Contaminated land assessment part 1 by City Rail Link Ltd

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Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Auckland Transport 25 July 2012 (Revision 4)

Contaminated Land Assessment City Rail Link

AECOM

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Contaminated Land Assessment City Rail Link

Prepared for Auckland Transport

Prepared by AECOM New Zealand Limited

8 Mahuhu Crescent, Auckland 1010, PO Box 4241, Auckland 1140, New Zealand T +64 9 967 9200 F +64 9 967 9201 www.aecom.com

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© AECOM New Zealand Limited (AECOM). All rights reserved. AECOM has prepared this document for the sole use of the Client and for a specific purpose, each as expressly stated in the document. No other party should rely on this document without the prior written consent of AECOM. AECOM undertakes no duty, nor accepts any responsibility, to any third party who may rely upon or use this document. This document has been prepared based on the Client’s description of its requirements and AECOM’s experience, having regard to assumptions that AECOM can reasonably be expected to make in accordance with sound professional principles. AECOM may also have relied upon information provided by the Client and other third parties to prepare this document, some of which may not have been verified. Subject to the above conditions, this document may be transmitted, reproduced or disseminated only in its entirety.

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Table of Contents 1.0 2.0 3.0 4.0

5.0

6.0

7.0

8.0 9.0 10.0

Glossary of Terms Executive Summary CRL Description 3.1 CRL Description 3.2 Areas of CRL Description of Particular Relevance to this Technical Report Existing Environment 4.1 CLA Scope and Objective 4.2 Geology and Hydrogeology 4.3 Topography and Drainage 4.4 Past and Present Land-use with Potential for Contamination 4.4.1 Past Land-use Activities 4.4.2 Current Land-use Activities Legislative Framework 5.1 Applicable Standards and Statutory Guidance 5.1.1 National Environmental Standard for Contaminants in Soil 5.1.2 Auckland Regional Plan: Air Land and Water 5.1.3 Auckland District Plan 5.2 Summary of Applicable Standards and Guidelines Technical Assessment Methodology and Findings 6.1 Methodology 6.2 Site History Review Summary - Technical Assessment 6.2.1 Past Land-use Activities 6.2.2 Current Land-use Activities 6.2.3 Previous Environmental Investigations 6.2.4 Site Inspection 6.3 Potential Contaminant Sources 6.3.1 Tier 1 Properties 6.3.2 Tier 2 Properties 6.3.3 Tier 3 Properties 6.4 Results from Preliminary Stage 2 ESA (2012) 6.4.1 Soil 6.4.2 Groundwater 6.4.3 Site Characterisation Summary 6.4.4 Waste Disposal and Leachability â€“ 2012 Stage 2 ESA Data 6.5 Preliminary Conceptual Site Model Assessment of Effects on the Environment and Options for Avoiding, Remedying or Mitigating Adverse Effects 7.1 Positive Effects 7.2 Adverse Effects: Construction 7.3 Assessment of Adverse Effects for Construction 7.4 Operational Effects Conclusion References Limitations

1 3 5 5 5 6 6 6 7 7 7 7 8 8 8 8 9 9 11 11 12 12 15 16 19 21 21 21 22 22 22 24 25 26 26 28 28 28 29 38 38 39 40

Appendix A Tables and Figures

Appendix B Bore logs

Appendix C Aerial Photographs and Summary

Appendix D 2010 Investigation Data

Appendix E Additional Supporting Documentation

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Glossary of Terms

Term / Acronym

Meaning

AECOM

AECOM New Zealand Ltd

AEE

Assessment of Environmental Effects

ALWP

Auckland Council: Air, Land and Water Plan

ANZECC

Australia and New Zealand Environment and Conservation Council

APB&B

AECOM Parsons Brinckerhoff and Beca – an alliance that prepared the CBD Rail Link Study – Geotechnical Factual Report (April 2010).

ARTA

Auckland Regional Transport Authority

ASS

Acid sulphate soils

Auckland Transport

BaP

Benzo(a)pyrene

BTEX

Benzene, toluene, ethylbenzene, and xylene

CCA

Copper, chromium, arsenic

CCME

Canadian Council of Ministers for the Environment

CDR

Concept Design Report

CEMP

Construction Environmental Management Plan

CLA

Contaminated Land Assessment

CMJ

Central motorway junction

CoPC

Contaminants of potential concern

CRL

City Rail Link

CSM

Conceptual Site Model

DEHP

Bis(2-ethylhexyl)phthalate

DESG

Designation

District Plan

The CRL designation covers both the Central and Isthmus Sections of the District Plan administered by Auckland Council

DOP

Dioctyl phthalate

ECBF

East Coast Bays Formation

EMP

Environmental Management Plan

EMF

Environmental Management Framework

ESA

Environmental Site Assessment (Stage 1 & 2) conducted in 2012 Stage 1 relates to the historical desk study review Stage 2 relates to the site investigation

HAIL

Hazardous Activities and Industries list

LIM

Land Information Memorandum

LOR

Limit of Reporting

m bgl

metres below ground level

MAH

Monocyclic Aromatic Hydrocarbon

MfE

Ministry for the Environment

MoH

Ministry of Health

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Term / Acronym

Meaning

MSDS

Material Safety Data Sheets

NAL

North Auckland Line

NEPC

National Environment Protection Council

NES

National Environmental Standard for assessing and managing contaminants in soil to protect human health

NoR

Notice of Requirement

NZDWS

New Zealand Drinking Water Standards

NZTA

New Zealand Transport Authority

Outline Plan

Section 176 A of Resource Management Act 1991 requires an outline plan to be developed providing the detailed description (i.e. height, shape and any other matters to avoid, remedy, or mitigate any adverse effects on the environment) of the public work, project, or work to be constructed on designated land. It must be submitted by the requiring authority to the territorial authority to allow the territorial authority to request changes before construction is commenced.

PAH

Polycyclic Aromatic Hydrocarbon

PCB

Polychlorinated Biphenyls

PCE

Tetrachloroethylene

PCP

Pentachlorophenol

PDP

Pattle Delamore Partners Ltd

PRP

Preliminary remediation plan

RAP

Remedial action plan

Riser Shafts

Vertical shafts that supply services (power, water, ventilation etc) to the stations and tunnels

Reduced level

SCS

Soil contaminant standards

Site investigation

SOPs

Standard operating procedures

Strata (designation)

Designation of land layer between the ground surface and the sub-strata designation. This starts at a nominated distance below the surface and extends down to meet the substrata designation (the tunnel envelope)

Sub-strata (designation)

Designation of land starting below the strata designation to the centre of the earth (provides for the rail tunnels)

Surface (designation)

designation of the ground surface (including air space above and land below to the centre of the earth)

SVOC

Semi volatile organic compounds

TBM

Tunnel boring machine

TCE

Trichloroethylene

TEF

Toxic equivalency factors

TPH

Total petroleum hydrocarbons

T&T

Tonkin and Taylor Ltd

UST

Underground storage tank

UXO

Unexploded ordinance

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Executive Summary

AECOM New Zealand Limited (AECOM) was engaged by Auckland Transport (AT) to undertake a Contaminated Land Assessment (CLA) to support the Notices of Requirement (NoR) for the City Rail Link (CRL). The objective of the CLA is to document areas of environmental concern, as well as to provide a process for identifying, assessing, and managing contamination along the CRL during construction and future operation. In accordance with the Resource Management (National Environmental Standard for assessing and managing contaminants in soil to protect human health) Regulations 2011 (NES), a staged approach was used for the CLA. Stage 1 and Stage 2 Preliminary Environmental Site Assessments (ESAs) were completed for the assessment of contamination along the City Rail Link to support the preparation of the CLA. The Stage 1 ESA consisted of a desktop review of current and historic aerial photos, relevant Council records and inspections of the CRL. The findings of the Stage 1 ESA were evaluated through a preliminary risk assessment which identified areas most likely to have soil or groundwater contamination from past or current site activities. This information was then used as the foundation for the Preliminary Stage 2 ESA intrusive works, which included soil and groundwater sampling and analysis. Only sites which had a moderate or high risk were evaluated. Evaluation of risk of potential impact was carried out by developing three primary risk categories to assist in classifying their effects (assessed in Section 7.0). The risk categories were identified as Tier 1 to 3 as follows: -

Tier 1, relates to locations where contamination has been identified or is likely based on historic land-use and has the potential to be uncovered during the construction phase. These properties are either located directly on or immediately adjacent to the designation footprint where cut and cover or top down construction activities are anticipated.

Tier 2, relates to locations where the identified properties are either on or adjacent to the alignment and:

contamination was previously identified and has been remediated and validated as suitable for its existing land-use, or

considered to have a low risk of contamination being present based on its current or historic land-use.

Tier 3, relates to locations where contamination may be present from an existing or previous land-use but present little or no risk. This is because they: 

are a significant distance from the CRL designation footprint,



are down gradient,



will not be subject to any construction works associated with the CRL and are unlikely to have any migration of contaminants to the CRL construction works, or



have been remediated and validated for their existing land-use and do not pose a risk for migration of contaminants to the study area.

Tier 2 and 3 sites have been reviewed as part of the Stage 1 ESA because of the potential for migration of contaminants (e.g., landfill gas and groundwater contamination can migrate long distances) and the need to demonstrate that the associated risks have been considered for the CRL. A number of other potential sources, not specifically identified within the vicinity of the designation footprint, include activities such as small quantities of dangerous goods, use of old electrical transformers, storage tanks for auxiliary power supplies in office building basements, dry cleaning chemicals and historic activities. Findings of the Preliminary Stage 2 ESA indicate that the risk is relatively low at most locations within the designation. Concentrations of arsenic at one location (TP107_0.9-1.0) and benzo(a)pyrene (BaP) at two locations (BH167_0.1-0.2 and TP104 0.6-0.7) exceeded the NES Soil Contaminant Standards (SCS) for protection of human health. The results show contaminants are present at a limited number of locations; the majority of the soil and groundwater samples analysed returned concentrations below the NES SCS. Other criteria were included for comparison purposes only. Concentrations of copper, lead, nickel, zinc, and BaP were above Auckland Council’s Regional Plan: Air, Land and Water permitted discharge criteria at eleven locations, and arsenic was above recognised background levels at five locations. Refer to Section 6.4 for information on results of the Preliminary Stage 2 ESA (2012).

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Identified contamination or potential contamination has been assessed in the context of the construction of the CRL and is not applicable to existing land-use and should not be used to compare or assess the suitability for existing land-use. The findings of the Preliminary Stage 2 ESA were utilised to re-evaluate the potential risk at the investigated sites. This information forms the basis for the assessment of environmental effects and formulation of mitigation strategies. Based on the Preliminary Stage 2 ESA findings, the key potential adverse effects related to contamination requiring mitigation include: 1.

Exposure to workers and members of the public due to dermal, ingestion and inhalation exposure pathways.

Mobilisation of contaminants through the creation of preferential pathways.

Contaminated sediment runoff into stormwater.

Note: refer to 2012 Air Quality Assessment for mitigation measures relating to dust and odour. Separate to this, and independent to consideration of environmental effects, other factors such as aggressive pH conditions on building materials will be assessed in future design phases. Sustainability will also be incorporated into the selected methodology for the remedial approach, including consideration of the carbon footprint / greenhouse gas generation. The above identified effects will require mitigation and management to address the health and safety of construction workers and the general public, together with environmental considerations. The mitigation and management requirements are consistent with accepted industry practice for contaminated sites in New Zealand. The options for mitigating these potential risks will be addressed in the Remediation Plan which forms part of the Environmental Management Plan and outlined in the Environmental Management Framework supporting the AEE. Actual implementation of control measures during construction will be addressed and managed under a Construction Environmental Management Plan (CEMP)/Remedial Action Plan (RAP) and Hazardous Materials 1 Removal Specification which will be developed for the construction phase . Key recommended mitigation and management measures include: 1)

Health and safety training and planning that addresses hazardous substances.

Development and implementation of erosion control, dust control, and stormwater management plans.

Appropriate soil and groundwater classification, management, and disposal.

With proper implementation of these measures, the risk to workers, members of the public, and the environment is considered to be low. Mitigation measures for the operational phase will be developed under the framework of the monitoring and management programme implemented during the construction phase and will address worker and public protection for areas where re-used contaminated soil may be excavated or contaminated groundwater may be encountered. Positive effects are possible in that contaminated soil (and possibly groundwater) will be removed from the area.

1 2

Refer to the Environmental Management Framework. Auckland Council Regional Plan: Air, Land and Water (2012).

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3.0

CRL Description

3.1

CRL Description

The CRL comprises the construction, operation and maintenance of a 3.4km underground passenger railway (including two tracks and three stations underground) running between Britomart Station and the North Auckland Line (NAL) in the vicinity of the existing Mount Eden Station and an additional 850 m of track modifications within the NAL. For ease of reference in this report, the stations included in the CRL NoR have been temporarily named Aotea Station, Karangahape Station and Newton Station. The stations will be formally named in the future. A more detailed description of the CRL is provided in the Assessment of Environmental Effects (AEE) which supports the NoR and the CRL 2012 Concept Design Report. This technical expert report has been developed by AECOM New Zealand Ltd (AECOM) to provide an independent expert assessment of the actual and potential effects associated with the CRL from a contamination perspective. This Contaminated Land Assessment (CLA) is an appendix to the AEE which supports the NoR to be served by Auckland Transport on Auckland Council to designate the CRL for future construction, operation and maintenance. The NoR covers surface land, strata land (protection area), and sub-strata land designations within the Auckland City District Plan (both Isthmus and Central Area Sections). AECOM confirms that the content of this report has been written with reference to the Key Project Parameters set out in the CRL 2012 Concept Design Report.

3.2

Areas of CRL Description of Particular Relevance to this Technical Report

This CLA focuses on the potential for contamination in areas required for the construction of the CRL within the top 10 - 15 m bgl (metres below ground level). This is due to the expected depth of uncontrolled fill material, the low permeability of the soil/rock at this depth (in general) and therefore the low potential for impact below this depth. Whilst the indicative construction phase of the CRL has been considered in this report, the actual management of the potential contamination identified in this report it will be addressed in more detail under the Outline Plan process and CEMP. The CLA has therefore focused on key areas of the 2012 Concept Design Report which include: -

Areas where an indicative cut and cover construction methodology is proposed.

Station locations where construction will occur at or near surface grade, including pedestrian access and service riser shafts.

A review of groundwater and soil quality both at surface and at depth will be undertaken to support the preliminary and detailed design at a later date and will be addressed as part of the consideration of future resource consents required under section 15 of the RMA relating to the discharge of contaminants into the environment. Auckland Councilâ€™s Air, Land and Water Plan2 (ALWP) is discussed in Section 5.0 as it relates to contamination but is not a matter of consideration for the NoR at this stage as further work to determine the compliance with the ALWP is a matter for future resource consents. The ALWP has been addressed in order to identify likely consenting considerations needed prior to the construction of the CRL. Site contamination data has a limited validity period, particularly on active Hazardous Activities and Industries List (HAIL) sites and therefore this detailed data collection program and assessment should be undertaken as part of preparing and obtaining resource consents.

4.0

Existing Environment

4.1

CLA Scope and Objective

Auckland Council Regional Plan: Air, Land and Water (2012).

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4.0

Existing Environment

4.1

CLA Scope and Objective

The scope of the CLA included a Stage 1 and Stage 2 ESA as described in the NES, along with preparation of supporting documentation of findings. The Stage 1 ESA scope included a desktop study of current and historic aerial photos, relevant Council records, and site reconnaissance. The Stage 2 ESA scope included collection and analysis of soil and groundwater samples, data and risk evaluation. The findings from the Stage 1 and Stage 2 ESA were used in the assessment of potential environmental effects and recommended mitigation and management measures. The objective of this CLA is to document areas of environmental concern, as well as to provide a process for identifying, assessing and managing contamination along the CRL during construction and future operation. CLA findings regarding the existing environment are presented below.

4.2

Geology and Hydrogeology

The geology beneath the Auckland region is described in Geological Map 3, Geology of the Auckland Area 1:250,000 (Institute of Geological and Nuclear Sciences, 2001). The predominant geological setting is described as follows: -

Fill Fill has been reported at varying depths along the CRL, comprising a combination of bricks, basaltic scoria, concrete, silty clay and sandy clay.

Alluvium Tauranga Group materials comprising heterogeneous sand, silt, gravels, muds, reworked ignimbrite and organic soils.

Auckland Volcanic Field This comprises volcanic materials of basaltic origin and comprise the following fine grained volcanic rock, common throughout the CRL area.



basaltic lava – generally a low porosity rock but containing some fractures.



scoria – a regular vesicular gravel sized volcanic material ejected from a volcanic centre and typically forming a scoria cone.



ash and lapilli – fragments of rock and other volcanic materials less than 2 mm in diameter (i.e. sand, silt and clay), typically transported away from the volcanic centre in an ash cloud.



tuff – comminuted country rock and volcanic rock ejected from volcanic vents and commonly emplaced while still hot causing material to become partially welded (cemented).

East Coast Bays Formation (ECBF). 

Comprises bedded sandstone, siltstone and mudstone and forms the basement rock with the CRL area.

Initial details of the geology for the CRL were provided in the 2010 Geotechnical Site Investigation Report, 3 4 prepared by APB&B , September 2010 . Variation in hydrology from marine influences was observed within reclamation fill in the lower city centre (MW11, MW35, MW45 and MW103) at a depth of 2.4-3.7 m bgl. Aquifers within ECBF (MW105 and MW5b) ranged from 4.9 to 5.4 m bgl and basalt (MW167) at a depth of 4.4m bgl. -5

The 2010 Geotechnical Site Investigation Report provided hydraulic conductivity values ranging from 1x10 to -8 1x10 m/sec within the various geological formations along the CRL. Aquifers within bedrock are considered to have a slightly higher conductivity than alluvial materials due to the presence of rock fractures.

APB&B – a consortium of consultant companies AECOM, Parsons Brinkerhoff and Beca who developed a concept design for the CRL for KiwiRail and the Auckland Regional Transport Authority (ARTA) in 2010. 4 CBD Rail Link Study – Geotechnical Factual Report, APB&B, 19 April 2010 for KiwiRail and Auckland Regional Transport Authority. 3

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Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Topography and Drainage

Auckland is built on a volcanic field, characterised by a landscape dotted with the remnants of cones and craters, ridges and valleys. The terrain climbs steeply from the Waitemata Harbour edge to meet ridges bounding the city on the east, west and south. Symonds Street is located along the north/south ridge, whilst K Road and Ponsonby Roads continue along the east/west ridge. The CRL will start at approximately reduced level (RL) -7.5 m at Britomart and conclude at approximately RL 69 m at the North Auckland Line (NAL, an elevation change of 76 m). The CRL runs beneath existing road surfaces. The roads and properties on or either side of the CRL are generally sealed with asphalt (sometimes concrete) and therefore surface runoff is controlled by a network of stormwater pipes. There are no open drainage channels/streams or areas of temporary ponded surface water. More detailed information is provided in the 2010 Geotechnical Site Investigation Report.

4.4

Past and Present Land-use with Potential for Contamination

This section presents a summary of properties identified as having potential for contamination based on their past and present land-use. The methodology for establishing this baseline information is further described in Section 6.0. Sites have been listed based on their potential for contaminating land-use activities to have been (or currently be) undertaken. The Ministry for Environment (MfE) has prepared a list of activities and industries which have the potential to cause contamination as well as identifying likely contaminants caused by each activity. The list is referred to as the Hazardous Activities and Industries List (HAIL) and is available on the MfE website (www.mfe.govt.nz). Additional methodology detail and an explanation of how these sites were selected, is provided in Section 6.0. 4.4.1

Past Land-use Activities

The CRL passes through Aucklandâ€™s early settlements which included the commercial centre (lower Queen Street), residential areas and the outlying industrial area of Newton, Eden Terrace and Mt Eden. A review of aerial photographs from 1940 to 2011, searches of Auckland Council databases and property files, previous 5 environmental investigations and property title searches identified a number of properties which are known to be or to have been contaminated. These are shown in Figure F2 Appendix A and listed in Section 0 and Table 7. The Auckland waterfront was reclaimed from the harbour from the 1860s through to the 1880s. Previous environmental investigations of properties located on the old reclamation fill have identified heavy metal and polycyclic aromatic hydrocarbon (PAH) contamination. In addition, there are historic petrol stations and vehicle workshops, railway yards, a timber processing and treatment yard, and an ammunition and plastics factory, all of which could have had activities that contaminated soil and/or groundwater. 4.4.2

Current Land-use Activities

A number of current land-use activities were identified as having potential for contamination. These were identified from aerial photographs, Council information on property files / resource consents / historical records, previous reports and inspection of the CRL designation footprint. These potentially contaminated properties are based on review of current land-use information provided in Appendix E (available on CD on request). These land use activities include hazardous substances use and storage, vehicle service and repairs and printing.

Previous environmental investigations identified during various search requests provide a baseline of information on a number of properties along or adjacent to the alignment. Refer to Section 6.2 for more detail. 5

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Legislative Framework

This Contaminated Land Assessment has been undertaken in accordance with the following guidelines: -

Resource Management (National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health) Regulations 2011.

The Auckland Regional Plan: Air, Land and Water (ALWP) (Schedule 13, October 2010). Note that this Regional Plan is included for reference purposes only and is not applicable for NoR.

Auckland District Plan â€“ Central and Isthmus Sections (where it doesnâ€™t conflict with the NES). In areas where the District Plan is more lenient, the NES prevails).

Note that deleterious effects of contamination or aggressive parameters are managed under the Building Act 1991 and have not been considered in this report. Instead these should be managed under future assessments for preliminary and detailed design.

5.1

Applicable Standards and Statutory Guidance

5.1.1

National Environmental Standard for Contaminants in Soil

The National Environmental Standard (NES) for Assessing and Managing Contaminants in Soil to Protect Human Health, came into effect on 1 January 2012. The NES applies to land where an activity described in the MfEâ€™s Hazard Activities and Industries List (HAIL is being, has been undertaken or it is more than likely such an activity or industry has been undertaken. The NES only applies under any of the following conditions for properties identified under HAIL as having potential for contamination: 1)

Removal of fuel storage system(s).

Soil sampling.

Earthworks activities / soil disturbance.

Subdivision of land.

Change of land-use.

Specific activities which trigger the NES include: 3

Where USTs are removed which involve >30 m of soil (in-situ volume) is to be disturbed/removed per UST pit.

Where soil disturbance is >25 m (in-situ volume) per 500 m of land.

Where soil removal is >5 m (in-situ volume) per 500 m of land per year. Note that the soil must be disposed of at a facility authorised to receive the material.

The period of soil disturbance is greater than 2 months.

Subdivision of land or change of land-use

Many of the above conditions and activities are present within the footprint and will trigger the NES during the development. Soil Contaminant Standards (SCSs) are given for 12 priority contaminants under the NES for five land-use scenarios. Methods for setting applicable numerical standards for contaminants in soil are also prescribed for the protection of human health. Soil results from this CLA were compared against the commercial/industrial land-use values for outdoor workers (unpaved). 5.1.2

Auckland Regional Plan: Air Land and Water

The Auckland Regional Plan: Air, Land and Water was made operative in part from 21 October 2010 to control discharge of contaminants. The plan makes reference to contaminated land in various places throughout the document. Note that this Regional Plan is included for reference purposes only and is not applicable for NoR but will be considered during resource consenting.

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In general the plan is more stringent than the NES. The plan allows investigation of contaminated sites, as a permitted activity, provided they are notified prior to the investigation works. Auckland Council was notified in writing for this assessment (refer to Appendix B). Guideline values provided under the Air, Land and Water Plan (ALWP) provide a baseline for what background values will be expected and applicable for future consents. They provide background concentrations for volcanic and non-volcanic soils and groundwater. The following rules will be relevant for future resource consenting: -

Rule 5.5.41: The threshold for Permitted Activities for discharge of contaminants. Consent is not required where Schedule 10 and Schedule 11 background values are not exceeded.

Rule 5.5.44: Controlled Activity requiring consent for discharge of contaminants due to land disturbance activities. Resource consent conditions are likely to require certain management or mitigation measures to be carried out relating to the identified contamination.

Permitted concentrations are provided in Schedule 10 for human health and for the environment (discharge criteria). 5.1.3

Auckland District Plan

The Auckland District Plan, Central and Isthmus Sections control the natural and physical resources of the defined areas. The District Plan contains requirements relating to contamination when undertaking earthworks for development and this report has considered these matters and the mitigation/ remediation matters related to this will be dealt with through the Outline Plan and Environmental Management Framework.

5.2

Summary of Applicable Standards and Guidelines

The applicable standards and guidelines used for the CLA were largely driven by requirements of the NES, together with further guidance from the MfE Contaminated Land Management Guidelines. The hierarchy for application of relevant acceptance criteria provided by the applicable standards and guidelines is described below in Table 1 for both soil and groundwater. Guidelines for commercial/industrial properties were used for evaluation of data. This follows the order of hierarchy in accordance with MfE Guidelines and Auckland Council requirements where available. A summary of the evaluation and selection of guideline values within the wider regulatory framework is provided in Appendix E. The hierarchy for accepted soil guidelines are identified in Table 1 below: Table 1: Hierarchy for acceptance criteria

Order of Applicability

Reference Document

NES for Contaminated Land â€“ 12 priority contaminants, commercial/industrial land-use, 2011.

Petroleum Hydrocarbons - Guidelines for Assessing and Managing Petroleum Hydrocarbon Contaminated Sites in New Zealand, MfE, 2011. Commercial/industrial land-use, all pathways for soils (note that for resource consents, application of the soil values for protection of groundwater are also required).

Where dieldrin and lindane are observed, Identifying, Investigating and Managing Risks Associated with Former Sheep-dip Sites: A guide for local authorities, MfE 2006. Guidelines for Assessing and Managing Contaminated Gasworks Sites in New Zealand, MfE, August 1997. Health and Environmental Guidelines for Selected Timber Treatment Chemicals, New Zealand (MfE/MoH, June 1997).

Canadian Environmental Quality Guidelines, Canadian Council of Ministers of the Environment, 2007.

NEPC, 1999. NEPM National Environment Protection (Assessment of Site Contamination) Measure, Adelaide South Australia (NEPC, 1999).

Health WA, 2009. Guidelines for the Assessment, Remediation and Management of AsbestosContaminated Sites in Western Australia, Department of Health (Health WA) May 2009.

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Notes: -

Refer to MfE 2011, Method for Deriving Standards for Contaminants in Soil to Protect Human Health. Wellington: Ministry for the Environment for how appropriate guideline levels are derived and used.

BaP Toxic Equivalency Factors (TEF) are different between the NES and MfE documents. This CLA uses the NES method for deriving the BaP TEF.

Groundwater and waste classification guidelines have not been included in this section as they are not required for NoR purposes. They are discussed further in Appendix E. Refer to the Groundwater Bore Search Sections in Section 6.2.1.3 and 6.2.2.3 for reference to groundwater extraction in the vicinity of the CRL.

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6.0

Technical Assessment Methodology and Findings

6.1

Methodology

An overview of the technical assessment methodology is presented in Table 2 below. Table 2: Technical Assessment Methodology

Work Activity

Description

Site inspection

A site inspection was undertaken by David Dangerfield of AECOM on 23 February 2012 to identify actual and potential contaminant sources, obvious from a visual inspection of the CRL.

Site history review

A desktop review of historical aerial photos and relevant historical documentation to identify potentially contaminating practices which may have occurred on or nearby the CRL was completed. Searches included review of permits and consents, reported incidents, review of available previous environmental reports and review of the contaminated sites file of the Auckland Council.

Geological and hydrogeological review

A search of the Auckland Councilâ€™s database of properties within a 1 km radius of the CRL and a review of other relevant geological and hydrogeological resources to assess the general sensitivity of the environment within the vicinity of the site.

Preliminary risk evaluation

A preliminary risk assessment was conducted based on the findings from the Stage 1 ESA. This risk assessment provided the basis for the targeted Stage 2 ESA and preparation of this CLA Report. It has since been developed further to include information from the Stage 2 ESA. The outcome of the preliminary risk assessment was incorporated into the assessment of effects, considered in Table 7.

Initial Reporting

Preparation of a Stage 1 ESA report summarising the findings of the desktop review in preparation for intrusive works and completion of this CLA report.

Development of Sampling Rationale

The sampling rationale was based on the primary drivers of the NES which included assessment of human health and collection of data in near surface locations along the CRL focusing on areas identified as having potential risk of contamination based on landuse. Soil sampling from test pit (excavator) and boreholes (drill rig and/or hand auger) was selected as the appropriate method for evaluating the presence or absence of contaminants in soil at areas where indicative cut and cover construction is outlined in the 2012 Concept Design Report. Existing groundwater monitoring wells included: Three wells already installed by Beca for the Britomart development were included in the groundwater monitoring program. These locations are defined as BHI1 (on Tyler Street and renamed MW11), BH35 (on Galway Street and renamed MW35) and BH45 (in Queen Elizabeth Square and renamed MW45). An un-consented well located in Lower Albert Street outside the Downtown Shopping Centre. This location was given the reference MW103 as no details for this well were available. Sampling was also undertaken at the monitoring well MB5b which was previously installed as part of the geotechnical investigation for KiwiRail and ARTA6. No previous environmental sampling had been undertaken at this location and this monitoring well screened the target depth for this CLA (meaning that the portion of the aquifer targeted by this well was within the depth ranged necessary to be applicable for consideration in this CLA). This location is in the vicinity of the anticipated cut and cover section south of Newton Station. Two additional groundwater monitoring wells were installed in 2012 to provide more complete information regarding groundwater quality. Analytes (chemicals scheduled for analysis) were selected based on knowledge of potentially contaminating activities in the vicinity of the sampling locations.

Geotechnical Site Investigation (Factual Report), APB&B, 19 April 2010

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Work Activity

Description

Intrusive site investigation

Seven test pits were advanced within the NAL rail corridor and 10 boreholes at selected locations along the CRL, targeting the proposed station areas and areas of anticipated cut and cover in the vicinity of Britomart and Mount Eden. Establishment and sampling of groundwater monitoring wells was also undertaken. The methodology for the site investigation works undertaken were as follows: Nine machine boreholes: The methodology for the site investigation works undertaken were as follows: Nine machine boreholes: 3 x 10 m -BH102, BH103, BH105. 2 x 6 m – BH116 (re-located from BH118), BH134. 4 x 5 m - BH154, BH162, BH167, TP106. One hand auger location: 1 borehole to refusal on shallow basalt bedrock atat Eden Terrace – TP103. Seven test pits (7 x 3 m – TP101, TP102, TP104, TP105, TP107, TP108 and 109). Seven monitoring wells were selected as follows:  Two boreholes were established as monitoring wells during the site investigation works for groundwater sampling and analyses (MW105 and MW167).  Five existing monitoring wells were utilised from previous developments. Samples were collected and analysed from MW11, MW35, MW45, MW103, MW5b. Laboratory analyses (approximately 48 soil samples and 15 water/groundwater samples) – includes QA/QC sampling requirements (refer to the Appendix E). Preparation of this report, identifying likely triggers of the NES (land-use changes, excavation). The methodology for the site investigation was developed to provide soil and groundwater quality data at each location where near surface strata are likely to be disturbed. Inferred groundwater flow directions from the monitoring wells were not identified due to the distances separating the majority of the wells and the CRL objectives for this CLA. Co-ordinates for borehole locations are available in Appendix B. Additional detail regarding field methodology is provided in the QA/QC section of Appendix E.

6.2

Site History Review Summary - Technical Assessment

This section describes the steps taken to construct a site history for properties along the CRL. The site history review was undertaken in accordance with the MfE’s Contaminated Land Management Guidelines. 6.2.1

Past Land-use Activities

6.2.1.1

Aerial Photographs

Historical aerial photographs were obtained by AECOM as part of the site history review through NZ Aerial Mapping Ltd (NZAM) and the Auckland Council GIS Viewer. Details of the aerial photographs and general observations are summarised in Table C.1 in Appendix C, including copies of aerial photographs. The aerial photographs identify approximate dates of land-use activities both on the CRL and surrounding properties. Locations are referenced by chainage from Britomart. The photographs were used as an additional line of evidence and whilst no potential contaminated sites were identified through this process, they assisted in dating developments on the properties of particular interest. Note that the quality of early photographs, particularly those from the 1940s, made detailed observations of individual properties difficult. 6.2.1.2

Historical Title Information

Given the number of sites along the CRL, certificates of title showing the historic property ownership were not obtained for all properties due to the low risk of potential contamination from the existing land-use within the designation footprint. A comprehensive title and transaction report and property summary report was obtained for 14 properties identified as a result of the desk top review along the CRL. The properties were selected based on information from Auckland Council’s Specialist Input Division and Licensing and Compliance, as sites with the potential to be contaminated based on past or current land-use. These reports identify previous owners of

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properties, however they do not show ownership of land prior to any subdivision. A review of historical owners from these properties did not identify any additional potential contaminating activities. Refer to Section 6.2.2.2 of Current Land-use, below. 6.2.1.3

Auckland Council Archive Information

Information was reviewed from the Auckland Council divisions listed below. Additional detail is available in the Appendix E. The search radius used is consistent with industry standards and was selected in order to address sites which could be contaminated within the CRL, as a result of potential contaminant migration. Specialist Input Division The Specialist Input Division (former Auckland Regional Council) search provided information relating to incidents and consents within a 200 m radius of the CRL. The search radius of 200 m was selected in order to address the probable extent of influence of contamination from properties around the CRL, for surface development, anticipated cut and cover and tunnel sections. Note that this excludes landfills which are discussed below in the Environmental Services Unit - Closed Landfills section. A copy of relevant incidents and resource consents provided by Auckland Council are included in Appendix E. A summary of contamination information at key locations along the CRL is presented in this report. Specific report references and summaries are provided in the search information summary and are also documented in this report. Those properties considered in this section are either within the designation footprint or near to the designation footprint, or topographically up gradient from the designation footprint with potential to pose a risk. No incidents or consents were identified for properties located within the main construction yard area north of the NAL. Contaminated site information that was reviewed (as summarised in Appendix E) from sites not directly within the CRL designation footprint are listed below: -

30-50 Customs Street East

69-95 Customs Street East

73-89 Customs Street East

52-54 Fort Street

80 Queen Street

1 Exmouth Street – petrol station

10-12 Exmouth Street – underground storage tank (UST) removed

14-16 Exmouth Street – oil seepage

These sites were reviewed to determine whether contaminating activities at the sites could adversely affect the environment through or during the construction of the CRL. Reports indicated remediation had occurred at most sites to a standard satisfactory to Auckland Council, with the exception of the identified foreshore reclamation. Pollution response and incident report files for the Waitemata Catchment, which includes Auckland Central, were also reviewed to identify any event which has the potential to have a residual contamination effect. Most events were small and none would be expected to have the potential for ongoing effects. The types of events reported include: -

Illegal dumping of paint, concrete washing or cutting and cooking oil or fat into a stormwater drain

Dry weather sewage overflows

Car accidents or leaking of fuel or oil from vehicles (usually small volumes)

Licensing and Compliance Division The Environmental Health Division search provided information relating to licensing and compliance information held by the former Auckland City Council. Based on records held by the Specialist Input Division, together with other search information such as Council Land Information Memorandum (LIM) reports, a selection of 16 property files were searched by the Licensing and Compliance Division to determine if any record of contaminating activities was available. Refer to Table 4 below for details on current land-use sites.

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Records likely to be of interest to the CRL were viewed from CDs obtained from the Auckland Council (not included in this report). The search identified five sites where historic land contamination was either likely to be present or where it has been cleaned up as part of land-use change / development. A summary of contamination information (as obtained from the licensing and compliance division of Auckland Council) at key locations along the CRL is included in Appendix E and has been used in assessing environmental effects in Section 7.0. Groundwater Database Information A search of available groundwater bores was undertaken with Auckland Council which identified 238 wells within a 1 km radius of the CRL. Refer to Figure F3 for locations of these wells and a summary of groundwater well network information is provided in Appendix E, together with a summary of a review of existing bore logs of a number of wells within the CRL. The majority of the consents for monitoring wells relate to geotechnical or environmental purposes. Note that additional wells that have not been consented are likely to be along the CRL. One such well was identified adjacent to the Downtown Shopping Centre on Lower Albert Street. The following locations were identified, however they are unlikely to be in use (based on current land-use): -

Abels Limited, approximately 800 m to the east – extraction for industrial use (consent to install the well expired in 1993). This site has since been developed into a commercial office building and is unlikely to be still in use.

Carter Holt Harvey Ltd, approximately 10 m to the south (existing NAL) – extraction for irrigation purposes (consent to install the well expired in 1995). This is unlikely to still be in use.

Environmental Services Unit - Closed Landfills The Environmental Services Unit of Auckland Council was approached to identify any registered landfills in the vicinity of the CRL. Auckland Council provided the following information: Three closed landfills were identified within 200 m of the CRL as follows: -

Mountain Road.

Asquith.

Exmouth/Basque.

These are shown in Figure F2 in Appendix A. Auckland Council hold minimal information on these closed landfills but they note the following: -

They appear to be very old (no dates given).

They appear to be small in size (do not encompass the full areas defined in Figure F2).

They do not feature high on Auckland Council’s landfill rating system.

There are no reports / evidence of the generation of either landfill gas or leachate in sufficient quantities to indicate the need for targeted bores/monitoring.

None of these sites are consented for gas/leachate discharge.

None of these sites are monitored for landfill gas and therefore no information on gas production is available.

Exmouth/Basque Reserve has some limited groundwater monitoring that appears to have identified contaminant sources other than landfill (i.e. stormwater). The reserve is however located adjacent to a site found to be impacted with high concentrations of BaP and arsenic above guideline levels. The site well is installed on the Reserve adjacent to Fleet Street, well to the west of the CRL.

Auckland Council noted that “the migration of landfill gas can occur up to some 400 m away from the footprint of a 7 closed landfill” . Potential for migration of contaminants from these sites is considered in Section 0.

Source: Information provided by a Senior Contaminated Land & Closed Landfill Advisor at Auckland Council.

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6.2.2

Current Land-use Activities

6.2.2.1

Aerial Photography

Historical aerial photographs for the CRL are included in Appendix C. The most recent aerial photograph reviewed was taken in 2010 (provided by the Auckland Council GIS database website). No additional potentially contaminating land-use activities were identified from those described in Section 6.2.1.1 above. 6.2.2.2

Property Title Information

Property title information was obtained for 14 targeted properties (as discussed in Section 6.2.1.2). The properties were selected based on information from Auckland Council’s Specialist Input Division and Licensing and Compliance, as sites with the potential to be contaminated based on past land-use. The property title information was obtained using Terralink, an online property information database. Copies of the reports are available on request. The searches included: -

Comprehensive Title and Transaction Report.

Property Summary Report.

A summary of the properties searched and pertinent information relating to current land-use activities is provided in Appendix E. Comments are provided identifying the likelihood of contamination being present. 6.2.2.3

Auckland Council

Specialist Input Division The following table (Table 3) provides a summary of sites identified by the Specialist Input Division as having incidents or consents. Table 3: Incident and Consent Search Summary – Current Land-use

Address

File Number

Finding/Description

Queen Street Station (Britomart)

C512-122700

Borehole logs from Queen Street Station resource consent 25007 (2001). Review shows fill to a depth of 2.5m to 5m and consists mainly of silt and fragments of brick, concrete, rubble, etc.

21 Queen Street (Zurich House)

5-42-3919

Site flagged as potentially contaminated due to presence of above ground storage tank in basement of building. A desk top contamination investigation was completed in 2007, correspondence states all excavated waste to be sent to landfill due to lack of intrusive investigation.

