Auckland City Rail Link
In association with:
Assessment of Effects on the Environment
Resource Consent Package 1 Britomart Station to Wyndham
Street Section
Document Ref:
CRL-SYW-RME-000-RPT-0036
Revision: 1
19 December 2014
INTERNAL WORKING DOCUMENT
COMMERCIAL IN CONFIDENCE
Contents
Glossary of Terminology
Glossary of Abbreviations and Units
1
vii
8
Introduction
11
1.1
Purpose of Report
11
1.2
CRL Overview
12
1.3
Approach to Obtaining Resource Consents
14
1.4
Planning Approvals Required
16
1.5
Further Approvals Required
18
1.6
General Archaeological Authority
18
1.7
Resource Consent Application Suite of Documents
19
2
Applicant and Property Details
20
3
Project Description
22
3.1
CRL: Britomart to Wyndham Section
22
3.2
Active Construction Zones
23
3.3
Construction Support Areas
25
3.4
Earthworks
26
3.5
Ground Settlement
26
3.6
Groundwater Management
26
3.7
Overland Flow Paths and Flood Plains
27
3.8
Stormwater Management
27
3.9
Contaminated Ground Management
28
4
5
6
3.10 Reinstatement and Rehabilitation
28
3.11 Construction Programme
28
3.12 CRL Operation
29
3.13 Consideration of Alternatives
29
Existing Environment
31
4.1
Natural Environment
31
4.2
Physical Environment
33
Reasons for Application
37
5.1
Consents Required under Regional Plans
37
5.2
Consents Required Under a National Environmental Standard
52
5.3
Resource Management Act 1991 Assessment
53
5.4
Heritage New Zealand Archaeological Authority
53
Consultation and Engagement
54
6.1
Introduction
54
6.2
Auckland Council
54
6.3
Network Utility Providers
55
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7
8
9
10
11
6.4
Proximity Buildings
55
6.5
Mana Whenua
56
6.6
Heritage New Zealand
59
6.7
Public Open Days
59
6.8
Others
59
Assessment of Effects on the Environment
60
7.1
Introduction
60
7.2
Positive Effects
60
7.3
Earthworks
61
7.4
Groundwater Drawdown and Diversion
62
7.5
Ground Settlement
69
7.6
Effects on Utilities
75
7.7
Contaminated Land
76
7.8
Water Quality
77
7.9
Industrial and Trade Activities
80
7.10 Works within Flood Hazard Areas and Overland Flow Paths
81
7.11 Air Quality
82
7.12 Historic Heritage
83
7.13 Mana Whenua Values
85
7.14 Summary of Effects
85
Statutory Assessment
87
8.1
Introduction
87
8.2
Resource Management Act 1991
87
8.3
Heritage New Zealand Pouhere Taonga Act 2014
92
8.4
Summary of Statutory Assessment
92
Relevant Planning Documents
93
9.1
Introduction
93
9.2
National Environmental Standard for Assessing and Managing Contaminants in Soil to
Protect Human Health
93
9.3
Auckland Regional Policy Statement
94
9.4
Auckland Regional Plan: Sediment Control
95
9.5
Auckland Regional Plan: Air Land and Water Plan
96
9.6
Proposed Auckland Unitary Plan
100
9.7
Conclusion
107
Proposed Resource Consent Conditions
108
10.1 Proposed Resource Consent Conditions
108
10.2 Requested Resource Consent Terms and Lapse Periods
108
Conclusion
109
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Appendices
Appendix A
Certificates of Title
Appendix B
Design and Construction Report
Appendix C
Groundwater Effects Assessment
Appendix D
Assessment of Settlement Effects
Appendix E
Contaminated Land Assessment
Appendix F
Water Quality Assessment
Appendix G
Industrial and Trade Activities Assessment
Appendix H
Air Quality Assessment
Appendix I
Draft Erosion & Sediment Control Management Plan
Appendix J
Heritage Impact Assessment
Appendix K
City Rail Link Notice of Requirement Built Heritage Technical Expert Report
Appendix L
Stakeholder Correspondence and Minutes
Appendix M
Mana Whenua Correspondence and Minutes
Appendix N
Proposed Resource Consent Conditions
Appendix O
Drawings
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Figures
Figure 1-1 Indicative CRL Alignment Plan.
Figure 1-2 Indicative CRL Alignment Long Section.
Figure 3-1 Britomart Station to Wyndham Street – Plan 1 of 2.
12
13
22
Tables
Table 1-1 Resource Consent Programme.
Table 1-2 CRL Britomart to Wyndham Section Suite of Documents.
Table 3-1 CRL Britomart to Wyndham Street Active Construction Zones.
Table 3-2 Britomart to Wyndham Street Construction Support Areas.
Table 3-3 Active Construction Zones.
Table 3-4 Indicative Construction Programme.
Table 4-1 Historic Heritage Places within 20 m of the Britomart to Wyndham Section Works.
Table 4-2 Mana Whenua Sites and Places of Significance.
Table 5-1 Earthworks and Land Disturbance.
Table 5-2 Groundwater Diversion.
Table 5-3 Groundwater Take and Drilling of Holes and Bores.
Table 5-4 Contaminated Land Discharges from Soil Disturbance.
Table 5-5 Contaminated Land - Ongoing Discharges.
Table 5-6 Discharges to Stormwater.
Table 5-7 Discharges to Stormwater.
Table 5-8 Stormwater Discharges- Industrial or Trade Activities (ITA).
Table 5-9 Flooding.
Table 5-10 Air Discharges – Dust.
Table 5-11 PAUP Information Requirements.
Table 5-12 Disturbing Contaminants in Soil.
3
Table 7-1 Predicted Tunnel Inflows (m /day)
Table 7-2 Buildings Affected by Estimated Settlement Due to the Cut and Cover Excavation.
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19
23
25
26
28
35
36
37
40
41
42
43
44
46
47
48
48
50
52
66
71
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Glossary of Terminology
The following terms have been used throughout the document and are listed below for reference.
Term
Alignment
Chainage
Consolidation
Meaning
The horizontal and vertical position of the pipe or the CRL tunnels.
An imaginary line used to measure distance from a specified starting
point.
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.
Consolidation
settlement
Space deformation induced by consolidation (see ‘consolidation’ above).
Cut and cover tunnel
A form of construction for a box-shaped tunnel where a trench is excavated
within which the tunnel is constructed and then the trench is backfilled and
the surface restored.
Differential
settlement
Difference in settlement between two adjacent locations.
Enabling works
Engineer
Ground anchors
Groundwater
Principal Technical
Adviser
Project criteria
Sensitive structures
Shafts
Spoil
Tunnel boring
machine
Water table
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.
Steel tendons installed in the ground to provide support to ground retaining
structures.
Water located in pore spaces within the soil mass.
The Principal Technical Adviser to Auckland Transport 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.
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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Glossary of Abbreviations and Units
The following abbreviations and units have been used throughout the document and are listed below
for reference.
Acronym
AC
ACDP: CA
ACRP: ALW
ACRP: SC
ACZ
AEE
AMP
ANZECC
AQMA
AQMP
AQNES
ARPS
AT
ATCoP
BaP eq.
CBD
CEMP
CIA
CLA
CoC
CSA
CSMP
CRL
CVA
DCR
DSI
ECBF
ECBF ER
ECBF EU
ECBF EW
ECI
EHS
EMP
ESA
ESCP
GWT
GRP
Ha
HAIL
Heritage NZ
HIA
HNZPT Act
ITA
ITA EMP
m
MfE
mm
M&CP
Meaning
Auckland Council
Auckland Council District Plan Operative Auckland City – Central Area
Section 2005
Auckland Council Regional Plan: Air, Land, Water 2013
Auckland Council Regional Plan: Sediment Control 2001
Active Construction Zone
Assessment of Effects on the Environment
Archaeology Management Plan
Australian and New Zealand Guidelines for Fresh and Marine Water Quality
2000
Air Quality Management Area
Air Quality Management Plan
Air Quality National Environmental Standard
Auckland Regional Policy Statement 1999
Auckland Transport
Auckland Transport Code of Practice
Benzo(a)pyrene equivalent
Central Business District
Construction Environmental Management Plan
Cultural Impact Assessment
Contaminated Land Assessment
Certificate of Compliance
Construction Support Area
Contaminated Soils Management Plan
City Rail Link
Cultural Value Assessment
Design and Construction Report – Britomart to Wyndham Section
Detailed Site Investigation
East Coast Bays Formation
Residual soil/ completely weathered ECBF
Unweathered ECBF
Weathered ECBF
Early Contractor Involvement
Environmentally Hazardous Substances
Environmental Management Plan
Environmental Site Assessment
Erosion and Sediment Control Management Plan
Groundwater Table
Glass-reinforced Plastic
Hectare
Hazardous Activities and Industries List
Heritage New Zealand
Heritage Impact Assessment
Heritage New Zealand Pouhere Taonga Act 2014
Industrial and Trade Activity
Industrial and Trade Activity Environmental Management Plan
Metres
Ministry for the Environment
Millimetres
Monitoring and Contingency Plan
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MVA
NESair
NESsoil
NoR
OMS
PA
PAUP
PPL
PPV
PTA
QE2S
RL
RMA
SCShealth
SMP
TA
TBM
TP90
WDQMP
Maori Value Assessment
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
Orakei Main Sewer
Permitted Activity
Proposed Auckland Unitary Plan 2013
Precinct Properties Limited
Peak Particle Velocity. Peak Particle Velocity (PPV) is the measure of the
vibration amplitude, zero to maximum. Used for building structural damage
assessment.
Principal Technical Adviser
Queen Elizabeth II Square
Reduced Level
Resource Management Act 1991
Soil Contaminant Standards (to Protect Human Health)
Site Management Plan
Tauranga Group
Tunnel Boring Machine
Auckland Council Technical Publication No. 90 - Erosion and Sediment
Control Guidelines for Land Disturbing Activities in the Auckland Region
1999
Water Discharge Quality Monitoring Programme
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1 Introduction
1.1
Purpose of Report
This report (Report) has been prepared to accompany the application by Auckland Transport (AT) to
Auckland Council (AC) for resource consent to authorise the construction of the Britomart Station to
Wyndham Street section of the proposed City Rail Link (CRL), which is referred to throughout this
report as the Britomart to Wyndham section.
AT has confirmed (subject to resolving appeals) the designation of the land required to build and
operate the CRL and is now seeking the remaining resource management authorisations required in
accordance with the Resource Management Act 1991 (RMA). These include a range of resource
consents required by regional plans, and land use consents required by national environmental
standards.
The resource consents required for the CRL are being sought in two separate packages. This report
provides an assessment of effects on the environment (AEE) for Resource Consent Package 1 which
relates to resource consents associated with the construction of tunnel infrastructure for the Britomart
to Wyndham section, inclusive of the section of tunnel running beneath the Downtown Shopping
Centre (DSC). This application excludes resource consents for the operation of the CRL. Resource
Consent Package 2 covers the Aotea Station to North Auckland Line (NAL) section along with the
CRL-wide operational elements. Resource Consent Package 2 will be addressed in a separate
application, to be prepared at a later date.
This AEE has been prepared in accordance with sections 88, 139 and the Fourth Schedule of the
RMA. This report is intended to provide the information necessary for a full understanding of the
proposed works and any actual or potential effects the proposed activities may have on the
environment.
This report contains the following information:

A description of the proposed works (Britomart to Wyndham section) including alternatives that
were considered.

A description of the existing environment in which the Britomart to Wyndham section will be
constructed.



The statutory approvals required (reasons for the application).


An assessment of the proposed works against relevant statutory and non-statutory documents.
Consultation and engagement undertaken.
An assessment of the actual and potential effects of the proposed work on the environment and
identified measures which will be implemented in order to avoid, remedy or mitigate potential
adverse effects.
An overview of the draft resource consent conditions which propose management processes, the
preparation and implementation of management plans and specific measures to mitigate the actual
and potential adverse effects associated with the Britomart to Wyndham section.
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1.2
CRL Overview
The CRL is the key project in an integrated transport programme to keep Auckland moving as the city
grows over the next 30 years. It supports the Auckland Plan target of 69% of trips to the city centre
being by public transport. The underground rail line linking Britomart and the existing western line
near Mt Eden via the city centre will allow a train every five to 10 minutes from most Auckland stations.
The CRL project objectives are as follows:





Improve transport access into and around the city centre for a rapidly growing Auckland.
Improve the efficiency and resilience of the transport network of urban Auckland.
Significantly contribute to lifting and shaping Auckland’s economic growth.
Provide a sustainable transport solution that minimises environmental impacts.
Contribute positively to a liveable, vibrant and safe city.
1.2.1
Horizontal Alignment
The CRL project comprises the construction, operation and maintenance of a 3.4 km underground
passenger railway (including two tracks, two new underground stations, modification of Britomart
Station and substantial redevelopment of the existing Mt Eden Station located within an open trench)
running between Britomart Station and the NAL in the vicinity of the existing Mt Eden Station. These
works include an additional 850 m of track modifications within and adjacent to the NAL. The new
stations included in the CRL have been temporarily named Aotea Station and Karangahape Station.
The redevelopment of the Mt Eden Station is referred to as the Mt Eden extension. The indicative
CRL alignment is depicted in Figure 1-1 below.
Figure 1-1 Indicative CRL Alignment Plan.
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1.2.2
Vertical Alignment
The alignment rises 70 m from the Britomart Station end to the connection at the NAL, taking account
of a range of constraints and parameters. An indicative long section of the CRL alignment is
illustrated in Figure 1-2 below.
Figure 1-2 Indicative CRL Alignment Long Section.
1.2.3
Design and Construction
The wider CRL project design identifies the project footprint and potential configurations required to
support construction and operation of modifications to Britomart Station, two proposed new
underground stations, and the redevelopment of the existing Mt Eden Station.
The principal features of the CRL project are as follows:


Extending underground into Lower Queen Street via existing Platforms 1 and 5 at Britomart Station.


A top-down cut-and-cover station at Aotea.



Deep station with mined platform and access tunnels at Karangahape Road.
Cut-and-cover tunnels between Britomart and Aotea Stations, and south of the cross over shaft at
Eden Terrace.
Driven tunnel using a Tunnel Boring Machine (TBM) between Aotea Station and the cross over
shaft including extending under the CMJ.
A new platform at Mt Eden Station located within the West Facing Connection (open trench).
East and West Facing Connections to the NAL at the southern end of the CRL.
A variety of construction methodologies suitable for different locations along the CRL alignment have
been identified based on the initial site analysis and investigations, topography and identified
engineering risks and constraints.
Refer to Section 3 below for an indicative construction methodology of the Britomart to Wyndham
section.
The programme for construction for the wider CRL project is still subject to confirmation. Refer to
Section 3.12 for an indicative programme of the Resource Consent Package 1 area.
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1.2.4
CRL Operation
Once the CRL project is completed and the railway becomes operational, the railway will require a
range of systems including those related to stormwater, groundwater ingress, wash down water during
cleaning and following a fire event, tunnel ventilation, and tunnel maintenance.
For a more detailed description of the CRL operation refer to Section 10 of the Design and
Construction Report (DCR) prepared by Aurecon New Zealand Limited (Aurecon) attached at
Appendix B.
1.2.5
Anticipated CRL Project Benefits
The wider CRL project benefits were discussed in detail under the previous NoR project phase (refer
to Section 1.8 of the NoR AEE, Beca, 2012). In summary, it is anticipated that once operational, the
CRL will provide or contribute to achieving a range of benefits, which include increased train
movements on the Auckland rail network by developing Britomart as a through station and unlocking
the current capacity constraint. Commuter access to the city centre will be increased, providing the
opportunity to stimulate economic development. Ease of access to the CBD will also be enhanced for
international and domestic tourists.
The CRL will build on the benefits of existing investment committed by Central Government and the
Auckland region to electrification of Auckland’s rail network, including the new electric powered rolling
stock (EMU’s). The CRL will also enable the provision of potential future extensions of the rail network
to the Auckland International Airport and the North Shore. The resilience of Auckland’s infrastructure
will be developed, complimenting investment in Auckland’s strategic road network by freeing up road
space for freight and other trips.
The CRL is predicted to provide a catalyst for inner city re-development by creating new major
transport hubs around the underground rail stations, stimulating land use intensification and
regeneration of central city areas.
The CRL may also assist in meeting the environmental and health objectives, notably air quality
standards, sought by the Regional Policy Statement and the Auckland Council Regional Plan: Air,
Land and Water (ACRP: ALW) and in reducing regional carbon emissions stemming from the transport
system, a key component of climate change.
1.3
Approach to Obtaining Resource Consents
The approach to obtaining the necessary resource consent is based on a staged approach in order to
respond to the CRL design progress (i.e. level of information and design available for certain sections
of the CRL route) and construction programme requirements. AT is progressing the CRL Enabling
1
Works package through a formal Early Contractor Involvement (ECI) contract arrangement via two
ECI contracts. The staged resource consent approach responds to this process and is summarised in
Sections 1.5.1 to 1.5.2 below.
The approach to packaging of the resource consent applications is shown in Table 1-1 below.
Table 1-1 Resource Consent Programme.
Resource Consent Package
Location
1
Britomart Station to Wyndham Street (This Report)
2
Aotea Station to the North Auckland Line
1
CRL tunnel works including those within Britomart Station and across Lower Queen Street; works from Customs Street West/ Albert
Street intersection through to Wyndham Street (including the portion of CRL tunnels through the Downtown Shopping Centre). The
Enabling Works also includes the Albert Street Stormwater Main Realignment which is being consented as a separate project).
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1.3.1
Resource Consent Package 1 – Britomart Station to Wyndham Street
Section
2
Resource Consent Package 1 includes regional consent and land use consent applications
associated with construction of CRL infrastructure for the Britomart to Wyndham section. More
specifically, this stage seeks the resource consents required for the completed, but not operational
CRL tunnels from Britomart Station to Wyndham Street (discussed below).
This stage involves the cut and cover tunnels from Britomart Station to a point just to the south of the
Wyndham Street and Albert Street intersection. The package includes underpinning of the Chief Post
Office (CPO) building, and the section of running tunnels that extends into Queen Elizabeth II Square
(QE2S) and the DSC site (but does not include the re-development of the shopping centre which is
being consented separately by Precinct Properties Limited) and running tunnels across Customs
Street West and along Albert Street to Wyndham Street. Resource Consent Package 1 consists of
five Active Construction Zones (ACZ) and six Construction Support Areas (CSA).
The works associated with Resource Consent Package 1: Britomart Station to Wyndham Street fall
into both Enabling Works Contracts 1 and 2.
This report relates to the CRL project works comprising the Britomart to Wyndham section (Resource
Consent Package 1) only.
1.3.2
Resource Consent Package 2 – Aotea Station to the North Auckland
Line Section
Resource Consent Package 2 will include regional consent and land use consent applications for the
substantive works of CRL from Aotea Station to the North Auckland Line (NAL). This stage covers the
construction of the future Aotea Station via cut and cover means and the tunnels by tunnel boring
machine (TBM) between Aotea Station and the NAL. As well as the construction of Aotea Station via
cut and cover, it includes the construction the Karangahape Station (by mining), key utilities diversions
at the NAL, along with the Mt Eden Station extension and connections to the NAL. Resource Consent
Package 2 will seek the necessary resource consents required for the operation of the entire CRL;
from Britomart Station to the NAL. These include operational water discharges associated with fire
events, washdown activities and general tunnel leakage and air discharges associated with train
operation and tunnel and rail maintenance activities. The CRL project works comprising the Aotea to
NAL section (Resource Consent Package 2) will be subject to a future resource consent application.
2
Land use consent applications are required for works pursuant to the Resource Management (National Environmental Standard for
Assessing and Managing Contaminants in Soil to Protect Human Health) Regulations 2011.
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1.4
Planning Approvals Required
The following resource consents are being sought for the Britomart to Wyndham section and these are
detailed further in Section 5. In addition, AT is seeking certificates of compliance for a range of
activities permitted under the relevant statutory documents.
The approvals for the Britomart to Wyndham section are being sought under the relevant provisions of
the following statutory documents and plans:




Auckland Council Regional Plan: Sediment Control 2001 (ACRP: SC).
Auckland Council Regional Plan: Air, Land, Water 2013 (ACRP: ALW).
Proposed Auckland Unitary Plan 2013 (PAUP).
Resource Management (National Environmental Standard for Assessing and Managing
Contaminants in Soil to Protect Human Health) Regulations 2011 (NESsoil).
1.4.1
Resource Consents
The following resource consents are required for the Britomart to Wyndham section:
 A land use consent for land disturbing activities, including earthworks pursuant to Rule 5.4.3.1
(restricted discretionary activity) of the ACDP: SC is sought.
 A land use consent for earthworks for network utilities and road networks pursuant to Rule 1.1
(restricted discretionary activity) of Chapter H4.2 with activity status pursuant to Rule 2 of
Chapter G2.3 of the PAUP is sought.
 A land use consent for earthworks for network utilities and road networks within the Historic
Heritage Overlay pursuant to Rule 1.2 (discretionary activity) of Chapter H4.2 of the PAUP is
sought.
 A land use consent for earthworks within the 100-year ARI flood plain pursuant to Rule 1.2
(restricted discretionary activity) of Chapter H4.2 of the PAUP is sought.
 A water permit for the temporary and permanent diversion of groundwater pursuant to Rule
6.5.77 (restricted discretionary activity) of the ACRP: ALW is sought.
 A water permit for the temporary and permanent diversion of groundwater pursuant to Activity
Table 1 (restricted discretionary activity) in Chapter H, Section 4.17 of the PAUP is sought.
 A water permit for the taking of groundwater for the purposes of groundwater diversion pursuant
to Rule 6.5.43 (restricted discretionary activity) of the ACRP: ALW is sought.
 A water permit for the taking of groundwater associated with a groundwater diversion pursuant
to Activity Table 1 (restricted discretionary activity) in Chapter H, Section 4.17 of the PAUP is
sought.
 A water permit for the drilling of a hole or bore pursuant to Rule 6.5.26 (controlled activity) of the
ACRP: ALW is sought.
 A water permit for the drilling of a hole or bore pursuant to pursuant to Activity Table 1
(controlled activity) in Chapter H, Section 4.17 of the PAUP is sought.
 A discharge permit for the discharge of contaminants from disturbing soil on land containing
elevated levels of contaminants to land or water pursuant to Rule 5.5.44A (restricted
discretionary activity) of the ACRP: ALW is sought.
 A discharge permit for the discharge of contaminants from disturbance of land not meeting the
controlled activity controls pursuant to Activity Table 1 and Rule 2.3.1 (restricted discretionary
activity) of Chapter H, Section 4.5 of the PAUP.
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 A discharge permit for the discharges of contaminants from land containing elevated levels to
land or water pursuant to Rule 5.5.44A (restricted discretionary activity) of the ACRP: ALW is
sought.
 A discharge permit for discharges from land not meeting the relevant controlled activity controls
pursuant to Activity Table 1 and Rule 2.3.1 (restricted discretionary activity) of Chapter H, Section
4.5 of the PAUP is sought.
 A discharge permit to discharge contaminants to stormwater pursuant to Rule 5.5.68
(discretionary activity) of the ACRP: ALW is sought.
 A discharge permit to discharge wastewater and/or washwater to land or water pursuant to
Activity Table 1 (discretionary activity) of Chapter H, Section 4.18 of the PAUP is sought.
 A discharge permit to discharge to land or water from dewatering pursuant to Activity Table 1
(discretionary activity) of Chapter H, Section 4.18 of the PAUP is sought.
 A discharge permit for the discharges of contaminants to air pursuant to Rule 4.5.56 (restricted
discretionary activity) of the ACRP: ALW is sought.
 A discharge permit for discharge of contaminants to air pursuant to Activity Table 1 and Rule
3.3.5 (restricted discretionary activity) of Chapter H, Section 4.1 of the PAUP is sought.
 A land use consent to disturb soil pursuant to Regulation 11 (discretionary activity) of the NESsoil
is sought.
Overall, resource consent is sought from AC as a Discretionary Activity.
1.4.2
Certificates of Compliance
The following certificates of compliance (CoCs) are also being sought for the Britomart to Wyndham
section:
 A certificate of compliance for discharge of treated sediment laden water from any earthworks
allowed by a resource consent pursuant to Rule 1.1 (permitted activity) of Chapter H4.2 of the
PAUP is sought.
 A certificate of compliance to discharge stormwater from redeveloped existing impervious
surface pursuant to Rule 5.5.1 (permitted activity) of the ACRP: ALW is sought.
 A certificate of compliance to discharge stormwater from redeveloped existing impervious
surface pursuant to Rule 1.2.1 (permitted activity) of Chapter H, Section 4.14 of the PAUP is
sought.
 A certificate of compliance to discharge stormwater from the redevelopment of existing, high
use public roads operated by a road controlling authority with an impervious area less than or
2
equal to 5,000 m pursuant to Table 3.1, Rule 3.2.1 (permitted activity) of Chapter H, Section
4.14 of the PAUP is sought.
 A certificate of compliance to use land for the purposes of Industrial or Trade Activities
pursuant to Rule 5.5.14 (permitted activity) of the ACRP: ALW is sought.
 A certificate of compliance to use land for the purposes of Industrial or Trade Activities- not
listed in Table 3 or listed as low risk in Table 3 pursuant to Activity Table 1 and Rule 2.2.1
(permitted activity) of Chapter H, Section 4.8 of the PAUP is sought.
 A certificate of compliance to install below ground infrastructure within the 1 per cent AEP flood
plain pursuant to Rule 2.1.2 (permitted activity) of Chapter H, Section 4.12 of the PAUP is sought.
 A certificate of compliance for the discharge of contaminants into air pursuant to Rule 4.5.3
(permitted activity) of the ACRP: ALW is sought.
 A certificate of compliance for discharge of contaminants into air pursuant to Activity Table 1
and Rule 1 (permitted activity) of Chapter H, Section 4.1 of the PAUP is sought.
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1.4.3
Information Requirements
The PAUP lists specific information requirements relevant to particular resource consent applications.
The specific requirements under the PAUP that are relevant to this application are:

Cultural Impact Assessment(s) (CIA) for all applications requiring resource consent under the
Sites and Places of Significance to Mana Whenua Overlay and where the proposal may have
adverse effects on Mana Whenua values pursuant to Section 2.7.4 in Chapter G of the PAUP as
identified as required by Mana Whenua.
 As an outcome of various hui (see Section 6.7 below for further description), Mana Whenua
initially indicated that until such time that they could review the resource consent application in
full, the requirement for CIAs could not be confirmed. Mana Whenua have now confirmed their
preference for an independent consultant to review the application on their behalf and to provide
advice with respect to their interests. On 9 December 2014 at the CRL Mana Whenua Forum
(hui) AT confirmed that it would progress the appointment of an independent party to support the
CRL Mana Whenua Forum in reviewing the resource consent applications. Consequently any
identification of effects on Mana Whenua values and associated mitigation measures is unable to
be confirmed at this time.

Heritage Impact Assessment for an application for resource consent for earthworks for network
utilities and road networks within the Historic Heritage Overlay pursuant to Rule 1.2 (discretionary
activity) of Chapter H4.2, requiring the provision of a Heritage Impact Assessment pursuant to
Section 2.7.8 in Chapter G of the PAUP, which is provided in Appendix J.

Heritage Impact Assessment for any discretionary resource consent application on land adjacent
to scheduled historic heritage places pursuant to Rule 2.7.8 in Chapter G, Section 2.7.8 of the
PAUP, which is provided in Appendix K.
1.5
Further Approvals Required
In addition to the authorisations/ approvals sought in this application, further approvals will be required
for the CRL project. In particular, it is noted that AT is not yet seeking the relevant authorisations/
approvals from AC for:


Works and activities in the CPO, Britomart East within the Britomart Transport Centre Designation.

The operation of the CRL pursuant to section 15 (and possibly s14) of the RMA. These approvals
will be sought as part of Resource Consent Package 2 – Aotea to NAL section for the CRL in its
entirety (i.e. the full corridor between Britomart and the NAL). Operational elements for the full CRL
route include operational water discharges associated with fire events, wash down activities and
general groundwater tunnel leakage, and air discharges associated with train operation and tunnel
and rail maintenance activities.
3
Resource consent applications associated with the construction of CRL infrastructure for the
substantive works for the Aotea Station to NAL section as described above (Resource Consent
Package 2).
Such approvals will be required in the future in order to construct and operate the CRL.
1.6
General Archaeological Authority
The following approval under other legislation is being sought for the Britomart to Wyndham section:

Heritage New Zealand Pouhere Taonga Act 2014: application for a general archaeological authority
under s44(a).
3
Including land use consent applications which are required for earthworks, land disturbance activities and works pursuant to the
Resource Management (National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health)
Regulations 2011.
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1.7
Resource Consent Application Suite of Documents
Table 1-2 below sets out the suite of documents that are provided in support of the Britomart to
Wyndham section.
Table 1-2 CRL Britomart to Wyndham Section Suite of Documents.
Volume
Description of Content
Volume I




Assessment
of Effects on
the
Environment
and
Appendices
Assessment of Effects on the Environment
Appendix A: Certificates of Title
Appendix B: Design and Construction Report (Aurecon New Zealand Limited)
Appendix C: Groundwater Effects Assessment (Pattle Delamore Partners Limited)
A-C
(this volume)
Volume II
Appendices


Appendix D: Assessment of Settlement Effects (Aurecon New Zealand Limited)
Appendix E: Contaminated Land Assessment (Golder Associates (NZ) Limited)
D-E
Volume III
Appendices
F- N






