This generally
involves reduction of the affected branches back to the nearest branch collar at the junction with
the parent branch, rather than at an intermediate point. The latter is referred to as “lopping” and is
no longer an acceptable arboricultural practice. Generally speaking, the minimum pruning as
required to accommodate any proposed works is desirable. Extensive pruning can result in a
detrimental impact on tree health and may lead to exposure of remaining branches to wind forces
that they were previously sheltered from, leading to a greater risk of branch failure.
8 PROPOSED DEVELOPMENT
8.1.1 The proposed development includes the installation of a new 33kV Feeder between the Ausgrid
Substation in Ann Street, Surry Hills and the Chalmers Street Substation in order to increase the
rail network power capacity as part of a planned Power Supply Upgrade (PSU). The first section of
the cabling (between the Ann Street Substation and the intersection of Eddy Avenue and Chalmers
Street) is proposed to be installed by open trenching as part of a Combined Services Route (CSR).
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 9 SURRY HILLS Version 4 – 19th March 2019
The remaining section along the railway corridor to the Chalmers Street Substation is proposed to
be installed above ground within Galvanised Steel Troughing (GST) [an above ground cable tray
system], as indicated in Figure 1. The cable trench for the Feeder will be approximately 1 metre
wide and 1.5 metres deep. Options for installing parts of the Feeder by Horizontal Directional
Drilling (HDD) [sub-surface boring] are currently being considered, subject to the constraints
imposed by existing underground services, to be determined subject to further investigation
(services detection).
Figure 1 - Showing the proposed location of Feeder 7U5.
9 IMPACT ASSESSMENT
9.1.1 The intention of this assessment is to determine the incursions to the root zones and canopies
created by the proposed development and evaluate the likely impact of the proposed works on the
subject trees. Details shown on the following plans were used in this assessment:-
Title Author Dwg No. Date
33kV Feeder 7U5 –
Typical Electrical Pit Aurecon Civil
FDR7U5-NOVO-CV-
07156676 [1] 05/03/2019
33kV Feeder 7U5 –
Sections and Details Aurecon Civil
FDR7U5-NOVO-HV-
07156828 [1] 05/03/2019
33kV Feeder 7U5 - Plans Aurecon Civil FDR7U5-NOVO-HV-
07156816 [1] 05/03/2019
9.1.2 A summary of the impact of the proposed development on each tree within the site is shown in
Appendix 5. The following criteria have been examined as part of this assessment:-
• Existing Relative Levels (R.L.);
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 10 SURRY HILLS Version 4 – 19th March 2019
• Tree Protection Zone (TPZ);
• Structural Root Zone (SRZ);
• Footprint and envelope of the proposed development and temporary structures (scaffolding,
hoardings etc);
• Incursions to the TPZ & SRZ, including estimated cut & fill beyond the building footprint;
• Incursions to the tree canopy from the building envelope and temporary structures; and
• Assessment of the likely impact of the works on existing trees.
9.1.3 The proposed development will necessitate the removal of three (3) trees of low and very low
retention value. These include Tree No.s T60, T61 & T62 (European Olive). None of these trees
are considered significant or worthy of special measures to ensure their preservation. The removal
of these trees to accommodate the proposed development is therefore considered warranted in this
instance.
9.1.4 The proposed development is also likely to necessitate the removal of one (1) tree of moderate
retention value, being T57 (Illawarra Flame tree). This tree has no special heritage or ecological
significance, but is in good health and condition and makes a fair contribution to the amenity of
the site and streetscape. The potential removal of this tree will be dependant on the final position
of the entry/exit pit associated with underboring beneath Eddy Avenue. The position of the entry
pit may be limited by a number of other constraints. This tree should be maintained if possible.
Once the final bore entry pit is determined, exploratory excavation should be undertaken to
determine the potential impact on the root system of T57. Following exploratory excavation, a
final determination should be made by an arborist as to whether the tree can be retained or must be
removed. If there is no other alternative to removal of this tree, replacement planting with a new
tree should be undertaken following completion of the work in accordance with Section 11.
9.1.5 The proposed development is also likely to necessitate the removal of one (1) tree of high retention
value, being T63 (London Plane). This tree is in good health and condition and makes a positive
contribution to the amenity of the site and streetscape. The tree forms a continuation of the row of
London Planes in Elizabeth Street, which are listed on Council’s Significant Tree Register. It is
understood that the removal of this tree may be required to facilitate construction access to the
work zone in the park on the corner of Eddy Avenue and Elizabeth Street. It is understood that due
to construction of the Light Rail Project adjacent the site and the existing heritage listed wall,
alternatives for access are heavily constrained. Consideration should be given to the retention of
this tree by investigating alternative options for access to this area. If no feasible options exist and
removal is the only alternative, replacement planting should be undertaken with a super advanced
specimen (minimum 1000 litre container size) of the same species in a similar location following
completion of the works in accordance with Section 11.
9.1.1 The proposed development may also necessitate the removal of one (1) tree of high retention
value, being T58 (Silver Date Palm). This tree is in good health and condition and makes a
positive contribution to the amenity of the site and streetscape. The tree has no documented
heritage significance, but it is a similar vintage to those in nearby Prince Alfred Park thought to
have been planted in the Inter-War Period. It is understood that the removal of this tree may be
required to facilitate installation of an underbore entry/exit pit in the park on the corner of Eddy
Avenue and Elizabeth Street. Removal of this tree would have an unacceptable impact on the
heritage values of the place. However, this species is considered horticulturally feasible to
transplant, assuming the work is undertaken in accordance with current best practice and assuming
adequate aftercare is given. If no feasible options exist and removal is the only alternative,
transplanting of this tree shall be undertaken in accordance with a suitable transplanting
specification prepared by a qualified arborist [AQF Level 5]. An assessment of the logistical
feasibility of transplanting should be undertaken by a practicing tree transplant contractor.
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 11 SURRY HILLS Version 4 – 19th March 2019
9.1.2 The proposed 33kV Feeder is located within the TPZs of Trees T6, T18, T19, T20 (Chinese
Pistachio), T16 (Avocado tree), T17, T23, T27 & T28 (Broadleaved Paperbark), T32 (Brushbox,
T33, T36, T37, T38, T39, T40, T41, T42, T51 & T53 (London Plane), T50, T54 & T56 (Oriental
Plane), T57 (Illawarra Flame), T58 & T59 (Silver Date Palm). In the case of Trees T18, T19, T23,
T27, T28, T32, T36, T50, T53, T54 & T56, Open trenching to facilitate the installation of the
cables will result in an encroachment to the root zones of less than 10% of the TPZ, which is
considered within acceptable limits under AS 4970:2009. As such, the proposed works will not
result in any adverse impact on these trees.
9.1.3 In the case of Trees T16 (19%), T33 (13%), T37 (15%), T57 (17%), T58 (17%), T59 (11%) the
extent of the encroachment from the cable trench is between 10% and 20% of the TPZ, which
exceeds acceptable limits under AS 4970:2009. However, these trees will tolerate the extent of the
encroachment proposed, provided that all open trenching within the TPZs is undertaken in
accordance with Section 10.6.
9.1.4 In the case of Trees T6 (30%), T17 (25%), T20 (25%), T38 (27%), T39 (23%), T40 (22%), T41
(26%), the extent of the encroachment from the cable trench is between 20% and 30% of the TPZ,
which exceeds acceptable limits under AS 4970:2009. As conditions for root growth beneath the
existing road pavement are expected to be poor, the occurrence of potentially conflicting roots is
difficult to determine without exploratory excavation and root mapping. However, assuming that
the roots do extend beneath the pavement, this extent of incursion to the root zone has the potential
to result in severance and damage to woody roots, which may result in an adverse impact on these
trees. Given the nature of the trench and backfill, the only way to mitigate adverse impact (should
woody roots be encountered during excavation), would be to relocate the trench alignment further
away from the trees. Desirably the extent of encroachment for these species should not exceed
20% of the TPZ. In order to minimise any adverse impact on these trees, all excavations for the
cable trench within the TPZs of these trees should be undertaken in accordance with Section 10.6
and any required root pruning should be undertaken in accordance with Section 10.10. Where
significant root pruning is determined to be required (following exploratory excavation), further
assessment of the potential impact on the health and stability of the trees should be made by a
qualified consulting arborist. If there is no other alternative to removal of these trees, replacement
planting with a new trees should be undertaken following completion of the work in accordance
with Section 11.
9.1.5 In the case of Trees T42 (32%) and T51 (38%) the extent of the encroachment from the cable
trench is between 30% and 40% of the TPZ, which exceeds acceptable limits under AS 4970:2009.
This extent of incursion to the root zone has the potential to result in severance and damage to
woody roots, which may result in an adverse impact on these trees. It is understood that Horizontal
Directional Drilling has been considered as an alternative to open trenching in these areas but is
not considered feasible. Given the nature of the trench and backfill, the only way to mitigate
adverse impact (should woody roots be encountered during excavation, would be to relocate the
trench alignment further away from the trees. Desirably the extent of encroachment for these
species should not exceed 20% of the TPZ. It is understood that Horizontal Directional Drilling
has been considered as an alternative to open trenching in these areas but is not considered
feasible. In order to minimise any adverse impact on these trees, all excavations for the cable
trench within the TPZs of these trees should be undertaken in accordance with Section 10.6 and
any required root pruning should be undertaken in accordance with Section 10.10. Where
significant root pruning is determined to be required (following exploratory excavation), further
assessment of the potential impact on the health and stability of the trees should be made by a
qualified consulting arborist. If there is no other alternative to removal of these trees, replacement
planting with a new trees should be undertaken following completion of the work in accordance
with Section 11.
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 12 SURRY HILLS Version 4 – 19th March 2019
9.1.6 Trees T6 & T20 (Chinese Pistachio), T37, T42, T51 & T53 (London Plane) and T57 (Illawarra
Flame tree) may require canopy pruning (‘crown lifting’) to facilitate excavation of the cable
trench, installation of temporary shoring and installation of conduits. In the case of trees T42, T51,
T53 & T57 the extent of canopy loss is estimated at 10-15% of the crown volume and will mainly
be limited to lower and descending secondary and tertiary branches. This extent of canopy loss is
considered within acceptable limits under AS 4373:2007. The required pruning will not result in
any adverse impact on these trees, provided that all such pruning (that essential to provide
adequate clearance for plant and equipment involved in trenching shoring and installation of
conduits) is undertaken in accordance with Section 10.10.
9.1.7 In the case of Trees T6, T20 & T37 the extent of pruning likely to be required to achieve
reasonable overhead clearance will result in between 20% to 30% crown loss, which exceeds
acceptable limits under AS 4373:2007. This extent of pruning may result in some adverse impact
on these trees. In order to minimise any adverse impact, all required canopy pruning (that essential
to provide adequate clearance for plant and equipment involved in trenching shoring and
installation of conduits) should be undertaken in accordance with Section 10.10.
9.1.8 No other trees will be adversely affected by the proposed development.
10 RECOMMENDED TREE PROTECTION MEASURES
10.1 Tree Protection Plan
10.1.1 The following Tree Protection Measures should be read in accordance with the Tree Protection
Plan (Appendix 6). The Tree Protection Plan (TPP) indicates the position of tree protection
devices and other recommended measures to ensure the protection of trees within the site to be
retained as part of the proposed development.