Licensing and Compliance Division The following table (Table 4) provides a summary of sites identified as having current land-use activities of interest from Auckland Council’s Licensing and Compliance Division (Formerly Environmental Health Division). Table 4: Property File Incident and Consent Search Summary – Current Land-use

Address

Finding/Description

21 Queen Street, Auckland Central City

Has a Dangerous Goods License for a diesel fuel tank in the basement. Historic reclamation fill material present.

Groundwater Database Information The following consented wells likely to still be in use (based on current land-use) within 1 km of the CRL are as follows: -

The former Lion Nathan Brewery site on Khyber Pass Road Newmarket, approximately 800 m to the east – two wells for extraction for groundwater for the brewery/industrial supply. It is unlikely that these are still used.

Auckland Council, approximately 900 m (east) – extraction for irrigation purposes. The well has potentially been installed and may be in use.

Auckland Healthcare (Auckland Hospital), approximately 700 m (northeast). The well has potentially been installed and may be in use.

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These wells are unlikely to be hydraulically connected to the CRL, however this should be considered further in a later design phase. 6.2.3

Previous Environmental Investigations

Previous environmental investigations reviewed include investigations obtained from Council files as well as relevant reports previously prepared in 2009 and 2010 for the KiwiRail and ARTA. In reviewing Council files for each selected property only the most recent or particularly relevant environmental investigation reports were reviewed in detail. Full references and details of each report are available in the Specialist Input Division search summary in Appendix E. Other environmental investigation reports or correspondence may be on file but contents are contained within subsequent reports so only the most recent report has been referenced. Refer to Table 3 above and Appendix E for a summary of council search information collected from available previous environmental investigations. 6.2.3.1

Zurich House

The report reviewed in detail is as follows: -

Tonkin & Taylor, 5 Sept 2007. Proposed Re-development of Downtown House - Contamination Desk Study.

21 Queen Street is a commercial office building (Zurich House). The property is listed as a contaminated site due to the presence of a 2,500 L diesel fuel tank in the basement. The storage tank is contained with a separate room in the basement and a visual inspection in 2007 found no evidence of leaking or staining. There is no mention in the Contamination Desk Study Report of the pipelines for the storage tank. The site is also within the foreshore area reclaimed in the late 1800s. No intrusive investigation was completed for this site, however correspondence stipulates any material encountered on-site must be treated as contaminated due to other environmental investigations for sites within the reclaimed foreshore showing contamination. 6.2.3.2

Former Service Station, 14-16 Pitt Street

The report reviewed in detail is as follows: -

ERM, 8 Sept 2010. Soil Validation Investigation, Pitt St, Corner of Pitt Street and Vincent Street, Auckland City, New Zealand. Report for Greenstone Energy Limited.

A petrol station located at 14-16 Pitt Street was remediated in 2010. MfE Contaminated Land Management Guidelines were followed and the site validation investigation held on the Auckland Council files. Correspondence from the then Auckland Regional Council confirms the site appears to meet Tier 1 soil acceptance criteria for commercial land-use and is a permitted activity. 6.2.3.3

Former Timber Treatment Site, Mt Eden

The reports reviewed in detail are as follows: -

Woodward-Clyde, March 1996. Carter Holt Harvey Ltd Mt Eden Site, Remediation Validation.

Woodward-Clyde, April 1997. Carter Holt Harvey Mt Eden St, Monitoring and Contingency Plan.

Pattle Delamore Partners, Feb 1998. Assessment of Environmental Effects, Proposed Redevelopment of Former Yard 6 Area of Carter Holt Harvey Timber Processing Site, Mt Eden. Phase 1 (Residential). Prepared for Practec Group Limited.

Woodward-Clyde, March 1998. Bore Sealing Completion Report. Prepared for CHH.

Pattle Delamore Partners, May 2005. Letter Report: Eden 5 and 6 Development - Resource Consent AO/99/622: Site Contamination Investigation and Risk Assessment Report. Prepared for Redwood Group Limited.

Pattle Delamore Partners, May 2005. Remedial Action Plan for soil contamination for Eden 5 and 6. Prepared for Redwood Group Limited.

Pattle Delamore Partners, Jan 2008. Letter Report â€“ Resource Consent 25902 Groundwater Monitoring.

The area between Harold, Edwin and Enfield Streets to Normanby Road and encompassing Mary Street was the site of timber processing activities until 1994. The area contained a boron dip (known as Yard 6) between Harold and Mary Streets, a plywood factory, outdoor timber storage and drying, and a CCA treatment plant (corner Edwin and Normanby Road).

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A full contaminated site investigation was completed between 1995 and 1997, and reported in compliance with the MfE Contaminated Land Management Guidelines. It included: reports on detailed site investigations (soil and groundwater); a remedial action plan; a site validation report; and the ongoing monitoring and management plan. The sites were remediated and included the removal of contaminated soil. The sites were backfilled with low permeable fill and sealed to prevent rain water ingress and contaminant migration; however, areas of contamination still remain in place. Contaminants of concern were copper, chromium, arsenic, lead and pentachlorophenol (PCP). Groundwater was monitored for soluble metals (arsenic, chromium, and boron) at a down gradient monitoring well, located on Normanby Road. Recent monitoring showed concentrations were consistently below the consent trigger levels and showed a downward trend. A small petrol station/vehicle workshop was located on Mary Street and hydrocarbon contamination was found in the vicinity of the garage. Three USTs were removed in 1995. Subsequent site developments have also resulted in contaminated site investigations to determine the remaining levels of contamination and any further remediation required. In all cases residual contamination is present but not considered to be mobile and remediation has involved removal of soil to managed landfill and creating an impervious layer across the site. Design and construction methodology has retained â€˜site sealâ€™ to prevent contact with contaminated material. 6.2.3.4

Former Ammunition Factory, Mt Eden

The reports reviewed in detail are as follows: -

Pattle Delamore Partners, Apr 2003. Letter Report: Normanby Mews Residential Development, 30 Normanby Rd, Site Validation Report. Addressed to Auckland City.

Pattle Delamore Partners, Jun 2004. Letter Report: Assessment of Effects on Groundwater. Addressed to ARC.

Pattle Delamore Partners, Nov 2004. Letter Report: Groundwater Monitoring Consents 26096 and 28086. Addressed to ARC.

Pattle Delamore Partners, May 2006. Letter Report: Groundwater Monitoring Consents 26096 and 28086

An ammunition factory (later used to manufacture plastic containers) is known to have occupied the corner of Normanby Road and Enfield Street from 1885 to 1985. The site included a shot tower which has been preserved. A full contaminated site investigation was completed in 2003, and reported in compliance with the MfE Contaminated Land Management Guidelines and included: reports on detailed site investigations (soil and groundwater); remedial action plan; site validation report; and the ongoing monitoring and management plan. Investigations found the highest levels of contamination were located around the shot tower with lead and arsenic concentrations across the site above residential criteria. Groundwater flows in a north-west direction across the site. Trace levels of arsenic and di-n-butylphthalate were detected in groundwater (below ANZECC guideline levels). 6.2.3.5

2010 Geotechnical Site Investigation

The following provides a summary of the 2010 Geotechnical Site Investigation for KiwiRail and ARTA and included a limited sampling and analysis program for contamination. The bore logs and figures from this investigation are included in Appendix D. The scope of the contamination sampling element of the investigation included the drilling of eight boreholes at six locations (referred to as bore hole sites) using either open barrel cores or wash drilling. Soil sampling was undertaken to a maximum depth of 2.5 m, with one to two samples being collected across the 2.5 m profile for laboratory analysis. Soil samples were analysed for the following parameters: -

pH, exchangeable acidity.

Chloride, sulphate, sulphide, sodium, magnesium, calcium, potassium.

Redox potential, soil resistivity.

Semi-volatile organic compounds (SVOCs).

Total petroleum hydrocarbons (TPH).

2010 Geotechnical Site Investigation (Factual Report), APB&B, 19 April 2010.

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Heavy metals (arsenic [As], cadmium [Cd], chromium [Cr], copper [Cu], mercury [Hg], lead [Pb], nickel [Ni], zinc [Zn]).

Groundwater samples were collected from eight locations (MB1a, MB1b, MB3a, MB3c, MB4a, MB4b, MB6a); refer to Appendix D for these borehole locations. Monitoring well depths ranged in terms of total depth from 5.0 m bgl (at MB3c) to 55.6 m bgl (at MB4a). These locations were sampled and tested for the following parameters: -

pH, conductivity, total alkalinity.

Total dissolved solids.

Chloride, sulphate, sodium, magnesium, calcium, potassium.

Carbonate, bicarbonate.

Temperature.

SVOCs.

TPH.

Soluble heavy metals (As, Cd, Cr, Cu, Hg, Pb, Ni, Zn).

Groundwater results from MB1b, MB3c and MB4b were considered most relevant for the CRL CLA based on the depth screened. Location MB5b was also a relevant location although no groundwater results were available. Environmental testing / analysis reported strong odours at near surface (< 1 m) within borehole MB1 which could not be identified. The odours dissipated quickly while in the field and did not appear to feature in the analytical results; however, it should be noted that TPH<C7 and benzene, toluene, ethylbenzene, and xylenes (BTEX) where not analysed. For the purposes of the 2010 work, no criteria were selected for comparison to the soil or groundwater results. A summary of the results of the 2010 investigation is included in Table T4 and Table T5 of Appendix A. Locations of the investigation are also included in Appendix D. Samples were sent to the Hill Laboratories Ltd (Hills) for analysis, using methods consistent with the current CRL CLA. Filtering occurred in the laboratory for metals analysis which, whilst not best practice, is unlikely to detract from the reliability of the results. At location MB1, the two tunnels are deep and therefore further characterisation of the odour identified is not considered necessary. Odour is considered in the 2012 Air Quality Assessment; Field screening of results using a PID were not available for this work. The bore logs were reviewed to show geology (including depth of fill) to the proposed depth of the CRL as part of scoping of the Stage 2 ESA (2012 site investigation works). Based on available data, location, and screened depth, several groundwater monitoring wells were identified as being potentially important for characterisation of contamination and have been utilised in the current investigation. Monitoring well MB5b was included in sampling under this CRL CLA, as were MW11, MW35, MW45, and MW103. Results Review â€“ 2010 Data Although no assessment criteria were selected in 2010, the data from the 2010 study were compared with criteria selected for the 2012 ESA. Minor exceedences above the selected assessment criteria for copper and chromium were reported at three locations (two locations for copper [MB1a and MB1b] and one location for chromium [MB4a]). In addition, DEHP was found in MB1b at concentrations in excess of selected criteria. As previously noted, this may be representative of historic contamination but could also represent laboratory contamination. Additional future investigation is recommended to further evaluate the groundwater exceedences.

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Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Summary of Environmental Report Findings

The following risks of contamination were identified from the above reports: The Downtown Shopping Centre and Zurich House have potential for contamination resulting from the foreshore reclamation. -

There is a low risk of contamination from storage of a diesel tank in the basement at Zurich House.

The former petrol station has been remediated and validated as below acceptance criteria.

The former timber treatment site appears to have a low potential for migration of contaminants, however this site is outside the CRL designation and is only included for completeness.

The former ammunitions factory appears to have a low potential for migration of contaminants, however this site is outside the CRL designation and is only included for completeness.

The findings of the 2010 Geotechnical Investigation relating to contamination remain relevant and have been incorporated into this report. It is noted that selected locations (MB1b, MB3c, MB4b and MB5b) do provide relevant data around cut and cover sections, identified areas of fill to be disturbed (for the installation of shafts etc) and the source zones of groundwater removed during the construction process proposed under the 2012 Concept Design Report. No exceedences were identified for soil results when compared to assessment criteria provided in Table T4 of Appendix A.

6.2.4

Site Inspection

Inspections of the CRL were undertaken and details are listed in Table 2 above. The inspections consisted of a walkover of publically accessible areas together with observations from trains passing through the study area. The objective of the site inspections was to identify obvious features and land uses which may have contributed to the potential contamination of soil and/or groundwater. The inspections were conducted subsequent to a review of council information, to enable a targeted and informed inspection of properties both on and adjacent to the CRL. For ease of referencing in this report the site inspections have been divided into the following sections in Table 5: Table 5: CRL Site Inspection

Observations - CRL Inspection CH0 to CH1000 – Britomart to Wellesley Street A number of serviceable geotechnical/hydrological monitoring wells were observed at Britomart railway station from the Britomart development. Plans obtained from council records were used to identify well locations that could be utilised for the Stage 2 ESA site works. Well depths were determined using a dipping instrument to identify each well’s usability. Several wells were found to be screened in the fill/reclaimed sediment which is the target zone for contamination. This section of the CRL is high density commercial office/retail/accommodation and land-use activities generally pose low contamination risk. Albert Street appears to have been built up with fill adjacent to the Crowne Plaza on Albert Street. CH1000 to CH1600 – Intersection of Wellesley Street and Albert Street to south end of Vincent Street This section of the CRL is predominantly commercial office buildings of low contamination risk, however a liquor store located on the corner of Pitt and Vincent Streets was previously a garage and petrol station. Evidence of several monitoring wells was observed at this location. CH1600 to CH2100 – Intersection Vincent and Pitt Streets to south end of Mercury Lane An ambulance station and a fire station are located on opposite sides of Pitt Street together with a large office building, places of worship and other commercial/office buildings of low risk. The CRL continues beneath office/commercial buildings across K-Road to Canada Street via Mercury Lane. An old cemetery is located approximately 200 m to the east of the CRL (also recorded as also being a closed landfill - Asquith). A visual observation of the cemetery did not identify any features of interest, other than the fact that cemetery is elevated significantly from the depth of the CRL and is unlikely to impact groundwater within the CRL designation footprint.

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Observations - CRL Inspection CH2100 to CH3000 â€“ Canada Street to Intersection of Flower Street and Shaddock Street Canada Street is commercial with very little indication of potential for contaminating activities. The Central Motorway Junction (CMJ) passes through a cutting and is therefore unlikely to be impacted by historic land-use or filling activities. The CRL then crosses Upper Queen Street, deep beneath commercial properties through to Symonds Street. Basque Park and three other listed HAIL sites were also inspected and are considered to be sufficiently downgradient from Newton Station to not warrant further consideration. WaterCare facilities occupy a large property at the corner of Symonds Street and Mt Eden Road where water towers/reservoirs are located. The CRL then passes under more commercial/light industrial properties to Shaddock Street. There is a vehicle workshop at 30 New North Road (corner of Flower Street), directly over the CRL which is at a sub-strata level at this location. CH3000 to CH3200 Shaddock Street to connections with the NAL, Eden Terrace This area comprises a mix of Commercial/Industrial and some high density residential. No evidence of the former rail marshalling yards adjacent to the north of Mt Eden Station was observed. This area has been replaced by industrial/commercial units, including a timber yard (but still contained within the NAL designation). A number of industrial based historic land-use activities have been identified in this area due to its proximity to the then-Auckland township. The former ammunition factory located off Normanby Road, opposite Lauder Road is listed as a site of historical significance by Auckland Council due to a steel shot tower structure remaining on the site. A plaque records that the munitions factory was for sport and recreational hunting purposes, which conflicts with other published information. This is discussed further in the Media Section in Appendix E. The residential units at the site of the former sawmill and timber treatment plant were observed. One monitoring well was observed on the road verge in Enfield Street adjacent to Normanby Road relating to this development. Significant re-contouring of land on the southern side of the NAL is evident, with some vertical batters as much as 5 m in height. The area identified for the construction staging yard (referred to as Worksite A in CDR) was inspected. This area covers two blocks and is bounded by New North Road, Portage Road, Ruru Street and the NAL. The inspection identified properties and land-uses where activities of interest are undertaken. These include: a printing warehouse, automotive workshops (x 5) and a metal fabrication workshop. A number of buildings were identified to have asbestos roofs and are likely to contain other hazardous materials. CH3350 to CH3730 â€“ Porters Ave to Dominion Road This area predominantly comprises Commercial/Industrial land-use. Most of the buildings on Haultain Street are elevated above the level of the NAL rail tracks and consist of commercial premises and an engineering workshop. There is a printing company on the corner of Porters Ave and Fenton Street. The last building on Haultain Street (No. 14) is level with the NAL rail tracks and consists of commercial warehouse type buildings. Surface runoff is toward the tracks and the presence of the printing company and engineering workshop pose a low to medium level of risk of contamination in this area. The residential properties on Brentwood Ave are level or slightly higher than the rail tracks. There is evidence of small scale vegetable gardens behind the Seventh Day Adventist Church (35 Brentwood Ave). The Church itself is lower than the garden and NAL rail tracks.

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6.3

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Potential Contaminant Sources

From the Stage 1 ESA findings, using multiple lines of evidence, the following primary locations were identified to have had historic use that may have had an adverse impact on soil and / or groundwater. These properties have been grouped into three primary risk categories to assist in classifying their effects (assessed in Section 7.0) as follows: -

Tier 1, relates to locations where contamination has been identified or is likely based on historic land-use and has the potential to be uncovered during the construction phase.

Tier 2, relates to locations where the identified properties are either on or adjacent to the alignment and: a.

contamination was previously identified and has been remediated and validated as suitable for its existing land-use, or

considered to have a low risk of contamination being present based on its current or historic land-use.

Tier 3, relates to locations where contamination may be present from an existing or previous land-use but present little or no risk. This is because they: 

are a significant distance from the CRL designation footprint, or



will not be subject to any construction works associated with the CRL and are unlikely to have any migration of contaminants to the CRL construction works, or



have been remediated and validated for their existing land-use and do not pose a risk for migration of contaminants to the study area.

Tier 3 sites have been reviewed as part of the Stage 1 ESA because of the potential for migration of contaminants (e.g., landfill gas and groundwater contamination can migrate long distances) and the need to demonstrate that the associated risks have been considered for the CRL. A number of other potential sources, not specifically identified within the vicinity of the designation footprint, include activities such as small quantities of dangerous goods, use of old electrical transformers, storage tanks for auxiliary power supplies in office building basements, dry cleaning chemicals and historic activities. 6.3.1

Tier 1 Properties

These properties are either located directly on or immediately adjacent to the designation footprint where cut and cover or top down construction activities are anticipated (as defined by Figure F2, Appendix A). -

Reclaimed Foreshore Land, Britomart and Queen Elizabeth II Square (includes fill potentially containing hydrocarbons, asbestos, gasworks waste, coal ash and heavy metals).

Dangerous Goods Basement Storage (aboveground storage rank) – Zurich House (21 Queen Street).

Uncontrolled fill (7, 12 and 21 Queen Street).

Uncontrolled fill and process contaminants (coal ash, coal tar/gasworks waste) – cut and cover. (Lower Albert Street, Albert Street, Beresford Street). 

6.3.2

Road corridors within the designation footprint (hydrocarbons, coal tar, coal ash, heavy metals) Tier 2 Properties

Sites Previously Assessed, Remediated and Validated -

Former Timber Treatment Plant 

Former timber treatment plant now developed as residential apartments (Enfield Street and Normanby Road).

Former Ammunitions Factory 

Former ammunitions factory at Mt Eden (Enfield Street & Normanby Road).

Sites considered to have low risk of contamination based on current or historic land-use -

The remainder of the CRL designation footprint outside those areas listed under Tier 1 above where anticipated cut and cover or top down construction will occur: 

Evidence of uncontrolled fill along the entire CRL (at varying depths).

Rail Marshalling Yards

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Former rail yards adjacent to Mt Eden Station, now occupied by a timber storage yard (19-21 Shaddock Street).

Note: this has been included in this report for completeness but is not inside the CRL designation footprint. -

Rail Line – NAL designation. 

Arsenic (unknown source) identified in TP107 opposite the former ammunitions factory.



General fuel leakage from locomotives.



Creosote treated railway sleepers.

Note: the existing NAL has been included in this report for completeness but works within this existing rail designation are not included as part of the CRL NoR. -

Existing commercial properties in Newton / Eden Terrace / Mt Eden / Grafton. 

6.3.3

Commercial properties identified in Auckland Council HAIL database, from Auckland Council’s property LIM reports or from site inspection (note that text in ‘quotation marks’ is quoted from Council’s Licensing and Compliance search information). 

6-10 Ngahura Street (unknown land-use activity – identified on LIM report).



1 Ngahura Street (‘chemical products, fuel transport and specialised repairs to vehicle’).



11 Water Street (printers, likely storage of dangerous goods).



2 Porters Ave (‘auto panel beaters’).



4 Porters Ave (metal fabrication workshop – identified during site visit).



2 Haultain Street (mixed business between 1968 and 1975 – identified on LIM report). Tier 3 Properties

A number of other potentially contaminated sites, identified outside the designation footprint were not considered further as they are down gradient, have already been remediated, or are at a sufficient distance from the designation footprint that contamination is highly unlikely. These sites include former petrol stations, dry cleaners, dangerous goods storage, and Aotea Square and Basque Park. As part of the future preparation of resource consents, a re-evaluation should be conducted of the up gradient sites to verify these assumptions once additional hydrological information is available from site investigations associated with either preliminary or detailed design. A list of these sites is included in Appendix E. Based on the Stage 1 findings as summarised above, those sites with contamination risk identified as moderate or high were further evaluated during the Stage 2 ESA.

6.4

Results from Preliminary Stage 2 ESA (2012)

As described in Table 2, test pits and bore holes were advanced at selected locations along the CRL designation, targeting the proposed station areas and areas of anticipated cut and cover in the vicinity of Britomart and Mount Eden. Soil samples were collected from the test pits and boreholes and submitted for laboratory analysis. Two new groundwater monitoring wells were established and sampled, and five existing groundwater monitoring wells were sampled. Samples were analysed by an accredited laboratory (Hill Laboratories). The results of the laboratory analysis were compared against the adopted soil assessment criteria (refer to Table 1 and presented in Tables T1 and T2 of Appendix A). Laboratory analytical reports are provided in Appendix E. A summary of results is provided below. The sample register provided in Appendix A summarises the samples and analytical parameters for each sample in the program. For an assessment of potential risk indicated by these results in the context of the CRL project, together with landuse information from the Stage 1 Environmental Assessment, refer to Table 7 in Section 7.0. 6.4.1

Soil

A total of 41 soil samples from boreholes and test pits were analysed by Hill Laboratories. Results are discussed with comparison to the Commercial/Industrial criteria set out in the NES. Schedule 10 Discharge Criteria and Schedule 11 Background values for permitted activities under the Auckland Regional Plan (referred to as Schedule 10 and 11) were also included for comparison purposes only.

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Heavy Metals

Analysed heavy metals included a selection of the following: arsenic, boron, cadmium, chromium, copper, lead, mercury, nickel and zinc. A total of 41 primary soil samples were analysed. Arsenic concentrations were generally below the assessment criteria for NES 2011 Commercial/Industrial (70 mg/kg), with the exception of TP107_0.9-1.0 mg/kg which reported a concentration of 308.8 mg/kg within the rail corridor, which exceeds the NES criteria by approximately more than four times. All other soil samples analysed for arsenic were below assessment criteria levels or below the laboratory Limit of Reporting (LOR). Eleven samples were analysed for boron and all were below assessment criteria levels. Of those samples analysed for boron, samples TP104_0.6-0.7 and TP107_0.9- 1.0 were above the laboratory limit of reporting (LOR, and all others were below the LOR. Concentrations of cadmium were below assessment criteria for all soil samples analysed and below laboratory LOR for half the samples analysed. Total chromium (III + VI) concentrations were compared against the chromium VI NES 2011 Commercial/Industrial guideline value (6,300 mg/kg). All sample concentrations were well below the assessment criteria with the highest recorded concentration at BH154_3.0 – 3.2 (114.5 mg/kg). Copper concentrations for all samples were above the laboratory LOR but well below the NES 2011 assessment criteria (>10,000 mg/kg) with the highest recorded concentration of 568.9 mg/kg at TP104_0.2 which was also above the Schedule 10 criteria. All samples analysed for lead had concentrations below the NES 2011 assessment criteria (880 mg/kg) but all were above the laboratory LOR. Two samples reported concentrations above the Schedule 10 criteria of 250 mg/kg as follows: BH167_0.1 – 0.2 (311.5 mg/kg) and TP109_0.2 (288.9 mg/kg). In total, 38 samples were analysed for mercury and 16 samples were above the laboratory LOR. All samples analysed for mercury were well below the assessment criteria (1,800 mg/kg) with the highest recorded concentration at TP108 0.2 (4.8 mg/kg). Forty-one samples were analysed for nickel and zinc. Criteria for nickel and zinc have not been provided under the NES. Although concentrations exceeded the Schedule 10 criteria (11 times for nickel and two times for zinc), these concentrations were all below the background level for volcanic soils. The highest nickel concentration recorded was at BH134 0.1–0.2 (264.7 mg/kg). The highest recorded concentration of zinc was at sample location TP108_0.2 (878.1 mg/kg). All samples were above the laboratory LOR with the exception of one nickel sample. 6.4.1.1.1

Background (Heavy Metals)

Concentrations for arsenic were above maximum background levels for volcanic soils in Schedule 11 for the following five locations: BH167_0.1-0.2, BH167_1.0-1.2, TP107_0.3, TP107_0.9-1.0, TP108_0.2. Cadmium reported one sample to be above background levels (TP104_0.2) at 3.4 mg/kg. Copper was above the maximum Schedule 11 criteria of 90 mg/kg in five samples. Lead was above background in 11 samples analysed. Three samples were above background concentrations for mercury. Results for boron, chromium, nickel and zinc were all below background levels. 6.4.1.2

VOCs/SVOCs

Three samples were analysed for chlorinated hydrocarbons (CHCs). All samples were below the LOR. Eleven samples were analysed for a VOC and SVOC screen of analytes, all of which were below the LOR. 6.4.1.3

TPH

Forty-one samples were analysed for TPH. All sample results for TPH (C7 – C9) and (C10 – C14) fractions were below the assessment criteria and the laboratory LOR. TPH range (C15-C36) reported detectable concentrations below the assessment criteria in eight locations. 6.4.1.4

BTEX Compounds

In total, 27 samples were analysed for BTEX compounds. All samples were below assessment criteria and the laboratory LOR.

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PAHs/ Phenols

The primary screening criteria for PAH compounds is the B(a)P Toxic Equivalency Factor (TEF). Two locations exceeded the NES criteria for this value (BH167_0.1-0.2 and TP104 0.6-0.7). Forty-one samples were analysed for PAHs. BH116_0.5-0.6, BH167 0.1-0.2, TP104 0.2, TP104 0.6-0.7, TP108 0.2 and TP109 1-1.1 recorded elevated concentrations of B(a)P TEF above the Schedule 10 criteria. All other samples had PAHs concentrations either below or slightly above the laboratory LOR. TP104_0.6-0.7 reported a B(a)P result of 33.43 mg/kg and Total PAH concentration of 418 mg/kg. BH167_0.1-0.2 reported a B(a)P result of 33.82 mg/kg and Total PAHs of 393.5 mg/kg. A total of 11 samples were analysed for either speciated or total phenols. All samples reported concentrations below the laboratory LOR. 6.4.1.6

Pesticides

Twelve samples were analysed for organochlorine pesticides. All samples selected for analysis were below the criteria and LOR. 6.4.1.7

Asbestos

Eighteen near-surface soil samples were analysed for asbestos by Dowdell Associates (Dowdell Laboratory). All samples reported â€˜Asbestos not detectedâ€™. 6.4.2

Groundwater

Groundwater samples were collected from seven monitoring wells in the vicinity of Britomart and Shaddock Street on the 19 April 2012. Assessment criteria used for comparison with sample results are the ANZECC (2000) marine water (80%) and the fresh water (80%) guidelines. New Zealand Drinking Water Standards (NZDWS) (see Table T2 in Appendix A) were included for comparison purposes only. 6.4.2.1

Heavy Metals

Groundwater samples (excluding MW5b) were field filtered and analysed for arsenic, cadmium, chromium, copper, lead, mercury, nickel, and zinc. Samples from MW5b were filtered at the laboratory as samples were heavily laden with fine sediment which could not be field filtered. Samples collected from MW35, MW45 and MW103 required dilution due to high levels of sodium and chloride for heavy metals analysis (due to proximity to the harbour). This resulted in some laboratory LORs being reported as higher than what is normally achieved and above the assessment criteria. Across all three monitoring wells, cadmium, chromium and copper laboratory LORs were higher than each respective parameters assessment criteria. MW35 and MW45 also reported the zinc laboratory LOR as higher than the assessment criteria. MW45 reported lead and nickel laboratory LORs as higher than the assessment criteria. Groundwater samples collected from MW11 and MW35 returned concentrations of arsenic above the NZDWS assessment criteria (0.01 mg/L) which is not applicable for marine water. Copper concentrations exceeded the fresh water criteria (0.0025 mg/L) at MW5b with a concentration of 0.07549 mg/L, MW11 and MW105 samples were below the laboratory LOR and assessment criteria. Concentrations of lead exceeded the marine (0.012 mg/L) criteria at MW103 with a concentration of 0.01562 mg/L. Nickel concentrations did not exceed the relevant criteria. Laboratory analysis results for mercury at all monitoring wells were below the assessment criteria and in most cases the laboratory LOR. 6.4.2.2

BTEX Compounds

Only MW35 and MW5b samples were analysed for BTEX compounds. All results are well below the assessment criteria and the laboratory LOR. 6.4.2.3

PAHs/ Phenols

All monitoring well samples were screened for PAHs. All results were below the laboratory LOR. Total phenols were screened for in samples from MW103, MW11, MW167, and MW35. The total phenols concentration at MW103 was below an elevated laboratory LOR (due to matrix interference), concentrations at MW11, MW167 and MW35 were 0.024 mg/L, 0.0022 mg/L and 0.024 mg/L respectively. A criterion was not

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selected for total phenols, however the ANZECC (2000) marine water (80%) and the fresh water (80%) guidelines for phenol (0.720 mg/L and 1.200 mg/L respectively) indicate that the LOR (detection limit) was considered acceptable and all results were below these criteria. 6.4.2.4

Cyanide

Samples from monitoring wells MW103, MW11, MW35 and MW45 were analysed for total cyanide. MW103, MW35 and MW45 returned results below the laboratory LOR and assessment criteria. The concentration of total cyanide for MW11 was 0.0029 mg/L, below the lowest assessment criteria of 0.014 mg/L (ANZECC (2000) marine water (80%)). 6.4.2.5

TPH

All groundwater samples were analysed for TPH. Analytical results for TPH concentrations in groundwater were reported below the laboratory LOR in all monitoring wells and applicable assessment criteria. 6.4.2.6

Other Analytes

MW45 samples were also screened for fungicides, herbicides, pesticides, and PCBs. All results for these groups of analytes were below the laboratory LOR and any applicable assessment criteria. The SVOC Bis(2-ethylhexyl)phthalate (DEHP) also known as Dioctyl phthalate (DOP) was above the NZDWS (9 µg/L) at location MB1b on Mayoral Drive. This represents an exceedence of almost four times the selected criteria. The source is unknown and was not specifically identified in the Stage 1 ESA; however, DEHP is a chemical plasticiser related to the manufacture of PVC products. It is largely non-soluble in water, therefore retarding its mobility in soil. It is slightly hazardous to skin and eyes (irritant). A number of studies indicate possible links to obesity effects, effects on sexual organs and cardiovascular effects in humans as a result of inhalation and ingestion. It should be noted that elevated concentrations of DEHP shown in sample analyses are potentially a result of DEHP leaching from new tubing used in the field or laboratory rather than from actual groundwater contamination. Additional evaluation during future investigations may provide clarification (e.g., as part of detailed design). 6.4.3

Site Characterisation Summary

Four soil sample locations reported elevated concentrations of contaminants above the NES criteria for Commercial / Industrial land-use. Arsenic was present in TP107 at a depth of 0.9-1.0 m bgl at a concentration nearly four times the NES criterion. The origins of this contamination are unknown although it is located on the opposite side of the NAL, adjacent to the former ammunitions factory and is also nearby the former timber treatment site (refer to Figures F2). PAHs were analysed as 16 priority compounds. Locations BH167 and TP104 reported B(a)P TEF above the NES. 9 BH167 was beneath a roadway. A ‘RossPlot’ analysis was undertaken on these two concentrations and the origins of PAH at TP104 (former rail yard) at a depth of 0.6 - 0.7 m appear to be very similar to that of BH167. The analysis showed the samples to be indicative of coal ash resulting from moderately complete combustion decomposition, and therefore of relatively low risk to human health or the environment, although still above the NES. Areas with NES exceedences in the soil will require additional characterisation as part of detailed design to more fully delineate the extent of contamination. Groundwater will be addressed in future resource consents, however, results were obtained where possible to identify contaminants which may have leached into groundwater. 10

Results were compared to the ANZECC criteria for 80% species protection, which is consistent with ALWP consenting requirements as well as the NZDWS (2005) (see Table T5, Appendix A). Concentrations of lead, nickel and zinc were present slightly above the marine criteria for MW103. MB5b exceeded the freshwater criteria for copper by one order of magnitude, and was just above the criteria for zinc.

‘Are we wasting money on some PAH cleanups?’ CleanUp09, Adelaide 2009, Ross McFarland et al, ENSR/AECOM. Australia and New Zealand Guidelines for Fresh and Marine Water Quality, 2000.

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Waste Disposal and Leachability – 2012 Stage 2 ESA Data

This section is included for information purposes only and is not specifically required for NoR. Results from soil sampling data collected from the Stage 2 ESA were compared to the Class A and B Landfills criteria, MfE (May, 2004), as shown in Table T3 of Appendix A. Limited analysis assessing leachability was conducted to assist in waste classification and disposal. The selected samples were analysed in order to ensure this data was collected within approved laboratory holding times to enable use of this data. Ten samples were analysed for targeted suits of heavy metals and PAHs based on primary results. Most results showed a low level of leachability; however, disposal will require further assessment as part of detailed design as some primary results were elevated above the Landfill Class A Criteria for Cleanfills (MfE, May 2004). Specific landfill criteria have not been included as part of the scope of this review. Further assessment works will also facilitate classification of material into cleanfill, managed fill and contaminated fill, requiring management on-site or off-site disposal.

6.5

Preliminary Conceptual Site Model

A conceptual site model (CSM) is the qualitative description of the plausible mechanisms by which human or environmental receptors may be exposed to the CoPCs. A CSM was developed to provide an overall understanding of the potential impacts from the development. For an impact to be considered possible, some mechanism (‘pathway’) must exist by which the CoPC from a given source can reach a given receptor. These ‘source-pathway-receptor’ relationships are often referred to as ‘pollutant linkages’. Where a linkage exists then the significance of potential exposure needs to be considered in more detail. Key components of the qualitative description for the CSM include: -

understanding the environmental setting in which the CoPCs are present, in which contamination migrates, and in which receptors are located. This understanding forms the basis of understanding the potential linkages between contaminant sources, pathways and receptors;

determining the source of and extent of CoPCs;

identifying receptors that may have potential pollutant linkages with site based CoPCs;

identifying the pathways that may link the CoPCs to receptors; and

completion of a qualitative assessment using all of the above information to assess the credible linkages (‘pollutant linkages’) between CoPCs, identified pathways and identified receptors.

A CSM was developed for the CRL based on the type, location and migration pathways of contamination along the CRL designation using all the available data from both the 2010 investigation and 2012 ESA. The following Table 6 identifies the potential sources, pathways and receptors including potential pollutant linkages. Table 6: Conceptual Site Model

Consideration

Details

Known sources of material/activities within the study area

Impacted fill beneath various roadways and NAL (coal ash, arsenic)

Potential sources of contamination

Potential sources of on-site contamination relating to the CRL include: Foreshore reclamation activates. Dangerous goods storage (including underground storage tanks). Demolition of buildings containing hazardous materials. Soils / rock capable of generating acidic conditions (acid sulphate soils). Gasworks derived fill (including coal tar). Historic rail activities. Placement of uncontrolled fill. Historic heavy industry activity adjoining the current NAL (timber treatment, ammunition manufacture).

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Consideration

Details

Potential transport mechanisms and exposure pathways for contaminants

Potential receptors of contamination

The nearest residents are located at various points along the CRL, immediately adjacent to the proposed activities.

Leaching or runoff from spoil material to be removed from the CRL, direct dermal contact or ingestion of contaminants in material during excavation, groundwater movement

Site workers and members of the public passing near the construction area could be exposed to contamination. Potential environmental receptors of contamination include: -

Groundwater beneath the CRL and the wider stormwater catchment along the CRL.

These potential pollutant linkages are discussed in more detail in Section 7.0 where they are assessed in terms of their potential effects, associated potential risk, and related mitigation measures.

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Assessment of Effects on the Environment and Options for Avoiding, Remedying or Mitigating Adverse Effects

The actual and potential effects in relation to contamination have been evaluated based on the findings of the Stage 1 and Stage 2 ESA, as described in Section 6.0. The section below describes positive and adverse effects related to construction and Table 7 lists activities/locations, contaminants of potential concern, potential environmental effects and options for avoiding, remedying, mitigating potential adverse effects. Note that air quality effects are discussed and addressed in the 2012 Air Quality Assessment;. The air quality report addresses the creation and management of airborne dust and odour emissions of potential contaminants resulting from the construction activity. Refer to the 2012 Air Quality Assessment report for further consideration of this effect and options for avoiding, remedying or mitigating this effect, particularly in regard to public exposure.

7.1

Positive Effects

Positive effects are likely in the vicinity of the near surface developments (cut and cover, top down mining and surface operations) as follows:

7.2

Removal of contaminated material will have a positive effect that will enhance the wider environment. Where material containing leachable contaminants impacting groundwater and surface water is removed, there is a potential to reduce concentrations of contaminants in the regional area.

Dewatering of contaminated water has the potential to slightly decrease concentrations of contaminants in the localised groundwater and regional aquifer.

Adverse Effects: Construction

Adverse effects may occur when there is a link between the source, pathway, and receptor. During construction, there is potential for such linkages to be created during soil disturbance. Only those potential adverse effects which are considered likely, based on the CLA findings, are addressed. Any additional affects identified outside what is identified below will need to be addressed in the EMP and where appropriate, considered in future resource consents.

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Assessment of Adverse Effects for Construction

Areas which have potential adverse effects for construction along the CRL are summarised in Table 7 below. Table 7: Activities and Contaminants of Potential Concern â€“ Assessment of Adverse Effects, Construction

Activity/ Location

Contaminants of Potential Concern (CoPC)

Overall Risk / Comment

Potential Effects

Options for Avoiding, Remedy or Mitigating Effects

Previous environmental investigations of sites located on reclaimed land have shown elevated concentrations of heavy metals and PAHs in soils and groundwater as well as asbestos within demolition rubble. Boreholes have shown reclamation fill extends to depth of approximately 2 to 5 m. Some evidence points to as much as 10 m in some areas. Refer to council search file references: 542-3582 Pt 1 and Pt 2, 20885 Pt 4 (ARC report), File No. 17788 Part 1, Tonkin & Taylor, Remedial Action Plan, June 2004; File Ref: 17788 Part 1, T&T, Assessment of Environmental Effects, Sept 2005;

Medium

Potential for acid sulphate soils to be present

Low-Medium

Observation

Foreshore Reclamation â€“ Britomart/ Lower Albert Street Reclamation (approximately 1860 to 1880s) Uncontrolled fill

Asbestos, heavy metals, TPH/BTEX, PAH

Dermal contact, ingestion and inhalation exposure to workers and members of the public Improper soil management Creation of preferential pathways Sediment run-off

Marine sediments

Acid sulphate soils

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Adverse effect on building materials Increased soil disposal requirements.