Volume IV




Appendix F: Water Quality Assessment (Golder Associates (NZ) Limited)
Appendix G: Industrial and Trade Activities Assessment (Golder Associates (NZ) Limited)
Appendix H: Air Quality Assessment (Golder Associates (NZ) Limited)
Appendix I: Draft Erosion and Sediment Control Management Plan (Aurecon New Zealand
Limited)
Appendix J: Heritage Impact Assessment (Salmond Reed Architects Limited)
Appendix K: City Rail Link Notice of Requirement Built Heritage Technical Expert Report
(Salmond Reed Architects Limited)
Appendix L: Stakeholder Correspondence and Minutes
Appendix M: Mana Whenua Correspondence and Minutes
Appendix N: Proposed Resource Consent Conditions
Appendix O: Drawings
Drawings
Appendix O
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2 Applicant and Property
Details
Applicant Details:
Auckland Transport
Private Bag 92250
Auckland 1142
Site Address:
Britomart Station, Lower Queen Street, Customs Street West, Wolfe Street,
Victoria Street West, Albert Street, Wyndham Street, Auckland Central
Site Address:
12 Queen Street, Auckland Central, Auckland 1010
Legal Description:
Lot 101 DP 323395
Land Owner:
Auckland Council
Site Address:
7 Queen Street, Auckland Central, Auckland 1010
Legal Description:
Lot 4 DP 69547
Land Owner:
Precinct Properties Downtown Limited
Regional Plan:
Auckland Council Regional Plan: Air, Land, Water 2013
Zoning:
N/A
Limitations:
None
Overlays, precincts
and non-statutory
information:
Urban Air Quality Management Area (Map Series 1, Map 30)
Regional Plan:
Auckland Council Regional Plan: Sediment Control 2001
Zoning:
Active Construction Zones A, B and C are inside the Sediment Control
Protection Area (SCPA).
Active Construction Zones D and E are outside the Sediment Control
Protection Area (SCPA).
Limitations:
None
Proposed Plan:
Proposed Auckland Unitary Plan 2013
Zoning:
Business- City Centre
Limitations:
None
Overlays, precincts
and non-statutory
information:
Britomart sub-precinct A, Britomart sub precinct B, Downtown West Precinct
Natural Hazards- Coastal Inundation
High Land Transport Route Noise
Designation 1556 and 1562
Within scheduled site of significance to Mana Whenua, Ngahu Wera, Appendix
4.1, ID: 015
Within 20 m of a scheduled site of significance to Mana Whenua, Nga Wharau
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a Tako, Appendix 4.1, ID: 009
Within the 100-year ARI flood plain
Within the 1 per cent AEP flood plain
Within a scheduled historic heritage place, Chief Post Office, Appendix 9, ID
02021
Within 20 m of scheduled historic heritage places (various)
On land adjacent to scheduled historic heritage places (various)
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3 Project Description
3.1
CRL: Britomart to Wyndham Section
The Britomart to Wyndham section of the CRL project (Resource Consent Package 1) commences at
Britomart Station West and continues west beneath Lower Queen Street before turning south and
passing beneath the DSC, continuing south beneath Albert Street, as far as Wyndham Street. The
Britomart to Wyndham section consists of five distinct ACZs (A to E) which are supported by six CSAs
(1 to 6).
ACZs are the locations where the physical CRL infrastructure is to be constructed. CSA are locations
within the CRL designation, required to support construction activities.
The CSA locations (shown in yellow/ orange) and ACZ (shown in blue) are shown in Figure 3-1 and 32 below. A description of the ACZs A to E is provided in Section 3.2 below and a description of the
CSAs 1 to 6 is provided in Section 3.3 below.
Figure 3-1 Britomart Station to Wyndham Street – Plan 1 of 2.
Note: Britomart Station East has been
omitted from this diagram as it is not
included in this resource consent.
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Figure 3-2 Britomart Station to Wyndham Street – Plan 2 of 2.
A detailed description of the Britomart to Wyndham section is contained within the DCR (Appendix B)
and within the Drawings (contained within Appendix O).
3.2
Active Construction Zones
3.2.1
Introduction
The Britomart to Wyndham Street section of the CRL project consists of five distinct ACZs as identified
in Figure 3-1. An indicative construction methodology for each ACZ is detailed in Section 4 to Section
8 of the DCR (Appendix B). However, Table 3-1 provides a summary of the key characteristics for
each of the ACZs and key information for each ACZ is provided in Sections 3.2.2 to 3.2.7 of this
report. For chainages refer to drawing CRL-BTM-RME-000-DRG-0001 contained within Appendix O.
Table 3-1 CRL Britomart to Wyndham Street Active Construction Zones.
Active construction
zone
Chainage
Trench Dimensions
Length
(m)
Depth
(m)
Width
(m)
Construction
Method
Exposed
Areas
2
(m )
ACZ A – Britomart Station
West
0-95
95
12.5
7.6
Underpinning, cut and
cover bottom up
ACZ B – Lower Queen
Street
ACZ C – Downtown
Shopping Centre
ACZ D – Customs Street
West
ACZ E – Albert Street
95-138
43
14
7.6
Cut and cover bottom up
2,000
138-250
112
13.5
7.6
Open trench
2,000
250-280
30
12
13.7
Cut and cover bottom up
800
280-610
330
17.5
12.7
Cut and cover bottom up
6,000
200
1
Notes: Depth has been approximately calculated as the depth below ground level to the bottom of the physical tunnel.
3.2.2
Active Construction Zone A - Britomart Station (West)
ACZ A - Britomart Station West involves the construction of tunnels and the protection of the CPO
building. Two tunnels (which will ultimately contain a single track each) approximately 95 m in length
will be constructed in ACZ A.
The CRL tunnels in ACZ A are envisaged to be built using a bottom up, cut-and-cover methodology.
They are proposed to consist of a trench formed using cement stabilised columns (ground
improvement) with reinforced concrete piles bored through the improved ground. Involving the
following general sequence, piled walls will be constructed to create a temporary trench, with the
ground then excavated between the walls down to the underside of the tunnel.
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The tunnels will be built within the trench and the trench will be back filled. The trench dimensions are
estimated to be approximately 12.5 m deep and 7.6 m wide. The construction of this trench will allow
the tunnels to be constructed.
ACZ A is supported by CSA 1 and CSA 2.
3.2.3
Active Construction Zone B - Lower Queen Street Tunnels
ACZ B- Lower Queen Street tunnels (ACZ B) involves the construction of tunnels from the CPO
building at Britomart Station to a location west of the existing pedestrian underpass stairs and lift
within QE2S. The actual extent of works is dependent on the timing of the DSC re-development
(discussed further in Section 3.2.4 below).
The tunnels within ACZ B are to be built using a bottom up, cut-and-cover methodology. Two tunnels
(with a single track each) approximately 43 m in length will be constructed in ACZ B. The piles are
proposed to be positioned at the perimeter of the tunnel, creating a trench in which the CRL tunnels
can be constructed. The trench dimensions are estimated to be approximately 12.5 m deep and 7.6 m
wide. The construction of this trench will allow the tunnels to be constructed.
ACZ B will be supported by CSA 2.
3.2.4
Active Construction Zone C - Lower Queen Street Tunnels
ACZ C – Downtown Shopping Centre (ACZ C) involves the construction of tunnels from QE2S to the
south west corner of the DSC site. The actual extent of works is dependent on the timing of the DSC
re-development. The existing DSC will require demolition in order to allow for construction of the CRL
tunnels.
It is important to note that Precinct Properties Limited (PPL) submitted an application for resource
consent for its Downtown Centre development on 12 November 2014. It is understood that this
application relates to regional resource consenting requirements only, including earthworks,
contaminated land management/ discharges, groundwater and associated settlement.
It is understood that the PPL development will involve the construction of a basement up to 17 metres
deep, within the block bounded by Lower Albert, Quay, Queen and Customs Streets. The PPL
basement development has a construction timeframe of 18 to 24 months (likely to be undertaken early
2016 to late 2017).
The application includes the portion of the CRL tunnels that run through the DSC site (within the
proposed basement). Notwithstanding this, AT is also seeking resource consent for the tunnels
through ACZ C, so that the entire length of the CRL route is consented and can be constructed, in the
unlikely event that the PPL project is delayed.
Two tunnels (with a single track each) merging to one tunnel approximately 112 m in length will be
constructed in ACZ C. The tunnels within ACZ C are to be built using a bottom up, cut-and-cover
methodology.
As for ACZ A, construction of piled walls is proposed to create a temporary trench. The walls within
QE2S are likely to be constructed using the same methodology as ACZ A (described above). All other
walls are likely to be constructed using piling with a sprayed concrete (shotcrete) arched infill between
to support the soil. On completion of the piled walls, the CRL tunnels will be built within the trench.
The trench dimensions are estimated to be up to 14 m deep and 7.6 m wide. The tunnels have been
designed to be isolated from the foundations of the new shopping centre re-development.
ACZ C will use CSA 3.
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3.2.5
Active Construction Zone D - Customs Street West
ACZ D – Customs Street West (ACZ D) involves the construction of tunnels across the intersection at
Lower Albert Street and Customs Street West. ACZ D will employ CSA 4 and 5.
One tunnel with two tracks approximately 30 m in length will be constructed in ACZ D. The tunnels
are proposed to be constructed using a bottom up, cut-and-cover method. The piles will be positioned
at the perimeter of the tunnel, creating a trench in which the CRL tunnels can be constructed. The
trench dimensions are estimated to be approximately 13.5 m deep and 13.7 m wide.
The piling methodology and tunnel construction sequence is likely to be similar to ACZ A (described
above). The only difference is excavation is proposed to be undertaken on a face excavation (due to
vertical access constraints) with spoil loaded onto waiting trucks in CSA 4 or 5.
3.2.6
Active Construction Zone E – Albert Street
ACZ E – Albert Street (ACZ E) involves the construction of tunnels between the intersection at Lower
Albert Street and Customs Street West, and Wyndham Street.
One tunnel with two tracks approximately 330 m in length will be constructed in ACZ E. The tunnels
are proposed to be constructed using a bottom up, cut-and-cover method. The piles will be positioned
at the perimeter of the tunnel, creating a trench in which the CRL tunnels can be constructed. The
trench dimensions are estimated to be up to 17.5 m deep and 12.7 m wide.
ACZ E will be supported by CSA 4, 5 and 6.
3.3
Construction Support Areas
The six CSAs support the ACZs and provide the general activities such as site offices, machinery
parking, storage of construction materials, wheel washing areas, and waste storage and collection. A
jet grout pump and mixing plant is also proposed on CSA 2 and CSA 4 and stormwater and
groundwater treatment tanks are proposed on all CSAs except CSA 5 and CSA 6. Provision has been
made for the storage of up to 24m³ of spoil, engineering fill, drainage materials or demolition debris at
all CSAs except CSA 6.
Details on the CSAs are provided in Section 4 to Section 8 of the DCR. Table 3-4 provides a
summary of these areas
Table 3-2 Britomart to Wyndham Street Construction Support Areas.
CSA*
Location of CSA
ACZ
Area
1
Within Britomart Transport Centre Designation
adjacent to Tyler Street and Galway Street
Zone A – Britomart Station West
800 m2
2
Lower Queen Street
Zone B – Lower Queen Street
3
Downtown Shopping Centre and Queen Elizabeth
II Square
Zone C – Downtown Shopping
Centre
4
Eastern side of Lower Albert Street
5
Eastern and southern approaches to the Customs
Street West/Albert Street intersection
6
Southern end of Albert Street
Zone A – Britomart Station West
Zone D – Customs Street West
Zone E – Albert Street
Zone D – Customs Street West
Zone E – Albert Street
Zone E – Albert Street
1,400 m2
5,000 m2
1,200 m2
400 m2
800 m2
*All CSAs are located within the CRL Designation.
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3.4
Earthworks
3
An estimated total of 225,000 m of cut and fill will be undertaken to construct the Britomart to
Wyndham section. The approximate excavation volumes are shown below in Table 3-3. Spoil and fill
material along with construction debris will be removed from the ACZ’s due to limited space
requirements rather than stored onsite. A small amount of onsite storage in the CSAs will be available
as previously described.
Table 3-3 Active Construction Zones.
Active Construction Zone
Earthworks Volume
(Cut)
Earthworks
Volume
(Fill)
Earthworks
Areas
(Exposed)
20,000 m3
12,000 m3
200 m2
18,000 m3
14,000 m3
2,000 m2
20,000 m3
8,000 m3
2,000 m2
5,000 m3
3,000 m3
800 m2
80,000 m3
45,000 m3
6,000 m2
143,000 m3
82,000 m3
11,000 m2
ACZ A – Britomart Station West
ACZ B – Lower Queen Street
ACZ C – Downtown Shopping Centre
ACZ D – Customs Street West
ACZ E – Albert Street
TOTAL
Construction
Method
Underpinning,
cut and cover
(bottom-up)
Cut and cover
(bottom-up)
Open trench
Cut and cover
(bottom-up)
Cut and cover
(bottom-up)
*Depth has been approximately calculated as the depth below ground level to the bottom of the physical tunnel.
3.5
Ground Settlement
Managing any potential adverse ground settlement effects upon existing adjacent buildings, utilities,
roads and infrastructure has been a consideration in the development of the CRL design and
construction methodology.
Potential ground settlement effects caused by mechanical and consolidation settlement adjacent to
the CRL works are addressed in the Assessment of Settlement Effects prepared by Aurecon and
contained in Appendix D.
Monitoring and contingency measures will be implemented by the contractor; comprising a monitoring
plan which includes building and ground movement monitoring and building condition surveys.
Specific monitoring for utilities is proposed only if the predicted settlement levels are exceeded. Roads
will be reinstated post-construction should any settlement effects occur.
3.6
Groundwater Management
The following engineering design elements are proposed to deal with groundwater in all ACZs:

Construction period (temporary case) – piled perimeter wall is proposed to act as a groundwater
cut-off preventing significant ingress into the temporary trench whilst construction of the tunnels is
undertaken.

An additional consideration for groundwater management at ACZ B during construction is the
groundwater flows that make their way under Lower Queen Street. To allow groundwater to flow
during construction, and to avoid potential effects associated with groundwater rise (draw- up), it is
proposed to provide permeable gaps in the southern piled wall.

During construction, when the tunnel within Lower Queen Street is sealed, a dewatering system
(wellpoint system consisting of 10 wells) on the southern side of ACZ C is proposed. The
abstracted groundwater will have no interaction with the CSA, and will be discharged directly to the
closest point in the stormwater system following passage through the water treatment system.
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
Post construction (permanent case) – the design will ensure there is minimal water ingress into the
tunnels. The permanent case will require the installation of a waterproof membrane around the
outer perimeter of each tunnel (base slab, walls and roof).
A groundwater monitoring network will be implemented to monitor groundwater drawdowns in the
vicinity of the CRL works to compare these against the predicted values, supporting monitoring for
potential consolidation settlement.
A Groundwater Effects Assessment has been prepared by Pattle Delamore Partners Limited and is
contained in Appendix C.
3.7
Overland Flow Paths and Flood Plains
An assessment of existing overland flow paths and flood plains based on Auckland Council GIS data
was undertaken for the purpose of the DCR (Appendix B). Further details on overland flow paths and
flood plains are contained in Section 3 of the DCR and in Section 4.1.4.
On completion of construction, ground levels are to be reinstated to their original contours and
therefore, flood plain levels and overland flow paths are likely to be unchanged. However,
management of overland flow paths during the construction period is proposed via bunds or
structures, to ensure any diversion does not adversely affect buildings. The following measures will be
used to manage overland flow during the course of construction:

Lower Queen Street and QE2S– diversion bund to direct overland flow around the ACZs and CSAs
and surrounding buildings.

Customs Street West intersection and DSC – hoardings with a sealed base, installed at the
perimeter of the site to divert overland flow to the road corridor.

Albert Street – diversion of overland flow to locations outside the work site as required.
3.8
Stormwater Management
Stormwater management post construction is not proposed as the Britomart to Wyndham section will
not generate additional stormwater runoff as it does not create any new impervious area, and as such
no treatment (quality or quantity) of surface runoff is proposed on a long-term basis.
Within the CSAs, no excavation work will occur and all stormwater generated is routed to existing
street stormwater system inlets (locations shown on Figure 8 of the Water Quality Assessment
contained in Appendix F). A number of procedural controls are proposed for the CSAs (outlined in
Section 7 below and Section 7 of the ITA Assessment, Appendix G) to minimise the contribution of
contaminants to stormwater leaving the CSAs.
Within the ACZs, stormwater from within the ACZ will combine with groundwater and be treated via
treatment systems consisting of two 12,000 L in-line settlement tanks. Stormwater/groundwater from
ACZ A and B will be pumped to a treatment system located in CSA 2, and stormwater/groundwater
from ACZ C to E will be pumped to a treatment system in CSA 4.
If the quality of the discharge is acceptable, all treated water from the ACZs will discharge to the
stormwater system and into the Waitemata Harbour. If the discharge is unacceptable, it will be treated
further, or collected in water tankers and removed off-site for treatment and discharge. Treatment and
discharge decisions are outlined in the Water Quality Assessment (Appendix F).
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3.9
Contaminated Ground Management
As described in the Contaminated Land Assessment (Appendix E) and Aecom (2012), a number of
sites on the Hazardous Activities and Industries List (HAIL) lie within the Britomart to Wyndham
section. These were areas of reclamation fill within the route footprint between the Britomart Station
(including the station area) and the DSC; and a diesel storage tank in the basement of a building in
Lower Queen Street.
The Contaminated Land Assessment (CLA) did not identify any significant contamination. However, it
recognised that there are limitations due to not being able to access the tunnel route in locations such
as under the DSC. As such, a precautionary approach has been proposed. A Draft Contaminated
Soils Management Plan (CSMP) (Appendix E) has been prepared which recommends that the
earthworks be monitored by a Contaminated Land Specialist (CLS) or other suitably trained personnel.
The Draft CSMP also outlines procedures if unexpected contaminated soils or hazardous material is
encountered during earthworks.
3.10
Reinstatement and Rehabilitation
Construction of the Britomart to Wyndham section within the ACZs will require works to the CPO as a
result of the proposed underpinning and earthworks activities, demolition of the existing pedestrian
underpass beneath Lower Queen Street, and demolition and reinstatement of road pavement at Lower
Queen Street, Customs Street West and Albert Street. Reinstatement of those identified elements will
take place upon completion of tunnel construction, with the exception of the pedestrian underpass
which will not be reinstated.
The CSAs are located within existing roads. As such, the existing asphalt surface is likely to be
retained and used. On completion, the contractor will be required to reinstate the area to its previous
condition.
3.11
Construction Programme
The indicative construction programme for the Britomart to Wyndham section continues to develop as
the design progresses; however, the estimated duration of the wider CRL project is currently five to six
years. Construction of the Britomart to Wyndham section is expected to start in September 2015 and
finish in March 2019.
An indicative programme for the Project is shown in Table 3-2 below.
Table 3-4 Indicative Construction Programme.
Supporting Area
Commencement
Completion
Duration
Zone A – Britomart Station West
September 2015
May 2019
3 years 8 months
Zone B – Lower Queen Street
May 2016
July 2018
2 years 2 months
Zone C – Downtown Shopping Centre*
March 2016
July 2017
1 year 4 months
Zone D – Customs Street West
October 2015
November 2016
1 year 1 month
Zone E – Albert Street
November 2015
May 2018
2 years 6 months
Total Duration
3 years 8 months
*Indicative programme shown is for the CRL tunnels within the DSC and does not include the timeframe to re-develop the
shopping centre above the tunnels once constructed.
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3.12
CRL Operation
Resource Consent Package 1 seeks to authorise the construction of the CRL tunnels from Britomart
Station to Wyndham Street. As the CRL will not become operational until the entire route
infrastructure is constructed, Resource Consent Package 1 will not authorise operational aspects of
CRL, except for interim stormwater related consent requirements.
It is noted that Resource Consent Package 2 will seek all necessary resource consents for the
operation of the CRL, from Britomart Station through to the North Auckland Line (NAL).
No specific ventilation is proposed for the CRL tunnels between Britomart Station and Wyndham
Street as part of this current resource consent package. The tunnel is likely to be closed to prevent
any un-authorised access, treated as a confined space and temporarily ventilated whenever access is
needed.
3.13
Consideration of Alternatives
Under the RMA an assessment of alternative methods and locations is required for all discharges
(section 105) and for any activities likely to have a significant adverse effect (Clause 1(b) of Schedule
4).
While Section 7 of this document concludes that the actual and potential effects associated with the
Britomart to Wyndham section are not significant, this application is seeking permits for the discharges
identified below and therefore an assessment of alternatives is required. The identified discharges
include:

Earthworks and associated discharge.

Discharge of contaminants from disturbing soil on land potentially containing elevated levels of
contaminants to land or water.


Discharge of wastewater.
Potential discharge to air (dust).
The discharges are directly linked to the construction of the Britomart to Wyndham section of the CRL.
The alternatives for the location/ route of the CRL were discussed in the NoR application for the
designation of the land required to build and operate the CRL, and that assessment concluded that
there are no realistic alternative discharge locations.
Given the nature of the discharges, there are considered to be no appropriate alternative discharge
methods, subject to the ‘control’ or ‘treatment’ methods used to actually minimise the discharges which
are discussed in Section 7. Proposed methods include removal of all encountered potentially
contaminated fill material off-site, disposal of fill at a managed fill facility, treatment of sediment laden
water prior to discharge or collection by water tankers for off-site treatment, and management of dust
through measures proposed within the Draft Air Quality Management Plan (AQMP) (Appendix H).
These ‘control’ and ‘treatment’ methods are described in the following paragraphs and considered
further in Section 7.
The CLA has confirmed the presence of fill overlying natural soils beneath the project footprint,
therefore fill material and natural soils will be disturbed during the construction of the Britomart to
Wyndham section. Consideration of leaving the fill material insitu was considered. However the CLA
considered it prudent to remove all encountered fill material off-site, and proposes the disposal of the
fill at a managed fill facility (as appropriate). This will also ensure that contaminated soil does not
contaminate groundwater
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Groundwater, with no contact with sediment or contaminated soil, meets the ANZECC 2000 guidelines
and the permitted activity criteria of the ACRP: ALW and the PAUP (based on sampling undertaken to
date). Therefore, the potential adverse effects on the receiving environment are from groundwater
and stormwater which encounters sediment and contaminated soil, causing sediment laden water to
be discharged to the stormwater system.
There are a number of treatment and discharge options set out in the Water Quality Assessment
(Appendix F). If the quality of the discharge is acceptable, all treated water from the ACZs will
discharge to the stormwater system and into the Waitemata Harbour. If the discharge is
unacceptable, it will be treated further, or collected in water tankers and removed off-site for treatment
and discharge. It is considered that this proposed decision making process will ensure the best
practicable option is met.
The potential for dust effects is likely due to the very close proximity of sensitive activities/ land uses to
potential sources of dust. A Draft AQMP (Appendix H) has been prepared which sets out a detailed
framework for the management, mitigation and monitoring measures to be implemented in the
construction and earthworks activities associated with the Britomart to Wyndham section. It is
considered that framework will ensure the best practicable option is met.
Subject to ensuring the on-going adoption of best practice approaches (as identified above), it is
considered that the proposed control and mitigation of potential discharges to air, groundwater and to
the Waitemata Harbour from the construction of the Britomart to Wyndham section represents the best
practicable alternative.
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4 Existing Environment
4.1
Natural Environment
4.1.1
Geology
The geology of the Britomart to Wyndham section footprint has been established by earlier
4
investigations for the wider CRL project. The general vertical stratigraphic sequence comprises fill
overlying Tauranga Group overlying East Coast Bays Formation (ECBF) within the Waitemata Group.
As the entire length of the route has been modified to various extents, fill materials are present
throughout the route. The most significant of these deposits are present under the waterfront
reclaimed land. A brief description of the stratigraphic units is provided below:

Fill – asphalt or concrete pavement underlain by granular base coarse and/or sub-base. Fill
materials may comprise re-worked natural soils (silts, sands and gravels) or waste materials such
as ash, clinker and demolition rubble.

Auckland Volcanic Field – the Albert Park Volcano, located east of Queen Street is close to the
Britomart to Wyndham section. Investigations to date have not identified ash deposits on or near
Albert Street.


Tauranga Group – alluvial and marine sediments comprising peat, mud, silt, sand and gravel.
ECBF – alternating sandstone and siltstone beds with a completely weathered (residual soil) upper
surface
4.1.2
Topography
The route has a sloping topography, dropping from south to north.
Britomart Station is located at the route’s lowest point, eight meters below sea level. The area from
the CPO Building, west across Lower Queen Street and QE2S is more or less level with a slight rise in
ground level to the west and south beginning as the route traverses the DSC site.
The topography of Albert Street is defined by a gentle sloping gradient that rises from north to south,
with Albert Street located on the edge of the Queen Street valley and near the ridgeline of Hobson
Street. Adjoining streets (such as Swanson Street (east) and Wyndham Street) that run from the east
or west down the valley slopes to Queen Street are relatively steep.
4.1.3
Hydrogeology and Groundwater
The Waitemata aquifer is the dominant hydrogeological unit in the central and southern part of the
Auckland Central Business District (CBD) area5. Key aspects of the hydrogeological model for
Britomart to Wyndham section are:

Localised/perched groundwater heads in unweathered ECBF and weathered ECBF of 1 to 2 m are
recorded. Seasonal groundwater level variations are likely to be about 2 m and responses to
rainfall events can result in a 0.4 m variation. The perched groundwater is not hydraulically
connected to the underlying regional ECBF (lower) groundwater level.

The groundwater level in the Fill, Tauranga Group and ECBF in the reclaimed land area is close to
sea level and groundwater flow is north towards the harbour. The groundwater system in the Fill is
4
City Rail Link Concept Design Geotechnical Interpretative Report (Stage 2) (Aurecon 2013a)
5
Chapter 10, ARC, Auckland Water Resource Quantity Statement 2002 TP171 Surface water and groundwater resource information,
availability and allocation
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complex due to the mixture of materials present and is highly dynamic, being controlled principally
by tidal effects close to the sea and the drainage-recharge influences of the stormwater drainage
system. Together with other service lines (many over a century old and potentially ‘leaky’), the
backfill in these service trenches is considered to form rapid flow conduits for groundwater
movement.

The regional ECBF (lower) groundwater level is approximately 1 m RL near Customs Street and
rises to approximately 5 m RL at Wyndham Street. This regional groundwater level is influenced by
the harbour and topographic valleys to the east and west. Discharge to the existing Albert Street
Stormwater Main (to be realigned in accordance with the separate Albert Street Stormwater Main
Realignment resource consent application that has been lodged by AT) that runs under Albert
Street may also be a factor.

The regional ECBF (lower) groundwater level is likely to have a seasonal variation of up to about 2
m and about a 0.2 m response to rainfall events.

Britomart Station, DSC, Custom Street West and Albert Street are located within the CBD
groundwater catchment which is bounded by Karangahape Road to the south, Waitemata Harbour
to the north, Hobson Street to the west and Princes Street to the east.

The Waitemata Group underlies the entire CBD catchment and drainage patterns from the
Pleistocene period are evident on its surface. The CBD catchment represents a steep sided gully,
occupied by the northerly flowing Wai Horotiu Stream, which follows the Queen Street gully (though
it is now routed through the stormwater drainage system). The conceptual hydrogeological model
for the catchment is discussed in detail by PDP (2000).
In general, groundwater flow directions along the alignment are influenced predominantly by
topography and more locally by structural control (e.g., faulting). The topography, in turn, is influenced
by variations in the ECBF surface elevation, which were defined by drainage patterns (erosion) during
the Pleistocene period.
4.1.4
Flood Hazards
The Britomart to Wyndham section works fall within areas of the 1% AEP flood plain and existing
overland flow paths (based on AC GIS data). According to the PAUP, a floodplain is an ‘area of land
that is inundated by water during a specific flood event’. Overland flow paths and flood plains are
based on an assessment of a 1 in 100 year storm event. Further details on overland flow paths and
flood plains are contained in Section 3 of the DCR.
A major overland flow path with a catchment of 120 ha crosses ACZs A and B, and CSAs 1 and 2. A
second minor overland flow path with a catchment area of 0.2 ha runs through QE2S. At Customs
Street (ACZ D), two overland flow paths merge at the north eastern corner of the intersection. No
flood plains are present at ACZ D - Customs Street West or CSA 5. There are four overland flow
paths identified within the Albert Street (ACZ E) extents.
4.1.5
Air Quality
The area surrounding the Britomart to Wyndham section is a highly modified urban environment, with
medium to high rise buildings at the Britomart Transport Centre, DSC, Customs Street West
intersection with Albert Street and along both sides of Albert Street. At street level there are a range
of retail activities, commercial premises entrances and several hotel frontages. Sensitive receptors in
this area include retail premises, hotels and residential land uses.
Map Series 1 (Map 30) of the ACRP: ALW shows that the Britomart to Wyndham section is located
within the Urban Air Quality Management Area. The Urban Air Quality Management Areas include the
majority of the highly populated areas of the Auckland Region and incorporate residential, commercial,
light industrial and other sensitive land uses.
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The purpose of the Urban Air Quality Management Areas is to ensure a high level of amenity
commensurate with the relevant provisions of the underlying District Plan zones and to protect human
health, particularly for sensitive sectors of the population from the adverse effects of air discharges.
Auckland’s urban areas are the main focus of the PAUP as higher population densities, together with
mixed residential, commercial and industrial land uses and the high numbers of vehicles means there
needs to be a greater focus on both the management of individual discharges from various sources
and the separation of incompatible land uses and activities.
4.2
Physical Environment
4.2.1
Land Use
Auckland’s CBD is a built up urban environment and New Zealand’s largest city centre and
commercial / business area. It is a centre of business, art, culture, entertainment, recreation,
education, tourism and residential living.
Land uses above the ground and adjacent the Britomart to Wyndham section works include high
density commercial and office buildings, residential and visitor accommodation, retail, restaurants and
bars. Commercial offices intermingle with residential and visitor accommodation in the DSC and
QE2S areas through to and along Albert Street. The DSC complex has an existing resource consent
for demolition that is not part of the Britomart to Wyndham section works.
4.2.2
Road Network and Traffic Environment
The proposed route of the Britomart to Wyndham section of works runs from Britomart Station, west
beneath Lower Queen Street and QE2S and beneath the DSC where it curves south and passes
beneath the Customs Street West/ Albert Street intersection before continuing along Albert Street.
Lower Queen Street is closed to general vehicle traffic and is used by buses as part of the Britomart
Transport Centre. It has the status of a pedestrian mall under the Auckland Council District Plan:
Central Area Section (ACDP: CA).
Customs Street West is a District Arterial Road and at the intersection with Albert Street is bounded on
four corners by high density commercial development.
Albert Street is a Regional Arterial Road, bound by high density commercial and residential
development. Albert Street is understood to carry in excess of 13,000 vehicles per day. The works
corridor on Albert Street is located between the intersection of Albert Street and Customs Street West
in the north continuing as far south as Wyndham Street (not including the intersection with Wyndham
Street).
The Britomart to Wyndham section contains a significant public transport corridor, and is a highly
pedestrianised environment.
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4.2.3
Ground Contamination
6
7
The Stage 1 Environmental Site Assessment (ESA) identified the following HAIL sites within the
Britomart to Wyndham section footprint:

Reclaimed foreshore beneath Britomart and QE2S (including beneath the DSC). The reclamation
fill was noted to potentially contain hydrocarbons, metals/metalloids, asbestos, and gas works
waste.


