Construction management environmental plan

Quality Management Plan Document Version 9

1 AAhAuChoose a building block.

Auckland City Rail Link Contract 6 – Nikau St Stormwater Main

Realignment

Construction Environmental Management Plan

March 2018 Revision 9 i

Amended CEMP

Project C6 Revision 8.3.18

Quality Management Plan Document Version 9

City Rail Link Construction Works C1

Document Preparation and Control

Document Review

Graeme Inglis - PM

Martin Hughes – NR Manager

Document Approval

Signature

Andy March

Project Document Version

Date

Original CEMP (lodged with reference design Outline Plan and resource consents) prepared by Aurecon

Rev 5, 12 December 2016

CEMP updated (non-material changes) to reflect demolition and extension of CSA at 28 Mt Eden Road, prepared by Aurecon CEMP updated (non-material changes) to reflect MBJV revised construction design and methodology, prepared

by Beca

Rev 8, 8th August 2017 Rev 9, 8 th March 2018

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Introduction 1.1

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1.2

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1.3

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1.4

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1.5

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1.6

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Purpose of the CEMP

CEMP Structure and Context Environmental Sub-Plans

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2.3

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2.4

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2.5

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2.6

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Development of the CEMP and Sub-Plans Mana Whenua

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CRL Overview

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Nikau Street Stormwater Main Realignment

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3.2

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3.3

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3.4

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Project Programme

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Hours of Operation

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Site Layout and Management

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4.2

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4.3

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4.4

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4.5

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Environmental Risk Register Cumulative Effects

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5.2

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5.3

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5.4

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5.5

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5.6

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Environmental Roles and Responsibilities Environmental Training and Induction Operating Procedures

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Emergency and Incident Response

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Communication and Interface with Stakeholders

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Environmental Monitoring Environmental Auditing

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Environmental Inspections

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Corrective and Preventative Action Reporting

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Legislative and Other Requirements

Monitor and Review 5.1

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Construction Activities and Associated Environmental Receivers

Implementation and Operation 4.1

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Construction Methodology

Social and Environmental Management 3.1

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Designation Conditions

Project Description 2.1

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Document Control

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CEMP Review

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Amended CEMP

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Appendices Appendix A: Designation Conditions Appendix B: Site Layout Plans Appendix C: Erosion and Sediment Control Plans Appendix D: Transport, Access and Parking Delivery Work Plan Appendix E: Construction Noise and Vibration Delivery Work Plan Appendix F: Historic Character Delivery Work Plan Appendix G: Trees and Vegetation Delivery Work Plan Appendix H: Contaminated Delivery Work Plan / Contaminated Soils Management Plan Appendix I: Air Quality Delivery Work Plan / Air Quality Management Plan Appendix J: Communication and Consultation Plan Appendix K: Record of CLG and IPRP feedback on the CEMP Appendix L: Addendum to Delivery Work Plans

Figures

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Figure 1 CRL route and location Figure 2 Nikau Street Stormwater Main Realignment. The new pipe is shaded in red and the Construction Support Areas (CSA’s) are shaded in blue.

Figure 3 Gross Pollutant Trap locations Figure 4 Project footprint showing works outside the designation (in red) Figure 5 GPT locations outside the Designation on Boston Road.

Figure 6 Document structure for Outline Plan, Resource Consents and Sub-Plans Figure 7 Water Street shaft – indicative piling details Figure 8 Huia No. 2 Water Main – Indicative protection details Figure 9 Utilities – Mt Eden Road shaft Figure 10 Utilities – Water Street shaft Figure 11 Utilities - Nikau Street shaft Figure 12 Indicative pipe jacking launch site setup with slurry TBM Figure 13 Indicative site layout for Mt Eden site Figure 14 Indicative site layout for Nikau Street site Figure 15 Indicative site layout for Water Street site U4 3T

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Tables

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Table 1 Sub-Plans attached to the CEMP 8 Table 2 Designation conditions from the CRL designation relating to the CEMP 111 Table 3 Utilities - Mt Eden Road shaft 22 Table 4 Utilities – Water Street shaft 22 Table 5 Utilities – Nikau Street shaft 24 Table 6 Earthworks volumes 34 Table 7 Project programme 35 Table 8 Construction support areas 39 Table 9 Construction activities and receiving environment 41 Table 10 Key national legislation, regulations and standards 43 Table 11 Summary of the standards, guidelines and specific statutory requirements associated with environmental aspects and detailed in the CEMP Sub-Plans 44 Table 12: Specific roles and responsibilities 48 Table 13: Environmental incident notification 58 Table 14 Collaborative working contacts 60 U 43T

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Amended CEMP

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Glossary of Terminology The following terms have been used throughout the document and are listed below for reference.

Term Alignment Bored Pile

Consolidation

Consolidation settlement Construction Contractor Designation conditions Enabling works Engineer Gravity Diversion Ground anchors Groundwater Mined tunnel

Pipe jacking Principal Technical Adviser Project criteria Sensitive structures

Shafts Slurry

Slurry system Sub-Plans Spoil Tunnel boring machine Water table

Meaning The horizontal and vertical position of the pipe or the CRL tunnels.

A reinforced concrete pile which is constructed by excavating a vertical column of soil or rock, and cast in the ground using a casing or slurry for ground support.

A process by which water saturated soil reduces in volume due to load application or lowering of groundwater level that causes the water to be squeezed/ removed out and the soil settles.

Space deformation induced by consolidation (see ‘consolidation’ above).

The contractor who is awarded the construction contract for the Project.

This is yet to be confirmed.

The set of condition applied to the CRL designation which outline the compliance framework for the project (see Appendix A) Works carried out in advance to facilitate ease of permanent works construction.

The owner or an entity acting on behalf of the owners to approve and review the works.

Where water flows are controlled by changes in elevation (gravity).

Steel tendons installed in the ground to provide support to ground retaining structures.

Water located in pore spaces within the soil mass.

Tunnelling method utilising a road header, by hand (for small excavations), or similar technology to create open underground space combined with steel and concrete lining systems and rock bolting installed in a predetermined sequence.

A trenchless installation method where pipes are horizontally driven between two vertical shafts.

The Principal Technical Adviser to CRLL for this Project is Aurecon New Zealand Limited.

The performance standards, both national and international that are recommended for use in the Project.

Structures susceptible to ground movements due to tunnel excavations and other construction activities. For the purpose of this assessment, this has been defined as all buildings constructed with unreinforced masonry.

Underground structures excavated from the surface for permanent or temporary access.

Water-based fluid containing suspended solids used to provide fluid pressure and spoil transport in slurry tunnelling machines, and lubrication and soil conditioning in pipe jacking.

A type of TBM in which the earth and groundwater pressures are counterbalanced by pressurised slurry to prevent heave or settlement.

The suite of Management Plans, Delivery Works Plans and Site Specific Plans which outline how the effects of the Project will be managed.

Excavated material.

A mechanically operated machine used to excavate a tunnel with a circular cross section through a variety of ground strata.

The level below which the ground is saturated with water.

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Amended CEMP

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Quality Management Plan Document Version 9

Glossary of Abbreviations and Units The following terms have been used throughout the document and are listed below for reference.

Acronym AC AEE AT CAR CBD CCP CDWP CEMP CLG CNVDWP CRL DCR DSI DWP ECBF ECBF ER ECBF EU ECBF EW EFC EHS ERP ESA ESCP ESM GIS Ha HAIL HC DWP Heritage NZ HNZPT Act HSMP HVAC MP N/A NAL NESAQ NESsoil NoR OHLE RMA SSMP TA TAPDWP TBM TP90 TVDWP

Meaning Auckland Council Assessment of Environmental Effects Auckland Transport (applicant and requiring authority for CRL) Corridor Access Request Central Business District Communication and Consultation Plan Contaminated Delivery Work Plan Construction Environmental Management Plan Community Liaison Group Construction Noise and Vibration Delivery Work Plan City Rail Link Design and Construction Report Detailed Site Investigation Delivery Work Plan East Coast Bays Formation Residual soil/ completely weathered ECBF Unweathered ECBF Weathered ECBF East Facing Connection Environmentally Hazardous Substances Emergency Response Plan Environmental Site Assessment Erosion and Sediment Control Plan Environment and Sustainability Manager Global Information System Hectare Hazardous Activities and Industries List Historic Character Delivery Work Plan Heritage New Zealand Heritage New Zealand Pouhere Taonga Act 2014 Hazardous Substances Management Plan Heating Ventilation and Air Conditioning Management Plan Not Applicable North Auckland Rail Line Resource Management (National Environmental Standards for Air Quality) Regulations 2004 Resource Management (National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health) Regulations 2011 Notice of Requirement Over Head Lines Equipment Resource Management Act 1991 Site Specific Management Plan Tauranga Group Traffic Access and Parking Delivery Work Plan Tunnel Boring Machine Auckland Council Technical Publication No. 90 - Erosion and Sediment Control Guidelines for Land Disturbing Activities in the Auckland Region 1999 Trees and Vegetation Delivery Work Plan

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Quality Management Plan Document Version 9

1

Introduction

This Construction Environmental Management Plan (CEMP) is submitted in support of the Outline Plan and Resource Consent application to Auckland Council (AC) for the realignment of a stormwater main which currently runs along Nikau Street in the suburb of Mount Eden in Auckland.

City Rail Link Ltd, as the requiring authority, currently holds a designation for the construction of the City Rail Link (CRL) project (and the relocation of utilities) for these works. Some work areas required for this stormwater realignment sit outside the designation. This CEMP covers all works both inside and outside the existing CRL designation.

The Nikau Street Stormwater Main Realignment (the Project) involves the construction of a replacement stormwater main to move it westward towards the existing railway line. The current alignment of the stormwater main conflicts with the proposed alignment for the CRL rail tunnels and needs to be relocated to enable construction of the tunnels.

The realigned stormwater main will be constructed using the pipe jacking method, where pipes are horizontally driven between vertical shafts. Figure 1 shows the proposed route for the CRL, and Figure 2 shows the extent of the Nikau Street Stormwater Main Realignment works.

The Project also requires the installation of three Gross Pollutant Traps (GPT’s). These GPTs will be located within the road reserve, with two GPT’s being located on Boston Road and one on Normanby Road (Figure 3).

The development and implementation of this CEMP and Sub-Plans is required by the CRL designation conditions. AC will certify this CEMP prior to the commencement of construction, at which point compliance with the CEMP is mandatory. Construction will not commence on site until certification of this CEMP is obtained from AC. This CEMP was prepared by Aurecon for CRLL in early 2017 for the reference design stage and was approved by AC as part of the original resource consent and outline plan process. The reference design stormwater alignment that the original CEMP was based on is shown in blue at Figure 2 below.

The CEMP has now been updated by the Contractor, March Bessac Joint Venture (MBJV), as its operational document to reflect the revised construction design and methodology. The MBJV amended alignment is shown in red in Figure 2 below. A revised project description incorporating the updates to the design and construction methodology is provided for in Appendix L to replace all project descriptions in the various delivery work plans.

The CEMP provides the overarching framework for the management of construction effects associated with the Project. Further Sub-Plans are included as appendices to the CEMP. These Sub-Plans detail the specific environmental management controls for particular aspects of the Project.

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Fig 1: CRL route and location

Figure 2 Nikau Street Stormwater Main Realignment. The reference design is shaded blue and the Construction Support Areas (CSA’s) are shaded in blue and orange. The MBJV amended (26/2/18) alignment is in red.

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Figure 3 Gross Pollutant Trap locations

1.1

Purpose of the CEMP

The purpose of the CEMP is to confirm the Project construction details and staging of works and to set out how construction activities will be carried out and managed as far as is reasonably practical to avoid, remedy or mitigate adverse effects on the environment.

This CEMP demonstrates that the works remain within the limits of the CRL designation and associated resource consents (for which, and application has been submitted along with this CEMP).

The CEMP will ensure that appropriate environmental management practices are followed during the Project’s construction phase. The CEMP will be implemented throughout the entire construction period ( approximately 13 months) for the Project, and updated as necessary.

Overall, implementation of this CEMP will ensure:



Appropriate management of adverse environmental effects associated with construction of the Project;



Compliance with the relevant designation conditions of the CRL designation and any resource consents;

 

Compliance with environmental legislation; and Achievement of the Project’s environmental and sustainability objectives.

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The CEMP and Sub-Plans will be reviewed at least annually or as a result of a material change to the 1 Project, or to address unforeseen adverse effects arising from construction or unresolved complaints .

The CEMP and Sub-Plans are required to be prepared in consultation with the Community Liaison Group (CLG) for the Project. Additionally, the CEMP and Delivery Work Plans (DWP) have undergone independent peer review prior to submission to AC. Comments received from the CLG and independent peer review process have been (where applicable and appropriate) incorporated in the CEMP and Sub-Plans, with an explanation being provided where any comments have not been incorporated. A record of consultation outcomes (CLG and independent peer review) for this CEMP is provided in Appendix J; a record of specific consultation outcomes is included in each relevant sub plan.

P0F

P

The CEMP has been updated (revision 9) by MBJV following Contract 6 award to reflect the revised construction design and methodology. The updates are considered non-material for the purposes of the CRL Designation conditions. As a result, the updates do not require further CLG, Mana Whenua or independent peer review input The updated CEMP (revision 9) supersedes the existing CEMP, revision 8, for the C6 works and will support the section 127 resource consent application process and outline plan waiver request.

1.2

CEMP Structure and Context

The CEMP is an overarching document and provides the framework for managing adverse environmental effects during construction of the Project. The principles and general approach to managing the environmental effects are set out in the CEMP. The CEMP includes details of personnel responsible for the implementation of environmental management and mitigation measures. The CEMP identifies the proposed construction methodology for each component of the works and presents a framework of principles, environmental policy, objectives and performance standards as well as processes for implementing appropriate environmental management.

1.2.1

CEMP Requirements

The CRL designation requires that a CEMP be submitted to AC with the Outline Plan, along with the Communication and Consultation Plan (CCP), Delivery Works Plans (DWP) and Site Specific 2 Construction Noise and Vibration Management Plans (if required) .

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Where specific requirements and objectives are not addressed by the Sub-Plans, the CEMP includes measures to give effect to these.

1.2.2

Works outside the Designation

The extent of works outside the designation are limited to:



The Water Street shaft, Water Street Construction Support Area (CSA) and approximately 55m of underground pipe (refer Figure 4); and



A small section of the Mt Eden Access Shaft and CSA sits outside the designation and within the adjacent KiwiRail designation (refer Figure 4).



Two GPT’s to be installed on Boundary Road (within the road reserve) (Figure 5)

The original proposed works have been consented. A section 127 variation to these resource consents is sought for the revised MBJV construction design and methodology (see section 2 for further detail).