10.2 Prohibited Activities
10.2.1 The following activities should be avoided within specified Tree Protection Zones (refer
Appendix 4 & 6 for extent of the TPZ for each tree):-
• Excavations and trenching (with exception of the approved remediation works, underground
services, building foundations or pavement sub-grade);
• Soil disturbance, surface grading, compaction, tyning, ripping or cultivation of soil;
• Mechanical removal of vegetation, including extraction of tree stumps;
• Soil level changes including the placement of fill material (excluding imported validated fill
for remediation works or placement of fill for approved works)
• Movement and storage of plant, equipment & vehicles (except within defined temporary haul
roads, where ground protection has been installed, or within the footprint of existing floor
slabs or paved areas);
• Erection of site sheds (except where approved by the site arborist);
• Affixing of signage, barricades or hoardings to trees;
• Storage of building materials, waste and waste receptacles;
• Stockpiling of spoil or fill;
• Stockpiling of bulk materials, such as soil, sand, gravel, roadbase or the like;
• Stockpiling of demolition waste;
• Disposal of waste materials and chemicals including paint, solvents, cement slurry, fuel, oil
and other toxic liquids;
• Other physical damage to the trunk or root system; and
• Any other activity likely to cause damage to the tree.
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 13 SURRY HILLS Version 4 – 19th March 2019
10.3 Tree Protection Fencing
10.3.1 Trees [T51, T52, T53, T54, T56, T57, T58 & T59] shall be protected prior to and during
construction from all activities that may result in detrimental impact by erecting a suitable
protective fence in the positions as indicated on the Tree Protection Plan (Appendix 6). As a
minimum, the fence shall consist of temporary chain wire panels of 1.8 metres in height, supported
by steel stakes as required and fastened together and supported to prevent sideways movement
using corner braces where required. The fence shall be erected prior to the commencement of any
work on-site and shall be maintained in good condition for the duration of construction. Where
tree protection zones merge together a single fence encompassing the area is deemed to be
adequate. Existing site boundary fences may form part of the enclosure.
10.3.2 Appropriate signage shall be installed on the fencing to prevent unauthorised movement of plant
and equipment or entry to the Tree Protection Zone.
Figure 1 – Detail of Tree Protection Fence
10.3.3 Signs shall be installed on the Tree Protection Fence to prevent
unauthorised movement of plant and equipment or entry to the Tree
Protection Zone. The signs shall be securely attached to the fence using
cable ties or equivalent. Signs shall be placed at minimum 10 metre
intervals. The wording and layout of the sign shall comply with AS 4970-
2009 as shown in Figure 2.
.
Figure 2 – Detail of Tree Protection Sign
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 14 SURRY HILLS Version 4 – 19th March 2019
10.4 Trunk Protection
10.4.1 Trunk protection boarding shall be erected around Trees [T38, T39, T40, T41 & T42] to avoid
accidental damage, as indicated on the Tree Protection Plan (Appendix 6). The trunk protection
shall consist of a layer of carpet underfelt (or similar) wrapped around the trunk, followed by 1.8
metre lengths of softwood timbers (90 x 45mm in section) aligned vertically and spaced evenly
around the trunk at 150mm centres (i.e. with a 50mm gap) and secured together with 2mm
galvanised wire or galvanised hoop strap as shown in Figure 3. Recycled timber (such as
demolition waste) may be suitable for this purpose, subject to the approval of the Project Arborist.
The timbers shall be wrapped around the trunk (over the carpet underfelt), but not fixed to the tree
to avoid mechanical injury or damage to the trunk. Trunk protection should be installed prior to
any site works and maintained in good condition for the duration of the construction period. Carpet
underfelt (alone) is sufficient for trees with a trunk diameter of less than 200mm. This shall be
wrapped around the trunk in a double layer and held in place with heavy-duty fibre reinforced
adhesive tape (e.g. Gaffer Tape).
Figure 3 – Detail of Trunk Protection
10.5 Demolition Works within Tree Protection Zones
10.5.1 Demolition of paved areas within the Tree Protection Zones (TPZs) of trees [all trees nominated
for retention] shall be undertaken under the supervision of a qualified Arborist [Australian
Qualification Framework (AQF) Level 5].
10.5.1 Concrete pavements shall be demolished by breaking the slab into manageable sections (using a
rock hammer or similar) and asphalt pavements shall be removed by breaking the topcoat into
manageable pieces. The broken sections shall be carefully lifted and folded over the remaining
paved surface to minimise disturbance and compaction of the underlying soil profile. Special care
shall be taken where underlying woody roots have lifted or displaced the pavement. Any plant or
equipment used in demolition work shall operate within the footprint of existing paved areas and
avoid traversing soft landscape areas. Where this is unavoidable, suitable ground protection shall
first be installed in accordance with Section 10.14.
10.5.2 The pavement sub-base within the TPZ shall be gradually removed (where required) in layers of
no greater than 50mm thick using a small rubber tracked excavator or alternative approved method
to avoid excessive disturbance and compaction of the underlying soil profile and damage to
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 15 SURRY HILLS Version 4 – 19th March 2019
underlying roots and minimise. The machine shall work within the footprint of the existing path
footprint to avoid compaction of the underlying soil. The final layer of sub-base material shall be
removed using hand tools were required to avoid compaction of the underlying soil profile and
avoid damage to any underlying woody roots.
10.5.3 Demolition of existing walls, kerbs and other structures within the TPZ of trees [all trees
nominated for retention] shall be undertaken under the supervision of a qualified Arborist [AQF
level 5]. The structures shall be demolished using equipment on stationed outside the TPZ where
possible or within the footprint of existing hardstand areas.
10.5.4 Care shall be taken to avoid the root systems, trunks and lower branches of trees in the vicinity of
the structures during demolition works, with special attention required during demolition of the
footings and other sub-surface members to avoid damage to woody roots. An observer (‘spotter’)
shall be employed to assist the plant operator in order to detect and avoid damage to underlying
woody roots during demolition. Trunk and/or branch protection shall be installed where there is a
potential risk of damage to trees in proximity or overhead of the work.
10.6 Excavations within Tree Protection Zones
10.6.1 Prior to any mechanical trenching or excavation within the TPZs of Trees [T6, T17, T20, T37,
T38, T39, T40, T41, T42, T51, T56, T57, T58, T59 & T63] exploratory excavation using non-
destructive techniques shall be taken along the perimeter of the structure or pavement within the
TPZ. Non-destructive excavation techniques may include the use of hand-held implements, air
pressure (using an Air-spade® device) or water pressure. The exploratory excavation shall be
undertaken along the perimeter of the foundation or pavement (within the TPZ) to the depth of the
foundation or to a maximum of 800mm from surface levels, to locate and expose any woody roots
prior to any mechanical excavation.
10.6.2 All care shall be undertaken to preserve woody roots intact and undamaged during exploratory
excavation. Any roots encountered of less than 50mm in diameter may be cleanly severed with
clean sharp pruning implements at the face of the excavation. The root zone in the vicinity of the
excavation shall be kept moist following excavation for the duration of construction to minimise
moisture stress on the tree. Where large woody roots (greater than 40mm diameter) are
encountered during exploratory excavations, further advice from a qualified arborist shall be
sought prior to severance.
10.6.3 Where necessary, (to avoid severing large woody roots which may compromise stability)
consideration should be given to relocating the trench further away from the trees or installing
conduits by alternative methods (such as Horizontal Directional Drilling (HDD)). Where this is not
feasible, the removal of the tree will need to be considered.
10.7 Underground Services
10.7.1 Trenching for underground services within the TPZs of Trees [T6, T17, T20, T37, T38, T39, T40,
T41, T42, T51, T56, T57, T58 & T59], shall be undertaken using non-destructive excavation in
accordance with Section 10.6. Where large woody roots are encountered during excavation or
trenching (root diameter greater than 40mm), these shall be retained intact wherever possible (e.g.
by tunnelling beneath roots and inserting the pipeline or conduit beneath or re-routing the service
etc). Where this is not practical and root pruning is the only alternative, proposed root pruning
should be assessed by a qualified arborist [AQF 5] to evaluate the potential impact on the health
and stability of the subject tree.
10.7.2 Installation of underground services and stormwater pipes within the SRZs of Trees [any tree
nominated for retention], shall only be undertaken by Horizontal Directional Drilling (HDD)
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 16 SURRY HILLS Version 4 – 19th March 2019
(also referred to as sub-surface boring or Micro-tunnelling for large diameter pipes). The Invert
Level of the pipe, plus the pipe diameter, must be lower than the estimated root zone depth as
specified. At this site a minimum depth of 1 metre to the invert level of the pipe is specified.
10.8 Canopy & Root Pruning
10.8.1 Canopy pruning of Trees [T6, T20, T37, T42, T51, T53 & T57] (that essential to facilitate
trenching, temporary shoring and cable installation) shall be carried out in accordance with
Australian Standard 4373-2007 – Pruning of Amenity Trees. All pruning work shall be carried out
by a qualified and experienced arborist or tree surgeon [Australian Qualification Framework Level
3] in accordance with the NSW WorkCover Code of Practice for the Amenity Tree Industry
(1998). No branches of greater than 100mm in diameter should be removed or pruned without
further advice from a Consulting Arborist [Australian Qualification Framework Level 5].
10.8.2 Where root pruning of [any tree nominated for retention] is required to facilitate construction,
roots shall be severed with clean, sharp pruning implements and retained in a moist condition
during the construction phase using Hessian material or mulch where practical. Severed roots shall
be treated with a suitable root growth hormone containing the active constituents Indol-3-yl-Butric
Acid (IBA) and 1-Naphthylacetic Acid (NAA) to stimulate rapid regeneration of the root system.
No branches of greater than 40mm in diameter should be removed or pruned without further
advice from a Consulting Arborist [Australian Qualification Framework Level 5].
10.9 Tree Damage
10.9.1 Care shall be taken when operating cranes, drilling rigs and similar equipment near trees to avoid
damage to tree canopies (foliage and branches). Under no circumstances shall branches be torn-off
by construction equipment. Where there is potential conflict between tree canopy and construction
activities, the advice of the Site Arborist must be sought.
10.9.2 In the event of any tree becoming damaged for any reason during the construction period a
consulting arborist [Australian Qualification Framework Level 5] shall be engaged to inspect and
provide advice on any remedial action to minimise any adverse impact. Such remedial action shall
be implemented as soon as practicable and certified by the arborist.
10.10 Tree Removal
10.10.1 The removal of Trees [T57 (if required, subject to further investigation), T60, T61, T62 & T63
(if required, subject to further investigation] shall be carried out by an experienced tree surgeon
in accordance with the NSW WorkCover Code of Practice for the Amenity Tree Industry (1998).
Care shall be taken to avoid damage to other trees during the felling operation.
10.10.2 Stumps located within the TPZs of trees to be retained shall be grubbed-out where required using a
mechanical stump grinder (or by hand where less than 150mm in diameter) without damage to the
root system of other trees. Where trees to be removed are within the SRZ of any trees to be
retained, consideration should be given to cutting the stump close to ground level and retaining the
root crown intact. Stumps within the Tree Protection Zone of other trees to be retained shall not be
pulled out using excavation equipment or similar.