Construction Environmental Management Plan (CEMP) to control exposures (hierarchy of control, soil and groundwater classification and management) Seal trenches / excavations during civil works and implement dust, erosion and stormwater control plans # Further investigation #

Further investigation - If present, will be managed under CEMP and detailed design

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Activity/ Location Buildings within or adjacent the designation footprint.

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Contaminants of Potential Concern (CoPC) TPH/BTEX, PAH, Asbestos, PCBs, solvents, paints, heavy metals, other hazardous substances

Observation Office building basements often contain diesel and or oil storage tanks and associated pipes. Recorded at 21 Queen Street (File Ref. 5-42-3919, Tonkin & Taylor, Contamination Desk Study, 5 Sept 2007; File Ref. 19296 Pt 3, T&T, Site Validation Report, Nov 2007).

Overall Risk / Comment Medium Likely to be encountered along entire CRL.

Older buildings may contain asbestos (e.g. http://www.techlink.org.nz/case-studies/technologicalpractice/Materials/britomart/) and equipment which contains PCBs (transformers, capacitors, fluorescent light ballasts).

Potential Effects

Options for Avoiding, Remedy or Mitigating Effects

Dermal contact, ingestion and inhalation exposure to workers and members of the public Creation of preferential pathways Contaminated stormwater run-off Disposal of hazardous substances

Dermal, ingestion and inhalation exposure to workers and members of the public. Disposal of waste Creation of preferential pathways Contaminated stormwater run-off

Hazardous materials may be stored in buildings and require proper management/disposal.

Road Corridors (entire CRL) Coal tar and gasworks residues in sub-base of road

PAH, cyanide, heavy metals, phenols, ammonia

Potential for coal tar within road sub-grade. Evidence indicates that Auckland roads have been impacted although no specific detail was available on impact to roads within the CRL. Refer to a paper prepared for the New Zealand Transport Agency (NZTA) â€“ Reconstruction of coal tarcontaminated roads by in-situ recycling using foam bitumen stabilisation, September 2009. (http://www.nzta.govt.nz/resources/research/reports/388/ index.html). Coal tar beneath roads is an internationally recognised problem within the vicinity of former gas works sites. Material characteristic of coal ash (or similar) was found at BH167 which indicated signs of moderately complete combustion and likely low toxicity. Note that these sample results were not indicative of coal tar.

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Low-Medium Only a consideration for cut and cover sections and riser shafts. Areas most likely to contain coal tar are where the roadway has been filled/built up prior to placing the final tar seal or concrete surface. Elevated PAHs were identified in BH167.

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Activity/ Location

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Contaminants of Potential Concern (CoPC)

Observation

Overall Risk / Comment

Potential Effects

Options for Avoiding, Remedy or Mitigating Effects

Dermal, ingestion and inhalation exposure to workers and members of the public. Creation of preferential pathways Contaminated stormwater run-off Disposal of waste

Dermal, ingestion and inhalation exposure to workers and members of the public. Creation of preferential pathways Contaminated stormwater run-off Improper soil management

Former Petrol Station (Pitt Street) Storage of petroleum products (diesel and petrol)

TPH/BTEX, PAH, lead

Site has been remediated to meet soil acceptance criteria for commercial land-use.

Low Petroleum hydrocarbons generally are less dense than water and so are unlikely to affect the tunnel at this location.

General Offsite disposal of spoil. General excavation along CRL

Asbestos, TPH/BTEX, PAH, phenols, heavy metals, solvents, nitrates, UXOs, Acid sulphate soils.

Applicable at all locations where uncontrolled filling or other HAIL activities has occurred. This activity will be dealt with by future resource consents.

Medium

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Activity/ Location Dewatering of aquifer during construction. Legacy soil impact from identified land-use.

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Contaminants of Potential Concern (CoPC) TPH/BTEX, PAH, phenols, heavy metals, solvents, nitrates, acid sulphate soils.

Observation Applicable at all locations where HAIL activities have impacted the groundwater. This activity will be dealt with by future resource consents.

Overall Risk / Comment

Potential Effects

Options for Avoiding, Remedy or Mitigating Effects

Low-Medium

Dermal, ingestion and inhalation exposure to workers and members of the public Inappropriate disposal of contaminated groundwater. Creation of smear zones as a consequence of lowering the water table.

Dermal, ingestion and inhalation exposure to workers and members of the public Creation of preferential pathways Contaminated stormwater run-off Disposal of waste

Various Mt Eden Sites (includes Newton, Eden Terrace, Mt Eden and Grafton) Automotive Workshop (various locations)

Use and storage of petroleum products and hazardous substances

Hydrocarbons, PAHs, solvents, heavy metals

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Mechanical workshops (existing). No previous reports from council file notes. May have above-ground or underground waste oil storage tank. Automotive workshops typically store hazardous substances, including petroleum products, solvents, degreasers, and paints

Medium

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Contaminants of Potential Concern (CoPC)

Observation

Overall Risk / Comment

Potential Effects

Options for Avoiding, Remedy or Mitigating Effects

Former Rail Marshalling Yards, Mt Eden and Rail Corridor (NAL) Note: this assessment is provided for completeness in assessing the CRL, but works within this area are covered by the existing NAL rail designation

Rail yards, sidings and existing rail line

Asbestos, TPH, heavy metals (arsenic), solvents, creosote (phenols), PAHs.

No environmental investigations have been found for these sites in the site history review. There is potential for asbestos from train wheel breaks, although this is considered low risk of having occurred. No information on maintenance undertaken in the yards. Published literature from the New Zealand timber industry indicates that timber rail sleepers have (and continue to be) treated with creosote. Impact is likely to be localised to the immediate vicinity of the rail sleepers. Refer to:

Medium Stage 2 ESA sampling works did not identify asbestos contamination. Elevated arsenic (TP107) and PAH (TP104)

Dermal, ingestion and inhalation exposure to workers and members of the public Disposal of waste Creation of preferential pathways Contaminated stormwater run-off

http://www.insights.co.nz/products_processes_wpre.aspx

This activity is registered on the MfEâ€™s HAIL register (http://www.mfe.govt.nz/laws/standards/contaminants-insoil/hail-contaminants.pdf). TP107 is located within the NAL.

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Assessment of effects and appropriate mitigation will be confirmed as part of any future Outline Plan developed under the NAL designation for works in this area Mitigation may include use of the CRL CEMP to control exposures (hierarchy of control, soil and groundwater sampling / classification) Implementation of dust, erosion, and stormwater control plans # Further investigation .

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Activity/ Location

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Contaminants of Potential Concern (CoPC)

Observation

Overall Risk / Comment

Potential Effects

Options for Avoiding, Remedy or Mitigating Effects

Former Ammunition Factory, Mt Eden Note: this assessment is provided for completeness in assessing the CRL due to potential for migration of contaminants, but works within the adjoining NAL are covered by the existing NAL rail designation

Production of ammunition

Manufacture of plastic containers

Asbestos, Heavy Metals (particularly lead and arsenic), nitrates, UXOs.

Phthalates (di-nbutylphthalate)

Lead and arsenic only found in trace levels in groundwater after remediation. Highest concentrations found around the shot tower. Lead and arsenic above residential guidelines. Remediation included removal of some contaminated soil to landfill and reuse of other soil on site beneath building foundations, roads and pathways. Potential for asbestos from building materials. There was no specific evidence pointing to UXO but the possibility cannot be eliminated. Refer to Council file ref. 19296 Pt 1 (numerous consultant reports)

Medium Potential for migration to the NAL rail corridor.

Low levels of di-n-butylphthalate (below guideline levels) found in all groundwater wells on the former ammunition site. Refer to Council file ref. 19296 Pt 1 (numerous consultant reports)

Low

Dermal and ingestion exposure to workers. Contaminated stormwater runoff

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Dermal, ingestion and inhalation exposure to workers and members of the public. Disposal of waste Creation of preferential pathways Contaminated stormwater run-off

CEMP to control exposures (hierarchy of control, soil and groundwater classification and management) Seal trenches / excavations during civil works and implement dust, erosion and stormwater control plans # Further investigation . CEMP to control exposures (hierarchy of control, soil and groundwater classification and management) Seal trenches / excavations during civil works and implement dust, erosion and stormwater control plans

AECOM

Activity/ Location

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Contaminants of Potential Concern (CoPC)

Observation

Overall Risk / Comment

Potential Effects

Options for Avoiding, Remedy or Mitigating Effects

Former Timber Treatment Site, Mt Eden Note: this assessment is provided for completeness in assessing the CRL due to potential for migration of contaminants, but works within the adjoining NAL are covered by the existing NAL rail designation

Yard 6 â€“ boron dip (Harold Street)

Asbestos, Boron, PCP, heavy metals.

No known PCP treatment carried out on-site but PCP treated wood stored on-site uncovered. PCP contamination was in surface soils. Site also carried out heavy metal treatment of timber.

Low

Refer to Council file ref. 11798 Pt2 and Pt3 (numerous consultant reports including Pattle Delamore Partners RAP, May 2005; Contamination Investigation and Risk Assessment, May 2005).

Motor vehicle Workshop (Mary Street)

TPH/BTEX, PAH, solvents, other hazardous substances.

During site remediation, hydrocarbon contamination was found next to the garage site. Three diesel and petrol USTs were removed in 1995. Refer to Council file ref. 11798 Pt2 and Pt3 (numerous consultant reports including PDP RAP, May 2005; Contamination Investigation and Risk Assessment, May 2005).

Low

Copper, chromium, arsenic (CCA) treatment plant (corner Edwin Street and Normanby Road)

Copper, chromium, arsenic, PCP, phenols.

Contamination found at depths down to 6 m in the vicinity of the CCA treatment plant. Remediated by removing material to landfill and sealing remaining soil on-site. Groundwater showed a downward trend in contaminant concentrations and below consent trigger levels (soluble chromium, soluble copper, soluble arsenic).

Medium

25 July 2012 (Revision 4)

Refer to Council file ref. 11798 Pt2 and Pt3 (numerous consultant reports including Pattle Delamore Partners RAP, May 2005; Contamination Investigation and Risk Assessment, May 2005).

Dermal, ingestion and inhalation exposure to workers and members of the public. Creation of preferential pathways Contaminated stormwater run-off

AECOM

Activity/ Location Plywood factory

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Contaminants of Potential Concern (CoPC) TPH, lead

Observation Factory was covered and had a concrete floor. Contamination likely limited to soakage pits and drainage trenches.

Overall Risk / Comment

Potential Effects

Options for Avoiding, Remedy or Mitigating Effects

Low

Dermal, ingestion and inhalation exposure to workers Contaminated stormwater run-off

Dermal, ingestion, and inhalation exposure to workers and members of the public. Creation of preferential pathways Contaminated stormwater run-off

Various Printing Sites

Printing

Solvents, acids, alkalis, heavy metals

No known contaminated site investigation conducted; however, activity is listed on HAIL (information provided by Auckland Council, Licensing and Compliance).

Low

25 July 2012 (Revision 4)

AECOM

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Notes: # Further investigations as part of future site investigations to support preliminary and / or detailed design and resource consents. Abbreviations: Total Petroleum Hydrocarbon (TPHs), Monocyclic Aromatic Hydrocarbon (MAHs), Polycyclic Aromatic Hydrocarbon (PAHs), Polychlorinated Biphenyls (PCBs), Heavy Metals include 8 priority metals unless stated (arsenic, cadmium, chromium, copper, lead, mercury, nickel, zinc), Unexploded Ordnance (UXOs), Trichloroethylene (TCE), Tretrachloroethylene (PCE), Copper, chromium and arsenic (CCA).

A number of other potential sources, which were not specifically identified but which could be present, include activities such as small quantities of dangerous goods, storage tanks for auxiliary power supplies in office building basements, old high voltage electrical transformers, asbestos in building materials, dry cleaning chemicals and other historic activities. Effects from these contaminants would be addressed subsequent to further investigation should they be identified. These effects are not considered for NoR as their presence was not verified during the CLA. The above identified effects will be mitigated to address the health and safety of construction workers and the general public, together with environmental considerations. This will be addressed in the Preliminary Remediation Plan (PRP) which will form part of the EMP as outlined in the Environmental Management Framework (EMF); Assessment of Environmental Effects: Volume 3 Technical Reports: Appendix 1. Implementation of control measures during construction will be addressed and managed under the CEMP. Basic principles required for a CEMP will be included in the EMP as will a requirement for a Remedial Action Plan (RAP) and Hazardous Materials Removal Specification to form part of the CEMP at the time of construction once additional data gathered during detailed design has been incorporated.

25 July 2012 (Revision 4)

AECOM

7.4

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Operational Effects

Mitigation measures for the operational phase will be developed under the framework of the monitoring and management programme implemented during the construction phase and will address worker and public protection for areas where re-used contaminated soil may be excavated or contaminated groundwater may be encountered.

8.0

Conclusion

The Stage 1 and Stage 2 ESA have demonstrated that there is potential for contaminated soil and groundwater from past and current industrial activities conducted along the CRL designation. The primary contaminants of concern present above the NES for protection of human health are heavy metals (arsenic at TP107_0.9-1.0) and B(a)P (at two locations (BH167_0.1-0.2 and TP104 0.6-0.7). The results show contaminants are present at a limited number of locations; the majority of the soil and groundwater samples analysed returned concentrations below the NES. Based on the Preliminary Stage 2 ESA findings, the key potential adverse effects related to contamination requiring mitigation include: 1.

Exposure to workers and members of the public due to dermal, ingestion and inhalation exposure pathways.

Mobilisation of contaminants through the creation of preferential pathways.

Contaminated sediment runoff into stormwater.

Identified potential adverse effects relate to human or environmental exposure to contaminants. For example, workers may be exposed to elevated concentrations of contaminants during excavation activities, stormwater runoff carrying contaminated sediment could impact off-site areas, or members of the public could be exposed to contaminants carried in airborne dust (refer to 2012 Air Quality Assessment;)). Provided that the proper controls are put in place and implemented, adverse effects are readily mitigated. These controls are standard practice for contaminated sites in New Zealand and include implementation of dust and erosion control plans, stormwater management plans, and health and safety plans. Additional site investigation as part of future detailed design will assist in further minimising these risks. On-site monitoring of soil and groundwater quality during construction to assure that waste is properly classified will also minimise risk to site workers, the public and the environment. Other standard construction controls, such as limiting site access, will also be necessary. Positive effects are possible in that contaminated soil (and possibly groundwater) will be removed from the area.

25 July 2012 (Revision 4)

AECOM

9.0

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

References

A Guide to Management of Cleanfills. Wellington, Ministry for the Environment, January 2002. Are we wasting money on some PAH cleanups?, CleanUp09, Adelaide 2009, Ross McFarland, Anna Lundmark, Natasha Sheedy, Allesandro Battaglia, ENSR/AECOM. CBD Rail Link Study â€“ Geotechnical Factual Report, APB&B, 19 April 2010. Concept Design Report 2012 Contaminated Land Management Guidelines No. 1, (Reporting on Contaminated Sites in New Zealand) . Wellington, Ministry for the Environment, revised October 2011. Contaminated Land Management Guidelines No. 2, (Hierarchy and Application in New Zealand of Environmental Guideline Values). Wellington, Ministry for the Environment, revised October 2011. Contaminated Land Management Guidelines No. 5, (Site Investigation and Analysis of Soils) . Wellington, Ministry for the Environment, revised October 2011. Planning Overlay Map 1, District Plan. Auckland City Council, 2004. Guidelines for Assessing and Managing Contaminated Gasworks Sites in New Zealand. Wellington, Ministry for the Environment, August 1997. Guidelines for Assessing and Managing Petroleum Hydrocarbon Contaminated Sites in New Zealand. Wellington, Ministry for the Environment, revised October 2011. Health and Environmental Guidelines for Selected Timber Treatment Chemicals. Wellington, Ministry for the Environment, June 1997. Identifying, Investigating and Managing Risks Associated with Former Sheep-dip Sites, A guide for local Authorities . Wellington, Ministry for the Environment, November 2006 (MfE, 2006). Methodology for Deriving Standards for Contaminants in Soil to Protect Human Health. Wellington, Ministry for the Environment, 2011. National Environment Protection (Assessment of Site Contamination) Measure (NEPM). National Environment Protection Council (NEPC), December 1999. Resource Management (National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health) Regulations 2011. Wellington, Ministry for the Environment, October 2011.Schedule of Trees, Appendix 2 of the Auckland District Plan, Central Area Section. (Former) Auckland City Council, 2004.

25 July 2012 (Revision 4)

AECOM

10.0

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Limitations

This document was prepared by AECOM New Zealand Limited (AECOM) for Auckland Transport, as part of planning processes for NoR. Any advice, opinions or recommendations contained in this document should be read and relied upon only in the context of the document as a whole and are considered current to the date of this document. Any other party should satisfy themselves that the scope of work conducted and reported herein meets their specific needs before relying on this document. AECOM cannot be held liable for any third party reliance on this document, as AECOM is not aware of the specific needs of the third party. No other party should rely on the document without the prior written consent of AECOM, and AECOM undertakes no duty to, nor accepts any responsibility to, any third party who may rely upon this document. This document was prepared for the specific purpose described in our proposal dated 7 February 2012 and as agreed to by Auckland Transport. From a technical perspective, the subsurface environment at any site may present substantial uncertainty. It is a heterogeneous, complex environment, in which small subsurface features or changes in geologic conditions can have substantial impacts on water, vapour and chemical movement. Uncertainties may also affect source characterisation, assessment of chemical fate and transport in the environment, assessment of exposure risks and health effects, and remedial action performance. AECOMâ€™s professional opinions are based on its professional judgement, experience, and training. These opinions are also based upon data derived from the testing and analysis described in this document. AECOM may also have relied upon information provided by the Client and other third parties to prepare this document, some of which may not have been verified by AECOM. It is possible that additional testing and analysis might produce different results and/or different opinions. AECOM has limited its investigation to the scope agreed upon with its client. AECOM believes that its opinions are reasonably supported by the testing and analysis that have been conducted, and that those opinions have been developed according to the professional standard of care for the environmental consulting profession in this area at the date of this document. That standard of care may change and new methods and practices of exploration, testing, analysis and remediation may develop in the future, which might produce different results. AECOMâ€™s professional opinions contained in this document are subject to modification if additional information is obtained, through further investigation, observations, or validation testing and analysis during remedial activities.

25 July 2012 (Revision 4)

AECOM

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Appendix A

Tables and Figures

25 July 2012 (Revision 4)

AECOM

Appendix A

25 July 2012 (Revision 4)

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Tables and Figures

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Asbestos 1. CAHs

Asbestos cis-1,2-dichloroethene Trichloroethene Tetrachloroethene Vinyl chloride Benzene BTEX Ethylbenzene Toluene Xylene (m & p) Xylene (o) Total Xylene (ESDAT) Chloride Inorganics pH (Final) pH (Initial) Sulphate pH of Leaching Fluid Arsenic Metals Boron Cadmium Calcium Chromium Copper Lead Magnesium Mercury Nickel Potassium Sodium Zinc Organochlorine 2,4-DDT Pesticides 4,4-DDE a-BHC Aldrin Aldrin + Dieldrin b-BHC chlordane cis-Chlordane trans-chlordane d-BHC DDD DDT DDT+DDE+DDD Dieldrin Endosulfan I Endosulfan II Endosulfan sulphate Endrin Endrin aldehyde Endrin ketone g-BHC (Lindane) Heptachlor Heptachlor epoxide Hexachlorobenzene Methoxychlor o,p-DDD o,p''''-DDE Other Di(2-ethylhexyl)adipate Freon 113

Units

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg pH Units pH_Units mg/kg pH Units mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

Auckland AKL Council MfE MfE Sheep ALWP Sch 10 Disch Gasworks Dip 2006Background 1997-IND IND

600

500

(150) - 73001,2,3,c

0.4-12 2-260 0.1-0.65

100 7.5

70 10000 1300

10-170 20-90 1.5-65

400 325 250

10000 3300

0.03-0.45 4-320

105

54-1160

400

500

4200

1000 1700 190

14000

BH103_0.5 10/03/2012 986810_1 986810_2 Gravelly CLAY

<0.05 <0.05 <0.05 <0.1 <0.05 <0.15 3.212 <0.1 25.09 21.89 19.61 0.1036 19.42 69.49 -

ND <0.0551 <0.0551 <0.0551 <0.1102 <0.0551 <0.1653 <2 <0.1 25.69 25.27 20.88 <0.1 27.46 145 -

BH103_D RPD (%) 10/03/2012 986810_3 986810_2 Gravelly CLAY

BH103_1.2 10/03/2012 986810_2 986810_2 Clayey SAND

BH105_0.4-0.5 BH105_0.9-1.0 BH105_4.0-4.5 26/03/2012 26/03/2012 26/03/2012 992563_1 992563_2 992563_7 992563_2 992563_2 992563_2 Sandy SILT SILT SAND

BH105_D RPD (%) 26/03/2012 992563_8 992563_2 SAND

BH116_0.5-0.6 5/03/2012 985965_6 985965_3 Silty SAND

BH116_1.5-1.6 5/03/2012 985965_8 985965_3 Silty CLAY

BH116_7.3-7.6 5/03/2012 985965_12 985965_3 Siltstone

ND <0.3678 <0.3678 <1 <1 <0.3678 <0.3678 <0.7356 <0.3678 <0.3678 <0.7356 2.046 <0.1 90.5 23.34 17.05 0.1299 30.53 36.77 <1.35 <1.35 <1.35 <2.7 <1.35 <1.35 <1.35 <2.7 <5.4 <1.35 <2.7 <2.7 <2.7 <2.7 <2.7 <1.35 <1.35 <1.35 <1.35 <1.35 <3.678

<0.06257 <0.06257 <0.06257 <0.1251 <0.06257 <0.1877 <2 <0.1 34.54 18.28 14.09 <0.1 11.17 38.46 -

4.752 <0.1 12.68 26.55 8.617 <0.1 20.31 75.08 -

NES 2011 COMM / IND

3.0 - 541,2,3,c (180) - (9100)1,2,3,c (94) - (10000)1,2,3,c

BH102_1.1 11/03/2012 986810_5 986810_2 GRAVEL

160

Chemistry Output Table Revision 4 25 July 2012 I:\AEEP\60275817 AEEP ACT001 CRL Contaminated Land Assessment\8. Issued Docs\8.1 Reports\CLA Report 10Dec12\Appendix A Tables, Figures\updated tables\T1-60222458 Soils Results AECOM-20120814.xlsm

<0.06243 <0.06243 <0.06243 <0.1249 <0.06243 <0.1873 4.199 <0.1 33.75 25.41 17.82 <0.1 25.76 98.29 -

27.12 0.55 15.81 6.39 38.40 -

<0.05364 <0.05364 <0.05364 <0.1073 <0.05364 <0.1609 3.417 <20 <0.1 18.09 23.42 6.947 <0.1 12.22 57.64 <1.415 <1.415 <1.415 <2.83 <1.415 <1.415 <1.415 <2.83 <5.66 <1.415 <2.83 <2.83 <2.83 <2.83 <2.83 <1.415 <1.415 <1.415 <1.415 <1.415 -

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 3.604 <20 <0.1 12.89 21.94 7.255 <0.1 18.42 85.04 <0.1348 <0.1348 <0.1348 <0.2695 <0.1348 <0.1348 <0.1348 <0.2695 <0.5391 <0.1348 <0.2695 <0.5 <0.2695 <0.2695 <0.2695 <0.1348 <0.1348 <0.1348 <0.1348 <0.2 -

ND <0.05486 <0.05486 <0.05486 <0.1097 <0.05486 <0.1646 3.851 <0.1 11.71 28.2 9.58 <0.1 25.37 88.15 -

<0.0572 <0.0572 <0.0572 <0.1144 <0.0572 <0.1716 3.038 <0.1 11.5 16.76 4.83 <0.1 14.7 34.33 -

<0.05126 <0.05126 <0.05126 <0.1025 <0.05126 <0.1538 6.008 <0.1 12.47 16.55 5.292 <0.1 17.94 33.6 -

65.66 8.09 1.26 9.13 19.85 2.15 -

Page 1 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

PAH PAHs

Phenols

Solvents SVOCs

TPH

Units

Auckland AKL Council MfE MfE Sheep ALWP Sch 10 Disch Gasworks Dip 2006Background 1997-IND IND

BH102_1.1 11/03/2012 986810_5 986810_2 GRAVEL

BH103_0.5 10/03/2012 986810_1 986810_2 Gravelly CLAY

mg/kg

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

1.171 0.6644 0.1305 1.689 <0.02409 0.6604 <0.1204 0.4661 1.869 <8

0.5307 0.291 0.05668 0.8485 <0.02915 0.2941 <0.1457 0.123 0.9907 <8.744

TPH C10 - C14

mg/kg

<20

TPH+C10 - C36 (Sum of total) TPH C7-C36 TPH_C6-C9 ALIPHATIC TPH+C15 - C36 (Sum of total)

mg/kg mg/kg mg/kg mg/kg

<20 <68 <-0.15 <40

<20 <68.74 <-0.1653 <40

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

2.15

BH103_1.2 10/03/2012 986810_2 986810_2 Clayey SAND

BH105_0.4-0.5 BH105_0.9-1.0 BH105_4.0-4.5 26/03/2012 26/03/2012 26/03/2012 992563_1 992563_2 992563_7 992563_2 992563_2 992563_2 Sandy SILT SILT SAND

BH105_D RPD (%) 26/03/2012 992563_8 992563_2 SAND

BH116_0.5-0.6 5/03/2012 985965_6 985965_3 Silty SAND

BH116_1.5-1.6 5/03/2012 985965_8 985965_3 Silty CLAY

BH116_7.3-7.6 5/03/2012 985965_12 985965_3 Siltstone

NES 2011 COMM / IND

PAHs (Sum of total) Benzo[a]pyrene Toxic Equivalence (TEF) 2-chloronaphthalene 2-methylnaphthalene Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a) pyrene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzo[b]fluoranthene + Benzo[j]fluoranthene Benzo[b+j]fluoranthene Chrysene Dibenz(a,h)anthracene Fluoranthene Fluorene Indeno(1,2,3-c,d)pyrene Naphthalene Phenanthrene Pyrene 2,4-dimethylphenol 2-methylphenol 2-nitrophenol 3-&4-methylphenol 4,6-Dinitro-2-methylphenol 4-chloro-3-methylphenol 4-nitrophenol Phenol Phenols Acetone MTBE 1,3,5-Trichlorobenzene 2,4,5-trichlorophenol 2,4,6-trichlorophenol 2,4-dichlorophenol 2,4-Dinitrotoluene 2,6-dinitrotoluene 2-chlorophenol Methyl Ethyl Ketone 3,3-Dichlorobenzidine 4-bromophenyl phenyl ether 4-chlorophenyl phenyl ether Aniline Benzyl alcohol Bis(2-chloroethoxy) methane Bis(2-chloroethyl)ether Bis(2-chloroisopropyl) ether Bis(2-ethylhexyl) phthalate Butyl benzyl phthalate Carbazole Dibenzofuran Diethylphthalate Dimethyl phthalate Di-n-butyl phthalate Di-n-octyl phthalate Hexachlorocyclopentadiene Hexachloroethane Nitrobenzene N-nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol TPH C7 - C9

mg/kg

BH103_D RPD (%) 10/03/2012 986810_3 986810_2 Gravelly CLAY

200

360 120 - (2000) / NA1,2,3,a (1500)-(8900) / NA1,2,3,b NA

10.13

4.639

1.234

<1.674

<0.578

<0.5702

<0.5975

26.3

0.7519

<0.5842

1.436

0.6088

0.1393

<0.002

3.619

0.0809

<0.002

<0.02409 0.1427 0.1491 0.7633 0.9765 0.9009 0.4646

<0.02915 0.04159 0.0549 0.3121 0.4071 0.3871 0.2001

<0.7075 <0.7075 <0.03036 <0.03036 <0.03036 0.07491 0.09021 0.1075 0.04505

<0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1348 <0.1348 <0.1348

<0.0289 <0.0289 <0.0289 <0.0289 <0.0289 <0.0289 <0.0289

<0.02851 <0.02851 <0.02851 <0.02851 <0.02851 <0.02851 <0.02851

<0.02987 <0.02987 <0.02987 <0.02987 <0.02987 <0.02987 <0.02987

<0.675 <0.675 0.07083 0.1453 0.3592 1.958 2.47 2.653 1.061

<0.0342 <0.0342 <0.0342 0.03976 0.0609 0.05628 <0.0342

<0.02921 <0.02921 <0.02921 <0.02921 <0.02921 <0.02921 <0.02921

<1.415

<0.1348

2.619

<10.67

0.1277 0.07344 <0.03036 0.1941 <0.03036 0.07366 <0.1518 0.03264 0.2632 <1.415 <1.415 <5 <2.83 <5 <2.83 <2.83 <2.83 <1.415 <2.83 <2.83 <1.415 <7.075 <1.415 <1.415 <14.15 <1.415 <1.415 <1.415 <5.66 <2.83 <1.415 <1.415 <2.83 <2.83 <2.83 <2.83 <7.075 <2.83 <1.415 <2.83 <2.83 <30 <9.107

<0.1 <0.1348 <0.1 <0.1 <0.1348 <0.1 <0.1 <0.1 <0.2 <0.2 <0.4 <0.4 <0.5 <0.2695 <0.2695 <0.2695 <0.2 <0.2695 <0.2695 <0.2 <0.6739 <0.1348 <0.1348 <1.348 <0.1348 <0.1348 <0.1348 <0.5391 <0.2695 <0.1348 <0.1348 <0.2695 <0.2695 <0.2695 <0.2695 <0.6739 <0.2695 <0.1348 <0.2695 <0.2695 <6 <8

<0.0289 <0.0289 <0.0289 <0.0289 <0.0289 <0.0289 <0.1445 <0.0289 <0.0289 <8.669

<0.02851 <0.02851 <0.02851 <0.02851 <0.02851 <0.02851 <0.1426 <0.02851 <0.02851 <8.553

<0.02987 <0.02987 <0.02987 <0.02987 <0.02987 <0.02987 <0.1494 <0.02987 <0.02987 447.3

2.5 1.731 0.3949 4.117 0.05635 1.591 <0.1526 2.334 4.786 <1.35 <1.35 <5 <2.7 <5 <2.7 <36.78 <3.678 <0.3678 <2.7 <2.7 <1.35 <2.7 <2.7 <1.35 <6 <6.75 <1.35 <1.35 <13.5 <1.35 <1.35 <1.35 <5.4 <2.7 <1.35 <1.35 <2.7 <2.7 <2.7 <2.7 <6.75 <2.7 <1.35 <2.7 <2.7 <30 <9.155

0.07768 0.03441 <0.0342 0.1079 <0.0342 0.03896 <0.171 0.04127 0.1066 <10.26

<0.02921 <0.02921 <0.02921 <0.02921 <0.02921 <0.02921 <0.1461 <0.02921 <0.02921 <8.764

<21.34

<20

25.58

<20

<20.52

<20

<21.34 <74.69 <-0.1873 <42.68

<20 <69.11 <-0.1609 <40

<20 <68 <-0.15 <40

<20 <68.67 <-0.1646 <40

<20 <68.55 <-0.1716 <40

25.58 472.9 <-0.1538 <40

<20 <69.16 <-1.839 <40

<20.52 <71.83 <-0.1877 <41.05

<20 <68.76 <40

Page 2 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Units

VOCs

1,1,1,2-tetrachloroethane 1,1,1-trichloroethane 1,1,2,2-tetrachloroethane 1,1,2-trichloroethane 1,1-dichloroethane 1,1-dichloroethene 1,1-dichloropropene 1,2,3-trichlorobenzene 1,2,3-trichloropropane 1,2,4-trichlorobenzene 1,2,4-trimethylbenzene 1,2-dibromo-3-chloropropane 1,2-dibromoethane 1,2-dichlorobenzene 1,2-dichloroethane 1,2-Dichloroethene 1,2-dichloropropane 1,3,5-trimethylbenzene 1,3-dichlorobenzene 1,3-dichloropropane 1,3-Dichloropropene 1,4-dichlorobenzene 2-chlorotoluene 4-chlorotoluene 4-Methyl-2-pentanone Bromobenzene Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane Chloroform Chloromethane cis-1,3-dichloropropene Dibromomethane Dichlorodifluoromethane Dichloromethane Hexachlorobutadiene Isophorone Isopropylbenzene n-butylbenzene n-propylbenzene p-isopropyltoluene sec-butylbenzene Styrene tert-butylbenzene trans-1,2-dichloroethene trans-1,3-dichloropropene Trichlorofluoromethane

Auckland AKL Council MfE MfE Sheep ALWP Sch 10 Disch Gasworks Dip 2006Background 1997-IND IND

BH102_1.1 11/03/2012 986810_5 986810_2 GRAVEL

BH103_0.5 10/03/2012 986810_1 986810_2 Gravelly CLAY

BH103_D RPD (%) 10/03/2012 986810_3 986810_2 Gravelly CLAY

BH103_1.2 10/03/2012 986810_2 986810_2 Clayey SAND

BH105_0.4-0.5 BH105_0.9-1.0 BH105_4.0-4.5 26/03/2012 26/03/2012 26/03/2012 992563_1 992563_2 992563_7 992563_2 992563_2 992563_2 Sandy SILT SILT SAND

BH105_D RPD (%) 26/03/2012 992563_8 992563_2 SAND

BH116_0.5-0.6 5/03/2012 985965_6 985965_3 Silty SAND

BH116_1.5-1.6 5/03/2012 985965_8 985965_3 Silty CLAY

BH116_7.3-7.6 5/03/2012 985965_12 985965_3 Siltstone

<0.3678 <0.3678 <1 <1 <0.4 <0.4 <0.3678 <0.3678 <1 <0.3678 <0.3678 <1 <1 <0.3678 <1 <0.7678 <1 <0.3678 <0.3678 <1 <2 <0.3678 <0.3678 <0.3678 <10 <0.3678 <0.3678 <1 <3 <6 <0.3678 <0.3678 <0.3678 <1 <0.3678 <1 <1 <1 <1 <10 <0.3678 <1.35 <0.3678 <0.3678 <0.3678 <0.3678 <0.3678 <0.3678 <0.3678 <0.4 <1 <0.4

NES 2011 COMM / IND

<1.415 <2.83 <2.83 <2.83 <2.83 <1.415 -

<0.1348 <0.2695 <0.2695 <0.2695 <0.2695 <0.1348 -

Notes: -

not analysed Grey shaded RPD values - exceeds 30% for inorganic and 50% for organic analyses ND - "Not Detected" MATRIX DESCRIPTION ABBREVIATIONS: AVFT - Auckland Volcanic Field Tuff WG - Waitemata Group 1. Ministry for the Environment, 2011. Guidelines for Assessing and Managing Petroleum Hydrocarbon Contaminated Sites in New Zealand (Oil Industry Guidelines). 2. Values taken from Table 4.11 and Table 4.14 of the Oil Industry Guidelines. 3. Soil type chosen for comparison to the Oil Industry Guideline Tier 1 acceptance criteria for Sand, Sandy Silt and Silty Clay. Groundwater encountered ranged from approximately 2.4 - 5.4 m bgl. Brackets denote values that exceed threshold likely to correspond to formation of residual separate phase hydrocarbons. NA - indicates contaminant not limiting as estimated health-based criterion is significantly higher than that likely to be encountered on site. The following notes indicate the limiting exposure pathway for each criterion: a = maintenance/excavation worker exposure; b = exceeds PAH surrogate

Page 3 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Asbestos 1. CAHs

Units

Auckland AKL Council MfE MfE Sheep ALWP Sch 10 Disch Gasworks Dip 2006Background 1997-IND IND

600

500

(150) - 73001,2,3,c

0.4-12 2-260 0.1-0.65

100 7.5

70 10000 1300

10-170 20-90 1.5-65

400 325 250

10000 3300

0.03-0.45 4-320

105

54-1160

400

500

4200

1000 1700 190

14000

BH134_1.0-1.1 6/03/2012 985965_15 985965_3 CLAY

BH134_3.0-3.2 6/03/2012 985965_17 985965_3 Silty CLAY

BH154_0.2-0.3 7/03/2012 985965_20 985965_3 SILT

BH154_3.0-3.2 7/03/2012 985965_23 985965_3 SILT

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 <2 <0.1 59.49 66.92 5.709 <0.1 264.7 57.16 -

<2 <0.1 13.95 4.278 3.69 <0.1 10.05 5.094 -

3.552 <0.1 14.67 13.26 3.871 <0.1 <2 5.196 -

ND <0.06166 <0.06166 <0.06166 <0.1233 <0.06166 <0.185 <2 0.1228 62.58 44.3 37.38 <0.1 44.49 98.63 <0.01017 <0.01017 <0.01017 <0.01017 <0.02034 <0.01017 <0.04 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.0305 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 -

<2 0.1032 114.5 40.17 5.589 102.2 94.79 -

BH154_3.0-3.2A RPD (%) 7/03/2012 985965_24 985965_3 SILT

BH162_0.2-0.3 7/03/2012 985965_28 985965_3 CLAY

BH162_1.5-1.7 7/03/2012 985965_30 985965_3 SILT

BH162_2.3-2.5 7/03/2012 985965_31 985965_3 SILT

ND <0.06034 <0.06034 <0.06034 <0.1207 <0.06034 <0.181 <2 0.1286 66.4 42.53 113.5 0.1409 76.57 164.6 <1.496 <1.496 <1.496 <2.992 <1.496 <1.496 <1.496 <2.992 <5.984 <1.496 <2.992 <2.992 <2.992 <2.992 <2.992 <1.496 <1.496 <1.496 <1.496 <1.496 -

7.054 <0.1 17.41 18.75 7.082 18.07 20.56 -

<2 <0.1 6.311 11.86 6.445 9.803 16.51 -

BH162_2.3-2.5A RPD (%) 7/03/2012 985965_32 985965_3 SILT

BH167_0.1-0.2 6/03/2012 985965_1 985965_3 Sandy GRAVEL

NES 2011 COMM / IND

3.0 - 541,2,3,c (180) - (9100)1,2,3,c (94) - (10000)1,2,3,c

BH134_0.1-0.2 6/03/2012 985965_13 985965_3 Sandy GRAVEL

160

<2 <0.1 134.6 41.1 5.844 116.8 93.34 -

16.14 2.29 4.46 13.33 1.54 -

<2 <0.1 8.939 26.97 12.86 19.88 27.86 -

34.47 77.83 66.46 67.90 51.16 -

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 5.13 8.52 4.93 25.45 0.2035 58.94 73.52 311.5 0.2001 150.9 158.3 -

Page 4 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Units

Asbestos PAH PAHs

mg/kg

Phenols

Solvents SVOCs

TPH

Asbestos PAHs (Sum of total) Benzo[a]pyrene Toxic Equivalence (TEF) 2-chloronaphthalene 2-methylnaphthalene Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a) pyrene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzo[b]fluoranthene + Benzo[j]fluoranthene Benzo[b+j]fluoranthene Chrysene Dibenz(a,h)anthracene Fluoranthene Fluorene Indeno(1,2,3-c,d)pyrene Naphthalene Phenanthrene Pyrene 2,4-dimethylphenol 2-methylphenol 2-nitrophenol 3-&4-methylphenol 4,6-Dinitro-2-methylphenol 4-chloro-3-methylphenol 4-nitrophenol Phenol Phenols Acetone MTBE 1,3,5-Trichlorobenzene 2,4,5-trichlorophenol 2,4,6-trichlorophenol 2,4-dichlorophenol 2,4-Dinitrotoluene 2,6-dinitrotoluene 2-chlorophenol Methyl Ethyl Ketone 3,3-Dichlorobenzidine 4-bromophenyl phenyl ether 4-chlorophenyl phenyl ether Aniline Benzyl alcohol Bis(2-chloroethoxy) methane Bis(2-chloroethyl)ether Bis(2-chloroisopropyl) ether Bis(2-ethylhexyl) phthalate Butyl benzyl phthalate Carbazole Dibenzofuran Diethylphthalate Dimethyl phthalate Di-n-butyl phthalate Di-n-octyl phthalate Hexachlorocyclopentadiene Hexachloroethane Nitrobenzene N-nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol TPH C7 - C9