Britomart Station – hydrocarbons and metals/metalloids.
Zurich House (21 Queen Street) – diesel storage tank.
A search of AC property files for the area around Britomart Station, undertaken as part of a CLA
prepared by Golder Associates (NZ) Limited (Golder), included as Appendix E, did not identify any
sites of interest additional to those listed above. The CLA found no exceedances of the permitted
activity criteria of the ACRP: ALW and PAUP, nor any exceedances of the applicable standard with
respect to the commercial / industrial exposure scenario of the NESsoil. Nevertheless, the assessment
was limited in scope and contaminated soils may be present within reclamation fil, and it is considered
prudent to seek resource consent on this basis.
4.2.4
Heritage and Cultural Environment
4.2.4.1
Built Heritage and Scheduled Sites
Proposed activities within the scheduled historic heritage place Chief Post Office (Ref # 02021 PAUP),
which is a site identified on the PAUP Historic Heritage Overlay have been assessed within the
Heritage Impact Assessment (HIA) prepared by Salmond Reed Architects Limited (Appendix J).
In order to describe the existing environment as it relates to built heritage adjacent to the Britomart to
Wyndham section, the Built Heritage Technical Expert Report prepared by Salmond Reed Architects
Limited (Appendix K) prepared under the prior CRL NoR project phase has been relied upon to meet
the historic heritage information requirements under the PAUP.
The proposed Britomart to Wyndham section of works runs through a highly developed urban
environment and passes by and beneath structures of heritage value and importance within the CPO
building (which forms part of the existing Britomart Station) and Albert Street.
The identification and protection of heritage buildings is a shared responsibility between national,
regional and local government acting under different legislation. Under the Heritage New Zealand
Pouhere Taonga Act 2014 (HNZPT Act), Heritage New Zealand (Heritage NZ) maintains the New
Zealand Heritage List/Rārangi Kōrero. Under the RMA, AC schedules historic heritage under the
ACDP: CA and PAUP. The Cultural Heritage Inventory (CHI) is a database of historic places,
buildings and archaeological sites that was maintained by the former Auckland Regional Council (now
AC).
Heritage buildings along the Britomart to Wyndham section route may be either Heritage NZ listed,
identified on the CHI, or scheduled in the ACDP: CA or PAUP or any combination of these.
It is noted that the HIA (attached at Appendix J) has considered only the CPO within which
earthworks activities and underpinning of the building will occur. The consideration of scheduled
historic heritage adjacent to the Britomart to Wyndham route is contained within Built Heritage
6
Auckland City Rail Link - Stage 1 Environmental Site Assessment, Aecom, March 2012.
7
Hazardous Activities and Industries List – a list of sites published by the Ministry for the Environment (MfE) which have the potential to be
contaminated due to the use, storage, manufacture or disposal of hazardous substances.
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Technical Expert Report (Appendix J). It is noted that the PAUP general information requirements
(Part 3, Chapter G, Section 2.7, Rule 2.7.1. and 2.7.8) requires a HIA to be provided for any resource
consent application on land that is adjacent to a scheduled historic heritage place that is identified on
the schedule of historic heritage places and extents. As such it is considered that Built Heritage
Technical Expert Report (Appendix J) meets this requirement.
The following Table 4-1 outlines the scheduled sites under ACDP: CA, PAUP, CHI and Heritage NZ
within the immediate area surrounding the Britomart to Wyndham section route:
Table 4-1 Historic Heritage Places within 20 m of the Britomart to Wyndham Section Works.
Location
Ref No.
Place Name
Protection
Mechanism(s)
Category (if
applicable)
2 Queen Street
4597
Endeans Building
Heritage NZ
2
12 Queen Street
101
Chief Post Office
(Britomart Transport
Centre entrance 2004)
Heritage NZ
1
ACDP: CA
A
PAUP
A
Heritage NZ
1
ACDP: CA
A
PAUP
A
ACDP: CA
B
PAUP
B
CHI
N/A
363
ACDP: CA
B
01924
PAUP
B
117
02021
12-14 Customs Street
West
104
027
Old Customs House
(DFS Galleria 2004)
1946
3 Albert Street
003
West Plaza
1923
13 Albert Street
35 Albert Street
12556
19463
Yates Building
Price Buchanan
Building (Buchanan &
Co)
CHI
N/A
02537
PAUP
B
37‐39 Albert Street
19461
Building
CHI
N/A
30‐34 Swanson Street
19468
Building
CHI
N/A
36 Swanson Street
19462
Building
CHI
N/A
51-53 Albert Street
19486
Dexter & Crozier
CHI
N/A
PAUP
B
CHI
N/A
Heritage NZ
2
004
ACDP: CA
B
01925
PAUP
B
0290
PAUP
B
02557
61 Albert Street
2710
654
Shakespeare Hotel
Brewery
33 Wyndham Street
02474
Commercial building
PAUP
B
9‐11 Durham Lane
2491
Bluestone Store
76‐86 Albert Street
CHI
N/A
2647
Heritage NZ
1
031
ACDP: CA
A
01949
PAUP
A
AC
B
005
Walls, gate, fence,
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Location
83‐85 Albert Street
Ref No.
Place Name
Protection
Mechanism(s)
Category (if
applicable)
01906
lamp and toilets.
PAUP
B
18676
Building
CHI
N/A
ACDP: CA
B
003
4.2.4.2
Maori Cultural Values
The PAUP identifies two scheduled Sites and Places of Significance to Mana Whenua located within
8
the Britomart to Wyndham section extents and in the general vicinity . The sites are summarised in
Table 4-2 below.
Table 4-2 Mana Whenua Sites and Places of Significance.
Location
Ref No.
Name
Description
Albert Street bordering
Customs Street West. A
small portion of Albert
Street southward and
bordering Customs
Street West
PAUP,
Appendix 4.1,
ID: 015
Ngahu Wera
Site of significant event. Exercise of traditional
tribal justice.
Located within the proposed cut and cover tunnel
works in Albert Street.
Albert Street 87-89,
Kingston Street 4,12-14
and 16, and Federal
Street
PAUP,
Appendix 4.1,
ID: 009
Nga Wharau a
Tako
North eastern corner of land bordered by
Kingston Street and Federal Street (one property
only), plus adjacent portion of Federal Street; plus
portion of land enclosed by Kingston Street,
Albert Street, Victoria Street West and Federal
Street; plus Kingston Street between Federal
Street and Albert Street.
Located adjacent to the proposed works in Albert
Street (within 20m).
4.2.5
Utilities
Network Utility Operators include Watercare, Auckland Council Stormwater Assets, Vector Electricity,
Vector Gas, Chorus and Vodafone. The Albert Street stormwater main, running the length of Albert
Street is to be realigned in accordance with the information contained in the resource consent
9
applications and certificates of compliance. The Orakei Main Sewer (OMS) lies to the south of the
proposed Britomart to Wyndham section works, running along Victoria Street. The OMS will not be
affected by the Britomart to Wyndham section works. A further utility present in the vicinity of the
works is the Vector Tunnel. The Vector Tunnel will remain unaffected by the proposed works. A
range of other minor utilities run along and across Albert Street, Custom Street West and Lower
Queen Street.
8
It is noted that these sites are also identified in the ACDP: CA (Planning Overlay Map 6). However, there provisions are not relevant to
these applications.
9
Albert Street Stormwater Main Realignment application numbers: R/LUC/2014/4792; R/REG/2014/4793; R/REG/2014/4794;
R/REG2014/4795; R/REG/2014/4796; R/CER/2014/4797; R/CER/2014/4798; R/CER/2014/4801; R/CER/2014/4802; R/CER/2014/4804;
R/CER/2014/4806; R/CER/2014/4807
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5 Reasons for Application
5.1
Consents Required under Regional Plans
Assessment of the provisions of the following Auckland Council Regional and Unitary Plan documents
has confirmed the required resource consents and certificates of compliance:



Auckland Council Regional Plan: Sediment Control 2001 (ACRP: SC).
Auckland Council Regional Plan: Air, Land and Water 2013 (ACRP: ALW).
Proposed Auckland Unitary Plan 2013 (PAUP).
The following rule assessment tables outline the resource consents and certificates of compliance
sought in accordance with the proposed activities.
5.1.1
Earthworks and Land Disturbance
Certificates of compliance and resource consents are sought as per the rule assessment table below:
Table 5-1 Earthworks and Land Disturbance.
Rule Reference
Rule
Activity Status
Land disturbing
activities
including
earthworks
Land disturbing activities, including earthworks on all soils outside the
Sediment Control Protection Area on an area less than 1.0 ha where
the land has a slope less than 15º.
Permitted
ACRP: SC, Rule
5.4.1.1
Comment
The total area of excavation for the Britomart to Wyndham section
outside the Sediment Control Protection Area, has an exposed
2
earthworks area of 6,800 m (that is, 0.68 ha, which is less than 1.0 ha).
This area is generally comprised of ACZs D and E.
The land where the surface works will be undertaken has a slope less
than 15º.
As outlined in the DCR (Appendix B) and the Draft Erosion and
Sediment Control Management Plan (ESCP) (Appendix I) sediment
and runoff control measures will be undertaken to meet the conditions
of Rule 5.4.1.2.
Note: a CoC is not able to be sought under section 139(8) of the RMA
for this activity.
Land disturbing
activities
including
earthworks
ACRP: SC, Rule
5.4.3.1
Land disturbing activities, including earthworks on all soils within the
Sediment Control Protection Area on an area greater than or equal to
0.25 ha.
Restricted
Discretionary
Comment
The total area of excavation for the Britomart to Wyndham section
within the Sediment Control Protection Area (100m landward of the
coastal marine area, measured from the northern boundary of Quay
2
Street), has an exposed earthworks area of 4,200 m (that is, 0.42 ha,
which is greater than 0.25 ha). This area is generally comprised of
ACZs A, B and C.
Land disturbing
activities
including roading
Land disturbing activities; including roading to reconstruct a road on all
soils other than sand soils within the Sediment Control Protection Area
for a length less than 100 m.
ACRP: SC, Rule
5.4.1.1
Comment
Permitted
Rule 5.4.1.1 provides for land disturbing activities including roading to
reconstruct a road, subject to the conditions in Rule 5.4.1.2 Conditions
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Rule Reference
Rule
Activity Status
for Permitted Activities (Excluding Vegetation Removal).
The length of roading that will be reconstructed within the Sediment
Control Protection Area (Lower Queen Street) will be approximately 35
m (less than 100 m).
Therefore the activity complies with the permitted activity Rule 5.4.1.1.
As outlined in the DCR (Appendix B) and the Draft ESCP (Appendix I)
sediment and runoff control measures will be undertaken to meet the
conditions of Rule 5.4.1.2.
Note: a CoC is not able to be sought under section 139(8) of the RMA
for this activity.
Land disturbing
activities
including roading
ACRP: SC, Rule
5.4.1.1
Land disturbing activities; including roading to reconstruct a road on all
soils other than sand soils outside the Sediment Control Protection Area
on an area greater than or equal to 1.0 ha where the land has a slope
less than 15º.
Permitted
Comment
The area of roading that will be reconstructed will be the total areas of
excavation within the road reserve for the Britomart to Wyndham
2
section works, which is less than 1.0 ha (approximately 6,800 m , that is
0.68 ha) and the road where the surface works will be undertaken has a
slope less than 15º. The area of roading that will be reconstructed is
generally comprised of ACZs Zones D and E.
As outlined in the DCR (Appendix B) and the Draft ESCP (Appendix I)
sediment and runoff control measures will be undertaken to meet the
conditions of Rule 5.4.1.2.
Note: a CoC is not able to be sought under section 139(8) of the RMA
for this activity.
Earthworks and
land disturbance –
network utilities
and road
networks
Earthworks for network utilities and road networks: Earthworks greater
2
3
than 2,500 m or 2,500 m within the Business: City Centre zone and
Road zone (that are outside the strategic transport corridor).
PAUP, Part 3,
Chapter H,
Section 4.2,
The total earthworks volume for the Britomart to Wyndham section of
works include 143,000 m³ of cut and 82,000 m³ of fill.
Activity Table 1,
Rule 1.1
Comment
2
Restricted
Discretionary
(pursuant to
PAUP, Part 3,
Chapter G,
Section 2.3,
Rule 2)
3
Earthworks greater than 2,500 m or 2,500 m for network utilities and
road networks within the Business: City Centre zone and Road zone
are permitted under Rule 1.1 if Conditions 1 to 18 in Rule 2.1.1 can be
met. Conditions 1 to 18 can be met with the exception of Conditions 6
and 10.
Condition 6 requires that, for the activity to be permitted, earthworks
must not alter the configuration of an overland flow path.
CSA 2 lies within an overland flow path (within which earthworks will
occur). During construction the entry and exit points and volume of
water can be maintained, however the velocity and route of flow will be
3
altered. A limited stockpiling volume of 24 m has been allowed for
within CSA 2 which will likely fall within the overland flow path.
Therefore the activity does not comply with Condition 6 of the General
Controls for permitted activities (PAUP, Part 3, Chapter H4.2 Rule
2.1.1). Post-construction the overland flow path will not altered as the
CSAs will be reinstated to the pre-existing levels.
Condition 10 requires that, for the activity to be permitted, earthworks
must be located at least 20m from any scheduled historic heritage place
or scheduled sites and places of significance to Mana Whenua.
Earthworks will be located within the extents of the CPO which is a
scheduled historic heritage place Chief Post Office [Ref # 02021
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Rule Reference
Rule
Activity Status
PAUP], and within 20m of various other scheduled historic heritage
places along the Britomart to Wyndham section route. Earthworks will
also occur both on a scheduled site or place of significance to Mana
Whenua (Ngahu Wera, PAUP Appendix 4.1, ID 015) and within 20m of
a second adjacent site (Nga Wharau a Tako, PAUP, Appendix 4.1, ID:
009). Therefore the activity does not comply with Condition 10 of the
General Controls for permitted activities (PAUP, Part 3, Chapter H4.2
Rule 2.1.1).
The activity status is subject to PAUP, Part 3, Chapter G, Section 2.3,
Rule 2, where a permitted activity that does not comply with one or
more land use or development controls is a restricted discretionary
activity unless otherwise stated in the PAUP.
Therefore, a resource consent is required as a restricted discretionary
activity in accordance with the Activity Table of Chapter H, Section 4.2,
Rule 1.1, and Chapter G, Section 2.3, Rule 2.
Earthworks and
land disturbance –
Treated sediment
laden water
PAUP, Part 3,
Chapter H,
Section 4.2, Rule
1.1
Earthworks and
land disturbance –
Historic Heritage
Overlay
PAUP, Part 3,
Chapter H,
Section 4.2, Rule
1.2
Discharge of treated sediment laden water from any earthworks allowed
by a resource consent, under a regional land use consent in the above
tables (PAUP, Part 3, Chapter H, Section 4.2, Rule 1.1).
Permitted
Comment
As a regional land use consent is being sought for earthworks which are
2
3
greater than 2,500m and 2,500m within the Road zone, the discharge
of treated sediment laden water associated with these earthworks is
permitted.
2
3
Earthworks greater than 2,500 m or 2,500 m for network utilities and
road networks within the Chief Post Office [Ref # 02021 PAUP], a site
identified on the Historic Heritage Overlay.
Discretionary
Comment
The earthworks for the Britomart to Wyndham section includes
earthworks beneath the CPO, which is identified as a scheduled historic
heritage place on the Historic Heritage Overlay. The earthworks
beneath the CPO totals approximately 20,000 m³ of cut and 12,000 m³
of fill. This extent of the earthworks within the CPO is generally
comprised of ACZ A.
2
3
Earthworks and
land disturbance 100-year ARI flood
plain
Earthworks greater than 2,500 m or 2,500 m for network utilities and
road networks in the 100-year ARI flood plain.
PAUP, Part 3,
Chapter H,
Section 4.2, Rule
1.2
Portions of the Britomart to Wyndham section earthworks are located
within the 100-year ARI flood plain.
Restricted
Discretionary
Comment
Therefore, resource consent is required as a restricted discretionary
2
3
activity for earthworks greater than 2,500 m or 2,500 m for network
utilities and road networks in the 100-year ARI flood plain pursuant to
Rule 1.2.
Summary

Land use consents
 A land use consent for land disturbing activities, including earthworks pursuant to Rule 5.4.3.1
(restricted discretionary activity) of the ACDP: SC is sought.
 A land use consent for earthworks for network utilities and road networks pursuant to Rule 1.1
(restricted discretionary activity) of Chapter H4.2 with activity status pursuant to Rule 2 of
Chapter G2.3 of the PAUP is sought.
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 A land use consent for earthworks for network utilities and road networks within the Historic
Heritage Overlay pursuant to Rule 1.2 (discretionary activity) of Chapter H4.2 of the PAUP is
sought.
 A land use consent for earthworks within the 100-year ARI flood plain pursuant to Rule 1.2
(restricted discretionary activity) of Chapter H4.2 of the PAUP is sought.

Certificates of compliance
 A certificate of compliance for discharge of treated sediment laden water from any earthworks
allowed by a resource consent pursuant to Rule 1.1 (permitted activity) of Chapter H4.2 of the
PAUP is sought.
5.1.2
Groundwater Diversion
Resource consents are sought as per the rule assessment table below:
Table 5-2 Groundwater Diversion.
Rule Reference
Rule
Activity Status
Groundwater
diversion
The diversion of groundwater not covered by Rule 6.5.76 is a restricted
discretionary activity.
Restricted
Discretionary
ACRP: ALW, Rule
6.5.77
Comment
Groundwater will be temporarily diverted to enable the excavations
associated with the Britomart to Wyndham section.
Groundwater will also be permanently diverted as a result of the
proposed tunnel in Lower Queen Street. The tunnel with be constructed
with permeable piles and a bottom drainage system (drainage layer
underneath the tunnel).
The diversion of groundwater which cannot meet the conditions of Rule
6.5.76 is a restricted discretionary activity, pursuant to Rule 6.5.77.
The diversion of groundwater as a result of the Britomart to Wyndham
section cannot meet Condition (b) of Rule 6.5.76 as settlement may
result in potential adverse effects on buildings, structures and services.
Therefore, resource consent is required as a restricted discretionary
activity for diversion of groundwater not covered by Rule 6.5.76
pursuant to Rule 6.5.77.
Groundwater
diversion
PAUP, Part 3,
Chapter H,
Section 4.17,
Activity Table 1
Diversion of groundwater - caused by any excavation, and tunnel up to
1m diameter that does not meet the permitted activity controls or is not
otherwise provided for (All Zones).
Restricted
Discretionary
Comment
Groundwater will be temporarily diverted to enable the excavations
associated with the Britomart to Wyndham section.
Groundwater will also be permanently diverted as a result of the
proposed tunnel in Lower Queen Street. The tunnel with be constructed
with permeable piles and a bottom drainage system (drainage layer
underneath the tunnel).
The proposed tunnel excavations will be greater than 1m diameter, and
therefore are “not otherwise provided for”.
Therefore, resource consent is required as a restricted discretionary
activity for the groundwater diversion pursuant to the Activity Table of
Chapter H, Section 4.17.
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Summary

Water permits
 A water permit for the temporary and permanent diversion of groundwater pursuant to Rule
6.5.77 (restricted discretionary activity) of the ACRP: ALW is sought.
 A water permit for the temporary and permanent diversion of groundwater pursuant to Activity
Table 1 (restricted discretionary activity) in Chapter H, Section 4.17 of the PAUP is sought.
5.1.3
Groundwater Take, Drilling of Holes and Bores
Resource consents are sought as per the rule assessment table below:
Table 5-3 Groundwater Take and Drilling of Holes and Bores.
Rule Reference
Rule
Activity Status
Groundwater take
Taking of groundwater for the purposes of groundwater diversion (All
Zones).
Restricted
Discretionary
ACRP: ALW, Rule
6.5.43
Comment
Groundwater take for the purposes of groundwater diversion is
proposed for activities relating to the Britomart to Wyndham excavations
(including predicted quantities for both short term and steady state
regional groundwater takes), perched groundwater, and a dewatering
system (groundwater control system consisting of up to 10 wells) for
groundwater level control within Lower Queen Street.
The taking of groundwater for the purposes of groundwater diversion
under Rule 6.5.77 of the ACRP: ALW is a restricted discretionary
activity pursuant to Rule 6.5.43.
Groundwater take
PAUP, Part 3,
Chapter H,
Section 4.17,
Activity Table 1
Water take and use of groundwater: Dewatering or groundwater level
control associated with a groundwater diversion authorised as a
restricted discretionary activity (All Zones).
Restricted
Discretionary
Comment
Groundwater take for the purposes of groundwater diversion is
proposed for activities relating to the Britomart to Wyndham excavations
(including predicted quantities for both short term and steady state
regional groundwater takes), perched groundwater, and a dewatering
system (groundwater control system consisting of up to 10 wells) for
groundwater level control within Lower Queen Street.
Dewatering and groundwater level control associated with a
groundwater diversion authorised as a restricted discretionary activity
under the Activity Table of Chapter H, Section 4.17 is a restricted
discretionary activity pursuant to the Activity Table of Chapter H,
Section 4.17.
Drilling
ACRP: ALW, Rule
6.5.26
The drilling of a hole or bore that does not comply with Rule 6.5.19(d),
(e), or (f), or Rule 6.5.21(d).
Controlled
Comment
During construction, when the tunnel within Lower Queen Street is
sealed, a dewatering system (wellpoint system consisting of 10 wells) is
proposed. The bores associated with the proposed dewatering system
within the fill and Tauranga Group strata adjacent to the south wall of
the proposed excavation at Lower Queen Street do not comply with
Condition (d) of Rule 6.5.19 which states: The hole shall be
decommissioned within three months of the commencement of drilling;
The proposed dewatering system in Lower Queen Street, consisting of
10 wells, is likely to be required to remain operative during the
construction period which will exceed the 3 month period.
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Rule Reference
Rule
Activity Status
However, the drilling will comply with all of the standards and terms
listed for controlled activities in Rule 6.5.26. Therefore resource
consent is sought as a controlled activity pursuant to Rule 6.5.26.
This drilling enables the restricted discretionary activity groundwater
take discussed above pursuant to Rule 6.5.43.
Drilling holes and
bore
PAUP, Part 3,
Chapter H,
Section 4.17,
Activity Table 1
Controlled
New bores for purposes not otherwise specified (All Zones).
Comment
During construction, when the tunnel within Lower Queen Street is
sealed, a dewatering system (wellpoint system consisting of 10 wells) is
proposed.
Holes for groundwater takes for groundwater level control are not
provided for in the lists of specified permitted activities in the Activity
Table of Chapter H, Section 4.17.
Therefore, the relevant activity listed in the Activity Table is “New bores
for purposes not otherwise specified” which is a controlled activity. .
The activity will comply with all controls for controlled activities listed in
Section 3.2.1. Therefore, resource consent for drilling is sought as a
controlled activity. This drilling enables the restricted discretionary
activity groundwater take discussed above in relation to Activity Table 1
of Chapter H, Section 4.17.
Summary

Water permits
 A water permit for the taking of groundwater for the purposes of groundwater diversion pursuant
to Rule 6.5.43 (restricted discretionary activity) of the ACRP: ALW is sought.
 A water permit for the taking of groundwater associated with a groundwater diversion pursuant
to Activity Table 1 (restricted discretionary activity) in Chapter H, Section 4.17 of the PAUP is
sought.
 A water permit for the drilling of a hole or bore pursuant to Rule 6.5.26 (controlled activity) of the
ACRP: ALW is sought.
 A water permit for the drilling of a hole or bore pursuant to pursuant to Activity Table 1
(controlled activity) in Chapter H, Section 4.17 of the PAUP is sought.
It is noted that any resource consent requirements associated with ongoing groundwater takes
associated with the operation of the CRL infrastructure will be addressed within the future Package 2
resource consent application. This includes the proposed pump station (to be located immediately to
the west of the CPO building) which will manage operational groundwater takes such as ‘tunnel
leakage’.
5.1.4
Contaminated Land Discharges from Soil Disturbance
Resource consents are sought as per the rule assessment table below:
Table 5-4 Contaminated Land Discharges from Soil Disturbance.
Rule Reference
Rule
Activity Status
Contaminated
land discharges
from soil
disturbance
The discharge of contaminants to land or water from land containing
elevated levels of contaminants that does not comply with the standards
and terms Rule 5.5.43 or Rule 5.5.44.
Restricted
Discretionary
ACRP: ALW, Rule
Comment
Rule 5.5.44 gives controlled activity status to discharges from soil
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Rule Reference
Rule
Activity Status
5.5.44A
disturbance provided a Site Investigation Report (in accordance with
Schedule 13 (A3) – Schedules for Reporting on Contaminated Land)
and a Remedial Action Plan is prepared and provided to AC.
While the findings of the SIR (referred to as the CLA, Appendix E)
states the soil contamination has not been identified above permitted
activity criteria, the investigations were limited in scope and there is
potential for contaminated fill to be present within the project footprint.
Therefore, to be prudent, a restricted discretionary activity resource
consent is sought pursuant to Rule 5.5.44A of the ACRP: ALW.
Contaminated
land discharges
from soil
disturbance
Discharges of contaminants from disturbance or remediation of land not
meeting the permitted activity controls.
PAUP Part 3,
Chapter H,
Section 4.5,
Activity Table 1,
Rule 2.3.1
Rule 2.2.2 gives controlled activity status to the discharge of
contaminants from disturbance of or remediation of land not meeting
the permitted activity controls, provided DSI and RAP is prepared and
provided to AC.
Restricted
Discretionary
Comment
The DSI (referred to as the CLA) (Appendix E) states the soil
contamination has not been identified above permitted activity criteria.
However, the investigations were limited in scope and there is potential
for contaminated fill to be present within the project footprint.
Therefore, to be prudent, a restricted discretionary activity resource
consent is sought pursuant to Rule 2.3.1 of the PAUP.
Summary

Discharge permits
 A discharge permit for the discharge of contaminants from disturbing soil on land containing
elevated levels of contaminants to land or water pursuant to Rule 5.5.44A (restricted
discretionary activity) of the ACRP: ALW is sought.
 A discharge permit for the discharge of contaminants from disturbance of land not meeting the
controlled activity controls pursuant to Activity Table 1 and Rule 2.3.1 (restricted discretionary
activity) of Chapter H, Section 4.5 of the PAUP.
5.1.5
Contaminated Land Ongoing Discharges
Discharge permits are sought as per the rule assessment table below:
Table 5-5 Contaminated Land - Ongoing Discharges.
Rule Reference
Rule
Activity Status
Contaminated
land ongoing
discharges
The discharge of contaminants to land or water from land containing
elevated levels of contaminants that does not comply with the standards
and terms Rule 5.5.43 or Rule 5.5.44.
Restricted
Discretionary
ACRP: ALW, Rule
5.5.44A
Comment
Rule 5.5.43 gives controlled activity status to the discharge of
contaminants to land or water from land containing elevated levels of
contaminants provided the terms and conditions can be met, including
(i) which requires a Site Investigation Report (in accordance with
Schedule 13 (A3) – Schedules for Reporting on Contaminated Land) to
be provided to AC.
While the findings of the SIR (referred to as the CLA) states the soil
contamination has not been identified above permitted activity criteria,
the investigations were limited in scope and there is potential for
contaminated fill to be present within the project footprint. Therefore, to
be prudent, a restricted discretionary activity resource consent is sought
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Rule Reference
Rule
Activity Status
pursuant to Rule 5.5.44A of the ACRP: ALW.
Contaminated
land ongoing
discharges
PAUP, Part 3,
Chapter H,
Section 4.5,
Activity Table 1,
Rule 2.3.1
Restricted
Discretionary
Discharges of contaminants from land not meeting the relevant
controlled activity controls.
Comment
Rule 2.2.1 gives controlled activity status to discharges which meet
Conditions 1 to 3. A Detailed Site Investigation (DSI) (referred to as the
CLA) (Appendix E) states the soil contamination has not been
identified above permitted activity criteria. However, the investigations
were limited in scope and there is potential for contaminated fill to be
present within the project footprint. Therefore, to be prudent, a
restricted discretionary activity resource consent is sought pursuant to
Rule 2.3.1 of Chapter H, Section 4.5 of the PAUP.
Summary

Discharge permits
 A discharge permit for the discharges of contaminants from land containing elevated levels to
land or water pursuant to Rule 5.5.44A (restricted discretionary activity) of the ACRP: ALW is
sought.
 A discharge permit for discharges from land not meeting the relevant controlled activity controls
pursuant to Activity Table 1 and Rule 2.3.1 (restricted discretionary activity) of Chapter H, Section
4.5 of the PAUP is sought.
5.1.6
Discharges of Contaminants to Stormwater
Discharge permits are sought as per the rule assessment table below:
Table 5-6 Discharges to Stormwater.
Rule Reference
Rule
Activity Status
Discharges to
stormwater
Any discharge, which is not otherwise provided for in any other rule in
Chapter 5 of the ACRP: ALW
Discretionary
ACRP: ALW, Rule
5.5.68
Comment
Rule 5.5.68 provides discretionary activity status to discharges which
cannot meet the conditions of Rule 5.5.55.
Condition d) of Rule 5.5.55 requires that the discharge does not give
rise, in the receiving water body, to any or all of the following:
“(i) the production of any conspicuous oil or grease films, scum, foams,
of floatable or suspended material.
(ii) any conspicuous change in the colour or visual clarity.
(iii) a change in the natural pH of more than 1 pH unit.
(iv) any significant adverse effect on aquatic life.”
As outlined in the Water Quality Assessment (Appendix F), It is
considered that the procedural controls detailed in the draft EMP
(contained within Appendix F) as well as the use of catchpit protection
will protect the quality of stormwater discharged from these areas.
Furthermore, the discharge water quality monitoring of the treated water
discharge from the treatment system located in CSA 2 and CSA 4 will
be designed to achieve the conditions of Rule 5.5.55.
However, given the uncertainties in the discharge quality in relation to
potential ground contamination, it is considered prudent to apply for a
discretionary activity resource consent pursuant to Rule 5.5.68 of the
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Rule Reference
Rule
Activity Status
ACRP: ALW.
Discharges to
stormwater
PAUP, Part 3,
Chapter H,
Section 4.18,
Activity Table 1
The discharge of water or wastewater not otherwise authorised by a
rule in the Unitary Plan
Discretionary
Comment
The Activity Table provides for the: “concrete/asphalt laying for
reworking and other road construction’, ‘drilling – excluding bore
development and testing’, ‘ washing vehicles, plant or machinery’ and
‘construction, installation, maintenance, alteration, removal or upgrading
of any component of the stormwater or wastewater network that does
not border, span or otherwise extend over any water body’ and ‘dust
suppression’ as permitted activities provided the general controls set
out in Rule 2.1.1 can be met.
Condition 1 of Rule 2.1.1 states that discharge must not, after
reasonable mixing, give rise to:
“a. the production of any conspicuous oil or grease film, scum or foam,
or floatable or suspended materials; or
b. any conspicuous change in the colour or visual clarity; or
c. any emission of objectionable odour; or
d. the rendering of freshwater unsuitable for consumption by farm
animals; or
e. a change the natural temperature of the receiving water by more than
3 degrees C; or
f. a change in the natural pH of the water by more than 1pH unit.”
Condition 2 of Rule 2.1.1 states that:
“The contaminant discharged must not either by itself or in combination
with other contaminants after reasonable mixing exceed the greater of
the 95 per cent trigger values for freshwater (groundwater) specified in
the Australian and New Zealand Guidelines for Fresh and Marine Water
Quality 2000, or the natural background level.”
As outlined in the Water Quality Assessment (Appendix F), It is
considered that the procedural controls detailed in the draft EMP
(contained within Appendix F) as well as the use of catchpit protection
will protect the quality of stormwater discharged from these areas.
Furthermore, the discharge water quality monitoring of the treated water
discharge from the treatment system located in CSA 2 and CSA 4 will
be designed to achieve the conditions of Rule 2.1.1
However, given the uncertainties in the discharge quality in relation to
potential ground contamination, it is considered prudent to apply for a
discretionary activity resource consent under Activity Table 1 of Section
4.18 of the PAUP.
Discharges to
stormwater
PAUP, Part 3,
Chapter H,
Section 4.18,
Activity Table 1
Discharges for the purpose of dewatering trenches or other excavations
Discretionary
Comment
The Activity Table provides for the: “Discharges for the purpose of
dewatering trenches or other excavations” as permitted activities,
subject to the permitted activity conditions of Rule 2.1.5.
Condition 2 refers back to Condition 1 of Rule 2.1.1 and Condition 3
requires that:
“The discharge must meet all other relevant permitted activity controls
of the Unitary Plan, including those relating to land disturbance and
contaminated land.”
As outlined in the Water Quality Assessment (Appendix F), given the
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Rule
Activity Status
uncertainties in the discharge quality in relation to potential ground
contamination, it is considered prudent to apply for a discretionary
activity resource consent under Activity Table 1 of Section 4.18 of the
PAUP.
Summary

Discharge permits:
 A discharge permit to discharge contaminants to stormwater ppursuant to Rule 5.5.68
(discretionary activity) of the ACRP: ALW is sought.
 A discharge permit to discharge wastewater and/or washwater to land or water pursuant to
Activity Table 1 (discretionary activity) of Chapter H, Section 4.18 of the PAUP is sought.
 A discharge permit to discharge to land or water from dewatering pursuant to Activity Table 1
(discretionary activity) of Chapter H, Section 4.18 of the PAUP is sought.
5.1.7
Discharges of Stormwater from Impervious Surfaces
Certificates of compliance are sought as per the rule assessment table below:
Table 5-7 Discharges to Stormwater.
Rule Reference
Rule
Activity Status
Discharges of
stormwater
The diversion and discharge of stormwater either inside or outside
Urban Areas is a Permitted Activity if it arises from impervious areas
existing at the date of notification of this plan (23 October 2001) and it
complies with all of conditions (a), (aa), (b), (c), (d) and (e).
Permitted
ACRP: ALW, Rule
5.5.1
Comment
There are no proposed new impervious surfaces as part of the
construction works associated with the Britomart to Wyndham section.
Instead, the works will involve the removal and replacement of
impervious surfaces within each ACZ. Therefore, Rule 5.5.1 is relevant.
The assessment provided in Section 6 of the Water Quality Assessment
(Appendix F) states that the activity will be able to comply with all of
the conditions of Rule 5.5.1.
Discharges to
stormwater
PAUP, Part 3,
Chapter H,
Section 4.14,
Activity Table 1.1,
Rule 1.2.1,
Permitted Activity
General Controls:
Diversion and discharge of stormwater to land, water or the CMA
including the diversion of surface water from impervious areas existing
at the date of notification of the Unitary Plan.
Permitted
Comment
There are no proposed new impervious surfaces as part of the
construction works associated with the Britomart to Wyndham section.
Instead, the works will involve the removal and replacement of
impervious surfaces within each ACZ. Therefore Rule 1.2.1 is relevant.
The assessment provided in Section 6 of the Water Quality Assessment
(Appendix F) states that the activity will be able to comply with all of
the conditions of Section 1.2.1 Permitted Activity Controls.
Stormwater
Managementquality
New, and redevelopment of existing, high use public roads operated by
a road controlling authority: Impervious area less than or equal to 5000
2
m.
PAUP, Part 3,
Chapter H,
Section 4.14,
Activity Table 3.1,
Rule 3.2.1
Permitted Activity
Comment.
Permitted
High use public roads are defined in the PAUP as roads carrying more
than 5,000 vehicles per day. As described in Section 6.6.3, vehicle
flows on Albert Street are above this limit. However, the impervious
area of Albert Street that will be redeveloped as part of the Britomart to
2
Wyndham section is less than 5,000 m , therefore it is a permitted
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Rule
Activity Status
General Controls:
activity under Table 3.1, Rule 3.2.1 of Rule Section 4.14 Rule 3.2.1.3 of
the PAUP.
The assessment provided in Section 6 of the Water Quality Assessment
(Appendix F) states that the activity will be able to comply with all of
the conditions of Section 3.2.1 Permitted Activity Controls.
Summary

Certificates of compliance
 A certificate of compliance to discharge stormwater from redeveloped existing impervious
surface pursuant to Rule 5.5.1 (permitted activity) of the ACRP: ALW is sought.
 A certificate of compliance to discharge stormwater from redeveloped existing impervious
surface pursuant to Rule 1.2.1 (permitted activity) of Chapter H, Section 4.14 of the PAUP is
sought.
 A certificate of compliance to discharge stormwater from the redevelopment of existing, high
use public roads operated by a road controlling authority with an impervious area less than or
2
equal to 5,000 m pursuant to Table 3.1, Rule 3.2.1 (permitted activity) of Chapter H, Section
4.14 of the PAUP is sought.
5.1.8
Stormwater Discharges – Industrial or Trade Activities
Certificates of compliance are sought as per the rule assessment table below:
Table 5-8 Stormwater Discharges- Industrial or Trade Activities (ITA).
Rule Reference
Rule
Activity
Status
Stormwater
Discharges –
Industrial or Trade
Activities
The use of land for the purposes of Industrial or Trade Activities.
Permitted
ACRP: ALW, Rule
5.5.14
Comment
Six CSAs will be required to support construction activities for the
Britomart to Wyndham section. The activities proposed to be
undertaken in the six construction support areas are not listed in
Schedule 3 of the ACRP: ALW. However, they will include provision for
the storage of materials, and environmentally hazardous substances, as
well as refuelling facilities.
Rule 5.5.14 (a) to (h) applies to unlisted ITAs and gives permitted
activity status provided Conditions (a) to (j) can be met.
As outlined in the Industrial and Trade Activities Assessment
(Appendix G), all conditions of Rule 5.5.14 will be achieved through
procedural controls, as detailed in the attached Draft ITA Environmental
Management Plan (ITA EMP) (contained within Appendix G)
Stormwater
Discharges –
Industrial or Trade
Activities
The use of land for the purposes of Industrial or Trade Activities- not
listed in Table 3 or listed as low risk in Table 3.
PAUP, Part 3,
Chapter H,
Section 4.8,
Activity Table 1,
Rule 2.1.1,
Permitted Activity
Controls
The ITA related activities to be undertaken in the construction support
areas for the project are not listed in Section 4.8.4 (Table 3) of the
PAUP.
Permitted
Comment
Rule 5.5.14 (a) to (h) applies to unlisted ITAs and gives permitted
activity status provided Conditions 1 to 8 can be met.
As outlined in the Industrial and Trade Activities Assessment
(Appendix G), all conditions of Rule 2.1.1 will be achieved through
procedural controls, as detailed in the attached Draft ITA EMP
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Rule Reference
Rule
Activity
Status
(contained within Appendix G)
Summary

