The

PAPAKURA TO DRURY SOUTH STAGE 1B1

Contaminated Land Assessment Revision No: B Published Date: 23/03/2021 Author: R. Colivin, S. Ensoll Copyright information

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NZ Transport Agency June 2021

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This document is available on the NZ Transport Agency’s website at http://www.nzta.govt.nz Document Control

Rev No Date Description Author Reviewer Verifier Approver

A 31/08/2020 Draft for comment Rebecca Colvin Tim Dee Helen Davies -

B 23/03/2021 Final for comment Sarah Ensoll - Richard Griffiths Jon Hind

This document remains the property of Waka Kotahi NZTA, Papakura to Drury South (P2DS) Project. Its contents are confidential and shall not be reproduced, destroyed, or given away without the express, written permission of Waka Kotahi NZTA, Papakura to Drury South (P2DS) Project. The electronic version of this document in Geodocs on the designated server(s) is the Master Copy and is a controlled document. Unless specifically noted thereon, other copies of this document are uncontrolled.

CONTENTS

1 Introduction ...... 1

1.1 Papakura to Bombay Project Background ...... 1 1.2 Stage 1B1 Papakura to Drury Interchange ...... 1 1.3 Purpose of this Report ...... 2 1.4 Supporting Documents ...... 3 1.4.1 Land Contamination Reports ...... 3 1.4.2 Other Reports ...... 3 1.5 Assessment Requirements and Methodology ...... 4

2 Existing Environment ...... 5

3 Assessment of Effects ...... 6

3.1 Construction Effects ...... 6 3.1.1 Adverse Construction Effects ...... 6 3.1.2 Positive Construction Effects ...... 6 3.2 Operational Effects ...... 7 3.2.1 Adverse Operational Effects ...... 7 3.3 Assessment ...... 7

4 Recommendations ...... 10

4.1 Contaminated Site Management Plan ...... 10 4.1.1 Engineering Controls ...... 10 4.2 Detailed Site Investigation ...... 10 4.3 Summary of Mitigation Measures ...... 11

5 Conclusion ...... 12

Appendices

Appendix A – Preliminary Site Investigation

Appendix B – Draft Contamination Site Management Plan

Appendix C – Assessment Requirements and Methodology

Appendix D – Contaminated Land Drawings

Figures

Figure 1-1 Approximate extents of P2DS. Focus of this Report is Stage 1B1. Source: Aurecon NZ Ltd

Tables

Table 1-1 Summary of Contaminated Land Reports Completed to Date Table 3-1 Summary of Effects of Proposed Construction Activities or Operational Activities (post- construction) Table 4-1 Summary of Mitigation Measures

Abbreviations

Abbreviation Term

AEE Assessment of Environmental Effects

AS/NZS Australia/New Zealand Standard

AUP Auckland Unitary Plan (Operative in Part)