10.11 Ground Protection
10.11.1 Construction haul routes shall be confined to existing paved areas wherever possible. Where this is
not feasible and construction haul routes or access for plant and equipment must traverse soft
landscape areas within TPZs of [any tree nominated for retention], 20mm thick marine ply
sheets or truck mats (such as Envirex Versadeck® access mats) (refer Figure 6 shall be placed
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 17 SURRY HILLS Version 4 – 19th March 2019
over the top of the ground surface to minimise compaction and disturbance of the underlying soil
profile and root zone.
Figure 6 – Showing typical detail for truck mats.
10.11.2 Ground protection shall be installed prior to any site works and maintained in good condition for
the duration of the construction period. On completion of the works, ground protection shall be
removed without damage or disturbance to the underlying soil profile.
11 REPLACEMENT PLANTING
11.1.1 Where trees are required to be removed to accommodate the proposed development, new trees
shall be planted elsewhere within the relevant road reserves in accordance with the TfNSW
Vegetation Offset Guideline (2017) [9TP-SD087/1.0]. Table 1 in Section 5.2 of The Vegetation
Offset Guideline specifies the ratio of trees to be replaced in relation to trees to be removed as
follows:-
Table 1 - Offsetting for Individual Tree Removal
Tree Type Offset
Large tree (DBH greater than 60 cm) Plant minimum 8 trees
Medium tree (DBH greater than 15 cm, but less than 60 cm) Plant minimum 4 trees
Small young tree (DBH less than 15 cm) Plant minimum 2 trees
Ref: Extract from Vegetation Offset Guideline (2017) [9TP-SD087/1.0].
The City of Sydney Council’s Street Tree Master Plan 2011 (STMP) and Technical Guidelines (Part
D of the STMP, updated 2015) provide guidelines and specifications for species selection, plant
stock quality and streetscape planting details. The STMP indicates that the preferred tree species
selection for each street along the proposed cable route as follows:-
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 18 SURRY HILLS Version 4 – 19th March 2019
Table 2 – Replacement Trees – Species Selection
Street Species
Ann Street Pistacia chinensis (Chinese Pistachio)
Commonwealth Street Angophora costata (Sydney Red Gum)
Albion Street Platanus acerifolia (London Plane)
Elizabeth Street Platanus acerifolia (London Plane)
Ref: Extract from City of Sydney Street Tree Master Plan 2011.
The new plant stock must be compliant with the Natspec Guide Specifying Trees: A Guide to
Assessment of Tree Quality by Ross Clark.
Section 5 of the STMP Technical Manual provides specifications for Street Tree installation and
Section 7 of the Technical Manual provides Tree Planting Details for various situations. The
appropriate detail will depend on the defined treatment for each street along the route. These
specifications should complied with when installing the new tree stock. The actual position of new
stock should be determined in consultation with the City of Sydney Street Tree Contract Co-
ordinator.
Andrew Morton
EARTHSCAPE HORTICULTURAL SERVICES
19th March 2019
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 19 SURRY HILLS Version 4 – 19th March 2019
12 REFERENCES
1 GA Chapman & CL Murphy (1989)
Soil Landscapes of the Sydney 1:100,000 Sheet
Soil Conservation Service of NSW. Sydney
2 Benson, Doug & Howell, Jocelyn (1990)
Taken for Granted: the Bushland of Sydney and its Suburbs.
Kangaroo Press & The Royal Botanic Gardens, Sydney, NSW
3 Mattheck, Dr. Claus & Breloer, Helge (1994) – Sixth Edition (2001)
The Body Language of Trees – A Handbook for Failure Analysis
The Stationery Office, London, England
4 Barrell, Jeremy (1996) Pre-development Tree Assessment
Proceedings of the International Conference on Trees and Building Sites (Chicago)
International Society of arboriculture, Illinois, USA
5 Ruting, Noel (November 2005)
Register of Significant Trees – Part 2 of 4; Significant Street Trees (City of Sydney)
Landarc Pty Ltd & the Council of the City of Sydney, Sydney NSW
6 Council of Standards Australia (August 2009)
AS 4970 – 2009 – Protection of Trees on Development Sites
Standards Australia, Sydney
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 20 SURRY HILLS Version 4 – 19th March 2019
APPENDIX 1 - CRITERIA FOR ASSESSMENT OF LANDSCAPE SIGNIFICANCE
RATING HERITAGE VALUE ECOLOGICAL VALUE AMENITY VALUE
1. SIGNIFICANT
The subject tree is listed as a Heritage Item under the Local Environment Plan (LEP) with a local, state or national level of significance or is listed on Council’s Significant Tree Register
The subject tree is scheduled as a Threatened Species as defined under the Threatened Species Conservation Act 1995 (NSW) or the Environmental Protection and Biodiversity Conservation Act 1999
The subject tree has a very large live crown size exceeding 300m² with normal to dense foliage cover, is located in a visually prominent position in the landscape, exhibits very good form and habit typical of the species
The subject tree forms part of the curtilage of a Heritage Item (building /structure /artefact as defined under the LEP) and has a known or documented association with that item
The tree is a locally indigenous species, representative of the original vegetation of the area and is known as an important food, shelter or nesting tree for endangered or threatened fauna species
The subject tree makes a significant contribution to the amenity and visual character of the area by creating a sense of place or creating a sense of identity
The subject tree is a Commemorative Planting having been planted by an important historical person (s) or to commemorate an important historical event
The subject tree is a Remnant Tree, being a tree in existence prior to development of the area
The tree is visually prominent in view from surrounding areas, being a landmark or visible from a considerable distance.
2. VERY HIGH
The tree has a strong historical association with a heritage item (building/structure/artefact/garden etc) within or adjacent the property and/or exemplifies a particular era or style of landscape design associated with the original development of the site.
The tree is a locally-indigenous species, representative of the original vegetation of the area and is a dominant or associated canopy species of an Endangered Ecological Community (EEC) formerly occurring in the area occupied by the site.
The subject tree has a very large live crown size exceeding 200m²; a crown density exceeding 70% (normal-dense), is a very good representative of the species in terms of its form and branching habit or is aesthetically distinctive and makes a positive contribution to the visual character and the amenity of the area
3. HIGH
The tree has a suspected historical association with a heritage item or landscape supported by anecdotal or visual evidence
The tree is a locally-indigenous species and representative of the original vegetation of the area and the tree is located within a defined Vegetation Link / Wildlife Corridor or has known wildlife habitat value
The subject tree has a large live crown size exceeding 100m²; The tree is a good representative of the species in terms of its form and branching habit with minor deviations from normal (e.g. crown distortion/suppression) with a crown density of at least 70% (normal); The subject tree is visible from the street and surrounding properties and makes a positive contribution to the visual character and the amenity of the area
4. MODERATE
The tree has no known or suspected historical association, but does not detract or diminish the value of the item and is sympathetic to the original era of planting.
The subject tree is a non-local native or exotic species that is protected under the provisions of this DCP.
The subject tree has a medium live crown size exceeding 40m²;The tree is a fair representative of the species, exhibiting moderate deviations from typical form (distortion/suppression etc) with a crown density of more than 50% (thinning to normal); and
The tree is visible from surrounding properties, but is not visually prominent – view may be partially obscured by other vegetation or built forms. The tree makes a fair contribution to the visual character and amenity of the area.
5. LOW
The subject tree detracts from heritage values or diminishes the value of a heritage item
The subject tree is scheduled as exempt (not protected) under the provisions of this DCP due to its species, nuisance or position relative to buildings or other structures.
The subject tree has a small live crown size of less than 40m² and can be replaced within the short term (5-10 years) with new tree planting
6. VERY LOW
The subject tree is causing significant damage to a heritage Item.
The subject tree is listed as an Environment Weed Species in the relevant Local Government Area, being invasive, or is a known nuisance species.
The subject tree is not visible from surrounding properties (visibility obscured) and makes a negligible contribution or has a negative impact on the amenity and visual character of the area. The tree is a poor representative of the species, showing significant deviations from the typical form and branching habit with a crown density of less than 50% (sparse).
7. INSIGNIFICA
NT
The tree is completely dead and has no visible habitat value The tree is a declared Noxious Weed under the Noxious Weeds Act (NSW) 1993 within the relevant Local Government Area.
The tree is completely dead and represents a potential hazard.
Ref:- Morton, A (2006) Determining the Retention Value of Trees on Development Sites
TreeNet - Proceedings of the 7th National Street Tree Symposium 2006 Government of South Australia Department for Transport, Energy and Infrastructure
EARTHSCAPE HORTICULTURAL SERVICES _____________________________________________________________________________________________________________________
_____________________________________________________________________________________________________________________ Arboricultural Impact Assessment Report – Proposed 33kV Feeder 7U5 21 SURRY HILLS Version 4 – 19th March 2019
APPENDIX 2 – ACCEPTABLE INCURSIONS TO THE TREE PROTECTION ZONE (TPZ)
REF:- Council of Standards Australia (August 2009)
AS 4970 – 2009 – Protection of Trees on Development Sites
Standards Australia, Sydney
Vigour Pest & Disease
1Populus nigra 'Italica'
(Lombardy Poplar)15 6 621 78 M Appears stable with fair branching structure. Deadwooded
Fair with
slightly
thinning
crown
Low Poplar Rust
infection
Medium
15-40
Years
4 Moderate Ann Street
2Pistacia chinensis (Chinese Pistachio)
4 2 70 6 IAppears stable with sound branching structure.
New planting - stakes and ties installed.
Crown lifted to 1
metre
Very
GoodNo Evidence
Long -
more than
40 years
5 Moderate Ann Street
3Pistacia chinensis (Chinese Pistachio)
3 3 50 6 IAppears stable with sound branching structure.
New planting - stakes and ties installed.
Crown lifted to 1
metreGood No Evidence
Long -
more than
40 years
5 Moderate Ann Street
4Populus nigra 'Italica'
(Lombardy Poplar)13 6 446 66 M
Appears stable with fair branching structure.
Exhibits a low bark inclusion at 2.5 metres at
junction of co-dominant leaders.
Crown lifted to 2
metres. Deadwooded.Fair
Moderate Poplar
Rust infection.
Medium
15-40
Years
4 Moderate Ann Street
5Pistacia chinensis (Chinese Pistachio)
4 4 111 10 I Appears stable with sound branching structure.
Crown lifted to 2
metres. Selectively
pruned.
Very
GoodNo Evidence
Long -
more than
40 years
5 Moderate Ann Street
6Pistacia chinensis (Chinese Pistachio)
11 9 283 81 M
Appears stable with fair branching structure.
Exhibits a moderate bark inclusion at 3 metres at
junction of co-dominant PLs. Prominent lean to the
east. Multiple small wounds on upper trunk at 2-3
metres due vehicle damage.
Crown lifted to 3
metres.
Very
GoodNo Evidence
Long -
more than
40 years
4 Moderate Ann Street
7
Liquidambar styraciflua (Liquidambar)
14 12 532 144 MAppears stable with fair branching structure.
Exhibits some girdling roots around trunk at GL.
