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Karangahape Station Early Works Trees and Vegetation Delivery Work Plan

CRL-KRD-RME-LKA-PLN-800007 Revision: Final Date: October 2019

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Trees and Vegetation Delivery Work Plan

Karangahape Station early works Trees CRL-KRD-RME-LKA-PLN-800007

This document is uncontrolled when printed. This document should be printed in colour

Revision Status Revision

Date

Version details

Prepared By

Approved By

30/09/2019

Draft for Auckland Council and Independent Peer Review

Lyndsey Smith

Peter Roan

21/10/2019

Issued to Council for approval

Lyndsey Smith

Peter Roan

Name/Title

Signature

Date

Approval Status

Prepared by:

Angela Chaffe and Lyndsey Smith Environmental Scientist (Ecologist)

21/10/2019

Reviewed by:

Fiona Davies Associate Director - Environment

21/10/2019

Approved by:

Peter Roan Link Alliance â€“ Consents Lead

21/10/2019

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Table of contents 1. Introduction ................................................................................................ 4 1.1

Karangahape Station ......................................................................................................... 4

1.2

Purpose of the Trees and Vegetation DWP........................................................................ 5

1.3

Relevant Conditions .......................................................................................................... 5

1.4

DWP Review and Updates ................................................................................................. 6

2. Karangahape Early Works ........................................................................... 7 2.1

Overview of Works ............................................................................................................ 7

2.2

Construction Methodology ................................................................................................ 7

2.3

Roles and Responsibilities ................................................................................................. 7

3. Affected Trees and Vegetation ................................................................... 9 3.1

Karangahape Early Works .................................................................................................. 9

4. Mitigation Measures ................................................................................. 13 4.1

Trees Requiring Removal ................................................................................................. 13

4.1.1.

Permanent Removal and Replacement ..................................................................... 13

4.1.2.

Transplanting Trees .................................................................................................. 14

4.2

Trees not Requiring Removal........................................................................................... 14

4.2.1.

Tree Protection Zones and Crown Protection............................................................ 15

5. Consultation .............................................................................................. 17 Appendix A: Record of CLG, Independent Peer Review and Auckland Council Comments ....................................................................................................... 18 Appendix B: Location of Impacted Trees........................................................ 21

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1. Introduction The City Rail Link (CRL) project comprises the construction, operation and maintenance of a 3.4 km underground passenger railway, running between Britomart Station and the North Auckland Rail Line (NAL) in the vicinity of Mt Eden Station. The CRL also involves the construction of two new underground stations at Aotea and Karangahape, and a redeveloped Mt Eden Station (refer to Figure 1-1). The design and construction of the CRL infrastructure between the Aotea and Mt Eden Stations is being delivered by the Link Alliance. This Trees and Vegetation Delivery Work Plan (TV DWP) relates to the Karangahape Station Early Works.

Figure 1-1: CRL Route and Location

1.1 Karangahape Station The Karangahape Station consists of two entrances, one at Beresford Square / Pitt Street and the other at Mercury Lane, linked together by platforms with two mined tunnels approximately 32m below Pitt Street. The Station will also comprise equipment rooms, ventilation systems and emergency egress at both Mercury Lane and Beresford Square / Pitt Street. Given the nature and scale of the Karangahape Station construction, works will be undertaken in a staged manner, involving:   

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Early works (demolition, network utility relocation and site establishment works) – to be undertaken from October 2019 through to early 2020; Main construction works (construction of the station and mined tunnels for the rail tracks) – to be undertaken from early 2020 through to late 2023; and Public realm reinstatement – likely to be undertaken from late 2022 to late 2024.

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1.2 Purpose of the Trees and Vegetation DWP In accordance with CRL designation condition 55, this TV DWP has been prepared to identify measures that will be implemented to mitigate and manage the potential adverse effects on trees and vegetation during the Karangahape Station early works. The objective of the DWP (designation condition 55.2) is: ď‚ˇ ď‚ˇ

To avoid the removal of scheduled trees as far as practicable; and Where trees are identified for removal during surface works the Requiring Authority will remedy or mitigate the adverse effects of construction on trees and vegetation.