BPO Best Practice Option

CLMG Contaminated Land Management Guidelines

COPC Contaminants of potential concern

Council Auckland Council

CSMP Contaminated Site Management Plan

CNVMP Construction Noise and Vibration Management Plan

DSI Detailed Site Investigation

ESCP Erosion Sediment Control Plan

HAIL Hazardous Industries and Activities List

HNZPT Act Heritage New Zealand Pouhere Taonga Act 2014

IANZ International Accreditation New Zealand

kv Kilovolt

MfE Ministry for the Environment

NIMT North Island Main Trunk

NZUP New Zealand Upgrades Project

OCP Organochlorine pesticides

P2B SH1 Upgrades Project between Papakura to Bombay

PC22 Plan Change 22 to Auckland Unitary Plan

PSI Preliminary Site Investigation

RMA Resource Management Act 1991

SCI Southern Corridor Improvements

SGA Supporting Growth Alliance

SCPA Sediment Control Protection Area

SGA Supporting Growth Alliance

SGP Supporting Growth Program

SH1 Stage Highway 1 Motorway, the Southern Motorway

SH22 State Highway 22 Motorway, Great South Road

SPR Source-pathway-receptor

SSESCP Site Specific Erosion and Sediment Control Plan

SUP Shared Use Path

SQEP Suitably Qualified and Experienced Practitioner

TTM Temporary Traffic Management

Waka Kotahi Waka Kotahi NZ Transport Agency

1 INTRODUCTION

1.1 Papakura to Bombay Project Background This Report supports the application lodged by Waka Kotahi New Zealand Transport Agency (Waka Kotahi) under the Covid 19 Recovery (Fast Track Consenting) Act 2020 (FTA) for Stage 1B1 of the Papakura to Drury South Project, a listed project under the FTA. For clarity and by way of summary we note that: The Papakura to Drury South Project was originally part of a larger project, called the Papakura to Bombay Project. Through the FTA, part of the Papakura to Bombay Project, being the Papakura to Drury South section, was included as a listed project under that Act. Waka Kotahi has broken the listed Papakura to Drury South project into further stages, with this application relating to Stage 1B1 only. Stage 1B1 is referred to as the Project throughout this document. Further discussion of the different stages of the Papakura to Drury South Project is contained in the, Assessment of Effects on the Environment (AEE), Design and Construction Report (Appendix C to the AEE) and legal submissions supporting this application.

1.2 Stage 1B1 Papakura to Drury Interchange As referred to in the AEE the geographic location of the Project is between the Papakura Interchange to south of the Drury Interchange (Quarry Road), shown in Figure 1-1. The works will include infrastructure upgrades at the Papakura Interchange, the Drury Interchange, and replacements of the SH1 Bremner Road Overbridge and Jesmond Bridge (over Ngakoroa Stream). Additionally, it is also proposed to establish a shared use path (SUP) from the Papakura Interchange to north of the Otūwairoa Bridges, and from Bremner Road to south of the Drury Interchange. A full description of the Project works is contained in the AEE and Design and Construction Report (Appendix C to the AEE), supporting the application for resource consents and Notices of Requirement (NOR).

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Figure 1-1 Approximate extents of P2DS. Focus of this Report is Stage 1B1. Source: Aurecon NZ Ltd

1.3 Purpose of this Report This report on contaminated land forms part of a suite of technical reports prepared the Project. Its purpose is to inform the AEE for:

◼ Resource consents for regional plan matters in the Auckland Unitary Plan (Operative in Part) 2016 (AUP).

◼ Land use matters under the National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health (NES Contaminated Soil). Contamination is addressed in the AUP as a regional matter, rather than a district plan matter, so the application for a NOR is not required to address contamination. This assessment is therefore restricted to an assessment of the regional plan matters relating to contamination and land use matters under the NES Contaminated Soil, which are relevant to the resource consent application. This report assesses the effects of land disturbing construction activities in areas of potentially contaminated land in Stage 1B1 and recommends mitigation and management measures to address potential adverse effects. The purpose of this report is to:

◼ Identify the existing contaminated land environment within the Project area.

◼ Assess the effects of land disturbing construction activities within the Project area.

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◼ Recommend mitigation and management measures to address potential adverse effects. In assessing the effects related to potentially contaminated land, the main elements associated with the proposed works that are assessed in this report are:

◼ During the construction phase, the effects of: − Land disturbing activities and potential contaminated discharges on human health and the environment. Contaminated land does not present a risk of ongoing adverse effects once the Project is operational.

1.4 Supporting Documents Where critical to this assessment, information has been summarised from the documents listed below.

1.4.1 Land Contamination Reports The following contamination reporting has been prepared to aid with this assessment and this report should be read in conjunction with them. Report 1, Preliminary Site Investigation (PSI), is included as Appendix A and Report 4, draft Contamination Site Management Plan (CSMP), is included as Appendix B. 1. PSI; Aurecon, 2019, Preliminary Site Investigation, Stage 1 Papakura to Bombay, Ref: 506207-0310-REP- KF-0035. 2. DSI; Aurecon, 2020, Detailed Site Investigation, Stage 1 Papakura to Bombay, Ref: 506207-0310-REP- KF0042. 3. CSMP, Aurecon, 2019, Contaminated Site Management Plan, Stage 1A Papakura to Bombay, Ref: 506207-0391-REP-KF-0020. 4. CSMP, Aurecon 2020, Contaminated Site Management Plan, Stage 1B1 Papakura to Bombay, Ref: 506207-0490-REP-KF-0078. Table 1-1 below indicates how the reports completed to date align to Stage 1B1. Table 1-1 Summary of Contaminated Land Reports Completed to Date

Project Area Report

Stage 1 (A, B1 & B2) 1 (PSI),4 (CSMP)

Stage 1B1 (partial) 2 (DSI), 3 (CSMP) CH 9500 – CH14000 (north of Drury Interchange only)

1.4.2 Other Reports The following documents have been prepared to aid with this assessment and this report should be read in conjunction with them. 1. PGAR, AECOM 2017, Preliminary Geotechnical Assessment Report, SH1 South Papakura to Bombay, Ref: 60545688. 2. GFR, Aurecon, 2020, Geotechnical Factual Report, Stage 1B Papakura to Bombay, Ref: 506207-0410- REP-GG-0045. 3. Geological Model, Aurecon 2020, SH1 Papakura to Bombay Stage 1 Geological Model Technical Note, Ref: 506270-0310-NOT-GG-0027.