Certificates of compliance
 A certificate of compliance to use land for the purposes of Industrial or Trade Activities
pursuant to Rule 5.5.14 (permitted activity) of the ACRP: ALW is sought.
 A certificate of compliance to use land for the purposes of Industrial or Trade Activities- not
listed in Table 3 or listed as low risk in Table 3 pursuant to Activity Table 1 and Rule 2.2.1
(permitted activity) of Chapter H, Section 4.8 of the PAUP is sought.
5.1.9
Flooding
A certificate of compliance is sought as per the rule assessment table below:
Table 5-9 Flooding.
Rule Reference
Rule
Activity Status
Flooding
Below ground infrastructure (located) within the 1 per cent AEP flood
plain.
Permitted
PAUP, Part 3,
Chapter H,
Section 4.12,
Activity Table 1,
Rule 2.1.2
Comment
The permitted activity controls in Rule 2.1.2 can be complied with. Of
relevance to the Britomart to Wyndham section is Condition 5:
‘Stormwater management devices and flood mitigation works must be
are designed, constructed, operated and maintained in accordance with
any structure plan, network discharge consent and vesting
requirements.’
Summary

Certificate of compliance
 A certificate of compliance to install below ground infrastructure within the 1 per cent AEP flood
plain pursuant to Rule 2.1.2 (permitted activity) of Chapter H, Section 4.12 of the PAUP is sought.
5.1.10
Air Discharges
Discharge permits and certificates of compliance are sought as per the rule assessment table below:
Table 5-10 Air Discharges – Dust.
Rule Reference
Rule
Activity
Status
Air discharges
The discharge of contaminants into air created by motor vehicle,
aircraft, train, vessel and lawnmower engines, including those located
on industrial or trade premises is a permitted activity.
Permitted
ACRP: ALW, Rule
4.5.3
Comment
Permits the discharge of combustion emission from vehicles and
machinery operating during the construction of the Britomart to
Wyndham section, and changes in traffic resulting from the
construction.
Air discharges
ACRP: ALW, Rule
The discharge of contaminants into air from earthworks or from the
construction, maintenance and repair of roads (road works) that does
not comply with Rule 4.5.49
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Restricted
Discretionary
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Rule Reference
Rule
Activity
Status
4.5.56
Comment
The discharge of contaminants to air from earthworks or from the
construction and repair of roads (road works) is a permitted activity
under Rule 4.5.49, subject to conditions (a) to (c)
(a) That beyond the boundary of the premises where the activity is
being undertaken there shall be no noxious, dangerous, offensive or
objectionable odour, dust, particulate, smoke or ash; and
(b) That there shall be no noxious, dangerous, offensive or
objectionable visible emissions; and
(c) That beyond the boundary of the premises where the activity is
being undertaken there shall be no discharge into air of hazardous air
pollutants that does, or is likely to, cause adverse effects on human
health, ecosystems or property.
A range of measures will be employed to minimise the discharge of
dust. AT intends to achieve compliance with Conditions (a) to (c) of
Rule 4.5.1. However, because of the very close proximity and the high
sensitivity of the receiving environment, combined with the high
consequence of uncontrolled dust, it is considered prudent to apply
Rule 4.5.56 and seek restricted discretionary activity resource consent.
Air discharges
PAUP, Part 3,
Chapter H,
Section 4.1,
Activity Table 1,
Rule 1
Air discharges
PAUP, Part 3,
Chapter H,
Section 4.1,
Activity Table 1,
Rule 3.3.5
Discharges to air from motor vehicles, aircraft, trains, vessels (including
boats) and mobile sources not otherwise specified (such as
lawnmowers), including those on industrial or trade premises (excluding
tunnels) (permitted controls do not apply).
Permitted
Comment
Permits the discharge of combustion emission from vehicles and
machinery operating during the construction of the Britomart to
Wyndham section, and changes in traffic resulting from the
construction.
The discharge of contaminants to air from earthworks and the
construction, maintenance and repair of public roads and railways not
meeting the general permitted activity controls.
Restricted
Discretionary
Comment
The discharge of contaminants to air from earthworks or from the
construction and repair of roads (road works) is a permitted activity
provided it meets the General Controls in Rule 3.1.1:
1.
2.
3.
4.
The discharge must not contain contaminants that cause, or
are likely to cause, adverse effects on human health, property
or the environment beyond the boundary of the premises
where the activity takes place.
The discharge must not cause noxious, dangerous, offensive
or objectionable odour, dust, particulate, smoke or ash beyond
the boundary of the premises where the activity takes place.
There must be no, dangerous, offensive or objectionable
visible emissions.
There must be no spray drift or overspray beyond the
boundary of the premises where the activity takes place.
A range of measures will be employed to minimise the discharge of
dust. AT intends to achieve compliance with Conditions (1) to (4) of
Rule 3.1.1. However, because of the very close proximity and the high
sensitivity of the receiving environment, combined with the high
consequence of uncontrolled dust, it is considered prudent to apply
Rule 3.3.5 and seek restricted discretionary activity resource consent.
Air discharges
Discharges to air from tunnels up to 220 m long that are used for motor
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Rule Reference
Rule
Activity
Status
PAUP, Part 3,
Chapter H,
Section 4.1,
Activity Table 1,
Rule 1
vehicles or other mobile sources (permitted controls do not apply).
Comment
Tunnels used motor vehicles or for mobile sources where the tunnel is
less than 220 m long is a permitted activity. However this rule does not
relate to the construction of the tunnel and is therefore not relevant for
this application. It is noted that this rule may be relevant to the
operational phase of the tunnel and such approvals will be sought in a
separate application.
Summary

Discharge permits
 A discharge permit for the discharge of contaminants to air pursuant to Rule 4.5.56 (restricted
discretionary activity) of the ACRP: ALW is sought.
 A discharge permit for discharge of contaminants to air pursuant to Activity Table 1 and Rule
3.3.5 (restricted discretionary activity) of Chapter H, Section 4.1 of the PAUP is sought.

Certificates of compliance
 A certificate of compliance for the discharge of contaminants into air pursuant to Rule 4.5.3
(permitted activity) of the ACRP: ALW is sought.
 A certificate of compliance for discharge of contaminants into air pursuant to Activity Table 1
and Rule 1 (permitted activity) of Chapter H, Section 4.1 of the PAUP is sought.
5.1.11
PAUP Information Requirements
Under the PAUP, applications for resource consent are required to consider whether a Cultural Impact
Assessment (CIA) is to be provided. Engagement with relevant Mana Whenua groups has been
undertaken and is ongoing, which is described in further detail below in Section 6.
In addition, a Heritage Impact Assessment is required for any discretionary or non-complying resource
consent applications on land or affecting water adjacent to a scheduled historic heritage place.
Information requirements under the PAUP include:
Table 5-11 PAUP Information Requirements.
Information
Requirement
Reference
Information Requirement
Comment
Cultural Impact Assessment
PAUP Part 3,
Chapter G,
Section 2.7, Rule
2.7.4 Cultural
impact
assessment
1. A cultural impact assessment will be required for all
applications requiring a resource consent under:
a. the Sites and Places of Significance to Mana Whenua
overlay
4. A cultural impact assessment will be required for the
following resource consent applications where the proposal
may have adverse effects on Mana Whenua values:
a. discharges to water or the CMA
b. discharges to air
c. discharge to land
d. diversion, taking or using of surface water, ground water,
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Cultural Impact
Assessment(s) may be
required from Mana Whenua
for all applications requiring
resource consent under the
Sites and Places of
Significance to Mana
Whenua overlay and where
the proposal may have
adverse effects on Mana
Whenua values under the
PAUP.
The proposal involves the
construction of significant
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Information
Requirement
Reference
Information Requirement
Comment
coastal water or geothermal resources
infrastructure that will result
in construction earthworks;
groundwater diversion and
take; discharge of
contaminants (various);
earthworks both within a
scheduled Site and Place of
Significance to Mana
Whenua and within 20m of a
second scheduled site.
l. construction of significant infrastructure
p. Applications that require integration of mātauranga and
tikanga
Heritage Impact Assessment – Adjacent to Historic Heritage Places
PAUP Part 3,
Chapter G,
Section 2.7, Rule
2.7.1. General
information
requirements
Information requirements for resource consent and
subdivision consent applications adjacent to scheduled
historic heritage places
2.The following information must be provided, to the council
as part of any application for the following:
a. a heritage impact assessment for any discretionary or
non-complying resource consent or subdivision consent
application on land or affecting water adjacent to a
scheduled historic heritage place
b. a cultural impact assessment for any restricted
discretionary, discretionary or non-complying resource
consent application on land or affecting water adjacent to a
scheduled historic heritage place where it is archaeology of
Maori origin.
PAUP Part 3,
Chapter G,
Section 2.7, Rule
2.7.8 Historic
heritage
3. Any application for resource consent on land or affecting
water that is adjacent to a scheduled historic heritage place
must include a heritage impact assessment.
A Heritage Impact
Assessment (HIA) is
required for any
discretionary or noncomplying resource consent
application on land or
affecting water adjacent to a
scheduled historic heritage
place.
For the works within the
CRL NoRs, including the
Britomart to Wyndham
section, it has been
confirmed by the Major
Infrastructure Projects Team
(refer to Appendix L) that
this information requirement
has been met through the
Built Heritage Assessment
prepared under the prior
NoR phase of the CRL
project.
A HIA is required for any
resource consent application
on land adjacent to a
scheduled historic heritage
place.
For the works within the
CRL NoRs, including the
Britomart to Wyndham
section, it has been
confirmed by the Major
Infrastructure Projects Team
(refer to Appendix L) that
this information requirement
has been met through the
Built Heritage Assessment
prepared under the prior
NoR phase of the CRL
project.
Heritage Impact Assessment – Scheduled Historic Heritage Place
PAUP Part 3,
Chapter G,
Section 2.7, Rule
2.7.8 Historic
Heritage Impact Assessment
1. An application for resource consent or subdivision
consent for a scheduled historic heritage place must be
accompanied by a heritage impact assessment
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An HIA has been included in
Appendix J. This assesses
the potential effects of the
proposed Britomart to
Wyndham section works,
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Information
Requirement
Reference
Information Requirement
heritage
Comment
within the scope of these
resource consent
applications, to the CPO
building which is a
scheduled historic heritage
place.
and
PAUP Part 3,
Chapter J, Section
2.5, Special
Information
Requirements,
Rule 1 Heritage
Impact
Assessment
Summary

Information requirements
 Cultural Impact Assessment(s) for all applications requiring resource consent under the Sites
and Places of Significance to Mana Whenua Overlay and where the proposal may have adverse
effects on Mana Whenua values pursuant to Rule 2.7.4 in Chapter G, Section 2.7 of the PAUP as
identified as required by Mana Whenua. See Section 6.7 (below) for the status of this
requirement at the time of lodging this application.
 Heritage Impact Assessment for an application for resource consent for a scheduled historic
heritage place pursuant to Rule 2.7.8 in Chapter G, Section 2.7.8 and Rule 1 Heritage Impact
Assessment in Chapter J, Section 2.5 of the PAUP is provided in Appendix J.
5.2
Consents Required Under a National Environmental
Standard
The Resource Management (National Environmental Standard for Assessing and Managing
Contaminants in Soil to Protect Human Health Regulations 2011 (NESsoil) apply as disturbing soil is
covered by sub-clause 5(4) of the NESsoil and the site is included as item H on the HAIL List. It is
therefore necessary to assess the proposed works against the relevant standards of the NESsoil.
Resource consent is sought as per the rule assessment presented in Table 5-13 below:
Table 5-12 Disturbing Contaminants in Soil.
Rule Reference
Rule
Activity
Status
Disturbing
contaminants in
soil
Disturbing Soil.
Discretionary
NESsoil,
The proposed soil disturbance does not meet the permitted activity
criteria of Regulation 8(3), as the volume of soil disturbance exceeds 25
3
2
m per 500 m and the volume of soil to be removed from site will
3
2
exceed 5m per 500m .
Regulation 11
Comment
Regulation 9 gives controlled activity status to soil disturbance provided
Conditions 1(a) to 1(d) are met. Although the CLA (Appendix E)
concluded that laboratory analysis of soil samples has returned results
below the NESsoil for commercial/industrial outdoor worker unpaved
exposure scenario, the assessment was limited in scope and
contaminated soils above the NES SCShealth may be present within
reclamation fill. Therefore, it cannot be said with assurance that the soil
contamination does not exceed the applicable standard in Regulation 7.
Regulation 10 gives restricted discretionary activity status to soil
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Rule Reference
Rule
Activity
Status
disturbance provided Conditions 1(a) to 1(d) are met. For the same
reasons stated above, it cannot be said with assurance that the soil
contamination does exceed the applicable standard in Regulation 7.
Therefore, a discretionary activity resource consent is sought under
Regulation 11 of the NESsoil.
Summary

Land use consent
 A land use consent to disturb soil pursuant to Regulation 11 (discretionary activity) of the NESsoil
is sought.
5.3
Resource Management Act 1991 Assessment
Overall, resource consent is sought from AC as a Discretionary Activity.
For the avoidance of doubt, AT is seeking resource consent under the above rules and any other rules
which may apply to the activity, even if not specifically noted.
5.4
Heritage New Zealand Archaeological Authority
In addition to any requirements under the RMA 1991, the Heritage New Zealand Pouhere Taonga Act
2014 (HNZPT Act) protects all archaeological sites whether recorded or not, and they may not be
damaged or destroyed unless an authority to modify an archaeological site has been issued by the
Heritage New Zealand (Heritage NZ). Authorities to modify archaeological sites can be applied for
under section 44(a) of the HNZPT Act.
Potential effects on archaeology and RMA approvals requirements were assessed under the prior
10
NoR phase of the CRL project. In addition, AT is also applying for an authority under section 44(a)
of the HNZPT Act to cover the proposed Package 1 works. This will ensure that if any archaeological
evidence is unearthed, appropriate protocols are in place and delays to the Britomart to Wyndham
section will be minimised. The authority will be sought from Heritage NZ concurrently with the
resource consents being sought from AC.
10
City Rail Link Project: Archaeological Assessment (City Rail Link Notice of Requirement Assessment of Effects on the Environment, Volume
3, Appendix 3, 2012).
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6 Consultation and
Engagement
6.1
Introduction
Consultation and engagement activities with respect to the Britomart to Wyndham section has been
undertaken/ or are underway with AC (various divisions/ units), AT (internal stakeholders), network
utility providers, Heritage NZ, targeted proximity buildings, and Mana Whenua groups
6.2
Auckland Council
6.2.1
Major Infrastructure Project Team
AT has held a series of workshops, meetings and pre-lodgement communications with members of
AC’s Major Infrastructure Projects team to discuss the Britomart to Wyndham section. Key
interactions were held in March, May and October 2014 (targeted environmental specialist and
planning workshops relating to the wider CRL project). Specialists from the Natural Resources and
Specialist Input Unit attended both the May and October workshops and on-going engagement
between AC/ AT technical specialists has occurred over the course of the year.
Regular fortnightly co-ordination meetings have also progressed throughout 2014 with members of the
AC Major Infrastructure Projects team and other supporting sections of AC as required in order to
keep AC up to date with progress on planning and engineering matters, along with the overall
programme.
6.2.2
Built Heritage Implementation
A meeting with the Built Heritage Implementation Unit (and Heritage NZ) was held on 4 December
2014 to discuss the Britomart design and associated heritage implications. Matters discussed
included the specific works required to the CPO and the nature of the existing Britomart designation.
6.2.3
Local Boards
A range of engagement and consultation has been undertaken with AC local boards, including:

All boards were briefed individually between February and June 2012 except one or two that
declined.


All boards were invited to one integrated briefing on 11 August 2014.
Advisory emails have been regularly sent out to all local boards. In 2014 theses dates included 26
February, 5 March, 15 April, 31 July, 20 August, 15 October on issues including:
 The NoR decision.
 AT's confirmation of the designation.
 Start of the property acquisition process.
 Letters sent to landowners.
 The Mt Eden Station design change announcement.
 Open days.
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In addition, the following targeted Local Board briefings have been held:



Hibiscus and Bays Local Board - August 2012 and July 2013.

Albert-Eden Local Board - July 2012, August 2014 and September 2014.
Devonport-Takapuna Local Board - September 2012.
Waitematā Local Board - December 2012, February 2013, July 2013, August 2013, July 2014 and
August 2014.
6.3
Network Utility Providers
A range of network utility providers are likely to be affected by the Britomart to Wyndham section
works to varying degrees. These providers include:








Watercare Services Limited.
Vector Electricity.
Vector Gas.
Chorus.
Vodafone.
Vector Communications.
Kordia.
CityLink.
Engagement with these network utility providers has been ongoing. In principle, these parties have
expressed no concern regarding the Britomart to Wyndham section works subject to their operational
requirements being met. Meeting minutes from consultation and engagement to date are attached as
Appendix L to this report. Consultation and engagement will be ongoing in order to confirm an
appropriate approach to protection and operational requirements. A range of options are available
including supporting utilities in their existing location or diversions if deemed necessary.
6.4
Proximity Buildings
It is noted that the CRL alignment passes close to several buildings. Assessment of the effects of
settlement has confirmed a number of buildings of interest. These proximity buildings/ land uses
include (north to south):








12 Queen Street – CPO.
21 Queen Street - Zurich House.
23-29 Albert Street - ANZ Centre.
12-26 Swanson Street - Affco House Carpark.
35 Albert Street - Price Buchanan Building.
37 Albert Street.
39 Albert Street.
46-50 Albert Street - APN NZ Complex.
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








52-56 Albert Street - APN NZ Complex.
41 Albert Street - Prince Albert Apartments.
51-53 Albert Street.
55 Albert Street.
57 Albert Street.
61 Albert Street - Shakespeare Hotel Brewery.
58 Albert Street - APN NZ Complex.
38 Wyndham Street - Wyndham Towers.
63 Albert Street - AMI House.
Engagement with owners of the above buildings is proposed and yet to commence. Any feedback will
be supplied to AC as appropriate.
6.5
Mana Whenua
6.5.1
Background
Through the CRL Mana Whenua Forum (a requirement of the CRL designation conditions), AT has
briefed and engaged with those Mana Whenua groups who, at the time of the CRL Notice of
Requirement (NoR) process, expressed an interest in being involved in the CRL project. The eight
Mana Whenua groups who self-identified their interest in the CRL project and therefore the Britomart
to Wyndham section include:








Ngāti Maru.
Ngāti Paoa.
Ngāi Tai Ki Tāmaki.
Ngāti Te Ata Waiohua.
Ngāti Whātua o Ōrākei.
Te Akitai Waiohua.
Te Kawerau a Maki.
Ngāti Tamaoho.
Cultural Values Assessment
Māori Values Assessments (MVA) were commissioned by AT directly from the above Mana Whenua
for the CRL NoR process. A Cultural Values Assessment (CVA) was also commissioned by AT to
support the NoR process. It considered the information and recommendations contained within the
MVA. The CVA represents an independent review of information relevant to consideration of Māori
values and interests in the CRL project area, including the Britomart to Wyndham section; and
provides recommendations on measures to avoid, remedy or mitigate any adverse effects on Māori
values, or measures to recognise and provide for the relationship of iwi/ hapū with their ancestral
lands and tāonga.
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Process Considerations
Following ongoing discussion with AC’s Major Infrastructure Projects team, it was agreed that the five
additional Mana Whenua groups not listed above, but who do have a registered interest regarding all
resource consenting activities within the Waitematā Local Board area, would be written to in relation to
all ongoing resource consenting activities associated with the wider CRL project.
This was on the basis that the PAUP contains policy that provides guidance around the requirements
for Cultural Impact Assessments (CIA) where Sites and Places of Significance to Mana Whenua or
Sites and Places of Value to Mana Whenua are potentially impacted or where applications are
required for discharges to air, land or water, water takes and diversions and land disturbance.
The five additional Mana Whenua groups written to were:





Te Rūnanga o Ngāti Whātua;
Ngāti Whātua o Kaipara;
Ngāti Whanaunga;
Ngāti Tamaterā; and
Te Patukirikiri.
AT sent letters (the form of which were agreed to by AC) to the above Mana Whenua groups on 25
August 2014. These letters outlined upcoming resource consent requirements for and associated with
the CRL project, and requirements under the PAUP (the requirement to engage with Mana Whenua
groups who have identified themselves as having an interest in a particular Local Board area to
determine whether a CIA is required for a resource consent application that potentially impacts on
matters of importance to Mana Whenua). The letters also requested that the five Mana Whenua
groups confirm whether a CIA was required from them for the specified regional consenting
requirements or whether they wished to continue deferring their interest to the eight iwi groups who
make up the CRL Mana Whenua Forum. A copy of this letter is attached at Appendix M.
Of the five Mana Whenua groups written to, two responses were received. Responses were received
from Te Rūnanga o Ngāti Whātua and Ngāti Tamaterā. Both groups deferred their interest to other
groups already sitting on the CRL Mana Whenua Forum. The responses received are attached at
Appendix M. The remaining three groups did not respond. It is assumed that for all remaining
resource consenting process for and associated with CRL that these groups are not required to be
specifically engaged with under the requirement of the PAUP provisions.
6.5.2
Engagement with Mana Whenua on the CRL Project
Targeted engagement with the CRL Mana Whenua Forum has included:

CRL Mana Whenua Forum (hui), 7 August 2014
AT presented the overall resource consenting strategy.

CRL Mana Whenua Forum (hui), 11 September 2014
AT presented the requirements for CIAs, as prescribed by the PAUP, and requested that Mana
Whenua consider an approach to confirming the need for a CIA or not. Mana Whenua indicated
they required further information on each resource consent application associated with the CRL
project.

Targeted Mana Whenua Resource Consents Workshop, 2 October 2014
A targeted workshop was set up to discuss in detail resource consent requirements, the outcomes
of environmental investigations to date, and to further understand key Mana Whenua concerns with
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respect to the Britomart to Wyndham section. AT’s technical experts provided an overview of the
approach to, and outcomes of, investigations to date (air quality, contamination, stormwater,
groundwater etc.). Members of AC’s stormwater unit also attended and provided a useful overview
of some of the strategic work the stormwater unit is looking at, which has a central city catchmentwide focus. Again, the need for an approach to CIAs was discussed. Mana Whenua indicated at
this workshop that they would like an update at the following hui with respect to some specific
matters (in particular stormwater) and how their values were being taken into account with respect
to the wider CRL project. Representatives of the CRL Mana Whenua Forum also indicated that
they would like to discuss the types of mitigation and conditions they would like to see imposed (e.g.
Kaitiaki monitor etc.)

CRL Mana Whenua Forum (hui), 9 October 2014
AT provided an overview of the various work streams that Mana Whenua were contributing to on
the CRL project (design, resource consents and sustainability). The objective was to provide a level
of confidence to Mana Whenua that their values were being taken forward across a range of
spectrums and that there were a range of opportunities in which they were able to provide valuable
input. The Forum indicated that it was unable to confirm whether CIAs for each of the resource
consent applications associated with the CRL project would be required until such time as they
were able review the resource consent applications in full.

CRL Mana Whenua Forum (hui), 6 November 2014
AT updated the mana whenua forum on the status of the application and programme. Mana
Whenua reconfirmed their desire that they wished to review the resource consent application in full
in order for them to understand the implications of the Britomart to Wyndham section and future
resource consent applications on their cultural values; to ensure that appropriate mitigation was
built-in and to offer appropriate conditions for AT consideration. It was confirmed that AT would
“Dropbox” the application in its entirety once available and the above matters would be discussed at
the subsequent hui following lodgement (date to be confirmed).

CRL Mana Whenua Forum (hui), 3 December 2014
AT provided a further update to the CRL Mana Whenua Forum on the status of the Britomart to
Wyndham section application. The CRL Mana Whenua Forum requested that AT consider
commissioning an independent party to represent the CRL Mana Whenua Forum and prepare the
necessary review of a given resource consent application.

CRL Mana Whenua Forum (hui), 9 December 2014
AT provided a full briefing on the Britomart to Wyndham section application and confirmed that it
would progress the appointment of an independent party to support the CRL Mana Whenua Forum
in reviewing resource consent applications made for the CRL project. It was again confirmed that
AT would “Dropbox” the application in its entirety once available (and following lodgement).
6.5.3
Summary
AT has been unable to confirm whether CIAs are required for the Britomart to Wyndham section at the
time of lodgement because the CRL Mana Whenua Forum has confirmed that it wishes to view the
application in full prior to confirming the need for a CIA or otherwise. While the MVA and CVA
documents developed for the CRL NoR process provide a broad understanding of the cultural values
Mana Whenua hold, it is recognised that they do not provide a formal assessment of these values in
respect of this proposal.
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6.6
Heritage New Zealand
A meeting was held with Heritage New Zealand (Heritage NZ) on 24 September 2014 where the
requirement for authorities for the CRL project including the Britomart to Wyndham section was
discussed. An overview of the CRL project construction phases and resource consent staging was
provided. The potential staging of authorities was discussed. It was agreed that it was appropriate to
stage authorities in line with resource consent staging. The wider CRL project team, as part of earlier
phases of the CRL project, have previously engaged with Heritage NZ during 2012 and 2013 with
respect to potential works to the CPO building and potentially affected buildings under the NoR phase.
The CRL project team is currently embarking on a more detailed process around design options for
the CPO. A meeting with Heritage NZ (and AC Built Heritage Implementation Unit) was held on 4
December 2014 to discuss the Britomart design and associated heritage implications. Specific
matters discussed included the works required to the CPO and the nature of the existing Britomart
designation.
6.7
Public Open Days
Public Open Days were held on 27 August 2014 (Pitt Street Methodist Church), 30 August 2014
(Mahatma Ghandi Centre, New North Road) and 1 September 2014 (Auckland Town Hall). The public
open days provided an overall update on the CRL project. Approximately 280 people attended the
three public open days.
6.8
Others
Aside from Public Open Days, local residents, businesses and transport users will be consulted well in
advance of commencement of works. A communications plan will be prepared in accordance with the
CRL NoR Designation Conditions to ensure residents, businesses and transport users are informed of
the works on matters relating to the programme and potential construction effects.
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7 Assessment of Effects on
the Environment
7.1
Introduction
Pursuant to section 88 of the RMA, an application for resource consent shall include an assessment of
any actual or potential effects that the activity may have on the environment and an outline of the
proposed measures to avoid, remedy or mitigate any actual or potential adverse effects on the
environment.
When considering an application for resource consent, the RMA (under section 104(1)(a)) requires a
consent authority (in this case AC) to have regard to any actual and potential effects on the
environment of allowing the activity.
As discussed in Section 3.2.4, PPL has lodged an application for regional resource consents for the
DSC site. While the PPL resource consent application and its associated technical reports have
considered the actual and potential effects of the DSC project (including the CRL tunnels within the
basement structure), it has not considered the combined (or cumulative) effects of the DSC
development alongside the wider Britomart to Wyndham section, the construction of which is proposed
to begin at a similar time (early 2016).
The key effects that need to be considered from a cumulative effects perspective are considered to be
those related to groundwater and associated settlement effects. The AT application for the Britomart
to Wyndham section and its associated technical reports have considered the potential cumulative
effects and these are reported on at Sections 7.4 and 7.5 respectively.
7.2
Positive Effects
The potential positive effects associated with the matters addressed in these resource consent
applications include:

Potential for a degree of improvement to stormwater quality due to the reinstatement of Albert
Street.

Improvements to water quality associated with the potential reductions in the number of private
motor vehicles within the inner city due to the provision of CRL as an alternative transportation
mode.

Air quality improvements associated with the potential reductions in the number of private motor
vehicles within the inner city due to the provision of CRL as an alternative transportation mode.

Removal of some contaminated soil from the city and further information about the material in the
reclamation area, particularly in the vicinity of Britomart which may potentially assist future projects
in the area.
The broader CRL project benefits and positive effects for the Auckland region were addressed in detail
during the NoR phase. Potential positive effects from the CRL project (reproduced from Section 7.1 of
the NoR AEE) include:

Realising the potential of the existing infrastructure and the unlocking of the Auckland rail network
through Britomart becoming a through station rather than a terminus station;

Ability for people to better access the city centre area by train through the provision of the stations
proposed along the CRL between Britomart and the NAL;

Increases in rail patronage;
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
Promoting and supporting intensification of land uses around stations, a key proponent of the
Auckland Plan and CCMP [City Centre Masterplan 2012];


Increasing the resilience of the Auckland rail network;
Assists in providing a sustainable transport system and in reducing greenhouse gases.
7.3
Earthworks
Earthworks associated with the Britomart to Wyndham section can be split into excavation associated
with underpinning of the CPO, and cut and cover tunnel works within the five ACZs, including:
Britomart Station West, and cut and cover tunnels within the Lower Queen Street, Downtown
Shopping Centre (open trench), Customs Street and Albert Street ACZ areas and the removal of spoil
material associated with the excavation activity. In addition six CSAs are proposed to support
construction activities.
The earthworks cut volumes associated with the five ACZs areas of excavation will result in
2
approximately 143,000 m³ of excavated material and a total of 11,000 m exposed earthworks areas in
order to construct the tunnels. Reinstatement works will result in approximately 82,000 m³ of
earthworks fill material.
While the exposed earthworks will generally be confined to the excavations themselves with direct
disposal of the majority of spoil off-site, any sediment generating activities can be controlled within the
excavation areas with protection measures in and around the ACZs and CSAs. Without these
measures the earthworks have the potential to result in soil mobilisation and discharges to the
stormwater system.
A Draft ESCP has been provided in Appendix I based on measures proposed in the DCR (refer to
Appendix B). This Draft ESCP will be further developed by the contractor based on the detailed
Britomart to Wyndham section design and construction methodology and submitted to AC for
verification and implemented by the contractor during construction. This will form part of the wider
Construction Environmental Management Plan (CEMP) framework which is recommended as part of
the Britomart to Wyndham section. All erosion and sediment controls will be in accordance with TP90.
The recommended erosion and sediment control measures are specified in the DCR (refer to
Appendix B) and the Draft ESCP (Appendix I). In summary, the proposed measures include:

Ensuring hoarding lines are installed with solid barriers at the base of the hoarding with a
waterproof seal to existing pavements to divert clean water away from the worksite to existing
catchpits.

Ensuring all catchpits within and in the vicinity of the works site shall be protected by inlet protection
in accordance with TP90.

Ensuring all surface and ground water flows shall be collected within localised sumps within the
excavation area and pumped to a settlement tank within the CSAs prior to discharge.

Ensuring all surface site runoff within the construction yard areas shall generally be collected
against hoarding lines and directed to suitably protect existing catchpits. Where flows cannot be
collected prior to discharge from the site filter socks or similar shall be put in place to ensure flows
are collected and treated prior to discharge from site.

Stabilisation of bare soil surfaces with hardfill as soon as practicable once excavation has reached
the required depth.

Loading of excavated material straight onto trucks within the excavation, where possible. If spoil/ fill
or demolition debris is to be stored on site, place within a bunded area using filter socks or a similar
alternative. Stockpiles will not be located in an area where runoff cannot be controlled.
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
Ensuring a water cart is onsite to wet down stockpiles and/or pavement areas to prevent dust
movement.

Avoiding work in heavy rain. In the event of an unforeseen heavy rainfall erosion and sediment
control measures will be and checked after periods of heavy rainfall and upgraded or modified
where necessary.

Ensuring that where vehicular access to the open cut section of the works is provided, wash down
areas and facilities at the base of the ramps discharge to a settlement area to ensure vehicles
leaving open cut ACZs and CSAs are “clean”.

Provision for stabilised entry/exit points. The majority of access points shall be impervious
stabilised areas (asphalt) however where bare earth is exposed suitable stabilisation shall be
provided.