This TV DWP addresses the requirements of CRL designation condition 55 and will be implemented throughout the construction period. This TV DWP has been prepared in consultation with and feedback from the Karangahape Community and Business Liaison Group (CLG); and has undergone an Independent Peer Reviewer (IPR) prior to submission to Auckland Council (as per designation conditions 7 and 11). A record of consultation outcomes (CLG and IPR) is provided in Appendix A.

1.3

Relevant Conditions

Table 1-1 identifies the designation conditions relevant to this TV DWP and where they are addressed in the document. Table 1-1: Trees and Vegetation conditions and location in the TV DWP

Condition No.

Condition

55.1

A Trees and Vegetation DWP shall be prepared to manage the adverse effects from the removal of trees and vegetation during the construction of the City Rail Link or any part of it.

55.2

The objective of the Trees and Vegetation DWP is to avoid the removal of scheduled trees as far as practicable. Where trees are identified for removal in surface works the Requiring Authority will remedy or mitigate the adverse effects of construction on trees and vegetation.

55.3

To achieve the above objective the following shall be included in the Trees and Vegetation DWP and implemented as required:

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Relevant section of DWP

1.2

(a) Confirmation of the trees to be removed due to surface construction works and whether it is appropriate and feasible to relocate or store these trees for replanting. The removal of scheduled trees which form a significant group should only be undertaken as a last resort;

Sections 3 and 4.1

(b) A list of trees, which due to being in proximity to construction works, have root systems and / or foliage within and / or overhanging the surface designation footprint, and the methods to be used, where practicable, to protect these trees from construction works;

Section 3

(c) Cross references to the Urban Design DWP and the proposed mitigation of any tree / vegetation removal through replanting trees at a 1:1 ratio, reinstatement of the area, and other methods. In preparing the Trees and Vegetation DWP, the Requiring Authority shall seek input from the Auckland Council Parks Department with regard to tree species / vegetation selection, tree pit construction where deemed necessary, and the positioning of

Section 4.1.1

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Condition No.

Condition

Relevant section of DWP

replacement trees and from directly affected land owners with regards to preferences for any replacement planting for vegetation / trees removed from private property or for any replacement planting on private property;

1.4

(d) Other methods to be used to monitor and report on the management of the adverse effects from tree / vegetation removal;

Section 4.1.2 and 4.2

(e) Cross references to the specific sections in the Communication and Consultation Plan which detail how the Auckland Council Parks Department, mana whenua (see condition 8) are consulted, and communication with the general public on the management of the adverse effects relating to the removal of trees and vegetation.

Section 5

DWP Review and Updates

This TV DWP is a live document that will be reviewed at least annually, or as a result of a material change to the project, or to address unforeseen adverse effects on trees and vegetation arising from construction, or unresolved complaints. Any material changes to this TV DWP must be approved by Auckland Council prior to any on-site activity reliant upon the change commencing. Refer to the CEMP for further detail on the review and updating process.

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Karangahape Early Works 2.1 Overview of Works

Early works will be undertaken to establish the site of the new Karangahape Station in advance of the main construction works. The early works are detailed in the CEMP with an overview provided in Table 2-1. Table 2-1: Overview of Karangahape Early Works

Works location

Overview of construction activities

Beresford Square / Pitt Street

 Relocation of network utilities located within the footprint of the new Karangahape Station in Beresford Square / Pitt Street;  Removal of street trees that are compromised by the proposed combined service trench;  The demolition of the café / toilet in Beresford Square;  Establishment of the Beresford Square Construction Support Area to provide site offices, construction vehicle parking, laydown areas and storage of plant and equipment etc.; and  Closure of Beresford Square to vehicle traffic (other than construction traffic) while retaining pedestrian and cycle access. Removal of existing street furniture where required (such as seating, street lighting (to be replaced with temporary lighting).

Mercury Lane

 Relocation of network utilities located within the footprint of the new Karangahape Station in Mercury Lane; and  Establishment of the Mercury Lane Construction Support Area within to provide site offices, construction vehicle parking, laydown areas and storage of plant and equipment etc.; and  Construction of the Mercury Lane temporary working platform.