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Designation condition 22

2

Designation condition 10

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In addition to managing environment effects within the designation, this CEMP also describes how effects will be managed in areas of the Project that fall outside the designation. A comprehensive approach to the management of actual or potential construction effects, irrespective of the location of the Designation boundary, is appropriate as it enables consistent environmental performance across the Project.

Figure 4

Project footprint showing works outside the designation at Water Street (in orange)

Figure 5 GPT locations outside the Designation on Boston Road.

1.3

Environmental Sub-Plans

The management of specific environmental effects during construction is addressed through the development and implementation of a suite of Delivery Works Plans (DWP), Management Plans (MP) and Site Specific Management Plans (SSMP) required by the CRL designation.

The DWP’s, MP’s and SSMP’s are collectively referred to as ‘Sub-Plans’ throughout this CEMP. The Sub-Plans relevant to these works are identified in Figure 6 and Table 1 and form appendices to the CEMP.

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These Sub-Plans cover all works associated with the Project including those which fall outside the designation.

A number of Sub-Plans have been updated following Contract 6 award to reflect the MBJV construction design and methodology.

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Project C6 Revision 8.3.18

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Figure 6 Document structure for Outline Plan, Resource Consents and Sub-Plans

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Table 1

Sub-Plans attached to the CEMP

Sub-Plan

Acronym

CRL Des. Condition #

Purpose

Section of CEMP

Erosion and Sediment Control Plan

ESCP

21.1(b) and (c)

Outline the methods for managing and controlling silt and sediment within the construction area.

Section ‎4.3.2 & Appendix C

Transport Access and Parking DWP

TAPDWP

25, 30

To manage the adverse effects of construction on the transport network (including parking and access)

Section ‎4.3.3 & Appendix D

Construction Noise and Vibration DWP

CNVDWP

36

To provide for the development and implementation of identified best practicable options to avoid, remedy or mitigate adverse effects on receivers of noise and vibration resulting from construction effects.

Section ‎4.3.5 & Appendix E

Historic Character DWP (Archaeology Section)

HCDWP

42

To manage the adverse archaeological effects that may result during construction.

Section ‎4.3.7 & Appendix F

Trees and Vegetation DWP

TVDWP

55

To manage the adverse effects from the removal of trees and vegetation during construction

Section ‎4.3.8 & Appendix G

Contamination DWP (also a Contaminated Soils Management Plan)

CDWP

57

To manage the adverse effects relating to contaminated land during construction

Section ‎4.3.10 & Appendix H

Air Quality DWP (also a Air Quality Management Plan)

AQDWP

59

To avoid, remedy or mitigate the adverse effects on air quality during construction

Section ‎4.3.11 & Appendix I

Communication and Consultation Plan

CCP

15

To set out set out the framework to ensure appropriate communication and consultation is undertaken with the community, stakeholders, affected parties and affected in proximity parties during constriction

Section 4.5 & Appendix J

1.4

Development of the CEMP and Sub-Plans

This CEMP and the Sub-Plans have been developed by experts and subjected to range of reviews to ensure that they are commensurate to the scale of the effects associated with the Project. This ensures that the measures proposed in the CEMP and its Sub-Plans are appropriate for managing the adverse environment effects of these construction works.

The CEMP, CCP and all the DWP’s have been presented to the Mt Eden CLG for feedback in accordance with designation condition 7.5. Where appropriate, this feedback has been incorporated into the CEMP, CCP and DWP’s. Where feedback has not been incorporated, reasons why have been provided in each document.

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The CEMP and DWP’s and the feedback from the CLG on these plans has been reviewed by CRL’s Independent Peers Review Panel (IPRP). The IPRP have provided a number of recommendations to ensure the CEMP and DWP’s meet the objectives and other requirements of the designation conditions (as required by Condition 11). These inputs, along with the feedback from the CLG, are attached in Appendix K. A mana whenua workshop for this project was held in November 2016. During this workshop the mana whenua forum provided feedback and input to the CEMP, DWP’s and GSMCP. This feedback and input is summarised in Appendix K. The CEMP has been updated (revision 9) by MBJV following Contract 6 award to reflect the revised construction design and methodology. The updates are considered non-material for the purposes of the CRL Designation conditions. As a result, the updates do not require further CLG, Mana Whenua or independent peer review input.

The updated CEMP (revision 9) supersedes the existing CEMP, revision 9, for the C6 works and will support the section 127 resource consent application process and outline plan waiver request.

1.5

Mana Whenua

We are all descended from Ranginui, our Father Sky and Papatuanuku, our Mother Earth. Ngā mana whenua o Tāmaki Makaurau have a special relationship with Ranginui, Papatuanuku, and their resources. Acting as kaitiaki, they endeavour to protect their whānau, hapū and Iwi and encourage all people to act as protectors of the earth.

Kaitiakitanga includes:

   

protecting, restoring, enhancing the mauri (life supporting capacity) of resources; fulfilling spiritual, emotional and inherited responsibilities to the environment; maintaining mana over resources; and ensuring the welfare of the people those resources support.

In Tamaki Makaurau it is mana whenua who are Kaitiaki.

The aspiration of the CRL project to be exemplary in the practice of sustainability – encompassing the four well-beings (environmental, cultural, social and economic) – aligns and supports kaitiakitanga. In meeting their sustainability commitments CRL staff, contractors and others involved in the project are also supporting kaitiakitanga and mana whenua as kaitiaki. Furthermore, they are also improving the state of the environment that we pass on for future generations.

The CRL sustainability framework is informed by tikanga tiaki and mātauranga. A CRL mana whenua forum has been established for the purposes of undertaking kaitiakitanga responsibilities associated with the project. The forum comprises those mana whenua groups who expressed an interest in being involved in the CRL project and its related activities. Eight mana whenua self-identified their interest in CRL and are currently part of the forum:

   

Ngāti Maru Ngāti Paoa Ngāi Tai Ki Tāmaki Ngāti Te Ata Waiohua

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Ngāti Whātua o Ōrākei Te Akitai Waiohua Te Kawerau a Maki Ngāti Tamaoho

CRLL continues to work collaboratively with the mana whenua forum on all aspects of the CRL project. With the commencement of construction for the CRL enabling works, the forum’s role will include cultural induction for contractors, assistance with discovery procedures, monitoring, and ongoing provision of mātauranga Māori input.

1.6

Designation Conditions

These Project works relate to the designation confirmed under Notice of Requirement (NoR) 6. This CEMP and its Sub-Plans are consistent with and complement the Assessment of Environmental Effects (AEE) for the Project. All works will be carried out in accordance with the CEMP and the SubPlans required by the designation.

The designation conditions are included in Appendix A. Designation conditions 19 – 24 outline what is required for the CEMP. Table 2 below identifies the relevant sections of the CEMP that address each condition.

Amended CEMP

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Quality Management Plan Document Version 9 Table 2

Designation conditions from the CRL designation relating to the CEMP

Condition Number

Condition

Relevant Section of CEMP

Designation Conditions (NOR 6) 13.1

The Requiring Authority, its contractor team, and the Auckland Council Consent Monitoring officer(s) shall establish and implement a collaborative working process for dealing with day to day construction processes, including monitoring compliance with the designation conditions and with the CEMP and DWPs (including SSCNVMPs, SSCNMPs and SSCVMPs) and any material changes to these plans associated with construction of the City Rail Link.

13.2

This collaborative working process shall:

13.3

‎5.1

(a) Operate for the duration of the construction works and for 6 months following completion of construction works where monitoring of designation conditions is still required, unless a different timeframe is mutually agreed between the Requiring Authority and the Auckland Council;

5.1

(b) Have a “key contact” person representing the Requiring Authority and a “key contact” person representing the contractor team to work with the Auckland Council Consent Monitoring officer(s);

5.1

(c) The “key contacts” shall be identified in the CEMP and shall meet at least monthly unless a different timeframe is agreed with the Auckland Council Consent Monitoring officer(s). The purpose of the meeting is to report on compliance with the designation conditions and with the CEMP, DWPs and material changes to these plans and on any matters of non-compliance and how they have been addressed;

5.1

(d) Once construction has commenced, the Requiring Authority and / or the contractor shall provide an update to the Community Liaison Groups (Condition 7 of this designation) at least once every 3 months, or if in accordance with Condition 7 these groups meet more regularly, at least once every two months.

5.1

The purpose and function of the collaborative working process is to: (a) Assist as necessary the Auckland Council Consent Monitoring officer(s) to confirm that:

5.1

(i) The works authorised under these designations are being carried out in compliance with the designation conditions, the CEMP, DWPs (including SSCNVMPs, SSCNMPs and SSCVMPs) and any material changes to these plans;

5.1

(ii) The Requiring Authority and its contractor are undertaking all monitoring and the recording of monitoring results in compliance with the requirements of the CEMP and DWPs (including SSCNVMPs, SSCNMPs and SSCVMPs) and any material changes to these plans;

5.1

(b) Subsequent to a confirmed Outline Plan, provide a mechanism through which any changes to the design, CEMP or DWPs, which are not material changes requiring approval under Condition 10 triggering the requirement for a new Outline Plan, can be required, reviewed andconfirmed;

5.1

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17.1

(c) Advise where changes to construction works following a confirmed Outline Plan require a new CEMP or DWP (including SSCNVMPs, SSCNMPs and SSCVMPs);

5.1

(d) Review and identify any concerns or complaints received from, or related to, the construction works monthly (unless a different timeframe is mutually agreed with the Auckland Council Consent Monitoring officer) and adequacy of the measures adopted to respond to these.

5.1

Upon receiving a concern or complaint during construction, the Requiring Authority shall instigate a process to address concerns or complaints received about adverse effects. This shall: (a) Identify of the nature of the concern or complaint, and the location, date and time of the alleged event(s);

‎4.5 and Appendix J

(b) Acknowledge receipt of the concern or complaint within 24 hours of receipt;

‎4.5 and Appendix J

(c) Respond to the concern or complaint in accordance with the relevant management plan , which may include monitoring of the activity by a suitably qualified expert, implementation of mitigation measures, and, in the case of noise and / or vibration, preparation of a site specific noise and / or vibration management plan (in accordance with Conditions 17.2

‎4.5 and Appendix J

A record of all concerns and / or complaints received shall be kept by the Requiring Authority. This record shall include: (a) The name and address of the person(s) who raised the concern or complaint (unless they elect not to provide this) and details of the concern or complaint; (b) Where practicable, weather conditions at the time of the concern or complaint, including wind direction and cloud cover if the complaint relates to noise or air quality;

‎4.5 and Appendix J ‎4.5 and Appendix J ‎4.5 and Appendix J ‎4.5 and Appendix J ‎4.5 and Appendix J

(c) Known City Rail Link construction activities at the time and in the vicinity of the concern or complaint; (d) Any other activities in the area unrelated to the City Rail Link construction that may have contributed to the concern or complaint such as non-City Rail Link construction, fires, traffic accidents or unusually dusty conditions generally;

‎4.5 and Appendix J ‎4.5 and Appendix J

(e) Remedial actions undertaken (if any) and the outcome of these, including monitoring of the activity.

17.3

This record shall be maintained on site, be available for inspection upon request, and shall be provided every two months (or as otherwise agreed) to the Auckland Council Consent Monitoring officer, and to the “key contacts” (see Condition 13).

17.4

Where a complaint remains unresolved or a dispute arises, the Auckland Council Compliance Monitoring Officer will be provided with all records of the complaint and how it has been dealt with and addressed and whether the Requiring Authority considers that any other steps to resolve the complaint are required. Upon receiving records of the complaint the Auckland Council Compliance Monitoring Officer must determine whether a review of the CEMP and/or DWPs is required under Condition 22 to address this complaint. The Auckland Council Compliance Monitoring Officer shall advise the Requiring Authority of its recommendation within 10 working days of receiving the records of complaint.

19.1

The objective of the CEMP and DWPs is to so far as is reasonablypracticable, avoid, remedy or mitigate any adverse effects (including cumulative effects) associated with the City Rail Link construction.

‎4.5 and Appendix J ‎4.5 and Appendix J

‎1.1

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19.2

All works must be carried out in accordance with the CEMP, the DWPs required by these conditions and in accordance with any changes to plans made under Condition 23.

19.3

The CEMP and DWPs shall be prepared, complied with and monitoredby the Requiring Authority throughout the duration of construction of the City Rail Link.

19.4

The DWPs shall give effect to the specific requirements and objectives set out in these designation conditions.

19.5

The CEMP shall include measures to give effect to any specificrequirements and objectives set out in these designation conditions that are not addressed by the DWPs.

20.1

In order to give effect to the objective in Condition 19.1, the CEMP must provide for the following:

‎1.1 ‎4.3

(b) Notice boards that clearly identify the Requiring Authority and the Project name, together with the name, telephone number and emailaddress of the Site or Project Manager and the Communication andConsultation Manager; (c) Training requirements for employees, sub-contractors and visitors on construction procedures, environment management and monitoring;

20.2

‎1.2

‎1.2

Appendix J

‎4.2

(d) A Travel Management Plan for each construction site outlining onsite car parking management and methods for encouraging travel to the site using forms of transport other than private vehicle to assist in mitigating localised traffic effects; and

Appendix D

(e) Where a complaint is received, the complaint must be recorded and responded to as provided for in Conditions 13, 15 and 17.

Appendix J

The CEMP shall include details of: (a) The site or Project Manager and the Communication and Consultation Manager (who will implement and monitor the Communication and Consultation Plan), including their contact details (phone, email and physical address); (b) The Document management system for administering the CEMP,including review and Requiring Authority / Constructor / Auckland Council requirements;

‎4.1 ‎5.6

(c) Environmental incident and emergency management procedures;

‎4.4

(d) Environmental complaint's management procedures (see also Condition 17);

Appendix J

(e) An outline of the construction programme of the work, includingconstruction hours of operation, indicating linkages to the DWPs which address the management of adverse effects during construction;

‎2.4

(f) Specific details on demolition to be undertaken during the construction period;

‎2.3.2

(g) Means of ensuring the safety of the general public; and

‎2.6.1

(h) Methods to assess and monitor potential cumulative adverse effects.