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4. Design drawings; General Arrangements Plans (Ref: 506207-0420-DRG-RR-0100 – 0164) and Erosion Sediment Control Plans (Ref: 506207-0450-DRG-NE-5101 – 5164) contained in Appendix F of the AEE.

1.5 Assessment Requirements and Methodology Contaminated land is reported in New Zealand following a methodology outlined in the Ministry for the Environment (MfE) Contaminated Land Management Guidelines (CLMG) No 1 Reporting on Contaminated Sites in New Zealand (MfE 2011). Assessment under the CLMG is required to support resource consent applications under the NES Contaminated Soil, and territorial authority and regional council plans. For the Project, the AUP is the relevant local authority plan. The purpose of the assessment methodology is to identify where pieces of land (NES Contaminated Soil) and areas of soil contamination (AUP) may be disturbed by the proposed works. This is then used to inform the requirement for resource consent. Any identified disturbance will then be considered to determine the nature of the potential effects. Where such effects are negative, the proposed mitigation measures identified, primarily by the CSMP, are then considered to determine the overall nature of the effects of the works such that a decision on the activity status and suitability of mitigation can be determined. Further detail on the Assessment Requirements and Methodology are provided in Appendix C. This includes a summary of the PSI, DSI and recommendations for areas requiring further investigation.

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2 EXISTING ENVIRONMENT Below is a high-level overview of the existing environment. Further detail is provided in the PSI at Appendies A and the assessment in Appendix C. The study area (area CH 9500 – CH14000 (north of Drury Interchange only)) comprises an approximately 7km section of a predominantly four-lane highway. This stretch of SH1 includes the following dominant features: Papakura interchange (Beach Road), Park Estate bridge, BP Papakura Service Centre, SH1 Bremner Road Overbridge and the Drury interchange. The highway within the study area has been worked flat, and generally comprises the paved carriageway and shoulder, roadside vegetation and grassed roadside berms (or verges) where informal side water channels for drainage are located. The highway is underlain by fill of varying thicknesses, generally comprised of reworked natural soils, described as brown and grey, silts and clays, approximately 1-2m thick. Deeper fill has been encountered near bridges and around the BP Papakura Service Centre. Beneath the fill, Tauranga group deposits are present. In the northern part of the study area Kerikeri Volcanic Group (SAVF) is interfingered with the Tauranga Group. The Tauranga Group is the predominant subsurface material across the area and comprises fine grained clay silt sediments, pumicious sands and local peat and organic fine soils. Shelly sandstone Kaawa Formation is present below Tauranga Group. Shallow, discontinuous pockets of groundwater are present across the study area and may be consistent with surface water levels. Flow direction within and between shallow groundwater is not understood but is considered to be highly dependent on the presence / absence of granular soils, surface water features, and drainage features / underground services. The shallowest potentially continuous groundwater body or aquifer has been encountered within the Tauranga Group. Locally Tauranga Group contains thin sandy layers and lenses which may act as dominant pathways for shallow lateral groundwater migration. Generally, a significant thickness of cohesive deposits (Tauranga Group) overlay the Kaawa Formation, generally present at depth. SH1 is crossed by culverts which flow from east to west and discharge into to a series of unnamed watercourses/drainage channels that ultimately discharge to the Drury Creek to the west. Drury Creek flows into Pahurehure Inlet, which is located approximately 1 km north of the study area and feeds into Manukau Harbour. Further south, SH1 passes over Otūwairoa (Slippery Creek) Bridge. South of Otūwairoa (Slippery Creek) there are a number of culverts which flow east to west discharging into the CMA extents of the Ngakoroa Stream (approximately 200 m west of the highway). Hingaia Stream is present east of the study area, and flows through Karaka Reserve, approximately 50 m east of Drury interchange. Groundwater flow direction is likely to be towards local surface water bodies, draining into Manukau Harbour in the north west. Groundwater is expected to vary seasonally and following rainfall events

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3 ASSESSMENT OF EFFECTS A detailed discussion on potential interaction or pollutant linkage between proposed construction activities, contamination sources and relevant contaminants of potential concern (COPC) is presented in Appendix C. A summary is presented below. For the purposes of this assessment the following are considered broad definitions for minor, less than minor and more than minor effects from the potential pollutant linkages identified.