Selectively pruned &
topped (gully-cut) to
clear overhead
powerlines (ABCs)
Very
GoodNo Evidence
Long -
more than
40 years
3 High Ann Street
8Pistacia chinensis (Chinese Pistachio)
3.5 3.5 60 8.75 IAppears stable with fair branching structure. Main
leader suppressed with bend in trunk.No Evidence
Very
GoodNo Evidence
Long -
more than
40 years
5 Moderate Ann Street
9
Liquidambar styraciflua (Liquidambar)
16 12 720 156 M
Appears stable with fair branching structure.
Exhibits a large wound due previous pruning
(secondary leader removed). Multiple leaders at 2-4
metres. Roots displacing kerb.
Selectively pruned &
topped (gully-cut) at 5
metres to clear
overhead powerlines
(ABCs). Crown
restored.
Good No Evidence
Medium
15-40
Years
3 High Ann Street
Health
Lo
cati
on
Rete
nti
on
Valu
e
Lan
dscap
e
Sig
nif
ican
ce R
ati
ng
Tre
e Id
en
tifi
cati
on
No
.
Species
APPENDIX 3 - TREE HEALTH AND CONDITION ASSESSMENT SCHEDULE
Condition
Heig
ht
(m)
Sp
read
(m
)
Matu
rity
Cla
ss
Tru
nk D
iam
ete
r
(mm
)
Rem
ain
ing
Safe
Usefu
l L
ife
Exp
ecta
ncy (
SU
LE
)
Liv
e C
row
n S
ize
(m²)
Previous Pruning
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Vigour Pest & Disease
Health
Lo
cati
on
Rete
nti
on
Valu
e
Lan
dscap
e
Sig
nif
ican
ce R
ati
ng
Tre
e Id
en
tifi
cati
on
No
.
Species
APPENDIX 3 - TREE HEALTH AND CONDITION ASSESSMENT SCHEDULE
Condition
Heig
ht
(m)
Sp
read
(m
)
Matu
rity
Cla
ss
Tru
nk D
iam
ete
r
(mm
)
Rem
ain
ing
Safe
Usefu
l L
ife
Exp
ecta
ncy (
SU
LE
)
Liv
e C
row
n S
ize
(m²)
Previous Pruning
10Pistacia chinensis (Chinese Pistachio)
2.5 2.5 70 3.75 I Appears stable with sound branching structure. Crown lifted to 1.5
metres
Very
GoodNo Evidence
Long -
more than
40 years
5 Moderate Ann Street
11Pistacia chinensis (Chinese Pistachio)
4.5 5 105 15 IAppears stable with sound branching structure.
Exhibits multiple leaders (3) at 1.7 metres
Crown lifted to 1.5
metres
Very
GoodNo Evidence
Long -
more than
40 years
5 Moderate Ann Street
12Pistacia chinensis (Chinese Pistachio)
7 6 169 30 SMAppears stable with fair branching structure. Crown
suppressed on west side due to previous pruning.
SLs & TLs lopped at 3-
4 metres to clear
overhead powerlines
(ABCs). Selectively
pruned west side to
clear powerpole.
Very
GoodNo Evidence
Long -
more than
40 years
5 Moderate Ann Street
13Pistacia chinensis (Chinese Pistachio)
9 10 303 70 M Appears stable with sound branching structure.
SLs & TLs selectively
pruned at 3-4 metres
to clear overhead
powerlines (ABCs).
Very
GoodNo Evidence
Long -
more than
40 years
4 Moderate Ann Street
14Pistacia chinensis (Chinese Pistachio)
5 6.5 166 19.5 SM Appears stable with sound branching structure.
TLs lopped at 3-4
metres to clear
overhead powerlines
(ABCs).
Very
GoodNo Evidence
Long -
more than
40 years
4 Moderate Ann Street
15Pistacia chinensis (Chinese Pistachio)
5 4 110 14 I Appears stable with sound branching structure. No EvidenceVery
GoodNo Evidence
Long -
more than
40 years
5 Moderate Ann Street
16Persea americana (Avocado Pear)
13 9 414 99 MAppears stable with sound branching structure.
Exhibits a prominent lean to the west.Deadwooded
Very
GoodNo Evidence
Long -
more than
40 years
3 High Ann Street
17
Melaleuca quinquenervia (Broad-
leaved Paperbark)
13 7 529 77 M
Appears stable with poor branching structure.
Crown suppressed on the east side due to
crowding. Exhibits a severe bark inclusion at 1-2
metres at junction of co-dominant PLs.
Crown lifted to 3
metresGood No Evidence
Medium
15-40
Years
3 Moderate Ann Street
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Vigour Pest & Disease
Health
Lo
cati
on
Rete
nti
on
Valu
e
Lan
dscap
e
Sig
nif
ican
ce R
ati
ng
Tre
e Id
en
tifi
cati
on
No
.
Species
APPENDIX 3 - TREE HEALTH AND CONDITION ASSESSMENT SCHEDULE
Condition
Heig
ht
(m)
Sp
read
(m
)
Matu
rity
Cla
ss
Tru
nk D
iam
ete
r
(mm
)
Rem
ain
ing
Safe
Usefu
l L
ife
Exp
ecta
ncy (
SU
LE
)
Liv
e C
row
n S
ize
(m²)
Previous Pruning
18Pistacia chinensis (Chinese Pistachio)
3.5 3 80 7.5 I Appears stable with fair branching structure. No Evidence Good No Evidence
Long -
more than
40 years
5 Moderate Ann Street
19Pistacia chinensis (Chinese Pistachio)
2.5 2 60 3 I Appears stable with sound branching structure. No EvidenceVery
GoodNo Evidence
Long -
more than
40 years
5 Moderate Ann Street
20Pistacia chinensis (Chinese Pistachio)
5 6 169 21 SM Appears stable with sound branching structure. Selectively pruned &
deadwooded.
Very
GoodNo Evidence
Long -
more than
40 years
5 Moderate Ann Street
21Pistacia chinensis (Chinese Pistachio)
4 4 70 10 I Appears stable with sound branching structure. Crown lifted to 2
metres
Very
GoodNo Evidence
Long -
more than
40 years
5 Moderate Ann Street
22Callistemon viminalis (Weeping Bottlebrush)
6 5 242 20 MAppears stable with fair branching structure.
Exhibits a very prominent lean to the south-west.
Crown lifted to 2
metresGood No Evidence
Medium
15-40
Years
5 Low Ann Street
23
Melaleuca quinquenervia (Broad-
leaved Paperbark)
12 9 621 81 MAppears stable with fair branching structure.
Exhibits a prominent lean to the north.
Crown lifted to 3
metres. Selectively
pruned to clear
overhead powerlines
(ABCs)
Good No Evidence
Medium
15-40
Years
3 Moderate Ann Street
24
Melaleuca quinquenervia (Broad-
leaved Paperbark)
10 6 404 42 SM
Appears stable with fair branching structure.
Exhibits a very prominent lean to the south.
Contorted habit. Low bark inclusion at 2 metres.
Crown lifted to 3
metresGood No Evidence
Medium
15-40
Years
4 ModerateCommonw
ealth Street
25Callistemon viminalis (Weeping Bottlebrush)
2.5 2 80 2 I
Appears stable with fair branching structure.
Exhibits a very prominent lean to the east.
Contorted - poor form and habit.
Crown lifted to 2
metresGood No Evidence
Short
5-15 Years5 Low
Commonw
ealth Street
26Callistemon viminalis (Weeping Bottlebrush)
3 3.5 130 5.25 I
Appears stable with fair branching structure.
Exhibits a moderate wound on lower trunk due to
mechanical injury.
Crown lifted to 2
metresGood No Evidence
Short
5-15 Years5 Low
Commonw
ealth Street
27
Melaleuca quinquenervia (Broad-
leaved Paperbark)
6 6 338 24 SM
Appears stable with fair branching structure.
Exhibits multiple moderate bark inclusions at 2-3
metres at junctions of PLs.
Selectively pruned to
clear overhead
powerlines (ABCs)
Fair No Evidence
Medium
15-40
Years
4 ModerateCommonw
ealth Street
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Vigour Pest & Disease
Health
Lo
cati
on
Rete
nti
on
Valu
e
Lan
dscap
e
Sig
nif
ican
ce R
ati
ng
Tre
e Id
en
tifi
cati
on
No
.
Species
APPENDIX 3 - TREE HEALTH AND CONDITION ASSESSMENT SCHEDULE
Condition
Heig
ht
(m)
Sp
read
(m
)
Matu
rity
Cla
ss
Tru
nk D
iam
ete
r
(mm
)
Rem
ain
ing
Safe
Usefu
l L
ife
Exp
ecta
ncy (
SU
LE
)
Liv
e C
row
n S
ize
(m²)
Previous Pruning
28
Melaleuca quinquenervia (Broad-
leaved Paperbark)
11 8 522 72 M
Appears stable with fair branching structure.
Exhibits multiple moderate bark inclusions at 2-3
metres at junctions of PLs. Prominent lean to east
over road.
Crown lifted to 3
metres
Very
GoodNo Evidence
Long -
more than
40 years
3 HighCommonw
ealth Street
29
Melaleuca quinquenervia (Broad-
leaved Paperbark)
9 5 325 35 SM
Appears stable with fair branching structure.
Exhibits a large wound at 2 metres due branch loss
(included bark).
Crown lifted to 3
metresGood No Evidence
Long -
more than
40 years
4 ModerateCommonw
ealth Street
30
Melaleuca quinquenervia (Broad-
leaved Paperbark)
9 8 478 56 M
Appears stable with fair branching structure.
Exhibits a moderate bark inclusion at 2 metres at
junction of PLs. Crown suppressed on north-west
side due building.
Crown lifted to 3
metres
Very
GoodNo Evidence
Long -
more than
40 years
3 HighCommonw
ealth Street
31Platanus x hybrida (London Plane)
4 3 70 9 I
Appears stable with fair branching structure.
Exhibits a moderate wound at 1.5 metres due
branch loss.
Crown lifted to 1
metre.Good
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
5 ModerateAlbion
Street
32Lophostemon confertus (Brushbox)
9 9 449 63 M
Appears stable with fair branching structure.
Exhibits a prominent lean to the north-west. Roots
displacing kerb.
Lopped to clear
overhead powerlines
at 3-5 metres
Very
GoodNo Evidence
Long -
more than
40 years
4 ModerateAlbion
Street
33Platanus x hybrida (London Plane)
20 18 697 270 M
Appears stable with sound branching structure.
Exhibits a prominent lean to the west. Roots
displacing kerb. Large woody root plate to 2 metres
radius. Moderate wound at 2-3 metres due vehicle
damage.
Selectively pruned to
clear building
Very
Good
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
2 HighAlbion
Street
34Platanus orientalis (Oriental Plane)
12 10 468 100 MAppears stable with sound branching structure.
Exhibits some girdling roots at GL around trunk.
Crown lifted to 3
metres
Very
Good
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
3 HighAlbion
Street
35Platanus x hybrida (London Plane)
7 5 118 25 I
Appears stable with sound branching structure.
Crown suppressed on east side due to previous
pruning.
Crown lifted to 3
metres. Selectively
pruned to clear power
pole
FairModerate Sycamore
Lace Bug infestation
Long -
more than
40 years
4 ModerateAlbion
Street
36Platanus x hybrida (London Plane)
18 16 506 256 MAppears stable with sound branching structure.