It should be noted that the demolition of buildings and above ground structures within the Mercury Lane Construction Support Area, along with the removal of trees within the demolition area, is authorised by the CRL Enabling Work Outline Plan – Karangahape Road Demolition Works (Auckland Council reference OPW60339200), confirmed by Auckland Council in June 2019, and does not form part of this TV DWP.

2.2 Construction Methodology The Karangahape Station Early Works will be divided into stages as described in the CEMP.

2.3 Roles and Responsibilities The key personnel responsible for this TV DWP are identified in Table 2-1. All site personnel are also responsible for following the requirements of the TV DWP. Refer to the CEMP for further detail on roles and responsibilities.

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Trees and Vegetation Delivery Work Plan Table 2-2: Key Personnel

Role

Name

Karangahape Station Project Manager

Jonathan Hill

Karangahape Station Construction Manager

Dan Trotman

Environmental and Sustainability Manager

Sarah Sutherland

Link Alliance Communications and Engagement Manager

Rachel Blundell

Project Arborist

TBC

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3. Affected Trees and Vegetation A Tree Assessment1 was prepared in August 2012 and formed part of the original Notice of Requirement (NoR) for establishing the CRL designations. The assessment found that there are no scheduled trees within or near the construction footprint of Karangahape Station.

3.1 Karangahape Early Works In total, 20 trees were identified as potentially being impacted by the Karangahape Station early works: 



Three of these trees (T146, T147 and T149) were identified during the initial Tree Assessment1 and are located at the corner of Beresford Square and Pitt Street. Tree T149 will require removal to enable the utility relocation works. T146 and T147 will be retained. During the Early Works, traffic will be diverted to run immediately adjacent to these trees (T146 and T147), through an area which is currently in use as a bus stop and for on street parking. As these trees are currently maintained by Auckland Transport to allow bus access, it is not considered that the proposed works will have additional impacts on these trees (canopy or roots) (refer to Figure 3-1). It should be noted that T148 has been removed prior to the commencement of CRL works at the site of the new Karangahape Station (refer Table 3-1). Eleven trees (X6-X16) in Beresford Square2, between the Hopetoun Alpha building and Pitt Street, will need to be removed to enable the utility relocation works in this area, which requires the formation of a combined open trench within the footprint of the trees. It is also noted that these trees are within the footprint of the Karangahape Station main construction works. Five trees (X17-X21) in Beresford Square will be retained. However, due to their location adjacent to the Beresford Square Construction Support Area (CSA), which will be accessed by large construction related vehicles, there is a risk that their canopy could be impacted.

The location of the impacted trees is shown in Figure 3-1 and further context is shown in Appendix B. Table 3-1 provides a summary of the trees that could be impacted by the works and proposed mitigation measures. It should be note that: where relevant, the tree numbering presented in this TV DWP is consistent with the Tree Assessment1. Where it has been determined that there is the potential for additional trees (to those highlighted within the Tree Assessment) to be impacted by the works, these have been numbered using a different reference system (X1 etc). The numbering system is continuous through each of the CRL TV DWPs prepared to date. Therefore, the numbering of additional trees potentially impacted by the works starts at X6 for the purpose of this Karangahape Station early works TV DWP.

Boffa Miskell. (2012). City Rail Link Tree Assessment. Report prepared for Auckland Transport, dated August 2012. ‘Additional Tree Assessment to Support C3 Utility Relocation Works - Beresford Square, letter from Angela Chaffe of AECOM New Zealand Limited to Rachel Purdy (Link Alliance), dated 23 July 2019. Page 9 | Karangahape Station Early Works 2

Trees and Vegetation Delivery Work Plan

Figure 3-1: Illustrating tree trimming undertaken on T146 and T147 for the bus stop.