◼ A less than minor effect is where the potential pollutant linkages would result in exposure of human health or ecological receptors to concentrations of hazardous substances in soil or water below background guidance criteria. No mitigation would be required.

◼ A minor effect is where the potential pollutant linkages would result in exposure of human health or ecological receptors to concentrations of hazardous substances in soil or water below risk based criteria. Management controls would need to be implemented to manage this effect.

◼ A more than minor effect is where there is a complete potential pollutant linkage due to exposure of human health or ecological receptors to hazardous substances in soil or water at concentrations in exceedance of generic health or environmental risk based criteria. Engineering controls or remediation may need to be implemented to manage this effect.

3.1 Construction Effects

3.1.1 Adverse Construction Effects Adverse effects may occur when there is a potentially complete linkage between a contamination source, pathway and receptor/s. During construction there is potential for such linkages to be created through soil disturbance and surface seal removal. Pathways potentially created during construction works may include:

◼ Inhalation exposure to workers and members of the public.

◼ Ingestion and dermal contact exposure to workers and neighbouring site users.

◼ Migration of contaminants via stormwater.

◼ Discharge to surface water.

◼ Passive discharge to groundwater, and subsequent discharge to surface water, where applicable.

◼ Accumulation in impacted sediment.

◼ Effects on amenity values (i.e. odours).

◼ Vegetation impacts.

◼ Creation of acid sulphate soil drainage conditions. Effects during construction will be generally transient, though it should be noted that for some contaminants, additional exposure can lead to irreversible impact.

3.1.2 Positive Construction Effects Positive environmental effects of the proposed works across the Project have been identified. These include:

◼ Characterisation of areas of potentially contaminated land which would otherwise not have been assessed.

◼ Identification of areas of historical contamination previously unknown, allowing controls to be implemented to protect human health and the environment.

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◼ The possible removal and/or encapsulation of contaminated materials, from the proposed development areas within the study area, thus reducing the ongoing potential risk. The approach proposed by Waka Kotahi would seek to limit off-site transport and disposal of cut material encouraging more sustainable practices.

3.2 Operational Effects

3.2.1 Adverse Operational Effects Adverse effects may occur when there is a pollutant linkage between the source, pathway, and receptor. During operation, any residual contamination is likely to be sealed beneath the highway or landscaped features. As such, no linkages to human health are considered likely where the study area remains undisturbed. However, there is potential for linkages to be created if contamination is disturbed during routine maintenance, or if there are extreme weather events. Some disturbance activities in which pathways may be created during operation include:

◼ Trenching for installation of underground services.

◼ Vertical or horizontal drilling for small scale civil works or alterations.

◼ Earthworks for landscaping. Adverse effects associated with maintenance activities involving soil disturbance may include:

◼ Inhalation exposure to workers and members of the public.

◼ Discharge to stormwater of impacted material from unauthorised soil management and uncontrolled waste disposal.

◼ Passive discharge to surface water, groundwater or air from unauthorised soil management and uncontrolled waste disposal.

◼ Accumulation of impacted sediment from unauthorised soil management and uncontrolled waste disposal.

◼ Impacts on amenity values and ecology or vegetation impacts from unauthorised soil management and uncontrolled waste disposal.

◼ Significant weather events resulting in overflow of stormwater or discharge into surface water or groundwater, which could cause a pathway to surface water receptors.

3.3 Assessment Based on a review of the proposed activities (both construction and operation), Table 3-1 outlines the potentially complete linkages within or adjacent to the study area and their anticipated effects on the environment or human health under certain conditions, and without mitigation in place. The chainages referred to in Table 3-1 are shown on the General Arrangement Plans (506207-0420-DRG-RR-0100 – 0164) and Erosion Sediment Control Plans (506207-0450-DRG-NE-5101 – 5164) in Appendix F of the AEE.