‎3.3

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21.1

‎ .6 In order to give effect to the objective in Condition 19.1, the CEMP shall include the following details and requirements in relation 2 to all areas within the surface designation footprint where construction works are to occur, and / or where materials and construction machinery are to beused or stored: (a) Where access points are to be located and procedures for managing construction vehicle ingress and egress to construction support and storage areas;

Appendix D

(b) Methods for managing the control of silt and sediment within the construction area;

Appendix C

(c) Methods for earthworks management (including depth and extent of earthworks and temporary, permanent stabilisation measures and monitoring of ground movement) for earthworks adjacent to buildings and structures;

Appendix C

(d) Measures to adopt to keep the construction area in a tidy conditionin terms of disposal / storage of rubbish and storage unloading of construction materials (including equipment). All storage of materials and equipment associated with the construction works shall take place within the boundaries of the designation; (e) Measures to ensure all temporary boundary / security fences associated with the construction of the City Rail Link are maintained in good order with any graffiti removed as soon as possible; (g) The location and specification of any temporary acoustic fences and visual barriers, and where practicable, opportunities for mana whenua (see Condition 8) and community art or other decorative measures along with viewing screens to be incorporated into these withoutcompromising the purpose for which these are erected; (h) How the construction areas are to be fenced and kept secure from the public and, where practicable and without compromising theirpurpose how opportunities for public viewing, including provision of viewing screens and display of information about the project and opportunities for mana whenua and community art or other decorative measures can be incorporated to enhance public amenity and connection to the project; (i) The location of any temporary buildings (including workers officesand portaloos) and vehicle parking (which should be located within the construction area and not on adjacent streets); (j) Methods to control the intensity, location and direction of artificial construction lighting to avoid light spill and glare onto sites adjacent construction areas; (k) Methods to ensure the prevention and mitigation of adverse effects associated with the storage, use, disposal, or transportation of hazardous substances; (l) That onsite stockpiling of spoil or fill at Downtown and Lower Albert Street construction yards be minimised where practicable; (m) That site offices and less noisy construction activities be located at the edge of the construction yards where practicable; and (n) Methods for management of vacant areas once construction is completed in accordance with the Urban Design DWP.

‎2.6 ‎2.6.2 ‎2.6.1 and Appendix J ‎2.6.1

‎2.6 ‎4.3.6 ‎4.3.12 N/A

‎2.6 ‎2.6.3

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21.2

Subject to any alternative arrangement with the landowner of theDowntown Shopping Centre, the Downtown construction yard, including QEII Square, Downtown Shopping Centre and Lower Albert Street, shall be progressively released from occupation for construction purposes where the area or any part of the area is no longer required for construction.

22.1

The CEMP and DWPs shall be reviewed at least annually or as a result of a material change to the City Rail Link project or to addressunforeseen adverse effects arising from construction or unresolved complaints. Such a review may be initiated by either Auckland Council or the Requiring Authority. The review shall take into consideration: (a) Compliance with designation conditions, the CEMP, DWPs (including SSCNVMPs, SSCNMPs and SSCVMPs) and material changes to these plans;

N/A

‎5.7 ‎5.7

(b) Any changes to construction methods;

‎5.7

(c) Key changes to roles and responsibilities within the City Rail Link project;

‎5.7

(d) Changes in industry best practice standards;

‎5.7

(e) Changes in legal or other requirements;

‎5.7

(f) Results of monitoring and reporting procedures associated with the management of adverse effects during construction;

‎5.7

(g) Any comments or recommendations received from Auckland Council regarding the CEMP and DWPs (including SSCNVMPs, SSCNMPs and SSCVMPs); and (h) Any unresolved complaints and any response to the complaints and remedial action taken to address the complaint as required under Condition 17.

‎5.7 ‎5.7 ‎5.7

22.2

A summary of the review process shall be kept by the Requiring Authority, provided annually to the Auckland Council, and madeavailable to the Auckland Council upon request.

23.1

Following the CEMP and DWPs review process described in Condition 22, the CEMP may require updating.

‎5.7

23.2

Any material change to the CEMP and DWP must be consistent with the purpose and objective of the relevant condition.

‎5.7

23.3

Affected parties will be notified of the review and any material change proposed to the CEMP and DWPs (including SSCNVMPs, SSCNMPsand SSCVMPs).

23.4

The CEMP and DWPs must clearly document the comments and inputs received by the Requiring Authority from affected parties about the material change, along with a clear explanation of where anycomments have not been incorporated, and the reasons why not.

23.5

Any material change proposed to the CEMP and DWPs shall be subject to an independent peer review as required by Condition 11.

‎5.7 ‎5.7 ‎5.7

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23.6

Following that review any material change proposed to the CEMP and DWPs relating to an adverse effect shall be submitted for approval to Auckland Council Compliance and Monitoring Officer, at least 10 working days prior to the proposed changes taking effect. If anychanges are not agreed, the relevant provisions of the RMA relating to approval of outline plans shall apply.

24.1

To manage the adverse effects on Network Utilities Operations during the construction of the City Rail Link, the following shall be included in the CEMP.

24.2

The purpose of this section of the CEMP shall be to ensure that the enabling works and construction of the City Rail Link adequately take account of, and include measures to address the safety, integrity, protection or, where necessary, relocation of existing network utilities that traverse, or are in close proximity to, the designation during the construction of the City Rail Link.

24.3

For the avoidance of doubt and for the purposes of this condition an “existing Network Utility” includes infrastructure operated by a Network Utility Operator which was:

‎5.7

‎4.3.1

(a) In place at the time the notice of requirement for the City Rail Link was served on Auckland Council (23 August 2012); or (b) Undertaken in accordance with condition 6 of this designation or the section 176(1)(b) RMA process.

24.4

The CEMP shall be prepared in consultation with Network Utility Operators who have existing Network Utilities that traverse, or are in close proximity to, the designation and shall be adhered to and implemented during the construction of the City Rail Link. The CEMP shall include as a minimum: (a) Cross references to the Communication and Consultation Plan for the methods that will be used to liaise with all Network Utility Operators who have existing network utilities that traverse, or are in close proximity to, the designation; (b) Measures to be used to accurately identify the location of existingNetwork Utilities, and the measures for the protection, support, relocation and/or reinstatement of existing Network Utilities; (c) Methods to be used to ensure that all construction personnel, including contractors, are aware of the presence and location of the various existing Network Utilities (and their priority designations) which traverse, or are in close proximity to, the designation, and therestrictions in place in relation to those existing Network Utilities. This shall include:

‎4.3.1 and Appendix J ‎4.3.1 ‎4.3.1

(i) Measures to provide for the safe operation of plant and equipment, and the safety of workers, in proximity to existing Network Utilities; (ii) Plans identifying the locations of the existing Network Utilities (and their designations) and appropriate physical indicators on the ground showing specific surveyed locations; (d) Measures to be used to ensure the continued operation of Network Utility Operations and the security of supply of the utilities by Network Utility Operators at all times; (e) Measures to be used to enable Network Utility Operators to access existing Network Utilities for maintenance at all reasonable times on an ongoing basis during construction, and to access existing Network Utilities for emergency and urgent repair works at all times during theconstruction of the City Rail Link

‎4.3.1 ‎4.3.1

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(f) Contingency management plans for reasonably foreseeable circumstances in respect of the relocation and rebuild of existing Network Utilities during the construction of the City Rail Link; (g) A risk analysis for the relocation and rebuild of existing Network Utilities during the construction of the City Rail Link; (h) Earthworks management (including depth and extent of earthworks and temporary and permanent stabilisation measures), for earthworks in close proximity to existing Network Utilities;

‎4.3.1 ‎4.3.1 and Appendix C

(i) Vibration management and monitoring for works in close proximity to existing Network Utilities;

‎4.3.1 and Appendix E

(j) Emergency management procedures in the event of any emergencyinvolving existing Network Utilities;

‎4.3.1

(k) The process for providing as-built drawings showing the relationship of the relocated Network Utilities to the City Rail Link to Network Utility Operators and the timing for providing these drawings; (l) Measures to ensure that network utilities are not interrupted to the Mt Eden Corrections Facility as a result of City Rail Link works. The requiring authority shall advise the Department of Corrections and the entity contracted by Department of Corrections to administer and runthe Mt Eden Corrections facility at 1 Lauder Road, of any works on network utilities in the vicinity of the Mt Eden Corrections Facility which may impact on utility service provision to the Mt Eden Corrections Facility at least 14 days prior to those works occurring to allow the Department of Corrections (and the entity contracted to administer and run the facility at 1 Lauder Road) to arrange suitable contingencies. Communication and consultation with the Department of Corrections, and the entity contracted to administer and run the facility at 1 Lauder Road, shall be recorded in accordance with condition 15) of this designation. The Requiring Authority shall be responsible for ensuring that construction works do not interrupt network utilities to the Mt Eden Corrections Facility, unless by prior arrangement with Department of Corrections and the entity contracted by Department of Corrections to administer and run the Mt Eden Corrections facility at 1 Lauder Road. (m) A summary of the consultation (including any methods or measures in dispute and the Requiring Authorities response to them) undertaken between the Requiring Authority and any Network UtilityOperators during the preparation of the CEMP. 24.5

‎4.3.1

If the Requiring Authority and a Network Utility Operator cannot agree on the methods proposed under the CEMP to manage the construction effects on the Operator’s network utility operation, unless otherwise agreed, each party will appoint a suitably qualified and independent expert, who shall jointly appoint a third such expert to advise the parties and make a recommendation.

That recommendation will beprovided by the Requiring Authority as part of the CEMP along with reasons if the recommendation is not accepted.

‎4.3.1

N/A

‎4.3.1 and Appendix J Not applicable

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2 2.1

Project Description

Document Version 9

CRL Overview

The 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 proposed works include the construction of twin underground rail tunnels and two underground stations using cut and cover methods, and tunnel boring methods, up to 42 m below ground.

The CRL enabling works form a separate package to the main CRL project. The size of this project means that the various packages of enabling works have been separated into a number of construction contracts. The Nikau Street Stormwater Main Realignment package is referred to as Contract 6 (C6).

2.2

Nikau Street Stormwater Main Realignment

The purpose of the Project is to enable the construction of the future CRL tunnels by realigning the Nikau Street Stormwater Main which currently represents a critical CRL project constraint. The Project works involve the construction of a replacement stormwater main from the eastern end of Water Street, where it then passes beneath the CRL East Facing Connection (EFC) east of Mount Eden Road, it then continues west to connect into the existing main at the corner of Nikau Street and Ruru Street. The Project includes the construction of a central shaft at Mt Eden Road and shafts at Water Street (Drive) and Nikau Street (Retrieval).

The realigned pipeline will be 2,000mm (internal diameter) and is proposed to be constructed along a horizontally curved (R150m and 802m) alignment which is required to reach the proposed shaft locations. The realigned pipeline and shaft locations have been positioned to avoid the proposed rail alignment, basalt extents and existing properties.

One tunnel drive is proposed from the Water Street shaft. Due to the depth of the upstream and downstream connection points as well as the requirement to pass beneath the proposed CRL alignment (approximately 15-20m), pipe jacking is the proposed construction methodology. Pipejacking is a trenchless construction technique where a Tunnel Boring Machine (TBM) with a pressurised slurry system excavates material. Pipes are then horizontally driven using a hydraulic ram from a series of vertical shafts. Therefore, it is proposed to install the following shafts, along with associated CSA’s, at the following locations:



An access shaft adjacent to Mount Eden Road (approximately 2.7m in diameter), known as the “Mount Eden Road Shaft” is located between Mount Eden Road and the North Auckland Line 2 (NAL). The construction activities shall be supported by a CSA of approximately 3928m (plus an 2 additional 350m for a temporary vehicle access ramp) surrounding the shaft (Appendix B).

P

P



P

P

A launch shaft at Water Street (approximately 9.25m diameter and 16.7m deep), known as the “Water Street Shaft” is located within an CRLL owned vacant site which is currently used as a carpark. The shaft is to be positioned between the end of Water Street and the existing NAL lines.

2 It is proposed to be supported by a CSA of approximately 1500m surrounding the shaft (Appendix B).

P

Amended CEMP

P

Project C

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

A reception shaft at Nikau Street (varies from approximately 6.1m to 10.9m in diameter and 15.4m deep) known as the “Nikau Street Shaft” is located within the footpath at the corner of Nikau Street 2 and Ruru Street. It is proposed to be serviced by a CSA of approximately 900m at 16-18 Ruru Street (Appendix B).

P



P

2

An additional construction support area of 2728m will be located at 28 Mt Eden Road. The demolition of the existing building at 28 Mt Eden Road and the establishment of the additional construction support area was authorised via a further outline plan (Council reference: OPW60306133) on 13 September 2017.

P

P

The shaft locations have been strategically selected to avoid clusters of utilities. However, it is expected that some utilities will not be able to be avoided and therefore will need to be protected or relocated before piling and shaft excavation. AT is currently engaging with relevant utility stakeholders as part of this work and it is anticipated that existing services will either be relocated or protected as part of the access shaft formation.

Other ancillary works are required to enable the construction of the Project and include:



Relocation and protection of various minor utilities which clash with, or are in close proximity to, the shafts.

 

Temporary protection of the Huia No. 2 watermain adjacent to the Nikau Street shaft.

  

A open cut connection to the existing pipe at Water Street.



The demolition of 28 Mount Eden Road to enable the use of the site as a construction support area.

The floor slab and external impervious surfaces will remain in place. No excavation is proposed on this site.



Three new connections are required to connect the realigned Nikau Street Stormwater Main to the existing stormwater mains within Ruru Street at the corner of Nikau Street and Ruru Street.



In addition, three permanent access shafts are proposed within the reception and launch shafts during reinstatement at Water Street, Mount Eden Road and Nikau Street to accommodate access associated with the ongoing operation and maintenance of the realigned Nikau Street Stormwater Main.



Three new Gross Pollutant Traps (GPT’s) on Boston Road (two) and Normanby Road (one). These works will require excavating pits of approximately 6 m wide, 6 m long and 7.9 m deep to install new 2.5 m wide GPTs and manholes (Figure 3).

A section of mined tunnel of approximately 7m will extend under Nikau Street to connect the realigned section of pipe from the Nikau Street shaft into the existing stormwater main at Ruru Street.

The demolition of 26 Mount Eden Road to enable the construction of the Mount Eden shaft.

The demolition of 16-18 Ruru Street to enable the property to be used as a worksite and reduce disruption to the adjacent roads and properties. The Nikau Street shaft cannot be fully located within this property as a permanent manhole and riser is required by AC for maintenance access at this location.

The Project works are anticipated to take up to 13 months depending on the methodology chosen by the Construction Contractor. Subject to obtaining the section 127 variation to resource consent, works are expected to commence in March 2018.

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Whether the existing abandoned alignment is backfilled or used for stormwater storage is still to be agreed with Council.

2.3

Construction Methodology

2.3.1

Works Summary

Generally, the Project works will consist of the following key activities. These have been described in detail in the following sections.