Figure 3-2: Trees on Beresford Square and Pitt Street that could be Impacted by Karangahape Station Early Works

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Trees and Vegetation Delivery Work Plan Table 3-1: Identified Trees Impacted by Karangahape Station Early Works

Tree ID

Common name

Botanical name

Scheduled

Overall condition

T146

Pohutukawa

Fair

T147

Pohutukawa

Good

T148

London Plane

Metrosideros excelsa Metrosideros excelsa Platanus x acerifolia

Estimate height (m) 4

Project effect

Mitigation measures

To be retained To be retained Removal

Good

Removal

Good

Removal

Platanus x acerifolia

Fair

Removal

Brush box

Lophostemon confertus

Good

Removal

Pohutukawa

Metrosideros excelsa

Good

Removal

X10

Rewarewa

Knightia excelsa

Fair

Removal

X11

Oriental plane

Platanus orientalis

Good

Removal

X12

Oriental plane

Platanus orientalis

Good

Removal

X13

Rewarewa

Knightia excelsa

Fair

Removal

X14

Pohutukawa

Metrosideros excelsa

Good

Removal

X15

Pohutukawa

Metrosideros excelsa

Good

Removal

X16

Pohutukawa

Metrosideros excelsa

Poor

Removal

None required. Refer to Section 4.2 None required. Refer to Section 4.2 Tree removed prior to CRL works by the Link Alliance / CRLL. Transplant not possible. Tree to be replaced as part of public realm reinstatement Transplant not possible. Tree to be replaced as part of public realm reinstatement Transplant not possible. Tree to be replaced as part of public realm reinstatement Transplant not possible. Tree to be replaced as part of public realm reinstatement Replant (if practicable); refer to Section 4.1.2. Otherwise tree to be replaced as part of public realm reinstatement Replant (if practicable); refer to Section 4.1.2. Otherwise tree to be replaced as part of public realm reinstatement Transplant not possible. Tree to be replaced as part of public realm reinstatement Transplant not possible. Tree to be replaced as part of public realm reinstatement Replant (if practicable); refer to Section 4.1.2. Otherwise tree to be replaced as part of public realm reinstatement Replant (if practicable); refer to Section 4.1.2. Otherwise tree to be replaced as part of public realm reinstatement Replant (if practicable); refer to Section 4.1.2. Otherwise tree to be replaced as part of public realm reinstatement Replant (if practicable); refer to Section 4.1.2. Otherwise tree to be replaced as part of public realm reinstatement

Fair

T149

London Plane

Platanus x acerifolia

London Plane

Platanus x acerifolia

London Plane

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Trees and Vegetation Delivery Work Plan Tree ID

Common name

Botanical name

Scheduled

Overall condition

X17

Pohutukawa

Good

X18

Pohutukawa

Good

X19

Pohutukawa

Poor

X20

Pohutukawa

Fair

X21

Pohutukawa

Metrosideros excelsa Metrosideros excelsa Metrosideros excelsa Metrosideros excelsa Metrosideros excelsa

Estimate height (m) 7

Good

Project effect

Mitigation measures

To be retained To be retained To be retained To be retained To be retained

Tree Protection. Refer to Section 4.2 Tree Protection. Refer to Section 4.2 Tree Protection. Refer to Section 4.2 Tree Protection. Refer to Section 4.2 Tree Protection. Refer to Section 4.2

As previously noted, none of the trees within the early works area are scheduled under the Auckland Unitary Plan (Operative in part). Despite this, consideration has been given to the feasibility of replanting all trees planned for removal. Due to the location of existing utilities, it is considered unsafe and impractical to extract intact root balls to enable transplantation of T149, X6, X7 and X8. Trees X9, X10, X13, X14, X15 and X16 are native specimens and opportunities to replant these trees are under investigation. However, this will depend on whether relocation is appropriate and feasible (considering matters such as, tree condition and structure, ground conditions, the location of utilities in relation to tree roots, time of the year and potential relocation costs). Where relocation is determined to be appropriate and feasible, the trees will be relocated to elsewhere within the designation footprint, if practicable. It is noted that the early works in Mercury Lane will not impact any vegetation - vegetation within the Mercury Lane CSA will be removed as part of the Mercury Lane demolition works Outline Plan (refer to Section 2.1 of this DWP) and no street trees will be impacted by the utility works.

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4. Mitigation Measures As outlined in Section 3, the Karangahape Station early works could impact on 21 trees within and adjacent to Beresford Square and Pitt Street. In order to mitigate the effects of tree removal on the local streetscape and prevent further loss or damage to impacted trees, the following mitigation measures will be implemented during the works.