Table 3-1 Summary of Effects of Proposed Construction Activities or Operational Activities (post-construction)

Location / Chainage HAIL Activity / Activity Anticipated Effect without Mitigation AUP E30 Consideration

10R Karaka Road - G5 (HAIL) and Operational Activity - significant Discharge to Hingaia Stream; has the Karaka Reserve AUP E30 rainfall event resulting in potential to be more than minor. stormwater overflows (Further details in Section 3.2.1)

10R Karaka Road - G5 (HAIL) and Construction Activity - widening of Discharge to Hingaia Stream; has the Karaka Reserve AUP E30 the carriageway including potential to be more than minor. embankments, Drury interchange

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upgrades, stormwater upgrades, Odour issues and emission of gas have utilities upgrades, and retaining the potential to be more than minor. walls. (Further details in Section 3.2.1). Other adverse effects as detailed in Section 3.1 anticipated to have a minor impact

190 Flanagan Road D5 (HAIL) and As above As detailed in Section 3.1– anticipated AUP E30 to have a minor impact but effects could potentially be more than minor

SH1 designation NB & AUP E30 As above As detailed in Section 3.1–anticipated SB – Drury Interchange (Filling) to have less than minor impact but CH14000-14900 could be minor effects

SH1 designation NB & AUP E30 (Side As above SB - CH14000-14900 water (Drury Interchange), CH channels) 10100 SB – 107500 SB

SH1 designation - CH AUP E30 As above 13960 SB (Metallic paints from pylons)

31 Bremner Road F4 (HAIL) and As above As detailed in Section 3.1– anticipated AUP E30 to have a minor impact

115 Park Estate Road, A10 (HAIL) and SUP, Drury interchange upgrades 190 Flanagan Road, 68 AUP E30 Pitt Road

18- 20 Victoria Street G5 (HAIL) and SUP AUP E30

20 Firth Street A4 (HAIL) and Within 50m of the activities; As detailed in Section 3.1–anticipated AUP E30 widening of the carriageway to have less than minor impact given including embankments, distance from the highway stormwater upgrades, Drury interchange upgrades,

20 Firth Street, 60 A10 (HAIL) and As above Mercer Street, 190 AUP E30 Flanagan Road, 68 Pitt Road

10 Firth Street, 301-305 E1 (HAIL) As above Great South Road

30 Mercer Street, 87 F4 (HAIL) and As above Creek Street AUP E30

30 Mercer Street G2 (HAIL) and As above AUP E30

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Further information on potential contamination sources and relevant COPC within the study is are summarised in Table 4-1 in Appendix C. These areas are shown on Drawing 506207-0450-DRG-KF-1581-1584 in Appendix D. Implementation of a CSMP will manage and / or mitigate the effects detailed above. This draft CSMP is included in Appendix B of this report and includes controls and mitigation measures required to be implemented during construction activities to protect human health and the environment from the potential effects identified. The CSMP is a draft document should be updated if further DSI (i.e Drury Interchange) is undertaken, and if realised site conditions differ during earthworks. Further detail regarding the draft CSMP is also provided in section 4.2 below. No historic landfill or contaminated sites exist in proximity to the coastal environment where Project works are proposed. No remediation of historic landfills or contaminated sites is proposed as part of the Project works. Construction activities will be managed through the implementation of the ESCP, SSESCP and CSMP to appropriately manage construction discharges.

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4 RECOMMENDATIONS Based on the consideration of the documentation listed in section 1 and the assessment of potential adverse effects on contamination identified in section 3, the following mitigation and management measures are recommended.

4.1 Contaminated Site Management Plan The draft CSMP in Appendix B will be implemented to mitigate and manage effects, and provides the following with respect to the completion of land disturbance activities on contaminated sites:

◼ Project background, summary of proposed works, areas of affected materials and summary of onsite hazards, and scope of report.

◼ Contact information and summary of specified roles for Client, Consultant and Contractors engaged to work on the Project.

◼ Site controls and procedures.

◼ Protocols for unexpected contamination discovery.

◼ Health and safety protection measures.

◼ Environmental management procedures.

◼ Testing requirements for imported fill, waste disposal and groundwater. The draft CSMP will be updated to include a summary of the additional DSI findings, if undertaken. Prior to commencement of the Project works, the CSMP will be updated by the Principal Contractor’s suitably qualified and experienced practitioner (SQEP), and reviewed and certified by Council to specify:

◼ Responsible parties, their roles and contact details.

◼ Finalised Project extents, Project access / egress points and laydown areas.