4. Building demolition 5. Locate/protect/relocate minor conflicting services at Mt Eden Road 6. Excavate and construct new Mount Eden Road access shaft 7. Locate and protect existing Water Street shaft (which serves the existing stormwater pipe – this shaft will not be used during construction) 8. Locate/protect/relocate other minor conflicting services at Water Street 9. Excavate and construct new Water Street launch shaft 10. Launch pipe jack from Water Street driving towards the Nikau Street Shaft 11. Put in place temporary traffic control measures at Nikau Street/Ruru Street 12. Locate/protect/relocate other minor conflicting services at Nikau Street 13. Excavate and construct new Nikau Street reception shaft 14. Retrieve the pipe jacking machine at the Nikau Street reception shaft 15. Complete mined connection works to existing 2,000mm dia. stormwater main at Water Street shaft and Nikau Street shaft 16. Install GPT’s 17. Divert flow to new stormwater main 18. Seal connections to existing stormwater main

2.3.2

Building demolition

In order to construct the Project, the buildings at 26 Mt Eden Road, 28 Mt Eden Road and 16-18 Ruru Street need to be demolished. This work will be completed by a sub-contractor. The demolition methodology for the two buildings will generally be conducted as follows: 1. Construct a 2.5m high mesh panel fence (with dust net or similar) around the perimeter to secure the site.

2. Establish traffic management, site entry and divert pedestrians (as outlined in the TAPDWP in Appendix D).

3. Disconnect services to the perimeter of the site.

4. Conduct an asbestos check. If asbestos is identified it will be removed by an appropriately experienced, qualified and certified contractor.

5. Remove of cabling, pipework, HVAC units, aluminium joinery and other items for reuse and recycling.

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6. Structural demolition will be carried out using concrete saws, an excavator and/or a hydraulic excavator mounted pincers and breakers. The roof will be removed and the steel removed from site for recycling.

7. Blockwork walls will be demolished using a hydraulic breaker to separate the steel from the blockwork.

8. Where required to make way for the shaft, concrete floor slabs will be broken out and removed.

9. Final sweep off of the existing concrete ground floor slab to facilitate site establishment.

2.3.3

Utilities Relocation

In addition to relocating the Nikau Street stormwater main, other network utilities also need to be relocated to make room for the construction of the pipe jack shafts.

Relocation of utilities will occur prior to commencement of shaft construction. Whilst shaft locations have been strategically located to avoid clusters of utilities, some are unable to be avoided. Prior to piling and shaft excavation protection or relocation of utilities will occur. Network Utility Operators (NUO) that will be affected by the works include Vector Electricity, Vector Gas, Vector Communications, Chorus, Vodafone, AC and Watercare Services. The following sections outline the utilities relocations that are expected to occur in relation to each shaft. The Communication and Consultation Plan in Appendix J provides further detail around the consultation and communication that has been and will continue to be undertaken with network utility providers affected by the Project.

All existing network utilities in the vicinity of the three shafts have been located using Before You Dig Records, AC GIS information and as built plans provided by the network utility providers (where available). All network utilities in close proximity to the works will be physically located and marked out on site by a suitably experienced services locator prior to works commencing. Network utilities that clash with (or are in close proximity to) the shafts will be relocated or protected in advance of the main construction works.

The location, protection and/or relocation of utilities that clash with the shaft locations enables to ensure that all personnel working on site are able to conduct the works safely. Relocating or protecting all utilities that clash with the Project will ensure the continuous operation of those network utilities, with the shortest possible outage only during the changeover to the newly installed diversion. Any site access for required by network utility providers will be coordinated as required with the Project Engineer.

All earthworks in close proximity to utilities will be conducted using methods which minimise the risk of damage to these utilities. Such methods include hand excavating and hydro-excavation. Vibration effects on utilities will be managed through the protection or relocation of at risk utilities.

As built drawings will be provided to the relevant NUOs for any relocated utilities.

The utilities requiring protection and/or relocation for the Project are identified below.

2.3.3.1

Mt Eden Road Access Shaft

The utilities identified at or around the Mt Eden Road Access shaft and their associated actions are summarised in Table 3 and Figure 9 below. Utilities shown in orange are likely to be protected, while utilities shown in blue are likely to require removal or diversion around the excavation works.

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The services supplying electricity, water and communications to 28 Mt Eden Road will need to be relocated to ensure the continuous operation of the site office occupying 28 Mt Eden Road. There may be a short period of time during the relocation of these utilities where temporary disconnection is required. The timing of this will be coordinated to ensure business continuity.

Table 3

Utilities - Mt Eden Road shaft

Asset

Details

Action

Stormwater

New stormwater connections at shaft

New

Ex. 375mm dia. sw to be removed

Remove/divert

Wastewater

Not identified at this stage

N/A

Potable Water

310mm and 470mm out of service (may contain Vodafone cables, refer below)

Remove/divert

175mm CLCI (in Mt Eden Rd)

Protect during shaft construction, replace with bridge works as part of Main CRL project at a later date.

Gas

75mm 0kPa duct

Protect/remove

Vector electricity

Not identified at this stage

N/A

Chorus

1/100mm P

Protect

Minor Communications

Potential Vodafone Network Cables housed in out of service water mains.

Details still to be confirmed by Vodafone.

Divert

2.3.3.2

Water Street Shaft

The utilities identified at or around the Water Street shaft and their associated actions are summarised in Table 4 and Figure 10 below. Utilities shown in orange are likely to be protected, while utilities shown in blue are likely to require removal or diversion around the excavation works. Proposed stormwater assets are shown in green.

Table 4

Utilities – Water Street shaft

Asset

Details

Action

Stormwater

New and diverted stormwater connections to shaft

New, diversion

Wastewater

Future wastewater diversion to coordinate location with shaft

Future, diversion (Not part of 3 the Project)

Existing 150mm dia. wastewater line

Protect

Potable Water

Appears to terminate at end of Water Street 10m+ clearance

Protect

Gas

Appears to terminate at end of Water Street 10m+ clearance

Protect

P2F

3

Diversion of this wastewater asset will be conducted during the main CRL construction phase and in not required for the Project.

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Asset

Details

Action

Vector electricity

Appears to terminate at end of Water Street 10m+ clearance

Protect

Chorus

Not identified at this stage

N/A

Minor communications

Not identified at this stage

N/A

2.3.3.2.1

Works adjacent to existing 1950 Stormwater Main

The construction of the Water Street shaft occurs immediately adjacent to the existing Nikau Street stormwater main which is being diverted by the Project. The shaft is located as close as possible to the existing stormwater main to enable a safe and effecting mining operation to connect to the existing main at completion. The piling operation is planned to be located with a minimum of 500mm clearance from the existing stormwater main to allow for construction tolerances associated with the piling. AC Stormwater has indicated that there is relatively low risk to the existing stormwater main as a result of construction, as the existing asset is being decommissioned at the completion of the project. Piling shall continue beyond the depth of the existing stormwater main to ensure loads are transferred to the ground below the pipe rather than the pipe itself. Figure 7 illustrates the indicative piling details.

Figure 7 Water Street shaft – indicative piling details

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2.3.3.3

Nikau Street Shaft

The utilities identified at or around the Nikau Street shaft and their associated actions are summarised in Table 5 and Figure 11 below. Utilities shown in orange are likely to be protected, while utilities shown in blue are likely to require removal or diversion around the excavation works. Proposed stormwater assets are shown in green. For further information refer to the detailed design report and drawings.

The utility relocation across Nikau Street will be separated into two parts which will be completed at different times to ensure that there is at least one lane open on Nikau Street at all times. All traffic effects from these works are (including any temporarily lane closures/reductions) are addressed within the TAPDWP (Appendix D). Any noise effects from these works will be addressed in the CNVDWP (Appendix E).

Table 5

Utilities – Nikau Street shaft

Asset

Details

Action

Stormwater

Possible stormwater connections at shaft

New/diversion

Wastewater

600mm dia combined system

Protect

150mm dia. wastewater

Protect

Huia No. 2

Protect

150mm dia. cast iron

Divert around shaft within Nikau Street

300mm dia. 0kPa steel duct (identified in Minor Utilities Assessment, not identified on BeforeYouDig)

Protect

MP4 32mm PE through 75mm CI duct

Divert around shaft within Nikau Street

Vector electricity

Not identified at this stage

N/A

Chorus

2/100mm P

Divert around shaft within Nikau Street

Minor communications

Not identified at this stage

N/A

Potable Water

Gas

2.3.3.3.1

Protection of Huia No. 2

The Huia No. 2 water main is a 1300mm diameter Concrete Lined Steel (CLS) trunk water main which is a critical piece of infrastructure in Watercare’s trunk supply network.

It is proposed to physically locate the existing Huia No. 2 Water main on site prior to commencing construction. Once located, the existing pipe will be carefully exposed over a length of 4-5 metres using hand digging and hydro excavations to prevent any damage. Once exposed it is proposed to construct a temporary gravity retaining wall (keystone block or equivalent) on the street side of the existing main, and reinstate the existing berm and carriageway to the back of the retaining wall.

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A temporary fence (or similar) will be erected on the shaft side of the water main, with a solid cover placed over the main supported by the two walls to protect it from disturbance during shaft excavations and from the lowering of equipment into the shaft. Temporary restraints may be attached from the existing main to the new gravity wall to restrict any unintended movement of the main during construction. These protection details are illustrated in Figure 8 below.

Figure 8 Huia No. 2 Water Main – Indicative protection details

Once the protection works outlined above have been completed the remainder of the shaft excavations will commence. Rock breaking will be undertaken to the basalt below and adjacent the existing water main. Rock breaking is likely to involve chemical fracturing and rock picking and will not involve blasting. A 1.15m allowance from the face of the excavations to the edge of the existing main has been conservatively allowed for any overbreak that might occur during excavations.

Early engagement with Watercare regarding the Huia No.2 Water Main and the protection details outlined above have indicated that the protection methodology outlined above is acceptable in principle. A Works Over Application will be submitted to Watercare along with the final design details for approval. Inspections of the water main pre, during and post construction (if required) will be agreed with Watercare as part of the Works Over Application.

Damage during construction must be prevented due to the critical nature of this asset. It is considered that the protection methodology outlined above along with ongoing consultation with Watercare is sufficient to manage the risk of damage to this asset during construction.

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Figure 9 Utilities – Mt Eden Road shaft Left - Existing situation with services to be protected and/or removed Right - Ultimate situation showing the existing services to remain and the new services

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Figure 10 Utilities – Water Street shaft Left - Existing situation with services to be protected and/or removed Right - Ultimate situation showing the existing services to remain and the new services

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Figure 11 Utilities - Nikau Street shaft Left - Existing situation with services to be protected and/or removed Right - Ultimate situation showing the existing services to remain and the new services

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2.3.4

Shaft construction

Each shaft has individual set up requirements and layouts. Shaft construction methodology for each of the three sites is outlined below.

2.3.4.1

Mt Eden Road Access Shaft

The Mt Eden site is a sloping site. An alternative site access for construction of the Mt Eden Road shaft and 28 Mt Eden Road will be established. The site needs to be excavated to make it sufficiently level for the construction of the shaft to commence. This requires lowering the ground level to the top of the access shaft level. The indicative site layout is illustrated in Figure 13.

The site establishment and shaft construction at the Mt Eden Road site will generally follow the below sequencing: 1. Establish environment controls (as outlined in Sub-Plans), traffic management and site fencing.

2. Construction of a vehicle access ramp from Mt Eden Road down to the rear of 28 Mt Eden Road. This may include the relocation of services to 28 Mt Eden Road along this temporary access ramp.

3. Excavation of the site down to a level platform at the height of the finished access chamber.

4. Installation of fencing between the railway and the site once the top of the shaft has been reached.

5. Installation of the casing for the access shaft.

6. Excavation of the shaft and installation of supports as the appropriate. Once the base level of the shaft is reached the base slab will be installed.

7. Construct the permanent works including a mined link to the new stormwater main.

8. Once complete the shaft will be backfilled.

9. Complete the access chamber internally 10. Complete the associated stormwater manhole and connection including cut in and dropper.

2.3.4.2

Nikau Street Shaft

Once the building at 16–18 Ruru Street is removed the CSA can be established on top of the building foundations. The site establishment and shaft construction at the Nikau Street site will generally follow the below sequencing: 1. Establish environment controls (as outlined in Sub-Plans), traffic management and site fencing.

2. Connecting to services (water and power) to facilitate construction. Establishing site offices, toilet and Smoko facilities for staff.

3. Locate and protect Huia no.2 water supply main (refer to Section ‎2.3.3.3.1 for further details).

4. Excavate down to basalt level and install fill retention gravity walls

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5. Pre-split and excavate basalt layer.

6. Install ground support rock bolts and shotcrete as required to stabilise basalt.

7. Install reinforced concrete ring beam to support jacks. Excavate down and push caisson down as excavation progresses to rock level.

8. Excavate remaining section of shaft below rock level installing ground support rock bolts and shotcrete as required.

9. Install base slab.

10. Carry out any strengthening to shaft wall for TBM reception 11. Receive the TBM driven from the Water St Shaft and remove from shaft 12. Install canopy tubes for mined tunnel connection.

13. Mine tunnel from base of shaft to existing pipe/shaft installing ground support ground support as mining progresses.

14. Construct permanent concrete chamber at base of shaft to connect the mined pipe to the driven pipe including a riser and dropper.

2.3.4.3

Water Street Shaft

The Water Street CSA is relatively flat and requires little re-contouring to make it suitable for the construction of the Water Street shaft. The Water Street site is to be used to store the construction materials, pipe and provide some contractor parking.

The site establishment and shaft construction at the Water Street site will generally follow the below sequencing: 1. Establish environment controls (as outlined in Sub-Plans), traffic management and site fencing.

2. Connecting to services (water and power) to facilitate construction. Establishing site offices, toilet and smoko facilities for staff.

3. Locate and protect existing stormwater main (refer to Section ‎2.3.3‎2.3.3.2.1 for further details).

4. Install ground improvement/soft piles around stormwater main and mined section.

5. Installation of the secant pile wall.

6. Excavate shaft to the existing stormwater main invert level, installing walers as required.

7. Install canopy tubes and necessary strengthening to the mined tunnel portal within the shaft.

8. Recommence excavation of the shaft and installation of supports as the appropriate levels are reached. Once the base level of the shaft is reached the base slab will be installed.

9. Install jacking frame in shaft and surface equipment in preparation for the tunnel boring phase.

10. Launch TBM and carry out drive to Nikau Street shaft (see Section ‎2.3.4.2).

11 Construct permanent concrete chamber, access stair and chute within the shaft and permanent lining for the connecting tunnel up to the mined connection level.