4.1 Trees Requiring Removal Trees T149, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15 and X16 will likely need to be removed during the early works. Removal of these trees will be undertaken by a suitably qualified and experienced arborist.

4.1.1. Permanent Removal and Replacement Due to the location of existing underground utilities it will not be practical to relocate trees T149, X6, X7, X8, X11 and X12. As such, these trees will require removal prior to the commencement of the utility relocation works. The method for removal of these trees will be informed by a qualified arborist in accordance with site observations, such as the proximity of surrounding buildings, tree size and overall condition, and expert knowledge. The methodologies used may include the following:   

Staged removal whereby the outer limbs are removed first, followed by inner limbs and the main trunk. Depending on the location of utility lines, tree stumps shall either be dug out or ground in situ. Removed tree debris will either be mulched onsite or removed for mulching off-site, depending on which is more practicable.

All trees permanently removed as part of the early works will need to be replaced to address adverse effects on amenity and the local streetscape. If the future public realm reinstatement design allows, replacement trees for those removed in Beresford Square will be planted in the square as part of the site’s reinstatement. If this is not possible, replacement trees will be planted in an appropriate location elsewhere within the CRL designation. The locations of replacement trees will be included in a replanting plan prepared as part the Urban Design DWP3 for the Karangahape Station public realm reinstatement. The Urban Design DWP and replanting plans will consider the following in accordance with designation Condition 55.3(c):    

Replanting of removed trees at a ratio of at least 1:1. The species and characteristics of replacement trees will be determined following input from Auckland Council Parks Department. Design for re-instatement of Beresford Square, including opportunities to replace removed trees with appropriate native species. Document input from the Auckland Council Parks Department with regard to tree species / vegetation selection, tree pit construction and positioning of replacement trees.

The Urban Design DWP will be prepared at some time in the future, when public realm designs have been finalised Page 13 | Karangahape Station Early Works

Trees and Vegetation Delivery Work Plan 



An outline of the maintenance periods and responsibilities for care of the trees (i.e. maintenance is to be undertaken by the Requiring Authority for a period of five years for specimen trees and 3 years for all other landscape planting). Any consultation undertaken in relation to the replacement planting (refer to Section 5 of this TV DWP).

4.1.2. Transplanting Trees As outlined in Section 3.1, if it is appropriate and feasible to relocate trees X9, X10, X13, X14, X15 and X16, the transplanting of these trees will be undertaken in a manner that allows them to be replanted within the designation area following the completion of main construction works or at another suitable location to be determined in consultation with the Auckland Council Parks Department. Tree relocation methodologies generally follow a set process and shall be informed by a qualified arborist. However, if replanting is considered a feasible option, the relocation of these six trees should consider the following:  



Timing of works – Removal should ideally occur outside of active growth stages, after flowering or before flower budding, if practicable. Temporary storage site – this will need to be identified prior to removing the trees. The site must have a hardstand area large enough to house the trees, with a water connection; and be in or near the CBD to allow easy transport. Preparation – prior to being dug out, the trees will need to be pruned and any remaining branches tied back to protect them during the relocation process. A trench will need to be dug around the root balls and outer roots trimmed as required. The trench will need to be deep and wide enough to allow the root balls to be undercut at a 45-degree to allow its extraction. Transport – The root balls will need to be covered in damp hessian/burlap to keep as much of the root balls and soil in tact during transport. The trees will need to be removed using a digger or small crane and transported, in an upright position, using a flatbed truck. Storage – the trees will need to be transferred to temporary planter boxes large enough to contain the root ball and support the tree during storage. The planter should be kept in a cool, shaded place and the roots kept moist until it can be replanted. Replanting – once the relocation site has been identified, replanting will need to be undertaken within a similar window in which the tree is ‘dormant’. The replanting locations should be included in the replanting plans prepared as part the Urban Design DWP.

If these trees cannot be relocated, they will need to be replaced in accordance with the criteria described in Section 4.1.1.