Road sweeping will be carried out along the adjacent streets where trucks leave the site to ensure
that no residual material is left behind which may be hazardous to traffic and pedestrians. The
Contractor will be required to submit a road sweeping plan as part of the earthworks management
plan in advance of commencing works on site.
Further specific mitigation measures are recommended for each ACZ and associated CSAs.
Subject to the development of a detailed ESCP in accordance with the erosion and sediment control
measures outlined in the DCR (Appendix B) and Draft ESCP (Appendix I) and through the
implementation of proposed conditions (refer to Section 10 and Appendix N), it is considered that the
actual and/ or potential effects associated with erosion, soil mobilisation, sedimentation to receiving
water bodies and stormwater discharges will be temporary in duration and will be appropriately
avoided or mitigated
7.4
Groundwater Drawdown and Diversion
A Groundwater Effects Assessment (Appendix C) has been prepared by Pattle Delamore Partners
Limited to assess potential effects on groundwater from the construction of the Britomart to Wyndham
section.
Excavation works have the potential to affect groundwater as a result of inflows (diversions) into the
excavations, dewatering, and groundwater level rise (draw-up) in Lower Queen Street.
The numerical groundwater model developed for Britomart Station in 2000 was refined and extended
to assess the potential effects of the proposed excavations for the wider Britomart to Wyndham
section (ACZs A to E) on regional (continuous) groundwater levels, inflow and groundwater level rise
for the various construction phases under steady state conditions (average long-term recharge and
groundwater level conditions).
The numerical groundwater model was not used to simulate the potential drawdown effects in perched
groundwater zones because of their irregularity and limited extent. The analysis of this aspect of the
groundwater assessment has been carried out using a simplified analytical method, taking into
consideration case studies of the recorded drawdown effects from other basement excavations in the
area.
The relevant geological units have been classified into hydrogeological units for the purposes of
modelling groundwater flow through them according to their hydraulic properties:

Unit 1 incorporates both the Fill and upper Tauranga Group (UTG - littoral or marine, TL). Both
comprise unconsolidated sediments with high silty sand content and share similar hydraulic
properties.

Unit 2 combines lower Tauranga Group (LTG – Pleistocene, TA) with the highly weathered ECBF,
including “ER” (residual and highly weathered ECBF) and “EU” (moderately weathered to
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unweathered ECBF). The justification for this is provided by the predominantly clay and stiff silt
composition of both these units, whereas the UTG contains a greater proportion of sand. A higher
permeability zone within this unit, similar to Unit 1, was detected along a channel below the CPO
and is incorporated in the model.

Unit 3 represents the unweathered ECBF (EU) with its distinctive and well-characterised lithological
and hydraulic conductivity properties.
7.4.1
Drawdown and Diversion Effects on Regional Groundwater
The potential temporary construction related and permanent drawdown and diversion effects of the
Britomart to Wyndham section (ACZs A to E) on regional groundwater levels, and predicted inflow into
the ACZs for various construction scenarios (construction phases) under both steady state conditions
and maximum short term inflows (dependent on construction methodology selected by the contractor)
have been assessed.
In order to assess the potential effects of the various construction phases and long term/ permanent
tunnel configurations on groundwater, various model scenarios were developed. The models and
their assessment outcomes are described below:

M1. Pre-CRL construction model (to provide a reference of existing groundwater levels to assess
potential groundwater drawdowns or rises/ draw-ups)

M2. Sealed CPO without Britomart to Wyndham section
 For this construction scenario the CPO walls are assumed to be sealed.
 The sealed CPO causes a predicted 0.3 m rise in groundwater levels south of the CPO. The
groundwater level in this area is approximately RL1.0 m. Therefore the predicted maximum rise
adjacent to the CPO walls is unlikely to cause any basement flooding or groundwater breakout.

M3. Permeable CPO walls with CPO excavation at RL -8.5 m prior to the construction of the tunnel
in Lower Queen Street
 For this construction scenario it is assumed that the CPO walls are not fully sealed; allowing
some groundwater through flow which is subsequently pumped out. The permeability of the walls
was reduced gradually in order to achieve drawdowns in Unit 1.
 To achieve drawdowns similar to those measured during the prior Britomart Station construction,
-7
the CPO walls require permeability of about 1 x 10 m/s with a wall thickness of 1 m.
 The predicted drawdown at Unit 1 for the above scenario was about 0.6 m (close to the recorded
0.5 m drawdown during the prior Britomart Station excavation). The length of the walls within the
ECBF has no significant effect on the predictions.
 The maximum predicted drawdowns in Unit 1 next to the southern and northern CPO walls were
0.7 m and 1 m respectively.
 The predicted, steady-state groundwater inflow to the CPO excavation is about 35m /day.
3
 Depending on construction methodology, short term inflows of up to 210 m /day could occur i.e.,
during the first few days of dewatering. Short term inflow rate estimates are based on PDP
experience from other projects (up to six times the long term inflow rates), and have not been
numerically modelled for this project.
3
 Overall, the model results of the excavation of the CPO inside retaining walls with a permeability
-7
of about 1 x 10 m/s will not result in potential drawdowns in Unit 1 which exceed those
previously observed during the prior Britomart Station excavation.

M4. Tunnel is completed through Lower Queen Street with permeable (and permanent) piles and
bottom drainage system with sealed CPO
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 This construction scenario represents the long-term/ permanent tunnel configuration in Lower
Queen Street.
 This scenario encompasses permeable piles with 0.5 m diameter placed around the tunnel (ACZ
B). The piles were simulated using cells with high permeability values (0.01 m/s). These piles are
assumed to be connected to a drainage layer underneath the tunnel at –RL 8.5 m which utilises
gravity to mitigate potential groundwater damming effects of the tunnel structure physically
impeding the flow of groundwater across Lower Queen Street. The spacing between the
permeable piles was adjusted until the draw-up south of the tunnel at Lower Queen Street was
less than 0.3 m. The simulation indicates that the required spacing between the piles needs to be
about 2.5 m to prevent the groundwater rise of more than 0.3 m at Lower Queen Street.
 The predicted, steady state groundwater inflow through the piles is about 7 m /d. This forms the
permanent groundwater diversion post-construction.
3
 Depending on construction methodology, short term inflows of up to 42 m /day inflow could occur
i.e., during the first few days of dewatering.
3
 The model results have predicted that the proposed permeable piles and drainage layer
underneath the tunnels will prevent any potential groundwater flooding effects as a result of the
tunnel configuration.

M5. Permeable tunnel walls with excavation at RL -8.5 m (Lower Queen Street) to RL 4 m
(Wyndham Street)
 For this scenario, which assesses temporary construction related groundwater drawdowns it is
conservatively assumed that the excavation of the Britomart to Wyndham section of the cut and
cover tunnels in ACZs B to E will be carried out simultaneously down to the specified levels. It is
also assumed that this occurs after sealing the CPO building (ACZ A). The permeability of the
-7
sheet piles for this scenario is assumed to be 5 x 10 m/s. The excavation levels for the tunnel
between CPO and DSC extends to RL -8.5 m and between DSC and Wyndham Street the base
of tunnel ranges from RL -5 m to RL 4 m.
 A maximum drawdown of about 1 m was predicted for the base of Unit 1 to the south of the
tunnel at the south-western corner of the DSC. The drawdowns for the base of Unit 1 increase in
a westerly direction towards this localised area where Unit 1 pinches out and the tunnel
alignment curves to the south. The reduced transmissivity near the Unit 1 boundary and the
configuration of the underdrainage effects in Unit 3 create lateral flow in Unit 1 in this area giving
rise to the sharper localised drawdown response in Unit 1. Elsewhere, in Unit 1 drawdown
responses are relatively subdued.
 Unit 2 significantly inhibits the upwards transmission of drawdown effects from Unit 3 (where
large drawdowns occur) into the overlying Units 1 and 2. Due to its low hydraulic conductivity,
Unit 2 reduces the upwards spread of drawdowns that would otherwise be in the order of 7 m in
Units 1 and 2. The buffering effect of Unit 2 on drawdowns was confirmed during the prior
excavation of the Britomart Station.
 During construction the total, steady state groundwater inflow into the drained tunnel is estimated
3
at 50 m /day.
 Depending on construction methodology, short term inflows of up to a maximum of 300 m /day
inflow could occur i.e., during the first few days of dewatering.
3
 South of Customs Street along Albert Street the tunnel is largely in ground that is above the level
of the regional groundwater level. The base of the tunnel is roughly coincident with the top of Unit
3 and the regional groundwater level. Hence, along Albert Street the tunnel is largely within the
perched groundwater system within Units 1 and 2. The tunnel drawdown effects on the perched
zones along Albert Street are discussed separately below in Section 7.4.3.
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Damming Effects on Regional Groundwater

M6. Britomart to Wyndham section of the tunnel is sealed (post construction without mitigation)
 For this scenario it is assumed the tunnel is tanked in order to assess the water level rise south of
the construction without any mitigation measures. Modelled results indicate that the maximum
rise is about 1.0 m at the base of Unit 1 south of the Zurich Building near the north-west corner of
Customs Street and Lower Queen Street. Therefore, without mitigation, the tanked tunnel may
cause a significant rise in groundwater levels in this area due to the physical presence of the
tunnel infrastructure physically impeding the flow of groundwater.
 Mitigation measures to address these potential groundwater rise/ damming effects discussed
above include model scenarios M4 (long-term/ permanent configuration with bottom drainage
system underneath the tunnel) and M5 (temporary construction configuration), and below in M7
with implementation of a temporary dewatering system to control groundwater levels.

M7. Sealed tunnel with groundwater pumping (dewatering) in Lower Queen Street
 For this scenario it is assumed that the tunnel is sealed and a temporary dewatering system (e.g.,
wellpoint or groundwater control system) is in place to prevent water level rise in Lower Queen
Street. Various combinations of wells and their spacing were tested. The results showed that the
3
abstraction from Fill and Upper TG needs to be about 10m /d to prevent any significant water
level rise south of the combined structures and associated potential adverse effects such as
basement flooding or groundwater breakout (discussed above in M6).
 Results indicate that the maximum groundwater level rise is about 0.4 m at the base of Unit 1
south of the DSC and 0.1 m water level rise in Lower Queen Street.
3
For this scenario the wellpoint system consists of 10 wells each with an abstraction rate of 1m /d. It is
noted that other dewatering configurations in the area could produce a similar outcome.
7.4.2
Drawdown Effects in Perched Groundwater Zones
An assessment has been undertaken of the potential groundwater drawdowns in perched zones within
compressible soils (Units 1 and 2) and associated inflow into the excavations (Appendix C).
The perched groundwater zones within ECBF residual soil, Tauranga Group and Fill reflect the
generally alternating horizons of lower and higher permeability in these units, with the low permeability
silt/clay layers forming perched zones above the regional groundwater system. The excavation may
cause partial or total dewatering of these perched layers close to the excavation. The perched
groundwater zones are limited in lateral and vertical extent.
The current geological information indicates that a significant thickness of the compressible soil
(especially Fill) occurs above the regional groundwater system along Albert Street. This provides
favourable conditions for the occurrence of pockets of saturation or perched layer(s) above the
regional groundwater. It is considered that the perched zones within the compressible sediments
mostly develop along Albert Street (including south-west corner of the DSC), where the thickness of
sediments above the regional groundwater increases. Formation of perched zones is especially likely
in areas where the regional groundwater level starts to drop below the base of the weathered ECBF.
Therefore, the assessment of effects of drawdown on perched groundwater is limited to the portion of
the Britomart to Wyndham section tunnels located between the southern half of the DSC and
Wyndham Street, with a total length of about 370 m.
The drawdown versus distance for the thickest perched layers and groundwater inflow for the tunnel
section between the DSC and Wyndham Street has been calculated. For the thickest perched layers
(3.5 m) the predicted zone of influence from the centre of the excavation (on each side of the tunnel) is
about 60 m. The result indicates that a drawdown of more than 1 m is restricted to the area within
approximately 29 m of the centre of the excavation. The total predicted groundwater inflow is around
3
1.4 m /d. The predicted drawdowns have been utilised for the assessment of potential consolidation
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settlement effects adjacent to the Britomart to Wyndham section (refer to Appendix D). Potential
settlement effects arising from groundwater drawdowns are discussed in Section 7.5 below.
The analytical method used is considered conservative as it calculates the effects for long-term
conditions (steady state) whereas, the actual excavation period will only last for 40 months (and likely
in sections) and assumes that the perched zones extend continuously to the radius of influence
whereas, in some cases they may have more limited extent.
Thinner perched layers may also be intercepted by the tunnel excavation face. However considering
their smaller average thickness (0.7 m), the effects will be limited to an area close to the excavation.
The calculated zone of influence (distance to the centre of the excavation) for other potential multiple
perched layers ranges from 0.7 m to 28 m. For the average thickness of 0.7 m, the zone of influence
will extend only about 11.5 m from the excavation.
It is noted that the 3.5 m maximum thickness of the perched layers was used in the calculations for the
entire Britomart to Wyndham section, which is greater than the average thickness. Subsequently, the
actual drawdown magnitude and extent, and groundwater inflow rates are likely to be less than
predicted due to the conservative assumptions used for the predictions.
7.4.3
Summary of Predicted Groundwater Takes
A summary of the predicted groundwater inflows into the ACZs is provided in Table 7-1 below.
Table 7-1 Predicted Tunnel Inflows (m3/day)
Fully Drained
Construction Zone
Fully Tanked
Regional
(steady
state)
Regional
(max. short
term)
Perched
Regional
Perched
ACZ A: CPO
35
210
-
0
-
ACZ B: Lower Queen Street
7
42
-
7
-
28
168
1.4
0
0
5
30
0
10
60
0
ACZ: C DSC
ACZ: Customs Street West
ACZ: Albert Street
NB “-“ indicates no perched groundwater is likely
3
This fully tanked (steady state) regional groundwater diversion through Lower Queen Street of 7 m /d
represents the predicted permanent groundwater diversion post-construction through the bottom
drainage system underneath the tunnel.
As discussed above in Section 7.4.2, an additional groundwater take is proposed through the
implementation of a dewatering system (wellpoint or groundwater control system). This will assist with
groundwater level control and the prevention of groundwater level rise, mitigating potential damming
effects in Lower Queen Street caused by the physical presence of the tunnel structure impeding the
3
flow of groundwater. Temporary groundwater abstraction of 10m per day combined for all wells is
proposed.
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7.4.4
Cumulative Effects
Both the Britomart to Wyndham section and the proposed PPL development projects have been
studied in parallel by Pattle Delamore Partners Limited, resulting in consistent assessments of
potential groundwater effects for the section of tunnel through the Precinct development between
Lower Queen Street and Customs Street. The separate results for each project have been used to
make an assessment of the likely combined (cumulative) effects of the two projects being constructed
and/or operated simultaneously.
7.4.4.1
Proposed Precinct Development
The proposed PPL development occupies the area of the existing DSC, and will include a 4 level
basement, excavated down to -12 m RL within the northern portion of its footprint (or up to 17 metres
deep). The northern and eastern perimeter walls are proposed to be constructed using overlapping
secant piles which are assumed to be watertight. Once built, the basement is to be fully sealed
(tanked), thus requiring dewatering only during its construction phase, with the basement development
expected to take 18 to 24 months.
On the southern side of the tunnel alignment the proposed PPL building foundations (and the sheet
piled wall used during construction) will penetrate through Units 1 and 2 into the top of Unit 3 between
about RL -1 m and RL -4 m along Customs Street. The sheet piled walls have been assumed to have
-8
an equivalent permeability of 1 x 10 m/s. This configuration will create a larger intrusion into the
groundwater system within Units 1 and 2 in this area (within the proposed PPL building perimeter)
than was considered for the Britomart to Wyndham section assessment.
7.4.4.2
Cumulative Drawdown Effects on Regional Groundwater
Outside of the construction areas the maximum drawdowns from both projects is expected to occur
near the southwest corner of the PPL development due to the configuration of the tunnel alignment
and the pinching out of Unit 1 (Fill/UTG) in this area. Modelled drawdowns at the bottom of Unit 1 in
this area are about 1 m in both project models. In the vicinity of Lower Queen Street and QEII (outside
the footprints of both projects), the drawdowns in Unit 1 from both projects separately are about 0.2 m
to 0.4 m.
Reasons for the similarity of drawdowns between the two projects include:

Minimal groundwater inflows are predicted to occur through the walls of the proposed PPL
development from Unit 1 (Fill/UTG). The walls are considered to be either watertight (secant pile
-8
wall) or of very low effective permeability (sheet piles at k = 1 x 10 m/s). Therefore for the
proposed PPL development it is anticipated that most of its drainage effect on the groundwater
system will be through the base of the excavation within Unit 3 (EU).

Due to the buffering effect of Unit 2 on the underdrainage effects transmitted upwards to Unit 1 the
differences in drainage configuration in Unit 3 of the two projects are fully attenuated by Unit 2.
As a result of these mitigating factors related to the PPL project, the Britomart to Wyndham project
produces the maximum effect on the spread and magnitude of drawdown in Unit 1. This, together with
the fact that the tunnel through the proposed PPL development is common to both projects, means
that the Britomart to Wyndham project also therefore represents the cumulative effects scenario for
both projects in relation to Unit 1.
For the assessment of cumulative effects on Unit 3 (EU) of both projects being constructed at once, it
is expected that the drawdowns to the north-west of the proposed PPL development to be more than
what is predicted for the west of the Britomart to Wyndham section. This is due to the deeper and
broader excavation floor (RL-12 m) in this area of the proposed PPL development compared to the
Britomart to Wyndham section (RL-8.5 m).
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In the Lower Queen Street area the drawdowns in Unit 3 caused by the Britomart to Wyndham section
are more than the proposed PPL development while along Customs Street alongside the proposed
PPL development the drawdowns are similar, caused mainly by the tunnel through the proposed PPL
development. Hence, as for Unit 1 the cumulative effects of both projects south of the tunnel
alignment can be assessed by the Britomart to Wyndham project. North-west of the tunnel, along
Lower Albert Street and Quay Street the cumulative effects in Unit 3 are represented by the
drawdowns associated with the proposed PPL development.
The cumulative effects on groundwater levels and flows in the compressible soils in Unit 1 from the
construction of both the Britomart to Wyndham section and the PPL building have been found to be no
greater than those related to Britomart to Wyndham section on its own. Only in Unit 3 (the
unweathered ECBF unit) in the area to the north-west of PPL building (Lower Albert Street and Quay
Street) is the envelope of effects defined by the PPL building effects. This is due to the deeper and
broader building basement adjacent to this area.
7.4.4.3
Cumulative Groundwater Damming Effect
In Unit 1 the Britomart to Wyndham section produces a far larger damming influence on groundwater
levels than the proposed PPL development. The proposed PPL project allows the natural seawards
moving groundwater flow in Unit 1 to pass around its perimeter. In contrast the Britomart to Wyndham
section blocks the full width of the passage between the existing Britomart Station and the western
edge of Unit 1. Hence, for the purposes of cumulative effects assessment the groundwater damming
predictions for the Britomart to Wyndham section apply.
7.4.4.4
Cumulative Drawdown Effects in Perched Groundwater Zones
The proposed PPL development is not expected to cause any additional drawdowns in the perched
zone than those predicted for the Britomart to Wyndham section. The maximum thickness of the
representative perched layer is limited to less than 3.5 m (i.e. available drawdowns) and this remains
unchanged if both excavations occur at the same time.
The Britomart to Wyndham section may cause a minor reduction in the predicted perched
groundwater inflow to the proposed Precinct development excavation as some portion of this inflow
may be diverted to the tunnel excavation. However, considering the already small perched
3
groundwater inflow rate through the Precinct walls (<1m /d, PDP 2014) such changes will be
inconsequential. Therefore, should the projects be constructed simultaneously (worst case scenario),
it is not expected that cumulative effects will differ significantly from the individually predicted effects of
the respective projects.
7.4.5
Monitoring and Trigger Levels
To address the relevant matters of discretion of the groundwater diversion rules (Rule 6.5.77of the
ACRP: ALW and PAUP, Part 3, Chapter H, Section 4.17, Activity Table 1, Rule 3.3.2), a Monitoring
and Contingency Plan (M&CP) will be prepared by the contractor and submitted to AC for certification
prior to works commencing. The M&CP requirement has been proposed through conditions (refer to
Section 10 and Appendix N) and this requires (amongst other matters), full details of the groundwater
control and monitoring network to be confirmed. The M&CP forms part of the wider CEMP framework
which is recommended as part of the Britomart to Wyndham section.
Effects from groundwater drawdown and draw-up are proposed to be intensively monitored through a
comprehensive land and building settlement monitoring programme comprising ground settlement and
building marks (refer to Section 7.5 below). Therefore, the main purpose of groundwater monitoring
will be to provide support to the settlement monitoring programme should settlement behaviour
exceed predictions.
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Sections 9 and 10 of the Groundwater Effects Assessment (refer to Appendix C) provides a range of
measures to monitor the groundwater related effects of the Britomart to Wyndham section. These
measures include:

Groundwater monitoring network, including groundwater monitoring wells near the tunnel and
adjacent to buildings within the expected zone of influence (as access and services clearance
restrictions for borehole construction allow). It is expected that the existing network of monitoring
wells will need to be supplemented by additional wells in gap areas of the network. The proposed
and existing network is outlined in Table 8 of the Groundwater Effects Assessment (Appendix C)
and drawing SYW-GEO-000-DRG-0007-1.0 (Appendix O).

Identification of groundwater drawdown alert level trigger levels in order to provide a field check
against predicted drawdown responses.

An alert level is proposed which will provide a flag that groundwater responses to the construction
works are nearing predictions and that such groundwater responses may be close to having
implications for land settlement. No alarm level is required as the settlement behaviour itself will
control the need or otherwise for contingency actions.

The Alert Level Trigger proposed is:
 90% of predicted drawdown response at the respective monitoring bore.

The following measures have been identified for the development, documentation and
implementation of trigger levels:
 Values for the trigger level that will apply for each borehole will be developed during the
preconstruction period based on the estimated or measured lowest groundwater level for each
monitoring borehole minus 90% of the estimated drawdown response.
 The developed trigger levels will be documented in the proposed Monitoring and Contingency
Plan for certification by AC which will set out actions to be undertaken should the trigger levels be
exceeded.
 Regular monitoring of groundwater levels is proposed through draft conditions of consent.
Weekly monitoring is recommended prior to and then during construction works, while monitoring
three-times weekly is proposed during excavation/ dewatering of the shaft construction areas for
those monitoring boreholes within 50 m (the “Active Construction Zone”).
7.4.6
Contingency and Mitigation Options
As mitigation and contingency actions are proposed to be based on settlement monitoring, no specific
contingency actions are proposed should exceedance of the groundwater trigger levels occur. If Alert
levels are exceeded, groundwater monitoring in the respective bore(s) will be increased to a daily
frequency and increased focus will be given to the settlement monitoring data for the areas nearby.
Subject to the development and implementation of a Monitoring and Contingency Plan by the
contractor as required through proposed conditions (and in conjunction with the further measures
outlined below at Section 7.5), it is considered that the actual and/ or potential effects associated with
groundwater diversion, drawdown, draw-up and take will be appropriately avoided, remedied and
mitigated. Associated actual and potential effects on buildings, structures, and utilities are considered
in further detail below at Section 7.5.
7.5
Ground Settlement
An Assessment of Settlement Effects has been prepared by Aurecon and is attached as Appendix D.
This report has been prepared to present an overview of the potential magnitude and effects of ground
surface settlements on existing buildings, utilities and infrastructure due to the construction of the
Britomart to Wyndham section.
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The report notes that effects associated with settlement will arise from two sources:


Mechanical settlement caused by retaining wall deflections during construction of deep excavations.
Consolidation settlement of the ground due to changes in ground water levels. It is time dependant
and based on the location and permeability of the excavation at any one time (groundwater
drawdown has previously been covered at Section 7.4).
The settlement assessment analysis considered the geology along the Britomart to Wyndham section
alignment which determined the recommended geotechnical parameters utilised. The groundwater
testing data within the groundwater assessment has defined the recommended parameters for the
permeability of each geological unit, as well as estimated groundwater drawdown profiles during
construction of the Britomart to Wyndham section.
The estimated influence zone of the potential settlement effects extends along the entirety of the
Britomart to Wyndham section route, from Britomart Station, across Lower Queen Street, through the
DSC site, across Customs Street West and up Albert Street section of the alignment.
Settlement analysis has been undertaken for the Britomart to Wyndham section of the CRL.
Representative sections were taken at key locations along the alignment which were then assessed
based on the two sources of settlement effects.
For the purposes of the settlement assessment the two sources of potential settlement effects were
individually analysed and then combined to determine the total estimated settlement effects. It is
noted that the assessment takes account of the realignment of the Albert Street Stormwater Main in
the vicinity of Swanson Street (an activity which is proposed to take place ahead of tunnel construction
is Albert Street) and the proposed PPL development. Refer to Sections 7.5.4 and 7.5.5 below for
further information.
The mechanical settlements are estimated to be up to 37 mm, reducing to 5 mm (considered to be
very minor settlement) within 12 m of the cut and cover retaining wall, a zone which extends into
adjacent properties (and buildings). The largest mechanical settlement of 37 mm is estimated to occur
at the face of the cut and cover wall at two points along Albert Street. This has the potential to cause
building damage effects (refer to Section 7.5.1 and Appendix D) to buildings adjacent to the cut and
cover works.
To understand this, further assessments have been undertaken on potentially affected buildings to
determine the expected level of effects based on the estimated tensile strains and differential
settlements or slope of the ground under the subject buildings. These settlements were then used to
assess the building damage category for the surrounding structures in accordance with the Building
Damage Assessment Criteria (Burland, 1997, see also Section 7.5.1 below), which found that the
effect on the majority of surrounding structures is expected to be “Negligible”. A limited number of
buildings are estimated to fall within the “Very Slight” and “Slight” categories. Any buildings estimated
to be potentially subject to settlement effects will managed through ongoing monitoring and mitigation
measures, including condition surveys (see Section 7.5.1 and 7.5.6 below), which will be implemented
as part of the proposed conditions of resource consent (Appendix N).
7.5.1
Ground Settlement Effects on Buildings
An assessment of risk of damage to adjacent buildings that fall within the contours of estimated
surface settlement has been carried out in accordance with the internationally accepted Burland
method (Burland, 1997). The level of risk for each particular building has been classified, with the
potential damage to specific buildings based on both the estimated settlement and building structure.
For the purposes of a preliminary assessment of structural damage, a zone within the estimated
10mm settlement contour was defined and all buildings within this zone were subject to a Stage 2
assessment (Loganathan and Poulos, 2009, Rankin, 1988) and the Damage Assessment Criteria in
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accordance with the internationally accepted Burland method was applied. Those buildings falling
outside of this contour, where the slope was shallower than 1/500, were considered to have no more
than “Negligible” effects as defined by the Damage Assessment Criteria (identified within the
Assessment of Settlement Effects). Total settlement has not been utilised in the Stage 2 phase,
recognising that it is relative deflection or angular distortion under a building that causes adverse
effects rather than the magnitude of the total settlement. An additional sensitivity assessment was
undertaken on the buildings predicted to be affected by ground settlement by scaling the estimated
effects up to the Moderate Damage Classification. A Stage 3 assessment would have been carried
out where buildings fell within the “Moderate” category, however none were identified.
The assessment overall estimates that there will be “Negligible” effects on the majority of buildings in
the vicinity of the Britomart to Wyndham section, with a limited number of buildings with ”Very Slight”
and “Slight” effects adjacent to the cut and cover works. Each of these is limited to the ‘aesthetic
damage’ category, with no structural building damage anticipated.
The following buildings have been identified as subject to ”Very Slight” and “Slight” building damage
as a result of potential settlement effects:
Table 7-2 Buildings Affected by Estimated Settlement Due to the Cut and Cover Excavation.
ID
St. No
Street
Estimated
Tensile Strain
Estimated
Slope
Estimated Total
Settlement
Building Damage
Classification
1
12
Queen Street
Building not assessed in detail. Refer to Section 5.3.2 of Appendix D.
2
21
Queen Street
0.06%
1/2850
5mm
Very Slight
3
23-29
Albert Street
0.02%
1/2900
10mm
Very Slight
4
12-26
Swanson Street
0.13%
1/650
25mm
Slight
5
35
Albert Street
0.06%
1/2250
15mm
Very Slight
6
37
Albert Street
0.08%
1/2250
15mm
Slight
7
39
Albert Street
0.07%
1/2250
15mm
Slight
8
46-50
Albert Street
0.04%
1/2250
12mm
Very Slight
9
52-56
Albert Street
0.07%
1/2150
12mm
Very Slight
10
41
Albert Street
0.07%
1/2650
15mm
Very Slight
11
51-53
Albert Street
0.08%
1/2550
15mm
Slight
12
55
Albert Street
0.07%
1/2650
15mm
Very Slight
13
57
Albert Street
0.07%
1/2700
15mm
Very Slight
14
61
Albert Street
0.06%
1/900
15mm
Very Slight
15
58
Albert Street
0.04%
1/750
12mm
Very Slight
16
38
Wyndham Street
0.04%
1/800
12mm
Very Slight
17
63
Albert Street
0.04%
1/2850
15mm
Very Slight
The analysis confirmed that no buildings fell into the “Moderate” category.
Building Condition Surveys are proposed to be undertaken prior to commencement of excavation and
dewatering to manage any potential ground settlement effects on buildings. Any damage to buildings
or structures resulting from settlement (and associated groundwater drawdown) as part of the
construction of CRL Britomart to Wyndham section shall be recorded and repaired with the costs
associated with the repair met by the AT.
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It is noted that any buildings identified in a state of dilapidation during the pre-construction building
condition surveys may require further detailed engineering assessment and potential strengthening
prior to construction commencing.
Further monitoring and contingency measures are outlined in Section 7.5.6 below to minimise and
mitigate potential settlement effects on buildings, which will be implemented through conditions of
resource consent (Appendix N).
7.5.2
Ground Settlement Effects on Utilities
Due to the highly developed nature of the urban environment at the locations of the proposed
excavation, there are a number of utilities which run across or close to the areas of excavation.
Potential settlement effects on notable major utilities at considerable depth have been assessed due
to their proximity to the works. In particular these include the realigned Albert Street Stormwater Main
(subject to a separate resource consenting process), Customs Street Watermain, and the Queen
Street Stormwater Main. The assessment has incorporated the maximum settlement slope based on
relatively conservative parameters, distance of clearance and age of each utility. The predicted
settlements are considered acceptable for these major utilities.
Minor utilities are defined as those with a diameter of 600mm or less and which are located near the
existing ground level. Utilities which lie perpendicular to an excavation are estimated to be most
susceptible to maximum settlements. The construction of the guidewall along the alignment is
assumed to be an unsupported 1.5 m deep excavation without a retaining structure. The guidewall
will be likely to induce potential differential settlements that may potentially affect minor utilities without
the implementation of appropriate protection measures.
Consequently, settlement slopes within one metre of the excavation retaining walls have been
assessed. It is proposed that existing utilities are supported or excavated in this one to two metre
zone in order to protect and avoid damage. At Lower Queen Street the maximum estimated
settlement slope resulting from the CRL excavation is 1:197 (which is slightly outside the 1:200
recommended maximum settlement slope) and 1:236 along Albert Street. Movements at this minimal
degree are not anticipated to affect the minor utilities in these areas. It is noted that a number of
Chorus ducts may be present, however there is little available information on their construction
material or condition, therefore a conservative value of 1:200 has been utilised.
Overall it is considered that both major and minor utilities in the vicinity of the Britomart to Wyndham
section works will experience negligible effects as a result of potential ground settlement, subject to
the adoption of appropriate protection measures (see Section 7.5.5 below).
7.5.3
Ground Settlement Effects on Roads
The construction of the guide wall along the alignment is predicted to affect adjacent roads. The guide
wall may induce significant differential settlements within 1 to 2 m of the excavation. Potential effects
may include cracking of the road surface, however it is likely that temporary surfaces will be provided
on affected sections of road to allow continued operation of traffic. Road surfaces will be reinstated
following construction.
Differential settlement effects on roads arising from adjacent excavation may result in changes to
overland flow paths. Monitoring of differential settlement will be undertaken by surveying ground
surface monitoring which will be undertaken during excavation.
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7.5.4
Cumulative Effects of Britomart to Wyndham Section and Albert
Street Stormwater Main Realignment
The Albert Street Stormwater Main realignment is a separate but related project (subject to a separate
resource consenting process), which is proposed to be constructed ahead of the Britomart to
Wyndham section. The potential settlement effects arising from these works are relevant to consider
from a cumulative effects perspective. The works associated with the Albert Street Stormwater Main
Realignment, including the requirement for a shaft proposed to be located at Swanson Street and the
stormwater main construction along Albert Street will have caused surface settlements prior to the
construction of the Britomart to Wyndham section.
The maximum settlement due to the stormwater main construction along Albert Street is estimated at
3 - 4 mm above the centreline of the pipe alignment. These small settlements are unlikely to have an
effect on the structures or utilities discussed previously, and will have a negligible effect on the
estimated Britomart to Wyndham section settlements.
The construction of the Swanson Street shaft is estimated to have caused up to 14 mm surface
settlement, reducing to 5 mm within approximately 17 m of the shaft walls prior to the construction of
the Britomart to Wyndham section. This settlement will have a cumulative effect with the Britomart to
Wyndham section construction. This cumulative effect is taken into consideration in the building
assessments, based on the building Damage Assessment Criteria (Burland, 1997; see also Section
7.5.1 above). Due to settlements occurring from the prior construction of the Swanson Street shaft,
the cumulative effect extends up to approximately 15 m from the cut and cover wall near the Swanson
Street shaft. Therefore any potentially affected buildings requiring further assessment have been
summarised in Section 7.5.1 above.
7.5.5
Culmulative Effects of Britomart to Wyndham Section and the
Precinct Development
On the basis of preliminary information provided at the time of preparing this Report, it is anticipated
that there will be cumulative settlement effects where the cut and cover excavation meets the
proposed PPL development excavation. In what is referred to as the potential cumulative effects
zone, these effects could potentially double the settlements in very localised areas within the Queen
Street and Customs Street road reserve where both excavations meet. It is not expected that any
additional buildings will be affected by this cumulative settlement effect. However there will likely be
additional potential effects on utilities in these areas. The following utilities have been identified:

A 1200mm diameter stormwater line in Queen Street which is currently directly within the potential
cumulative effects zone. However it is proposed as part of the construction of the Britomart to
Wyndham section to relocate this pipe further toward the centre of Queen Street, which will remove
the potential for effects on this utility.