12 Break through secant pile wall and mine tunnel to expose existing stormwater main, installing ground support as mining progresses

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11. Complete permanent lining of the mined connection to the existing main and make final connection 12. Complete construction of the permanent concrete chamber, access stair and chute within shaft.

2.3.5

Tunnel Boring

Due to the depth of the existing stormwater main it is proposed to install the realigned main using pipe jacking, a trenchless installation method where pipes are driven horizontally between two vertical shafts using a tunnel boring machine (TBM) (Figure 12). Pipe jacking operations will be powered from a fixed electrical power supply from Vector or using diesel powered generators.

Figure 12 Indicative pipe jacking launch site setup with slurry TBM

Pipe jacking has a number of environmental benefits over open cut construction due to the reduced surface interaction required for this method.

The TBM has a rotating cutting head to excavate the ground and is pushed into the ground with a hydraulic jacking frame set up in the launch shaft ( Water St Shaft). As the TBM progresses forward sequential sections of pipe are lowered into the jacking frame and pushed forward behind the TBM. Intermediate jacking stations will be used on the drive to assist with overcoming friction forces on the pipe.

At the front face of the TBM cutter head is a chamber filled with slurry which combines with the excavated material and is pumped out of the tunnel. This slurry mix is primarily bentonite, water and a small amount of additives. These additives are dependent on the ground condition discovered at the site and are yet to be confirmed.

The slurry mix is pumped out through the tunnel to a separation plant located at the top of the launch shaft. The separation plant removes the excavated material from the slurry. The slurry is then pumped back into the tunnel and reused.

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The TBM excavates an area slightly larger than the stormwater pipe (creating approximately 25mm gap) to allow enough space for pipe installation. This gap will either be closed by the ground or filled with grout.

2.3.6

The Project involves a single drive which starts at the launch shaft (Water Street Shaft) and ends at the Nikau Street shaft. Mined Tunnels

A short section of mined tunnel is required at each of the Water Street, Mt Eden Rd and Nikau Street shafts to connect the new section of pipe into the existing pipe network. This involves excavating the mined tunnel from within the shaft and installing ground support as the excavation progresses. Ground support includes canopy tubes installed above the tunnel crown to reinforce the ground and prevent collapse and rock bolts/steel sets and lagging and/or shotcrete to support the tunnel excavation. A permanent tunnel lining is constructed from cast insitu reinforced concrete.

2.3.6.1

Water St to Mt Eden Rd

For this section the material encountered is likely to be predominately sandstone/mudstone rock (unweathered East Coast Bays Formation (ECBF)) with a short section of softer ground consisting of residual/weather ECBF, Tauranga Group (TG) alluvium and volcanic ash at Water Street shaft location.

Based on the ground investigations the ground conditions at Water Street Shaft are very soft and susceptible to high consolidation settlement during shaft construction. The shaft has therefore been designed as undrained using a secant pile wall to limit settlement and ground water drawdown.

For the mined connecter tunnel ground improvement in the form of deep soil mixing and/or jet grouting is proposed to replace the soft ground with a cement filled pile (soft pile). This stiffens the ground allowing for less settlement and more favourable conditions for mining the tunnel. This also helps to reduce the permeability of the ground around the opening with the shaft further reducing the groundwater drawdown.

2.3.6.2

Mt Eden to Nikau Street

From Mt Eden to the Nikau Street shaft. The material encountered is likely to be predominately sandstone/mudstone rock (unweathered and weathered ECBF) at either ends of the drive with a short section of softer ground in the middle of the drive consisting of residual ECBF and TG alluvium. A section of hard rock (basalt) is expected to be encountered in the middle section of the drive.

The mined connector tunnel will be constructed to join the pipe into the existing stormwater main at Nikau Street. This is to avoid placement of the shaft in the road corridor.

The new pipe will then be joined to the existing stormwater main by cast insitu concrete connection.

2.3.7

Gross Pollutant Trap Installation

Three GPT’s are required to be installed on Normanby Road (one) and Boston Road (two). These works will occur within the road corridor. All sites are relatively flat. Traffic management around these small work areas is outlined in the TAPDWP. The GPT installation will generally be carried out as follows: 1. Excavate around existing stormwater manholes, expose and protect utilities 2. Install shoring (sheet pile or similar)

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3. Remove existing man hole 4. Install GPT, new manhole and connect with existing stormwater network 5. Backfill excavation and reinstate pavement

2.3.8

Earthworks

The approximate earthworks volumes for the three shafts and two tunnels are summarised in Table 6 below. All material will be stockpiled on site for a short period of time before removal off-site. All volumes are estimated in-situ with no allowance for bulking.

For further details around erosion and sediment control refer to the ESCP in Appendix C.

2.3.9

Commissioning

Once the new stormwater pipe is complete, the new alignment can be livened. This occurs by breaking through into existing pipe to complete remaining permanent works. This final connection to the new alignment will be scheduled to occur during a period of low flows and when little rain is forecast. The retired pipe section can then be decommissioned. The three shafts can then be backfilled and the permanent CRL works constructed.

2.4

Project Programme

The Project is anticipated to take approximately 13 months to construct. To ensure construction works are undertaken as quickly and efficiently as possible, the construction sequence activities are performed in parallel, i.e. each shaft will be constructed simultaneously. The approximate timing of these main activities and how the different work fronts may progress within the construction period is shown in Table 7.

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Table 6

Earthworks volumes

Shafts Mt Eden Access Shaft

Depth (m)

Area (m²)

Excavation (m³)

Fill (m³)

18.7

117

110

20

2.5

1950

600

20

Water Street Launch Shaft

16.5

57

950

1081

Nikau Street Reception Shaft

15.4

93

680

580

-

2217

2340

1701

CSA

Total for shafts Ground Improvement Water Street

Depth (m) 16

2000mm dia. Concrete Pipeline From Water Street to Nikau Street Water Street Mined Area - Excavation Nikau Street Mined Area - Excavation Mt Eden Rd Mined Area - Excavation Total Excavation Pipework GPTs Total Excavation GPTs

Area (m²)

Excavation (m³)

70 Length (m)

Depth (m) 7 (each)

1090 Excavation (m³)

422.16

1880

422.16

70 85 50 2085

Area (m²)

Excavation (m³)

84

TOTAL

615 Excavation (m³)

Fill (m³) 1090 Fill (m³) 40 55 25 120 Fill (m³) 400 Fill (m³)

Sub-Total

-

-

6130

3311

Contingency for consent purposes (10%) Total Excavation of Shafts and Pipeline

-

-

613 6743

331 3642

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Project programme

Work Stages

Mar-18

Apr-18

May-18

Jun-18

Jul-18

Aug-18

Sep-18

Oct-18

Nov-18

Dec-18

Jan-19

Feb-18

Mar-18

Mt Eden Road Access Shaft

Nikau Street Shaft

Water Street Shaft

Pipe Jacking to Nikau Street Shaft

GPT’s Demolition

Key Site setup (including utility diversion/protection) Piling (Mt Eden shaft and Water Street shaft only) Demolition Rockbreaking (Nikau Street shaft only) Shaft construction Pipe Jacking Permanent works and backfilling

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Figure 13: Indicative site layout for Mt Eden site

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Figure 14: Indicative site layout for Nikau Street site

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Figure 15: Indicative site layout for Water Street site

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2.5

Hours of Operation

The designation conditions require that a number of noise and vibration limits are adhered to which restrict noise and vibration generating activity to between 0700 and 2200 (designation conditions 31 to 35).

Works will generally be undertaken between 0700 and 1900 Monday to Saturday. Twenty-four hour working is proposed for all pipe-jacking works. If tunnelling was to stop overnight there is a risk that the TBM may become stuck before its end destination. This would require additional works to complete the Project and recover the stuck TBM. Twenty four hour continuous construction also provides benefits to the pipe jacking operation by reducing the effects of ground water loss and settlement. The twenty-four hour working during tunnelling is also required to reduce the overall duration of the works, which allows the CRL rail tunnel construction works to commence earlier.

2.6

Site Layout and Management

The Project has three small Construction Support Areas (CSA) located around each of the three shafts at 26 Mt Eden Road and 28 Mt Eden Road (Mt Eden Road site), the corner of Nikau Street and Ruru Street (Nikau Street site) and at the end of Water Street in the Wilson carpark area (Water Street site).

Where possible in the CSAs, quieter site activities such as the site offices and storage areas are located on the periphery of the CSA which are closest to surrounding buildings and face externally to the rest of the construction site.

12T

Sufficient space has been provided for at the Water St site for the stockpiling of spoil and pipe overnight. This will limit the need for vehicle access to the site during night works.

12T

Table 8

Construction support areas

Construction Support Area

Location

Area

Mt Eden Road site

26 and 28 Mt Eden Road

3928m²

Nikau Street site

Corner of Nikau Street and Ruru Street

900m²

Water Street site

End of Water Street in existing carpark

1500m²

Once all demolition, utility relocation and utility protection works are complete the Water Street, Nikau Street and Mt Eden Road sites can be established as CSAs. For all three sites this involves setting up the traffic management and site access (as described in the TAPDWP in Appendix D), erosion and sediment controls (as described in the ESCP in Appendix C) and fencing of the site. The CSA layouts are shown in Figure 13 - Figure 15 below.

2.6.1

Security, Safety and Public Viewing

Generally site security will be maintained by establishing temporary fences at the perimeter of the works. These may be anchored to or fixed into the ground where their location is critical (e.g. to eliminate fall risks). Gates will be provided at construction entry and exit points and these will be locked shut when the site is unattended. Site security will be located at each site entrance to prevent unauthorised persons from entering the site.

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Fences and hoardings may become spaces for project information, decoration or artworks on the public facing sides while still shielding drivers from distraction. Where appropriate, opportunities for public views over the works through Perspex windows will be incorporated into hoardings and fences.

2.6.2

Graffiti and Litter

Security fences and hoardings will be inspected for integrity and graffiti as part of a weekly environmental inspection. A small quantity of paint will be kept on site to paint over graffiti rapidly.

Construction Contractor will target painting over graffiti within 48 hours of identifying the problem (although this may take longer if it requires working at height).

The site will be inspected for litter via the weekly inspection form.

The Construction Contractor and AT will discourage graffiti by putting murals and project information on hoardings (where practicable) to avoid providing a blank canvas for graffiti.

2.6.3

Returning the Site to Public Use

This will be detailed in the Urban Design DWP which will be prepared as part of a subsequent Outline Plan of Works process for the CRL Main works. The works on the three sites are programmed to be completed in February 2019. The sites will then be tidied and fenced. They will be made available for the main CRL construction works which will commence shortly after the Project is complete in early 2019. As such, the site will not be left vacant for sufficiently long to warrant them being made available for any other purpose.

The Water Street site will be returned to its original use as an informal parking area prior to the CRL construction works commencing. Manholes will be installed at Water Street and in the road corridor at Nikau Street to facilitate shaft access for operations maintenance purposes. Access to the Mt Eden Shaft will be via access to 28 Mt Eden Road.

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3

This CEMP presents a framework of principles, environmental policy and performance standards as well as processes for implementing appropriate environmental management. The methods for achieving this are presented in detail in the sections below.

3.1

Construction Activities and Associated Environmental Receivers

Key construction activities associated with the Project include the construction of shafts and support areas and installation of the new stormwater main using pipe jacking.

These activities have the potential to affect different aspects of the environment (e.g. traffic, noise).

The Sub-Plans attached to this CEMP detail mitigation measures specific to the environmental aspect and detail further the construction activity which causes the potential effect.

Table 9 summarises key activities which occur in each stage of the project and possible sensitive receivers.

Table 9

Construction activities and receiving environment

Stage

Main activity

Receiving environment

Mt Eden Road shaft

    

  

Water Street shaft

Ruru Street shaft

   

   

Construction of site access Earthworks to create CSA Access shaft construction Concrete base slab Backfilling and installation of riser and dropper

Protect existing stormwater main Installation of piles Shaft construction Backfilling and installation of riser and dropper

Protect Huia 2 Shaft construction, including the breaking and excavation of basalt Concrete base slab Backfilling and installation of riser and dropper

          

Stormwater Buildings (Settlement/Vibration) Residents/Businesses (noise/vibration) Traffic network KiwiRail corridor Stormwater Buildings (Settlement/Vibration) Residents/Businesses (noise/vibration) Traffic network Network Utilities Stormwater Buildings (Settlement/Vibration) Residents/Businesses (noise/vibration) Traffic network

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Stage

Main activity

Receiving environment

Tunnels

   

  

All

     

3.2

Pipe jacking Installation of pipe Slurry separation Mined tunnel construction Enabling works / site establishment Construction and installation of erosion and sediment control devices Construction of permanent stormwater devices Relocation of existing utilities

    

Stormwater Buildings (Settlement/Vibration) Residents/Businesses (noise/vibration) Traffic network Stormwater Buildings (Settlement/Vibration) Residents/Businesses (noise/vibration) Traffic network

Waste management Hazardous substances management

Environmental Risk Register

The Project Risk Register includes environmental risks for the construction activities related to the Nikau Street stormwater main realignment. A risk register for the Project has been developed by MBJV and stored in their document management system.

The information contained in the register provides a guide for the implementation of environmental management activities, controls and monitoring, thus minimising environmental impacts.

3.2.1

Review of the Register

The Risk Register is a ‘living document’ and will be constantly updated to address changing conditions, revised methodologies and each new work area.

The Environment and Sustainability Manager (ESM) is required to maintain and review environmental risks within the register. The Risk Register will be reviewed prior to the commencement of construction activities (taking into account finalised construction methodologies), at regular intervals and when there is a new or changed activity, equipment or location. Changes to legislative requirements may also drive Risk Register reviews. The Register will be reviewed on a quarterly basis as a minimum.

The ESM, with the assistance of environmental and technical experts, will determine whether the CEMP and Sub-Plans require revision to reflect the revised risk assessment. CRLL, as the consent holder, will be responsible for obtaining AC approvals with input from MBJV, if approvals are required, prior to commencing any new or changed activities.

The ESM will inform the Pipejack Manager, relevant staff, Project Director and management team of any changes to the environmental risks within the Project Risk Register.

3.3

Cumulative Effects

Methods to address cumulative effects are outlined for specific activities within the suite of Sub-Plans.

Monitoring for each area includes methods to ensure the effects from the Project are well understood and delineated from effects of concurrent construction projects in proximity.

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3.4

Legislative and Other Requirements

This section details the statutory framework and other requirements for environmental management on the Project and outlines the relevant legislation, policies, plans and consents.

3.4.1

National Legal Requirements and Policies

The MBJV will comply with all relevant legislation and will employ best practice environmental management procedures. Key environmental legislation for management of the Project is identified in Table 10 below.