Auckland AKL Council MfE MfE Sheep Sch 10 Disch Gasworks Dip 2006ALWP 1997-IND IND Background

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

BH134_1.0-1.1 6/03/2012 985965_15 985965_3 CLAY

BH134_3.0-3.2 6/03/2012 985965_17 985965_3 Silty CLAY

BH154_0.2-0.3 7/03/2012 985965_20 985965_3 SILT

BH154_3.0-3.2 7/03/2012 985965_23 985965_3 SILT

BH154_3.0-3.2A RPD (%) 7/03/2012 985965_24 985965_3 SILT

BH162_0.2-0.3 7/03/2012 985965_28 985965_3 CLAY

BH162_1.5-1.7 7/03/2012 985965_30 985965_3 SILT

BH162_2.3-2.5 7/03/2012 985965_31 985965_3 SILT

BH162_2.3-2.5A RPD (%) 7/03/2012 985965_32 985965_3 SILT

BH167_0.1-0.2 6/03/2012 985965_1 985965_3 Sandy GRAVEL

NES 2011 COMM / IND

2.15

BH134_0.1-0.2 6/03/2012 985965_13 985965_3 Sandy GRAVEL

1.34

<0.681

<0.6267

12.12

<0.7874

<0.7942

<0.6991

<0.6488

<0.645

437.8

0.2183

0.0123

0.01424

1.895

0.05086

<0.002

0.6005

0.02865

<0.002

0.01658

50.46

<0.02438 <0.02438 <0.02438 0.09835 0.1481 0.1318 0.06614

<0.03405 <0.03405 <0.03405 <0.03405 <0.03405 <0.03405 <0.03405

<0.03134 <0.03134 <0.03134 <0.03134 <0.03134 <0.03134 <0.03134

<0.03338 0.07645 0.1574 0.9072 1.257 1.053 0.5821

<0.03937 <0.03937 <0.03937 <0.03937 <0.03937 <0.03937 <0.03937

<0.03971 <0.03971 <0.03971 <0.03971 <0.03971 <0.03971 <0.03971

<0.7481 <0.7481 <0.03291 <0.03291 <0.03291 0.8677 0.4199 0.3112 0.1825

<0.03496 <0.03496 <0.03496 <0.03496 <0.03496 <0.03496 <0.03496

<0.03244 <0.03244 <0.03244 <0.03244 <0.03244 <0.03244 <0.03244

<0.03225 <0.03225 <0.03225 <0.03225 <0.03225 <0.03225 <0.03225

0.8515 5.592 12.21 38.82 33.43 28.06 17.64

mg/kg

<1.496

0.1619 0.08163 0.0274 0.1699 <0.02438 0.07681 <0.1219 0.04666 0.2219 <8

<0.03405 <0.03405 <0.03405 <0.03405 <0.03405 <0.03405 <0.1702 <0.03405 <0.03405 <10.21

<0.03134 <0.03134 <0.03134 <0.03134 <0.03134 <0.03134 <0.1567 <0.03134 <0.03134 <9.401

1.413 0.7676 0.2539 1.841 <0.03338 0.6722 <0.1669 0.7622 2.256 <10.01

<0.03937 <0.03937 <0.03937 <0.03937 <0.03937 <0.03937 <0.1969 <0.03937 <0.03937 <11.81

<0.03971 <0.03971 <0.03971 <0.03971 <0.03971 <0.03971 <0.1985 <0.03971 <0.03971 <11.91

0.4657 0.2583 0.06045 1.414 <0.03291 0.2057 <0.1646 0.1259 1.541 <1.496 <1.496 <5 <2.992 <5 <2.992 <2.992 <2.992 <1.496 <2.992 <2.992 <1.496 <7.481 <1.496 <1.496 <14.96 <1.496 <1.496 <1.496 <5.984 <2.992 <1.496 <1.496 <2.992 <2.992 <2.992 <2.992 <7.481 <2.992 <1.496 <2.992 <2.992 <30 <9.874

<0.03496 <0.03496 <0.03496 <0.03496 <0.03496 <0.03496 <0.1748 <0.03496 <0.03496 <10.49

<0.03244 <0.03244 <0.03244 <0.03244 <0.03244 <0.03244 <0.1622 <0.03244 <0.03244 <9.732

<0.03225 <0.03225 <0.03225 <0.03225 <0.03225 <0.03225 <0.1613 <0.03225 <0.03225 <9.676

44.33 29.82 4.016 76.46 2.713 18.74 2.6 46.73 75.8 <8.337

<20

<20.43

<20

<20.03

<23.62

<23.83

<20

<20.97

<20

<20 <68 <-0.15 <40

<20.43 <71.5 <40.86

<20 <69.4 <40

<20.03 <70.09 <-0.185 <40.05

<23.62 <82.68 <47.25

<23.83 <83.39 <47.65

<20 <69.87 <-0.181 <40

<20.97 <73.41 <41.95

<20 <69.73 <40

<20 <69.68 <40

<20 1024 <-0.15 1024

TPH C10 - C14

mg/kg

TPH+C10 - C36 (Sum of total) TPH C7-C36 TPH_C6-C9 ALIPHATIC TPH+C15 - C36 (Sum of total)

mg/kg mg/kg mg/kg mg/kg

200

360 120 - (2000) / NA1,2,3,a (1500)-(8900) / NA1,2,3,b NA

Page 5 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Units

Asbestos VOCs

Asbestos 1,1,1,2-tetrachloroethane 1,1,1-trichloroethane 1,1,2,2-tetrachloroethane 1,1,2-trichloroethane 1,1-dichloroethane 1,1-dichloroethene 1,1-dichloropropene 1,2,3-trichlorobenzene 1,2,3-trichloropropane 1,2,4-trichlorobenzene 1,2,4-trimethylbenzene 1,2-dibromo-3-chloropropane 1,2-dibromoethane 1,2-dichlorobenzene 1,2-dichloroethane 1,2-Dichloroethene 1,2-dichloropropane 1,3,5-trimethylbenzene 1,3-dichlorobenzene 1,3-dichloropropane 1,3-Dichloropropene 1,4-dichlorobenzene 2-chlorotoluene 4-chlorotoluene 4-Methyl-2-pentanone Bromobenzene Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane Chloroform Chloromethane cis-1,3-dichloropropene Dibromomethane Dichlorodifluoromethane Dichloromethane Hexachlorobutadiene Isophorone Isopropylbenzene n-butylbenzene n-propylbenzene p-isopropyltoluene sec-butylbenzene Styrene tert-butylbenzene trans-1,2-dichloroethene trans-1,3-dichloropropene Trichlorofluoromethane

Auckland AKL Council MfE MfE Sheep Sch 10 Disch Gasworks Dip 2006ALWP 1997-IND IND Background

BH134_0.1-0.2 6/03/2012 985965_13 985965_3 Sandy GRAVEL

BH134_1.0-1.1 6/03/2012 985965_15 985965_3 CLAY

BH134_3.0-3.2 6/03/2012 985965_17 985965_3 Silty CLAY

BH154_0.2-0.3 7/03/2012 985965_20 985965_3 SILT

BH154_3.0-3.2 7/03/2012 985965_23 985965_3 SILT

BH154_3.0-3.2A RPD (%) 7/03/2012 985965_24 985965_3 SILT

BH162_0.2-0.3 7/03/2012 985965_28 985965_3 CLAY

BH162_1.5-1.7 7/03/2012 985965_30 985965_3 SILT

BH162_2.3-2.5 7/03/2012 985965_31 985965_3 SILT

<1.496 <2.992 <2.992 <2.992 <2.992 <1.496 -

BH162_2.3-2.5A RPD (%) 7/03/2012 985965_32 985965_3 SILT

BH167_0.1-0.2 6/03/2012 985965_1 985965_3 Sandy GRAVEL

NES 2011 COMM / IND

Notes: -

not analysed Grey shaded RPD values - exceeds 30% for inorganic and 50% for organic analyses ND - "Not Detected" MATRIX DESCRIPTION ABBREVIATIONS: AVFT - Auckland Volcanic Field Tuff WG - Waitemata Group 1. Ministry for the Environment, 2011. Guidelines for Assessing and Managing Petroleum Hydrocarbon Contaminated Sites in New Zealand 2. Values taken from Table 4.11 and Table 4.14 of the Oil Industry Guidelines. 3. Soil type chosen for comparison to the Oil Industry Guideline Tier 1 acceptance criteria for Sand, Sandy Silt and Silty Clay. Groundwater encountered ranged from approximately 2.4 - 5.4 m bgl. Brackets denote values that exceed threshold likely to correspond to formation of residual separate phase hydrocarbons. NA - indicates contaminant not limiting as estimated health-based criterion is significantly higher than that likely to be encountered on site. The following notes indicate the limiting exposure pathway for each criterion: a = maintenance/excavation worker exposure; b = exceeds PAH surrogate

Page 6 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Asbestos 1. CAHs

Units

Auckland AKL Council MfE MfE Sheep ALWP Sch 10 Disch Gasworks Dip 2006Background 1997-IND IND

600

500

(150) - 73001,2,3,c

0.4-12 2-260 0.1-0.65

100 7.5

70 10000 1300

10-170 20-90 1.5-65

400 325 250

10000 3300

0.03-0.45 4-320

105

54-1160

400

500

4200

1000 1700 190

14000

TP101_0.1 10/03/2012 986819_1 986819_3 Sandy SILT

<0.07962 <0.07962 <0.07962 <0.1592 <0.07962 <0.2389 4.98 7.66 4.93 19 0.1497 105.6 64.2 35.33 0.3227 140 115.2 -

ND <0.05631 <0.05631 <0.05631 <0.1126 <0.05631 <0.1689 4.92 7.15 4.93 6.239 0.4053 38.77 48.39 134.3 <0.1 77.42 381.6 <1.439 <1.439 <1.439 <2.878 <1.439 <1.439 <1.439 <2.878 <5.756 <1.439 <2.878 <2.878 <2.878 <2.878 <2.878 <1.439 <1.439 <1.439 <1.439 <1.439 -

TP101D RPD (%) 10/03/2012 986819_4 986819_3 Sandy SILT

TP101_0.5-0.6 10/03/2012 986819_2 986819_3 Gravelly Sandy SILT

TP102_0.1-0.2 10/03/2012 986894_1 986894_2 Gravelly

TP102_0.5-0.7 10/03/2012 986894_2 986894_2 Clayey SILT

<0.05 <0.05 <0.05 <0.1 <0.05 <0.15 8.203 <0.1 44.72 66.41 47.42 <0.1 129.2 79.54 <1.254 <1.254 <1.254 <2.508 <1.254 <1.254 <1.254 <2.508 <5.017 <1.254 <2.508 <2.508 <2.508 <2.508 <2.508 <1.254 <1.254 <1.254 <1.254 <1.254 -

ND <0.3181 <0.3181 <1 <1 <0.3181 <0.3181 <0.6361 <0.3181 <0.3181 <0.6361 11.08 0.2044 41.72 82.06 64.97 <0.1 101.6 81.21 <1.218 <1.218 <1.218 <2.437 <1.218 <1.218 <1.218 <2.437 <4.874 <1.218 <2.437 <2.437 <2.437 <2.437 <2.437 <1.218 <1.218 <1.218 <1.218 <1.218 <3.181

<0.5296 <0.5296 <1 <1 <0.5296 <0.5296 <1.059 <0.5296 <0.5296 <1.059 4.063 0.1354 54.43 49.43 22.42 <0.1 129.1 78.7 <1.666 <1.666 <1.666 <3.331 <1.666 <1.666 <1.666 <3.331 <6.662 <1.666 <3.331 <3.331 <3.331 <3.331 <3.331 <1.666 <1.666 <1.666 <1.666 <1.666 <5.296

TP103_0.1_0.2 TP103_0.9-1.2 11/04/2012 11/04/2012 997729_1 997729_3 997729_2 997729_2 GRAVEL SILT

TP104_ 0.2 10/03/2012 986792_1 986792_3 Gravels and Silt

TP104_ 0.6-0.7 10/03/2012 986792_2 986792_3 Silty GRAVEL

ND <0.05373 <0.05373 <0.05373 <0.1075 <0.05373 4.97 7.11 4.93 9.656 <20 3.415 71.59 568.9 155.4 0.4882 141.8 508.5 -

ND <0.05 <0.05 <0.05 <0.1 <0.05 4.98 7.26 4.92 5.478 26.75 0.5243 81.46 156.2 208.3 1.056 147.2 359.7 -

TP104_ 1-1.1 TP105_.2 10/03/2012 11/03/2012 986792_3 986803_1 986792_3 986803_2 Silty Cobbles GRAVEL and Gravel

NES 2011 COMM / IND

3.0 - 541,2,3,c (180) - (9100)1,2,3,c (94) - (10000)1,2,3,c

BH167_1.0-1.2 6/03/2012 985965_3 985965_3 SILT

160

6.836 0.4025 40.89 52.9 143.2 <0.1 85.77 508.4 -

9.13 0.69 5.32 8.91 6.41 10.23 28.49 -

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 2.738 <0.1 27.73 35.88 13.19 <0.1 58.08 82.08 -

<0.07102 <0.07102 <0.07102 <0.142 <0.07102 <0.2131 <2 0.1354 102.1 40.14 6.179 0.1536 181.8 75.81 -

<2 <0.1 11.56 49.51 8.702 <0.1 42.96 48.27 -

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 6.902 <20 0.2707 30.8 66.39 105 <0.1 110.2 87.24 -

Page 7 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Units

Asbestos PAH PAHs

mg/kg

Phenols

Solvents SVOCs

TPH

Auckland AKL Council MfE MfE Sheep Sch 10 Disch Gasworks Dip 2006ALWP 1997-IND IND Background

BH167_1.0-1.2 6/03/2012 985965_3 985965_3 SILT

TP101_0.1 10/03/2012 986819_1 986819_3 Sandy SILT

TP101D RPD (%) 10/03/2012 986819_4 986819_3 Sandy SILT

TP101_0.5-0.6 10/03/2012 986819_2 986819_3 Gravelly Sandy SILT

TP102_0.1-0.2 10/03/2012 986894_1 986894_2 Gravelly

TP102_0.5-0.7 10/03/2012 986894_2 986894_2 Clayey SILT

TP103_0.1_0.2 TP103_0.9-1.2 11/04/2012 11/04/2012 997729_1 997729_3 997729_2 997729_2 GRAVEL SILT

TP104_ 0.2 10/03/2012 986792_1 986792_3 Gravels and Silt

TP104_ 0.6-0.7 10/03/2012 986792_2 986792_3 Silty GRAVEL

TP104_ 1-1.1 TP105_.2 10/03/2012 11/03/2012 986792_3 986803_1 986792_3 986803_2 Silty Cobbles GRAVEL and Gravel

NES 2011 COMM / IND

8.127

12.14

5.738

2.721

0.9184

1.745

<0.6977

5.753

1.224

1.641

0.7668

0.4054

0.1031

0.2411

<0.002

9.622

47.54

0.2818

0.7596

<0.03985 0.1124 0.08984 0.5134 0.8404 1.055 0.394

<0.7195 <0.7195 <0.0326 0.09369 0.2647 0.9204 1.115 0.9081 0.5254

<0.6271 <0.6271 <0.02577 0.07825 0.07778 0.3614 0.5077 0.5222 0.2587

<0.6092 <0.6092 <0.0237 0.02574 0.02752 0.1908 0.2872 0.2602 0.1388

<0.8328 <0.8328 <0.03745 <0.03745 <0.03745 0.04944 0.0783 0.098 <0.03745

<0.02241 <0.02241 <0.02241 0.1197 0.1378 0.1828 0.1308

<0.03489 <0.03489 <0.03489 <0.03489 <0.03489 <0.03489 <0.03489

0.174 0.9391 1.324 5.861 6.493 6.086 3.204

0.7176 3.196 9.425 29.15 33.82 26.74 13.33

<0.0267 0.04437 0.04239 0.1551 0.1866 0.189 0.09222

<0.02623 0.08905 0.102 0.3665 0.5049 0.462 0.2678

mg/kg

<1.439

<1.254

<1.218

<1.666

0.9554 0.4746 0.1164 1.101 <0.03985 0.65 <0.1992 0.2984 1.386 <11.95

1.393 0.8125 0.1411 2.09 <0.0326 0.7205 <0.163 0.8586 2.183 <1.439 <1.439 <5 <2.878 <5 <2.878 <0.2 <2.878 <2.878 <1.439 <2.878 <2.878 <1.439 <7.195 <1.439 <1.439 <14.39 <1.439 <1.439 <1.439 <5.756 <2.878 <1.439 <1.439 <2.878 <2.878 <2.878 <2.878 <7.195 <2.878 <1.439 <2.878 <2.878 <30 <9.78

0.7049 0.3674 0.07446 0.9462 <0.02577 0.3899 <0.1289 0.3287 1.03 <1.254 <1.254 <5 <2.508 <5 <2.508 <0.2 <2.508 <2.508 <1.254 <2.508 <2.508 <1.254 <6.271 <1.254 <1.254 <12.54 <1.254 <1.254 <1.254 <5.017 <2.508 <1.254 <1.254 <2.508 <2.508 <2.508 <2.508 <6.271 <2.508 <1.254 <2.508 <2.508 <30 <8

0.3426 0.182 0.03058 0.3959 <0.0237 0.1465 <0.1185 0.1427 0.4676 <1.218 <1.218 <5 <2.437 <5 <2.437 <31.81 <3.181 <0.3181 <2.437 <2.437 <1.218 <2.437 <2.437 <1.218 <6 <6.092 <1.218 <1.218 <12.18 <1.218 <1.218 <1.218 <5 <2.437 <1.218 <1.218 <2.437 <2.437 <2.437 <2.437 <6.092 <2.437 <1.218 <2.437 <2.437 <30 <8

0.09566 0.05655 <0.03745 0.1032 <0.03745 0.05137 <0.1873 0.03773 0.1422 <1.666 <1.666 <5 <3.331 <5 <3.331 <52.96 <5.296 <0.5296 <3.331 <3.331 <1.666 <3.331 <3.331 <1.666 <6 <8.328 <1.666 <1.666 <16.66 <1.666 <1.666 <1.666 <6.662 <3.331 <1.666 <1.666 <3.331 <3.331 <3.331 <3.331 <8.328 <3.331 <1.666 <3.331 <3.331 <33.31 <11.24

0.2889 0.1456 0.03458 0.1977 <0.02241 0.1133 <0.1121 0.07342 0.2193 <8

<0.03489 <0.03489 <0.03489 <0.03489 <0.03489 <0.03489 <0.1744 <0.03489 <0.03489 <10.47

7.091 4.903 0.8607 15.12 0.2807 4.52 0.3801 7.509 15.58 <0.2 <8.96

30.63 23.43 3.58 83.14 1.952 17.61 0.7162 63.65 77.69 <0.2 <8

0.2727 0.1362 <0.0267 0.4143 <0.0267 0.1306 <0.1335 0.203 0.4316 <8.009

0.7798 0.3471 0.06702 0.8845 <0.02623 0.3394 0.1465 0.4737 0.8964 <8

<23.91

<20

<22.47

<20

<20.93

<20

<23.91 <83.68 <-0.2389 <47.82

<20 <69.78 <-0.1689 <40

<20 <68 <-0.15 <40

<20 <68 <-1.59 <40

<22.47 <78.65 <-2.648 <44.94

<20 2233 <-0.15 2233

<20.93 <73.26 <-0.2131 <41.86

209.3 209.3

1126 1126

<68.01 <40

<20 132.3 <-0.15 132.3

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

TPH C10 - C14

mg/kg

TPH+C10 - C36 (Sum of total) TPH C7-C36 TPH_C6-C9 ALIPHATIC TPH+C15 - C36 (Sum of total)

mg/kg mg/kg mg/kg mg/kg

2.15

200

360 120 - (2000) / NA1,2,3,a (1500)-(8900) / NA1,2,3,b NA

Page 8 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Units

Asbestos VOCs

Auckland AKL Council MfE MfE Sheep Sch 10 Disch Gasworks Dip 2006ALWP 1997-IND IND Background

BH167_1.0-1.2 6/03/2012 985965_3 985965_3 SILT

TP101_0.1 10/03/2012 986819_1 986819_3 Sandy SILT

<1.439 <2.878 <2.878 <2.878 <2.878 <1.439 -

TP101D RPD (%) 10/03/2012 986819_4 986819_3 Sandy SILT

TP101_0.5-0.6 10/03/2012 986819_2 986819_3 Gravelly Sandy SILT

TP102_0.1-0.2 10/03/2012 986894_1 986894_2 Gravelly

TP102_0.5-0.7 10/03/2012 986894_2 986894_2 Clayey SILT

<1.254 <2.508 <2.508 <2.508 <2.508 <1.254 -

<0.3181 <0.3181 <1 <1 <0.4 <0.4 <0.3181 <0.3181 <1 <0.3181 <0.3181 <1 <1 <0.3181 <1 <0.7181 <1 <0.3181 <0.3181 <1 <2 <0.3181 <0.3181 <0.3181 <10 <0.3181 <0.3181 <1 <3 <6 <0.3181 <0.3181 <0.3181 <1 <0.3181 <1 <1 <1 <1 <10 <0.3181 <1.218 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.4 <1 <0.4

<0.5296 <0.5296 <1 <1 <0.5296 <0.5296 <0.5296 <0.5296 <1 <0.5296 <0.5296 <1 <1 <0.5296 <1 <1.059 <1 <0.5296 <0.5296 <1 <2 <0.5296 <0.5296 <0.5296 <10 <0.5296 <0.5296 <1 <3 <6 <0.5296 <0.5296 <0.5296 <1 <0.5296 <1 <1 <1 <1 <10.59 <0.5296 <1.666 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <1 <0.5296

TP103_0.1_0.2 TP103_0.9-1.2 11/04/2012 11/04/2012 997729_1 997729_3 997729_2 997729_2 GRAVEL SILT

TP104_ 0.2 10/03/2012 986792_1 986792_3 Gravels and Silt

TP104_ 0.6-0.7 10/03/2012 986792_2 986792_3 Silty GRAVEL

TP104_ 1-1.1 TP105_.2 10/03/2012 11/03/2012 986792_3 986803_1 986792_3 986803_2 Silty Cobbles GRAVEL and Gravel

NES 2011 COMM / IND

Notes: -

not analysed Grey shaded RPD values - exceeds 30% for inorganic and 50% for organic analyses ND - "Not Detected" MATRIX DESCRIPTION ABBREVIATIONS: AVFT - Auckland Volcanic Field Tuff WG - Waitemata Group 1. Ministry for the Environment, 2011. Guidelines for Assessing and Managing Petroleum Hydrocarbon Contaminated Sites in New Zealand 2. Values taken from Table 4.11 and Table 4.14 of the Oil Industry Guidelines. 3. Soil type chosen for comparison to the Oil Industry Guideline Tier 1 acceptance criteria for Sand, Sandy Silt and Silty Clay. Groundwater encountered ranged from approximately 2.4 - 5.4 m bgl. Brackets denote values that exceed threshold likely to correspond to formation of residual separate phase hydrocarbons. NA - indicates contaminant not limiting as estimated health-based criterion is significantly higher than that likely to be encountered on site. The following notes indicate the limiting exposure pathway for each criterion: a = maintenance/excavation worker exposure; b = exceeds PAH surrogate

Page 9 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Asbestos 1. CAHs

Units

Auckland AKL Council MfE MfE Sheep ALWP Sch 10 Disch Gasworks Dip 2006Background 1997-IND IND

600

500

(150) - 73001,2,3,c

0.4-12 2-260 0.1-0.65

100 7.5

70 10000 1300

10-170 20-90 1.5-65

400 325 250

10000 3300

0.03-0.45 4-320

105

54-1160

400

500

4200

1000 1700 190

14000

TP105D RPD (%) 11/03/2012 986803_5 986803_2 Gravelly SAND

TP105_1-1.1 TP106_0.1-0.2 11/03/2012 8/03/2012 986803_3 985965_35 986803_2 985965_3 Gravelly Gravelly SAND SAND

TP106_1.3-1.4 TP107_0.3 8/03/2012 10/03/2012 985965_36 986872_1 985965_3 986872_3 CLAY Sandy GRAVEL

TP107_0.9-1.0 10/03/2012 986872_3 986872_3 Sandy GRAVEL

TP107_2.5 10/03/2012 986872_6 986872_3 Gravelly SAND

TP108_0.2 11/03/2012 986880_1 986880_3 Sandy SILT

TP108_1.1-1.2 11/03/2012 986880_3 986880_3 Sandy SILT

4.93 7.45 4.93 308.8 144.4 0.1496 82.18 162.7 53.28 <0.1 45.25 100.7 -

4.706 <20 0.1246 83.13 50.49 32.14 <0.1 53.48 100.1 -

ND <0.05 <0.05 <0.05 <0.1 <0.05 4.97 7.76 4.93 33.44 <20 0.417 53.06 158.4 192.4 4.772 99.3 878.1 <1.333 <1.333 <1.333 <1.333 <1.333 <1.333 <2.667 <1.333 <2.667 <2.667 <2.667 <2.667 <2.667 <1.333 <1.333 <1.333 <1.333 <1.333 -

<0.05 <0.05 <0.05 <0.1 <0.05 4.37 <20 <0.1 68.78 20.12 12.57 0.1366 18.16 53.05 <1.45 <1.45 <1.45 <1.45 <1.45 <1.45 <2.899 <1.45 <2.899 <2.899 <2.899 <2.899 <2.899 <1.45 <1.45 <1.45 <1.45 <1.45 -

TP108_2.0-2.1 TP109_0.2 11/03/2012 11/03/2012 986880_5 986814_1 986880_3 986814_3 Clayey SILT gravel, sand, silt

TP109_1-1.1 11/03/2012 986814_3 986814_3 Gravelly Sandy SILT

NES 2011 COMM / IND

3.0 - 541,2,3,c (180) - (9100)1,2,3,c (94) - (10000)1,2,3,c

TP105_.5 11/03/2012 986803_2 986803_2 Gravelly SAND

160

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 <2 <20 <0.1 38.53 32.43 6.191 <0.1 93.2 50.44 <1.313 <1.313 <1.313 <2.627 <1.313 <1.313 <1.313 <2.627 <5.253 <1.313 <2.627 <2.627 <2.627 <2.627 <2.627 <1.313 <1.313 <1.313 <1.313 <1.313 -

<2 <0.1 29.55 29.07 4.605 0.108 102.2 46.23 -

26.38 10.93 29.38 9.21 10.9268 -

2.552 0.1147 20.76 37.46 25.08 <0.1 91.53 57.25 -

ND 3.42 0.2346 45.26 52.55 78.64 <0.1 155.1 114.4 -

<2 <0.1 28.68 7.598 6.624 <0.1 10.69 45.92 -

<0.05 <0.05 <0.05 <0.1 <0.05 4.99 7.2 4.92 30.14 <20 0.2861 52.94 97.29 94.93 0.104 92.52 174.1 -

<2 <0.1 94.02 37.28 9.002 0.1362 35.97 36.82 -

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 5.19 8.87 4.93 8.015 0.2189 40.89 54.02 288.9 0.1968 88.06 212.7 -

5.26 8.84 4.93 4.004 0.2929 51.49 65.62 131.8 0.2462 132.1 187.6 -

Page 10 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Units

Asbestos PAH PAHs

mg/kg

Phenols

Solvents SVOCs

TPH

Auckland AKL Council MfE MfE Sheep Sch 10 Disch Gasworks Dip 2006ALWP 1997-IND IND Background

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

TP105D RPD (%) 11/03/2012 986803_5 986803_2 Gravelly SAND

TP105_1-1.1 TP106_0.1-0.2 11/03/2012 8/03/2012 986803_3 985965_35 986803_2 985965_3 Gravelly Gravelly SAND SAND

TP106_1.3-1.4 TP107_0.3 8/03/2012 10/03/2012 985965_36 986872_1 985965_3 986872_3 CLAY Sandy GRAVEL

TP107_0.9-1.0 10/03/2012 986872_3 986872_3 Sandy GRAVEL

TP107_2.5 10/03/2012 986872_6 986872_3 Gravelly SAND

TP108_0.2 11/03/2012 986880_1 986880_3 Sandy SILT

TP108_1.1-1.2 11/03/2012 986880_3 986880_3 Sandy SILT

TP108_2.0-2.1 TP109_0.2 11/03/2012 11/03/2012 986880_5 986814_1 986880_3 986814_3 Clayey SILT gravel, sand, silt

TP109_1-1.1 11/03/2012 986814_3 986814_3 Gravelly Sandy SILT

NES 2011 COMM / IND

2.15

TP105_.5 11/03/2012 986803_2 986803_2 Gravelly SAND

<13.13

1.124

2.061

<0.6615

9.086

36.09

<0.002

0.1215

0.3144

<0.002

0.2311

0.1179

0.1322

7.098

<0.002

1.426

5.412

<0.6567 <0.6567 <0.6567 <0.6567 <0.6567 <0.6567 <1.313 <1.313 <1.313

<0.02502 0.02579 <0.02502 0.06545 0.08799 0.09713 0.04513

<0.02819 <0.02819 <0.02819 0.1377 0.2026 0.1832 0.1012

<0.03307 <0.03307 <0.03307 <0.03307 <0.03307 <0.03307 <0.03307

<0.02666 <0.02666 <0.02666 0.07596 0.1262 0.1399 0.08539

<0.03189 <0.03189 <0.03189 0.03539 0.05903 0.06379 0.03977

<0.04011 <0.04011 <0.04011 <0.04011 0.06576 0.07407 0.05162

<0.6667 <0.6667 0.1088 0.3042 0.5062 3.686 4.653 4.02 2.302

<0.7248 <0.7248 <0.03021 <0.03021 <0.03021 <0.03021 <0.03021 <0.03021 <0.03021

<0.03519 <0.03519 <0.03519 <0.03519 <0.03519 <0.03519 <0.03519

<0.02856 0.08522 0.07236 0.644 0.9366 0.8031 0.4686

0.03737 0.3366 0.3326 2.709 3.513 2.955 1.778

mg/kg

<1.313

3.794

<1.45

<0.6567 <1.313 <0.6567 <0.6567 <1.313 <0.6567 <0.6567 <0.6567 <1.313 <1.313 <5 <2.627 <5 <2.627 <0.2 <2.627 <2.627 <1.313 <2.627 <2.627 <1.313 <6.567 <1.313 <1.313 <13.13 <1.313 <1.313 <1.313 <5.253 <2.627 <1.313 <1.313 <2.627 <2.627 <2.627 <2.627 <6.567 <2.627 <1.313 <2.627 <2.627 <30 <8.164

0.1335 0.06133 <0.02502 0.1667 <0.02502 0.06795 <0.1251 0.08262 0.1782 <8

0.2474 0.1401 0.04765 0.2808 <0.02819 0.1128 <0.1409 0.1325 0.348 <8.457

<0.03307 <0.03307 <0.03307 <0.03307 <0.03307 <0.03307 <0.1654 <0.03307 <0.03307 <9.922

0.2223 0.1059 0.05218 0.1745 <0.02666 0.1158 <0.1333 0.09058 0.1975 <8

0.07662 0.05744 0.03807 0.03763 <0.03189 0.04641 <0.1594 0.09449 0.05006 <9.567

0.07553 <0.04011 0.04392 <0.04011 <0.04011 0.05931 <0.2006 <0.04011 0.04455 <12.03

5.506 3.508 0.79 8.387 0.1459 3.866 0.1768 4.233 8.999 <1.333 <1.333 <5 <2.667 <5 <2.667 <2.667 <2.667 <1.333 <2.667 <2.667 <1.333 <6.667 <1.333 <1.333 <13.33 <1.333 <1.333 <1.333 <5.334 <2.667 <1.333 <1.333 <2.667 <2.667 <2.667 <2.667 <6.667 <2.667 <1.333 <2.667 <2.667 <30 <8.788

<0.03021 <0.03021 <0.03021 <0.03021 <0.03021 <0.03021 <0.151 <0.03021 <0.03021 <1.45 <1.45 <5 <2.899 <5 <2.899 <2.899 <2.899 <1.45 <2.899 <2.899 <1.45 <7.248 <1.45 <1.45 <14.5 <1.45 <1.45 <1.45 <5.799 <2.899 <1.45 <1.45 <2.899 <2.899 <2.899 <2.899 <7.248 <2.899 <1.45 <2.899 <2.899 <30 <9.063

<0.03519 <0.03519 <0.03519 <0.03519 <0.03519 <0.03519 <0.176 <0.03519 <0.03519 <10.56

1.118 0.6755 0.1778 1.365 <0.02856 0.6805 <0.1428 0.4102 1.549 <8.568

4.212 2.517 0.6408 5.8 0.06077 3.048 <0.1452 1.76 6.319 <8.713

<20

<24.07

<20

<21.11

<20

<20 <68.16 <-0.15 <40

<20 <68 <40

<20 <68.46 <40

<20 <69.92 <40

<68 <40

<69.57 <40

<84.24 <48.14

99.5 99.5

<69.06 <40

<73.9 <42.23

<20 <68.57 <-0.15 <40

<20 <68.71 51.04

TPH C10 - C14

mg/kg

TPH+C10 - C36 (Sum of total) TPH C7-C36 TPH_C6-C9 ALIPHATIC TPH+C15 - C36 (Sum of total)

mg/kg mg/kg mg/kg mg/kg

200

360 120 - (2000) / NA1,2,3,a (1500)-(8900) / NA1,2,3,b NA

Page 11 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Units

Asbestos VOCs

Auckland AKL Council MfE MfE Sheep Sch 10 Disch Gasworks Dip 2006ALWP 1997-IND IND Background

TP105_.5 11/03/2012 986803_2 986803_2 Gravelly SAND

TP105D RPD (%) 11/03/2012 986803_5 986803_2 Gravelly SAND

TP105_1-1.1 TP106_0.1-0.2 11/03/2012 8/03/2012 986803_3 985965_35 986803_2 985965_3 Gravelly Gravelly SAND SAND

TP106_1.3-1.4 TP107_0.3 8/03/2012 10/03/2012 985965_36 986872_1 985965_3 986872_3 CLAY Sandy GRAVEL

TP107_0.9-1.0 10/03/2012 986872_3 986872_3 Sandy GRAVEL

TP107_2.5 10/03/2012 986872_6 986872_3 Gravelly SAND

TP108_0.2 11/03/2012 986880_1 986880_3 Sandy SILT

TP108_1.1-1.2 11/03/2012 986880_3 986880_3 Sandy SILT

<1.333 <2.667 <2.667 <2.667 <2.667 <1.333 -

<1.45 <2.899 <2.899 <2.899 <2.899 <1.45 -

TP108_2.0-2.1 TP109_0.2 11/03/2012 11/03/2012 986880_5 986814_1 986880_3 986814_3 Clayey SILT gravel, sand, silt

TP109_1-1.1 11/03/2012 986814_3 986814_3 Gravelly Sandy SILT

NES 2011 COMM / IND

<1.313 <2.627 <2.627 <2.627 <2.627 <1.313 -

Notes: -

not analysed Grey shaded RPD values - exceeds 30% for inorganic and 50% for organic analyses ND - "Not Detected" MATRIX DESCRIPTION ABBREVIATIONS: AVFT - Auckland Volcanic Field Tuff WG - Waitemata Group 1. Ministry for the Environment, 2011. Guidelines for Assessing and Managing Petroleum Hydrocarbon Contaminated Sites in New Zealand 2. Values taken from Table 4.11 and Table 4.14 of the Oil Industry Guidelines. 3. Soil type chosen for comparison to the Oil Industry Guideline Tier 1 acceptance criteria for Sand, Sandy Silt and Silty Clay. Groundwater encountered ranged from approximately 2.4 - 5.4 m bgl. Brackets denote values that exceed threshold likely to correspond to formation of residual separate phase hydrocarbons. NA - indicates contaminant not limiting as estimated health-based criterion is significantly higher than that likely to be encountered on site. The following notes indicate the limiting exposure pathway for each criterion: a = maintenance/excavation worker exposure; b = exceeds PAH surrogate

Page 12 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Asbestos 1. CAHs

Units

Auckland AKL Council MfE MfE Sheep ALWP Sch 10 Disch Gasworks Dip 2006Background 1997-IND IND

NES 2011 COMM / IND

600

500

(150) - 73001,2,3,c

0.4-12 2-260 0.1-0.65

100 7.5

70 10000 1300

10-170 20-90 1.5-65

400 325 250

10000 3300

0.03-0.45 4-320

105

54-1160

400

500

4200

1000 1700 190

14000

Maximum Maximum Average Median Standard Number of Concentration Detect Concentration Concentration Deviation Guideline Exceedances

3.0 - 541,2,3,c (180) - (9100)1,2,3,c (94) - (10000)1,2,3,c

Statistical Summary Number of Number of Minimum Minimum Results Detects Concentration Detect

160

4 4 4 4 31 31 31 31 31 26 1 11 11 1 11 53 17 53 6 53 53 53 6 48 53 6 6 53 1 12 12 12 10 12 1 1 1 12 12 12 10 12 12 12 12 12 1 12 12 12 12 12 1 1 1 11 3

1 1 1 1 2 2 2 2 2 2 1 11 11 1 11 37 8 27 6 53 53 53 6 21 52 6 6 53 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

<0.3181 <0.3181 <1 <1 <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 0 4.92 7.11 0 4.92 <2 <20 <0.1 0 5.32262114 0.552486188 3.69 0 <0.1 <2 0 0 1.541487269 <0.01017 <0.01017 <0.01017 <0.01017 <0.02034 <0.01017 <0.04 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.0305 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.2 <3.181

ND ND ND ND ND ND ND ND ND ND ND 4.92 7.11 ND 4.92 2.046 26.75 0.1032 ND 5.322621 0.552486 3.69 ND 0.1036 6.388576 ND ND 1.541487 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

<0.5296 <0.5296 <1 <1 <0.5296 <0.5296 <1.059 <0.5296 <0.5296 <1.059 0 5.26 8.87 0 4.93 308.8 144.4 3.415 0 134.6 568.9 311.5 0 4.772 264.7 0 0 878.1 <0.01017 <1.666 <1.666 <1.666 <3.331 <1.666 <0.04 <0.01017 <0.01017 <1.666 <1.666 <3.331 <6.662 <1.666 <3.331 <3.331 <3.331 <3.331 <0.01017 <3.331 <1.666 <1.666 <1.666 <1.666 <0.01017 <0.01017 <0.01017 <1.666 <5.296

ND ND ND ND ND ND ND ND ND ND ND 5.26 8.87 ND 4.93 308.8 144.4 3.415 ND 134.6 568.9 311.5 ND 4.772 264.7 ND ND 878.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

0.2 0.2 0.5 0.5 0.046 0.046 0.067 0.07 0.046 0.12

0.1839 0.1839 0.5 0.5 0.02682 0.02682 0.02682 0.05365 0.02682 0.082475

0.055 0.055 0 0 0.056 0.056 0.12 0.049 0.056 0.11

5 7.8

4.98 7.555

0.12 0.7

4.9 13 24 0.21

4.93 3.604 10 0.05

0.0042 45 40 0.49

43 53 50

34.54 37.28 15.81395349

31 81 72

0.23 67

0.05 45.25

0.74 58

115

75.81 0.005085 0.67075 0.67075 0.67075 1.33175 0.67075 0.02 0.005085 0.005085 0.67075 0.67075 1.34175 2.66325 0.67075 1.34175 1.34175 1.34175 1.34175 0.005085 1.34175 0.67075 0.67075 0.67075 0.67075 0.005085 0.005085 0.005085 0.675 1.839

154

0.59 0.59 0.59 1.1 0.59

0.59 0.59 1.2 2.3 0.59 1.2 1.2 1.2 1.2 1.2 0.59 0.59 0.59 0.59

0.64 2

0.26 0.26 0.26 0.57 0.26

0.26 0.26 0.53 1.1 0.26 0.53 0.51 0.53 0.53 0.53 0.26 0.26 0.26 0.26

0.19 0.55

#VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE!