◼ Methodologies for additional investigation or sampling (if necessary).

◼ Reporting requirements. The CSMP will be implemented by the Principal Contractor through the appointed subcontractors. If unexpected contamination is identified during the construction phase, it will be managed using the advice of a SQEP. On completion of the works, all contamination will have either been removed or will be in a managed state, e.g. capped to provide a barrier between the contamination and all identified receptors.

4.1.1 Engineering Controls Where effects are more than minor, engineering controls may be required to mitigate the effect. Further detail regarding these mitigation measures is provided in Table 4-1. These controls are also detailed in the CSMP.

4.2 Detailed Site Investigation Additional DSI around Drury Interchange would provide more certainty around the type of mitigation / management measures required in the CSMP. DSI would assist in determining the risk, and thus the effect from potential pollutant linkages. Where DSI is not completed, the most conservative management measures have been provided for in the CSMP. Further detail is provided in Table 4-1. If undertaken, additional DSI should incorporate the following key elements:

◼ Targeted sampling programme, based on primary areas of disturbance (cut and fill).

◼ Analysis of soil samples based on locations where potentially contaminating activities/land use have occurred.

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The results of the DSI can be used to:

◼ Further characterise likely contaminant conditions of spoil materials scheduled for land disturbance/earthworks as part of the Project.

◼ Inform the development of technical sections (mitigation and management measures) of the CSMP and other management plans.

◼ Provide more certainty around soil handling and disposal costs, with advice around: − Spoil materials to be re-used (i.e. cut-to-fill activities). − Spoil materials to be disposed of off-site as part of the development works (i.e. spoil materials which may be geotechnically unsuitable for re-use within the Project area).

4.3 Summary of Mitigation Measures Table 4-1 summarises the proposed mitigation measures for areas of potential effects that are considered to be minor or more than minor.

Table 4-1 Summary of Mitigation Measures

Location / Chainage Source Activity Unmitigated Effect Mitigation Activity Anticipated Effect

10R Karaka Road - Filling with unknown Anticipated to have a Implementation of Less than minor Karaka Reserve material / waste minor impact. CSMP + disposal to land Operational effects – Under extreme landfill capping. weather events or Construction effects - during soil Improved Erosion and disturbance activities Sediment Control measures, provision discharge to Hingaia for only working in dry Stream / odour and weather, sheet pile gas emissions; have protection of the potential to be watercourse, gas / more than minor. odour protection measures.

190 Flanagan Road Engineering Anticipated to have a Implementation of Less than minor workshops minor impact CSMP

31 Bremner Road Vehicle storage Implementation of Less than minor CSMP

115 Park Estate Road Bulk storage or use of Implementation of Less than minor 190 Flanagan Road, pesticides CSMP 68 Pitt Road

18- 20 Victoria Street Filling with unknown Implementation of Less than minor material / waste CSMP disposal to land

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5 CONCLUSION This assessment of land contamination effects has identified potential pollutant linkages within the Project area. Effects associated with these linkages have been assessed. Potential positive effects have been identified, and include:

◼ Characterisation of areas of potentially contaminated land which would otherwise not have been assessed.

◼ Identification of areas of historical contamination previously unknown, allowing controls to be implemented to protect human health and the environment.

◼ The possible removal and/or encapsulation of contaminated materials thus reducing the ongoing potential risk. The approach proposed by Waka Kotahi would seek to limit off-site transport and disposal of cut material and encourage more sustainable practices. Potential adverse effects could arise from:

◼ Human or environmental exposure to the identified contaminants of concern during excavation activities.

◼ Stormwater runoff carrying contaminated sediment / stormwater to off-site areas e.g. Hingaia Stream; and/or

◼ Members of the public being exposed to contaminants carried in airborne dust / gas and odour. A draft CSMP has been completed for the Project, and outlines mitigation and management measures to be implemented during the construction phase. Measures proposed in the draft CSMP will address The draft CSMP should be updated if further DSI is completed by the Principal Contractor prior to commencement of Project works. Based on the assessment undertaken the proposed construction works may cause temporary effects, as a result of temporary discharges to Hingaia Stream during fill disturbance. Proposed mitigation activities and management of stormwater, sediment and waste (i.e. implementation of CSMP measures and ESC measures) will likely enable the health and wellbeing of freshwater bodies to be maintained.