A 600mm diameter concrete lined steel potable watermain runs along the northern side of Customs
Street and is expected to be within the potential cumulative effects zone. Based on the current
assessment of this pipe it is expected it will be able to withstand additional settlement effects
without being adversely affected.

A number of other utilities will lie within the potential cumulative effects zone, however it is expected
that due to the size of these utilities they will withstand further effects without being adversely
effected.
Aurecon has not reviewed the PPL development plans and is therefore unable to provide further
analysis at this stage. Further analysis is likely to be required to confirm the extent of potential
cumulative effects of the Britomart to Wyndham section and the PPL development; to confirm that the
utilities in these areas will not be adversely affected during construction. It is anticipated that any
potential adverse settlement effects will be appropriately mitigated however and any monitoring
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required will be applied in accordance with the M&CP and the proposed draft resource consent
conditions (contained in Appendix N).
7.5.6
Monitoring and Contingency Measures
Monitoring of adjacent buildings, utilities, roads and actual ground movements is essential to:




Confirm the estimations for the assumed ground conditions.
Verify design assumptions.
Confirm the construction induced surface settlements during excavation.
Control potential associated effects.
Monitoring will be required before construction commences, during construction and following
completion to monitor the effects of the construction of the Britomart to Wyndham section. Proposed
monitoring and indicative contingency measures have been recommended in order to avoid, remedy
and mitigate potential damage to buildings and services during construction of the Britomart to
Wyndham section. These are summarised below and in the Assessment of Settlement Effects
contained in Appendix D. Drawings CRL-BTM-STR-000-DRG-0450, CRL-PAT-STR-000-DRG-0400,
CRL-SYW-STR-000-DRG-0053 and CRL-SYW-STR-000-DRG-0054 outline monitoring measures and
trigger levels for each identified building and service (attached to Appendix D). Further measures will
be detailed in the M&CP, required to be implemented through proposed conditions of resource
consent (refer to Section 10 and Appendix N).
A series of ground survey marks will be installed at specified intervals radiating out from the Britomart
to Wyndham excavation and regularly monitored so the actual surface settlements can be quantified
and compared against the estimated settlements. The markers will generally be set out adjacent to
sensitive structures and along the streets intersecting the Britomart to Wyndham section to match the
cross sections that have been used for the settlement analysis. The proposed ground survey network
is identified on drawings CRL-PAT-STR-000-DRG-0401 and CRL-PAT-STR-000-DRG-0404 (attached
to Appendix D) and will be further confirmed as part of the M&CP.
In addition to the ground settlement markers, survey monitoring markers (Building Monitoring Marks)
will be placed at the base of sensitive buildings and at points along their facades and columns. This
will allow the actual building movement to be monitored and compared with the estimated effects. The
proposed building monitoring marks are also identified on drawing CRL-SYW-CIV-000-DRG-0030
(attached to Appendix D) and will be further confirmed as part of the M&CP.
Ground Support Monitors are also proposed to detect structural movement of pile walls during
construction. The zones for these are detailed on drawing CRL-PAT-STR-000-DRG-0401 with
monitoring details indicated on CRL-PAT-STR-000-DRG-0400.
The following specific monitoring is proposed:
Pre-construction

Baseline readings of the horizontal and vertical movements over a period of time leading up to the
commencement of the construction.

The monitoring will be compiled into a factual report to form part of the input for the next phases of
construction.
During construction

Frequency of monitoring at each marker within 50 m of the tunnel excavation during excavation/
dewatering on a daily basis.
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


Reduced monitoring outside the 50 m monitoring zone, to be undertaken on a monthly basis.
The monitoring will be reviewed at daily meetings with AT and other Client representatives.
Further assessments may be required where specified triggers levels are exceeded.
Post-construction

Monitoring on completion of all construction works to continue until stable measurements with
respect to ground movement can be demonstrated.

Monitoring to continue at locations where movements are greater than expected and/or where
trigger levels have been exceeded.
Building specific

The Zurich Building will also require further monitoring due to the close proximity of the Britomart to
Wyndham section. The details for the monitoring of this building are described on drawing CRLSYW-STR-000-DRG- 0054 (attached to Appendix D) and includes installation of inclinometers and
regular surveying of the building and piles.
Utilities

No further monitoring is recommended for utilities unless monitoring indicates that settlement levels
are greater than expected. However, if the monitoring which is proposed for building movements
identifies that settlement levels are greater than expected it is proposed that monitoring is
implemented for the utilities. This would involve monitoring the capping beams along the excavation
and additional monitoring would be implemented on an “as required” basis. If monitoring is required
it shall be carried out daily during the construction period, and following the completion of
construction, every 3 months for 1 year.
A range of targeted mitigation measures are also proposed should settlement levels lead to a greater
than anticipated effect during construction. These include specific mitigation measures and responses
for the cut and cover works, groundwater control, utilities and both non-structural and structural
measures for buildings.
Subject to the development and implementation of a M&CP by the contractor (in conjunction with the
measures outlined at Section 7.4 in relation to groundwater monitoring) and as required by proposed
conditions of resource consent, it is considered that the actual and potential effects associated with
ground settlement will be appropriately mitigated and therefore will be minor.
7.6
Effects on Utilities
An overview of the known existing services is set out in Section 3 of the Assessment of Settlement
Effects (Appendix D) prepared by Aurecon.
While the Britomart to Wyndham section works have the potential to damage, interfere with, or disrupt
the operation of existing network utility services as a result of ground settlement (discussed above),
other damage can also result from uncovering services in unknown locations.
No physical impact on other utilities is expected during construction. The Britomart to Wyndham
section contractor will determine in conjunction with utility operators guidelines and protocols to
determine the specific location of utilities and acceptable separation distances prior to excavation.
Suitable measures will be taken to ensure that the services are adequately supported or managed
once exposed.
The proposed conditions require the implementation of a M&CP and associated settlement monitoring
requirements. Overall, any effects on existing infrastructure will be appropriately managed, as is
common with the installation of utilities within a shared corridor.
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7.7
Contaminated Land
7.7.1
Overview
A Contaminated Land Assessment (CLA) has been prepared by Golder and is included in Appendix
E. The investigation was undertaken to assess the potential impacts on human health and the
environment, associated with the Britomart to Wyndham section.
The CLA fulfils the technical reporting requirements for assessment of contamination effects against
the Permitted Activity (PA) criterion of the ACRP: ALW and the PAUP, and the applicable standard
with respect to the commercial / industrial exposure scenario of the NESsoil.
The CLA was also prepared as a Detailed Site Investigation (DSI) in accordance (where relevant) with
Ministry for the Environment (MfE 2011a) Contaminated Land Management Guideline No. 1:
Reporting on Contaminated Sites in New Zealand. However, there are some areas within the
Britomart to Wyndham section footprint which have not been investigated and therefore, the
investigations are considered to be limited in scope and not in accordance with Ministry for the
Environment (MfE 2011b) Contaminated Land Management Guideline No. 5: Site Investigation and
Analysis of Soils.
Soil and groundwater quality samples were collected and laboratory analysed for a suite of metals /
metalloids and petroleum based hydrocarbons. In addition, groundwater samples underwent analysis
for major ions, nutrients, metalloids and standard water quality indicators. In relation to ground gas,
monitoring was undertaken for standard ground gases including carbon dioxide, carbon monoxide,
methane and hydrogen sulphide.
7.7.2
Soils
Nickel exceeding the Permitted Activity (PA) criterion (105mg/kg) was identified within fill in one
borehole. However, the CLA states that due to the low concentrations of other metals, the nickel is
likely to be from volcanic deposits, typical of the Auckland region. Zinc above background
concentrations was found in one borehole, however it is below the PA criterion.
Laboratory analysis of soil samples did not report contaminant concentrations exceeding the
applicable standards (e.g., NES SCShealth) selected in accordance with Regulation 7 of the NESsoil.
Although soil contamination has not been identified above relevant NES SCShealth standards for
commercial/industrial land use or above the ARCP: ALW and PAUP permitted activity criteria, the
investigations were of limited scope and it is considered that contaminated soils may be encountered
within the reclamation fill, particularly in the Britomart to Customs Street West area.
Due to the limited investigation scope and the potential for contaminated soils to be present, it is
considered that there are potential environmental effects and risks to human health from contaminated
soil during earthworks associated with the constriction of the Britomart to Wyndham section.
Consequently a Draft Contaminated Soils Management Plan (CSMP) (provided as an appendix of the
CLA, Appendix E) provides a framework to manage potential adverse human health and
environmental effects during earthworks and also provides for mitigation of potential effects associated
with unexpected discovery of contamination during earthworks.
The Draft CSMP outlines measures for:

Soil management (excavation, transportation and disposal, dust, erosion and sediment controls and
decontamination);

Health and safety (training, control measures, identification of hazards, hazard minimisation
procedures); and
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
Contingency measures for unexpected encounters of contamination.
Subject to the revision and implementation of the Draft CSMP by the contractor (in conjunction with
the measures outlined at Section 7.3 in relation to erosion and sediment control) as required by the
implementation of proposed conditions (refer to Section 10 and Appendix N), it is considered that the
actual and potential effects associated with contaminated land will be appropriately managed and
mitigated. It is important to note that the CSMP forms part of the wider CEMP framework which is
recommended as part of the Britomart to Wyndham section.
7.7.3
Groundwater Contamination
The groundwater quality samples were collected and laboratory analysed for major ions, nutrients and
standard water quality indicators to determine whether groundwater had been impacted from any
contaminated material identified in the soil sampling.
The groundwater analytical data has been compared to the Australian and New Zealand Guidelines
for Fresh and Marine Water Quality (ANZECC 2000). The results of the groundwater analysis returned
results below the relevant ANZECC (2000) trigger levels at the 80 % level of protection for freshwater
species (where available). Therefore, based on groundwater quality samples taken to date, there are
no anticipated adverse environmental effects associated with excavations which may encounter
perched groundwater. However, there will be water quality assessments undertaken prior to
discharge, as discussed in Section 7.8 and the Water Quality Assessment (Appendix F). Draft
conditions have also been proposed which require an ongoing water discharge monitoring programme
to be prepared and maintained for the duration of construction in order to ensure water quality, prior to
discharge, meets appropriate standards.
7.7.4
Ground Gas
The one ground gas monitoring event found that carbon dioxide concentrations were elevated above
atmospheric carbon dioxide concentrations but below levels which represent a risk to human health.
Oxygen levels were recorded within normal atmospheric range at sea level.
Although ground gas has not been identified at levels which pose a workplace exposure risk to human
health, the CLA recommended that further monitoring of ground gas is considered to be appropriate to
allow a more robust assessment of effects.
Until then, it is considered prudent to assume volatile contaminants could be present in reclamation fill.
Therefore, the Draft CSMP (an appendix of the CLA, Appendix E), sets out mitigation measures if
vapours are suspected. A final CSMP(s) is to be developed and implemented, as set out in draft
proposed conditions at Appendix N.
7.8
Water Quality
7.8.1
Overview
A Water Quality Assessment has been prepared by Golder and is included in Appendix F. The
assessment was undertaken to determine potential impacts on the water quality and ecological values
of the receiving environment (Waitemata Harbour).
Water quality from the post construction (but non-operational) Britomart to Wyndham tunnels has not
been considered, because there will be minor groundwater seepage (i.e., damp patches with no
visible flow of water) and no stormwater flow into the tunnel. Stormwater quality from above ground
impervious surfaces, once construction works associated with the Britomart to Wyndham section are
completed, has not been assessed, as the proposed surface changes do not create any new
impervious area. An exception to this is the completion of the Albert Street works, Albert Street will be
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resurfaced and is likely to include a number of improvements, such as tree pits, and first flush
treatment of stormwater which will result in a net benefit to stormwater quality.
Potential sources of water which need to be managed and discharged during the construction of the
Britomart to Wyndham section are from:




Stormwater generated within the CSAs.
Groundwater pumped to maintain water levels.
Stormwater and groundwater encountered in the ACZs.
Washed off vehicles prior to leaving the CSAs and ACZs.
These will be addressed in turn.
7.8.2
Stormwater from CSAs
Stormwater from CSAs in relation to Industrial or Trade Activities (ITAs) and Environmentally
Hazardous Substances (EHSs) are addressed in Section 7.9 below. In terms of sediment becoming
entrained in stormwater which falls on the CSA, it is considered that the amount of TSS created within
the CSAs will be limited as the sites will be located on impervious surfaces and active on-site
management within the CSAs will ensure that excess solids on impervious surfaces do not contribute
TSS to the stormwater system. It is proposed that catchpit protection will be installed on all catchpits
within the CSAs as a secondary control measure to minimise the amount of sediment entering the
stormwater system. The proposed water discharge monitoring programme (proposed condition of
resource consent) will ensure that any potential effects will be appropriately mitigated.
7.8.3
Groundwater
Groundwater quality has been assessed (between 2012 and 2014) at locations in the downtown and
Albert Street areas within and adjacent to the Britomart to Wyndham section. The data shows that
groundwater in the reclamation fill in the downtown area is strongly influenced by seawater intrusion
into the fill from the Waitemata Harbour.
Groundwater quality has also been assessed based on three rounds of groundwater monitoring with
groundwater samples collected from boreholes EB301, EB302, EB306 and BH202B undertaken in
November 2014. The analysis undertaken included trace elements and man-made organic
compounds including a range of hydrocarbons.
The groundwater analytical data were also compared to the ANZECC (2000) 95 % trigger values for
the protection of marine biota. Maximum concentrations of arsenic, copper, lead and zinc were found
to be above the ANZECC (2000) 95% trigger values for marine water. Results included:



Higher concentrations of arsenic were measured in two wells sampled in 2012.

Higher nickel concentrations were measured (average of 11 mg/m in both cases) in well EB306 on
the reclamation and BH203 on Albert Street.

Zinc concentrations varied between wells with a highest concentration (116 mg/m3) measured in
EB308 in 2014.
Elevated concentrations of copper were measured in well BH203 in 2014.
Elevated concentrations of lead were measured in 2013 in BH203 and BH 211 but were not
measured at the same level in the replicated samples collected in 2014.
3
However, the results show that less than 10 fold dilution is required to ensure that the 95 % trigger
values are achieved in the receiving environment.
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Overall, groundwater quality was assessed as good based on the samples collected. In addition
ground investigations (described in Section 7.7 above) have not identified any significant
contamination in the Britomart to Wyndham section of works. However, it is recognised that there is
potential for contaminants to be present and fill materials being handled during works associated with
the Britomart to Wyndham section of works. Consequently, it is proposed to direct pumped
groundwater to the water treatment system and undertake an assessment of the water quality
(explained in more detail in Section 7.8.4 below) prior to discharging to the local stormwater network.
As previously noted, draft conditions have been proposed which require an ongoing water discharge
monitoring programme to be prepared and maintained in order to ensure water quality, prior to
discharge, meets appropriate standards and potential effects are appropriately mitigated (refer to
Section 10 and Appendix N).
7.8.4
Stormwater and groundwater in the ACZs
Within ACZs, water will originate from groundwater flow from excavations below groundwater levels
3
and stormwater. The predicted daily groundwater flow into each of the ACZs is 35m /day for Zone A,
3
3
3
3
7m /day for Zone B, 28m /day for Zone C, 5m /day for Zone D, and 10m /day for Zone E.
Precipitation volumes for each zone are based on the 50 year, 24 hour duration storm event and
3
3
catchment areas provided in the DCR, and are predicted to be 29m for Zone A, 290m for Zone B,
3
3
3
290m for Zone C, 116m for Zone D, and 842m for Zone E.
Elevated to high concentrations of TSS would be expected in water generated within the ACZ and
therefore will be collected for discharge via pumping or collection in sumps with subsequent pumping.
Water containing elevated TSS will be treated prior to discharge so that concentrations are less than
3
50 g/m for 95 % of the time.
This will ensure the TSS concentration in the stormwater discharge from the ACZs would likely be
lower than that in the stormwater generated from untreated adjacent road surfaces and impacts
relating to floatable materials, scums, oil and grease should also not occur. This discharge standard
has been proposed as a condition of resource consent (refer to Appendix N).
Once the water has been treated, daily assessment of the water quality will be undertaken. The water
will be deemed suitable for discharging to the local stormwater network if:



Water clarity exceeds 10 cm as measured with a black disc;


It contains no visible TPH (sheens, odour); and
3
It meets the 50 g/m performance limit;
Key contaminant concentrations that fall below the range identified by 95 % ANZECC (trigger
values) multiplied by a factor of 50;
The pH falls within between 5 and 9.
If the water quality does not meet these basic standards, it will be classified as being of moderate or
poor quality, and will either be sent through oil separators and filters (or appropriate enhanced
settlement) prior to being discharged to the local stormwater system or will be collected in water
tankers and removed off-site for treatment and discharge. A water quality discharge monitoring
programme has been proposed as a condition of resource consent (Appendix N) to ensure that water
quality, prior to discharge, meets appropriate standards and to provide specific details related to water
quality monitoring, reporting and maintenance of the discharge water management and treatment
system. This programme will ensure the potential effects associated with water quality and discharges
are appropriately mitigated throughout the construction phase of the Britomart to Wyndham section.
The water quality discharge monitoring programme forms part of the wider CEMP framework which is
recommended as part of the Britomart to Wyndham section.
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Following construction, the tunnel environment is essentially dry and will contain no definable and
significant sources of contaminants. Only minor groundwater infiltration is expected into the tunnel
environment. The lack of water interaction within the interior of the tunnel during this period minimises
the potential for contaminants to enter water being pumped to the stormwater system.
7.8.5
Washed off vehicles prior to leaving the CSAs and ACZs
A wheel wash will be installed in any ACZs where vehicular access to the open cut section of the
works is provided to minimise tracking of sediment from the ACZ to the CSA. Any wheel wash water
will be managed through discharge to the stormwater/groundwater treatment tanks.
7.9
Industrial and Trade Activities
An Industrial and Trade Activities Assessment (ITA) Assessment has been prepared by Golder and is
included in Appendix G. The assessment was undertaken to determine potential impacts associated
with the Industrial and Trade Activities to be undertaken in the six CSAs for the Britomart to Wyndham
section.
The CSAs will include provision for the storage of materials, and Environmentally Hazardous
Substances (EHS), as well as refuelling facilities, and a jet grouting plant at CSA 2 and 4. Due to the
proposed activities on the CSA, the ITA Assessment makes the following recommendations:

Waste compactors and bins that are stored outside must be covered (lids closed) to prevent
rainwater entry.

Washwater from the wheel wash activities will be collected and treated onsite before being
discharged to the stormwater system.

Other minor sources of wastewater, including the jet grout wastewater, and any wastewater from
concrete truck washouts, will be collected onsite (in a skip or similar) before being pumped out by
an approved liquid waste disposal contractor.


An Emergency Spill Response Plan will be developed.

All chemicals are stored in a designated EHS storage area. EHS storage will be checked during the
weekly site inspections.

Install catchpit protection on all catchpits within the CSA boundaries as a secondary control
measure to minimise contaminants entering the stormwater system.
All EHS will be stored in a manner that prevents the entry of rainwater into the container and will be
stored in a secondary containment device (such as a bund) or within a containment system.
In addition, Draft ITA EMP has been prepared by Golder and is included in Appendix G to manage
the ITAs that will be undertaken in the six CSAs.
The Draft ITA EMP includes a Draft Emergency Spill Response Plan and outlines:




Areas of potential risk to stormwater quality.
The site management controls and procedures to manage identified risks.
Contingency measures.
The inspection and maintenance programme, record keeping and roles and responsibilities.
Subject to the revision and implementation of the Draft ITA EMP by the contractor (in conjunction with
the measures outlined at Section 7.3 in relation to erosion and sediment control), and as required
through the proposed conditions of resource consent, it is considered that the actual and potential
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effects associated with the Industrial and Trade Activities to be undertaken in the six CSAs will be
appropriately mitigated.
7.10
Works within Flood Hazard Areas and Overland Flow Paths
Earthworks associated with the Britomart to Wyndham section will take place in areas shown as a
flood plain (1% AEP) under the PAUP and associated overland flow paths based on AC GIS data
(refer to DCR, Appendix B). Specifically, these areas are (from north to south):



Lower Queen Street, QE2S, Galway Street (ACZs A and B and CSAs 1 and 2).
Customs Street West Intersection and DSC (ACZ D and CSA 5).
Albert Street (ACZ E).
Flood plain areas, overland flow paths and their relationship to ACZs and CSAs and any proposed
mitigation measures are described further below.
Lower Queen Street, Queen Elizabeth II Square, Galway Street

A major overland flow path with a catchment of 120 ha (crosses ACZs A and B, and CSAs 1 and 2)
is likely to be affected during construction works carried out on the eastern side of Lower Queen
Street during larger storm events when the pipe network capacity is exceeded. A diversion bund or
structure as part of the worksite is proposed to be installed to direct flows around ACZs and CSAs
while ensuring any diversion does not adversely impact surrounding buildings.

A second minor overland flow path with a catchment area of 0.2 ha runs through QE2S (ACZs B
and C and CSA 3). As the likelihood of such an event occurring during construction is low and the
consequences of this event would only result in nuisance flooding of the ACZs, no specific
mitigation measures are proposed.

During a 100 year flood event, flooding occurs within the carriageway of Lower Queen Street and
QE2S (ACZs B and C and CSAs 2 and 3). On completion of construction, levels are to be
reinstated to their original contours and therefore, flood plain levels are likely to be unchanged.
Customs Street West Intersection and Downtown Shopping Centre

At Customs Street West (ACZ D), two overland flow paths merge at the north eastern corner of the
intersection with Albert Street (likely to cross into the ACZ D and CSA 5). It is proposed that the
hoardings along the boundary of the site be constructed with a seal at the base of the barrier to
divert the overland flow path on the eastern side of Albert Street within the narrowed road corridor.
Although the road corridor is narrowed, it is still considered sufficient in capacity to convey the flows
without overtopping kerblines or negatively impacting on adjacent buildings.

No flood plains are present at ACZ D or CSA 5.
Albert Street

Four overland flow paths and flood plains along Albert Street (ACZ E) are identified within the Albert
Street works extents. These include the following:
 Overland Flow Path 1 – generally follows the western edge of Albert Street. This western edge
path will be maintained during construction.
 Overland Flow Path 2 – generally runs along the kerb on the eastern side of Albert Street. This
is the same minor flow path discussed in relation to ACZ D above. These flow paths are
relatively minor (contributing catchments of approximately 8 ha and 4 ha respectively). Although
works are proposed to be undertaken within the centre of Albert Street, it is considered that a
sufficient corridor between the worksite and existing kerbline is likely to remain outside the project
extents for the entire length of Albert Street to direct the overland flows.
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During construction, the overland flow path which flows across Albert Street is likely to be
directed north along the project’s western extents into Lower Albert Street or Customs Street
West.
Post-construction, all surface levels are proposed to be reinstated within Albert Street to their
current level and therefore replicate the current overland flow scenario.
 Overland Flow Path 3 – starts on the eastern side of Albert Street approximately mid-way
between Swanson and Wyndham Streets. This overland flow path heads away from ACZ E
within Albert Street and therefore only impacts the upstream extent of this flow path. It is
therefore not anticipated that the construction will affect this overland flow path.
 Overland Flow Path 4 – runs from west to east along Wyndham Street. It is relatively minor, with
a contributing catchment area of 0.3 ha. The project is likely to block the upper portion of this
overland flow path during construction. This flow path is proposed to be dealt with similarly to that
at Customs Street West in that the likelihood and consequence of flow from this overland path is
minor and can be dealt with through site management. Post-construction, the road is proposed to
be reinstated to its original levels and the overland flow path will return to its original alignment.

A small flood plain is located south of Swanson Street on the eastern side of the road. This 100
year flood plain extends approximately from the kerb across the eastern most traffic lane but is
likely to be contained within the proposed single lane traffic corridor; therefore no additional
mitigation is proposed.
It is considered that with the implementation of appropriate mitigation measures outlined in the DCR
(Appendix B) and the Draft ESCP (Appendix I) potential adverse effects on flood hazard areas
arising during construction from earthworks will not exacerbate flooding upstream or downstream of
the works and will not result in permanent reduction or loss of floodplain storage. Draft conditions of
consent with respect to erosion and sediment control have been put forward, including the
requirement for an ESCP (refer to Appendix N) to ensure potential effects are mitigated.
7.11
Air Quality
An AQA has been prepared by Golder and is included in Appendix H. The purpose of this report is to
provide an assessment of the air quality related effects associated with the proposed Britomart to
Wyndham section and an assessment of the activity status of these works in relation to the air quality
rules of the ACRP: ALW and the PAUP.
The assessment focussed on the main potential air quality impacts being due to construction dust
particulate matter, as discharges of odour, hazardous air pollutants, and vehicle emissions are
expected to be relatively minor for the construction of the Britomart to Wyndham section.
Sources of dust during construction include the excavation and handling of materials, suspension of
surface dust by vehicles removing excavated material and vehicles arriving with material for
backfilling, and wind-blown dust from exposed surfaces.
The potential dust effects were assessed using FIDOL factors (Frequency, Intensity, Duration,
11
Offensiveness and Location) relating to nuisance effects of construction and earthworks dust. The
assessment concluded that due to the very close proximity of sensitive activities to potential sources
of dust, there is potential for them to be subject to high intensity dust impacts. The close proximity of
sensitive activities also means that they are subject to a wide range of wind directions and therefore
exposed to relatively frequent strong wind conditions.
11
The FIDOL factors are described in detail in the MfE ‘Good practice guide for assessing and managing the environmental effects of dust
emissions’ (“the Good Practice Guide” – (MfE 2001))and ‘Auckland Regional Council Technical Publication 152: Assessing Discharges of
Contaminants into Air’ (TP152 - ARC 2002).
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The AQA (Appendix H) recommended a combination of a high degree of dust management and
mitigation measures, combined with continuous real time monitoring of dust at a number of
representative locations to ensure the measures are being effective and potential adverse effects are
no more than minor.
The Air Quality Assessment proposes a number of mitigation measures to manage the key sources of
dust associated with excavation which are generated from the vehicle movements and wind erosion of
material from exposed surfaces within the trench. Examples of mitigation measures are as follows:

A water cart will be used to dampen down the exposed and excavated surfaces during the first
stage of excavation.

A suspended water spray system or other suitable system to be potentially installed for suppressing
dust during the remaining stages of trench excavation but also during the backfilling operations.

It is proposed to install a wheel wash at the exits of the ACZs and CSAs to avoid vehicles tracking
soil off-site.

It is also recommended that a vacuum sweeper truck be used to regularly sweep the public roads
around any exits from the ACZs and CSAs.

Where cement powder is stored in a small silo, the silo will be fitted with a filtration system and an
alarm to warn the operator to stop filling when the silo is approaching full.

Weather forecasts for strong winds and rainfall events will also be monitored so that appropriate
dust management responses can be planned.