Number of Guideline Exceedances (Detects Only)

Page 13 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Asbestos PAH PAHs

Phenols

Solvents SVOCs

TPH

Units

Auckland AKL Council MfE MfE Sheep Sch 10 Disch Gasworks Dip 2006ALWP 1997-IND IND Background

NES 2011 COMM / IND

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

2.15

Maximum Maximum Average Median Standard Number of Concentration Detect Concentration Concentration Deviation Guideline Exceedances

mg/kg mg/kg

Statistical Summary Number of Number of Minimum Minimum Results Detects Concentration Detect

Number of Guideline Exceedances (Detects Only)

<0.5702

0.7519

437.8

1.234

#VALUE!

<0.002

0.0123

50.46

3.1

0.13575

#VALUE!

14 14 47 47 47 47 47 47 47

3 3 9 20 19 29 30 30 28

<0.1 <0.1 <0.02241 <0.02241 <0.02241 <0.02851 <0.02851 <0.02851 <0.02851

ND ND 0.03737 0.02574 0.02752 0.03539 0.05903 0.05628 0.03977

<0.8328 <0.8328 0.8515 5.592 12.21 38.82 33.82 28.06 17.64

ND ND 0.8515 5.592 12.21 38.82 33.82 28.06 17.64

0.32 0.32 0.066 0.28 0.59 2 2.1 1.8 1

0.3375 0.3375 0.01626 0.019205 0.01816 0.075435 0.108205 0.11965 0.06677

0.095 0.095 0.17 0.96 2.3 7.2 7.1 5.8 3.3

#VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE! #VALUE!

mg/kg

<0.1348

2.619

3.794

1.1

0.7195

1.1

#VALUE!

45 47 47 47 47 47 47 47 47 11 11 11 11 0 11 0 11 5 3 3 3 11 11 11 11 11 11 3 11 11 11 0 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 49

30 29 25 29 9 30 8 29 30 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5

<0.02851 <0.02851 <0.02502 <0.02851 <0.02241 <0.02851 <0.1 <0.02851 <0.02851 <0.2 <0.2 <0.4 <0.4 0 <0.5 0 <0.2695 <0.2 <31.81 <3.181 <0.3181 <0.2695 <0.2695 <0.2 <0.2695 <0.2695 <0.2 <6 <0.6739 <0.1348 <0.1348 0 <1.348 <0.1348 <0.1348 <0.1348 <0.5391 <0.2695 <0.1348 <0.1348 <0.2695 <0.2695 <0.2695 <0.2695 <0.6739 <0.2695 <0.1348 <0.2695 <0.2695 <6 <8

0.07553 0.03441 0.0274 0.03763 0.05635 0.03896 0.1465 0.03264 0.04455 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 447.3

44.33 29.82 4.016 83.14 2.713 18.74 2.6 63.65 77.69 <1.666 <1.666 <5 <3.331 0 <5 0 <3.331 <0.2 <52.96 <5.296 <0.5296 <3.331 <3.331 <1.666 <3.331 <3.331 <1.666 <6 <8.328 <1.666 <1.666 0 <16.66 <1.666 <1.666 <1.666 <6.662 <3.331 <1.666 <1.666 <3.331 <3.331 <3.331 <3.331 <8.328 <3.331 <1.666 <3.331 <3.331 <33.31 447.3

44.33 29.82 4.016 83.14 2.713 18.74 2.6 63.65 77.69 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 447.3

2.5 1.6 0.29 4.7 0.14 1.3 0.17 3 4.7 0.64 0.64 2.3 1.3

0.1477 0.077535 0.03258 0.1722 0.01626 0.075235 0.080175 0.07802 0.2084 0.675 0.675 2.5 1.35

8.2 5.6 0.8 17 0.5 3.9 0.39 12 16 0.19 0.19 0.69 0.38

2.3

2.5

0.68

1.3 0.1 20 2 0.2 1.3 1.3 0.64 1.3 1.3 0.64 3 3.2 0.64 0.64

1.35 0.1 18.39 1.839 0.1839 1.35 1.35 0.675 1.35 1.35 0.675 3 3.375 0.675 0.675

0.4 0 5.5 0.55 0.055 0.4 0.4 0.19 0.4 0.4 0.19 0 1 0.2 0.2

6.4 0.64 0.64 0.64 2.6 1.3 0.64 0.64 1.3 1.3 1.3 1.3 3.2 1.3 0.64 1.3 1.3 14 14

6.75 0.675 0.675 0.675 2.7 1.35 0.675 0.675 1.35 1.35 1.35 1.35 3.375 1.35 0.675 1.35 1.35 15 4.5315

2 0.2 0.2 0.2 0.8 0.4 0.2 0.2 0.4 0.4 0.4 0.4 1 0.4 0.2 0.4 0.4 3.7 66

<20

25.58

2.4

#VALUE!

40 49 28 49

5 11 28 11

<20 <68 0 <40

25.58 99.5 ND 51.04

25.58 2233 0 2233

25.58 2233 ND 2233

11 148

10 34.865

2.6 389

126

390

#VALUE! #VALUE! #VALUE! #VALUE!

TPH C10 - C14

mg/kg

TPH+C10 - C36 (Sum of total) TPH C7-C36 TPH_C6-C9 ALIPHATIC TPH+C15 - C36 (Sum of total)

mg/kg mg/kg mg/kg mg/kg

200

360 120 - (2000) / NA1,2,3,a (1500)-(8900) / NA1,2,3,b NA

Page 14 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 AECOM Soil Sampling Results (2012) Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group ChemName

Asbestos VOCs

Units

Auckland AKL Council MfE MfE Sheep Sch 10 Disch Gasworks Dip 2006ALWP 1997-IND IND Background

NES 2011 COMM / IND

Statistical Summary Number of Number of Minimum Minimum Results Detects Concentration Detect

Maximum Maximum Average Median Standard Number of Concentration Detect Concentration Concentration Deviation Guideline Exceedances

3 3 3 3 3 3 3 3 3 11 3 3 3 11 3 3 3 3 11 3 3 11 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 11 11 3 3 3 3 3 3 3 3 3 3

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

<0.3181 <0.3181 <1 <1 <0.4 <0.4 <0.3181 <0.3181 <1 <0.1348 <0.3181 <1 <1 <0.2695 <1 <0.7181 <1 <0.3181 <0.2695 <1 <2 <0.2695 <0.3181 <0.3181 <10 <0.3181 <0.3181 <1 <3 <6 <0.3181 <0.3181 <0.3181 <1 <0.3181 <1 <1 <1 <1 <10 <0.2695 <0.1348 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.4 <1 <0.4

ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

<0.5296 <0.5296 <1 <1 <0.5296 <0.5296 <0.5296 <0.5296 <1 <1.496 <0.5296 <1 <1 <2.992 <1 <1.059 <1 <0.5296 <2.992 <1 <2 <2.992 <0.5296 <0.5296 <10 <0.5296 <0.5296 <1 <3 <6 <0.5296 <0.5296 <0.5296 <1 <0.5296 <1 <1 <1 <1 <10.59 <2.992 <1.666 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <1 <0.5296

ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

0.2 0.2 0.5 0.5 0.22 0.22 0.2 0.2 0.5 0.5 0.2 0.5 0.5 0.95 0.5 0.42 0.5 0.2 0.95 0.5 1 0.95 0.2 0.2 5 0.2 0.2 0.5 1.5 3 0.2 0.2 0.2 0.5 0.2 0.5 0.5 0.5 0.5 5.1 0.95 0.64 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.22 0.5 0.22

0.1839 0.1839 0.5 0.5 0.2 0.2 0.1839 0.1839 0.5 0.6565 0.1839 0.5 0.5 1.3135 0.5 0.3839 0.5 0.1839 1.3135 0.5 1 1.3135 0.1839 0.1839 5 0.1839 0.1839 0.5 1.5 3 0.1839 0.1839 0.1839 0.5 0.1839 0.5 0.5 0.5 0.5 5 1.3135 0.675 0.1839 0.1839 0.1839 0.1839 0.1839 0.1839 0.1839 0.2 0.5 0.2

0.055 0.055 0 0 0.037 0.037 0.055 0.055 0 0.27 0.055 0 0 0.61 0 0.092 0 0.055 0.61 0 0 0.61 0.055 0.055 0 0.055 0.055 0 0 0 0.055 0.055 0.055 0 0.055 0 0 0 0 0.17 0.61 0.2 0.055 0.055 0.055 0.055 0.055 0.055 0.055 0.037 0 0.037

Number of Guideline Exceedances (Detects Only)

Notes: -

not analysed Grey shaded RPD values - exceeds 30% for inorganic and 50% for organic analyses ND - "Not Detected" MATRIX DESCRIPTION ABBREVIATIONS: AVFT - Auckland Volcanic Field Tuff WG - Waitemata Group 1. Ministry for the Environment, 2011. Guidelines for Assessing and Managing Petroleum Hydrocarbon Contaminated Sites in New Zealand 2. Values taken from Table 4.11 and Table 4.14 of the Oil Industry Guidelines. 3. Soil type chosen for comparison to the Oil Industry Guideline Tier 1 acceptance criteria for Sand, Sandy Silt and Silty Clay. Groundwater encountered ranged from approximately 2.4 - 5.4 m bgl. Brackets denote values that exceed threshold likely to correspond to formation of residual separate phase hydrocarbons. NA - indicates contaminant not limiting as estimated health-based criterion is significantly higher than that likely to be encountered on site. The following notes indicate the limiting exposure pathway for each criterion: a = maintenance/excavation worker exposure; b = exceeds PAH surrogate

Page 15 of 15 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T1 - Detectable TPH and BTEX Soil Sample Analytical Results TP104

Borehole

BH167

AECOM Sample Reference

BH167 _0.1-0.2

TP104_0.2

TP104_6.7

TP105_0.2

TP108_0.2

TP109_1-1.1

985965_1

986792_1

986792_2

986803_1

986880_1

986814_3

Laboratory Sample Reference Sample depth (m bgl)

TP105

TP108

TP109

0.1-0.2

0.2

6.7

0.2

1.0-1.1

Sample Date

09-Mar-12

13-Mar-12

13-Mar-13

Sample Type Units

Primary

Field Soil Type

mg/kg

Sandy Gravel

Gravels & Silts

Silty Gravel

Gravel

Sandy Silt

Oil Industry Guidelines: Tier 1 Soil Acceptance Criteria

All Pathways Soil Acceptance Criteria 2 Commercial/Industrial Depth of contamination Surface (< 1 m) / 1 m - 4 m / > 4 m

Sand

Guideline Soil Typ 3

Sandy SILT

Silty CLAY

TPH TPH C7 - C9 TPH C10 - C14 TPH C15 - C36 TPH C7 - C36 (Total)

<9 <20

<8 <20

<20

<9 <20

120 m / 120 m / (12000) v x

(500) m / (500) m / 12000 v x

(1500) / (1900) / (2100) (1700) / (2200) / (3400) NA / NA / NA NA / NA / NA

1020

210

1130

132

1023.5

209.3

1126.3

132.5

99.5

<70

<0.05

3.0 m / 3.0 m / 9.3 v

(8800) v / (20000) m / NA x

(1900) x / (8900) x / NA NA / NA / NA -

BTEX Benzene Toluene Ethylbenzene

<0.05 <0.05

(94)

/ (94)

/ (770)

3.6 v / 7.2 v / 9.3 v v v

(270) / (480)

7.2 v / (20) v / 54 v

/ (790)

(670) v / (3100) v / (10000) v

(200) / (300) / (450) -

(350) v / (2600) v / (9100) v

m&p-Xylene

<0.1

(180) / (300) / (390) -

o-Xylene

<0.05

(150) m / (150) m / (580) v

(200) v / (420) v / (590) v

(510) v / (2300) v / 7300 v

Xylene Total

Notes 1. Ministry for the Environment, 2011. Guidelines for Assessing and Managing Petroleum Hydrocarbon Contaminated Sites in New Zealand (Oil Industry Guidelines). 2. Values taken from Table 4.11 and Table 4.14 of the Oil Industry Guidelines. 3. Soil type chosen for comparison to the Oil Industry Guideline Tier 1 acceptance criteria. Groundwater encountered at approximately 2.4-5.4 m bgl. Brackets denote values that exceed threshold likely to correspond to formation of residual separate phase hydrocarbons. NA - indicates contaminant not limiting as estimated health-based criterion is significantly higher than that likely to be encountered on site. The following notes indicate the limiting exposure pathway for each criterion: v - volatilisation, m - maintenance/excavation worker exposure, x - exceeds PAH surrogate

25 July 2012 (Revision 4.0) T1 Detectable Hydrocarbon Results.xlsx

Page 1 of 1 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T2 - AECOM Groundwater Sampling Results QA/QC (2012) Groundwater Monitoring Data

Chem_Group

BTEX

ChemName

Benzene Ethylbenzene Toluene Xylene (m & p) Xylene (o) Total Xylene (ESDAT) Captan Fungicides Difenoconazole Iprodione Metalaxyl Flusilazole (NuStar) Prochloraz Propiconazole Systhane Vinclozolin Acetochlor Herbicides Bromacil Butachlor Chlorotoluron Cyanazine Diuron Fluometuron Haloxyfop-methyl Hexazinone Linuron Metachlor Metolachlor Molinate Norflurazon Oxyfluorfen Pendimethalin Prometryn Propanil Propazine Simazine Simetryn Terbacil Terbutryn Thiobencarb Trifluralin Ammonia as N (Filtered) Inorganics Cyanide Total Hardness as CaCO3 (Filtered) Arsenic (Filtered) Metals Cadmium (Filtered) Calcium (Filtered) Chromium (Filtered) Copper (Filtered) Lead (Filtered) Magnesium (Filtered) Mercury (Filtered) Nickel (Filtered) Potassium (Filtered) Sodium (Filtered) Zinc (Filtered) Organic Terbutylazine Organochlorine 2,4-DDT Pesticides 4,4-DDE a-BHC Aldrin Aldrin + Dieldrin b-BHC chlordane cis-Chlordane trans-chlordane d-BHC DDD DDT DDT+DDE+DDD Dieldrin Endosulfan I Endosulfan II Endosulfan sulphate Endrin Endrin aldehyde Endrin ketone g-BHC (Lindane) Heptachlor Heptachlor epoxide Hexachlorobenzene Methoxychlor o,p-DDD o,p''''-DDE

Units

µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L µg/L µg/L µg/L mg/L µg/L mg/L mg/L mg/L µg/L mg/L mg/L mg/L µg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L mg/L

LocCode

MW11

MW35

MW35_D

Sampled_Date-Time SampleCode Lab_Report_Number Sample_Type

18/04/2012 999491_1 999491_2 Normal

18/04/2012 999491_2 999491_2 Normal

18/04/2012 999491_8 999491_2 Duplicate

ANZECC (2000) ANZECC (2000) Ecosystems Ecosystems Fresh Water Marine Water (80%) (80%) 2000 1300

10 300 800

600

100

400 40 0.7 20

400 20 10 0.007

0.07 0.002

0.035

40 0.008 0.009

0.03

0.018

0.014

0.6

0.0008

0.036

0.01 0.004

0.0025 0.0094

0.008 0.012

0.05 2 0.01

0.0054 0.017

0.0014 0.56

0.007 0.08

0.031

0.043

0.04 0.27

0.2

0.04

0.06

1 0.7

0.02

GW Programme R01 Trip Blank (TB01) 18/04/2012 17/04/2012 17/04/2012 18/04/2012 17/04/2012 8/03/2012 11/03/2012 8/03/2012 26/03/2012 11/03/2012 18/04/2012 17/04/2012 999491_3 999491_4 999491_5 999491_7 999491_6 985965_39 986814_4 985965_38 992563_9 997729_11 999491_9 999491_10 999491_2 999491_2 999491_2 999491_2 999491_2 985965_3 986814_3 985965_3 992563_2 997729_2 999491_2 999491_2 Normal Normal Normal Normal Normal Trip_B Trip_B Rinsate Rinsate Rinsate Rinsate Trip _B MW45

MW103

MW105

MW167

MW5b

QA/QC

<1 <1 <1 <2 <1 -

NZDWS 2005

640

0.057

RPD %

QA/QC Water Data Soil Programme TP106 BH105 BH173

<1 <1 <1 <2 <1 <3 1433 4457 0.0029 <0.001 0.01154 0.02613 0.00005225 <0.0005 0.001109 <0.005 <0.0005 <0.005 0.0006196 <0.001 <0.00008 <0.00008 <0.0005 <0.005 0.002706 <0.01 -

<1 <1 <1 <2 <1 <3 0.0421 <0.0005 <0.005 <0.005 <0.001 <0.00008 <0.005 <0.01 -

46.812253 -

<0.7 <0.7 <0.3333 <0.3333 <0.3333 <2 <0.3 <0.3333 <0.3333 <0.3333 <0.3333 <0.0003333 <0.7 <0.3333 <0.3333 <0.3333 <0.3333 <0.2 <0.3333 <0.3333 <0.3 <0.0007 <0.7 <0.2 <0.3333 <0.0002 <2 <0.0002 <0.0003333 <0.0003333 <0.3333 <0.0003333 <0.0003333 <0.0003333 63.15 <0.001 <0.1 <0.005 <0.05 <0.05 <0.01 <0.00008 <0.05 <0.1 <0.0002 <0.2 <0.2 <0.2 <0.1 <0.2 <0.2 <0.4 <0.1 <0.1 <0.2 <0.2 <0.2 <0.6 <0.1 <0.2 <0.2 <0.2 <0.1 <0.1 <0.2 <0.2 <0.1 <0.1 <0.8 <0.1 <0.0002 <0.0002

1138 <0.001 <0.02 <0.001 <0.01 <0.01 0.01562 <0.00008 0.02921 0.03828 -

<0.001 <0.00005 <0.0005 <0.0005 0.0007233 <0.00008 0.005204 0.01154 -

18.75 0.002197 <0.00005 <0.0005 <0.0005 <0.0001 0.001005 0.001596 -

<1 <1 <1 <2 <1 <3 <0.001 0.0001077 0.001739 0.07549 0.004241 <0.00008 0.003083 0.03444 -

<1 <1 <1 <2 <1 <0.001 <0.00005 <0.0005 <0.0005 <0.0001 <0.00008 <0.0005 0.001298 -

<1 <1 <1 <2 <1 <0.02 <0.001 <0.01 <0.01 <0.002 <0.01 <0.02 -

<1 <1 <1 <2 <1 <0.001 <0.00005 <0.0005 <0.0005 <0.0001 <0.0005 0.005527 -

<0.001 <0.00005 <0.0005 <0.0005 <0.0001 <0.0005 <0.001 -

<1 <1 <1 <2 <1 <3 -

Page 1 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T2 - AECOM Groundwater Sampling Results QA/QC (2012) Groundwater Monitoring Data

Chem_Group

ChemName

BTEX Organophosph Azinophos methyl orous Chlorpyrifos Pesticides Chlorpyrifos-methyl Diazinon Dichlorvos Dimethoate Malathion Methyl parathion Naled (Dibrom) Terbufos other 3-Iodo-2-propynyl butyl carbamate Assure Baythroid Chlorothalonil Di(2-ethylhexyl)adipate Metribuzin Oxadiazon Paclobutrazol Propachlor Pyriproxyfen Tebuconazole Triazophos PAH PAHs (Sum of total) PAHs Benzo[a]pyrene Toxic Equivalence (TEF) 2-chloronaphthalene 2-methylnaphthalene Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a) pyrene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzo[b]fluoranthene + Benzo[j]fluoranthene Benzo[b+j]fluoranthene Chrysene Dibenz(a,h)anthracene Fluoranthene Fluorene Indeno(1,2,3-c,d)pyrene Naphthalene Phenanthrene Pyrene PCBs PCB 101 PCB 118 PCB 138 PCB 153 PCB 180 PCB 28 PCB 52 PCB 105 PCB 114 PCB 123 PCB 126 PCB 156 PCB 157 PCB 167 PCB 169 PCB 189 PCB 77 PCB 81 PCB-110 PCB-121 PCB-128 PCB-141 PCB-149 PCB-151 PCB-159 PCB-170 PCB-18 PCB-194 PCB-206 PCB-31 PCB-44 PCB-49 PCB-60 PCB-86

Units

µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L

LocCode

MW11

MW35

MW35_D

Sampled_Date-Time SampleCode Lab_Report_Number Sample_Type

18/04/2012 999491_1 999491_2 Normal

18/04/2012 999491_2 999491_2 Normal

18/04/2012 999491_8 999491_2 Duplicate

<0.7 <0.3333 <0.0003333 <0.2 <0.7 <0.7 <0.3333 <0.3333 <2 <0.3333 <0.002

<2.5

<0.3333 <0.3333 <0.3333 <0.3333 <0.3333 <0.3333 <0.3333 <0.3333 <0.0003333 <0.0003333 <2.5

<2.5

ANZECC (2000) ANZECC (2000) Ecosystems Ecosystems Marine Water Fresh Water (80%) (80%) 0.11 1.2 0.3

4 40

µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L mg/L µg/L

MW45

MW103

MW105

MW167

MW5b

QA/QC

NZDWS 2005

2 0.3 1.1

RPD %

QA/QC Water Data Soil Programme TP106 BH105 BH173

70 200

µg/L

<0.05

µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L

<0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1

0.7

mg/L

mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L

<0.0001 <0.1 <0.1 <0.1 <0.2 <0.1 <0.5 <0.4 <0.2 -

<0.0001 <0.1 <0.1 <0.1 <0.2 <0.1 <0.5 <0.4 <0.2 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1

<0.0001 <0.1 <0.1 <0.1 <0.2 <0.1 <0.5 <0.4 <0.2 -

120

Page 2 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T2 - AECOM Groundwater Sampling Results QA/QC (2012) Groundwater Monitoring Data

Chem_Group

BTEX Pesticides

ChemName

Atrazine Carbaryl Carbofuran Cyhalothrin/Karate Cypermethrins(total) Deltamethrin Fluvalinate Parathion Permethrin Pirimicarb Pirimiphos-methyl Phenols 2,4-dimethylphenol 2-methylphenol 2-nitrophenol 3-&4-methylphenol 4,6-Dinitro-2-methylphenol 4-chloro-3-methylphenol 4-nitrophenol Phenol Phenols Polychlorinated Decachlorobiphenyl PCBs (Sum of total) Biphenyls 2,4,5-trichlorophenol SVOCs 2,4,6-trichlorophenol 2,4-dichlorophenol 2,4-Dinitrotoluene 2,6-dinitrotoluene 2-chlorophenol 3,3-Dichlorobenzidine 4-bromophenyl phenyl ether 4-chlorophenyl phenyl ether Aniline Benzyl alcohol Bis(2-chloroethoxy) methane Bis(2-chloroethyl)ether Bis(2-chloroisopropyl) ether Bis(2-ethylhexyl) phthalate Butyl benzyl phthalate Carbazole Dibenzofuran Diethylphthalate Dimethyl phthalate Di-n-butyl phthalate Di-n-octyl phthalate Diphenylamine Hexachlorocyclopentadiene Hexachloroethane Nitrobenzene N-nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol TPH C6-C36 C7 - C9 TPH C6 - C9 TPH C10 - C14 TPH+C10 - C36 (Sum of total) TPH C7-C36 TPH_C6-C9 ALIPHATIC TPH+C15 - C36 (Sum of total) VOCs 1,2,4-trichlorobenzene 1,2-dichlorobenzene 1,3-dichlorobenzene 1,4-dichlorobenzene Hexachlorobutadiene Isophorone Notes: -

Units

mg/L µg/L mg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L mg/L µg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L

LocCode

MW11

MW35

MW35_D

Sampled_Date-Time SampleCode Lab_Report_Number Sample_Type

18/04/2012 999491_1 999491_2 Normal

18/04/2012 999491_2 999491_2 Normal

18/04/2012 999491_8 999491_2 Duplicate

0.024 <0.1 <200 <200 <0.7 <400 -

0.024 <0.7 <60 <200 <200 <57 <400 -

<0.7 <60 <200 <200 <57 <400 -

ANZECC (2000) ANZECC (2000) Ecosystems Ecosystems Marine Water Fresh Water (80%) (80%) 0.15 0.015

0.002 0.008

0.1

720

95 270 250

200

870

4800

1300 5100 64.6

500 1300

300 270 520 100

240

MW103

MW105

<0.1 <0.1 <200 <200 <0.7 <400 -

<0.1 <200 <200 <0.7 <400 -

MW167

MW5b

QA/QC

NZDWS 2005

0.04

1200

RPD %

QA/QC Water Data Soil Programme TP106 BH105 BH173

1500 400 0.7

<0.0003333 <0.3333 <0.0003333 <0.3333 <0.7 <0.0003333 <0.3 <0.3333 <0.2 <0.3333 <0.0003333 <0.1 <5 <0.7 <0.1 <200 <200 <0.7 <400 -

0.0022 <0.1 <200 <200 <0.7 <400 -

<0.7 <60 <200 <200 <57 <400 -

<0.1 <200 <0.7 <400 -

<0.375 <1000 <3.375 <2000 -

<0.1 <200 <0.7 <400 -

<0.1 <200 <200 <0.7 <400 -

<0.1 <200 <200 <0.7 <-3 <400 -

not analysed Grey shaded RPD values - exceeds 30% for inorganic and 50% for organic analyses

Page 3 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T2 - AECOM Groundwater Sampling Results QA/QC (2012) LocCode Sampled_Date-Time SampleCode Lab_Report_Number Sample_Type Chem_Group

BTEX

ChemName

Benzene Ethylbenzene Toluene Xylene (m & p) Xylene (o) Total Xylene (ESDAT) Fungicides Captan Difenoconazole Iprodione Metalaxyl Flusilazole (NuStar) Prochloraz Propiconazole Systhane Vinclozolin Herbicides Acetochlor Bromacil Butachlor Chlorotoluron Cyanazine Diuron Fluometuron Haloxyfop-methyl Hexazinone Linuron Metachlor Metolachlor Molinate Norflurazon Oxyfluorfen Pendimethalin Prometryn Propanil Propazine Simazine Simetryn Terbacil Terbutryn Thiobencarb Trifluralin Inorganics Ammonia as N (Filtered) Cyanide Total Hardness as CaCO3 (Filtered) Metals Arsenic (Filtered) Cadmium (Filtered) Calcium (Filtered) Chromium (Filtered) Copper (Filtered) Lead (Filtered) Magnesium (Filtered) Mercury (Filtered) Nickel (Filtered) Potassium (Filtered) Sodium (Filtered) Zinc (Filtered) Organic Terbutylazine Organochlorine 2,4-DDT 4,4-DDE Pesticides a-BHC Aldrin Aldrin + Dieldrin b-BHC chlordane cis-Chlordane trans-chlordane d-BHC DDD DDT DDT+DDE+DDD Dieldrin Endosulfan I Endosulfan II Endosulfan sulphate Endrin Endrin aldehyde Endrin ketone g-BHC (Lindane) Heptachlor Heptachlor epoxide Hexachlorobenzene Methoxychlor o,p-DDD o,p''''-DDE

Units

ANZECC (2000) ANZECC (2000) Ecosystems Ecosystems Fresh Water Marine Water (80%) (80%) 2000 1300

Statistical Summary NZDWS 2005 Number Number of Minimum Minimum Detects Concentra Detect of tion Results 10 300 800

640 600

100

400 40 0.7 20

400 20 10 0.007

0.057

0.07 0.002

0.035

40 0.008 0.009

0.03

0.018

0.014

0.6

0.0008

0.036

0.01 0.004

0.0025 0.0094

0.008 0.012

0.05 2 0.01

0.0054 0.017

0.0014 0.56

0.007 0.08

0.031

0.043

0.04 0.27

0.2

0.04

0.06

1 0.7

0.02

4 4 4 4 4 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 5 4 0 9 9 1 9 9 9 1 8 9 1 1 9 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 1 0 5 3 1 3 2 5 1 1 5 1 1 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

<1 ND <1 ND <1 ND <2 ND <1 ND <3 ND <0.7 ND <0.7 ND <0.3333 ND <0.3333 ND <0.3333 ND <2 ND <0.3 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.0003333ND <0.7 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.2 ND <0.3333 ND <0.3333 ND <0.3 ND <0.0007 ND <0.7 ND <0.2 ND <0.3333 ND <0.0002 ND <2 ND <0.0002 ND <0.0003333ND <0.0003333ND <0.3333 ND <0.0003333ND <0.0003333ND <0.0003333ND 18.75 18.75 <0.001 0.0029 0 ND <0.001 0.002197 <0.00005 0.00005225 0 ND <0.0005 0.001109 <0.0005 0.07549 <0.0001 0.0006196 0 ND <0.00008 ND <0.0005 0.001005 0 ND 0 ND 0.001596 0.001596 <0.0002 ND <0.2 ND <0.2 ND <0.2 ND <0.1 ND <0.2 ND <0.2 ND <0.4 ND <0.1 ND <0.1 ND <0.2 ND <0.2 ND <0.2 ND <0.6 ND <0.1 ND <0.2 ND <0.2 ND <0.2 ND <0.1 ND <0.1 ND <0.2 ND <0.2 ND <0.1 ND <0.1 ND <0.8 ND <0.1 ND <0.0002 ND <0.0002 ND

Maximu Maximum m Detect Concentr ation <1 ND <1 ND <1 ND <2 ND <1 ND <3 ND <0.7 ND <0.7 ND <0.3333 ND <0.3333 ND <0.3333 ND <2 ND <0.3 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.0003333 ND <0.7 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.2 ND <0.3333 ND <0.3333 ND <0.3 ND <0.0007 ND <0.7 ND <0.2 ND <0.3333 ND <0.0002 ND <2 ND <0.0002 ND <0.0003333 ND <0.0003333 ND <0.3333 ND <0.0003333 ND <0.0003333 ND <0.0003333 ND 4457 4457 0.0029 0.0029 0 ND 46.8123 46.81225267 <0.005 0.0001077 0 ND <0.05 0.001739 0.07549 0.07549 0.01562 0.01562 0 ND <0.00008 ND <0.05 0.02921 0 ND 0 ND <0.1 0.03828 <0.0002 ND <0.2 ND <0.2 ND <0.2 ND <0.1 ND <0.2 ND <0.2 ND <0.4 ND <0.1 ND <0.1 ND <0.2 ND <0.2 ND <0.2 ND <0.6 ND <0.1 ND <0.2 ND <0.2 ND <0.2 ND <0.1 ND <0.1 ND <0.2 ND <0.2 ND <0.1 ND <0.1 ND <0.8 ND <0.1 ND <0.0002 ND <0.0002 ND

Average Median Standard Concentr Concentration Deviation ation 0.5 0.5 0.5 1 0.5 1.5

0 0 0 0 0 0

1422 0.0011

0.5 0.5 0.5 1 0.5 1.5 0.35 0.35 0.16665 0.16665 0.16665 1 0.15 0.16665 0.16665 0.16665 0.16665 0.00016665 0.35 0.16665 0.16665 0.16665 0.16665 0.1 0.16665 0.16665 0.15 0.00035 0.35 0.1 0.16665 0.0001 1 0.0001 0.00016665 0.00016665 0.16665 0.00016665 0.00016665 0.00016665 1138 0.0005

5.2 0.00046

0.01154 0.00017885

16 0.00084

0.0048 0.014 0.0034

0.0021195 0.0025 0.00067145

0.0083 0.026 0.0053

0.00004 0.0086

0.00004 0.0027915

0 0.012

0.019

0.00827 0.0001 0.1 0.1 0.1 0.05 0.1 0.1 0.2 0.05 0.05 0.1 0.1 0.1 0.3 0.05 0.1 0.1 0.1 0.05 0.05 0.1 0.1 0.05 0.05 0.4 0.05 0.0001 0.0001

0.019

1810 0.0012

Number of Guidelin e 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 2 0 0 5 2 0 0 2 0 0 3 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0

Number of Guideline Exceedances (Detects 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 0 1 1 0 0 1 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Page 4 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T2 - AECOM Groundwater Sampling Results QA/QC (2012) LocCode Sampled_Date-Time SampleCode Lab_Report_Number Sample_Type Chem_Group

ChemName

BTEX Benzene Organophosph Azinophos methyl orous Chlorpyrifos Pesticides Chlorpyrifos-methyl Diazinon Dichlorvos Dimethoate Malathion Methyl parathion Naled (Dibrom) Terbufos other 3-Iodo-2-propynyl butyl carbamate Assure Baythroid Chlorothalonil Di(2-ethylhexyl)adipate Metribuzin Oxadiazon Paclobutrazol Propachlor Pyriproxyfen Tebuconazole Triazophos PAH PAHs (Sum of total) PAHs Benzo[a]pyrene Toxic Equivalence (TEF) 2-chloronaphthalene 2-methylnaphthalene Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a) pyrene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzo[b]fluoranthene + Benzo[j]fluoranthene Benzo[b+j]fluoranthene Chrysene Dibenz(a,h)anthracene Fluoranthene Fluorene Indeno(1,2,3-c,d)pyrene Naphthalene Phenanthrene Pyrene PCBs PCB 101 PCB 118 PCB 138 PCB 153 PCB 180 PCB 28 PCB 52 PCB 105 PCB 114 PCB 123 PCB 126 PCB 156 PCB 157 PCB 167 PCB 169 PCB 189 PCB 77 PCB 81 PCB-110 PCB-121 PCB-128 PCB-141 PCB-149 PCB-151 PCB-159 PCB-170 PCB-18 PCB-194 PCB-206 PCB-31 PCB-44 PCB-49 PCB-60 PCB-86

Statistical Summary NZDWS 2005 Number Number of Minimum Minimum of Detects Concentra Detect Results tion 1 1 1 1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0 0 0 0

<0.7 ND <0.3333 ND <0.0003333ND <0.2 ND <0.7 ND <0.7 ND <0.3333 ND <0.3333 ND <2 ND <0.3333 ND <0.002 ND

Maximu Maximum m Detect Concentr ation <0.7 ND <0.3333 ND <0.0003333 ND <0.2 ND <0.7 ND <0.7 ND <0.3333 ND <0.3333 ND <2 ND <0.3333 ND <0.002 ND

1 1 1 0 1 1 1 1 1 1 1 9

0 0 0 0 0 0 0 0 0 0 0 1

<0.3333 ND <0.3333 ND <0.3333 ND 0 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.0003333ND <0.0003333ND <2.5 ND

<0.3333 ND <0.3333 ND <0.3333 ND 0 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.3333 ND <0.0003333 ND <0.0003333 ND <2.5 ND

0 0 0 0 0 0 0 0 0 0 0 0

µg/L

µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L

1 1 9 9 9 9 9 9 9

1 1 1 1 1 1 1 1 1

0 0 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1

ND ND ND ND ND ND ND ND ND

0 0 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1

ND ND ND ND ND ND ND ND ND

0 0 0 0 0 0 0 0 0

Units

µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L

ANZECC (2000) ANZECC (2000) Ecosystems Ecosystems Fresh Water Marine Water (80%) (80%) 2000 1300 0.11 1.2 0.3

10 4 40

2 0.3 1.1

µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L mg/L µg/L

70 200

0.7

mg/L

9 9 9 9 9 9 9 9 9 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

120

Average Median Standard Concentr Concentration Deviation ation 0.35 0.16665 0.00016665 0.1 0.35 0.35 0.16665 0.16665 1 0.16665 0.001 0.16665 0.16665 0.16665

1.3

0.16665 0.16665 0.16665 0.16665 0.16665 0.00016665 0.00016665 1.25

0.05 0.05 0.05 0.05 0.05 0.05 0.05

0 0 0 0 0 0 0

0.00005 0.05 0.05 0.05 0.1 0.05 0.25 0.2 0.1

0.00005 0.05 0.05 0.05 0.1 0.05 0.25 0.2 0.1 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.00005 0.00005 0.00005 0.00005 0.00005 0.00005 0.00005 0.00005 0.00005 0.00005 0.00005 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05

0 0 0 0 0 0 0 0 0

Number of Guidelin e 1 1 0 0 0 1 0 0 0 0 0

Number of Guideline Exceedances (Detects 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Page 5 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T2 - AECOM Groundwater Sampling Results QA/QC (2012) LocCode Sampled_Date-Time SampleCode Lab_Report_Number Sample_Type Chem_Group

BTEX Pesticides

ChemName

Benzene Atrazine Carbaryl Carbofuran Cyhalothrin/Karate Cypermethrins(total) Deltamethrin Fluvalinate Parathion Permethrin Pirimicarb Pirimiphos-methyl Phenols 2,4-dimethylphenol 2-methylphenol 2-nitrophenol 3-&4-methylphenol 4,6-Dinitro-2-methylphenol 4-chloro-3-methylphenol 4-nitrophenol Phenol Phenols Polychlorinated Decachlorobiphenyl Biphenyls PCBs (Sum of total) 2,4,5-trichlorophenol SVOCs 2,4,6-trichlorophenol 2,4-dichlorophenol 2,4-Dinitrotoluene 2,6-dinitrotoluene 2-chlorophenol 3,3-Dichlorobenzidine 4-bromophenyl phenyl ether 4-chlorophenyl phenyl ether Aniline Benzyl alcohol Bis(2-chloroethoxy) methane Bis(2-chloroethyl)ether Bis(2-chloroisopropyl) ether Bis(2-ethylhexyl) phthalate Butyl benzyl phthalate Carbazole Dibenzofuran Diethylphthalate Dimethyl phthalate Di-n-butyl phthalate Di-n-octyl phthalate Diphenylamine Hexachlorocyclopentadiene Hexachloroethane Nitrobenzene N-nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol TPH C6-C36 C7 - C9 TPH C6 - C9 TPH C10 - C14 TPH+C10 - C36 (Sum of total) TPH C7-C36 TPH_C6-C9 ALIPHATIC TPH+C15 - C36 (Sum of total) VOCs 1,2,4-trichlorobenzene 1,2-dichlorobenzene 1,3-dichlorobenzene 1,4-dichlorobenzene Hexachlorobutadiene Isophorone Notes: -

Units

µg/L mg/L µg/L mg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L mg/L µg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L

ANZECC (2000) ANZECC (2000) Ecosystems Ecosystems Fresh Water Marine Water (80%) (80%) 2000 1300 0.15 0.015

Statistical Summary NZDWS 2005 Number Number of Minimum Minimum of Detects Concentra Detect Results tion 10 0.002 0.008

0.04

0.1

1200

720

95 270 250

200

870

4800

1300 5100 64.6

500 1300

300 270 520 100

240 1500 400 0.7

1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 4 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 4 6 4 9 9 6 4 9 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0