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APPENDICES

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APPENDIX A – PRELIMINARY SITE INVESTIGATION Document Name Preliminary Site Investigation, Stage 1 Papakura to Bombay Document Code 506207-0310-REP-KF-0035 Document Control

Rev No Date Description Author Reviewer Verifier Approver

A 10/12/2019 Draft for client Rebecca Colvin Tim Dee Helen Davies - comment

B 18/12/2019 Final Rebecca Colvin - Helen Davies -

C 23/03/2021 Updates made to Sarah Ensoll - Richard Griffiths Jon Hind final version

EXECUTIVE SUMMARY Aurecon has been engaged by Waka Kotahi NZ Transport Agency (the Transport Agency) to prepare a Preliminary Site Investigation (PSI) of the Stage 1 area of the Papakura to Bombay project. The study area includes the road designation within Stage 1 (incorporating Stages 1B1 and 1B2) plus a 50 m buffer from the edge of the road seal. The study area comprises an approximately 7 km section of a predominantly four-lane highway between Papakura and Drury interchange. This stretch of highway includes the following dominant features: Papakura Interchange (Beach Road), Park Estate bridge, BP Papakura Service Centre, Otūwairoa (Slippery Creek) Bridge, SH1 Bremner Road Overbridge and Drury Interchange. Based on the findings of the PSI, potential contamination source areas have been identified within the study area. Within the designation itself several potentially contaminating source areas have been identified associated with highway construction and infrastructure development; these include historical road run-off into storm water side water channels; bulk filling associated with highway construction and overhead electricity pylons. Beyond the designation, source areas include areas of uncontrolled fill, service stations, areas of horticulture, and various commercial and industrial activities including cement manufacturing, commercial printing and vehicle workshops. Several of these areas are considered a priority for testing, as they are considered most likely to have resulted in impact to the neighbouring designation due to the nature of the contaminants and the scale of the potentially contaminating activities. It should be noted that many of these activities are not included on the Hazardous Activities and Industries List (HAIL) and while they pose a risk to construction through increased disposal costs and soil management requirements do not necessarily pose a risk to human health or the environment. As part of the investigation, a conceptual site model was completed, and a preliminary risk assessment was undertaken based on the available information. Based on this risk assessment it is considered likely that the site is suitable for the proposed land use as a highway corridor. However, controls will need to be implemented during construction to appropriately manage risks to construction workers, the environment and public health. This report meets the definition of a PSI detailed within the Resource Management (National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health) Regulations 2011.

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Recommendations Land contamination may affect management of the works associated with the project. Advice from the project planner should be sought to determine planning considerations for the project. The project is likely to disturb ground containing elevated concentrations of contaminants as described by the Auckland Unitary Plan, Chapter E30. It is recommended that prior to the proposed upgrade works within the Stage 1 area, intrusive investigations are conducted to better understand the contamination risk profile. Increased understanding of soil conditions is likely to minimise programme delays and associated costs. Potential acid generating geology is anticipated within the study area. A design specific assessment should be undertaken to inform construction methodology and appropriate materials selection. The presence of contaminated material may have implications for off-site disposal of soil. Additionally, health, safety, cost and programme risks associated with handling contaminated material can be reduced through completion of further investigations to characterise soil conditions in advance of earthworks and construction commencing. The outcome of these investigations will inform materials management, health and safety requirements during construction activities, and whether any remedial activities are required to address contamination. There is potential that shallow groundwater may be affected by contamination within the proposed route. Any areas of planned dewatering should be clearly identified and where they are close to identified groundwater risk they should be investigated to better inform groundwater management practices. If in the event further information regarding the history of the site becomes available, or evidence of contamination is determined on site during earthworks, a SQEP should be consulted for further advice.

1 INTRODUCTION

1.1 Background This Report supports the application lodged by Waka Kotahi New Zealand Transport Agency (Waka Kotahi) under the Covid 19 Recovery (Fast Track Consenting) Act 2020 (FTA) for Stage 1B1 of the Papakura to Drury South Project, a listed project under the FTA. For clarity and by way of summary we note that:

◼ The Papakura to Drury South Project was originally part of a larger project, called the Papakura to Bombay Project.

◼ Through the FTA, part of the Papakura to Bombay Project, being the Papakura to Drury South section, was included as a listed project under that Act.