It is recommended that continuous dust monitoring (including an alarm system) be carried out for
the duration of the earthworks and construction activities associated with the Britomart to Wyndham
section.
A Draft Air Quality Management Plan (AQMP) has been prepared (contained within Appendix H)
which sets out a detailed framework for the management, mitigation and monitoring measures to be
implemented in the construction and earthworks activities associated with the Britomart to Wyndham
section. The Draft AQMP focuses principally on the sources of dust discharges, and will address the
risk of discharges from each ACZ and associated CSAs, providing a greater level of detail and
information on daily observation logs, complaint investigation and response procedures, training, and
roles and responsibilities. The AQMP forms part of the wider CEMP framework which is
recommended as part of the Britomart to Wyndham section.
It is considered that with the implementation of appropriate mitigation measures outlined in the Draft
AQMP (contained within Appendix H) and the Draft ESCP (Appendix I), and monitoring measures
outlined in the Draft AQMP, as required by the proposed conditions of resource consent (Appendix
N), potential adverse effects on air quality arising during construction can be appropriately managed.
7.12
Historic Heritage
A Heritage Impact Assessment (HIA) has been undertaken by Salmond Reed Architects for the
Britomart to Wyndham section and is attached at Appendix J. The HIA has been undertaken with
reference to the DCR (Appendix B), Assessment of Settlement Effects (Appendix D) and Drawings
(Appendix O).
The HIA considers the potential effects of the proposed works on one directly affected scheduled
historic heritage structure:
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
Chief Post Office - 12 Queen Street, Category A listing [Ref # 02021 PAUP]. The ‘extent of place’
has been defined within the PAUP.
12
Potential impacts on adjacent historic heritage structures along the Britomart to Wyndham section
works are considered to be addressed by the City Rail Link Notice of Requirement Built Heritage
Technical Expert Report undertaken under the prior NoR project phase and authored by Salmond
Reed Architects Limited (refer to Appendix K). The ‘extent of place’ has been defined for the
adjacent scheduled historic heritage places under the PAUP (within 20 m of the Britomart to Wyndham
section) identified in Table 4-1 (above).
The Britomart Station is to become a ‘through’ station as part of the development of the CRL and
therefore, earthworks associated with the cut and cover tunnel located within the building footprint are
proposed. The HIA identifies and quantifies issues associated with the construction of this phase of
the CRL, as they relate to regional resource consenting matters. With reference to other technical
appendices (refer to DCR, Appendix B and Assessment of Settlement Effects, Appendix D) the HIA
recommends mitigation options to control the potential effects.
The Assessment of Settlement Effects (refer to Appendix D) predicts potential settlement effects to be
“Negligible” due to the proposed underpinning works in a number of locations to remove existing piles
which conflict with the CRL tunnels. Further condition surveys are proposed to be undertaken, subject
to the owner’s approval, prior the commencement of the construction phase which will include interior
inspections. Building monitoring marks are also proposed (refer to Section 7.5.4 above).
Approximately 40 existing piles will be removed, with additional strengthening (underpinning works)
undertaken. The removal of these elements (piles) will not be visibly noticeable post-construction in
the general use of the building. The HIA finds that the proposed earthworks and underpinning works
that may affect the foundation structure will not affect or diminish the cultural heritage value of the
CPO and therefore the effects are considered to be minor.
Based on the proposed engineering design and construction methodologies contained within the DCR
(Appendix B) and Assessment of Settlement Effects (Appendix D), Salmond Reed Architects have
concluded that any potential effects on the CPO will be minor subject to the implementation of
monitoring and mitigation measures that have previously been discussed (refer to Section 7.5). This
includes monitoring before, during and after construction and undertaking building condition surveys.
Overall, it is considered that any potential adverse effects on the scheduled historic heritage CPO
building as a result of the proposed earthworks for which consent is sought can be appropriately
remedied and mitigated through the application of the previously identified monitoring and mitigation
measures imposed through proposed conditions, specifically the requirement for a M&CP (refer to
Appendix N for further detail).
12
In Appendix 9 of the PAUP where the ‘extent of place’ entry for a scheduled historic heritage place is annotated with a # symbol, no
geographic extent has been delineated for the place, therefore additional rules for a proposed activity may apply. The extent of place for
the CPO has been defined, no additional rules are applicable.
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7.13
Mana Whenua Values
Engagement with eight Mana Whenua groups who have self-identified an interest in the Britomart to
Wyndham section (outlined in Section 6.7 above) has been ongoing via the CRL Mana Whenua
Forum and targeted Project hui.
The PAUP, Part 3, Chapter G, Section 2.7.4, requires that a CIA be provided for resource consent
applications where the proposed works may have adverse effects on Mana Whenua values, such as
discharges to water, the Coastal Marine Area, air, land, the diversion and taking of groundwater and
the construction of significant infrastructure.
As part of the wider CRL project, during the Notice of Requirement (NoR) phase Mana Whenua
previously supplied Maori Values Assessments (MVAs) and a Cultural Values Assessment (CVA) was
also prepared. Relevant considerations with respect to the Britomart to Wyndham section matters
raised within these documents include works within scheduled site Ngahu Wera (ACDP:CA, Appendix
3, Schedule B, ID: 274 and PAUP, Appendix 4.1, ID: 015), works within proximity of scheduled site
Nga Wharau a Tako (ACDP:CA, Appendix 3, Schedule B, ID: 266 and PAUP, Appendix 4.1, ID: 009),
earthworks, stormwater and groundwater related effects.
In terms of Mana Whenua values and the Britomart to Wyndham section outcomes discussed at the
various hui, it was noted in particular that further consideration to the importance of protecting the
Hauraki Gulf from contaminants such as stormwater and improved water quality outcomes in the
catchment was a preferred outcome. Matters related to the management of earthworks and
groundwater are also understood to be important from a Mana Whenua values perspective.
In response, the design team has reviewed potential treatment options (including treatment measures
at depth or at the discharge point into the harbour). Some potential opportunities on a catchment basis
have also been presented by AC and the PTA as part of future works to Albert Street beyond the
scope of this application.
As an outcome of the various hui, Mana Whenua initially indicated that until such time that they could
review the resource consent application in full, the requirement for CIAs could not be confirmed.
Mana Whenua have now confirmed their preference for an independent consultant to review the
application on their behalf and to provide advice with respect to their interests. Consequently any
identification of effects on Mana Whenua values and associated mitigation measures is unable to be
confirmed at this time. Engagement with Mana Whenua groups is ongoing and any updates will be
supplied to AC as appropriate.
7.14
Summary of Effects
The construction of the Britomart to Wyndham section will facilitate the operation of the CRL project
which has a number of potential positive effects (outlined in Section 7.1 of the NoR AEE and
summarised in Section 7.2 of this document) such as increasing patronage on the Auckland rail
network and providing a sustainable transport system. The Britomart to Wyndham section also has
positive effects in its own right by improving stormwater quality originating from Albert Street and the
removal of some contaminated soil, particularly in the vicinity of Britomart Station.
Construction of the Britomart to Wyndham section has the potential to give rise to a range of
environmental effects within the immediate vicinity of the ACZs and CSAs and these have been
covered in the preceding assessment. AT proposes conditions as part of the resource consent
application in order to avoid, remedy or mitigate the adverse effects of the Britomart to Wyndham
section as appropriate. These conditions require a suite of management plans to be developed or
updated, including an overarching CEMP, which sets out the contact and communication
arrangements, site management procedures, health and safety, programme and environmental
management requirements (including all requisite management plans).
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It is considered that potential effects from ground settlement on buildings, heritage buildings,
structures and utilities can be appropriately mitigated by the implementation of a M&CP (a requirement
imposed through conditions of resource consent). Potential effects associated with erosion, soil
mobilisation, sedimentation to receiving water bodies and stormwater discharges will be temporary in
duration and will be appropriately avoided or mitigated via measures outlined in the DCR and Draft
ESCP, the latter being required through the proposed conditions of resource consent.
Although there was no contaminated soil found during investigations, a Draft CSMP has been
prepared to manage potential adverse human health and environmental effects during earthworks and
to also provide mitigation for unexpected discovery of contamination during earthworks. The Draft
CSMP also assumes volatile contaminants could be present in reclamation fill and sets out mitigation
measures if vapours are suspected. Proposed conditions require the Draft CSMP to be updated and
implemented by the Consent Holder.
While groundwater quality was assessed as good quality, the investigations were not sufficient enough
to provide confidence that the water to be disposed of into the stormwater system will be of high
quality. Consequently, a daily assessment of the water quality is proposed which will ensure that if
water quality does not meet the appropriate standards, it will be treated or collected in water tankers
and removed off-site for treatment and discharge. A targeted water quality monitoring programme has
been proposed as a condition of resource consent to ensure any potential effects can be appropriately
mitigated.
Dust created during excavation of the cut and cover tunnels has the potential to cause adverse effects
on sensitive land uses. However, it is considered that the implementation of the proposed conditions
relating to the preparation and approval of an AQMP outlining management and mitigation measures,
combined with continuous real time monitoring of dust at a number of representative locations
(ensuring the measures are effective), any potential adverse effects will be appropriately managed
and mitigated.
Standard construction mitigation measures will be required by way of conditions implemented through
an approved CEMP and a range of associated management plans as previously discussed (refer to
Appendix N). This will address and seek to avoid or minimise potential effects associated with the
management of earthworks, contamination, ground settlement, air quality and water quality. Once
completed, the Britomart to Wyndham section and its associated features will be predominantly
underground, and the CSAs will be reinstated to preconstruction levels.
Overall, it is concluded that the actual and potential effects of the construction of the Britomart to
Wyndham section of the CRL are able to be readily managed and mitigated.
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8 Statutory Assessment
8.1
Introduction
This section of the report assesses the Britomart to Wyndham section works against the key
provisions of the RMA in Section 8.2 and comments on other relevant legislation in Section 8.3. An
assessment of the proposed Britomart to Wyndham section against the relevant statutory policy
statements and plans is contained in Section 9.
8.2
Resource Management Act 1991
8.2.1
Introduction
The proposed Britomart to Wyndham section works must be consistent with the purpose and
principles of the RMA (or Act), as set out in Part 2 (sections 5 to 8) and have regard to matters in
section 104 of the Act.
8.2.2
Part 2 Purpose and Principles (sections 5 to 8)
Part 2 of the RMA outlines the purpose and principles of the RMA. Section 5 states:
(1) “The purpose of this Act is to promote the sustainable management of natural and physical
resources.
(2) In this Act, ‘sustainable management’ means managing the use, development, and protection
of natural and physical resources in a way, or at a rate, which enables people and
communities to provide for their social, economic, and cultural well-being and for their health
and safety while
(a) sustaining the potential of natural and physical resources (excluding minerals) to meet the
reasonably foreseeable needs of future generations; and
(b) safeguarding the life-supporting capacity of air, water, soil, and ecosystems; and
(c) avoiding, remedying, or mitigating any adverse effects of activities on the environment.”
The purpose of the RMA, as set out in section 5 of the Act, is to promote the sustainable management
of natural and physical resources.
The actual and potential effects on the environment are set out in Section 7 of this report. The
assessment concludes that the effects of the proposed Britomart to Wyndham section works will be
temporary in nature and can be managed via the measures outlined in Section 7. In particular,
construction mitigation measures will be implemented through an approved CEMP and a range of key
management and monitoring plans. These documents will address and seek to avoid or mitigate a
range of actual and potential effects associated with the Britomart to Wyndham section.
Section 6 of the RMA identifies matters of national importance which shall be ‘recognised and
provided for’. Section 7 of the RMA identifies other matters which ‘shall be had regard to’ under the
RMA. With regard to the Britomart to Wyndham section the following section 6 and 7 matters are
considered to be of relevance. They are:
“6(e) The relationship of Maori and their culture and traditions with their ancestral lands, water,
sites, waahi tapu, and other taonga.
6(f) the protection of historic heritage from inappropriate subdivision, use, and development.]
7(a)
kaitiakitanga:
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7(aa)
the ethic of stewardship:
7(b)
the efficient use and development of natural and physical resources:
7(c)
the maintenance and enhancement of amenity values:
7(d)
intrinsic values of ecosystems:
7(f)
maintenance and enhancement of the quality of the environment:”
In addition, section 8 of the RMA requires “all persons exercising functions and powers” under the Act
to take into account the principles of the Treaty of Waitangi (Te Tiriti o Waitangi).
A HIA has been prepared by Salmond Reed Architects Limited and is attached in Appendix J. A
summary of the findings of this assessment is provided in Section 7.14 of this report. The protection of
historic heritage therefore has been recognised and provided for in accordance with section 6(f) of the
RMA.
The Britomart to Wyndham section involves construction techniques and practices which have been
designed to minimise potential and actual adverse effects on the environment (discussed in Section 7
of this report). The Britomart to Wyndham section represents the efficient use and development of
natural and physical resources (section 7 (b)), the maintenance and enhancement of amenity values
(section 7 (c)) and maintenance and enhancement of the quality of the environment (section 7 (f)).
The proposed Britomart to Wyndham section will contribute to safe and efficient transport, which is
considered an efficient development of a physical resource in accordance with section 7 (b). Effects
on amenity values are considered to be temporary in nature, therefore, long term amenity values will
be maintained once construction is complete, in accordance with section 7 (c).
A CLA and a Draft CSMP have been prepared which will ensure that any actual and potential effects
on human health and the environment associated with contaminated land will be appropriately avoided
or mitigated. Therefore the maintenance and enhancement of the quality of the environment in
accordance with section 7 (f) of the RMA have been provided for and had regard to.
Consultation with Mana Whenua has been ongoing. Engagement with eight Mana Whenua groups
who have self-identified an interest in the Project (outlined in Section 6.7 above) has been ongoing via
the CRL Mana Whenua Forum and targeted hui. Key matters raised in consultation with Mana
Whenua include requirements around accidental discovery protocols, the need to cover all trucks
when moving earth, and the potential for use of alternative flocculants. These matters have been
addressed through suggested conditions included in this report as Appendix N. In addition, AT has
agreed to the appointment of an independent party to support the CRL Mana Whenua Forum in
reviewing resource consent applications made for the CRL project, including this application. AT will
“Dropbox” this application to the CRL Mana Whenua Forum members in its entirety following
lodgement.
Given the consultation that has been undertaken to date, it is considered that the requirements of
sections 6(e), 7(a), 7(aa) and 8 of the RMA have been provided for and had regard to. Ongoing
consultation and engagement will continue through all stages of planning and construction.
8.2.3
Sections 9 to 16
Section 9 of the RMA places restrictions on the use of land. Sections 9 (1), 9 (2) and 9 (3) of the RMA
state that no person may use land in a manner that contravenes a national environmental standard, a
regional rule or a district rule (i.e., rules that require resource consents to be sought), unless expressly
allowed by a resource consent or designation or the activity is an existing use.
As assessed in Section 5 of this report, relevant regional and proposed unitary plans do not provide
for earthworks, groundwater diversion and take, drilling of bores or holes, contaminated land
discharges, discharges to stormwater, air discharges as permitted activities. Therefore, the land use
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consents being sought by this application document are required under the RMA to authorise the use
of land associated with the Britomart to Wyndham section.
Section 14 of the RMA places restrictions on the taking, use, damming, or diversion of water. Section
14 (3)(a) states that a person is not prohibited from taking, using, damming, or diverting any water,
heat, or energy if it is expressly allowed by a national environmental standard, a rule in a regional plan
as well as a rule in a proposed regional plan for the same region or a resource consent.
As assessed in Section 5 of this report, the relevant regional plans do not provide for the diversion and
take of groundwater and drilling of holes or bores as a permitted activity. Therefore, a water permit is
being sought by this application document and is required under the RMA to authorise groundwater
diversion and take associated with the Britomart to Wyndham section.
Section 15 of the RMA places restrictions on the discharge of contaminants into the environment.
Section 15(1)(a) states that no person may discharge any contaminant or water into water unless that
discharge is expressly allowed by a national environmental standard or other regulation, a rule in a
regional plan or proposed regional plan or by a resource consent. Section 15(1)(b) places similar
restriction on discharges to land which may enter water, and Section 15(1)(c) places similar
restrictions on discharges into air from industrial or trade premises.
As assessed in Section 5 of this report the relevant ACRP: ALW and PAUP provisions do not provide
for discharges to air as a permitted activity. Therefore, the air discharge permit being sought by this
application document is required under the RMA to authorise the discharges of dust associated with
the Britomart to Wyndham section.
As assessed in Section 5 of this report the relevant ACRP: ALW and PAUP provisions do not provide
for discharges to the stormwater system as permitted activities. Therefore, the discharge permit being
sought by this application document is required under the RMA to authorise the discharges to
stormwater associated with the Britomart to Wyndham section.
As assessed in Section 5 of this report the relevant ACRP: ALW and PAUP provisions do not provide
for the discharges of contaminants from disturbing soil on land containing elevated levels of
contaminants or for the discharges of contaminants from land containing elevated levels to land or
water as permitted activities. Therefore, the discharge permits being sought by this application
document are required under the RMA to authorise the discharges from contaminated land associated
with the Britomart to Wyndham section.
8.2.4
Section 95 Notification
Sections 95 to 95F of the RMA set out the requirements in relation to public notification and limited
notification of resource consent applications. The applicant requests notification pursuant to section
95A(2)(b). Details of consultation with affected parties and the wider public is contained in Section 6 of
this report.
8.2.5
Section 104 to 107 Considerations
For any resource consent application, section 104 of the RMA requires the consent authority, in
making decisions, to have regard to:


The actual and potential effects on the environment of allowing the activity (section 104(1)(a));

Any other matters considered relevant or necessary to consider (section 104(1)(c)).
The relevant provisions of any national standard, other regulation, national policy statement, coastal
policy statement, regional policy statement or proposed regional policy statement, plan or proposed
plan (section 104(1)(b)); and
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The actual and potential effects associated with the Britomart to Wyndham section have been
assessed in Section 7 of this document (section 104(1)(a)).
Given the requirements of section 104(1)(b), relevant statutory documents need to be assessed in
relation to the activities for which resource consents are being sought. On this basis, the statutory
documents of relevance to this application, which are assessed in Sections 9.2 to 9.3, are:




Auckland Regional Policy Statement 1999 (ARPS).

Proposed Auckland Unitary Plan 2013 (PAUP).
Auckland Council Regional Plan: Air, Land, Water 2013 (ACRP: ALW).
Auckland Council Regional Plan: Sediment Control 2001 (ACRP:SC).
Resource Management (National Environmental Standard for Assessing and Managing
Contaminants in Soil to Protect Human Health) Regulations 2011 (NESsoil).
As outlined earlier in this report, the overall activity status for the activities requiring resource consent
is a discretionary activity. Under section 104B, in determining a discretionary activity application, a
consent authority may grant or refuse the application; and if it grants the application, may impose
conditions under section 108 (refer to Section 8.2.8 below).
8.2.6
Section 105 Matters relevant to certain applications
Section 105(1) of the RMA provides for matters that consent authorities must have regard to when
considering applications to discharge. The proposal involves discharges that require a discharge
permit to do something that would contravene section 15 and therefore section 105(1) applies.
Section 105(1) requires consideration of:

An assessment of the discharges and the sensitivity of the receiving environment to adverse effects
(section 105(1)(a));

The applicant’s reasons for the proposed choices in relation to the discharges (section 105(1)(b));
and

Any possible alternative methods of discharge, including discharge into any other receiving
environment (section 105(1)(c)).
The nature of the discharges has been described in Section 3.14 and Section 7 of this report and the
sensitivity of the receiving environment has been discussed in Section 4 and Section 7 of this report.
The reasons for the proposed choices in relation to the discharges has been discussed in Section 3.14
of this report.
Possible alternative methods of discharge are discussed in Section 3.14 of this report.
8.2.7
Section 107 Matters Relevant to discharge permits
Section 107 of the RMA is also of relevance to the discharge permits for the discharges to land and
water from contaminated land and disturbance of contaminated soil.
Under section 107 (1) of the RMA, a consent authority shall not grant the discharge permit if the
discharge, after reasonable mixing, gives rise to the following effects in the receiving water:
(c) “the production of any conspicuous oil or grease films, scums or foams, or floatable or
suspended materials:
(d) any conspicuous changes in the colour or visual clarity:
(e) any omission of objectionable odour:
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(f) the rendering of fresh water unsuitable for consumption by farm animals:
(g) any significant adverse effects on aquatic life”
The effects of the discharges to groundwater and the stormwater system are assessed in the Water
Quality Assessment (Appendix F) and the CLA (Appendix E) of this report. As an overview, given
the control mechanisms that are in place (outlined in the Draft CSMP, contained within Appendix E),
the discharge will not result in any effects identified in section 107(c) to (d) and (g). The effects
identified in section 107 (e) and (f) are not relevant.
8.2.8
Sections 108, 123 and 125 Conditions and Consent Duration
In accordance with section 108, suggested consent conditions are provided in Appendix N and
summarised in Section 10 of this report.
Section 123 defines the period for which consents may be granted. Under section 123(b) the period
for which any land use consent (apart from reclamation) is granted is unlimited, unless otherwise
specified in the consent.
Section 123 sets an upper limit of 35 years for discharge and water permits. Section 123(d) limits
discharge and water permits to five years unless an alternative duration is specified in the consent.
Subject to section 125(1), a resource consent lapses on the date specified on the consent. If no date
is specified, under section 125(1)(a) the discharge permits, water permits and land use consents
sought will lapse 5 years after the commencement of the consent.
As outlined in Section 3.12 of this report, the Britomart to Wyndham section construction is estimated
to take 3 years and 8 months, expected to commence in September 2015 and finish in March 2019.
However, the CRL designations have been granted a lapse period of 15 years, from the date on which
they are confirmed. The CRL designations are currently subject to six Environment Court appeals and
therefore have not yet been confirmed. If the CRL project were delayed, for example due to
unresolved appeals, then the Britomart to Wyndham section may also be delayed. Permanent
groundwater diversions will occur within Lower Queen Street.
Therefore AT request that under section 123(b) the duration of the land use consents being sought is
unlimited and under section 123(d) the duration of the discharge and water permits being sought is 35
years. Further, it is requested that the lapse period for all resource consents sought is 15 years.
8.2.9
Section 139 Certificates of Compliance
CoCs are being sought pursuant to section 139 of the RMA which sets out the requirements for CoC
applications.
It is considered that the following activities are permitted and can be carried out lawfully without
resource consent:





Discharge of treated sediment laden water from any earthworks allowed by a resource consent.
Discharge of stormwater from redeveloped existing impervious surfaces.
Discharge of stormwater from the redevelopment of existing, high use public roads.
Use of land for the purposes of Industrial or Trade Activities.
Installation of below ground infrastructure within the 1 per cent AEP flood plain.
Assessment of these activities in relation to the permitted activity rules are provided in Section 5 of this
report and through the assessments provided in Section 7. On this basis, the requirements of section
139(1) of the RMA are met.
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With reference to section 139(8) of the RMA, while activities relating to earthworks and land
disturbance under the ACRP: SC, Rule 5.4.1.1 are deemed to be permitted, CoCs are not being
sought for these activities due to the status of these activities in the PAUP. All remaining activities
specified, and for which CoCs are being sought, are able to be undertaken lawfully. In addition, there
are no applicable national environmental standards that must be considered in accordance with
section 139(10)(a). It is acknowledged that the CoCs requested would be subject to the conditions
specified in the permitted activity rules in accordance with section 139(10)(b).
Therefore, in accordance with section 139(5) of the RMA it is requested that the CoCs be issued by
AC.
8.3
Heritage New Zealand Pouhere Taonga Act 2014
Potential effects on archaeology were assessed under the prior NoR phase of the CRL project.
Further to this, an Archaeological Authority from Heritage NZ will be sought concurrently to resource
consent for the Britomart to Wyndham section.
8.4
Summary of Statutory Assessment
The actual and potential effects on the environment of the Britomart to Wyndham section will be
temporary in nature and can be managed via the measures outlined in Section 7. As an integral part
of the wider CRL project and Auckland’s transport network, the Britomart to Wyndham section will
enable people and communities to provide for their social, economic, and cultural well-being and for
their health and safety, consistent with the purpose of the RMA. Overall the proposed works are
considered to achieve the purpose of the RMA. An Archaeological Authority from Heritage NZ will be
sought for the Britomart to Wyndham section under the HNZPT Act.
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9 Relevant Planning
Documents
9.1
Introduction
This section of the report assesses the Britomart to Wyndham section against the relevant provisions
of the following statutory policy statements and plans:

Resource Management (National Environmental Standard for Assessing and Managing
Contaminants in Soil to Protect Human Health) Regulations 2011 (NESsoil).




Auckland Regional Policy Statement (ARPS).
Auckland Council Regional Plan: Air, Land, Water (ACRP: ALW).
Auckland Council Regional Plan: Sediment Control (ACRP: SC).
Proposed Auckland Unitary Plan (PAUP).
Other legislative provisions relevant to the Britomart to Wyndham section are discussed in Section 8.3.
9.2
National Environmental Standard for Assessing and
Managing Contaminants in Soil to Protect Human Health
The NESsoil:


Provides a nationally consistent set of planning controls and soil contaminant values; and
Ensures that land affected by contaminants in soil is appropriately identified and assessed before it
is developed and if necessary the land is remediated or the contaminants contained to make the
land safe for human use.
AC is required to give effect to and enforce the requirements of the NESsoil.
Under the NESsoil regulations, land is considered to be actually or potentially contaminated if an
activity or industry on the Ministry for the Environment (MfE) HAIL has been, is, or is more likely than
not to have been, undertaken on that land. These regulations apply to the works comprising the
proposed Britomart to Wyndham section as disturbing soil is covered by sub-clause 5(4) of the NES
and the site is included as item H on the HAIL List.
Results of the laboratory soil analysis contained in the CLA are below the NESsoil permitted
contaminant standards. However, the investigations were limited in scope and therefore it cannot be
said with confidence whether the soil contamination does or does not exceed the applicable standard
in regulation 7. Therefore the following land use consent is being sought:

A land use consent to disturb soil pursuant to Regulation 11 (discretionary activity) of the NESsoil.
The NESsoil sets out controls and standards to manage soil disturbance on contaminated and
potentially contaminated land. There are no matters of discretion under Regulation 11. However, a
draft CSMP (contained within Appendix E) has been prepared to support a Discretionary Activity
consent application under the NESsoil. The CSMP outlines the soil management protocols. It is
considered that the CLA and draft CSMP provide adequate information for AC to assess the matters
of discretion.
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9.3
Auckland Regional Policy Statement
The ARPS became operative on 31 August 1999. The focus of the ARPS is the management, use,
development, and protection of natural resources of the Auckland Region. The aim of the ARPS is to
achieve certainty through integrated, consistent and coordinated management of Auckland Region’s
resources.
The Chapter 2 (Regional Overview and Strategic Direction), Chapter 3 (Matters of Significance to Iwi),
Chapter 4 (Transport), Chapter 6 (Heritage) Chapter 8 (Water Quality), Chapter 9 (Water Conservation
and Allocation) Chapter 10 (Air Quality) and Chapter 17 (Contaminated Sites) are of particular
relevance to the Britomart to Wyndham section.
Chapter 2, Strategic Policy 2.6.14 recognises that regionally significant infrastructure is essential for
the community’s social and economic wellbeing, but that regionally significant resources can give rise
to adverse effects. The Britomart to Wyndham section is considered consistent with these provisions
as the CRL tunnels will provide a safe and efficient means of public transport which supports the
existing and future well-being of CBD residents and businesses and the wider Auckland region.
Chapter 3, Objectives 3.3.1 to 3.3.3 and Policy 3.4.1 aim to involve Tangata Whenua in resource
management processes, sustain the mauri of natural and physical resources in ways which enable
provision for the social, economic and cultural wellbeing of Maori and seek to give protection to waahi
tapu and other ancestral taonga of special value to Tangata Whenua. As outlined in Sections 6.7 and
7.15, although identification of effects on Mana Whenua values cannot be confirmed at this time,
engagement with Mana Whenua is well established through the CRL Mana Whenua Forum and will
continue throughout the consenting and construction phases of both the Britomart to Wyndham
section and the wider CRL project. This will assist in ensuring that the objectives and policies in
Chapter 3 are met.
Chapter 4, Objectives 4.3.1, Policies 4.4.1, 4.4.4 and 4.4.7 relate to the development of a transport
network that supports a compact sustainable urban form. The Britomart to Wyndham section will
enable the development of the CRL project, which will improve the public transport system and is
consistent with the objectives and policies of Chapter 4.
Chapter 6 Objectives 6.3.1 and 6.3.2 and Policies 6.4.1, 6.4.4 and 6.4.16 seek to protect, maintain
and enhance a diverse range of the region’s heritage resources while enabling utilisation of and
access to these resources. The Britomart to Wyndham section will involve earthworks and land
disturbance within a scheduled historic heritage place (CPO building) to enable the construction of the
CRL tunnels through the western end of Britomart Station. The HIA prepared by Salmond Reed
Architects (Appendix J) has concluded that any potential effects on the CPO will be minor subject to
the implementation of monitoring and mitigation measures that have previously been discussed (refer
to Section 7.5) in addition to the proposed design and construction methodologies. Therefore it is
considered that potential adverse effects on heritage resources arising during construction from
earthworks within the CPO can be appropriately managed.
Chapter 8, Objective 8.3 seeks to maintain or enhance water quality. Policy 8.4.1 aims to avoid the
adverse effects on water quality caused by the discharge of contaminants, and Policy 8.4.7 seeks the
adoption of appropriate methods to avoid or mitigate the adverse effects of urban stormwater runoff on
aquatic receiving environments. In particular, Policy 8.4.7.3 seeks to ensure that land disturbance
activities which may result in the discharge of sediment, shall be carried out so that adverse effects
can be avoided, remedied or mitigated. Policy 8.4.10 intends that all industrial, trade and rural
production and processing activities shall be carried out in a manner which prevents, wherever
practicable, the adverse effects of discharges and wastes. Policy 8.4.24 proposes that Māori cultural
and traditional values shall be recognised and provided for in the management of water quality. It is
considered that the actual and/ or potential effects associated with soil disturbance will be temporary
in duration and will be appropriately remedied or mitigated by the implementation of various erosion
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and sediment control measures outlined through the development of a detailed ESCP. In addition, the
implementation of the CSMP will ensure that any actual and potential effects on human health and the
environment associated with contaminants found in the soil will be appropriately avoided or mitigated.
Furthermore, water collected, treated and discharged to the stormwater system will be treated via
settlement tanks to the quality requirements detailed in the ACRP: ALW and the PAUP. Water not
achieving the required standard will be disposed of off-site in an appropriate trade waste facility.
Chapter 9, Objective 9.3 and Policies 9.4.1, 9.4.4, 9.4.7 and 9.4.10 are considered of particular
relevance to the proposal. They aim to maintain water levels and flows of aquifers and seek to ensure
that aquifer temperatures and levels are not adversely affected by the taking, use, damming or
diversion of groundwater. It is considered that the groundwater diversion and take associated with the
Britomart to Wyndham section will not adversely affect aquifers.
Chapter 10, Objective 10.3 aims to avoid, remedy, or mitigate deterioration of air quality in the
Auckland region, while Policy 10.4.1 aims to minimise the cumulative adverse effects on air quality
from pollutants, including particulates. Objective 10.4.7 states that adverse effects due to discharges
to air from industrial and trade premises will be minimised and shall be monitored to demonstrate
compliance with regional rules, regulations or conditions of resource consents. It is considered that
potential adverse effects on air quality arising during construction from the generation of the dust from
earthworks can be appropriately managed.
With respect to Chapter 17, Objective 17.3 and Policy 17.4.1.3 are considered of particular relevance
to the proposal. Objective 17.3 aims to remedy or mitigate any adverse effects of existing
contaminated sites, while Policy 17.4.1.3 seeks to ensure that remediation standards for a
contaminated site are consistent with the existing and likely future use of the site and shall consider
the risk to the environment posed by the site. All fill material encountered during the Britomart to
Wyndham section will be disposed of at a managed fill facility. No contaminated material encountered
will be left insitu.
The proposed Britomart to Wyndham section works are required to commence the construction of the
CRL project. Any potential adverse effects can be appropriately avoided, remedied or mitigated. The
works are consistent with the ARPS overall and support the key provisions relating to the provision of
infrastructure.
9.4
Auckland Regional Plan: Sediment Control
The ACRP: SC addresses the issues of elevated sediment generation and discharge from areas
subject to land disturbance. The plan seeks to promote the sustainable use of soils throughout the
region. Relevant chapters are Chapter 5: Regulation and Chapter 7: Minimum Earthwork Strategies.
Earthworks are required for the Britomart to Wyndham section in order to form the trenches in which
3
the CRL tunnels will be constructed. These earthworks will comprise a total volume of 143,000m of
3
cut and 82,000m of fill. The area of earthworks which lies with the Sediment Control Protection Area
(100m landward of the coastal marine area, measured from the northern boundary of Quay Street),
2
has an area of 4,200 m and therefore requires consent under the ACRP: SC.
Section 9.4.1 assesses the relevant policies and objectives of the ACRP: SC, and Section 9.4.2
outlines the matters of discretion for the following resource consent pursuant to the ACRP:SC:

A land use consent for land disturbing activities, including earthworks pursuant to Rule 5.4.3.1
(restricted discretionary activity) of the ACDP: SC is sought.
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9.4.1
Objectives and Policies of the ACRP: SC
Chapter 5 – Regulation
Chapter 5 of the ACRP: SC addresses the regulation of land disturbing activities and how this should
be managed with regard to sediment generation. Of relevance are objectives 5.1.1 and 5.1.2 which
refer to the maintenance and enhancement of water quality and the sustaining of the mauri of water in
water bodies. Policies 5.2.1, 5.2.2 acknowledge land disturbing activities will result in the generation
and discharge of elevated levels of sediment and that methods are to be employed to ensure the
adverse effects on water bodies are avoided, remedied or mitigated.
Section 7 – Minimum Earthworks Strategies
Chapter 7 of the ACRP: SC identifies minimum expectations for erosion and sediment generation
associated with land disturbing activities. Objectives 7.1.1 and 7.1.2 and policies 7.2.1 and 7.2.2
emphasise the minimising the risk through the size of area exposed to earthworks and the duration of
the earthworks period. The policies emphasise the need for implementation of strategies to limit
sediment generation.
Effects from construction of the Britomart to Wyndham section will largely be temporary in nature and
will be mitigated by the implementation of a CEMP and an ESCP. The ESCP will implement
containment, settlement and stabilisation measures to ensure sediment laden water does not reach
water bodies.
9.4.2
Matters of Discretion for Land Disturbing Activities
In terms of land disturbing activities, Rule 5.4.3.2 sets out the matters that AC will restrict its discretion
to when considering this application for a restricted discretionary activity. The relevant matters relate
to:

Techniques used to restrict or control sediment being transported from the site and the effects or
impacts of sediment on water quality from the techniques chosen, including the practicality and
efficiency of the proposed control measures;