4.2 Trees not Requiring Removal Trees T146 and T147, located on the footpath on the eastern side of Pitt Street will not be removed as part of the Karangahape Station early works. However, to provide sufficient working area for the relocation of utilities within Pitt Street, southbound vehicle traffic (heading along Pitt Street towards Karangahape Road) will temporarily use the outermost traffic lane (closest to the footpath) that currently provides for on-street parking and a bus stop. The use of this lane adjacent to the Trees T146 and T147 as a bus stop means that Auckland Transport regularly undertake maintenance and Page 14

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Trees and Vegetation Delivery Work Plan trimming of these trees. Therefore, it is not considered that the temporary alteration in the Pitt Street traffic layout during the early works will impact further on these trees. Trees X17 – X21, located within Beresford Square adjacent to the Beresford Square CSA, will be retained. However, there is the potential for these trees to be impacted as a result of truck and other large vehicle movements accessing the CSA. The trees at greatest risk of impact are X17, X18 and X19, closest to the vehicle entrance, staff facilities and indicative location of storage areas (including the surge pile and water treatment area that will be operational during the main works construction phase). X17 and X18 were assessed to be in good condition while X19 was in poor condition.

4.2.1. Tree Protection Zones and Crown Protection Tree Protections Zones around trees X17 – 21 shall be established to ensure the trunks, roots, canopy and branches are protected during the early works. The Tree Protection Zone encompasses the root and crown area of the tree that would need to remain isolated from construction disturbance to maintain tree health. The height of the Protection Zone is dictated by the height of the tree and the width (or radius) around the tree is typically calculated by multiplying the tree’s diameter at breast height (DBH) by 12 (AS 4970-2009): Tree Protection Zone = DBH x 12 The Tree Protection Zone will not be less than 2m nor greater than 15m, except where crown protection is required. If a tree is multi-stemmed at 1.4m above the ground (refer to Figure 4-1) the Australian Standard (AS4970-2009) indicates that in this situation the following equation should be used to determine the DBH, which would then feed into the equation above to calculate the Tree Protection Zone:

Figure 4-1: Tree forks below 1.4m where the arborist would measure DBH (AS4970-2009).

The information needed for this calculation has not been collected within the original arboricultural assessment of trees (Boffa Miskell, 2012), therefore, a site visit will be completed to obtain the measures needed to determine the Tree Protection Zone. Crown protection will also be required to ensure that the trees do not receive injury from machinery such as excavators, drilling rigs, cranes, trucks and hoarding installation. Crown protection will be located 1m outside of the perimeter of the crown, which may be within the Tree Protection Zone. Page 15

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Figure 4-2: Indicative Tree Protection Zone (AS4970-2009).

The following activities will not be permitted in the Tree Protection Zones:       

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Mechanical excavation on the road, footpath or any public space. Stockpiling of building materials, debris or soil. Vehicular traffic except on existing paved surfaces. Installation of service pits or hatches. Vehicular crossings. Severing of tree roots with a diameter greater than 30mm. Alteration of soil levels and structure.

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5. Consultation The early works Communication and Consultation Plan (CCP) (Appendix L of the CEMP) outlines the engagement to be undertaken with the Auckland Council Parks Department and mana whenua. It also details the general communication that will be undertaken with the general public (through the CLG) on the management of the adverse effects relating to the removal of trees within the Enabling Works area. Refer in particular to Sections 6 and 7 of the CCP.

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Appendix A: Record of CLG, Independent Peer Review and Auckland Council Comments

A1. CLG Comments A Karangahape CLG meeting was held on 17th September to discuss the Karangahape early works and for the CLG to provide comments / feedback on the CEMP and sub-plans, including this TV DWP. No comments were received in relation to this TV DWP.

A2. Independent Peer Review Comments An Independent Peer Review of the draft TV DWP was undertaken by Jon Redfern, from Arborlab. The comments received are as follows: Page no.

DWP section

Paragraph/ sentence

Comment

Resolution

7 8

2.1 3.1

N/A

Peer reviewer added additional text.

Text provides further clarity relating to why trees need to be removed e.g. conflict with new services.

3.1

Trees T148 and T149 will require removal to enable the utility relocation works

Most of the trees are proposed to be removed due to the relocation of the services, however, there’s no information on how the relocation works directly compromise the trees.