<0.0003333ND <0.3333 ND <0.0003333ND <0.3333 ND <0.7 ND <0.0003333ND <0.3 ND <0.3333 ND <0.2 ND <0.3333 ND <0.0003333ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0.0022 0.0022 <0.1 ND <5 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND <0.7 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND <0.7 ND <0.1 ND <60 ND <200 ND <200 ND <0.7 ND <57 ND <400 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND

Maximu Maximum m Detect Concentr ation <0.0003333 ND <0.3333 ND <0.0003333 ND <0.3333 ND <0.7 ND <0.0003333 ND <0.3 ND <0.3333 ND <0.2 ND <0.3333 ND <0.0003333 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND <0.1 0.024 <0.1 ND <5 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND <0.7 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND <0.7 ND <0.1 ND <60 ND <200 ND <200 ND <0.7 ND <57 ND <400 ND 0 ND 0 ND 0 ND 0 ND 0 ND 0 ND

Average Median Standard Concentr Concentration Deviation ation 0.00016665 0.16665 0.00016665 0.16665 0.35 0.00016665 0.15 0.16665 0.1 0.16665 0.00016665

0.025

0.024 0.05 2.5

0.02

0.35

0.35 0.05 30 100 100 0.35 29 200

0.35 0.05 30 100 100 0.35 28.5 200

0 0 0 0 0 0 0 0

Number of Guidelin e 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Number of Guideline Exceedances (Detects 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

not analysed Grey shaded RPD values - exceeds 30% for inorganic and 50% for organic analyses

Page 6 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria)

Chem_Group

Asbestos 1. CAHs

BTEX

Inorganics

Metals

Organochlorine Pesticides

Other

ChemName

Units

cis-1,2-dichloroethene Trichloroethene Tetrachloroethene Vinyl chloride Benzene Ethylbenzene Toluene Xylene (m & p) Xylene (o) Total Xylene (ESDAT) Chloride pH (Final) pH (Initial) Sulphate pH of Leaching Fluid Arsenic Boron Cadmium Calcium Chromium Copper Lead Magnesium Mercury Nickel Potassium Sodium Zinc 2,4-DDT 4,4-DDE a-BHC Aldrin Aldrin + Dieldrin b-BHC chlordane cis-Chlordane trans-chlordane d-BHC DDD DDT DDT+DDE+DDD Dieldrin Endosulfan I Endosulfan II Endosulfan sulphate Endrin Endrin aldehyde Endrin ketone g-BHC (Lindane) Heptachlor Heptachlor epoxide Hexachlorobenzene Methoxychlor o,p-DDD o,p''''-DDE Di(2-ethylhexyl)adipate Freon 113

Landfill Land Class A Class A Screen Leachate

Field_ID

BH102_1.1

Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

11/03/2012 10/03/2012 10/03/2012 26/03/2012 986810_5 986810_1 986810_2 992563_1 986810_2 986810_2 986810_2 992563_2 GRAVEL Gravelly Clayey Sandy SILT CLAY SAND

Landfill Class B Screen

Landfill Class B Leachate

4 10 1000 2000

0.2 0.5 50 100

0.4 1 100 200

0.02 0.05 5 10

2000

100

200

100 400 20

5 20 1

10 40 2

0.5 2 0.1

100 100

5 5

10 10

0.5 0.5

4 200

0.2 10

0.4 20

0.02 1

200

0.00016

0.00008

0.000016

0.000008

500 8

1500

50 0.4

0.8

150

0.04

<0.05 <0.05 <0.05 <0.1 <0.05 <0.15 3.212 <0.1 25.09 21.89 19.61 0.1036 19.42 69.49 -

BH103_0.5

ND <0.0551 <0.0551 <0.0551 <0.1102 <0.0551 <0.1653 <2 <0.1 25.69 25.27 20.88 <0.1 27.46 145 -

BH103_1.2

BH105_0.4-0.5 BH105_0.9-1.0 BH105_4.0-4.5 BH116_0.5-0.6 BH116_1.5-1.6 BH116_7.3-7.6 BH134_0.1-0.2 BH134_1.0-1.1BH134_3.0-3.2 BH154_0.2-0.3 BH154_3.0-3.2 BH162_0.2-0.3 BH162_1.5-1.7 BH162_2.3-2.5 BH167_0.1-0.2

26/03/2012 992563_2 992563_2 SILT

ND <0.05486 <0.05486 <0.05486 <0.1097 <0.05486 <0.1646 3.851 <0.1 11.71 28.2 9.58 <0.1 25.37 88.15 -

26/03/2012 992563_7 992563_2 SAND

5/03/2012 985965_6 985965_3 Silty SAND

<0.0572 <0.0572 <0.0572 <0.1144 <0.0572 <0.1716 3.038 <0.1 11.5 16.76 4.83 <0.1 14.7 34.33 -

5/03/2012 985965_8 985965_3 Silty CLAY

<0.06257 <0.06257 <0.06257 <0.1251 <0.06257 <0.1877 <2 <0.1 34.54 18.28 14.09 <0.1 11.17 38.46 -

5/03/2012 985965_12 985965_3 Siltstone

4.752 <0.1 12.68 26.55 8.617 <0.1 20.31 75.08 -

6/03/2012 985965_13 985965_3 Sandy GRAVEL

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 <2 <0.1 59.49 66.92 5.709 <0.1 264.7 57.16 -

6/03/2012 985965_15 985965_3 CLAY

<2 <0.1 13.95 4.278 3.69 <0.1 10.05 5.094 -

6/03/2012 985965_17 985965_3 Silty CLAY

3.552 <0.1 14.67 13.26 3.871 <0.1 <2 5.196 -

7/03/2012 985965_20 985965_3 SILT

7/03/2012 985965_23 985965_3 SILT

<2 0.1032 114.5 40.17 5.589 102.2 94.79 -

7/03/2012 985965_28 985965_3 CLAY

7/03/2012 985965_30 985965_3 SILT

7.054 <0.1 17.41 18.75 7.082 18.07 20.56 -

7/03/2012 985965_31 985965_3 SILT

<2 <0.1 6.311 11.86 6.445 9.803 16.51 -

6/03/2012 985965_1 985965_3 Sandy GRAVEL

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 5.13 8.52 4.93 25.45 0.2035 58.94 73.52 311.5 0.2001 150.9 158.3 -

Page 1 of 12 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria)

Chem_Group

ChemName

PAH PAHs

PAHs (Sum of total) mg/kg Benzo[a]pyrene Toxic Equivalence (TEF) mg/kg

Phenols

Solvents SVOCs

2-chloronaphthalene 2-methylnaphthalene Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a) pyrene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzo[b]fluoranthene + Benzo[j]fluoranthene Benzo[b+j]fluoranthene Chrysene Dibenz(a,h)anthracene Fluoranthene Fluorene Indeno(1,2,3-c,d)pyrene Naphthalene Phenanthrene Pyrene 2,4-dimethylphenol 2-methylphenol 2-nitrophenol 3-&4-methylphenol 4,6-Dinitro-2-methylphenol 4-chloro-3-methylphenol 4-nitrophenol Phenol Phenols Acetone MTBE 1,3,5-Trichlorobenzene 2,4,5-trichlorophenol 2,4,6-trichlorophenol 2,4-dichlorophenol 2,4-Dinitrotoluene 2,6-dinitrotoluene 2-chlorophenol Methyl Ethyl Ketone 3,3-Dichlorobenzidine 4-bromophenyl phenyl ether 4-chlorophenyl phenyl ether Aniline Benzyl alcohol Bis(2-chloroethoxy) methane Bis(2-chloroethyl)ether Bis(2-chloroisopropyl) ether Bis(2-ethylhexyl) phthalate Butyl benzyl phthalate Carbazole Dibenzofuran Diethylphthalate Dimethyl phthalate Di-n-butyl phthalate Di-n-octyl phthalate Hexachlorocyclopentadiene Hexachloroethane Nitrobenzene N-nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol

Units

Landfill Land Class A Class A Screen Leachate

300

Field_ID

BH102_1.1

Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

11/03/2012 10/03/2012 10/03/2012 26/03/2012 986810_5 986810_1 986810_2 992563_1 986810_2 986810_2 986810_2 992563_2 GRAVEL Gravelly Clayey Sandy SILT CLAY SAND

Landfill Class B Screen

BH103_1.2

26/03/2012 992563_2 992563_2 SILT

26/03/2012 992563_7 992563_2 SAND

5/03/2012 985965_6 985965_3 Silty SAND

5/03/2012 985965_8 985965_3 Silty CLAY

5/03/2012 985965_12 985965_3 Siltstone

6/03/2012 985965_13 985965_3 Sandy GRAVEL

6/03/2012 985965_15 985965_3 CLAY

6/03/2012 985965_17 985965_3 Silty CLAY

7/03/2012 985965_20 985965_3 SILT

7/03/2012 985965_23 985965_3 SILT

7/03/2012 985965_28 985965_3 CLAY

7/03/2012 985965_30 985965_3 SILT

7/03/2012 985965_31 985965_3 SILT

6/03/2012 985965_1 985965_3 Sandy GRAVEL

Landfill Class B Leachate

300

BH103_0.5

200

800

2 0.1

0.1 0.05

0.2 0.01

0.01 0.005

0.1

0.05

0.01

0.005

0.2

0.4

0.02

2000 8000 6000

100 400 300

200 800 600

10 40 30

10.13 1.436

4.639 0.6088

1.234 0.1393

<1.674 <0.002

<0.578 <0.002

<0.5702 <0.002

26.3 3.619

0.7519 0.0809

<0.5842 <0.002

1.34 0.2183

<0.681 0.0123

<0.6267 0.01424

12.12 1.895

<0.7874 0.05086

6 0.6005

<0.6991 0.02865

<0.6488 <0.002

437.8 50.46

<0.02409 0.1427 0.1491 0.7633 0.9765 0.9009 0.4646 -

<0.02915 0.04159 0.0549 0.3121 0.4071 0.3871 0.2001 -

<0.7075 <0.7075 <0.03036 <0.03036 <0.03036 0.07491 0.09021 0.1075 0.04505 <1.415

<0.1 <0.1 <0.1 <0.1 <0.1 <0.1 <0.1348 <0.1348 <0.1348 <0.1348

<0.0289 <0.0289 <0.0289 <0.0289 <0.0289 <0.0289 <0.0289 -

<0.02851 <0.02851 <0.02851 <0.02851 <0.02851 <0.02851 <0.02851 -

<0.675 <0.675 0.07083 0.1453 0.3592 1.958 2.47 2.653 1.061 2.619

<0.0342 <0.0342 <0.0342 0.03976 0.0609 0.05628 <0.0342 -

<0.02921 <0.02921 <0.02921 <0.02921 <0.02921 <0.02921 <0.02921 -

<0.02438 <0.02438 <0.02438 0.09835 0.1481 0.1318 0.06614 -

<0.03405 <0.03405 <0.03405 <0.03405 <0.03405 <0.03405 <0.03405 -

<0.03134 <0.03134 <0.03134 <0.03134 <0.03134 <0.03134 <0.03134 -

<0.03338 0.07645 0.1574 0.9072 1.257 1.053 0.5821 -

<0.03937 <0.03937 <0.03937 <0.03937 <0.03937 <0.03937 <0.03937 -

<0.7481 <0.7481 <0.03291 <0.03291 <0.03291 0.8677 0.4199 0.3112 0.1825 <1.496

<0.03496 <0.03496 <0.03496 <0.03496 <0.03496 <0.03496 <0.03496 -

<0.03244 <0.03244 <0.03244 <0.03244 <0.03244 <0.03244 <0.03244 -

0.8515 5.592 12.21 38.82 33.43 28.06 17.64 -

1.171 0.6644 0.1305 1.689 <0.02409 0.6604 <0.1204 0.4661 1.869 -

0.5307 0.291 0.05668 0.8485 <0.02915 0.2941 <0.1457 0.123 0.9907 -

<0.0289 <0.0289 <0.0289 <0.0289 <0.0289 <0.0289 <0.1445 <0.0289 <0.0289 -

<0.02851 <0.02851 <0.02851 <0.02851 <0.02851 <0.02851 <0.1426 <0.02851 <0.02851 -

0.07768 0.03441 <0.0342 0.1079 <0.0342 0.03896 <0.171 0.04127 0.1066 -

<0.02921 <0.02921 <0.02921 <0.02921 <0.02921 <0.02921 <0.1461 <0.02921 <0.02921 -

0.1619 0.08163 0.0274 0.1699 <0.02438 0.07681 <0.1219 0.04666 0.2219 -

<0.03405 <0.03405 <0.03405 <0.03405 <0.03405 <0.03405 <0.1702 <0.03405 <0.03405 -

<0.03134 <0.03134 <0.03134 <0.03134 <0.03134 <0.03134 <0.1567 <0.03134 <0.03134 -

1.413 0.7676 0.2539 1.841 <0.03338 0.6722 <0.1669 0.7622 2.256 -

<0.03937 <0.03937 <0.03937 <0.03937 <0.03937 <0.03937 <0.1969 <0.03937 <0.03937 -

<0.03496 <0.03496 <0.03496 <0.03496 <0.03496 <0.03496 <0.1748 <0.03496 <0.03496 -

<0.03244 <0.03244 <0.03244 <0.03244 <0.03244 <0.03244 <0.1622 <0.03244 <0.03244 -

44.33 29.82 4.016 76.46 2.713 18.74 2.6 46.73 75.8 -

Page 2 of 12 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria)

Chem_Group

ChemName

Units

TPH

C7 - C9 TPH C10 - C14 TPH+C10 - C36 (Sum of total) TPH C7-C36 TPH_C6-C9 ALIPHATIC TPH+C15 - C36 (Sum of total) 1,1,1,2-tetrachloroethane 1,1,1-trichloroethane 1,1,2,2-tetrachloroethane 1,1,2-trichloroethane 1,1-dichloroethane 1,1-dichloroethene 1,1-dichloropropene 1,2,3-trichlorobenzene 1,2,3-trichloropropane 1,2,4-trichlorobenzene 1,2,4-trimethylbenzene 1,2-dibromo-3-chloropropane 1,2-dibromoethane 1,2-dichlorobenzene 1,2-dichloroethane 1,2-Dichloroethene 1,2-dichloropropane 1,3,5-trimethylbenzene 1,3-dichlorobenzene 1,3-dichloropropane 1,3-Dichloropropene 1,4-dichlorobenzene 2-chlorotoluene 4-chlorotoluene 4-Methyl-2-pentanone Bromobenzene Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane Chloroform Chloromethane cis-1,3-dichloropropene Dibromomethane Dichlorodifluoromethane Dichloromethane Hexachlorobutadiene Isophorone Isopropylbenzene n-butylbenzene n-propylbenzene p-isopropyltoluene sec-butylbenzene Styrene tert-butylbenzene trans-1,2-dichloroethene trans-1,3-dichloropropene Trichlorofluoromethane

VOCs

Notes: ND -

Landfill Land Class A Class A Screen Leachate

Field_ID

BH102_1.1

Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

11/03/2012 10/03/2012 10/03/2012 26/03/2012 986810_5 986810_1 986810_2 992563_1 986810_2 986810_2 986810_2 992563_2 GRAVEL Gravelly Clayey Sandy SILT CLAY SAND

Landfill Class B Screen

BH103_0.5

BH103_1.2

26/03/2012 992563_2 992563_2 SILT

26/03/2012 992563_7 992563_2 SAND

5/03/2012 985965_6 985965_3 Silty SAND

5/03/2012 985965_8 985965_3 Silty CLAY

5/03/2012 985965_12 985965_3 Siltstone

6/03/2012 985965_13 985965_3 Sandy GRAVEL

<8.669 <20 <20 <68.67 <-0.1646 <40 -

<8.553 <20 <20 <68.55 <-0.1716 <40 -

<9.155 <20 <20 <69.16 <-1.839 <40 <0.3678 <0.3678 <1 <1 <0.4 <0.4 <0.3678 <0.3678 <1 <0.3678 <0.3678 <1 <1 <0.3678 <1 <0.7678 <1 <0.3678 <0.3678 <1 <2 <0.3678 <0.3678 <0.3678 <10 <0.3678 <0.3678 <1 <3 <6 <0.3678 <0.3678 <0.3678 <1 <0.3678 <1 <1 <1 <1 <10 <0.3678 <1.35 <0.3678 <0.3678 <0.3678 <0.3678 <0.3678 <0.3678 <0.3678 <0.4 <1 <0.4

<10.26 <20.52 <20.52 <71.83 <-0.1877 <41.05 -

<8.764 <20 <20 <68.76 <40 -

<8 <20 <20 <68 <-0.15 <40 -

6/03/2012 985965_15 985965_3 CLAY

6/03/2012 985965_17 985965_3 Silty CLAY

7/03/2012 985965_20 985965_3 SILT

7/03/2012 985965_23 985965_3 SILT

7/03/2012 985965_28 985965_3 CLAY

7/03/2012 985965_30 985965_3 SILT

7/03/2012 985965_31 985965_3 SILT

<9.401 <20 <20 <69.4 <40 -

<10.01 <20.03 <20.03 <70.09 <-0.185 <40.05 -

<11.81 <23.62 <23.62 <82.68 <47.25 -

<9.874 <20 <20 <69.87 <-0.181 <40 <1.496 <2.992 <2.992 <2.992 <2.992 <1.496 -

<10.49 <20.97 <20.97 <73.41 <41.95 -

<9.732 <20 <20 <69.73 <40 -

6/03/2012 985965_1 985965_3 Sandy GRAVEL

Landfill Class B Leachate

4000 1000 10000

200 50 500

400 100 1000

20 5 50

1000

100

800

0.2

0.4

0.02

0.2

0.4

0.02

200 20

10 1

20 2

1 0.1

1000

100

0.2

20 200

1 10

0.2 20

0.01 1

0.3

200

0.2

120

0.6

<8 <20 <20 <68 <-0.15 <40 -

<8.744 <20 <20 <68.74 <-0.1653 <40 -

<9.107 <20 <20 <69.11 <-0.1609 <40 <1.415 <2.83 <2.83 <2.83 <2.83 <1.415 -

<8 <20 <20 <68 <-0.15 <40 <0.1348 <0.2695 <0.2695 <0.2695 <0.2695 <0.1348 -

<10.21 <20.43 <20.43 <71.5 <40.86 -

<8.337 <20 <20 1024 <-0.15 1024 -

= Non Detect = no criteria available or not analysed

Page 3 of 12 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria) BH167_0.1-0.2 [TCLP] BH167_1.0-1.2 BH167_1.0-1.2 [TCLP] TP101_0.1

Field_ID

Sampled_Date-Time 6/03/2012 985965_41 SampleCode Lab_Report_Number 985965_3 Sandy GRAVEL Matrix_Description

Chem_Group

Asbestos 1. CAHs

BTEX

Inorganics

Metals

Organochlorine Pesticides

Other

ChemName

Units

Landfill Land Class A Class A Screen Leachate

Landfill Class B Screen

Landfill Class B Leachate

4 10 1000 2000

0.2 0.5 50 100

0.4 1 100 200

0.02 0.05 5 10

2000

100

200

100 400 20

5 20 1

10 40 2

0.5 2 0.1

100 100

5 5

10 10

0.5 0.5

4 200

0.2 10

0.4 20

0.02 1

200

0.00016

0.00008

0.000016

0.000008

500 8

1500

50 0.4

0.8

150

0.04

<0.021 0.006464 -

6/03/2012 985965_3 985965_3

<0.07962 <0.07962 <0.07962 <0.1592 <0.07962 <0.2389 4.98 7.66 4.93 19 0.1497 105.6 64.2 35.33 0.3227 140 115.2 -

6/03/2012 985965_42 985965_3 SILT

<0.021 -

TP101_0.1 [TCLP] TP101_0.5-0.6 TP102_0.1-0.2 TP102_0.5-0.7 TP103_0.1_0.2 TP103_0.9-1.2 TP104_ 0.2

10/03/2012 10/03/2012 986819_1 986819_5 986819_3 986819_3 Sandy SILT

10/03/2012 986819_2 986819_3 Gravelly Sandy SILT

0.0442 0.82 -

10/03/2012 986894_1 986894_2 Gravelly

10/03/2012 11/04/2012 986894_2 997729_1 986894_2 997729_2 Clayey SILT GRAVEL

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 2.738 <0.1 27.73 35.88 13.19 <0.1 58.08 82.08 -

11/04/2012 997729_3 997729_2 SILT

<0.07102 <0.07102 <0.07102 <0.142 <0.07102 <0.2131 <2 0.1354 102.1 40.14 6.179 0.1536 181.8 75.81 -

TP104_ 0.2 [TCLP] TP104_ 0.6-0.7 TP104_ 0.6-0.7[TCLP] TP104_ 1-1.1

10/03/2012 10/03/2012 986792_1 986792_9 986792_3 986792_3 -

ND <0.05373 <0.05373 <0.05373 <0.1075 <0.05373 4.97 7.11 4.93 9.656 <20 3.415 71.59 568.9 155.4 0.4882 141.8 508.5 -

0.005886 -

10/03/2012 986792_2 986792_3

ND <0.05 <0.05 <0.05 <0.1 <0.05 4.98 7.26 4.92 5.478 26.75 0.5243 81.46 156.2 208.3 1.056 147.2 359.7 -

10/03/2012 986792_10 986792_3 Silty GRAVEL

0.01082 -

10/03/2012 986792_3 986792_3 Silty GRAVEL

<2 <0.1 11.56 49.51 8.702 <0.1 42.96 48.27 -

Page 4 of 12 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria) BH167_0.1-0.2 [TCLP] BH167_1.0-1.2 BH167_1.0-1.2 [TCLP] TP101_0.1

Field_ID

Sampled_Date-Time 6/03/2012 985965_41 SampleCode Lab_Report_Number 985965_3 Sandy GRAVEL Matrix_Description

Chem_Group

ChemName

Asbestos PAH PAHs

PAHs (Sum of total) mg/kg Benzo[a]pyrene Toxic Equivalence (TEF) mg/kg

Phenols

Solvents SVOCs

Units

Landfill Land Class A Class A Screen Leachate

300

Landfill Class B Screen

Landfill Class B Leachate

200

800

2 0.1

0.1 0.05

0.2 0.01

0.01 0.005

0.1

0.05

0.01

0.005

0.2

0.4

0.02

2000 8000 6000

100 400 300

200 800 600

10 40 30

TP101_0.1 [TCLP] TP101_0.5-0.6 TP102_0.1-0.2 TP102_0.5-0.7 TP103_0.1_0.2 TP103_0.9-1.2 TP104_ 0.2

10/03/2012 10/03/2012 986819_1 986819_5 986819_3 986819_3 Sandy SILT

10/03/2012 986819_2 986819_3 Gravelly Sandy SILT

6/03/2012 985965_42 985965_3 SILT

0.1243 0.0001299

8.127 1.224

12.14 1.641

5.738 0.7668

2.721 0.4054

0.9184 0.1031

1.745 0.2411

<0.6977 <0.002

9.622

47.54

<0.00005

0.2818

0.005421 0.01305 0.006133 0.0003736 <0.0001 <0.0001 <0.0001 -

<0.03985 0.1124 0.08984 0.5134 0.8404 1.055 0.394 -

<0.7195 <0.7195 <0.0326 0.09369 0.2647 0.9204 1.115 0.9081 0.5254 <1.439

<0.6271 <0.6271 <0.02577 0.07825 0.07778 0.3614 0.5077 0.5222 0.2587 <1.254

<0.6092 <0.6092 <0.0237 0.02574 0.02752 0.1908 0.2872 0.2602 0.1388 <1.218

<0.8328 <0.8328 <0.03745 <0.03745 <0.03745 0.04944 0.0783 0.098 <0.03745 <1.666

<0.02241 <0.02241 <0.02241 0.1197 0.1378 0.1828 0.1308 -

<0.03489 <0.03489 <0.03489 <0.03489 <0.03489 <0.03489 <0.03489 -

0.174 0.9391 1.324 5.861 6.493 6.086 3.204 -

0.7176 3.196 9.425 29.15 33.82 26.74 13.33 -

<0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 -

<0.0267 0.04437 0.04239 0.1551 0.1866 0.189 0.09222 -

0.0001037 0.0003498 <0.0001 0.00965 0.01398 <0.0001 0.02334 0.04367 0.008018 -

0.9554 0.4746 0.1164 1.101 <0.03985 0.65 <0.1992 0.2984 1.386 -

0.2889 0.1456 0.03458 0.1977 <0.02241 0.1133 <0.1121 0.07342 0.2193 -

<0.03489 <0.03489 <0.03489 <0.03489 <0.03489 <0.03489 <0.1744 <0.03489 <0.03489 -

7.091 4.903 0.8607 15.12 0.2807 4.52 0.3801 7.509 15.58 <0.2 -

30.63 23.43 3.58 83.14 1.952 17.61 0.7162 63.65 77.69 <0.2 -

<0.0001 <0.0001 <0.0001 <0.0001 <0.0002 <0.0001 <0.0005 <0.0004 <0.0002 -

0.2727 0.1362 <0.0267 0.4143 <0.0267 0.1306 <0.1335 0.203 0.4316 -

10/03/2012 986894_1 986894_2 Gravelly

10/03/2012 11/04/2012 986894_2 997729_1 986894_2 997729_2 Clayey SILT GRAVEL

11/04/2012 997729_3 997729_2 SILT

TP104_ 0.2 [TCLP] TP104_ 0.6-0.7 TP104_ 0.6-0.7[TCLP] TP104_ 1-1.1

6/03/2012 985965_3 985965_3

10/03/2012 10/03/2012 986792_1 986792_9 986792_3 986792_3 -

10/03/2012 986792_2 986792_3

10/03/2012 986792_10 986792_3 Silty GRAVEL

10/03/2012 986792_3 986792_3 Silty GRAVEL

Page 5 of 12 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria) BH167_0.1-0.2 [TCLP] BH167_1.0-1.2 BH167_1.0-1.2 [TCLP] TP101_0.1

Field_ID

Sampled_Date-Time 6/03/2012 985965_41 SampleCode Lab_Report_Number 985965_3 Sandy GRAVEL Matrix_Description

Chem_Group

ChemName

Units

Asbestos TPH

-mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

VOCs

Notes: ND -

Landfill Land Class A Class A Screen Leachate

Landfill Class B Screen

Landfill Class B Leachate

4000 1000 10000

200 50 500

400 100 1000

20 5 50

1000

100

800

0.2

0.4

0.02

0.2

0.4

0.02

200 20

10 1

20 2

1 0.1

1000

100

0.2

20 200

1 10

0.2 20

0.01 1

0.3

200

0.2

120

0.6

6/03/2012 985965_3 985965_3

<11.95 <23.91 <23.91 <83.68 <-0.2389 <47.82 -

6/03/2012 985965_42 985965_3 SILT

TP101_0.1 [TCLP] TP101_0.5-0.6 TP102_0.1-0.2 TP102_0.5-0.7 TP103_0.1_0.2 TP103_0.9-1.2 TP104_ 0.2

10/03/2012 10/03/2012 986819_1 986819_5 986819_3 986819_3 Sandy SILT

<9.78 <20 <20 <69.78 <-0.1689 <40 <1.439 <2.878 <2.878 <2.878 <2.878 <1.439 -

10/03/2012 986819_2 986819_3 Gravelly Sandy SILT

<8 <20 <20 <68 <-0.15 <40 <1.254 <2.508 <2.508 <2.508 <2.508 <1.254 -

10/03/2012 986894_1 986894_2 Gravelly

<8 <20 <20 <68 <-1.59 <40 <0.3181 <0.3181 <1 <1 <0.4 <0.4 <0.3181 <0.3181 <1 <0.3181 <0.3181 <1 <1 <0.3181 <1 <0.7181 <1 <0.3181 <0.3181 <1 <2 <0.3181 <0.3181 <0.3181 <10 <0.3181 <0.3181 <1 <3 <6 <0.3181 <0.3181 <0.3181 <1 <0.3181 <1 <1 <1 <1 <10 <0.3181 <1.218 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.4 <1 <0.4

10/03/2012 11/04/2012 986894_2 997729_1 986894_2 997729_2 Clayey SILT GRAVEL

<11.24 <22.47 <22.47 <78.65 <-2.648 <44.94 <0.5296 <0.5296 <1 <1 <0.5296 <0.5296 <0.5296 <0.5296 <1 <0.5296 <0.5296 <1 <1 <0.5296 <1 <1.059 <1 <0.5296 <0.5296 <1 <2 <0.5296 <0.5296 <0.5296 <10 <0.5296 <0.5296 <1 <3 <6 <0.5296 <0.5296 <0.5296 <1 <0.5296 <1 <1 <1 <1 <10.59 <0.5296 <1.666 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <1 <0.5296

<8 <20 <20 2233 <-0.15 2233 -

11/04/2012 997729_3 997729_2 SILT

<10.47 <20.93 <20.93 <73.26 <-0.2131 <41.86 -

TP104_ 0.2 [TCLP] TP104_ 0.6-0.7 TP104_ 0.6-0.7[TCLP] TP104_ 1-1.1

10/03/2012 10/03/2012 986792_1 986792_9 986792_3 986792_3 -

<8.96 <20 209.3 209.3 -

10/03/2012 986792_2 986792_3

<8 <20 1126 1126 -

10/03/2012 986792_10 986792_3 Silty GRAVEL

10/03/2012 986792_3 986792_3 Silty GRAVEL

<8.009 <20 <68.01 <40 -

= Non Detect = no criteria available or not analysed

Page 6 of 12 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria)

Chem_Group

Asbestos 1. CAHs

BTEX

Inorganics

Metals

Organochlorine Pesticides

Other

ChemName

Units

Landfill Land Class A Class A Screen Leachate

Field_ID

TP105_.2

TP105_.5

TP105_1-1.1 TP106_0.1-0.2 TP106_1.3-1.4 TP107_0.3

Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

11/03/2012 986803_1 986803_2 Cobbles and Gravel

11/03/2012 986803_2 986803_2 Gravelly SAND

11/03/2012 986803_3 986803_2 Gravelly SAND

Landfill Class B Screen

Landfill Class B Leachate

4 10 1000 2000

0.2 0.5 50 100

0.4 1 100 200

0.02 0.05 5 10

2000

100

200

100 400 20

5 20 1

10 40 2

0.5 2 0.1

100 100

5 5

10 10

0.5 0.5

4 200

0.2 10

0.4 20

0.02 1

200

0.00016

0.00008

0.000016

0.000008

500 8

1500

50 0.4

0.8

150

0.04

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 6.902 <20 0.2707 30.8 66.39 105 <0.1 110.2 87.24 -

2.552 0.1147 20.76 37.46 25.08 <0.1 91.53 57.25 -

8/03/2012 985965_35 985965_3 Gravelly SAND

ND 3.42 0.2346 45.26 52.55 78.64 <0.1 155.1 114.4 -

8/03/2012 985965_36 985965_3 CLAY

<2 <0.1 28.68 7.598 6.624 <0.1 10.69 45.92 -

TP107_0.3 [TCLP] TP107_0.9-1.0 TP107_0.9-1.0 [TCLP] TP107_2.5

10/03/2012 10/03/2012 10/03/2012 10/03/2012 986872_1 986872_8 986872_3 986872_9 986872_3 986872_3 986872_3 986872_3 Sandy GRAVEL Sandy Sandy GRAVEL GRAVEL

<0.05 <0.05 <0.05 <0.1 <0.05 4.99 7.2 4.92 30.14 <20 0.2861 52.94 97.29 94.93 0.104 92.52 174.1 -

<0.021 -

4.93 7.45 4.93 308.8 144.4 0.1496 82.18 162.7 53.28 <0.1 45.25 100.7 -

0.138 <0.011 -

TP108_0.2

TP108_0.2 [TCLP] TP108_1.1-1.2 TP108_2.0-2.1 TP109_0.2

10/03/2012 11/03/2012 11/03/2012 986872_6 986880_1 986880_8 986872_3 986880_3 986880_3 Sandy SILT Gravelly SAND

4.706 <20 0.1246 83.13 50.49 32.14 <0.1 53.48 100.1 -

<0.021 0.01341 0.02206 0.000131 1.359 -

TP109_0.2 [TCLP] TP109_1-1.1

11/03/2012 11/03/2012 11/03/2012 11/03/2012 986880_3 986880_5 986814_1 986814_5 986880_3 986880_3 986814_3 986814_3 Sandy SILT Clayey SILT Cobbles, gravel, sand and silt

<0.05 <0.05 <0.05 <0.1 <0.05 4.37 <20 <0.1 68.78 20.12 12.57 0.1366 18.16 53.05 <1.45 <1.45 <1.45 <1.45 <1.45 <1.45 <2.899 <1.45 <2.899 <2.899 <2.899 <2.899 <2.899 <1.45 <1.45 <1.45 <1.45 <1.45 -

<2 <0.1 94.02 37.28 9.002 0.1362 35.97 36.82 -

ND <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 5.19 8.87 4.93 8.015 0.2189 40.89 54.02 288.9 0.1968 88.06 212.7 -

0.02272 0.1917 -

11/03/2012 986814_3 986814_3 Gravelly Sandy SILT

5.26 8.84 4.93 4.004 0.2929 51.49 65.62 131.8 0.2462 132.1 187.6 -

TP109_1-1.1 [TCLP]

11/03/2012 986814_6 986814_3

0.003379 -

Page 7 of 12 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria)

Chem_Group

ChemName

Asbestos PAH PAHs

PAHs (Sum of total) mg/kg Benzo[a]pyrene Toxic Equivalence (TEF) mg/kg

Phenols

Solvents SVOCs

Units

Landfill Land Class A Class A Screen Leachate

300

Field_ID

TP105_.2

TP105_.5

TP105_1-1.1 TP106_0.1-0.2 TP106_1.3-1.4 TP107_0.3

Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

11/03/2012 986803_1 986803_2 Cobbles and Gravel

11/03/2012 986803_2 986803_2 Gravelly SAND

11/03/2012 986803_3 986803_2 Gravelly SAND

Landfill Class B Screen

Landfill Class B Leachate

200

800

2 0.1

0.1 0.05

0.2 0.01

0.01 0.005

0.1

0.05

0.01

0.005

0.2

0.4

0.02

2000 8000 6000

100 400 300

200 800 600

10 40 30

8/03/2012 985965_35 985965_3 Gravelly SAND

8/03/2012 985965_36 985965_3 CLAY

TP107_0.3 [TCLP] TP107_0.9-1.0 TP107_0.9-1.0 [TCLP] TP107_2.5

10/03/2012 10/03/2012 10/03/2012 10/03/2012 986872_1 986872_8 986872_3 986872_9 986872_3 986872_3 986872_3 986872_3 Sandy Sandy GRAVEL Sandy GRAVEL GRAVEL

TP108_0.2

TP108_0.2 [TCLP] TP108_1.1-1.2 TP108_2.0-2.1 TP109_0.2

10/03/2012 11/03/2012 11/03/2012 986872_6 986880_1 986880_8 986872_3 986880_3 986880_3 Gravelly Sandy SILT SAND

TP109_0.2 [TCLP] TP109_1-1.1

11/03/2012 11/03/2012 11/03/2012 11/03/2012 986880_3 986880_5 986814_1 986814_5 986880_3 986880_3 986814_3 986814_3 Sandy SILT Clayey SILT Cobbles, gravel, sand and silt

11/03/2012 986814_3 986814_3 Gravelly Sandy SILT

TP109_1-1.1 [TCLP]

11/03/2012 986814_6 986814_3

5.753 0.7596

<13.13 <0.002

1.124 0.1215

2.061 0.3144

<0.6615 <0.002

0.2311

<0.00005

0.1179

0.1322

7.098

<0.002

9.086 1.426

36.09 5.412

<0.02623 0.08905 0.102 0.3665 0.5049 0.462 0.2678 -

<0.6567 <0.6567 <0.6567 <0.6567 <0.6567 <0.6567 <1.313 <1.313 <1.313 <1.313

<0.02502 0.02579 <0.02502 0.06545 0.08799 0.09713 0.04513 -

<0.02819 <0.02819 <0.02819 0.1377 0.2026 0.1832 0.1012 -

<0.03307 <0.03307 <0.03307 <0.03307 <0.03307 <0.03307 <0.03307 -

<0.02666 <0.02666 <0.02666 0.07596 0.1262 0.1399 0.08539 -

<0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001

<0.03189 <0.03189 <0.03189 0.03539 0.05903 0.06379 0.03977 -

<0.04011 <0.04011 <0.04011 <0.04011 0.06576 0.07407 0.05162 -

<0.6667 <0.6667 0.1088 0.3042 0.5062 3.686 4.653 4.02 2.302 3.794

<0.7248 <0.7248 <0.03021 <0.03021 <0.03021 <0.03021 <0.03021 <0.03021 <0.03021 <1.45

<0.03519 <0.03519 <0.03519 <0.03519 <0.03519 <0.03519 <0.03519 -

<0.02856 0.08522 0.07236 0.644 0.9366 0.8031 0.4686 -

0.03737 0.3366 0.3326 2.709 3.513 2.955 1.778 -

0.7798 0.3471 0.06702 0.8845 <0.02623 0.3394 0.1465 0.4737 0.8964 -

0.1335 0.06133 <0.02502 0.1667 <0.02502 0.06795 <0.1251 0.08262 0.1782 -

0.2474 0.1401 0.04765 0.2808 <0.02819 0.1128 <0.1409 0.1325 0.348 -

<0.03307 <0.03307 <0.03307 <0.03307 <0.03307 <0.03307 <0.1654 <0.03307 <0.03307 -

0.2223 0.1059 0.05218 0.1745 <0.02666 0.1158 <0.1333 0.09058 0.1975 -

<0.0001 <0.0001 <0.0001 <0.0002 <0.0001 <0.0005 <0.0004 <0.0002 -

0.07662 0.05744 0.03807 0.03763 <0.03189 0.04641 <0.1594 0.09449 0.05006 -

0.07553 <0.04011 0.04392 <0.04011 <0.04011 0.05931 <0.2006 <0.04011 0.04455 -

<0.03519 <0.03519 <0.03519 <0.03519 <0.03519 <0.03519 <0.176 <0.03519 <0.03519 -

1.118 0.6755 0.1778 1.365 <0.02856 0.6805 <0.1428 0.4102 1.549 -

4.212 2.517 0.6408 5.8 0.06077 3.048 <0.1452 1.76 6.319 -

Page 8 of 12 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria)

Chem_Group

ChemName

Units

Asbestos TPH

VOCs

Notes: ND -

Landfill Land Class A Class A Screen Leachate

Field_ID

TP105_.2

TP105_.5

TP105_1-1.1 TP106_0.1-0.2 TP106_1.3-1.4 TP107_0.3

Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

11/03/2012 986803_1 986803_2 Cobbles and Gravel

11/03/2012 986803_2 986803_2 Gravelly SAND

11/03/2012 986803_3 986803_2 Gravelly SAND

Landfill Class B Screen

Landfill Class B Leachate

4000 1000 10000

200 50 500

400 100 1000

20 5 50

1000

100

800

0.2

0.4

0.02

0.2

0.4

0.02

200 20

10 1

20 2

1 0.1

1000

100

0.2

20 200

1 10

0.2 20

0.01 1

0.3

200

0.2

120

0.6

<8 <20 <20 132.3 <-0.15 132.3 -

<8.164 <20 <20 <68.16 <-0.15 <40 <1.313 <2.627 <2.627 <2.627 <2.627 <1.313 -

<8 <20 <20 <68 <40 -

8/03/2012 985965_35 985965_3 Gravelly SAND

8/03/2012 985965_36 985965_3 CLAY

<8.457 <20 <20 <68.46 <40 -

<9.922 <20 <20 <69.92 <40 -

TP107_0.3 [TCLP] TP107_0.9-1.0 TP107_0.9-1.0 [TCLP] TP107_2.5

10/03/2012 10/03/2012 10/03/2012 10/03/2012 986872_1 986872_8 986872_3 986872_9 986872_3 986872_3 986872_3 986872_3 Sandy Sandy GRAVEL Sandy GRAVEL GRAVEL