Crown suppressed on west side due to crowding.
Crown lifted to 3
metres
Very
Good
Moderate Sycamore
Lace Bug infestation
Long -
more than
40 years
2 HighAlbion
Street
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Vigour Pest & Disease
Health
Lo
cati
on
Rete
nti
on
Valu
e
Lan
dscap
e
Sig
nif
ican
ce R
ati
ng
Tre
e Id
en
tifi
cati
on
No
.
Species
APPENDIX 3 - TREE HEALTH AND CONDITION ASSESSMENT SCHEDULE
Condition
Heig
ht
(m)
Sp
read
(m
)
Matu
rity
Cla
ss
Tru
nk D
iam
ete
r
(mm
)
Rem
ain
ing
Safe
Usefu
l L
ife
Exp
ecta
ncy (
SU
LE
)
Liv
e C
row
n S
ize
(m²)
Previous Pruning
37Platanus x hybrida (London Plane)
18 16 487 256 M
Appears stable with sound branching structure.
Area over SRZ mounded due underlying roots and
covered with rubberised softfall.
Crown lifted to 3
metres
Very
Good
Moderate Sycamore
Lace Bug infestation
Long -
more than
40 years
2 HighAlbion
Street
38Platanus x hybrida (London Plane)
16 14 382 168 M Appears stable with sound branching structure. Crown lifted to 4
metres. DeadwoodedGood
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
3 HighAlbion
Street
39Platanus x hybrida (London Plane)
14 11 306 110 SM Appears stable with sound branching structure. Crown lifted to 4
metres. DeadwoodedGood
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
4 ModerateAlbion
Street
40Platanus x hybrida (London Plane)
14 11 334 110 SM Appears stable with sound branching structure. Crown lifted to 4
metres. DeadwoodedGood
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
4 ModerateAlbion
Street
41Platanus x hybrida (London Plane)
17 11 420 143 M Appears stable with sound branching structure. Crown lifted to 4
metres. DeadwoodedGood
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
3 HighAlbion
Street
42Platanus x hybrida (London Plane)
18 16 561 208 MAppears stable with sound branching structure.
Exhibits a slight lean to the west.
Crown lifted to 5
metres. Deadwooded
Very
Good
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
3 HighAlbion
Street
43Platanus x hybrida (London Plane)
3.5 2 50 7 I Appears stable with sound branching structure. No EvidenceVery
Good
Moderate Sycamore
Lace Bug infestation
Long -
more than
40 years
5 ModerateAlbion
Street
44Platanus x hybrida (London Plane)
15 11 350 121 SM
Appears stable with sound branching structure.
Crown suppressed on the north side due to
building.
Crown lifted to 5
metres
Very
Good
Moderate Sycamore
Lace Bug infestation
Long -
more than
40 years
3 HighAlbion
Street
45Platanus x hybrida (London Plane)
15 9 325 90 SM
Appears stable with sound branching structure.
Crown suppressed on the north side due to
building. Prominent lean to the south.
Crown lifted to 5
metres
Very
Good
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
3 HighAlbion
Street
46Platanus x hybrida (London Plane)
15 8 360 72 SM
Appears stable with sound branching structure.
Exhibits a slight lean to the south. Crown
suppressed on the north side due to building.
Multiple large axial wounds on lower trunk due
suspected canker infection.
Crown lifted to 5
metresFair
Low Sycamore Lace
Bug infestation.
Suspected
Botryosphaeria
Canker infection.
Short
5-15 Years4 Low
Albion
Street
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Vigour Pest & Disease
Health
Lo
cati
on
Rete
nti
on
Valu
e
Lan
dscap
e
Sig
nif
ican
ce R
ati
ng
Tre
e Id
en
tifi
cati
on
No
.
Species
APPENDIX 3 - TREE HEALTH AND CONDITION ASSESSMENT SCHEDULE
Condition
Heig
ht
(m)
Sp
read
(m
)
Matu
rity
Cla
ss
Tru
nk D
iam
ete
r
(mm
)
Rem
ain
ing
Safe
Usefu
l L
ife
Exp
ecta
ncy (
SU
LE
)
Liv
e C
row
n S
ize
(m²)
Previous Pruning
47Platanus x hybrida (London Plane)
7 5 166 15 SM
Appears stable with sound branching structure.
Exhibits a prominent lean to the south. Crown
suppressed on the north side due to building.
Crown lifted to 4
metresFair
Low Sycamore Lace
Bug infestation
Short
5-15 Years4 Low
Albion
Street
48Platanus x hybrida (London Plane)
3 2 40 6 I Appears stable with sound branching structure. No Evidence GoodLow Sycamore Lace
Bug infestation
Long -
more than
40 years
5 ModerateAlbion
Street
49Platanus x hybrida (London Plane)
15 12 347 132 SMAppears stable with sound branching structure.
Exhibits a proinent lean to the west.
Crown lifted to 4
metres
Very
Good
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
3 HighAlbion
Street
50Platanus orientalis (Oriental Plane)
20 18 933 252 M
Appears stable with sound branching structure.
Exhibits multiple axial wounds on trunk at 2-4
metres.
Selectively crown
thinned &
deadwooded.
Very
Good
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
1 HighElizabeth
Street
51Platanus x hybrida (London Plane)
22 28 1067 476 M
Appears stable with sound branching structure.
Roots lifting and cracking asphalt pavement
(footpath).
Selectively crown
thinned &
deadwooded.
Very
Good
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
1 HighElizabeth
Street
52Platanus x hybrida (London Plane)
7 6 140 42 IAppears stable with sound branching structure.
Exhibits a prominent lean to the west.
Crown lifted to 1
metre.Good
Low Sycamore Lace
Bug infestation
Long -
more than
40 years
4 ModerateElizabeth
Street
53Platanus x hybrida (London Plane)
25 28 1131 532 M Appears stable with sound branching structure.
Selectively crown
thinned &
deadwooded. Crown
lifted to 5 metres.
Very
Good
Moderate Sycamore
Lace Bug infestation
Long -
more than
40 years
1 HighElizabeth
Street
54Platanus orientalis (Oriental Plane)
22 18 1038 306 M
Appears stable with sound branching structure.
Crown suppressed on the north side due to
crowding.
Crown lifted to 5
metres
Very
GoodNo Evidence
Long -
more than
40 years
1 HighElizabeth
Street
55Platanus x hybrida (London Plane)
10 7 185 56 SM Appears stable with sound branching structure. Crown lifted to 2
metresGood
Moderate Sycamore
Lace Bug infestation
Long -
more than
40 years
4 ModerateElizabeth
Street
56Platanus orientalis (Oriental Plane)
16 18 1076 234 M Appears stable with sound branching structure. Crown lifted to 3
metres
Very
GoodNo Evidence
Long -
more than
40 years
1 HighElizabeth
Street
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Vigour Pest & Disease
Health
Lo
cati
on
Rete
nti
on
Valu
e
Lan
dscap
e
Sig
nif
ican
ce R
ati
ng
Tre
e Id
en
tifi
cati
on
No
.
Species
APPENDIX 3 - TREE HEALTH AND CONDITION ASSESSMENT SCHEDULE
Condition
Heig
ht
(m)
Sp
read
(m
)
Matu
rity
Cla
ss
Tru
nk D
iam
ete
r
(mm
)
Rem
ain
ing
Safe
Usefu
l L
ife
Exp
ecta
ncy (
SU
LE
)
Liv
e C
row
n S
ize
(m²)
Previous Pruning
57
Brachychiton acerifolius (Illawarra
Flame Tree)
13 8 404 88 M
Appears stable with sound branching structure.
Exhibits a prominent lean to the north-west (self-
corrected). Crown suppressed east side due
crowding.
Crown lifted to 2
metres
Very
GoodNo Evidence
Long -
more than
40 years
4 ModerateElizabeth
Street
58Phoenix sylvestris (Silver Date Palm)
11 4.5 385 18 M Appears stable with sound branching structure. No Evidence Good No Evidence
Long -
more than
40 years
2 HighEddy Ave
Park
59Phoenix sylvestris (Silver Date Palm)
10 4 315 16 M
Appears stable with sound branching structure.
Exhibits a prominent lean to the east (self-
corrected).
No Evidence Good No Evidence
Long -
more than
40 years
2 HighEddy Ave
Park
60
Olea europaea subsp. europaea (European
Olive)
6 4 240 24 M
Appears stable with fair branching structure.
Exhibits a prominent lean to the west. Crown
suppressed on the east side due to overshadowing.
Multiple basal epicormic sprouts due previous
pruning. Poor form and habit.
Secondary trunk
removed close to GL.
Selectively pruned.
Good No EvidenceShort
5-15 Years5 Low
Eddy Ave
Park
61
Olea europaea subsp. europaea (European
Olive)
7 6 300 42 SM
Appears stable with fair branching structure.
Exhibits a very prominent lean to the west. Crown
suppressed on the east side due to overshadowing.
Multiple basal epicormic sprouts due previous
pruning. Poor form and habit.
Crown lifted to 3
metresGood No Evidence
Short
5-15 Years5 Low
Eddy Ave
Park
62
Olea europaea subsp. europaea (European
Olive)
7 7 200 49 SM
Appears stable with fair branching structure.
Exhibits a very prominent lean to the south-west.
Crown suppressed on the east side due to
overshadowing. Multiple basal epicormic sprouts
due previous pruning. Poor form and habit.
Crown lifted to 4
metresGood No Evidence
Short
5-15 Years5 Low
Eddy Ave
Park
63Platanus orientalis (Oriental Plane)
17 15 739 225 M
Appears stable with sound branching structure.
Crown suppressed on the east side due to crowding
(former street trees, now removed). Prominent lean
to the east (self-corrected)
Selectively crown
thinned &
deadwooded.
Good No Evidence
Long -
more than
40 years
2 HighEddy Ave
Park
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
1Populus nigra 'Italica'
(Lombardy Poplar)
2Pistacia chinensis (Chinese Pistachio)
3Pistacia chinensis (Chinese Pistachio)
4Populus nigra 'Italica'
(Lombardy Poplar)
5Pistacia chinensis (Chinese Pistachio)
6Pistacia chinensis (Chinese Pistachio)
7
Liquidambar styraciflua (Liquidambar)
8Pistacia chinensis (Chinese Pistachio)
Tre
e Id
en
tifi
cati
on
No
.
Species
M 7.5 2.7 174.4 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 1.5 1.1 7.1 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 2.0 1.0 12.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 5.4 2.4 89.9 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 2.5 1.3 19.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 5.0 1.9 78.5
Proposed electrical conduits (33kV Feeder) offset
2.3 meres north and 4.7 metres east. Open
trenching (1.5 metres deep) within TPZ (beyond
kerb, within road pavement). Encroachment to
TPZ = 30%. Crown lifting may be required to
facilitate trenching and shoring (several lower
SLs may require removal/pruning). 20-25%
canopy loss.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
has the potential to result in severance and
damage to woody roots, leading to an adverse
impact. Required pruning exceeds acceptable
limits under AS4373:2007. May result in some
adverse impact. This tree may require removal
depending on re-assessment following
exploratory excavation.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Undertake any required canopy pruning
(that essential to facilitate trenching, shoring and
installation of conduits) in accordance with
Section 10.10. Re-assess potential impact on
health and stability following the result of
exploratory excavation
M 6.4 2.5 127.9 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 2.0 1.0 12.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Tre
e Id
en
tifi
cati
on
No
.