The TV DWP cross references the CEMP, which includes staging plans that illustrate how the services are to be relocated.

3.1

Trees T148 and T149 will require removal to enable the utility relocation works

I think there needs to be more information on exactly how these works will have any impact and if are there any alternatives that could be used to retain them. In particular the two mature London Plane trees (T149 and X6) should be retained if at all possible.

T149 and X6 will be directly impacted by trenching works required to install dry services.

3.1

T148 condition assessment presented in Table 3-1.

Tree No.148 has been removed and I have a slightly different assessment on the trees’ overall health (though I’m generally ok with their original assessment).

Table 3-1 updated to reflect that the tree has previously been removed and will not be impacted by the early works. Reference to T148 has then been subsequently removed from the text.

8 8 / 10 12

3 3.1 4.1.1

Exotic trees.

Exotic trees are afforded the same protection standards as native trees. I don’t think that it’s appropriate that one of

The reason for tree removal is the need to relocation utility services. Therefore, any reference to trees being exotic has been removed.

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Page no.

DWP section

Paragraph/ sentence

Comment

Resolution

the reasons for tree removal is due to origin. 10

3.1

Large trees.

The relocation of large trees is possible, though in an urban setting such as this it can be problematic. Maybe this is better – ‘Due to … ,it is impractical to extract and store the trees onsite or relocate through the city, and there are no practical, longterm storage facilities’.

The reason that the trees can not be relocated is due to the presence of existing services and because of the trees size it is more likely that their root ball will have become entwined with the service. However, the main reason for not translocating trees is the services - the text has been updated in this regard.

3.1

Reasons why trees may not be relocated.

A couple of these trees are not worth relocating due to their structure.

Section 3.1 updated to include the peer reviewer comments on the structure and quality of trees that are not proposed to be relocated.

4.2.1

Calculation for multi-stem trees.

The correct calculation for multiple stems as detailed in the Australian Standards. This should be used for consistency and reliability.

Section 4.2.1 has been updated to follow the guidelines within AS49702009 for multi stemmed trees.

A3. Auckland Council Comments Comments on the draft TV DWP were received from Howell Davis, Senior Specialist – Urban Forest, Auckland Council as follows: Page no.

DWP section

Paragraph/ sentence

Comment

Resolution

3.1

The tree numbering system used in this plan is consistent with that used in the Tree Assessment and previous TV DWPs prepared for earlier CRL works.

The plans and numbering for the trees needs to be tidied up, there are two numbering systems now being used in the documents and one that refers to the original Boffa Report that had a tree survey of the route and now we have localised numbering for this part of the route where additional trees are now noted as being necessary to remove for site establishment and for utility relocation work.

Further clarification has been provided in Section 3.1 on the numbering system used in this TV DWP.

3.1 and Appendix C (now Appendix B)

Figures

I would recommend that a more detailed plan is developed for the trees in the area around the Beresford/Pitt Street and K road/Canada Street Stations, as there are trees in the vicinity of works on both these streets which are not noted on the current plans as needing protection. It would be a lot easier to deal with what is being removed and what is going to be fenced and protection provided if all trees were numbered.

Figures have been updated as requested and include the additional street trees in Beresford Square that will be subject to Tree Protection

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Page no.

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DWP section

4.1.1

Paragraph/ sentence

Tree replacement will be presented in the Urban Design Delivery Work Plan.

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Comment

Resolution

The trees on Beresford at entrance to the new site yard should be protected if this access is going to be used by larger vehicles as it is currently only being used by passenger vehicles.

during the early works.

The removal of trees outside of the original proposal can be dealt with via condition 55, however it is also recommended that further references are made to the more immediate need to look at the Streetscape (Urban Design DWP) and public realm reinstatement works in both of these areas to ensure that sufficient space is allowed for to enable the replanting of the tree 14 trees that are likely to be removed during this part of the project. It is recommended that the proposed utility relocation work is vetted by the wider team who are involved in the streetscape and Urban Design DWP to ensure that sufficient space is provided to enable the planting of at least 14 new large replacement trees. Utilities should be combined into one service trench wherever possible and outside of the alignment of where any possible tree planting may take place.