The proportion of the catchment which is exposed;
The proximity of the operation to the receiving environment;
The concentration and volume of any sediment that may be discharged;
The time during which the bare earth surface is exposed;
The time of year when the activity is undertaken;
The duration of the consent;
Monitoring the volume and concentration of any sediment that may be discharged.
These matters have been assessed in Section 7.3 of this report.
9.5
Auckland Regional Plan: Air Land and Water Plan
The ACRP: ALW became operative on 30 September 2013. The ACRP: ALW provides for the
management of air, land and water resources in the Auckland region.
Section 9.5.1 assesses the relevant policies and objectives of the ACRP: ALW, and Sections 9.5.2 to
9.5.6 outline the relevant matters of control, matters of discretion and assessment criteria for the
resource consents and certificates of compliance being sought pursuant to the ACRP: ALW (refer to
Section 1.4.1 and 1.4.2 for the approvals sought).
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9.5.1
Objectives and Policies of the ACRP: ALW
The Chapter 2 (Values), Chapter 4 (Air Quality), Chapter 5 (Discharges to Land and Water) and
Chapter 6 (Water Allocation) are of particular relevance to the Britomart to Wyndham section.
Chapter 2 – Values
Chapter 2 deals with the use, development and protection of air, land and water resources that have
environmental, social, economic and/or cultural value to the Auckland Community. Of particular
relevance is Objective 2.2.3.4 which aims to provide for physical infrastructure which supports the
economic, social and cultural wellbeing of the Region’s people and communities and provides for their
health and safety, while avoiding, remedying or mitigating adverse effects on the environment.
Policy 2.2.4.1 states that the use and development of air, land and water within Urban shall be
considered appropriate where it is consistent with the strategic directions of the ARPS or with the
Auckland Regional Growth Strategy, while Policy 2.2.4.8 states the positive social, economic and
cultural effects and benefits arising from any proposal for use and development shall be considered
when assessing the overall effects of a proposal on air, land or water resources. Policy 2.2.4.4 states
the use, development, upgrading or maintenance of network utility infrastructure shall be considered
appropriate where consistency with the ARPS and ARGS is achieved; environmental outcomes are
improved; the work is undertaken in a cost effective manner and significant adverse effects are
addressed.
The Britomart to Wyndham section will begin the construction of the CRL project, which will enable
people and communities to provide for their social, economic, and cultural well-being and for their
health and safety. Effects from construction will largely be temporary in nature, and will be mitigated
by the implementation of a CSMP, CEMP and an ESCP.
Also of relevance are Policies 2.2.4.16 and 2.2.4.17 which aim to consider any effects on sites,
buildings, places or areas which have cultural heritage values. Measures will be implemented to
ensure the protection of these places. A HIA has been undertaken in relation to the proposed
earthworks activities within the CPO building, as outlined in Section 7.14 of this report (Appendix J)
and concludes that any potential adverse effects on these heritage items can be appropriately
remedied and mitigated. An Archaeological Authority from Heritage NZ will be sought concurrently to
resource consent for the Britomart to Wyndham section.
Policy 2.3.4.2 which aims to avoid, remedy or mitigate adverse effects on sites and areas of special
value to tangata whenua. Consultation with Mana Whenua is ongoing, with a CIA currently being
prepared on behalf of the CRL Mana Whenua Forum (see Section 6.7 above).
Chapter 4 – Air Quality
Chapter 4 deals with the discharge of contaminants to air. Of particular relevance is Objective 4.3.2
which aims to avoid, remedy or mitigate adverse effects from the discharge of contaminants into air on
human health, amenity and the environment and Objective 4.3.5 which aims to avoid reverse
sensitivity conflict from the discharge of contaminants into air where sensitive activities that have
differing air quality expectations are located in close proximity to activities that discharge contaminants
into air.
These objectives are supported by Policies 4.4.5 to 4.4.31, in particular Policy 4.4.5 which states that
the discharge of contaminants into air shall be considered inappropriate where it causes, or is likely to
cause, noxious, dangerous, offensive or objectionable odour, dust, particulate, smoke or ash, or
visible emissions beyond the boundary of the premises on which the discharge is occurring or causes,
or is likely to cause, adverse effects on human health or the environment, beyond the boundary of the
premises on which the discharge is occurring. While appropriate measures will be undertaken to
minimise the potential offensive or objectionable dust beyond the boundary, resource consent is being
sought as a precautionary measure.
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Policy 4.4.15 states that in assessing the effects of discharges of contaminants into air, particular
regard shall be had to adverse effects on the environment, including amenity, human health and
property, the methods to avoid or minimise adverse effects on the environment; the location of the
activity and the proximity of other activities sensitive to the discharges and any cumulative adverse
effects on the environment. These matters have been taken into account in AQA contained in
Appendix H.
Chapter 5 – Discharges to Land and Water, and Land Management
Chapter 5 deals with the discharge of contaminants into water, or onto or into land. Section 5.3
contains objectives, while Section 5.4 contains policies which aim to protect, maintain or enhance the
quality of land and water. Of particular relevance to the proposed discharges to the stormwater system
is Objective 5.3.5 which aims to prevent or minimise the adverse effects of stormwater and wastewater
discharges, and Objective 5.3.8 which provides for discharges associated with stormwater and
wastewater provided the Best Practicable Option (BPO) is undertaken to manage adverse effects on
the environment. It is considered that the proposed treatment methods and decision making process
associated with the stormwater and wastewater will be the BPO.
Of particular relevance to the disturbance of potentially contaminated soil is Objectives 5.3.14, 5.3.15
and 5.3.16 and Policy 5.4.37A which recognise the need to manage that land containing elevated
levels of contaminants in order to protect the environment and human health. It is considered that by
implementing the procedures outlined in the CSMP, contaminated soil and groundwater will be
managed appropriately and risks to human health and the environment will be mitigated during the
realignment works.
Chapter 6 – Water Allocation
Chapter 6 deals with water quantity and allocation. Section 6.3 contains objectives, while Section 6.4
contains policies which aim to protect and maintain water availability for consumptive use, to enhance
access to water resources and to minimise wastewater generation. The issues associated with
diversion and take of groundwater and drilling are the most relevant in this chapter. Of particular
relevance to groundwater diversion and take is Objective 6.3.8 and Policy 6.4.49 which aims to enable
people and communities to divert groundwater while avoiding, remedying or mitigating adverse effects
on groundwater regimes, surface water bodies, neighbouring structures and services and on people
and communities. Of relevance is Objective 6.3.4 and Policy 6.4.26 which aims to provide for drilling
activities and on-going use of bores while maintaining the quality of the Auckland Region’s
groundwater and avoiding damage to the values of heritage sites, buildings, places or areas. As stated
in Section 7.4 of this report, groundwater inflow into the excavations and dewatering will be monitored.
As stated in Section 7.5, 16 buildings along the Britomart to Wyndham section of works have been
identified as potentially being subject to ‘Very Slight’ and ‘Slight’ building damage as a result of
potential settlement effects. The implementation of the Monitoring and Contingency Plan and
proposed monitoring system by the contractor will appropriately avoid, remedy and mitigate any
potential or actual adverse surface settlement or damage to buildings.
9.5.2
Matters of Control for Drilling a Hole or Bore
Rule 6.5.27 lists the matters that AC will exercise its control under Rule 6.5.26 with respect to the
drilling of a hole or bore that does not comply with Rule 6.5.19(d), (e), or (f), or Rule 6.5.21(d):




The location and design of the bore, including depth, and the design of the headworks;
The provision for bore identification;
The monitoring and reporting requirements;
Monitoring; and
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The duration and review of the consent.
These matters have been taken into account when assessing the effects in Section 7.4 and in the
Groundwater Effects Assessment contained in Appendix C.
9.5.3
Matters of Discretion for Air Discharge Permit
In terms of the discharges of contaminants to air from construction activities, Rule 4.5.24 lists the
matters for discretion relating to Rules 4.5.56:



The requirement to discharge and consideration of alternatives;



The location of the discharge;
The quantity, quality and type of discharge and any effects arising from that discharge;
The methods to minimise the discharge and to avoid, remedy or mitigate any adverse effects of the
discharge;
Monitoring; and
The duration and review of the consent.
In considering the discharge of contaminants into air from earthworks from construction of the
Britomart to Wyndham section, including the reinstatement of roads and footpaths, Rule 4.5.56 states
that in order to minimise dust emissions, earthworks or road works that require a restricted
discretionary activity consent under Rule 4.5.56 a Dust Management Plan may be required or the
undertaking of video or total suspended particulate monitoring. An Air Quality Management Plan is
contained in Appendix H.
These matters have been taken into account when assessing the Air Quality effects in Section 7.11 in
the alternatives discussion in Section 3.13, and in the AQA contained in Appendix H.
9.5.4
Matters of Discretion for Discharge Permit from Contaminated Land
and Disturbance of Contaminated Land
In terms of the discharge of contaminants to land or water from land containing elevated levels of
contaminants that does not comply with the standards and terms of Rule 5.5.44, Rule 5.5.44A sets out
matters over which AC will exercise its discretion when considering this application for a restricted
discretionary activity.
The matters of discretion relate to:






The particular matter of non-compliance with the standards and terms of Rule 5.5.43 or Rule 5.5.44;

Site Validation Report (SVR) for the land prepared in accordance with the requirements of Rules
5.5.43 and 5.5.44;

The duration of the consent; and
Methods to avoid adverse effects on potable water supplies;
Methods to control vapour migration;
Preparation and implementation of a Monitoring and Management Plan (referred to as the CSMP);
Methods to avoid adverse effects on potable water supplies and control vapour migration;
The preparation, adequacy and implementation of an SIR (referred to as the CLA) an environmental
and human health risk assessment, a Remedial Action Plan (RAP) (referred to as the CSMP);
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The timing and nature of reviews of consent conditions
These matters have been assessed in the CLA contained in Appendix E and summarised in Section
7.7 of this report.
9.5.5
Matters of Discretion for Diversion of Groundwater
In terms of the diversion of groundwater, Rule 6.5.77 sets out assessment criteria that AC will use
when considering this application for a restricted discretionary activity. Rule 6.5.43 (the taking of
groundwater for the purposes of groundwater diversion) states that AC will restrict its discretion to the
matters listed in Rule 6.5.77 of the ACRP: ALW. The relevant matters relate to:




The effects on the flow regime required for the life-supporting capacity of waterbodies;



Discharge of groundwater containing sediment and other contaminants;
Any adverse effects on existing lawful groundwater users, building owners;
The potential for adverse effects arising from surface flooding;
Cumulative effects that may arise from the scale, location and/or number of groundwater diversions
in the same area;
Any adverse effects on the heritage values of sites, including archaeological significance; and
Any adverse effects on ecosystem habitat, both terrestrial and freshwater.
These matters have been assessed in Sections 7.4, 7.5, 7.7 of this report.
9.6
Proposed Auckland Unitary Plan
The PAUP was notified for submissions on 30 September 2013. In accordance with section 86B of
the RMA, a number of the rules (as identified by grey shading within the PAUP) have immediate effect
from notification. Although this is the case, until the Auckland Unitary Plan is fully operative, the
operative district plans and regional plans for Auckland continue to have legal effect.
Under the PAUP, the site is zoned “Road” and “Business- City Centre”. Sections 9.6.1 to 9.6.5 assess
the relevant policies and objectives of the PAUP, and Sections 9.6.6 to 9.6.10 outline the relevant
matters of control, matters of discretion and assessment criteria for the resource consents and
certificates of compliance being applied for under the PAUP (refer to Section 1.4.1 and 1.4.2 for the
approvals sought).
9.6.1
Part 1, Chapter B – Regional Policy Statement
Part 1, Chapter B of the PAUP contains the regional policy statement provisions and identifies eight
issues of regional significance for resource management in Auckland. Each issue has objectives and
policies to achieve the outcomes, priorities and associated strategic directions in the Auckland Plan.
Issue 2 (Enabling economic well-being), Issue 3 (Protecting our historic heritage, special character
and natural heritage), Issue 4 (Addressing issues of significance to Mana Whenua) and Issue 5
(Sustainably managing our natural resources) are all of relevance to the Britomart to Wyndham
section .
Issue 2, Policy 3.2.1 and Policy 3.2.8 recognises that regionally significant infrastructure is essential
for the community’s social and economic wellbeing, but that regionally significant resources can give
rise to adverse effects. The Britomart to Wyndham section is consistent with the objectives and
policies of Issue 2.
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Issue 3, Policies 4.1.1 to 4.1.12 recognises the importance of identifying and protecting Auckland’s
significant historic heritage places, while Policies 4.3.3.1 to 4.3.3.5 seek to protect trees and
vegetation which contribute to Auckland’s cultural and natural heritage, indigenous biodiversity and the
provision of ecosystem services. The Britomart to Wyndham section is consistent with the objectives
and policies of Issue 3.
Issue 4, Policy 5.1.2 seeks to enable Mana Whenua to exercise Tino Rangatiratanga through
participation in resource management processes and decisions, Policy 5.2.4 aims to promote the
preparation of a cultural impact assessment for activities that may adversely affect the values of Mana
Whenua and Policy 5.4.4 seeks to protect the values and associations of Mana Whenua with their
sites and places of significance or value. The Britomart to Wyndham section is consistent with the
objectives and policies of Issue 4.
Issue 5, Policy 6.3.9 seeks to minimise and manage sediment discharges into surface water bodies
and coastal water by requiring land disturbing activities to be designed and undertaken to retain
sediment on land as far as practicable, limit the area of land being disturbed at any one time, and use
industry best practices and standards appropriate to the nature and scale of the land disturbing activity
and the sensitivity of the receiving environment to minimise sediment discharges. Also, with respect to
Issue 5, Objective 6.5.1 seeks to protect human health and the quality of air, land and water resources
in Auckland by identifying, managing and remediating of land containing elevated levels of
contaminants. The Britomart to Wyndham section is consistent with the objectives and policies of
Issue 5.
The objectives and policies of the Regional Policy Statement of the PAUP continue through to more
specific parts of the PAUP. These are addressed further in Sections 9.7.2 to 9.7.10 below.
9.6.2
Part 2, Chapter C - Auckland-Wide Objectives and Policies
Section 1.1 – Infrastructure
Part 2, Chapter C, Section 1.1 and to a lesser extent Section 1.2 of the PAUP outline the objectives
and policies in relation to infrastructure and transport. In particular, Objective 1.1.3 is relevant, which
states safe, efficient and secure development, operation and upgrading of infrastructure is enabled, to
service the needs of existing and planned use and development. The construction of the CRL tunnels
represents a significant upgrade in public transport infrastructure for Auckland and will support the
functioning of communities, business, industry and economic growth of the region. Providing secure
and sufficient infrastructure is essential to the health, safety and well-being of people and communities
– and significantly contributes to a well-functioning and liveable Auckland. As demonstrated in Section
7 of this report, any actual and potential adverse effects on the environment can be appropriately
mitigated. The Britomart to Wyndham section is consistent with the objectives and policies of Section
1.1.
Section 3 – Historic Heritage
Part 2, Chapter C, Section 3 of the PAUP outlines the objectives and policies in relation to historic
heritage which are not scheduled in the Unitary Plan. In particular, Policy 3.1 is relevant, as it aims to
manage effects on historic heritage places by undertaking appropriate measures to avoid, remedy or
mitigate adverse effects on significant historic heritage. Archaeological historic heritage will be
managed through the implementation of an Accidental Discovery Protocol. As outlined in Section
5.1.11 and the City Rail Link Notice of Requirement Built Heritage Technical Expert Report (Appendix
K) potential effects on adjacent historic heritage buildings along the Britomart to Wyndham section of
works have been assessed as subject to potential settlement effects, which will be monitored for any
potential or actual building damage. The proposed methods of mitigation through the CEMP and the
Contingency and Monitoring Plan of any actual or potential adverse effects on historic heritage
associated with the works are consistent with the objectives and policies of Section 3.
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Section 5.1- Air Quality
Part 2, Chapter C, Section 5.1 of the PAUP outlines the objectives and policies in relation to air
quality. Objective 5.1.2 and 5.1.3 and Policies 5.1.1, 5.1.12 and 5.1.13 are particularly relevant to
proposed construction activities. Objective 5.1.2 states that air discharges are reduced to protect
public health and amenity, and to meet national and AAAQS. Objective 5.1.3 aims to ensure human
health, amenity values, property and environment are protected from significant adverse effects of air
contaminants. Policy 5.1.1 seeks to protect human health by ensuring air discharge do not exceed
specified levels. Policy 5.1.12 seeks to avoid or minimise adverse effects from air discharges by
adopting a precautionary approach, using best management practices and best practicable option.
Policy 5.1.13 seeks to avoid significant adverse effects from air discharges beyond the boundary of
the premises where the discharge is occurring, including offensive or objectionable effects on amenity
values from odour, dust, particulate matter, smoke, ash, fumes and visible emissions. The discharges
of contaminants to air are subject to an Air Quality Management Plan which will detail the containment
of dust and ongoing continuous monitoring to ensure the effectiveness of those control measures.
Therefore, the Britomart to Wyndham section is considered to be consistent with Objectives 5.1.2 and
5.1.3, and Policies 5.5.5, 5.1.12 and 5.1.13.
Section 5.2 – Earthworks
Part 2, Chapter C, Section 5.2 of the PAUP outlines the objectives and policies in relation to
earthworks. Objectives 5.2.1, 5.2.2 and 5.2.3 seek to ensure that earthworks are undertaken in a
manner that protects people and the environment, the risk of natural hazards is not increased by
earthworks, and sediment generation from earthworks is minimised. Policy 5.2.2 is particularly
relevant as it aims to manage earthworks by the use of best sediment and erosion control practices,
and best industry practices and standards for on-site sediment treatment or removal methods. Policy
5.2.3 seeks to ensure that earthworks within the 1 per cent AEP floodplain do not exacerbate flooding,
or result in permanent reduction of waterway area or loss of flood plain storage. Policy 5.2.4 seeks to
manage the impact on Mana Whenua cultural heritage. The soil disturbance associated with the
Britomart to Wyndham section will be subject to mitigation measures to ensure adverse effects are
minimised, including the management of overland flow paths and therefore is consistent with
Objectives 5.2.1, 5.2.2 and 5.2.3 and Policies 5.2.2, 5.2.3 and 5.2.4.
Section 5.6 – Contaminated Land
Part 2, Chapter C, Section 5.6 of the PAUP outlines the objectives and policies in relation to
contaminated land. Objective 5.6.1 aims to manage land containing elevated levels of contaminants
to protect human health and the environment and to enable this land to be used for suitable activities
now and in the future. This objective is supported by three policies; Policy 5.6.1 which requires site
investigations to be undertaken, and Policy 5.6.2 which requires the remediation and management of
contaminated land. The site investigations described in the CLA (Appendix E) identified the land
containing elevated levels of contaminants, in accordance with Policy 5.6.1. The removal of
contaminated soil to an appropriate landfill off-site and the implementation of the CSMP will ensure
that any actual and potential effects on human health and the environment associated with
contaminants found in the soil will be appropriately avoided or mitigated. Policy 5.6.3 states that a
number of matters must be taken into account when making decisions on the management or
remediation of land containing elevated levels of contaminants and Policy 5.6.4 states the council will
have regard to Contaminated Land Management Guidelines, No 1, 2 and 5 October 2011. The
information AC needs with which to assess the Britomart to Wyndham section against Policies 5.6.3
and 5.6.4 is contained in the CLA in Appendix E and summarised in Section 7.7 of this report. The
works are therefore considered to be consistent with Objective 5.6.1 and Policies 5.6.1, 5.6.2, 5.6.3
and 5.6.4.
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Section 5.13 – Flooding
Part 2, Chapter C, Section 5.13 of the PAUP outlines the objectives and policies for activities within
flood hazard areas. Objective 5.13.2 states development or redevelopment in existing flood prone
areas should be designed and managed to prevent any increase in flood risk. Policies 5.13.12 and
5.13.15, 5.13.20, 5.13.21 and 5.13.22 are relevant to the proposed works and relate to management
of earthworks, construction of new infrastructure, obstruction and changes of overland flowpaths and
damage to property. Earthworks will be managed so that there is no exacerbation of flooding at any
location upstream and downstream of the works. As the construction in the flood plain areas will be
limited to construction of the CRL tunnels located underground, there will be no permanent reduction
or loss of flood plain. All overland flow path diversions will be reinstated to their pre-construction
location. Temporary diversions will ensure adjacent buildings are not negatively impacted upon. The
works are consistent with the objectives and policies of Section 5.13.
Section 5.15 – Water Quality
Part 2, Chapter C, Section 5.15 of the PAUP outlines the objectives and policies in relation to water
quality. Objective 5.15.4 aims to ensure that development is undertaken in a way that minimises
adverse effects on freshwater and coastal marine ecosystems, and Objective 5.15.5 aims to recognise
and provide for the mauri of freshwater and the relationship of Mana Whenua with freshwater. Of
particular relevance is Policy 5.15.23 which aims to minimise the adverse effects from construction,
maintenance investigation and other activities by establishing minimum performance standards for the
discharges. Groundwater, stormwater, and wastewater will be collected and treated via settlement
tanks to the quality requirements detailed in the PAUP prior to being discharged to the stormwater
system. Water not achieving the required standard will be disposed of off-site in an appropriate trade
waste facility.
Section 5.15.2 – Diversion of Groundwater
Part 2, Chapter C, Section 5.15.2 of the PAUP sets out the objectives and policies for water quantity,
allocation and use. Specific to the diversion of groundwater, the objectives and policies seek to avoid,
remedy or mitigate the adverse effects on groundwater pressure, flooding, ground movement, people
and communities. Part 2, Chapter C, Section 5.16 of the PAUP outlines the objectives and policies in
relation to water quantity, including the diversion of groundwater and the drilling of holes and bores. Of
particular relevance is Policy 5.15.2.18 which states that any adverse effects, including flooding, as a
result of the diversion of groundwater, must be avoided, remedied or mitigated. As stated in Section
7.4 of this report, groundwater inflow into the excavations and dewatering will be monitored. As stated
in Section 7.5, 16 buildings along the Britomart to Wyndham section of works have been identified as
potentially being subject to ‘Very Slight’ and ‘Slight’ building damage as a result of potential settlement
effects. The implementation of the Monitoring and Contingency Plan and proposed monitoring system
by the contractor will appropriately avoid, remedy and mitigate any potential or actual adverse surface
settlement or damage to buildings.
9.6.3
Part 2, Chapter D - Zone Objectives and Policies
Section 3.2 – City Centre
Part 2, Chapter D, Section 3.2 of the PAUP outlines the objectives and policies in relation to the City
Centre Zone. Of particular relevance is Objective 3.2.4 which states the distinctive built form, scale,
identified historic character and functions of particular areas within and adjoining the city centre are
maintained and enhanced; Objective 3.2.5 which states that a hub of an integrated regional transport
system is located within the city centre and the city centre is accessible by a range of transport modes;
and Policy 3.2.13 which aims to encourage the retention and conservation of the city centre’s historic
heritage and special character through development incentives. The proposal is consistent with these
objectives and policies in that the purpose of the Britomart to Wyndham section is to construct the
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CRL tunnels, a significant upgrade to the City’s rail network. During the course of the works
associated with the construction of the tunnels, modification of heritage items adjacent to the Britomart
to Wyndham section route will be required. A HIA (Appendix J) has been prepared to identify the
impact of the works on the scheduled historic heritage CPO building and has concluded that any
potential effects can be managed subject to the implementation of appropriate monitoring and
mitigation measures in conjunction with proposed design and construction methodologies.
9.6.4
Part 2, Chapter E - Overlay Objectives and Policies
Section 2 – Historic Heritage
Part 2, Chapter E, Section 2 of the PAUP outlines the objectives and policies in relation to the Historic
Heritage overlay. In particular, Objective 2.2 is relevant, as it seeks to protect scheduled historic
heritage places from inappropriate demolition or destruction and the adverse effects of development
and/or subdivision. As outlined in Section 7.14 and the HIA (Appendix J) only one historic heritage
building (the CPO) has been assessed due to the earthworks activities proposed within its extents.
While not considered likely to be subject to settlement effects, the CPO will be monitored for any
potential or actual building damage. The proposed methods of mitigation through the CEMP and
Contingency and Monitoring Plan of any actual or potential adverse effects on historic heritage
associated with the works are consistent with the objectives and policies of Section 2.
Section 5 – Mana Whenua
Part 2, Chapter E, Section 5 of the PAUP outlines the objectives and policies in relation to the Mana
Whenua overlay. In particular, Policy 5.3a is relevant, as it requires earthworks to avoid adverse
effects on the values and associations of Mana Whenua with their sites and places of value. Sites of
Significance to Mana Whenua are within 50 m of the proposed Britomart to Wyndham section. As
outlined in Sections 6.6 and 7.15, engagement with Mana whenua has been ongoing through the CRL
Mana Whenua Forum and targeted Britomart to Wyndham section hui, and will continue to ensure the
protection of the values and associations of Mana Whenua with their sites and places of value.
9.6.5
Part 2, Chapter F - Precinct Objectives and Policies
The Britomart to Wyndham section route passes through two precinct areas within the City Centre
zone: Britomart and Downtown West. Part 2 Chapter F, Section 3 of the PAUP outlines the objectives
and policies for these precincts that apply in addition to the underlying City Centre zone. The
Downtown precinct represents a transitional space between the CBD and waterfront. Public open
space and pedestrian connections are to be enhanced. In this instance the transport function of the
Britomart precinct is most relevant to the Britomart to Wyndham section.
Section 3 – Britomart
The Britomart precinct is bordered by Lower Queen Street, Quay Street, Britomart Place and Customs
Street East. The purpose of the precinct is to act as a transport centre, linking the CBD with the
harbour edge and preserving the special character and heritage values of the area. Policy 3.2.8
states the adaptive reuse of historic heritage buildings is to be enabled while ensuring valued features
are maintained and enhanced. The HIA in Appendix J has considered the impact of the proposed
earthworks activities on the CPO building and concluded that valued features will be maintained and
that these works and any associated effects can be appropriately managed through the proposed
methods of mitigation through the CEMP and Contingency and Monitoring Plan, enabling the
continued adaptive reuse of the building.
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9.6.6
Matters of Discretion and Assessment Criteria for Discharges to Air
In terms of discharges of contaminants to air pursuant to Activity Table 1 of Chapter H, Section 4.1 of
the PAUP, Clause 5.1 sets out the matters over which AC will restrict its discretion when considering
this application. Clause 5.1.1 sets out the following general matters of discretion: and Clause 5.1.6
sets out matters of discretion for dust generating activities:


Offsets for discharges of PM10 and PM2.5; and
Location of activity and site layout.
Clause 5.1.6 sets out matters of discretion for dust generating activities:


Effects arising from the discharge;


Mitigation measures and management plans.
Sensitivity of receiving environment and separation distances between the activity and any sensitive
land uses; and
Clause 5.2 outlines the Assessment criteria AC will consider. These assessment criteria and
matters of discretion have been assessed in Section 7.11 and the AQA contained in Appendix H of
this report and an Air Quality Management Plan has been prepared and is included in Appendix H.
9.6.7
Matters of Discretion and Assessment Criteria for Earthworks
In terms of earthworks within the 100-year ARI flood plain pursuant to Rule 1.2 and earthworks for
network utilities and road networks pursuant to Rule 1.1 of Chapter H, Section 4.2 of the PAUP,
Clause 3.1 sets out the matters over which AC will restrict its discretion when considering this
application. The matters of discretion relate to:






Avoiding adverse effects of disturbance and sedimentation;

Potential effects on overland flow paths and flooding, natural and historic heritage, the mauri of
water.
Erosion and sediment control measures;
Staging, timing and duration of works;
Avoiding potential public health and safety;
Nuisance effects and the management of dust, noise and vibration;
Treatment of stockpiled materials on the site including requirements to remove material if it is not to
be reused on the site; and
Chapter H. Section 4.2 of the PAUP, Clause 3.2 outlines the assessment criteria AC will consider.
These assessment criteria and matters of discretion have been assessed in Section 7.3 of this report.
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9.6.8
Matters of Discretion and Assessment Criteria for Diversion and Take
of Groundwater
In terms of groundwater diversion and take pursuant to the Activity Table of Chapter H, Section 4.17 of
the PAUP, Clause 5.1.9 sets out the matters over which AC will restrict its discretion when considering
this application for a restricted discretionary activity. The matters of discretion relate to:











Pressures and base flow;
Existing takes and diversions;
Ground settlement;
Surface flooding including any increase in frequency or magnitude of flood events;
Cumulative effects;
Sediment or other contaminants;
Terrestrial and freshwater ecosystems and habitats;
Monitoring and contingency plan;
Location, rate and volume of dewatering;
Water shortage; and
Effects on Mana Whenua values.
In addition to the matters of discretion, Clause 5.2 outlines the assessment criteria AC will consider.
These assessment criteria and matters of discretion have been assessed in Section 7.4 and 7.5 of this
report.
9.6.9
Matters of Control and Assessment Criteria for Drilling Holes and
Bores
In terms of drilling holes and bores pursuant to the Activity Table 1 of Chapter H, Section 4.17 of the
PAUP, Clause 4.1 sets out the matters over which AC will exercise its control when considering this
application for a controlled activity. The matters of control relate to:



New bores for purposes not otherwise specified




The provision for bore identification;
The location, depth and design of the bore and the design of the head works;
Effects on areas of ;any scheduled historic heritage place or scheduled sites and places of
significance to Mana Whenua;
Maintenance of the bore;
Monitoring and reporting requirements; and
The duration of the consent and the timing and nature of reviews of consent conditions.
In addition to the matters of discretion, Clause 4.2 outlines the assessment criteria AC will consider.
These assessment criteria and matters of discretion have been assessed in Section 7.4 of this report.
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9.6.10
Matters of Control for Discharges from Contaminated Land and from
Disturbance of Contaminated Land
In terms of the discharges from land containing elevated levels of contaminants and disturbance of
land containing elevated levels of contaminants pursuant to Rule 2.3.1 of Chapter H, Section 4.5,
Clause 4.1 sets out matters over which AC will exercise its discretion when considering this application
for a restricted discretionary activity.
The matters of discretion relate to:





Adequacy of the detailed site investigation and the remedial action plan;
The suitability of the land for the proposed activity, given the extent and type of soil contamination;
The approach to the remediation or ongoing management of the site;
The adequacy of the site management plan or/and the site validation report; and
The transport, disposal and tracking of soil and other materials removed in the course of the activity.
These matters have been assessed in the CLA contained in Appendix E and summarised in Section
7.7 of this report.
9.7
Conclusion
Given the above assessment, this document supports applications for the resource consents and
certificates of compliance outlined within Section 1.4.1 and 1.4.2. The proposal to construct the
Britomart to Wyndham section is consistent with the policy direction of the relevant planning
documents, being the ARPS, ACRP: ALW, ACRP: SC, NESsoil, and the PAUP. The Britomart to
Wyndham section will facilitate the construction of the CRL project. The effects associated with the
Britomart to Wyndham section, such as dust, sediment, contamination, settlement, and water quality
are considered temporary in nature and can be mitigated through implementation of an approved
CEMP. Overall, the proposal enables people to provide for their economic and in turn social wellbeing,
while avoiding and mitigating any adverse effects through a range of design and mitigation measures
proposed and is therefore consistent with Part 2 of the RMA and the relevant planning documents. It
is therefore considered that the relevant applications for resource consent can be granted, subject to
appropriate conditions of consent.
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10 Proposed Resource
Consent Conditions
10.1
Proposed Resource Consent Conditions
Draft resource consent conditions which propose management processes, the preparation and
implementation of management plans and specific measures to mitigate the actual and potential
adverse effects associated with the Britomart to Wyndham section have been included at Appendix
N. The draft resource consent conditions were developed based on the findings of the expert reports
(Appendix D to Appendix K) and have been reviewed by the authors of those reports. It is
acknowledged that the suite of conditions included at Appendix N is not comprehensive and there will
be other conditions of a relatively standard nature that it will be appropriate for AC to apply.
Broadly, the proposed conditions suite covers the following matters:



Disputes resolution process;


Air discharge (dust) (including the requirement for an AQMP to be developed);

Contaminated land discharges and protection of human health (including the requirement for a
CSMP to be developed);


Stormwater management (including the requirement for an ITA EMP to be developed); and
Construction management (including the requirement for a CEMP to be developed);
Earthworks (including the requirement for an ESCP to be developed along with the development of
archaeological and accidental discovery protocols);
Groundwater and settlement (including the requirement for a M&CP to be developed, including
requirement for condition surveys; groundwater monitoring; settlement monitoring and repair of
unforeseen damage requirements/ processes);
The requirement for a comprehensive water discharge quality programme to be developed along
with associated monitoring.
10.2
Requested Resource Consent Terms and Lapse Periods
As discussed at Section 8.2.9, AT has specified the following resource consent terms and lapse
periods and the reasons for those. These are:



Under section 123(b), the duration of the land use consents being sought is unlimited;
Under section 123(d), the duration of the discharge and water permits being sought is 35 years; and
Under section 125(1), the lapse period for all resource consents being sought is 15 years.
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11 Conclusion
AT is seeking resource consents and certificates of compliance to authorise the Britomart to Wyndham
section, which is the first package of resource consents required for the CRL project.
This report provides an assessment of effects on the environment for Resource Consent Package 1
which relates to resource consents associated with the construction of infrastructure associated with
the Britomart to Wyndham section, inclusive of the section of tunnel running beneath the DSC. This
application excludes resource consents for the operation of the CRL.
The majority of actual and potential effects on the environment associated with the Britomart to
Wyndham section, are groundwater diversion, settlement, water quality, dust, sediment and
contamination. While these effects will generally be temporary in nature, a range of monitoring and
mitigation measures have been recommended to ensure that these potential effects can be avoided,
remedied or mitigated. Draft conditions have been proposed. Once completed, the Britomart to
Wyndham section and its associated features will be predominantly underground, and CSAs will be
reinstated to preconstruction levels.
Overall, the proposed Britomart to Wyndham section will facilitate the construction of the CRL project,
and will ensure a safe and efficient transport system. Therefore, it is consistent with the policy direction
of the relevant planning documents, and with the purpose of the RMA as the Britomart to Wyndham
section enables people to provide for their economic and in turn social wellbeing, while avoiding and
mitigating any adverse effects through a range of design and mitigation measures proposed to be
implemented through conditions of resource consent.
While it is considered that the actual and potential effects of the proposal are able to be avoided,
remedied or mitigated, due to the scale of the proposal and the level of public interest, AT requests
that the resource consent applications be publicly notified under section 95A(2)(b) of the RMA.
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Appendices
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Appendix A
Certificates of Title
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Appendix B
Design and Construction
Report
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Appendix C
Groundwater Effects
Assessment
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Appendix D
Assessment of Settlement
Effects
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Appendix E
Contaminated Land
Assessment
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Appendix F
Water Quality Assessment
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Appendix G
Industrial and Trade
Activities Assessment
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Appendix H
Air Quality Assessment
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Appendix I
Draft Erosion & Sediment
Control Management Plan
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Appendix J
Heritage Impact Assessment
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Appendix K
City Rail Link Notice of
Requirement Built Heritage
Technical Expert Report
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Appendix L
Stakeholder
Correspondence and
Minutes
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Appendix M
Mana Whenua
Correspondence and
Minutes
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Appendix N
Proposed Resource
Consent Conditions
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Appendix O
Drawings
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