Species
9
Liquidambar styraciflua (Liquidambar)
10Pistacia chinensis (Chinese Pistachio)
11Pistacia chinensis (Chinese Pistachio)
12Pistacia chinensis (Chinese Pistachio)
13Pistacia chinensis (Chinese Pistachio)
14Pistacia chinensis (Chinese Pistachio)
15Pistacia chinensis (Chinese Pistachio)
16Persea americana (Avocado Pear)
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)
M 8.6 2.9 234.2 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 2.0 1.1 12.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 3.0 1.3 28.3 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 3.5 1.6 38.5 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 5.0 2.0 78.5 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 3.2 1.6 32.2 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 2.5 1.3 19.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 5.0 2.3 77.5
Proposed electrical conduits (33kV Feeder) offset
2.7 meres north-east. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 19%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
should not result in any adverse impact given
limited root growth beneath the road pavement.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6.
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Tre
e Id
en
tifi
cati
on
No
.
Species
17
Melaleuca quinquenervia (Broad-
leaved Paperbark)
18Pistacia chinensis (Chinese Pistachio)
19Pistacia chinensis (Chinese Pistachio)
20Pistacia chinensis (Chinese Pistachio)
21Pistacia chinensis (Chinese Pistachio)
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)M 6.3 2.5 126.4
Proposed electrical conduits (33kV Feeder) offset
3.1 meres north. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 25%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
has the potential to result in severance and
damage to woody roots, leading to an adverse
impact. This tree may require removal depending
on re-assessment following exploratory
excavation.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Re-assess potential impact on health and
stability following the result of exploratory
excavation.
M 2.0 1.1 12.6
Proposed electrical conduits (33kV Feeder) offset
1.7 meres north. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 5%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ is less than 10%,
which is within acceptable limits under
AS4970:2009. No adverse impact.
To be retained - no special tree protection
measures required.
M 2.0 1.0 12.6
Proposed electrical conduits (33kV Feeder) offset
1.6 meres north. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 5%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ is less than 10%,
which is within acceptable limits under
AS4970:2009. No adverse impact.
To be retained - no special tree protection
measures required.
M 3.5 1.6 38.5
Proposed electrical conduits (33kV Feeder) offset
1.6 meres north. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 25%. Crown
lifting may be required to facilitate trenching and
shoring (several lower PLs & SLs may require
removal/pruning). 25-30% canopy loss.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
has the potential to result in severance and
damage to woody roots, leading to an adverse
impact. Required pruning exceeds acceptable
limits under AS4373:2007. May result in some
adverse impact. This tree may require removal
depending on re-assessment following
exploratory excavation.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Undertake any required canopy pruning
(that essential to facilitate trenching, shoring and
installation of conduits) in accordance with
Section 10.10. Re-assess potential impact on
health and stability following the result of
exploratory excavation.
M 2.5 1.1 19.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Tre
e Id
en
tifi
cati
on
No
.
Species
22Callistemon viminalis (Weeping Bottlebrush)
23
Melaleuca quinquenervia (Broad-
leaved Paperbark)
24
Melaleuca quinquenervia (Broad-
leaved Paperbark)
25Callistemon viminalis (Weeping Bottlebrush)
26Callistemon viminalis (Weeping Bottlebrush)
27
Melaleuca quinquenervia (Broad-
leaved Paperbark)
28
Melaleuca quinquenervia (Broad-
leaved Paperbark)
29
Melaleuca quinquenervia (Broad-
leaved Paperbark)
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)
M 2.9 1.8 26.5 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 7.5 2.7 174.4
Proposed electrical conduits (33kV Feeder) offset
7 meres south. Open trenching (1.5 metres deep)
within TPZ (beyond kerb, within road pavement).
Encroachment to TPZ = <5%. No canopy pruning
should be required to facilitate trenching and
shoring.
Extent of encroachment to TPZ is less than 10%,
which is within acceptable limits under
AS4970:2009. No adverse impact.
To be retained - no special tree protection
measures required.
M 4.9 2.3 74.0 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 2.0 1.1 12.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 2.5 1.4 19.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 4.1 2.1 51.5
Proposed electrical conduits (33kV Feeder) offset
3.8 meres west. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = <5%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ is less than 10%,
which is within acceptable limits under
AS4970:2009. No adverse impact.
To be retained - no special tree protection
measures required.
M 6.3 2.5 123.3
Proposed electrical conduits (33kV Feeder) offset
6.2 meres east. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = <5%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ is less than 10%,
which is within acceptable limits under
AS4970:2009. No adverse impact.
To be retained - no special tree protection
measures required.
M 3.9 2.1 47.7 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Tre
e Id
en
tifi
cati
on
No
.
Species
30
Melaleuca quinquenervia (Broad-
leaved Paperbark)
31Platanus x hybrida (London Plane)
32Lophostemon confertus (Brushbox)
33Platanus x hybrida (London Plane)
34Platanus orientalis (Oriental Plane)
35Platanus x hybrida (London Plane)
36Platanus x hybrida (London Plane)
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)
M 5.7 2.4 103.2 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 2.0 1.1 12.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 5.4 2.4 91.2
Proposed electrical conduits (33kV Feeder) offset
3.8 meres north-east. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 10%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ is less than 10%,
which is within acceptable limits under
AS4970:2009. No adverse impact.
To be retained - no special tree protection
measures required.
M 10.0 2.8 314.0
Proposed electrical conduits (33kV Feeder) offset
6.7 meres south-west. Open trenching (1.5
metres deep) within TPZ (beyond kerb, within
road pavement). Encroachment to TPZ = 13%.
No canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
should not result in any adverse impact given
limited root growth beneath the road pavement.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6.
M 5.6 2.4 99.1 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 3.0 1.3 28.3 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 8.0 2.5 201.0
Proposed electrical conduits (33kV Feeder) offset
7.3 meres north-east. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = <5%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ is less than 10%,
which is within acceptable limits under
AS4970:2009. No adverse impact.
To be retained - no special tree protection
measures required.
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Tre
e Id
en
tifi
cati
on
No
.
Species
37Platanus x hybrida (London Plane)
38Platanus x hybrida (London Plane)
39Platanus x hybrida (London Plane)
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)
M 8.0 2.4 201.0
Proposed electrical conduits (33kV Feeder) offset
5.5 meres north. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Proposed cable pit (3.5 metres
square) offset 6 metres north-west. Excavations
for pit within TPZ (within existing soft landscape
area). Encroachment to TPZ = 15%. Some
crown lifting may be required to facilitate
trenching, shoring and pit construction (several
lower PLs may require removal/pruning). 20-25%
canopy loss.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
should not result in any adverse impact given
limited root growth beneath the road pavement.
Required pruning exceeds acceptable limits
under AS4373:2007. No adverse impact
providing that pruning is executed as
recommended.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Undertake any required canopy pruning
(that essential to facilitate trenching, shoring and
installation of conduits) in accordance with
Section 10.10.
M 7.5 2.2 176.6
Proposed electrical conduits (33kV Feeder) offset
3.2 meres north-east. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 27%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
has the potential to result in severance and
damage to woody roots, leading to some adverse
impact. This tree may require removal depending
on re-assessment following exploratory
excavation.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Re-assess potential impact on health and
stability following the result of exploratory
excavation.
M 6.0 2.0 113.0
Proposed electrical conduits (33kV Feeder) offset
2.7 meres north-east. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 23%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
has the potential to result in severance and
damage to woody roots, leading to some adverse
impact. This tree may require removal depending
on re-assessment following exploratory
excavation.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Re-assess potential impact on health and
stability following the result of exploratory
excavation.
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Tre
e Id
en
tifi
cati
on
No
.
Species
40Platanus x hybrida (London Plane)
41Platanus x hybrida (London Plane)
42Platanus x hybrida (London Plane)
43Platanus x hybrida (London Plane)
44Platanus x hybrida (London Plane)
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)M 6.0 2.1 113.0
Proposed electrical conduits (33kV Feeder) offset
2.8 meres north-east. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 22%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
has the potential to result in severance and
damage to woody roots, leading to some adverse
impact. This tree may require removal depending
on re-assessment following exploratory
excavation.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Re-assess potential impact on health and
stability following the result of exploratory
excavation.
M 6.5 2.3 132.7
Proposed electrical conduits (33kV Feeder) offset
2.6 meres north-east. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 26%. No
canopy pruning should be required to facilitate
trenching and shoring.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
has the potential to result in severance and
damage to woody roots, leading to some adverse
impact. This tree may require removal depending
on re-assessment following exploratory
excavation.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Re-assess potential impact on health and
stability following the result of exploratory
excavation.
M 8.5 2.6 226.9
Proposed electrical conduits (33kV Feeder) offset
2.6 meres north-east. Open trenching (1.5 metres
deep) within TPZ (beyond kerb, within road
pavement). Encroachment to TPZ = 32%. Some
crown lifting may be required to facilitate
trenching, shoring and pit construction (several
lower PLs may require removal/pruning). 10%
canopy loss.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
has the potential to result in severance and
damage to woody roots, leading to an adverse
impact. This tree may require removal depending
on re-assessment following exploratory
excavation.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Undertake any required canopy pruning
(that essential to facilitate trenching, shoring and
installation of conduits) in accordance with
Section 10.10. Re-assess potential impact on
health and stability following the result of
exploratory excavation.
M 2.0 1.0 12.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 6.0 2.1 113.0 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Tre
e Id
en
tifi
cati
on
No
.
Species
45Platanus x hybrida (London Plane)
46Platanus x hybrida (London Plane)
47Platanus x hybrida (London Plane)
48Platanus x hybrida (London Plane)
49Platanus x hybrida (London Plane)
50Platanus orientalis (Oriental Plane)
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)
M 6.0 2.1 113.0 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 5.0 2.2 78.5 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 3.5 1.6 38.5 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 2.0 0.9 12.6 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 6.5 2.1 132.7 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 11.2 3.2 393.7
Proposed electrical conduits (33kV Feeder) offset
10.1 meres south. Open trenching (1.5 metres
deep) within TPZ (partially beyond kerb, within
road pavement, partially within soft landscape
area). Encroachment to TPZ = <5%. No canopy
pruning should be required to facilitate trenching
and shoring.
No adverse impact.To be retained - no special tree protection
measures required.
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Tre
e Id
en
tifi
cati
on
No
.
Species
51Platanus x hybrida (London Plane)
52Platanus x hybrida (London Plane)
53Platanus x hybrida (London Plane)
54Platanus orientalis (Oriental Plane)
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)
M 12.8 3.4 514.7
Proposed electrical conduits (33kV Feeder) offset
6 meres north-east and 7 metres west. Open
trenching (1.5 metres deep) within TPZ (partially
beyond kerb, within road pavement, partially
within soft landscape area, partially within
footprint of existing concrete footpath (west
side)). Proposed Joint Pit (2 x 6 metres) offset 6.2
metres west. Encroachment to TPZ = 38%.