<8 <20 <68 <40 -

<9.567 <20 <69.57 <40 -

TP108_0.2

TP108_0.2 [TCLP] TP108_1.1-1.2 TP108_2.0-2.1 TP109_0.2

10/03/2012 11/03/2012 11/03/2012 986872_6 986880_1 986880_8 986872_3 986880_3 986880_3 Gravelly Sandy SILT SAND

<12.03 <24.07 <84.24 <48.14 -

<8.788 <20 99.5 99.5 <1.333 <2.667 <2.667 <2.667 <2.667 <1.333 -

TP109_0.2 [TCLP] TP109_1-1.1

11/03/2012 11/03/2012 11/03/2012 11/03/2012 986880_3 986880_5 986814_1 986814_5 986880_3 986880_3 986814_3 986814_3 Sandy SILT Clayey SILT Cobbles, gravel, sand and silt

<9.063 <20 <69.06 <40 <1.45 <2.899 <2.899 <2.899 <2.899 <1.45 -

<10.56 <21.11 <73.9 <42.23 -

<8.568 <20 <20 <68.57 <-0.15 <40 -

11/03/2012 986814_3 986814_3 Gravelly Sandy SILT

<8.713 <20 <20 <68.71 51.04 -

TP109_1-1.1 [TCLP]

11/03/2012 986814_6 986814_3

= Non Detect = no criteria available or not analysed

Page 9 of 12 Print Date: 14/12/2012

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria)

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Field_ID

Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group

Asbestos 1. CAHs

BTEX

Inorganics

Metals

Organochlorine Pesticides

Other

ChemName

Units

Landfill Land Class A Class A Screen Leachate

Landfill Class B Screen

Landfill Class B Leachate

4 10 1000 2000

0.2 0.5 50 100

0.4 1 100 200

0.02 0.05 5 10

2000

100

200

100 400 20

5 20 1

10 40 2

0.5 2 0.1

100 100

5 5

10 10

0.5 0.5

4 200

0.2 10

0.4 20

0.02 1

200

0.00016

0.00008

500 8

1500

0.000016

0.000008

50 0.4

0.8

150

0.04

Statistical Summary Number of Results

Number of Minimum Detects Concentration

Minimum Detect

Maximum Concentration

Maximum Average Detect Concentration

Median Concentration

Standard Number of Deviation Guideline Exceedances

Number of Guideline Exceedances (Detects Only)

3 3 3 3 27 27 27 27 27 22 0 10 10 0 10 46 11 42 0 41 44 46 0 39 41 2 2 46 1 12 12 12 10 12 1 1 1 12 12 12 10 12 12 12 12 12 1 12 12 12 12 12 1 1 1 11 3

0 0 0 0 0 0 0 0 0 0 0 10 10 0 10 29 2 21 0 41 43 46 0 15 40 2 2 46 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ND ND ND ND ND ND ND ND ND ND ND 4.92 7.11 ND 4.92 0.138 26.75 0.005886 ND 6.311 0.01341 0.006464 ND 0.000131 9.803 ND ND 0.1917 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

<0.5296 <0.5296 <1 <1 <0.5296 <0.5296 <1.059 <0.5296 <0.5296 <1.059 0 5.26 8.87 0 4.93 308.8 144.4 3.415 0 114.5 568.9 311.5 0 4.772 264.7 0 0 878.1 <0.01017 <1.666 <1.666 <1.666 <3.331 <1.666 <0.04 <0.01017 <0.01017 <1.666 <1.666 <3.331 <6.662 <1.666 <3.331 <3.331 <3.331 <3.331 <0.01017 <3.331 <1.666 <1.666 <1.666 <1.666 <0.01017 <0.01017 <0.01017 <1.666 <5.296

ND ND ND ND ND ND ND ND ND ND ND 5.26 8.87 ND 4.93 308.8 144.4 3.415 ND 114.5 568.9 311.5 ND 4.772 264.7 ND ND 878.1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

0.2 0.2 0.5 0.5 0.047 0.047 0.069 0.071 0.047 0.13

0.1839 0.1839 0.5 0.5 0.02682 0.02682 0.02682 0.05365 0.02682 0.082475

0.055 0.055 0 0 0.058 0.058 0.12 0.05 0.058 0.12

5 7.8

4.98 7.555

0.12 0.7

4.9 12 24 0.21

4.93 3.3145 10 0.05

0.0042 45 40 0.52

47 59 51

41.72 40.14 13.64

30 88 76

0.24 74

0.05 58.08

0.77 60

117

79.12 0.005085 0.67075 0.67075 0.67075 1.33175 0.67075 0.02 0.005085 0.005085 0.67075 0.67075 1.34175 2.66325 0.67075 1.34175 1.34175 1.34175 1.34175 0.005085 1.34175 0.67075 0.67075 0.67075 0.67075 0.005085 0.005085 0.005085 0.675 1.839

155

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 28 2 20 0 0 41 41 0 14 40 0 0 42 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

<0.3181 <0.3181 <1 <1 <0.05 <0.05 <0.05 <0.1 <0.05 <0.15 0 4.92 7.11 0 4.92 <0.021 <20 0.005886 0 6.311 <0.011 0.006464 0 0.000131 <2 0 0 0.1917 <0.01017 <0.01017 <0.01017 <0.01017 <0.02034 <0.01017 <0.04 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.0305 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.01017 <0.2 <3.181

0.59 0.59 0.59 1.1 0.59

0.59 0.59 1.2 2.3 0.59 1.2 1.2 1.2 1.2 1.2 0.59 0.59 0.59 0.59

0.64 2

0.26 0.26 0.26 0.57 0.26

0.26 0.26 0.53 1.1 0.26 0.53 0.51 0.53 0.53 0.53 0.26 0.26 0.26 0.26

0.19 0.55

0 0 0 3 14 0 0 0 0 0 0 0 0 0 0 41 11 20 0 0 41 41 0 38 41 0 0 42 0 0 0 12 0 0 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Page 10 of 12 Print Date: 14/12/2012

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria)

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Field_ID

Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group

ChemName

Asbestos PAH PAHs

PAHs (Sum of total) mg/kg Benzo[a]pyrene Toxic Equivalence (TEF) mg/kg

Phenols

Solvents SVOCs

Units

Landfill Land Class A Class A Screen Leachate

300

200

Landfill Class B Screen

Landfill Class B Leachate

800

2 0.1

0.1 0.05

0.2 0.01

0.01 0.005

0.1

0.05

0.01

0.005

0.2

0.4

0.02

2000 8000 6000

100 400 300

200 800 600

10 40 30

Statistical Summary Number of Results

Number of Minimum Detects Concentration

Minimum Detect

33 45

21 33

0.1243 <0.00005

13 13 44 44 44 44 44 44 44 12

2 2 7 18 17 27 27 27 25 2

42 44 44 44 44 44 45 45 45 11 11 11 11 0 11 0 11 5 3 3 3 11 11 11 11 11 11 3 11 11 11 0 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11

29 27 22 27 7 27 7 28 29 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Maximum Average Detect Concentration

Median Concentration

Standard Number of Deviation Guideline Exceedances

Number of Guideline Exceedances (Detects Only)

0.1243 437.8 0.0001299 50.46

437.8 50.46

18 3.1

1.34 0.13575

76 10

0 2

<0.1 <0.1 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001

ND ND 0.005421 0.01305 0.006133 0.0003736 0.05903 0.05628 0.03977 2.619

<0.8328 <0.8328 0.8515 5.592 12.21 38.82 33.82 28.06 17.64 3.794

ND ND 0.8515 5.592 12.21 38.82 33.82 28.06 17.64 3.794

0.32 0.32 0.065 0.27 0.59 2 2.1 1.8 1 1

0.3375 0.3375 0.0160825 0.01816 0.0175375 0.075435 0.108205 0.11965 0.06677 0.7135

0.095 0.095 0.17 0.96 2.3 7.2 7.1 5.8 3.3 1.1

0 0 0 0 0 0 2 0 0 0

<0.0001 <0.0001 <0.0001 <0.0001 <0.0002 <0.0001 <0.0005 <0.0004 <0.0002 <0.2 <0.2 <0.4 <0.4 0 <0.5 0 <0.2695 <0.2 <31.81 <3.181 <0.3181 <0.2695 <0.2695 <0.2 <0.2695 <0.2695 <0.2 <6 <0.6739 <0.1348 <0.1348 0 <1.348 <0.1348 <0.1348 <0.1348 <0.5391 <0.2695 <0.1348 <0.1348 <0.2695 <0.2695 <0.2695 <0.2695 <0.6739 <0.2695 <0.1348 <0.2695 <0.2695 <6

0.0001037 0.0003498 0.0274 0.00965 0.01398 0.03896 0.02334 0.03264 0.008018 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

44.33 29.82 4.016 83.14 2.713 18.74 2.6 63.65 77.69 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

2.6 1.6 0.29 4.7 0.14 1.3 0.16 3 4.7 0.64 0.64 2.3 1.3

0.1619 0.077535 0.03258 0.1722 0.0160825 0.075235 0.077325 0.07802 0.2084 0.675 0.675 2.5 1.35

8.3 5.6 0.8 17 0.5 3.9 0.39 12 16 0.19 0.19 0.69 0.38

2.3

2.5

0.68

1.3 0.1 20 2 0.2 1.3 1.3 0.64 1.3 1.3 0.64 3 3.2 0.64 0.64

1.35 0.1 18.39 1.839 0.1839 1.35 1.35 0.675 1.35 1.35 0.675 3 3.375 0.675 0.675

0.4 0 5.5 0.55 0.055 0.4 0.4 0.19 0.4 0.4 0.19 0 1 0.2 0.2

6.4 0.64 0.64 0.64 2.6 1.3 0.64 0.64 1.3 1.3 1.3 1.3 3.2 1.3 0.64 1.3 1.3 14

6.75 0.675 0.675 0.675 2.7 1.35 0.675 0.675 1.35 1.35 1.35 1.35 3.375 1.35 0.675 1.35 1.35 15

2 0.2 0.2 0.2 0.8 0.4 0.2 0.2 0.4 0.4 0.4 0.4 1 0.4 0.2 0.4 0.4 3.7

0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 11 0 0 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Maximum Concentration

Page 11 of 12 Print Date: 14/12/2012

Table T3 - AECOM Soil Waste Classification (2012 - Comparison to MfE Cleanfills Criteria)

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Field_ID

Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

Chem_Group

ChemName

Units

Asbestos TPH

VOCs

Notes: ND -

Landfill Land Class A Class A Screen Leachate

Landfill Class B Screen

Landfill Class B Leachate

4000 1000 10000

200 50 500

400 100 1000

20 5 50

1000

100

800

0.2

0.4

0.02

0.2

0.4

0.02

200 20

10 1

20 2

1 0.1

1000

100

0.2

20 200

1 10

0.2 20

0.01 1

0.3

200

0.2

120

0.6

Statistical Summary Number of Results

Number of Minimum Detects Concentration

Minimum Detect

Maximum Concentration

Maximum Average Detect Concentration

Median Concentration

Standard Number of Deviation Guideline Exceedances

Number of Guideline Exceedances (Detects Only)

43 43 34 43 24 43 3 3 3 3 3 3 3 3 3 11 3 3 3 11 3 3 3 3 11 3 3 11 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 11 11 3 3 3 3 3 3 3 3 3 3

2 2 2 8 24 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

ND ND ND 99.5 ND 51.04 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

<12.03 <24.07 <23.91 2233 0 2233 <0.5296 <0.5296 <1 <1 <0.5296 <0.5296 <0.5296 <0.5296 <1 <1.496 <0.5296 <1 <1 <2.992 <1 <1.059 <1 <0.5296 <2.992 <1 <2 <2.992 <0.5296 <0.5296 <10 <0.5296 <0.5296 <1 <3 <6 <0.5296 <0.5296 <0.5296 <1 <0.5296 <1 <1 <1 <1 <10.59 <2.992 <1.666 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <0.5296 <1 <0.5296

ND ND ND 2233 ND 2233 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

4.6 10 10 148

4.394 10 10 34.785

0.59 0.54 0.5 404

136 0.2 0.2 0.5 0.5 0.22 0.22 0.2 0.2 0.5 0.5 0.2 0.5 0.5 0.95 0.5 0.42 0.5 0.2 0.95 0.5 1 0.95 0.2 0.2 5 0.2 0.2 0.5 1.5 3 0.2 0.2 0.2 0.5 0.2 0.5 0.5 0.5 0.5 5.1 0.95 0.64 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.22 0.5 0.22

20 0.1839 0.1839 0.5 0.5 0.2 0.2 0.1839 0.1839 0.5 0.6565 0.1839 0.5 0.5 1.3135 0.5 0.3839 0.5 0.1839 1.3135 0.5 1 1.3135 0.1839 0.1839 5 0.1839 0.1839 0.5 1.5 3 0.1839 0.1839 0.1839 0.5 0.1839 0.5 0.5 0.5 0.5 5 1.3135 0.675 0.1839 0.1839 0.1839 0.1839 0.1839 0.1839 0.1839 0.2 0.5 0.2

407 0.055 0.055 0 0 0.037 0.037 0.055 0.055 0 0.27 0.055 0 0 0.61 0 0.092 0 0.055 0.61 0 0 0.61 0.055 0.055 0 0.055 0.055 0 0 0 0.055 0.055 0.055 0 0.055 0 0 0 0 0.17 0.61 0.2 0.055 0.055 0.055 0.055 0.055 0.055 0.055 0.037 0 0.037

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

<8 <20 <20 <68 0 <40 <0.3181 <0.3181 <1 <1 <0.4 <0.4 <0.3181 <0.3181 <1 <0.1348 <0.3181 <1 <1 <0.2695 <1 <0.7181 <1 <0.3181 <0.2695 <1 <2 <0.2695 <0.3181 <0.3181 <10 <0.3181 <0.3181 <1 <3 <6 <0.3181 <0.3181 <0.3181 <1 <0.3181 <1 <1 <1 <1 <10 <0.2695 <0.1348 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.3181 <0.4 <1 <0.4

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 11 0 1 3 0 0 0 3 0 0 0 0 0 3 0 0 3 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0

= Non Detect = no criteria available or not analysed

Page 12 of 12 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T4 - 2010 Soil Sampling Results Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description Chem_Group

ChemName

Units

Asbestos 1. CAHs

Asbestos cis-1,2-dichloroethene Trichloroethene Tetrachloroethene Vinyl chloride Benzene Ethylbenzene Toluene Xylene (m & p) Xylene (o) Total Xylene (ESDAT) Chloride pH (Final) pH (Initial) Sulphate pH of Leaching Fluid Arsenic Boron Cadmium Calcium Chromium Copper Lead Magnesium Mercury Nickel Potassium Sodium Zinc 2,4-DDT 4,4-DDE a-BHC Aldrin Aldrin + Dieldrin b-BHC chlordane cis-Chlordane trans-chlordane d-BHC DDD DDT DDT+DDE+DDD Dieldrin Endosulfan I Endosulfan II Endosulfan sulphate Endrin Endrin aldehyde Endrin ketone g-BHC (Lindane) Heptachlor Heptachlor epoxide Hexachlorobenzene Methoxychlor o,p-DDD o,p''''-DDE Di(2-ethylhexyl)adipate Freon 113

BTEX

Inorganics

Metals

Organochlorine Pesticides

Other

Auckland ALWP Background

MB5 (a) 0.4-1.5 7/01/2010 756530_3 756530_1 Clayey SILT

MB1a 0.45-1.0 7/01/2010 756530_1 756530_1 Gravelly CLAY

MB1a 1.1-1.5 7/01/2010 756530_2 756530_1 Sandy SILT

MB3c 0.5-1.1 7/01/2010 756530_6 756530_1

MB4b 1.0-1.5 7/01/2010 756530_9 756530_1

MB6c 0.3-0.8 7/01/2010 756530_7 756530_1 SILT

MB7a 2.0-2.5 7/01/2010 756530_8 756530_1 Silty CLAY

AKL Council MfE Sheep NES 2011 MfE Sch 10 Disch Gasworks Dip 2006- COMM / IND IND 1997-IND

8 600

500

0.4-12 2-260 0.1-0.65

100 7.5

70 10000 1300

10-170 20-90 1.5-65

400 325 250

10000 3300

0.03-0.45 4-320

105

54-1160

400

500

4200

1000 1700 190

14000

160

18.55 1066 <2 <0.1 381.3 84.09 42.81 7.427 3274 <0.1 70.1 538.6 166.3 71.92 <1.729 <1.729 <1.729 <3.458 <1.729 <1.729 <1.729 <3.458 <6.916 <1.729 <3.458 <3.458 <3.458 <3.458 <3.458 <1.729 <1.729 <1.729 <1.729 <1.729 -

60.3 16.83 18.36 0.142 5809 17.46 25.45 218.1 4996 0.3984 28.85 848.4 1315 143 <1.385 <1.385 <1.385 <2.771 <1.385 <1.385 <1.385 <2.771 <5.541 <1.385 <2.771 <2.771 <2.771 <2.771 <2.771 <1.385 <1.385 <1.385 <1.385 <1.385 -

57.75 26.48 16.61 0.1002 4146 18.38 26.96 93.08 5576 <0.1 34.24 1103 1194 88.75 <1.411 <1.411 <1.411 <2.822 <1.411 <1.411 <1.411 <2.822 <5.643 <1.411 <2.822 <2.822 <2.822 <2.822 <2.822 <1.411 <1.411 <1.411 <1.411 <1.411 -

Table T4 - 2010 Soil Revision 4 25 July 2012 I:\AEEP\60275817 AEEP ACT001 CRL Contaminated Land Assessment\8. Issued Docs\8.1 Reports\CLA Report 10Dec12\Appendix A Tables, Figures\updated tables\T4-60222458 2010 Soils-20120814.xlsm

23.4 199.8 <2 <0.1 944.2 8.374 2.034 4.104 638.5 <0.1 2.476 661.3 171.3 <4 <1.431 <1.431 <1.431 <2.863 <1.431 <1.431 <1.431 <2.863 <5.726 <1.431 <2.863 <2.863 <2.863 <2.863 <2.863 <1.431 <1.431 <1.431 <1.431 <1.431 -

14.1 800 2.02 <0.1 1359 94.36 44.92 11.5 5216 <0.1 71.63 705.5 972.7 52.07 <1.71 <1.71 <1.71 <3.421 <1.71 <1.71 <1.71 <3.421 <6.842 <1.71 <3.421 <3.421 <3.421 <3.421 <3.421 <1.71 <1.71 <1.71 <1.71 <1.71 -

10.25 613.9 2.699 <0.1 2339 88.39 41.87 9.948 2201 <0.1 47.56 490.8 187.4 37.02 <1.689 <1.689 <1.689 <3.377 <1.689 <1.689 <1.689 <3.377 <6.755 <1.689 <3.377 <3.377 <3.377 <3.377 <3.377 <1.689 <1.689 <1.689 <1.689 <1.689 -

11.55 37.95 <2 0.1115 1131 16.36 5.746 7.04 2445 0.4217 39.97 530.1 794.4 45.69 <1.39 <1.39 <1.39 <2.78 <1.39 <1.39 <1.39 <2.78 <5.56 <1.39 <2.78 <2.78 <2.78 <2.78 <2.78 <1.39 <1.39 <1.39 <1.39 <1.39 -

Page 1 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T4 - 2010 Soil Sampling Results Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description

MB1a 0.45-1.0 7/01/2010 756530_1 756530_1 Gravelly CLAY

MB1a 1.1-1.5 7/01/2010 756530_2 756530_1 Sandy SILT

MB3c 0.5-1.1 7/01/2010 756530_6 756530_1

MB4b 1.0-1.5 7/01/2010 756530_9 756530_1

MB6c 0.3-0.8 7/01/2010 756530_7 756530_1 SILT

MB7a 2.0-2.5 7/01/2010 756530_8 756530_1 Silty CLAY

AKL Council MfE Sheep NES 2011 MfE Sch 10 Disch Gasworks Dip 2006- COMM / IND IND 1997-IND

Chem_Group

ChemName

Units

PAH PAHs

mg/kg mg/kg

<17.29 -

8.894 -

<14.11 -

<14.31 -

<17.1 -

<16.89 -

<13.9 -

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

<0.8645 <0.8645 <0.8645 <0.8645 <0.8645 <0.8645 <1.729 <1.729 <1.729 <1.729

<0.6926 <0.6926 <0.6926 <0.6926 <0.6926 <0.6926 <1.385 <1.385 <1.385 <1.385

<0.7054 <0.7054 <0.7054 <0.7054 <0.7054 <0.7054 <1.411 <1.411 <1.411 <1.411

<0.7157 <0.7157 <0.7157 <0.7157 <0.7157 <0.7157 <1.431 <1.431 <1.431 <1.431

<0.8552 <0.8552 <0.8552 <0.8552 <0.8552 <0.8552 <1.71 <1.71 <1.71 <1.71

<0.8444 <0.8444 <0.8444 <0.8444 <0.8444 <0.8444 <1.689 <1.689 <1.689 <1.689

<0.695 <0.695 <0.695 <0.695 <0.695 <0.695 <1.39 <1.39 <1.39 <1.39

<0.8645 <1.729 <0.8645 <0.8645 <1.729 <0.8645 <0.8645 <0.8645 <1.729 <1.729 <5 <3.458 <34.58 <5 <5 <3.458 <3.458 <3.458 <1.729 <3.458 <3.458 <1.729 <8.645 <1.729 <1.729 <3.458 <17.29 <1.729 <1.729 <1.729 <6.916 <3.458 <1.729 <1.729 <3.458 <3.458 <3.458 <3.458 <8.645 <3.458 <1.729 <3.458 <3.458 <34.58 <10.64 <21.28 <21.28 <74.48 <42.56

<0.6926 <1.385 1.33 <0.6926 <1.385 <0.6926 <0.6926 1.33 <1.385 <1.385 <5 <2.771 <27.71 <5 <5 <2.771 <2.771 <2.771 <1.385 <2.771 <2.771 <1.385 <6.926 <1.385 <1.385 <2.771 <13.85 <1.385 <1.385 <1.385 <5.541 <2.771 <1.385 <1.385 <2.771 <2.771 <2.771 <2.771 <6.926 <2.771 <1.385 <2.771 <2.771 <30 <8.316 <20 <20 139 139

<0.7054 <1.411 <0.7054 <0.7054 <1.411 <0.7054 <0.7054 <0.7054 <1.411 <1.411 <5 <2.822 <28.22 <5 <5 <2.822 <2.822 <2.822 <1.411 <2.822 <2.822 <1.411 <7.054 <1.411 <1.411 <2.822 <14.11 <1.411 <1.411 <1.411 <5.643 <2.822 <1.411 <1.411 <2.822 <2.822 <2.822 <2.822 <7.054 <2.822 <1.411 <2.822 <2.822 <30 <9.246 <20 <20 <69.25 <40

<0.7157 <1.431 <0.7157 <0.7157 <1.431 <0.7157 <0.7157 <0.7157 <1.431 <1.431 <5 <2.863 <28.63 <5 <5 <2.863 <2.863 <2.863 <1.431 <2.863 <2.863 <1.431 <7.157 <1.431 <1.431 <2.863 <14.31 <1.431 <1.431 <1.431 <5.726 <2.863 <1.431 <1.431 <2.863 <2.863 <2.863 <2.863 <7.157 <2.863 <1.431 <2.863 <2.863 <30 <9.211 <20 <20 <69.21 <40

<0.8552 <1.71 <0.8552 <0.8552 <1.71 <0.8552 <0.8552 <0.8552 <1.71 <1.71 <5 <3.421 <34.21 <5 <5 <3.421 <3.421 <3.421 <1.71 <3.421 <3.421 <1.71 <8.552 <1.71 <1.71 <3.421 <17.1 <1.71 <1.71 <1.71 <6.842 <3.421 <1.71 <1.71 <3.421 <3.421 <3.421 <3.421 <8.552 <3.421 <1.71 <3.421 <3.421 <34.21 <10.44 <20.88 <20.88 <73.08 <41.76

<0.8444 <1.689 <0.8444 <0.8444 <1.689 <0.8444 <0.8444 <0.8444 <1.689 <1.689 <5 <3.377 <33.77 <5 <5 <3.377 <3.377 <3.377 <1.689 <3.377 <3.377 <1.689 <8.444 <1.689 <1.689 <3.377 <16.89 <1.689 <1.689 <1.689 <6.755 <3.377 <1.689 <1.689 <3.377 <3.377 <3.377 <3.377 <8.444 <3.377 <1.689 <3.377 <3.377 <33.77 <10.88 <21.76 <21.76 <76.17 <43.52

<0.695 <1.39 <0.695 <0.695 <1.39 <0.695 <0.695 <0.695 <1.39 <1.39 <5 <2.78 <27.8 <5 <5 <2.78 <2.78 <2.78 <1.39 <2.78 <2.78 <1.39 <6.95 <1.39 <1.39 <2.78 <13.9 <1.39 <1.39 <1.39 <5.56 <2.78 <1.39 <1.39 <2.78 <2.78 <2.78 <2.78 <6.95 <2.78 <1.39 <2.78 <2.78 <30 <8.917 <20 <20 <68.92 <40

Phenols

Solvents SVOCs

TPH

Auckland ALWP Background

MB5 (a) 0.4-1.5 7/01/2010 756530_3 756530_1 Clayey SILT

2.15

200

360

Page 2 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T4 - 2010 Soil Sampling Results Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description Chem_Group

ChemName

Units

VOCs

Auckland ALWP Background

MB5 (a) 0.4-1.5 7/01/2010 756530_3 756530_1 Clayey SILT

MB1a 0.45-1.0 7/01/2010 756530_1 756530_1 Gravelly CLAY

MB1a 1.1-1.5 7/01/2010 756530_2 756530_1 Sandy SILT

MB3c 0.5-1.1 7/01/2010 756530_6 756530_1

MB4b 1.0-1.5 7/01/2010 756530_9 756530_1

MB6c 0.3-0.8 7/01/2010 756530_7 756530_1 SILT

MB7a 2.0-2.5 7/01/2010 756530_8 756530_1 Silty CLAY

AKL Council MfE Sheep NES 2011 MfE Sch 10 Disch Gasworks Dip 2006- COMM / IND IND 1997-IND <1.729 <3.458 <3.458 <3.458 <3.458 <1.729 -

<1.385 <2.771 <2.771 <2.771 <2.771 <1.385 -

<1.411 <2.822 <2.822 <2.822 <2.822 <1.411 -

<1.431 <2.863 <2.863 <2.863 <2.863 <1.431 -

<1.71 <3.421 <3.421 <3.421 <3.421 <1.71 -

<1.689 <3.377 <3.377 <3.377 <3.377 <1.689 -

<1.39 <2.78 <2.78 <2.78 <2.78 <1.39 -

Notes: - not analysed

Page 3 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T4 - 2010 Soil Sampling Results Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description Chem_Group

ChemName

Units

Asbestos 1. CAHs

BTEX

Inorganics

Metals

Organochlorine Pesticides

Other

Auckland ALWP Background

AKL Council MfE Sheep NES 2011 MfE Sch 10 Disch Gasworks Dip 2006- COMM / IND IND 1997-IND

8 600

500

0.4-12 2-260 0.1-0.65

100 7.5

70 10000 1300

10-170 20-90 1.5-65

400 325 250

10000 3300

0.03-0.45 4-320

105

54-1160

400

500

4200

1000 1700 190

14000

160

Statistical Summary Number of Number of Minimum Minimu Results Detects Concentration m Detect

Maximum Maximum Average Median Standard Number of Concentration Detect Concentration Concentration Deviation Guideline Exceedances

Number of Guideline Exceedances (Detects Only)

0 0 0 0 0 0 0 0 0 0 7 0 0 7 0 7 0 7 7 7 7 7 7 7 7 7 7 7 0 7 7 7 7 7 0 0 0 7 7 7 7 7 7 7 7 7 0 7 7 7 7 7 0 0 0 7 0

0 0 0 0 0 0 0 0 0 0 60.3 0 0 1066 0 18.36 0 0.142 5809 94.36 44.92 218.1 5576 0.4217 71.63 1103 1315 143 0 <1.729 <1.729 <1.729 <3.458 <1.729 0 0 0 <1.729 <1.729 <3.458 <6.916 <1.729 <3.458 <3.458 <3.458 <3.458 0 <3.458 <1.729 <1.729 <1.729 <1.729 0 0 0 <1.729 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0 4 0 1 2 2 0 5 1 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 7 0 0 7 0 4 0 3 7 7 7 7 7 2 7 7 7 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 10.25 0 0 16.83 0 <2 0 <0.1 381.3 8.374 2.034 4.104 638.5 <0.1 2.476 490.8 166.3 <4 0 <1.385 <1.385 <1.385 <2.771 <1.385 0 0 0 <1.385 <1.385 <2.771 <5.541 <1.385 <2.771 <2.771 <2.771 <2.771 0 <2.771 <1.385 <1.385 <1.385 <1.385 0 0 0 <1.385 0

ND ND ND ND ND ND ND ND ND ND 10.25 ND ND 16.83 ND 2.02 ND 0.1002 381.3 8.374 2.034 4.104 638.5 0.3984 2.476 490.8 166.3 37.02 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

ND ND ND ND ND ND ND ND ND ND 60.3 ND ND 1066 ND 18.36 ND 0.142 5809 94.36 44.92 218.1 5576 0.4217 71.63 1103 1315 143 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

18.55

394

199.8

429

6.1

2.02

7.8

0.079 2301 47 27 50 3478 0.15 42 697 686 63

0.05 1359 18.38 26.96 9.948 3274 0.05 39.97 661.3 794.4 52.07

0.038 1979 40 18 81 1850 0.18 24 218 505 45

0.77 0.77 0.77 1.5 0.77

0.7155 0.7155 0.7155 1.4315 0.7155

0.082 0.082 0.082 0.16 0.082

0.77 0.77 1.5 3.1 0.77 1.5 1.5 1.5 1.5

0.7155 0.7155 1.4315 2.863 0.7155 1.4315 1.4315 1.4315 1.4315

0.082 0.082 0.16 0.33 0.082 0.16 0.16 0.16 0.16

1.5 0.77 0.77 0.77 0.77

1.4315 0.7155 0.7155 0.7155 0.7155

0.16 0.082 0.082 0.082 0.082

0.77

0.7155

0.082

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0 4 0 1 2 2 0 5 1 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Page 4 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T4 - 2010 Soil Sampling Results Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description Statistical Summary Number of Number of Minimum Minimu Results Detects Concentration m Detect

Maximum Maximum Average Median Standard Number of Concentration Detect Concentration Concentration Deviation Guideline Exceedances

mg/kg mg/kg

7 0

1 0

8.894 0

8.894 ND

<17.29 0

8.894 ND

8.445

0.86

0 0

Number of Guideline Exceedances (Detects Only) 0 0

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

7 7 7 7 7 7 7 7 7 7

0 0 0 0 0 0 0 0 0 0

<0.6926 <0.6926 <0.6926 <0.6926 <0.6926 <0.6926 <1.385 <1.385 <1.385 <1.385

ND ND ND ND ND ND ND ND ND ND

<0.8645 <0.8645 <0.8645 <0.8645 <0.8645 <0.8645 <1.729 <1.729 <1.729 <1.729

ND ND ND ND ND ND ND ND ND ND

0.38 0.38 0.38 0.38 0.38 0.38 0.77 0.77 0.77 0.77

0.35785 0.35785 0.35785 0.35785 0.35785 0.35785 0.7155 0.7155 0.7155 0.7155

0.041 0.041 0.041 0.041 0.041 0.041 0.082 0.082 0.082 0.082

0 0 0 0 0 0 0 0 0 0

0 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 0 0 0 0 7 7 7 7 7 7 0 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 0 7

0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1

0 <0.6926 <1.385 <0.695 <0.6926 <1.385 <0.6926 <0.6926 <0.695 <1.385 <1.385 <5 <2.771 <27.71 <5 <5 <2.771 0 0 0 0 <2.771 <2.771 <1.385 <2.771 <2.771 <1.385 0 <6.926 <1.385 <1.385 <2.771 <13.85 <1.385 <1.385 <1.385 <5.541 <2.771 <1.385 <1.385 <2.771 <2.771 <2.771 <2.771 <6.926 <2.771 <1.385 <2.771 <2.771 <30 <8.316 <20 <20 <68.92 0 <40

ND ND ND 1.33 ND ND ND ND 1.33 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 139 ND 139

0 <0.8645 <1.729 1.33 <0.8645 <1.729 <0.8645 <0.8645 1.33 <1.729 <1.729 <5 <3.458 <34.58 <5 <5 <3.458 0 0 0 0 <3.458 <3.458 <1.729 <3.458 <3.458 <1.729 0 <8.645 <1.729 <1.729 <3.458 <17.29 <1.729 <1.729 <1.729 <6.916 <3.458 <1.729 <1.729 <3.458 <3.458 <3.458 <3.458 <8.645 <3.458 <1.729 <3.458 <3.458 <34.58 <10.88 <21.76 <21.76 139 0 139

ND ND ND 1.33 ND ND ND ND 1.33 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 139 ND 139

0.38 0.77 0.52 0.38 0.77 0.38 0.38 0.52 0.77 0.77 2.5 1.5 15 2.5 2.5 1.5

0.35785 0.7155 0.4222 0.35785 0.7155 0.35785 0.35785 0.4222 0.7155 0.7155 2.5 1.4315 14.315 2.5 2.5 1.4315

0.041 0.082 0.36 0.041 0.082 0.041 0.041 0.36 0.082 0.082 0 0.16 1.6 0 0 0.16

1.5 1.5 0.77 1.5 1.5 0.77

1.4315 1.4315 0.7155 1.4315 1.4315 0.7155

0.16 0.16 0.082 0.16 0.16 0.082

3.8 0.77 0.77 1.5 7.7 0.77 0.77 0.77 3.1 1.5 0.77 0.77 1.5 1.5 1.5 1.5 3.8 1.5 0.77 1.5 1.5 16 4.8 10 10 51

3.5785 0.7155 0.7155 1.4315 7.155 0.7155 0.7155 0.7155 2.863 1.4315 0.7155 0.7155 1.4315 1.4315 1.4315 1.4315 3.5785 1.4315 0.7155 1.4315 1.4315 15 4.623 10 10 36.54

0.41 0.082 0.082 0.16 0.82 0.082 0.082 0.082 0.33 0.16 0.082 0.082 0.16 0.16 0.16 0.16 0.41 0.16 0.082 0.16 0.16 1.1 0.49 0.37 0.37 39

20.88

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Chem_Group

ChemName

Units

Asbestos PAH PAHs

Phenols

Solvents SVOCs

TPH

Auckland ALWP Background

AKL Council MfE Sheep NES 2011 MfE Sch 10 Disch Gasworks Dip 2006- COMM / IND IND 1997-IND

2.15

200

360

Page 5 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T4 - 2010 Soil Sampling Results Field_ID Sampled_Date-Time SampleCode Lab_Report_Number Matrix_Description Chem_Group

ChemName

Units

Asbestos VOCs

Auckland ALWP Background

AKL Council MfE Sheep NES 2011 MfE Sch 10 Disch Gasworks Dip 2006- COMM / IND IND 1997-IND

Statistical Summary Number of Number of Minimum Minimu Results Detects Concentration m Detect

Maximum Maximum Average Median Standard Number of Concentration Detect Concentration Concentration Deviation Guideline Exceedances

0 0 0 0 0 0 0 0 0 7 0 0 0 7 0 0 0 0 7 0 0 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 7 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 <1.729 0 0 0 <3.458 0 0 0 0 <3.458 0 0 <3.458 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 <3.458 <1.729 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 <1.385 0 0 0 <2.771 0 0 0 0 <2.771 0 0 <2.771 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 <2.771 <1.385 0 0 0 0 0 0 0 0 0 0

ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND

0.77

0.7155

0.082

1.5

1.4315

0.16

1.5

1.4315

0.16

1.5

1.4315

0.16

1.5 0.77

1.4315 0.7155

0.16 0.082

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Number of Guideline Exceedances (Detects Only) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Notes: - not analysed

Page 6 of 6 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T5 - 2010 Groundwater Sampling Results MB1a 7/01/2010 756530_5 756530_1

LocCode Sampled_Date-Time SampleCode Lab_Report_Number Chem_Group

BTEX

ChemName

Benzene Ethylbenzene Toluene Xylene (m & p) Xylene (o) Total Xylene (ESDAT) Fungicides Captan Difenoconazole Iprodione Metalaxyl Flusilazole (NuStar) Prochloraz Propiconazole Systhane Vinclozolin Herbicides Acetochlor Bromacil Butachlor Chlorotoluron Cyanazine Diuron Fluometuron Haloxyfop-methyl Hexazinone Linuron Metachlor Metolachlor Molinate Norflurazon Oxyfluorfen Pendimethalin Prometryn Propanil Propazine Simazine Simetryn Terbacil Terbutryn Thiobencarb Trifluralin Inorganics Ammonia as N (Filtered) Cyanide Total Hardness as CaCO3 (Filtered) Metals Arsenic (Filtered) Cadmium (Filtered) Calcium (Filtered) Chromium (Filtered) Copper (Filtered) Lead (Filtered) Magnesium (Filtered) Mercury (Filtered) Nickel (Filtered) Potassium (Filtered) Sodium (Filtered) Zinc (Filtered) Organic Terbutylazine Organochlorine Pesticides 2,4-DDT 4,4-DDE a-BHC Aldrin Aldrin + Dieldrin b-BHC chlordane cis-Chlordane trans-chlordane d-BHC DDD DDT DDT+DDE+DDD Dieldrin Endosulfan I Endosulfan II Endosulfan sulphate Endrin Endrin aldehyde Endrin ketone g-BHC (Lindane) Heptachlor Heptachlor epoxide Hexachlorobenzene Methoxychlor o,p-DDD o,p''''-DDE

Units

ANZECC (2000) Ecosystems Fresh Water (80%)

ANZECC (2000) Ecosystems Marine Water (80%)

NZDWS 2005

2000

1300

10 300 800

640 600

100

400 40 0.7 20

400 20 10 0.007

0.057

0.07 0.002

0.035

40 0.008 0.009

0.03

0.018

0.014

0.6

0.0008

0.036

0.01 0.004

0.0025 0.0094

0.008 0.012

0.05 2 0.01

0.0054 0.017

0.0014 0.56

0.007 0.08

0.031

0.043

0.04 0.27

0.2

0.04

0.06

1 0.7

0.02

Table T5 - 2010 Groundwater Revision 4 25 July 2012 I:\AEEP\60275817 AEEP ACT001 CRL Contaminated Land Assessment\8. Issued Docs\8.1 Reports\CLA Report 10Dec12\Appendix A Tables, Figures\updated tables\T5-60222458-2010 Groundwater-20120814.xls

16.42 0.007924 <0.00005 5.004 0.008783 0.008326 0.0006606 0.9534 0.004851 0.002938 5.895 86.16 0.01546 <5 <5 <5 <10 <5 <5 <5 <10 <20 <5 <10 <10 <10 <10 <10 <5 <5 <5 <5 -

MB1b 7/01/2010 756530_4 756530_1

116.8 <0.001 <0.00005 38.15 0.006081 0.005665 0.00591 5.227 <0.00008 0.00229 7.556 25.24 0.00492 <5 <5 <5 <10 <5 <5 <5 <10 <20 <5 <10 <10 <10 <10 <10 <5 <5 <5 <5 -