Noted. Development of the network utility relocations and the future public realm reinstatement design by the Link Alliance will be undertaken cognisant of providing sufficient space for vegetation to be planted as part of the reinstatement works.

Trees and Vegetation Delivery Work Plan

Appendix B: Location of Impacted Tree

Page 21

| Karangahape Station Early Works

ISO A1 594mm x 841mm

LEGEND: DESIGNATION BOUNDARY

TREES IDENTIFIED IN THE INITIAL ASSESSMENT ADDITIONAL IMPACTED TREES

TUNNEL COVER AREA TUNNEL MINE AREA

TBM TUNNEL

UN ST

CANTEEN

STORAGE

Last saved by: JOSEPH.DELATORRE(2019-10-17) Last Plotted: 2019-10-17 Filename: AECOM_DS10_AU\Documents\60604837-CRL C3-Alliance Detail Design\DesignJV\900 CAD-GIS\01_WIP\25-SKETCHES\CRL-KRD-URB-LKA-SKE-000002

HOPET O

STORAGE OFFICES

CHANGING ROOMS\ TOILETS\ SHOWERS

HOPETOUN ALPHA

WATER TREATMENT AREA

STORAGE

CAR PARK SURGE PILE OFFICES

OFFICE

PEDESTRIAN ENTRANCE

X20

2.5

X18

X19

X17

X13

X15

X16

X12

BERESFORD SQUARE

10m

SCALE 1:250

Link Alliance has prepared this document for the sole use of the client and for a specific purpose, each as expressly stated in the document. No other third party should rely on this document without the written consent of Link Alliance. Link Alliance undertakes no duty, nor accepts any responsibility, to any third party who may rely upon or use this document.

CREATOR ID : 70

100mm

SIZE A1

FOR INFORMATION APPROVED

PROJECT:

CHECKED DESCRIPTION

APPROVED

DATE

TITLE: DATE

A. CHAFFE

This drawing is confidential and shall only be used for the purpose of this project. The signing of this title block confirms the design and drafting of this project have been prepared and checked in accordance with the Link Alliance quality assurance system to ISO 9001-2000.

CITY RAIL LINK KARANGAHAPE STATION

ZONE:

DRAWN J DELA TORRE

REV

COMPANY NUMBER : 6267870

SCALE AS SHOWN

DESIGNED REVISIONS

CLIENT:

KARANGAHAPE STATION PITT STREET TREE AND VEGETATION DWP PROJECT

DOCUMENT:

ZONE

DISCIPLINE

ORGANISTION

TYPE

SHEET

CRL - KRD - URB - LKA - SKE - 00002

REVISION

POYNTON TERRACE

ISO A1 594mm x 841mm

40-50 50

LEGEND:

239

DESIGNATION BOUNDARY

TREES IDENTIFIED IN THE INITIAL ASSESSMENT 238

76 80-86

ADDITIONAL IMPACTED TREES TUNNEL COVER AREA TUNNEL MINE AREA

T146

TBM TUNNEL

PE R

T147

KAR A NG

A HA

PITT ST

MERCU RY LAN

T148

246-254

T149

61-65

243

4-6

OR D

256

BE RE SF

X6 258 8-10

249

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268 259-261

12-14

X11

ANG A

KAR

X10

X13

270

HAP E

X12

16-18

278

267-281

X15 284

15-25

X16

290

X14

283-287

X21 2.5

22-28

10m

SCALE 1:250

292-300

CREATOR ID : CRL_KRD_630_00_LKA_SKE_000001

100mm

SIZE A1

FOR INFORMATION APPROVED

PROJECT:

CHECKED DESCRIPTION

APPROVED

DATE

CITY RAIL LINK KARANGAHAPE STATION

ZONE:

DRAWN

TITLE:

J. DELA TORRE

REV

COMPANY NUMBER : 6267870

SCALE AS SHOWN

DESIGNED REVISIONS

CLIENT:

KARANGAHAPE STATION TREE AND VEGETATION DWP

DATE

A. CHAFFE

PROJECT

DOCUMENT:

ZONE

DISCIPLINE

ORGANISTION

TYPE

SHEET

CRL - KRD - URB - LKA - SKE - 000001

REVISION