Table 10 Key national legislation, regulations and standards

National legislation, regulations, strategies and policies Resource Management Act, 1991; Hazardous Substances and New Organisms Act, 1996; Dangerous Goods Act, 1974 and Regulations; Protected Objects Act 1975 for the relevant archaeological and heritage standards/practices; Heritage New Zealand Pouhere Taonga Act 2014; National Environmental Standard – Air Quality 2004 (NES: AQ); National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health Regulations 2011 The MBJV will identify, maintain and continually evaluate compliance with legal and other related requirements that are applicable to delivery of the Project. Legislation and compliance are reviewed by management on at least a 3 monthly basis and when there is a change to legislation relevant to the Project construction works.

3.4.2

Legislation, Standards and Guidelines relating to Environmental Aspects

Table 11 identifies legislation, standards and guidelines which are relevant to specific environmental aspects of the Project and will be read in conjunction with the relevant Sub-Plans of this CEMP.

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Quality Management Plan Document Version 9 Table 11 Summary of the standards, guidelines and specific statutory requirements associated with environmental aspects and detailed in the CEMP Sub-Plans

Environmental Aspect / Sub- Plan

Sub-plans Statutory requirements, Guidelines and Standards

CNVDWP

  

AQDWP

   

ESCP

CDWP

       

HSMP

      

TAPDWP

  

NZS 6803:1999 Acoustics – Construction Noise DIN 4150-3:1999 Structural Vibration (German standard) BS 5228:2009 Code of Practice for Noise and Vibration Control on Structures (British Standard) NZS 6801:1991 Measurement of Sound NZS 6802:1991 Assessment of Environmental Sound Ministry for Environment, Good Practice Guide for Assessing and Managing the Environmental Effects of Dust Emissions 2001 AS/NZ 3580.1.1: 2007 Method for sampling and analysis of ambient air – Guide to siting air monitoring equipment National Environmental Standard for Air Quality (AQNES) Auckland Council – GD05 – Earthwork Erosion and Sediment Control Guidelines Auckland Regional Council – TP10 – Design Guideline Manual Stormwater Treatment Devices Ministry for Environment A Guide to the Management of Cleanfills 2002 Health and Safety in Employment (Asbestos) Regulations 1998 Department of Labour Guidelines for the Management and removal of Asbestos (revised) 1999 Ministry for Environment, Contaminated Land Management Guidelines No 1 to 5 National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health Regulations 2011 Hazardous Substances and New Organisms Act 1996, HSNO regulations and gazette notices Hazardous Substances (fireworks, safety ammunition, and other explosives transfer) Regulations 2003 no. 2003/176 Hazardous Substances (Tank Wagons and Transportable Containers) Regulations 2004 Land Transport Rule 45001/1 and 45001/2: Dangerous Goods 2005 AS/NZ 2430.3 Classification of Hazardous Areas AS 2430.1:1987 Classification of Hazardous Areas – Explosive Gas Atmosphere NS 6101.1:1998 Classification of Hazardous Areas – Flammable Gas and Vapour Atmospheres AS/NZS 238 and AS/NZS 61241.1.2 Electrical Installations in Hazardous Zones Land Transport Rule 45001/1 and 45001/2: Dangerous Goods Auckland City Council Manual of Temporary Traffic Management

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Environmental Aspect / Sub- Plan

Sub-plans Statutory requirements, Guidelines and Standards

HCDWP



Heritage New Zealand Pouhere Taonga Act 2014

3.4.3

Resource Consents and Other Approvals

3.4.3.1

CRL Designation

CRLL, the Requiring Authority for the Project, has obtained a designation which provides for the City Rail Link and all utility relocations required to facilitate its construction within that designation. This includes the work proposed for the Nikau Street Stormwater Main Realignment.

The provisions within this CEMP are required to be complied with as a condition of the designation and will be implemented and maintained throughout the entire construction period for the Project. The CEMP will be updated as necessary (refer to Section ‎5.7 for detail on CEMP review procedures). The designation conditions are listed in Appendix A. As contractors to the Consent Holder, MBJV will take responsibility for maintaining compliance with the designation and resource consent conditions relevant to its scope of works. This will be tracked via a Compliance Management System to be established in conjunction with CRLL. 3.4.3.2

Resource Consents Required

The majority of the proposed works occur within the existing CRL designation. Where the Project works occur within the boundaries of the existing CRL designation they are authorised, subject to compliance with the relevant designation conditions. However, a district consent is required for the works outside the designation.

A regional resource consent has been lodged for Aotea Station to NAL and was approved by Independent Commissioners on 18 November 2016. Following the decision there was an appeal which has now been resolved. The appeal was still live when the reference design was being authorised by Council and therefore to provide for increased construction certainty a separate regional consent package was applied for and authorised. The following resource consents have been obtained for the Contract 6 works:



A land use consent for earthworks pursuant to Rule C1.9.2 (restricted discretionary activity) of the AUP is sought for works within an overland flow path and/or 100-year ARI flood plain.



A land use consent for infrastructure in the 1% AEP floodplain and overland flow path pursuant to Rule E36.4.1.A56 (restricted discretionary activity) of the AUP is sought



A land use consent for construction noise exceedances at Water Street pursuant to Rule E25.4.1.A2 (restricted discretionary activity) of the AUP is sought.



A land used consent for the temporary activities at Water Street pursuant to Rule E40.4.1.A20 (restricted discretionary activity) of the AUP is sought.



A water permit for the diversion of groundwater pursuant to Rule E7.4.1.A28 (restricted discretionary activity) of the AUP is sought.



A water permit for the taking of groundwater associated with a groundwater diversion pursuant to Rule E7.4.1.A20 (restricted discretionary activity) of the AUP is sought.



A discharge permit for the discharge of contaminants from disturbance of land not meeting the permitted activity controls pursuant to Rule E30.4.1.A6 (controlled activity) of the AUP.



A discharge permit to discharge water from dewatering of excavations to land or water pursuant to Rule E4.4.1.A15 (discretionary activity) of the AUP is sought.

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

A discharge permit for discharges of contaminants to air from earthworks pursuant to Rule E14.4.1.A82 (restricted discretionary activity) of the AUP is sought.

Both the district consent for works outside the designation and regional consent for the Project were authorised by AC along with the original reference design Outline Plan of Works (OPW) and CEMP. This CEMP, which has been updated to reflect MBJV revised construction design and methodology, revision 9, supports both the OPW waiver request and resource consent variation applications that will be submitted to AC for approval.

AT will be responsible for obtaining any unforeseen additional resource consents required during construction of the Project.

3.4.3.3

Archaeology Authority Requirements

The proposed works are covered by the Aotea to NAL Archaeological Authority.

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Implementation and Operation

Document Version 9

This section addresses the implementation and operation of the CEMP and the Sub-Plans. The following areas are covered:

     

CEMP Roles and Responsibilities including contact details; Training; Operating Procedures; Emergency Response; Communication and Interfaces; and Complaints Management.

4.1

Environmental Roles and Responsibilities

4.1.1

Overview of Responsibility for this Plan

Each person involved in the Project has equal responsibility to avoid, remedy or mitigate adverse environmental effects. There are three key groups with responsibility for environmental management of the Project:

  

City Rail Link Limited (CRLL) as the Project owner and holder of the resource consents; The Construction Contractor (March Bessac Joint Venture - MBJV) undertaking the works; and AC which audits the works and monitors compliance with resource consent conditions, the CEMP and environmental management Sub-Plans.

The MBJV will appoint Graeme Inglis as an Environment and Sustainability Manager (ESM) as part of the Construction Team during the construction phase of the Project. The ESM will be involved throughout this period to give advice and to ensure that the CEMP and Sub-Plans are implemented and maintained. Further details of responsibilities during the construction phase are included below.

4.1.2

Specific Roles and Responsibilities

The key management roles for each organisation in relation to environmental management during the construction of the Project are outlined in Table 12.

Key roles of personnel as they relate to environmental management during the construction of the Project are detailed below. Roles and responsibilities of personnel which implement specific environmental controls and monitoring programs (such as the contaminated land specialist, arborist and archaeologist) are detailed in the relevant Sub-Plans.

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Organisation

Role

Responsibilities

City Rail Link Limited

Project Manager



Overall responsibility for project compliance and performance in relation to environment, quality assurance and incident management.

Resource Planner

 

Representing the Consent Holder to monitor compliance

Health & Safety Manager



Compliance with Health & Safety and incident management.

Project Director

  

Overall responsibility for site environmental management.



Inspections, auditing and checking of environmental management practices and procedures.



On-site compliance with consent conditions and other requirements and tracking compliance information.



Report to AT changes to construction techniques or natural environmental changes which require alterations to existing consents or new resource consents.



Prepare, review and update of CEMP and relevant SubPlans.



Facilitate and oversee environmental monitoring. Update and maintain the environmental portion of the Project Risk Register.

 

Training of all staff including subcontractors.

 

Overseeing subcontractors.

Construction Contractor

Pipejack Manager

Environment and Sustainability Manager

Project and Site Engineers

Subcontractors

4.1.2.1

Site Managers

Obtaining new or altered resource consents required during construction (if any).

Reviewing and reporting on environmental performance.

Inspection of works to assess compliance with the CEMP and Sub-Plans.

Development, management and monitoring of construction procedures, including incorporating environmental and sustainability requirements into procedures on site.

Adherence to the CEMP and Sub-Plans.

All Staff



Attending tool-box talks and environmental training including familiarisation with the requirements of the CEMP and Sub-Plans (as directed by the Trainer);



Responsible for reporting environmental incidents, complaints, defects and other problem areas to senior staff as they arise on site;



Ensuring that required processes and procedures for environmental management are followed;

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

Ensuring that environmental mitigation and protection measures are maintained and working correctly;



Within day to day work responsibilities, ensure the environment both on site and adjacent to the site is protected and respected;

 

Ensure the site is tidy and all litter is placed in bins; and Ensure all graffiti is removed from the site boundary and security fences as soon as possible.

4.1.2.2

Project Director

 

Takes ultimate responsibility for compliance with resource consent conditions;

 

Approves environmental plans prior to issue; and

Notifies CRLL of any environmental non-compliances (e.g. AC, Heritage New Zealand) or other environmental incidents;

Ensures adequate resources are provided to ensure environmental issues and obligations are appropriately managed.

4.1.2.3

Design Manager



Incorporates environmental requirements into design as required by designation and consent conditions and the CEMP and Sub-Plans; and



Advises the ESM of any design issues that may impact on the environment.

4.1.2.4

Project Engineer



Provides leadership to the site team to achieve Project environmental objectives and targets to ensure a high level of performance is achieved;



Responsible for ensuring environmental controls and erosion and sediment control works are installed, modified and maintained as appropriate for each stage of construction;

 

Assists in the development, implementation and review of Project environmental objectives; and Ensures all staff on-site are aware of environmental requirements at all times and sees that routine maintenance to erosion sediment control facilities and management measures continue with ongoing effectiveness.

4.1.2.5

Pipejack Manager



Reviews work packages against Project environmental objectives and targets and CEMP to ensure a high level of performance is achieved;



Develops, implements and monitors construction methods ensuring compliance with consents and CEMP and Sub-Plans;



Compliance with all legislation, regulations and consent conditions in relation to the work being undertaken;



Demonstrates understanding of major environmental and community issues and environmentally sensitive areas;



Implement environmental protection measures in accordance with the contract and the CEMP and Sub-Plans;



Ensure that all workers are trained in relation to environmental measures;

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 

Report all incidents, system defects and complaints to the Site Supervisor; and Ensure all workers and others (e.g. subcontractors and suppliers) comply with environmental operating procedures and community relations protocols.

4.1.2.6

Environmental and Sustainability Manager and Team



Provides leadership to ensure staff are motivated to achieve environmental standards, and comply with all resource consent and designation conditions;



Develops, implements and reviews environmental management systems including the CEMP and Sub-Plans for the Project;



Co-ordinates the interfaces and communications with external agencies and stakeholders in relation to environmental management on the Project in conjunction with Communication and Consultation Manager;



Manages and co-ordinates all consents required (current), and construction monitoring and maintains and submits relevant reporting and records to the AC and AT, as required;



Undertakes regular site inspections and audits to ensure compliance with the CEMP and Sub-Plans and consent conditions;

  

Input records of all environmental monitoring results to Fulcrum;



Coordinates site archaeological monitoring and protection requirements and provides necessary training and advice to site staff;



Coordinates all site monitoring including but not limited to groundwater, settlement, water quality, dust, noise, and vibration monitoring and provides necessary related training and advice to staff in relation to this monitoring;

    

Trains staff in site specific environmental procedures;



Ensures spill kits are available and stocked and provides training on equipment use.

Coordinates environmental interfaces with consultants, subcontractors and suppliers; Provides liaison point between site staff and arborist/subcontractors with regard to tree protection/removal;

Coordinates environmental emergency responses; Notifies Project Director, of any significant environmental non compliances; Responsible for resolving issues of environmental non compliances; Manages maintenance and monitoring of the effectiveness of erosion and sediment controls, stormwater devices and other control devices; and

4.1.2.7

Communications and Consultation Manager



Responsible for notifying residents of works occurring within the near vicinity and managing mitigation as required;

 

Disseminates information to the public as approved by CRLL; and Primary contact for Project related complaints and enquiries.

4.1.2.8



Project Technical Specialists

Prepares the Sub-Plans for the CEMP;

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 

Undertakes monitoring as required by the individual Sub-Plans; and Liaise with the ESM to confirm compliance with the Sub-Plans.

4.1.3

Contact Details

Contact details for the MBJV Graeme Inglis - Project Manager and ESM

Phone 0274557299 Email : ginglis@marchcon.co.nz

Martin Hughes – Northern Region Manager

Phone: 0273846576 Email : mjhughes@marchcon.co.nz

4.2

Environmental Training and Induction

The environmental competency and experience requirements for all staff positions are contained in the relevant Position Descriptions. Recruitment and procurement processes are conducted with the aim of engaging personnel with the required competency and experience.

All personnel will receive training of a type and level of detail that is appropriate for the environmental aspects of their routine and emergency work assignments. As a minimum, all personnel are required to satisfactorily complete the Project Induction Training. Other mechanisms of communicating environmental controls are through the induction training, tool box talks and prestart meetings, all of which are described below.

Other training needs are assessed on a job-by-job, and position-by-position basis.