Some crown lifting may be required to facilitate
trenching, shoring and pit construction (several
lower PLs/SLs may require removal/pruning). 10-
15% canopy loss.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
has the potential to result in severance and
damage to woody roots, leading to an adverse
impact.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Undertake any required canopy pruning
(that essential to facilitate trenching, shoring and
installation of conduits) in accordance with
Section 10.10.
M 3.5 1.4 38.5 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 13.6 3.5 577.9
Proposed electrical conduits (33kV Feeder) offset
10 meres west. Open trenching (1.5 metres deep)
within TPZ (within footprint of existing concrete
footpath (west side)). Encroachment to TPZ =
8%. Minor crown lifting may be required to
facilitate trenching, shoring and pit construction
(several lower SLs/descending TLs) may require
removal/pruning). 10% canopy loss.
Extent of encroachment to TPZ is less than 10%,
which is within acceptable limits under
AS4970:2009. No adverse impact.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake any
required canopy pruning (that essential to
facilitate trenching, shoring and installation of
conduits) in accordance with Section 10.10.
M 12.5 3.4 487.4
Proposed electrical conduits (33kV Feeder) offset
10.7 meres west. Open trenching (1.5 metres
deep) within TPZ (within footprint of existing
concrete footpath (west side)). Encroachment to
TPZ = 4%. No canopy pruning should be
required to facilitate trenching and shoring.
Extent of encroachment to TPZ is less than 10%,
which is within acceptable limits under
AS4970:2009. No adverse impact.
To be retained - no special tree protection
measures required.
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Tre
e Id
en
tifi
cati
on
No
.
Species
55Platanus x hybrida (London Plane)
56Platanus orientalis (Oriental Plane)
57
Brachychiton acerifolius (Illawarra
Flame Tree)
58Phoenix sylvestris (Silver Date Palm)
59Phoenix sylvestris (Silver Date Palm)
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)
M 4.0 1.6 50.2 No proposed works within TPZ. No adverse impact.To be retained - no special tree protection
measures required.
M 12.9 3.4 523.9
Proposed electrical conduits (33kV Feeder) offset
9 meres west. Open trenching (1.5 metres deep)
within TPZ (within footprint of existing concrete
footpath (west side)). Encroachment to TPZ =
10%. No canopy pruning should be required to
facilitate trenching and shoring.
Extent of encroachment to TPZ is less than 10%,
which is within acceptable limits under
AS4970:2009. No adverse impact.
To be retained - no special tree protection
measures required. Re-assess potential impact
on health and stability following determination of
the location of the entry bore pit.
M 4.9 2.3 74.0
Proposed electrical conduits (33kV Feeder) offset
2.7 meres west. Open trenching (1.5 metres
deep) within TPZ (within footprint of existing
concrete footpath (west side)). Encroachment to
TPZ = 17%. Minor crown lifting may be required
to facilitate trenching, shoring and pit construction
(several lower SLs/descending TLs) may require
removal/pruning). 10% canopy loss.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
should not result in any adverse impact given
limited root growth beneath the existing
pavement. This tree may require removal
depending on re-assessment following
determination of final entry/exit pit location (for
under boring).
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. Undertake any required canopy pruning
(that essential to facilitate trenching, shoring and
installation of conduits) in accordance with
Section 10.10. Re-assess potential impact on
health and stability following the result of
exploratory excavation.
G 4.6 2.2 67.1
Proposed electrical conduits (33kV Feeder) offset
2.1 meres east. Open trenching (1.5 metres
deep) within TPZ (within footprint of existing
concrete footpath (west side)). Encroachment to
TPZ = 22%. No canopy pruning should be
required to facilitate trenching and shoring.
Extent of encroachment to TPZ exceeds
acceptable limits under AS4970:2009. Trenching
has the potential to result in an adverse impact
due to the extent of root loss incurred. This tree
may require removal depending on re-
assessment following determination of final entry
pit location.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6. If a conflict with the Under bore entry pit is
unavoidable, transplant the tree to a container
then back into a similar position following
completion of the works.
G 3.8 2.0 44.9
Proposed electrical conduits (33kV Feeder) offset
2.8 meres east. Open trenching (1.5 metres
deep) within TPZ (within footprint of existing
concrete footpath (west side)). Encroachment to
TPZ = 11%. No canopy pruning should be
required to facilitate trenching and shoring.
Extent of encroachment to TPZ marginally
exceeds acceptable limits under AS4970:2009.
However, this species will tolerate the extent of
the encroachment proposed.
Retain in accordance with recommended Tree
Protection Measures (Section 10). Undertake all
trenching within TPZ in accordance with Section
10.6
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
Tre
e Id
en
tifi
cati
on
No
.
Species
60
Olea europaea subsp. europaea (European
Olive)
61
Olea europaea subsp. europaea (European
Olive)
62
Olea europaea subsp. europaea (European
Olive)
63Platanus orientalis (Oriental Plane)
Co
nstr
ucti
on
To
lera
nce
APPENDIX 4 - IMPACT ASSESSMENT SCHEDULE
Str
uctu
ral R
oo
t
Zo
ne (
m R
)
Recommendation
TP
Z (
m²)
Likely ImpactIncursions To Root Zone &/or Canopy
Tre
e P
rote
cti
on
Zo
ne (
m R
)M 2.9 1.8 26.0
Located close to alignment of proposed cable
trench (<1 metre)Proposed works will necessitate removal Remove tree.
M 3.6 2.0 40.7Located close to alignment of proposed cable
trench (<1 metre)Proposed works will necessitate removal Remove tree.
M 3.5 1.7 38.5Located close to alignment of proposed cable
trench (<1 metre)Proposed works will necessitate removal Remove tree.
M 8.9 2.9 246.8
Proposed Cable Pit (3.5 x 3.5 metres) offset 8
metres west. Excavations for cable pit within
TPZ. Encroachment to TPZ = <5%. No canopy
pruning should be required to facilitate trenching
and shoring. Located within the footprint of a
proposed temporary ramp and construction haul
road required to be installed to provide access to
plant and equipment to the work zone.
Proposed works will necessitate removal (High
Retention Value).
Consider alternative access to enable retention of
this tree. Retain in accordance with
recommended Tree Protection Measures
(Section 10). Install Tree Protection Fence in
accordance with Section 10.3. Re-assess
potential impact on health and stability following
determination of construction methodology and
position of construction access ramp.
Earthscape Horticultural Services FEEDER 7U5 - SURRY HILLSPL = Primary Limb; SL = Secondary Limb;
TL = Tertiary Limb. GL = Ground Level
APPENDIX 5 Earthscape Horticultural Services Based on the Aerial Image from SIX Maps DWG No. T19-011001 [A]Arboricultural and Horticultural Consultants
TREE LOCATION PLAN SHOWING PO Box 364TREE RETENTION VALUES BEROWRA NSW 2081
Ph: 02 9456 4787FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 10/01/2019
KEY PLAN
T50
T49
T48 T47
T51
T43
T42
T41T52
T40
T39
T23 T21T24 T15T38 T22
T14T13
T20T35 T19 T12T18 T16 T11T17 T10
T53 T9T6 T8T34 T5T37 T26 T7T25
T4T36
T3
T2T1T27
T28T54 T33
T29
T55T31
T32T30
T57
T56
T58
T59
T61T60
T62 T63
T46
T45
T44
Oriental Plane tree
London Plane tree
London Plane tree
London Plane tree
London Plane tree
London Plane tree
London Plane tree
London Plane tree
London Plane tree
ChineseBroad-leaved Paperbark PistachioBroad-leaved Chinese
London Plane tree London Plane tree Paperbark Weeping PistachioBottlebrush
ChinesePistachio Chinese
ChineseChinese Pistachio PistachioChinese Pistachio Pistachio
ChineseLondon Pistachio ChinesePlane treePistachio Broad-leaved
Paperbark
London Plane tree Liquidambar
Chinese Pistachio Lombardy ChineseOriental Plane tree Chinese Poplar Pistachio
London Plane tree Weeping Pistachio LiquidambarWeeping BottlebrushBottlebrush
London Plane tree
Broad-leaved Chinese PistachioPaperbark Lombardy Poplar
Chinese Pistachio
Broad-leavedLondon Plane tree PaperbarkOriental Plane tree
Broad-leavedPaperbark
London Plane tree
BrushboxBroad-leaved
Paperbark
IllawarraFlame tree
Oriental Plane tree
SilverDate Palm
SilverDate Palm
European OliveEuropean Olive
European Olive Oriental Plane tree
Avocado tree
London Plane tree
LondonLondonPlane tree
Plane tree
ChinesePistachio
LondonPlane tree
SHEET 3
SHEET 4 SHEET 2 SHEET 1
SHEET 5
APPENDIX 5 Earthscape Horticultural Services Based on the Aerial Image from SIX Maps DWG No. T19-011001 [A]Arboricultural and Horticultural Consultants
TREE LOCATION PLAN SHOWING PO Box 364TREE RETENTION VALUES BEROWRA NSW 2081
Ph: 02 9456 4787FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 10/01/2019
SHEET 1
T21T15
T14T13
T12T18 T16 T11T17 T10T9
T6 T8T5 T7
T4
T3
T2T1
ChinesePistachio
ChinesePistachio
ChinesePistachio Chinese
ChineseChinese Pistachio PistachioPistachio
ChinesePistachio Broad-leaved
Paperbark
Liquidambar
Chinese Pistachio Lombardy ChineseChinese Poplar PistachioPistachio Liquidambar
Chinese PistachioLombardy Poplar
Chinese Pistachio
Avocado tree ChinesePistachio
LEGENDTREE RETENTION VALUES
HIGH
MODERATE
LOW
VERY LOW
T23T24T22
T20T35 T19
T34 T26T25
T36
T27T28T33
T29
T31T32
T30
Broad-leaved Paperbark
Broad-leavedPaperbark Weeping
Bottlebrush
Chinese Pistachio
ChineseLondonPistachioPlane tree
Oriental Plane treeWeeping
Weeping BottlebrushBottlebrush
London Plane tree
Broad-leavedPaperbark
Broad-leavedLondon Plane tree Paperbark
Broad-leavedPaperbark
LondonPlane tree
BrushboxBroad-leaved
Paperbark
APPENDIX 5 Earthscape Horticultural Services Based on the Aerial Image from SIX Maps DWG No. T19-011001 [A]Arboricultural and Horticultural Consultants
TREE LOCATION PLAN SHOWING PO Box 364TREE RETENTION VALUES BEROWRA NSW 2081
Ph: 02 9456 4787FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 10/01/2019
SHEET 2
LEGENDTREE RETENTION VALUES
HIGH
MODERATE
LOW
VERY LOW
T50
T49
T48 T47
T51
T43
T42
T41T52
T40
T39
T38
T35
T53
T37
T36
T54
T46
T45
T44