MB3a 7/01/2010 756530_10 756530_1

102.4 0.001818 <0.00005 30.18 <0.0005 0.0008414 0.0002354 6.557 <0.00008 0.001837 5.432 59.87 0.007118 <5 <5 <5 <10 <5 <5 <5 <10 <20 <5 <10 <10 <10 <10 <10 <5 <5 <5 <5 -

MB3b 7/01/2010 756530_11 756530_1

69.88 <0.001 0.0001427 18.21 <0.0005 <0.0005 0.0003131 5.924 <0.00008 0.007278 6.816 56.6 0.02987 <5 <5 <5 <10 <5 <5 <5 <10 <20 <5 <10 <10 <10 <10 <10 <5 <5 <5 <5 -

MB3c 7/01/2010 756530_12 756530_1

34.55 <0.001 <0.00005 10.1 <0.0005 0.0009423 0.0002979 2.264 <0.00008 0.002105 3.171 24.56 0.003784 <5 <5 <5 <10 <5 <5 <5 <10 <20 <5 <10 <10 <10 <10 <10 <5 <5 <5 <5 -

MB4a 7/01/2010 756530_13 756530_1

22.34 <0.001 <0.00005 7.216 0.08152 0.001337 0.0005069 1.049 <0.00008 <0.0005 26.6 47.48 0.002946 <5 <5 <5 <10 <5 <5 <5 <10 <20 <5 <10 <10 <10 <10 <10 <5 <5 <5 <5 -

MB4b 7/01/2010 756530_14 756530_1

64.38 0.005022 <0.00005 19.52 0.007867 0.000585 0.0001113 3.8 <0.00008 <0.0005 12.01 57.79 0.001444 <5 <5 <5 <10 <5 <5 <5 <10 <20 <5 <10 <10 <10 <10 <10 <5 <5 <5 <5 -

MB6a 7/01/2010 756530_15 756530_1

64.55 0.004814 <0.00005 20.79 0.0016 0.0007482 0.003749 3.069 <0.00008 <0.0005 6.125 21.44 0.002207 <5 <5 <5 <10 <5 <5 <5 <10 <20 <5 <10 <10 <10 <10 <10 <5 <5 <5 <5 -

Page 1 of 3 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T5 - 2010 Groundwater Sampling Results MB1a 7/01/2010 756530_5 756530_1

LocCode Sampled_Date-Time SampleCode Lab_Report_Number Chem_Group

ChemName

BTEX Organophosphorous Pesticides Azinophos methyl Chlorpyrifos Chlorpyrifos-methyl Diazinon Dichlorvos Dimethoate Malathion Methyl parathion Naled (Dibrom) Terbufos other 3-Iodo-2-propynyl butyl carbamate Assure Baythroid Chlorothalonil Di(2-ethylhexyl)adipate Metribuzin Oxadiazon Paclobutrazol Propachlor Pyriproxyfen Tebuconazole Triazophos PAH PAHs (Sum of total) PAHs Benzo[a]pyrene Toxic Equivalence (TEF) 2-chloronaphthalene 2-methylnaphthalene Acenaphthene Acenaphthylene Anthracene Benz(a)anthracene Benzo(a) pyrene Benzo(g,h,i)perylene Benzo(k)fluoranthene Benzo[b]fluoranthene + Benzo[j]fluoranthene Benzo[b+j]fluoranthene Chrysene Dibenz(a,h)anthracene Fluoranthene Fluorene Indeno(1,2,3-c,d)pyrene Naphthalene Phenanthrene Pyrene PCBs PCB 101 PCB 118 PCB 138 PCB 153 PCB 180 PCB 28 PCB 52 PCB 105 PCB 114 PCB 123 PCB 126 PCB 156 PCB 157 PCB 167 PCB 169 PCB 189 PCB 77 PCB 81 PCB-110 PCB-121 PCB-128 PCB-141 PCB-149 PCB-151 PCB-159 PCB-170 PCB-18 PCB-194 PCB-206 PCB-31 PCB-44 PCB-49 PCB-60 PCB-86

Units

ANZECC (2000) Ecosystems Fresh Water (80%)

ANZECC (2000) Ecosystems Marine Water (80%)

µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L mg/L µg/L µg/L

0.11 1.2

0.3

4 40

70 200

µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L mg/L

0.7

MB3a 7/01/2010 756530_10 756530_1

MB3b 7/01/2010 756530_11 756530_1

MB3c 7/01/2010 756530_12 756530_1

MB4a 7/01/2010 756530_13 756530_1

MB4b 7/01/2010 756530_14 756530_1

MB6a 7/01/2010 756530_15 756530_1

NZDWS 2005

2 0.3 1.1

MB1b 7/01/2010 756530_4 756530_1

120

<5 <55 -

<3 <3 <3 <3 <3 <3 <5 <5 <5 <0.005

<3 <5 <3 <3 <5 <3 <3 <3 -

Page 2 of 3 Print Date: 14/12/2012

Client: Auckland Transport Project: City Rail Link Project No: 60222458

Table T5 - 2010 Groundwater Sampling Results MB1a 7/01/2010 756530_5 756530_1

LocCode Sampled_Date-Time SampleCode Lab_Report_Number Chem_Group

ChemName

Units

BTEX Pesticides

Atrazine Carbaryl Carbofuran Cyhalothrin/Karate Cypermethrins(total) Deltamethrin Fluvalinate Parathion Permethrin Pirimicarb Pirimiphos-methyl 2,4-dimethylphenol 2-methylphenol 2-nitrophenol 3-&4-methylphenol 4,6-Dinitro-2-methylphenol 4-chloro-3-methylphenol 4-nitrophenol Phenol Phenols Decachlorobiphenyl PCBs (Sum of total) 2,4,5-trichlorophenol 2,4,6-trichlorophenol 2,4-dichlorophenol 2,4-Dinitrotoluene 2,6-dinitrotoluene 2-chlorophenol 3,3-Dichlorobenzidine 4-bromophenyl phenyl ether 4-chlorophenyl phenyl ether Aniline Benzyl alcohol Bis(2-chloroethoxy) methane Bis(2-chloroethyl)ether Bis(2-chloroisopropyl) ether Bis(2-ethylhexyl) phthalate Butyl benzyl phthalate Carbazole Dibenzofuran Diethylphthalate Dimethyl phthalate Di-n-butyl phthalate Di-n-octyl phthalate Diphenylamine Hexachlorocyclopentadiene Hexachloroethane Nitrobenzene N-nitrosodi-n-propylamine n-Nitrosodiphenylamine Pentachlorophenol C6-C36 C7 - C9 TPH C6 - C9 TPH C10 - C14 TPH+C10 - C36 (Sum of total) TPH C7-C36 TPH_C6-C9 ALIPHATIC TPH+C15 - C36 (Sum of total) 1,2,4-trichlorobenzene 1,2-dichlorobenzene 1,3-dichlorobenzene 1,4-dichlorobenzene Hexachlorobutadiene Isophorone

Phenols

Polychlorinated Biphenyls SVOCs

TPH

VOCs

ANZECC (2000) Ecosystems Fresh Water (80%)

ANZECC (2000) Ecosystems Marine Water (80%)

0.15

0.002 0.008

0.04

0.1

720

95 270 250

200

870

4800

1300 5100 64.6

500 1300

300 270 520 100

240

MB3a 7/01/2010 756530_10 756530_1

MB3b 7/01/2010 756530_11 756530_1

MB3c 7/01/2010 756530_12 756530_1

MB4a 7/01/2010 756530_13 756530_1

MB4b 7/01/2010 756530_14 756530_1

MB6a 7/01/2010 756530_15 756530_1

<5 <5 <10 <10 <100 <10 <10 <10 <10 <10 <5 <10 <10 <5 <30 <5 <5 <10 <50 <5 <5 <5 <30 <10 <5 <5 <10 <10 <10 <10 <25 <10 <5 <10 <10 <100 <0.1 <200 <200 <0.7 <400 <5 <10 <10 <10 <10 <5

NZDWS 2005

0.015

1200

MB1b 7/01/2010 756530_4 756530_1

1500 400 0.7

<5 <5 <10 <10 <100 <10 <10 <10 <10 <10 <5 <10 <10 <5 <30 <5 <5 <10 <50 <5 <5 <5 <30 <10 <5 <5 <10 <10 <10 <10 <25 <10 <5 <10 <10 <100 <0.15 <400 <400 <1.35 <800 <5 <10 <10 <10 <10 <5

<5 <5 <10 <10 <100 <10 <10 <10 <10 <10 <5 <10 <10 <5 <30 <5 <5 <10 <50 <5 <5 <5 33.93 <10 <5 <5 <10 <10 <10 <10 <25 <10 <5 <10 <10 <100 <0.1 <200 <200 <0.7 <400 <5 <10 <10 <10 <10 <5

Notes: - not analysed

Page 3 of 3 Print Date: 14/12/2012

Client Auckland Transport Project: City Rail Link Project No: 60222458

A.1 AECOM Sample Register Field_ID Soil Samples BH102_1.1 BH103_0.5 BH103_1.2

SampleCode Sampled_Date Sample_Type Chem_Groups 986810_5 986810_1 986810_2

13/03/2012 13/03/2012 13/03/2012

Normal Normal Normal

BH105_0.4 - 0.5

992563_1

26/03/2012

Normal

BH105_0.9 - 1.0 BH105_4.0 - 4.5 BH116_0.5-0.6

992563_2 992563_7 985965_6

26/03/2012 26/03/2012 9/03/2012

Normal Normal Normal

BH116_1.5-1.6 BH116_7.3-7.6 BH134_0.1-0.2 BH134_1.0-1.1 BH134_3.0-3.2 BH154_0.2-0.3

985965_8 985965_12 985965_13 985965_15 985965_17 985965_20

9/03/2012 9/03/2012 9/03/2012 9/03/2012 9/03/2012 9/03/2012

Normal Normal Normal Normal Normal Normal

BH154_3.0-3.2 985965_23 BH154_3.0-3.2A 985965_24 BH162_0.2-0.3 985965_28

9/03/2012 9/03/2012 9/03/2012

Normal Normal Normal

BH162_1.5-1.7 985965_30 BH162_2.3-2.5 985965_31 BH162_2.3-2.5A 985965_32 BH167_0.1-0.2 985965_1 BH167_1.0-1.2 985965_3 TP101_0.1 986819_1

9/03/2012 9/03/2012 9/03/2012 9/03/2012 9/03/2012 13/03/2012

Normal Normal Normal Normal Normal Normal

TP101_0.5-0.6

986819_2

13/03/2012

Normal

TP102_0.1-0.2

986894_1

13/03/2012

Normal

TP102_0.5-0.7

986894_2

13/03/2012

Normal

TP103_0.1_0.2 TP103_0.9-1.2 TP104_ 0.2 TP104_0.6- 0.7 TP104_ 1-1.1 TP105_.2 TP105_.5

997729_1 997729_3 986792_1 986792_2 986792_3 986803_1 986803_2

11/04/2012 11/04/2012 13/03/2012 13/03/2012 13/03/2012 13/03/2012 13/03/2012

Normal Normal Normal Normal Normal Normal Normal

TP105_1-1.1 TP106_0.1-0.2 TP106_1.3-1.4 TP107_0.3 TP107_0.9-1.0 TP107_2.5

986803_3 985965_35 985965_36 986872_1 986872_3 986872_6

13/03/2012 9/03/2012 9/03/2012 13/03/2012 13/03/2012 13/03/2012

Normal Normal Normal Normal Normal Normal

BTEX, Metals, PAH/Phenols, TPH Asbestos, BTEX, Metals, PAH/Phenols, TPH Amino Aliphatics, Amino Aromatics, BTEX, Chlorinated Hydrocarbons, Explosives, Halogenated Benzenes, Halogenated Phenols, Metals, Organochlorine Pesticides, PAH/Phenols, Phthalates, Solvents, SVOCs, TPH Abestos, BTEX, Metals, Organochlorine Pesticides, PAHs, Phenols, SVOCs, TPH, VOCs Abestos, BTEX, Metals, PAHs, TPH BTEX, Metals, PAHs, TPH Asbestos, Amino Aliphatics, Amino Aromatics, BTEX, Chlorinated Hydrocarbons, Explosives, Halogenated Benzenes, Halogenated Hydrocarbons, Halogenated Phenols, MAH, Metals, Organochlorine Pesticides, PAH/Phenols, Phthalates, Solvents, SVOCs, TPH BTEX, Metals, PAH/Phenols, TPH Metals, PAH/Phenols, TPH Asbestos, BTEX, Metals, PAH/Phenols, TPH Metals, PAH/Phenols, TPH Metals, PAH/Phenols, TPH Asbestos, BTEX, Halogenated Benzenes, Metals, Organochlorine Pesticides, PAH/Phenols, TPH Metals, PAH/Phenols, TPH Metals, PAH/Phenols, TPH Asbestos, Amino Aliphatics, Amino Aromatics, BTEX, Chlorinated Hydrocarbons, Explosives, Halogenated Benzenes, Halogenated Phenols, Metals, Organochlorine Pesticides, PAH/Phenols, Phthalates, Solvents, SVOCs, TPH Metals, PAH/Phenols, TPH Metals, PAH/Phenols, TPH Metals, PAH/Phenols, TPH Asbestos, BTEX, Metals, PAH/Phenols, TPH BTEX, Metals, PAH/Phenols, TPH Asbestos, Amino Aliphatics, Amino Aromatics, BTEX, Chlorinated Hydrocarbons, Explosives, Halogenated Benzenes, Halogenated Phenols, Metals, Organochlorine Pesticides, PAH/Phenols, Phenolics, Phthalates, Solvents, SVOCs, TPH Amino Aliphatics, Amino Aromatics, BTEX, Chlorinated Hydrocarbons, Explosives, Halogenated Benzenes, Halogenated Phenols, Metals, Organochlorine Pesticides, PAH/Phenols, Phenolics, Phthalates, Solvents, SVOCs, TPH Asbestos, Amino Aliphatics, Amino Aromatics, BTEX, Chlorinated Hydrocarbons, Explosives, Halogenated Benzenes, Halogenated Hydrocarbons, Halogenated Phenols, MAH, Metals, Organochlorine Pesticides, PAH/Phenols, Phthalates, Solvents, SVOCs, TPH Amino Aliphatics, Amino Aromatics, BTEX, Chlorinated Hydrocarbons, Explosives, Halogenated Benzenes, Halogenated Hydrocarbons, Halogenated Phenols, MAH, Metals, Organochlorine Pesticides, PAH/Phenols, Phthalates, Solvents, SVOCs, TPH Asbestos, BTEX, Metals, PAHs, TPH BTEX, Metals, PAHs, TPH Asbestos, BTEX, Metals, PAH/Phenols, Phenolics, TPH Asbestos, BTEX, Metals, PAH/Phenols, Phenolics, TPH Metals, PAH/Phenols, TPH Asbestos, BTEX, Metals, PAH/Phenols, TPH Asbestos, Amino Aliphatics, Amino Aromatics, BTEX, Chlorinated Hydrocarbons, Explosives, Halogenated Benzenes, Halogenated Phenols, Metals, Organochlorine Pesticides, PAH/Phenols, Phenolics, Phthalates, Solvents, SVOCs, TPH Metals, PAH/Phenols, TPH Asbestos, Metals, PAH/Phenols, TPH Metals, PAH/Phenols, TPH BTEX, Metals, PAH/Phenols, TPH Metals, PAH/Phenols, TPH Metals, PAH/Phenols, TPH

Sheet1 Revision V3 25 July 2012 I:\AEEP\60275817 AEEP ACT001 CRL Contaminated Land Assessment\8. Issued Docs\8.1 Reports\CLA Report 10Dec12\Appendix A Tables, Figures\60222458-Soil and GW Sample RegisterPage 1 of 2 20120626.xlsx Print Date: 14/12/2012

Client Auckland Transport Project: City Rail Link Project No: 60222458

A.1 AECOM Sample Register Field_ID Soil Samples TP108_0.2

SampleCode Sampled_Date Sample_Type Chem_Groups 986880_1

13/03/2012

Normal

986880_3

13/03/2012

Normal

TP108_2.0-2.1 986880_5 TP109_0.2 986814_1 TP109_1-1.1 986814_3 Soil QA/QC Samples BH103_D 986810_3 BH105_D 992563_8 TP101D 986819_4 TP105 D 986803_5 TP106B 985965_38 TB01 985965_39 TB02 986814_4 BH105_B 992563_9 BH173B 997729_11 Groundwater Samples MW11 999491_1 MW35 999491_2 MW45 999491_3

13/03/2012 13/03/2012 13/03/2012

Normal Normal Normal

13/03/2012 26/03/2012 13/03/2012 13/03/2012 8/03/2012 8/03/2012 11/03/2012 26/03/2012 11/03/2012

Duplicate Duplicate Duplicate Duplicate Rinsate Trip Blank Trip Blank Rinsate Rinsate

18/04/2012 18/04/2012 18/04/2012

Normal Normal Normal

17/04/2012 17/04/2012 18/04/2012 17/04/2012

Normal Normal Normal Normal

18/04/2012 18/04/2012 17/04/2012

Duplicate Rinsate Trip Blank

TP108_1.1-1.2

MW103 999491_4 MW105 999491_5 MW167 999491_7 MW5b 999491_6 Groundwater QA/QC Samples DUP01 (MW35) 999491_8 R01 999491_9 Trip Blank (TB01) 999491_10

Asbestos, Amino Aliphatics, Amino Aromatics, BTEX, Chlorinated Hydrocarbons, Explosives, Halogenated Benzenes, Halogenated Phenols, Metals, Organochlorine Pesticides, PAH/Phenols, Phthalates, Solvents, SVOCs, TPH Amino Aliphatics, Amino Aromatics, BTEX, Chlorinated Hydrocarbons, Explosives, Halogenated Benzenes, Halogenated Phenols, Metals, Organochlorine Pesticides, PAH/Phenols, Phthalates, Solvents, SVOCs, TPH Metals, PAH/Phenols, TPH Asbestos, BTEX, Metals, PAH/Phenols, TPH Metals, PAH/Phenols, TPH BTEX, Metals, TPH BTEX, Metals, PAHs, TPH Metals Metals BTEX, Metals, PAHs, TPH BTEX, TPH BTEX, TPH BTEX, Metals, TPH BTEX, Metals, TPH Inorganics, Metals, PAHs, Phenols, TPH BTEX, Inorganics, Metals, PAHs, Phenols, TPH Fungicides, Herbicides, Inorganics, Metals, Organics, Organochlorine Pesticides, Organophosphorous Pesticides, PAHs, PCBs, Pesticides, TPH Inorganics, Metals, PAHs, Phenols, TPH Metals, PAHs, TPH Inorganics, Metals, PAHs, Phenols, TPH BTEX, Metals, PAHs, TPH BTEX, Metals, PAHs, TPH Metals, PAHs, TPH BTEX, TPH

Note Groundwater Well Location IDs have been ammended for the purposes of this CLA as follows: Installed By Previous ID Current ID MW11 Beca BHI1 MW35 Beca BH35 MW45 Beca BH45 MW103 Unknown APB&B 2010 MB5b MW5b

1750000

1752000

1754000

1756000

1758000

1760000

1762000

1764000

1766000

1768000

Auckland

Parnell

Eden Terrace Newmarket

City Rail Link - Contaminated Land Assessment Figure F1 - CRL Location Plan

FINAL

60275817_08_001_01

1759000

5919000

5918000

1758000

5917000

Mountain Road

Asquith

Exmouth

City Rail Link - Contaminated Land Assessment Figure F2 - CRL Designation Key Stage 1 Desk Study Sites of Interest FINAL

60275817_08_002_01

5920000

5918000

1758000

Legend

City Rail Link - Contaminated Land Assessment Figure F3 - Consented Well Locations

FINAL

60275817_08_003_01

5920000

5918000

1758000

Depth

AECOM - TP107 Arsenic (mg/kg) Standard (mg/kg)

AECOM - TP104 B(a)PTEF(mg/kg) Standard (mg/kg)

Depth

AECOM - BH167 B(a)PTEF(mg/kg) Standard (mg/kg)

Depth

AECOM - BH171 B(a)P TEF(mg/kg) Standard (mg/kg)

Legend

City Rail Link - Contaminated Land Assessment Figure F4 - Environmental Site Assessment Soil Sample Locations FINAL

60275817_08_004_01

1759000

5919000

5918000

1758000

5917000

Legend

City Rail Link - Contaminated Land Assessment Figure F5 - Environmental Site Assessment Groundwater Sample Locations FINAL

60275817_08_005_01

AECOM

Appendix B

Bore logs

25 July 2012 (Revision 4)

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

AECOM

Appendix B

25 July 2012 (Revision 4)

Technical Report to Support Assessment of Environmental Effects (City Rail Link Notice of Requirement) Contaminated Land Assessment

Bore logs

Project

City Rail Link

Co-ordinates

(consistency, relative density, water content, plasticity, grading, etc)

GEOLOGICAL DESCRIPTION

Graphic Log

MATERIAL DESCRIPTION

Depth

PID (ppm)

Analysis

Sample ID

Casing remarks

-90Â°

Various Locations Along the CRL in Auckland

Feature

SAMPLING & TESTING

Core Loss/Lift

Drilling Method

Project number 60222458

Orientation Location

Elevation

STAINING/ ODOURS AND COMMENTS

Piezometer Construction

Auckland Transport

Groundwater

Client

BH102

HOLE IDENTIFICATION

LOG OF DRILLHOLE

0 - 100%

Asphalt.

No odours or staining observed.

FILL

GRAVEL with minor silt, brown. Tightly packed, moist. Gravel is upto 50 mm.

VAC EX

BH102_1.0-1.3*

0.0

GRAVEL with some sand, brown. Loose, moist. Gravel is upto 5 mm.

Silty GRAVEL, grey brown. Tightly packed, moist.

DRILLHOLE LOG ENVIRONMENTAL CRL.GPJ BASE.GDT 13/08/12

BH102 terminated at 1.4m

GROUNDWATER OBSERVATIONS Depth _ Reading Date

Date logged 11/03/2012 Logged DLD Checked DDf

Remarks 1) Hand cleared to 1.4 mbgl with a combination of vacuum extraction and hand auger. 3) PID headspace readings taken from bag sample with MiniRAE PID calibrated to 100ppm Isobutylene. 4) Three attempts at location, the deepest got to 1.4m, all encountered obstructions. No ground water encountered

Driller

DCN

Drill Rig

Eco-probe

Started

11/03/2012

Finished 11/03/2012 Page

Date Printed: 13/08/2012

LOG OF DRILLHOLE Project

City Rail Link

Co-ordinates

(consistency, relative density, water content, plasticity, grading, etc)

GEOLOGICAL DESCRIPTION

Graphic Log

MATERIAL DESCRIPTION

Depth

PID (ppm)

Analysis

Sample ID

Casing remarks

-90°

Various Locations Along the CRL in Auckland

Feature

SAMPLING & TESTING

Core Loss/Lift

Drilling Method

Project number 60222458

Orientation Location

Elevation

STAINING/ ODOURS AND COMMENTS

Piezometer Construction

Auckland Transport

Groundwater

Client

BH103

HOLE IDENTIFICATION

0 - 100%

Asphalt. Concrete.

VAC EX

Gravelly CLAY, yellow brown with some grey staining. Soft to firm, dry to moist, low plasticity. Gravel is upto 30 mm Ø.

1.0

FILL

BH103_0.6-1.0*

No odours observed.

Clayey SAND with some silt and gravel, yellow grey. Loose, moist.

2 BH103 terminated at 1.95m

DRILLHOLE LOG ENVIRONMENTAL CRL.GPJ BASE.GDT 13/08/12

GROUNDWATER OBSERVATIONS Depth _ Reading Date

Date logged 10/03/2012 Logged DLD Checked DDf

Remarks 1) Hand cleared to 1.95 mbgl with a combination of concrete cutter, jack hammer, vacuum extraction and hand auger. 3) PID headspace readings taken from bag sample with MiniRAE PID calibrated to 100ppm Isobutylene. 4) Three attempts at location, the deepest got to 1.95m, all encountered concrete below 1m. No ground water encountered

Driller

DCN

Drill Rig

Eco-probe

Started

10/03/2012

Finished 10/03/2012 Page

Date Printed: 13/08/2012

LOG OF DRILLHOLE Project

City Rail Link

Co-ordinates

(consistency, relative density, water content, plasticity, grading, etc)

GEOLOGICAL DESCRIPTION

Graphic Log

MATERIAL DESCRIPTION

Depth

PID (ppm)

Analysis

Sample ID

Casing remarks

-90Â°

Various Locations Along the CRL in Auckland

Feature

SAMPLING & TESTING

Core Loss/Lift

Drilling Method

Project number 60222458

Orientation Location

Elevation

STAINING/ ODOURS AND COMMENTS

Piezometer Construction

Auckland Transport

Groundwater

Client

BH105

HOLE IDENTIFICATION

0 - 100%

BH105_0.4-0.5

0.0

BH105_0.9-1.0

0.0

BH105_1.5-1.6

0.0

BH105_1.9-2.0

0.0

BH105_2.8-3.0

0.0

Sandy SILT with some gravel, brown. Soft, moist.

FILL

No odours or staining observed.

Asphalt. Concrete.

0.7m: Grading to stiff, mottled brown grey. 1

SILT with minor sand, grey. Stiff, moist.

SILTY SAND, grey. Medium dense, moist. variable silt / sand lenses. becoming harder with depth.

BH105_3.9-4.0

0.0

BH105_4.0-4.45

0.0

ECBF

4 SPT at 4-4.45 on ECBF bedrock.

WASH

DRILLHOLE LOG ENVIRONMENTAL CRL.GPJ BASE.GDT 13/08/12

BH105 terminated at 7m

GROUNDWATER OBSERVATIONS Depth _ Reading Date 5.04m

26/03/2012

Date logged 26/03/2012 Logged DDf Checked DDf

Remarks 1) Hand cleared to 1.5 mbgl with hand auger. 2) Tractor mounted rig with 90 mm diamater rods used to advance borehole to target depth (Wash drilling). 3) PID headspace readings taken from bag sample with MiniRAE PID calibrated to 100ppm Isobutylene.

Driller

DCN

Drill Rig

Kubota

Started

26/03/2012

Finished 26/03/2012 Page

Date Printed: 13/08/2012

LOG OF DRILLHOLE Project

City Rail Link

Co-ordinates

(consistency, relative density, water content, plasticity, grading, etc)

GEOLOGICAL DESCRIPTION

Graphic Log

MATERIAL DESCRIPTION

Depth

PID (ppm)

Analysis

Sample ID

Casing remarks

-90Â°

Various Locations Along the CRL in Auckland

Feature

SAMPLING & TESTING

Core Loss/Lift

Drilling Method

Project number 60222458

Orientation Location

Elevation

STAINING/ ODOURS AND COMMENTS

Piezometer Construction

Auckland Transport

Groundwater

Client

BH116

HOLE IDENTIFICATION

0 - 100%

No staining or odours observed.

Asphalt. GRAVEL, grey. Tightly packed, dry. BH116_0.5-0.6*

4.4

BH116_1.0-1.1

7.6

BH116_1.5-1.6*

1.9

Silty CLAY with minor gravel, light brown. Stiff, moist, high plasticity.

VAC EX

Grades to soft, wet. FILL

BH116_2.5-2.6

9.8

Clayey CILT, dark brown. Soft, moist, moderate plasticity. Fine sandy SILT, grey. Firm, moist. Lenses of sand throughout bed.

BH116_3.5-3.6

7.5

Grades to stiff. 4

Sonic

6.7

5 FILL

BH116_5.0-5.1

7 Siltstone, grey. Very weak, moist.

DRILLHOLE LOG ENVIRONMENTAL CRL.GPJ BASE.GDT 13/08/12

BH116_7.3-7.6*

7.65m: SPT 7/14/16. BH116 terminated at 7.65m

GROUNDWATER OBSERVATIONS Depth _ Reading Date

Date logged 05/03/2012 Logged MD

Remarks 1) Hand cleared to 1.5 mbgl with vacuum extraction. 2) Eco-probe drill rig with 90 mm diamater rods used to advance borehole to target depth. 3) PID headspace readings taken from bag sample with MiniRAE PID calibrated to 100ppm Isobutylene.

Checked DDf

No ground water encountered

Driller

DCN

Drill Rig

Eco-probe

Started

5/03/2012

Finished 5/03/2012 Page

Date Printed: 13/08/2012

LOG OF DRILLHOLE Project

City Rail Link

Co-ordinates

(consistency, relative density, water content, plasticity, grading, etc)

GEOLOGICAL DESCRIPTION

Graphic Log

MATERIAL DESCRIPTION

Depth

PID (ppm)

Analysis

Sample ID

Casing remarks

-90Â°

Various Locations Along the CRL in Auckland

Feature

SAMPLING & TESTING

Core Loss/Lift

Drilling Method

Project number 60222458

Orientation Location

Elevation

STAINING/ ODOURS AND COMMENTS

Piezometer Construction

Auckland Transport

Groundwater

Client

BH134

HOLE IDENTIFICATION

0 - 100%

BH134_0.1-0.2*

0.8

BH134_0.5-0.6

0.4

BH134_1.0-1.1*

0.4

BH134_2.0-2.2

1.1

No staining or odours observed.

Fill. Sandy GRAVEL, dark brown. Very loose, dry. CLAY, light brown and grey with orange mottles. Firm, moist, high plasticity.

VAC EX

Grades to light brown with some grey and orange mottles, soft. ?

Silty CLAY, light brown. Very soft, moist to wet, high plasticity. BH134_3.0-3.2*

0.9

BH134_3.3-3.5

0.9

ECBF

Sonic

SILT, grey. Stiff, moist.

BH134_4.0-4.2

0.5

Grades to very stiff. SILTSTONE

4.65m: SPT 6/11/17. BH134 terminated at 4.65m

DRILLHOLE LOG ENVIRONMENTAL CRL.GPJ BASE.GDT 13/08/12

GROUNDWATER OBSERVATIONS Depth _ Reading Date

Date logged 06/03/2012 Logged MD

Checked DDf

No ground water encountered

Driller

DCN

Drill Rig

Eco-probe

Started

6/03/2012

Finished 6/03/2012 Page

Date Printed: 13/08/2012

LOG OF DRILLHOLE Project

City Rail Link

Co-ordinates

(consistency, relative density, water content, plasticity, grading, etc)

GEOLOGICAL DESCRIPTION

Graphic Log

MATERIAL DESCRIPTION

Depth

PID (ppm)

Analysis

Sample ID

Casing remarks

-90Â°

Various Locations Along the CRL in Auckland

Feature

SAMPLING & TESTING

Core Loss/Lift

Drilling Method

Project number 60222458

Orientation Location

Elevation

STAINING/ ODOURS AND COMMENTS

Piezometer Construction

Auckland Transport

Groundwater

Client

BH154

HOLE IDENTIFICATION

0 - 100%

BH154_0.2-0.3*

0.4

BH154_1.0-1.1

0.4

No staining or odours observed.

SILT with minor sand and trace fine gravel, brown with orange brown (rust) mottles. Soft, moist.

VAC EX

1.5 m: Gravel and sand cease.

0.9

BH154_3.0-3.2*

1.0

BH154_4.0-4.2

1.0

ECBF

BH154_2.0-2.2

Sonic

4.4 m: Grades to firm.

BH154_5.0-5.2

1.2

BH154_5.8-6.0

0.9

6 BH154 terminated at 6m

DRILLHOLE LOG ENVIRONMENTAL CRL.GPJ BASE.GDT 13/08/12

GROUNDWATER OBSERVATIONS Depth _ Reading Date

Date logged 07/03/2012 Logged MD

Checked DDf

No ground water encountered

Driller

DCN

Drill Rig

Eco-probe

Started

7/03/2012

Finished 7/03/2012 Page

Date Printed: 13/08/2012

LOG OF DRILLHOLE Project

City Rail Link

Co-ordinates

(consistency, relative density, water content, plasticity, grading, etc)

GEOLOGICAL DESCRIPTION

Graphic Log

MATERIAL DESCRIPTION

Depth

PID (ppm)

Analysis

Sample ID

Casing remarks

-90Â°

Various Locations Along the CRL in Auckland

Feature

SAMPLING & TESTING

Core Loss/Lift

Drilling Method

Project number 60222458

Orientation Location

Elevation

STAINING/ ODOURS AND COMMENTS

Piezometer Construction

Auckland Transport

Groundwater

Client

BH162

HOLE IDENTIFICATION

CLAY with some sand and gravel, dark grey. Soft, moist, medium plasticity.

VAC EX

BH162_0.2-0.3*

1.0

BH162_0.8-1.0

1.4

FILL

0 - 100%

No staining or odours observed.

CLAY, light brown. Soft, moist, high plasticity. 1 1.2 m: Grades to light brown with orange brown (rust) mottles. BH162_1.5-1.7*

SILT with minor clay, grey with orange brown (rust) mottles. Firm, moist.

7.2

BH162_2.3-2.5*

18.6

BH162_2.7-2.9

4.0

Sonic

2.5 m: Grades to dark grey. 3 BH162_3.3-3.5

Sandy SILT, grey. Firm, moist. Fine SAND with minor silt, dark grey. Dense, moist.

1.8

BH162 terminated at 3.5m 4

DRILLHOLE LOG ENVIRONMENTAL CRL.GPJ BASE.GDT 13/08/12

GROUNDWATER OBSERVATIONS Depth _ Reading Date

Date logged 07/03/2012 Logged MD Checked DDf

Driller

DCN

Drill Rig

Eco-probe

Started

7/03/2012

Finished 7/03/2012 Page

Date Printed: 13/08/2012

LOG OF DRILLHOLE Project

City Rail Link

Co-ordinates

(consistency, relative density, water content, plasticity, grading, etc)

GEOLOGICAL DESCRIPTION

Graphic Log

MATERIAL DESCRIPTION

Depth

PID (ppm)

Analysis

Sample ID

Casing remarks

-90Â°

Various Locations Along the CRL in Auckland

Feature

SAMPLING & TESTING

Core Loss/Lift

Drilling Method

Project number 60222458

Orientation Location

Elevation

STAINING/ ODOURS AND COMMENTS

Piezometer Construction

Auckland Transport

Groundwater

Client

BH167

HOLE IDENTIFICATION

0 - 100%

BH167_0.1-0.2*

No staining or odours observed.

Sandy GRAVEL, dark brown. Loose, moist.

1.6

SILT with basalt gravel, dark brown. Firm, moist. BH167_0.4-0.5

1.1

BH167_1.0-1.2*

1.5

FILL

VAC EX

Grades to silt, light reddish brown.

Basalt boulder. 2 SILT, light reddish brown. Firm. Basalt Boulder

BH167_3.0-3.2

0.9

BH167_3.8-4.0

0.4

SILT with minor clay, orange brown. Stiff, wet, low plasticity.

Sonic

Basalt.

5 BH167 terminated at 5m

DRILLHOLE LOG ENVIRONMENTAL CRL.GPJ BASE.GDT 13/08/12

GROUNDWATER OBSERVATIONS Depth _ Reading Date 4.38m

18/04/2012

Date logged 06/03/2012 Logged MD Checked DDf

Remarks 1) Hand cleared to 1.5 mbgl with vacuum extraction. 2) Eco-probe drill rig with 90 mm diamater rods used to advance borehole to target depth. 3) Depth to water measured from top of casing. 4) PID headspace readings taken from bag sample with MiniRAE PID calibrated to 100ppm Isobutylene.

Driller

DCN

Drill Rig

Eco-probe

Started

6/03/2012

Finished 6/03/2012 Page

Date Printed: 13/08/2012

Auckland Transport

Project

City Rail Link

Co-ordinates 1756315mE Location

NAL West - Grafton Station to Dominion Road

(consistency, relative density, water content, plasticity, grading, etc)

GEOLOGICAL DESCRIPTION

Graphic Log

MATERIAL DESCRIPTION

Depth

PID (ppm)

Analysis

Sample ID

Casing remarks

-90Â°

Feature

SAMPLING & TESTING

Core Loss/Lift

Drilling Method

Project number 60222458

5918202mN

Orientation

Elevation

STAINING/ ODOURS AND COMMENTS

Piezometer Construction

Client

TP101

HOLE IDENTIFICATION

Groundwater

LOG OF DRILLHOLE

0 - 100%

No odours or staining

Cobbles - clean angular rail ballast

0.5

Sandy SILT, brown, firable, dry, low plasticity

Gravelly sandy SILT, with very minor clay fraction, mottled yellow orange brown, soft, dry, low plasticity, gravels and organics present

TP101_0.5-0.6

FILL

TP101_0.1

0.5

ECBF

Gravelly SILT, brown, dry, friable, non plastic. Minor gravel fraction with cobbles more prevelent with depth

TP101_1.0

0.4

DRILLHOLE LOG ENVIRONMENTAL COPY OF CRL-NP.GPJ BASE.GDT 13/08/12

Bedrock - Refusal at 1.2m TP101 terminated at 1.2m Unable to advance as too difficult to excavate

GROUNDWATER OBSERVATIONS Depth _ Reading Date

Date logged 10/03/2012 Logged NJP Checked DDf

Remarks 1) PID headspace readings taken from bag samples with MiniRAE PID calibrated to 100 ppm Isobutylene. 2) Basalt Rock at 1.2m No ground water encountered

Driller Drill Rig Started

Abernethy Civil Machine Excavator 10/03/2012

Finished 10/03/2012 Page

Date Printed: 13/08/2012

Auckland Transport

Project

City Rail Link

Co-ordinates 1756490mE Location

NAL West - Grafton Station to Dominion Road

(consistency, relative density, water content, plasticity, grading, etc)

GEOLOGICAL DESCRIPTION

Graphic Log

MATERIAL DESCRIPTION

Depth

PID (ppm)

Analysis

Sample ID

Casing remarks

-90Â°

Feature

SAMPLING & TESTING

Core Loss/Lift

Drilling Method

Project number 60222458

5918272mN

Orientation

Elevation

STAINING/ ODOURS AND COMMENTS

Piezometer Construction

Client

TP102

HOLE IDENTIFICATION

Groundwater

LOG OF DRILLHOLE

0 - 100%

TP102_0.1-0.2

0.0

TP102_0.5-0.7

0.0

FILL

Gravelly FILL

No odours or staining

Gravelly SILT, dark brown, soft, friable, dry, low plasticity with trace organics (gravels and wood)

DRILLHOLE LOG ENVIRONMENTAL COPY OF CRL-NP.GPJ BASE.GDT 13/08/12

grades to Clayey SILT, brown, moist, soft, low plasticity with trace gravels, boulders and cobbles.

0.3

TP102_1.5

0.3

TP102_2.0

0.4

TP102_2.5

0.0

ECBF

TP102_1.0

grades to Clayey SILT, brown, moist, soft, low plasticity with trace gravels, cobbles and pebbles.

Clayey SILT with minor sand fraction, redish brown, very moist, low plasticity with minor gravels and cobbles. TP102_2.7

0.0

TP102 terminated at 2.8m Unable to advance as too difficult to excavate 3

GROUNDWATER OBSERVATIONS Depth _ Reading Date

Date logged 10/03/2012 Logged NJP Checked DDf

Remarks 1) PID headspace readings taken from bag samples with MiniRAE PID calibrated to 100 ppm Isobutylene.

Driller

No ground water encountered

Started

Drill Rig

Abernethy Civil Machine Excavator 10/03/2012

Finished 10/03/2012 Page

Date Printed: 13/08/2012