4.2.1

Induction Training

The Project Induction includes a presentation of the requirements of this CEMP and in particular the requirements of the issue specific Sub-Plans, incident response, emergency procedures and spill management. The purpose of the induction is to ensure that, at a minimum, the employee or subcontractor:



Understands the importance of conforming with the environmental policy and procedures and to the requirements of this CEMP;



Is aware of the significant environmental values and issues within the vicinity of the Project alignment and the potential impact of the construction activities on these values;



Understands sustainable activities and environmental control measures available to assist the Project to minimise its environmental impact;

   

Is aware of all conditions of environmental licences, permits and approvals; Understands the potential consequences of a departure from the established procedures; Is aware of the roles and responsibilities relating to environmental management for the Project; and Is aware of the emergency response and incident procedures.

4.2.2

Tool Box Talks

Tool Box Talks are conducted for site personnel to deliver specific training in an aspect of work or controls. This may include spill kit training or correct erection of a silt fence. This training provides site personnel with ongoing environmental training and information throughout the Project.

Participants in Tool Box Talks shall sign the attendance sheet.

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4.2.3

Pre-Start Meetings

Pre-start meetings are used by the supervisors and foremen to explain the work to be done in the upcoming shift. All operational aspects of the task are discussed including safety and environmental issues and controls, particularly if there are new hazards or if there has been a recent incident.

An environmental management representative will attend as applicable to explain new environmental controls or reiterate existing controls.

4.3

Operating Procedures

The following sections of the CEMP describe the environmental aspects associated with the construction phase of the Project along with the operational controls and mitigation measures. The appended Sub-Plans of this CEMP detail the controls and measures for each environmental aspect are cross-referenced.

4.3.1

Network Utilities

Consultation with Network Consultation and co-ordination with Network Utility Operators (NUO) will be ongoing throughout the duration of the construction of the Project and will continue to be undertaken in accordance with the ‘Principles and Objectives’ and ‘How we will communicate and consult’ sections of the Communication and Consultation Plan (Appendix J). The Construction Contractor will also utilise the strategies outlined in the Engagement Tools section of the Communication and Consultation Plan.

The following NUO’s have been consulted with in order to ensure the continued operation of Network Utilities throughout construction of the Project (unless otherwise agreed with the NUO) and to ensure that relocation and protection of applicable utilities occurs prior and during Project Construction:

      

Vector Electricity Vector Gas Vector Communications Chorus Vodafone AC Stormwater Watercare Services

Consultation has included workshops and ongoing liaison through emails, phonecalls, and onsite and offsite meetings. No methods or measures of construction were disputed during consultation. Prior to excavation works for utility relocations, all utilities in the excavation area will be physically identified by GPR (Ground Penetrating Radar) (or similar techniques) and marked out on the ground. In order to ensure the continued operation of the utilities and to ensure the NUO have access to existing utilities for maintenance/emergency access and repair at all reasonable times, regular consultation and coordination with all network utility providers will be undertaken throughout construction of the Project.

This will be through meetings, workshops, regularly scheduled meetings, phone calls and emails.

4.3.1.1

Provision of Drawings to Network Utility Operators

All new utilities being installed on the Project will be surveyed by a registered surveyor and transferred into a drawing which satisfies each of the service providers specific ‘as built’ requirements. This information will be provided to the service providers.

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4.3.1.2

Network Utility Site Obligations

All NUO and their contractors are required to adhere to the obligations outlined within this CEMP while undertaking work within the area of the Project site. This includes all personnel undertaking the relevant induction and training processes as outlined within section 4.2 of this CEMP and complying with the operating procedures outlined within section 4.3 of this CEMP.

4.3.2

Erosion and Sediment Control

An ESCP is included in Appendix C. The ESCP provides for the management of all bulk earthworks to minimise any discharge of debris, soil, sediment or sediment-laden water beyond the site to either land and/ or stormwater drainage systems. The ESCP follows the principles of erosion and sediment control which are well understood by the contracting industry, and have their basis in the AC GD05 ‘Earthworks Erosion and Sediment Control Guidelines ‘ Earthworks can be divided into excavation associated with construction of the three shafts, trenching, and the removal of spoil resulting from pipe jacking. In addition to compliance with TP90, other measures to mitigate erosion and sediment runoff include standard dust control and bunding of stockpiles. All excavated material will be removed from the construction areas as soon as practicably possible and taken to an appropriately licensed landfill facility.

4.3.2.1

Chemical Treatment Plan

A Chemical Treatment Plan (CTP) will be developed by MBJV and submitted to AC for their certification prior to implementation if required.

4.3.3

Traffic, Access and Parking

A Transport, Access and Parking Delivery Work Plan (TAPDWP) is included in Appendix D. The objective of the TAPDWP is to avoid, remedy or mitigate the adverse effects of construction on transport, parking and property access by managing the road transport network for the duration of construction, maintaining pedestrian access to private property as all times, and provided on-going vehicle access to the greatest extent possible.

The TAPDWP outlines outlining onsite car parking management and methods for encouraging travel to the site using forms of transport other than private vehicle to assist in mitigating localised traffic effects.

4.3.4

Building Condition Surveys

Building condition surveys will be undertaken in accordance with conditions 46.1 - 46.4 of the designation conditions where it is assessed that there is potential for damage to buildings or structures arising from construction.

Building condition surveys will be undertaken for the buildings listed in Appendix 1 and 2 of the designation conditions. The building condition surveys will generally be undertaken as follows:

 

The building surveys will be undertaken by an independent senior qualified person The survey shall include:  Any information about the type of foundations  Existing levels of damage (aesthetic, superficial, affecting levels of serviceability)  Whether observed damage is associated with structural damage  Susceptibility of building or structure to further movement

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 Photographic evidence



MBJV will provide the building condition survey structure survey report to the property owner and AC within 15 working days of the survey being undertaken



If requested by a building or structure owner where a pre-construction survey was undertaken, the Construction Contractor will undertake a visual inspection. This is in addition to monthly visual inspections until the completion of dewatering of the Project



The Construction Contractor will carry out visual inspections of the surrounding ground and external building facades of the listed buildings adjacent to the tunnel trench to monitor any deterioration or movement of any pre-existing cracks

4.3.5

Construction Noise and Vibration

Construction Noise and Vibration is addressed by the Construction Noise and Vibration Management Plan (CNVMP) Appendix E. Construction noise and vibration will be generated by construction equipment and activities at the CSA, including rotary bored piling and the use of an excavator for shaft construction and during the pipe jack construction.

Throughout the construction phase, noise and vibration effects will be carefully managed through the implementation of the CNVMP and where required the preparation and implementation of Site Specific Noise and Vibration Management Plans (SSNVMP).

4.3.6

Lighting Spill and Glare

During construction, temporary lighting may be required in the main construction areas where sufficient natural light is not available to undertake the works. Spill lighting may cause a nuisance to surrounding residents and businesses. Glare from temporary light has the potential to cause a disabling effect to drivers of vehicles.

The principal objectives for the management of temporary lighting are to:

  

Minimise the nuisance level to adjacent residents/building occupiers of the works; Minimise the impact of glare on the surrounding road environment; and Increase employee and subcontractor awareness of their obligations with regard to minimising effects of light spill on adjacent neighbours.

MBJV will minimise light spill by selecting / procuring light fittings that provide a defined directional beam. Lights will be mounted in elevated positions so that they may point down towards the works, rather than aiming across the work space and increasing the risk of light shining into adjacent buildings.

Night time light audits will be carried out once the temporary lighting is installed and following any changes to the temporary lighting on site (10pm to 7am). The audits will involve a visual inspection around the site boundary to look for errant light emissions and to identify any light fixtures that may be faulty or misaligned. Results will be noted on the weekly environmental inspection sheet to be addressed by the Construction Manager.

4.3.7

Historic Character and Archaeology

A Historic Character DWP (HCDWP) is included in Appendix F and addresses the management of any adverse archaeological effects that may result during the Project.

A Built Heritage section is not required as the buildings to be demolished at 26 and 28 Mt Eden Road and 16-18 Ruru Street are late 20th century buildings with no built heritage values. The nearest

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building registered as having heritage values is over 100m away from the proposed works. This DWP will therefore only cover archaeology and will not include historic heritage as it is irrelevant to the works.

The HCDWP establishes procedures to be followed in the event of archaeological remains being discovered. An Archaeological Authority under Section 44(a) of the Heritage NZ Pouhere Taonga Act 2014 (HNZPTA) has been obtained. The management of any pre-1900 archaeological sites exposed within the Project area must be carried out in accordance with the Archaeological Authority.

4.3.8

Trees and Vegetation

Tree and vegetation management is addressed through a Trees and Vegetation DWP (TVDWP) contained in Appendix G. The purpose of the TVDWP is to avoid the removal of scheduled trees as far as practicable.

There are no scheduled trees within the Project area. As such the TVDWP will describe the trees (non-scheduled only) that will be removed as part of surface construction works, including a list of trees which have root systems or foliage within or overhanging the surface designation footprint.

Mitigation of tree removal (via replanting) will be included in a future Urban Design DWP for the main CRL works (see section ‎4.3.9). The Project Communication and Consultation Plan (Appendix J) details how consultation will be conducted with AC Parks Department and Mana Whenua and how communication is undertaken with the general public on the management of the adverse effects relating to the removal of trees and vegetation.

4.3.9

Urban Design

As this CEMP is specific to enabling works for the CRL it does not include provisions for Urban Design. These will be addressed on a project wide basis in a subsequent OPW and CEMP which will address such matters through an Urban Design DWP (UDDWP). This approach will ensure consistency of urban design outcomes across all aspects of the CRL project.

4.3.10

Contaminated Soils

A Contamination DWP (CDWP) is included in Appendix H. The CDWP provides the framework for managing contamination hazards and mitigation measures relevant to the expected conditions that will be encountered while earthworks are being undertaken. The CDWP outlines proposed soil management and contingency measures, and also addresses Health and Safety issues associated with construction works on contaminated land.

4.3.11

Air Quality

During the construction phase there is potential for the discharge of contaminants to air, such as dust.

An Air Quality DWP (AQDWP) is included in Appendix I. The purpose of this AQDWP is to avoid, remedy or mitigate the actual or potential adverse air quality effects during construction.

4.3.12

Hazardous Substances

Hazardous substances will be kept on site within specified hazardous substances storage areas. In order to manage the storage, handling, transport and disposal of these substances, a Hazardous Substances Management Plan (HSMP) will be developed by the Construction Contractor which details:



A list of all hazardous substances kept on site, include class information and Material Safety Data Sheets (MSDSs);



Requirements for proper storage, handling, transport and disposal of hazardous substances; and

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

Spill response procedures.

The HSMP is additional to the management plans required by the designation conditions for the Project, but is not required to be certified by AC.

4.4

Emergency and Incident Response

An environmental emergency is an event which has a detrimental effect on the surrounding environment. A detrimental environmental effect is something that causes significant harm to the environment, which is not legally allowed and requires immediate response. An environmental emergency can also be a deviation from the environmental management system defined in the CEMP and its Sub-Plans. This means there has been a failure to follow the established process or procedures that help the contractor achieve best practice.

Examples of environmental emergencies include, but are not restricted to:

  

Significant (large volume) chemical / oil spill.

Excessive discharge of sediment to the stormwater system.

Hazardous substance release to air.

4.4.1

Emergency Response Plan

An Emergency Response Plan (ERP) will be prepared for the Project by MBJV. This ERP will take into account the following factors:

    

The parts of the site or adjoining properties likely to be affected; The degree of predictability of the emergency; The likely speed of onset; The likely effect of the emergency; The contents of the ERP will include:  description of the potential emergency;  the person responsible for actioning the ERP;  the equipment required to deal with the emergency including rescue equipment;  emergency contact numbers;  direction to site workers and other affected persons on what they are required to do;  the methods used to deal with the emergency (e.g. how to use specific equipment

As necessary, emergency services such as Police, Fire Brigade, and Ambulance are to be contacted and invited to visit the site in order to become aware of site access and other emergency considerations.

The ERP will incorporate the following components:

    

Emergency contact list (for the above); Emergency Reporting Instructions; Emergency Muster Point Location; Emergency Response Co-ordinator Action Plan; Emergency Personnel and Equipment.

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The ERP will be displayed in prominent locations around the site and employees will be trained in its requirements. All relevant Project personnel, subcontractors and relevant emergency agencies will be instructed and rehearsed, as appropriate, in the requirements of the ERP. The ERP is additional to the management plans required by the resource consents and Designation conditions for the Project, but is not required to be certified by AC.

4.4.2

Incident Response

An environmental incident is an occurrence which has (or potentially could have had) a negative or ‘adverse’ effect on the environment. An adverse effect is something that causes (or could have caused) environmental harm. This means there has been a failure to follow the established process or procedures that help the Project achieve best practice (e.g. failure to report a spill).

Environmental incidents include but are not restricted to:

  

Spills; Unforeseen impacts on areas of high environmental value such as archaeology; and Consent non-compliances (e.g. noise, sediment).

A Spill Response Plan for the Project (appended to the ERP) will be developed by the MBJV and will detail the actions to be followed in the event of a spill (including training).

During the construction phase, the ESM will be responsible for providing training and/or orientation to employees or subcontractors that addresses the proper action regarding spills.

The MBJV will ensure that spill response materials are available, commensurate with the type, quantity and storage arrangements for Hazardous Substances on site.

As deemed necessary, vehicles (e.g. utility vehicles), heavy equipment (e.g. dozers, excavators), pumps, and generators will have spill kits that, at a minimum, will contain sufficient oil absorbent material to contain (e.g. oil absorbent boom) and cleanup any drips, leaks, or spills (e.g. ruptured hydraulic line) and plastic bags to contain any contaminated absorbents, soils, or wastes. Bags containing used cleanup material will be transported to the designated hazardous material/waste storage area for proper drumming, labelling, and classification prior to off-site disposal.

The response to various environmental incidents is outlined in the relevant Sub-Plans. For serious incidents the immediate response may involve stopping works until a solution to manage the incident is developed. The only exception to this is if the works relate to the safe and continuous operation of the TBM, where 24 hours operation is required (as outlined in Section ‎2.5).

4.4.3

Notification Procedure

Environmental incidents shall be recorded. The cause of all incidents will be subject to an investigation, convened by the ESM to determine the root causes of the incident and to ensure that remedial / corrective action is able to be implemented to ensure a repeat of the incident is avoided.

In the event of an environmental incident, the Construction Contractor will provide CRLL and AC with notification as per the matrix outlined in Table 13 below

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Severity Level

Incident Classification

Insignificant

Event that occurs within established controls, e.g. a leak or small spill within a spill containment bund.

Event that breaches established controls but with no effect beyond the site boundary Consent breach Environmental harm beyond the site boundary

Minor

Serious

Notification requirement to CRLL Construction Management Via monthly report

Incident Report Form to CRLLConstruction Management

Investigation Team

Investigation Report to be supplied to CRLL

n/a

n/a

n/a

Within 12 Hours

Within 48 Hours

Construction Contractor

Within 10 Working Days

Immediately upon identification

As soon as practical but within 12 Hours

CRLL & Construction Contractor Management to allocate resources as appropriate

Within 10 Working Days

A summary and review of incidents for the duration of the Project and for the relevant month will be included in the Project Monthly Report.