Oriental Plane tree
London Plane tree
LondonLondonPlane tree
Plane tree
London Plane tree
London Plane tree
London Plane tree
London Plane tree
London Plane treeLondon Plane
tree London Plane tree
London Plane tree
London Plane tree
London Plane tree London Plane tree
LondoPlane t
London Plane tree
London Plane tree
London Plane tree
APPENDIX 5 Earthscape Horticultural Services Based on the Aerial Image from SIX Maps DWG No. T19-011001 [A]Arboricultural and Horticultural Consultants
TREE LOCATION PLAN SHOWING PO Box 364TREE RETENTION VALUES BEROWRA NSW 2081
Ph: 02 9456 4787FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 10/01/2019
SHEET 3
LEGENDTREE RETENTION VALUES
HIGH
MODERATE
LOW
VERY LOW
T53
T54
T55
T57
T56
London Plane tree
Oriental Plane tree
London Plane tree
IllawarraFlame tree
Oriental Plane tree
APPENDIX 5 Earthscape Horticultural Services Based on the Aerial Image from SIX Maps DWG No. T19-011001 [A]Arboricultural and Horticultural Consultants
TREE LOCATION PLAN SHOWING PO Box 364TREE RETENTION VALUES BEROWRA NSW 2081
Ph: 02 9456 4787FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 10/01/2019
SHEET 4
LEGENDTREE RETENTION VALUES
HIGH
MODERATE
LOW
VERY LOW
T58
T59
T61T60
T62 T63
SilverDate Palm
SilverDate Palm
European OliveEuropean Olive
European Olive Oriental Plane tree
APPENDIX 5 Earthscape Horticultural Services Based on the Aerial Image from SIX Maps DWG No. T19-011001 [A]Arboricultural and Horticultural Consultants
TREE LOCATION PLAN SHOWING PO Box 364TREE RETENTION VALUES BEROWRA NSW 2081
Ph: 02 9456 4787FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 10/01/2019
SHEET 5
LEGENDTREE RETENTION VALUES
HIGH
MODERATE
LOW
VERY LOW
SHEET 3
SHEET 4 SHEET 2 SHEET 1
SHEET 5
European Olive
T62
T50
T49 T48
T47
T51
T43
T42
T41
T52 T40
T39 T23 T21 T15T24 T22 T14
T38 T13
T20 T12 T11T19 T1 T16 T107
T35 T9T18T8T6
T5 T7T34
T53 T37 T25 T26T4
T3T36 T2
T1
T28T54 T27
T33
T29
T31
T30T55
T32
T57T56
T58
T59
T61
T60
T63
T46
T45
T44
Oriental Plane tree
London Plane tree
London Plane tree
London Plane tree
London Plane treeLondon Plane tree
London Plane tree
London Plane tree
London Plane tree
Broad-leaved Paperbark ChinesePistachio Chinese
Weeping PistachioBroad-leaved Bottlebrush Chinese
London Plane tree ChinesePaperbark Pistachio ChineseLondon Plane tree PistachioChinese Pistachio Pistachio
Chinese Pistachio
ChinesePistachio Broad-leaved
PaperbarkChinese LiquidambarLondonPistachioPlane tree
ChineseChinese PistachioPistachio
Chinese LiquidambarLombardyPistachio
Oriental Plane tree Poplar
London Plane tree London Plane treeWeeping Weeping
Bottlebrush Bottlebrush
Chinese PistachioLombardy Poplar
London Plane tree Chinese Pistachio
Broad-leavedPaperbark
Broad-leavedPaperbark
Oriental Plane tree London Plane tree
Broad-leavedPaperbark
Broad-leavedPaperbark
London Plane tree
Brushbox
IllawarraFlame tree
Oriental Plane tree
SilverDate Palm
SilverDate Palm
European Olive
European Olive
Oriental Plane tree
Avocado tree
LondonPlane tree
London Plane tree
LondonPlane tree
London Planetree
ChinesePistachio
LondonPlane tree
APPENDIX 6 Earthscape Horticultural Services Based on the Aerial Image from NearMap DWG No. T19-011002 [D]Arboricultural and Horticultural Consultants
TREE PROTECTION PLAN PO Box 364BEROWRA NSW 2081Ph: 02 9456 4787
FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 19/03/2019
KEY PLAN
APPENDIX 6 Earthscape Horticultural Services Based on the Aerial Image from NearMap DWG No. T19-011002 [D]Arboricultural and Horticultural Consultants
TREE PROTECTION PLAN PO Box 364BEROWRA NSW 2081Ph: 02 9456 4787
FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 19/03/2019
SHEET 1
Excavations in these areas forfootings and services to beundertaken in accordancewith Section 10.6
LEGEND
Existing buildings & structures to beTree Protection Fence to bedemolished. Demolition workserected in accordance withwithin TPZ's to be undertakenSection 10.3in accordance with Section 10.5
New 33kV Feeder CablesInstall trunk protectionin accordance withSection 10.4
Install Ground Protection inAccordance with Section 10.11Structural Root Zone
(SRZ)
Tree Protection Zone(TPZ) [refer Section 7]
Canopy "Drip-line"
Tree to be transplanted(if required to accomodatebore pit) in accordancewith transplant specification
Tree to be retained andprotected in accordancewith Tree Protection Measures(Section 10)
Tree to be removed inaccordance withSection 10.10
Tree to be pruned inaccordance withSection 10.8
T21 T15T14
T13
T12 T11T16 T10T17
T9T18T8T6
T5 T7
T4T3
T2T1
ChinesePistachio Chinese
PistachioChinese ChinesePistachio Chinese
PistachioChinese Pistachio Pistachio
Broad-leavedPaperbarkChinese Liquidambar
Pistachio
ChineseChinese PistachioPistachio
Chinese LiquidambarLombardyPistachio
Poplar
Chinese PistachioLombardy Poplar
Chinese Pistachio
ChinesePistachio
Avocado tree
T23T24 T22
T20T19
T35
T34T25 T26
T36
T28T27
T33
T29
T31
T30
T32
Broad-leaved Paperbark
WeepingBroad-leaved Bottlebrush
Paperbark
Chinese Pistachio
ChinesePistachio
LondonPlane tree
Oriental Plane tree
Weeping WeepingBottlebrush Bottlebrush
London Plane tree
Broad-leavedPaperbark
Broad-leavedPaperbark
London Plane tree
London Broad-leavedPlane tree Paperbark
Broad-leavedPaperbark
Brushbox
APPENDIX 6 Earthscape Horticultural Services Based on the Aerial Image from NearMap DWG No. T19-011002 [D]Arboricultural and Horticultural Consultants
TREE PROTECTION PLAN PO Box 364 SHEET 2BEROWRA NSW 2081Ph: 02 9456 4787
Excavations in these areas forfootings and services to beundertaken in accordancewith Section 10.6
LEGEND
Existing buildings & structures to beTree Protection Fence to bedemolished. Demolition workserected in accordance withwithin TPZ's to be undertakenSection 10.3in accordance with Section 10.5
New 33kV Feeder CablesInstall trunk protectionin accordance withSection 10.4
Install Ground Protection inAccordance with Section 10.11Structural Root Zone
(SRZ)
Tree Protection Zone(TPZ) [refer Section 7]
Canopy "Drip-line"
Tree to be transplanted(if required to accomodatebore pit) in accordancewith transplant specification
Tree to be retained andprotected in accordancewith Tree Protection Measures(Section 10)
Tree to be removed inaccordance withSection 10.10
Tree to be pruned inaccordance withSection 10.8
FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 19/03/2019
T50Oriental Plane tree
T49 T48
T47
T51
T43
T42
T41
T52 T40
T39
T38
T53 T37
T36
T54
T46
T45
T44
LondonPlane tree
London Plane tree
LondonPlane tree
London Plane tree
London Plane tree
London Plane tree
London Plane treeLondon Plane tree
London Plane tree
London Plane London Plane treetree
London Plane tree
London Plane treeLondon Plane tree
London Plane tree London Plane tree
London Plane tre
APPENDIX 6 Earthscape Horticultural Services Based on the Aerial Image from NearMap DWG No. T19-011002 [D]Arboricultural and Horticultural Consultants
TREE PROTECTION PLAN PO Box 364BEROWRA NSW 2081Ph: 02 9456 4787
FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 19/03/2019
SHEET 3
Excavations in these areas forfootings and services to beundertaken in accordancewith Section 10.6
LEGEND
Existing buildings & structures to beTree Protection Fence to bedemolished. Demolition workserected in accordance withwithin TPZ's to be undertakenSection 10.3in accordance with Section 10.5
New 33kV Feeder CablesInstall trunk protectionin accordance withSection 10.4
Install Ground Protection inAccordance with Section 10.11Structural Root Zone
(SRZ)
Tree Protection Zone(TPZ) [refer Section 7]
Canopy "Drip-line"
Tree to be transplanted(if required to accomodatebore pit) in accordancewith transplant specification
Tree to be retained andprotected in accordancewith Tree Protection Measures(Section 10)
Tree to be removed inaccordance withSection 10.10
Tree to be pruned inaccordance withSection 10.8
T53
T54
T55
T57T56
London Plane tree
Oriental Plane tree
London Plane tree
IllawarraFlame tree
Oriental Plane tree
APPENDIX 6 Earthscape Horticultural Services Based on the Aerial Image from NearMap DWG No. T19-011002 [D]Arboricultural and Horticultural Consultants
TREE PROTECTION PLAN PO Box 364BEROWRA NSW 2081Ph: 02 9456 4787
FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 19/03/2019
SHEET 4
Excavations in these areas forfootings and services to beundertaken in accordancewith Section 10.6
LEGEND
Existing buildings & structures to beTree Protection Fence to bedemolished. Demolition workserected in accordance withwithin TPZ's to be undertakenSection 10.3in accordance with Section 10.5
New 33kV Feeder CablesInstall trunk protectionin accordance withSection 10.4
Install Ground Protection inAccordance with Section 10.11Structural Root Zone
(SRZ)
Tree Protection Zone(TPZ) [refer Section 7]
Canopy "Drip-line"
Tree to be transplanted(if required to accomodatebore pit) in accordancewith transplant specification
Tree to be retained andprotected in accordancewith Tree Protection Measures(Section 10)
Tree to be removed inaccordance withSection 10.10
Tree to be pruned inaccordance withSection 10.8
APPENDIX 6 Earthscape Horticultural Services Based on the Aerial Image from NearMap DWG No. T19-011002 [D]Arboricultural and Horticultural Consultants
TREE PROTECTION PLAN PO Box 364BEROWRA NSW 2081Ph: 02 9456 4787
FEEDER 7U5, SURRY HILLS Fax: 02 9456 5757 e: earthscape@iinet.net.au DATE: 19/03/2019
SHEET 5
Excavations in these areas forfootings and services to beundertaken in accordancewith Section 10.6
LEGEND
Existing buildings & structures to beTree Protection Fence to bedemolished. Demolition workserected in accordance withwithin TPZ's to be undertakenSection 10.3in accordance with Section 10.5
New 33kV Feeder CablesInstall trunk protectionin accordance withSection 10.4
Install Ground Protection inAccordance with Section 10.11Structural Root Zone
(SRZ)
Tree Protection Zone(TPZ) [refer Section 7]
Canopy "Drip-line"
Tree to be transplanted(if required to accomodatebore pit) in accordancewith transplant specification
Tree to be retained andprotected in accordancewith Tree Protection Measures(Section 10)
Tree to be removed inaccordance withSection 10.10
Tree to be pruned inaccordance withSection 10.8
T58
T59
European Olive T61T62
T60
T63
Oriental Plane tree
SilverDate Palm
SilverDate Palm
European Olive
European Olive
Recommended