CRLL shall be notified of incidents that trigger notification as defined in the incident reporting and investigation procedure. These triggers include off site discharges, unauthorised disturbance or destruction of heritage sites, and breaches and non-conformances of licences and permits issued for the Project.

The Project Director is responsible for notifying CRLL and parent companies of reportable incidents.

CRLL is responsible for notifying relevant Regulators.

4.5

Communication and Interface with Stakeholders

A Communication and Consultation Plan (Appendix J) has been developed which details the strategy, tools and process to manage communication and engagement between MBJV, its stakeholders and the community throughout the construction and monitoring periods for the Project.

The CCP sets out how the MBJV will inform the community of Project progress and construction dates, foster good relationships with the community, obtain feedback from stakeholders, and outline how complaints and queries will be responded to.

The CCP has been prepared in consultation with stakeholders, directly affected parties and affected in proximity parties.

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4.5.1

Public Safety

All sites will be contained within fencing, signage displayed and access into site limited and controlled through site sign-in procedures. Crime Prevention Through Environmental Design (CPTED) principles will be applied during site set up.

Generally site security will be maintained by establishing temporary fences at the perimeter of the works. These may be anchored to or fixed into the ground where their location is critical (e.g. to eliminate fall risks). Gates will be provided at construction entry and exit points and these will be locked shut when the site is unattended. Noise barriers will be integrated with the fences.

All security fences, boundary fences around the construction sites will be maintained in good order to ensure their ongoing functionality.

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Environmental Monitoring

Scheduled monitoring of environmental performance is required throughout the construction phase of the Project to ensure that no adverse impact on the environment occurs. This enables the overall effectiveness of the environmental controls to be determined and allows areas of non-compliance to be identified so corrective actions can be taken.

The specifics of monitoring for each environmental element are detailed in the individual Sub-Plans, including any monitoring requirements, the frequency of the monitoring to be undertaken and the appropriate responsible person, as required within contract documentation or environmental approvals issued for the Project.

In general, monitoring will be conducted on a routine basis. However additional monitoring may be required in the event of a complaint or incident, or after a rain event in the case of water quality monitoring.

The ESM is responsible for the implementation of on-site measurements of environmental aspects, including water quality. External specialists may be used, where required, to conduct specialist monitoring, including noise, vibration, air quality, and non in-situ water monitoring. The initiation of such monitoring is on an as-needed basis and may be in response to contract requirements, complaints or internal requirements.

Environmental monitoring results will be reported to the AC and/or other parties (Such as Heritage New Zealand) when required by consent conditions.

5.1.1

Collaborative Working

The key contacts listed in Table 14 below will meet regularly to discuss:

     

Compliance with the designation conditions and the CEMP and DWPs; Material changes to the CEMP and DWPs; Any matters of non-compliance and how they have been addressed; The results of, need for, and frequency of site inspections; Environmental monitoring results; and Any other agenda items mutually agreed by the Key Contacts

Table 14 Collaborative working contacts

Organisation

Title

Name

Auckland Council

Compliance Monitoring Officer – Resource Consents

Laura Scaife

MBJV (Construction Contractor)

Environment and Sustainability Manager

Graeme Inglis

City Rail Link Limited

Principal Planner

Richard Jenkins

5.1.2

Collaborative Meeting

At least five working days prior to construction commencing the key contacts listed above shall mutually agree an initial schedule for a Collaboration Meeting. The meeting shall be held at least

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monthly unless a different timeframe is agreed with the Auckland Council Compliance Monitoring Officer.

Collaboration Meetings shall continue for at least 6 months following the completion of construction.

Additional meetings between Council and The MBJV/ CRLL specialists may be established on a one off or ongoing basis by mutual agreement of the Key Contacts listed above. These ‘Specialist Meetings’ will allow for the discussion and resolution of technical issues and will provide feedback to the Key Contacts to facilitate decision making in the Collaboration Meeting.

5.2

Environmental Inspections

Weekly Environmental Compliance Inspections are conducted by the ESM (or a delegate). The findings of these inspections will be recorded, along with any required remedial actions, who is responsible for implementing these actions and in what timeframe. The weekly inspection record is to be provided to CRLL as part of the Contractor’s weekly report. These shall be monitored to ensure that they are closed out in the required timeframe. An appropriate framework will be confirmed by the Construction Contractor prior to works commencing.

5.3

Environmental Auditing

Internal (by Project Staff) Environmental Auditing is required to determine whether the environmental management system conforms to planned arrangements and is properly implemented and maintained.

Internal audits will be completed on a quarterly basis by the ESM (or delegate). Findings from the audits will be presented to the Construction Manager within two weeks of conducting the audit.

Internal environmental audits focus on environmental and sustainability matters within a single operational procedure or a group of related operational procedures (e.g. erosion and sediment control procedures, waste management reporting.)

External Environmental Audits will be completed at least annually, to assess the effectiveness of the Environmental Management System.

5.4

Corrective and Preventative Action

Corrective or preventative actions identified during environmental audits shall be commensurate to the magnitude of the problem and appropriate to the environmental harm encountered.

Ultimately the Project Director has responsibility for closing out any corrective or preventative actions resulting from the environmental inspections, audits and external regulatory compliance monitoring.

Additionally, assessment and follow-up reviews on the effectiveness of corrective and preventive actions will be undertaken and the outcomes documented, communicated and implemented.

Compliance shall be included as a regular agenda item at management meetings and project meetings. Minutes from each meeting shall record and assign actions to individuals where appropriate.

5.5

Reporting

Reporting requirements will evolve as the Project progresses. In the early phase emphasis is on the establishment of systems, controls and competence of all personnel, while later the emphasis will shift to monitoring performance. When nearing completion (as applicable) the focus will be on final reports to address approval requirements.

The ESM is responsible for managing the Environmental Reporting Program. The Project Director is responsible for submitting the reports required externally.

Reporting requirements include:

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  

Project internal reporting requirements; Reporting to CRLL and key stakeholders as specified within contract documents; and Specific reporting to AC where required – refer specific sub-management plans

5.6

Document Control

The ESM is responsible for ensuring all relevant documentation is submitted and maintained within the Project filing and document control system.

Applicable documentation will include but not be limited to:

      

All environmental incidents reports and investigation outcomes; Weekly and fortnightly environmental checklists and reports files by contractors; Formal and informal audit and environmental inspection reports; Any laboratory analysis submitted by external consulting groups; Records of environmental training; Chain of custody records; and Minutes of meetings.

5.7

CEMP Review

This CEMP (including Sub-Plans) will be updated, with the necessary certification by AC, throughout the course of the Project to reflect any changes to consent conditions, relevant legislation and material changes associated with changes to construction techniques or the natural environment. Additionally, they may be updated in response to any unforeseen adverse effects arising from construction, unresolved complaints or environmental incidents. A review may also be initiated by AC in response to comments or recommendations received from AC (Team Leader Central Monitoring) or as a result of the CCP process.

5.7.1

Management Review

A management review of the CEMP and Sub-Plans will be undertaken at least annually by the Project Management team. The management review will be organised by the ESM. The review will take into consideration:

        

Site personnel comments; Audit findings and recommendations; Environmental monitoring records; Environmental complaints, incidents and emergencies; Details of corrective and preventative actions; Environmental non compliances; Changes to organisational structure and roles and responsibilities; On-going compliance with objectives, conditions and targets; and Changes to industry best practice standards, legislation and other statutory requirements.

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The review process will include looking at the environmental controls and procedures to make sure they are still applicable to the activities being carried out. Reasons for making changes to the CEMP will be documented. A copy of the original CEMP document and subsequent revisions will be kept for the Project records, and marked as obsolete. Each new/updated revision of the CEMP documentation will be issued with a revision number and date to eliminate obsolete CEMP documentation being used.

5.7.2

Review Certification

Any change to the CEMP or management plans required by the resource consents shall be submitted to AC (Team Leader Central Monitoring) for certification and no activity reliant upon a change to the CEMP can be undertaken until the change has been certified (unless the activity is related to the safe and continuous operation of the TBM). CRLL will request AC’s (Team Leader Central Monitoring) determination as to whether the proposed change can be certified, in writing, within 10 working days of submission of the change.

Any material change proposed to the DWPs required by the designation conditions relating to an adverse effect shall be submitted for approval to the AC Compliance and Monitoring Officer, at least 10 working days prior to the proposed changes taking effect. If any changes are not agreed, the relevant provisions of the RMA relating to approval of outline plan of works shall apply.

A record of feedback from the CLG and IPRP for the CEMP and Sub-Plans is located in Appendix K.

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Appendix L: Addendum to Delivery Work Plans The Project Description given below is intended as a replacement for the Project Descriptions and Overviews given in all the Delivery Work Plans appended to this document.

1.0 1.1

Project Description Nikau Street Stormwater Main Realignment

The purpose of the Project is to enable the construction of the future CRL tunnels by realigning the Nikau Street Stormwater Main which currently represents a critical CRL project constraint. The Project works involve the construction of a replacement stormwater main from the eastern end of Water Street, where it then passes beneath the CRL East Facing Connection (EFC) east of Mount Eden Road, it then continues west to connect into the existing main at the corner of Nikau Street and Ruru Street. The Project includes the construction of a central shaft at Mt Eden Road and shafts at Water Street (Drive) and Nikau Street (Retrieval).

The realigned pipeline will be 2,000mm (internal diameter) and is proposed to be constructed along a horizontally curved (R150m and 802m) alignment which is required to reach the proposed shaft locations. The realigned pipeline and shaft locations have been positioned to avoid the proposed rail alignment, basalt extents and existing properties.

One tunnel drive is proposed from the Water Street shaft. Due to the depth of the upstream and downstream connection points as well as the requirement to pass beneath the proposed CRL alignment (approximately 15-20m), pipe jacking is the proposed construction methodology. Pipejacking is a trenchless construction technique where a Tunnel Boring Machine (TBM) with a pressurised slurry system excavates material. Pipes are then horizontally driven using a hydraulic ram from a series of vertical shafts. Therefore, it is proposed to install the following shafts, along with associated CSA’s, at the following locations:



An access shaft adjacent to Mount Eden Road (approximately 2.7m in diameter), known as the “Mount Eden Road Access Shaft” is located between Mount Eden Road and the North Auckland 2 Line (NAL). The construction activities shall be supported by a CSA of approximately 3928m (plus 2 an additional 350m for a temporary vehicle access ramp) surrounding the shaft (Appendix B).

P

P



A launch shaft at Water Street (approximately 9.25m diameter and 16.7m deep), known as the “Water Street Shaft” is located within an AT owned vacant site which is currently used as a carpark.

The shaft is to be positioned between the end of Water Street and the existing NAL lines. It is 2 proposed to be supported by a CSA of approximately 1500m surrounding the shaft (Appendix B).

P



P

A reception shaft at Nikau Street (varies from approximately 6.1m to 10.9m in diameter and 15.4m deep) known as the “Nikau Street Shaft” is located within the footpath at the corner of Nikau Street 2 and Ruru Street. It is proposed to be serviced by a CSA of approximately 900m at 16-18 Ruru Street (Appendix B).

P



P

P

P

2

An additional construction support area of 2728m will be located at 28 Mt Eden Road.

P

P

The shaft locations have been strategically selected to avoid clusters of utilities. However, it is expected that some utilities will not be able to be avoided and therefore will need to be protected or relocated before piling and shaft excavation. AT is currently engaging with relevant utility stakeholders

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as part of this work and it is anticipated that existing services will either be relocated or protected as part of the access shaft formation.

Other ancillary works are required to enable the construction of the Project and include:



Relocation and protection of various minor utilities which clash with, or are in close proximity to, the shafts.

 

Temporary protection of the Huia No. 2 watermain adjacent to the Nikau Street shaft.

  

A open cut connection to the existing pipe at Water Street.



The demolition of 28 Mount Eden Road to enable the use of the site as a construction support area.

The floor slab and external impervious surfaces will remain in place. No excavation is proposed on this site.



Three new connections are required to connect the realigned Nikau Street Stormwater Main to the existing stormwater mains within Ruru Street at the corner of Nikau Street and Ruru Street.



In addition, three permanent access shafts are proposed within the reception and launch shafts during reinstatement at Water Street, Mount Eden Road and Nikau Street to accommodate access associated with the ongoing operation and maintenance of the realigned Nikau Street Stormwater Main.



Three new Gross Pollutant Traps (GPT’s) on Boston Road (two) and Normanby Road (one). These works will require excavating pits of approximately 6 m wide, 6 m long and 7.9 m deep to install new 2.5 m wide GPTs and manholes (Figure 3).

A section of mined tunnel of approximately 7m will extend under Nikau Street to connect the realigned section of pipe from the Nikau Street shaft into the existing stormwater main at Ruru Street.

The demolition of 26 Mount Eden Road to enable the construction of the Mount Eden shaft.

The demolition of 16-18 Ruru Street to enable the property to be used as a worksite and reduce disruption to the adjacent roads and properties. The Nikau Street shaft cannot be fully located within this property as a permanent manhole and riser is required by AC for maintenance access at this location.

The Project works are anticipated to take up to 13 months depending on the methodology chosen by the Construction Contractor. Subject to obtaining resource consent, works are expected to commence in March 2018.

Whether the existing abandoned alignment is backfilled or used for stormwater storage is still to be agreed with Council.

2.0 2.1

Construction Methodology Works Summary

In Summary, the Project works will consist of the following key activities with these activities being described in more detail in section 2.0 of the CEMP. 1. Building demolition 2. Locate/protect/relocate minor conflicting services at Mt Eden Road 3. Excavate and construct new Mount Eden Road access shaft

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4. Locate and protect existing Water Street shaft (which serves the existing stormwater pipe – this shaft will not be used during construction) 5. Locate/protect/relocate other minor conflicting services at Water Street 6. Excavate and construct new Water Street launch shaft 7. Launch pipe jack from Water Street driving towards the Nikau Street Shaft 8. Put in place temporary traffic control measures at Nikau Street/Ruru Street 9. Locate/protect/relocate other minor conflicting services at Nikau Street 10. Excavate and construct new Nikau Street reception shaft 11. Retrieve the pipe jacking machine at the Nikau Street reception shaft 12. Complete mined connection works to existing 2,000mm dia. stormwater main at Water Street shaft and Nikau Street shaft 13. Install GPT’s 14. Divert flow to new stormwater main 15. Seal connections to existing stormwater main

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