◼ Waka Kotahi has broken the listed Papakura to Drury South project into further stages. Further discussion of the different stages of the Papakura to Drury South Project is contained in the, Assessment of Effects on the Environment (AEE), Design and Construction Report (Appendix C to the AEE) and legal submissions supporting this application. The P2B project is intended to be delivered in five stages consisting of Stage 1A, Stage 1B1, Stage 1B2, Stage 2 and Stage 3. Stage 1A and Stage 1B geographically overlap; their combined extent is shown in Figure 1-1. This report addresses all sub-stages of Stage 1 of the Papakura to Bombay Project.

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Figure 1-1 Approximate Extents of the Papakura to Bombay Project (Basemap: Auckland Council GeoMaps)

1.2 Stage 1 (Stage 1A and Stage 1B) Stage 1 is approximately 7 km in length, as shown in Figure 1-2. It spans the distance between Papakura and Drury interchange. The site comprises the existing road set within a topography of rolling hills, retaining the original gentle slopes of the Manukau Lowlands. The construction of Stage 1A will consist of permanent and temporary works, with permanent works covering the distance between the Papakura Interchange and Otūwairoa (Slippery Creek) Bridge, and temporary works covering the distance between (and including) Otūwairoa (Slippery Creek) Bridge and Drury. A brief description of the permanent works for Stage 1A are as follows:

◼ Modifications to the existing Papakura Interchange existing southbound off and on ramps.

◼ The provision of three, 3.5m traffic lanes in both the northbound and southbound directions (an addition of one extra lane in each direction) and 4.0m hard shoulders (with the ability to be utilised as a bus lane).

◼ Replacing the existing grass median with a fully paved median comprising 2.25m shoulders and a 1.0m high median barrier1.

1 Test Level – 5 F-Shape median barrier, up to 1.07 metres high, Appendix B of the Agency’s Bridge manual SP/M/022.

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◼ Stormwater works including the replacement and upgrading of culverts, and the installation of rock ripraps, formalising and upgrading the existing swale network, undertaking planting to create treatment and attenuation swales, and the installation of proprietary devices.

◼ The replacement of the Park Estate Road Bridge. A brief description of the temporary works for Stage 1A are as follows:

◼ Establish three, 3.25 – 3.5m southbound and northbound lanes (one additional lane in either direction) at a slightly reduced width to cross the existing Otūwairoa (Slippery Creek) Bridge, continuing to Drury Interchange.

◼ Stormwater works including the upgrading of existing swales and rejuvenating the existing filter strip in the central median. There are overlaps between Stage 1A and Stage 1B, which are shown in Figure 1-2 below. The temporary works between Otūwairoa (Slippery Creek) Bridge and Drury Interchange for Stage 1A are being constructed to provide for an efficient transition for traffic into the construction area to reduce journey time delays. Stage 1B will revisit the temporary works area and implement a permanent design solution, which will include the replacement of Otūwairoa (Slippery Creek) Bridge. Further detail on the Stage 1A works and the existing environment is contained in sections 3 and 4 of the Assessment of Effects on the Environment (AEE), respectively. Construction of part of Stage 1B may extend beyond the designation. This area is highlighted yellow on Figure 1-2 (north bound south between (just south of) Papakura interchange and Drury interchange, and south bound between BP Service Centre and Drury interchange). The proposed upgrades are expected to involve ground disturbance through the following activities; earthworks associated with retaining walls, ground improvements, piling (e.g. Park Estate Bridge), swales and culverts upgrades, and utility modifications. Embankment fills using imported engineered hardfill, potentially some site won material and cut slopes into existing fill and Tauranga Group deposits are planned for both the northern and southern alignment widening works.

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Figure 1-2 Approximate Extents of Stage 1A (permanent and temporary works) and Stage 1B (Basemap: Auckland Council GeoMaps)

1.3 Purpose of this report This report has been prepared with reference to the Ministry for the Environment’s Contaminated Land Management Guidelines No. 1: Reporting on Contaminated Sites in New Zealand (2011). This report is limited to Stage 1, which is represented by Figure 1-2 above. The study area (“the site”) is shown on Drawing 506207-0310-DRG-GG-2301-04 included in Attachment 1 PSI Drawings. The study area has been defined as the SH1 designation within the Stage 1 area, including properties within 50 m of the edge of the current road seal. The General Arrangements Plans (Ref: 506207-0350-DRG-RR-0100-0116A) are included in Appendix E of the AEE. The General Arrangement Plans demark chainage (CH) extending from CH 9000 to CH 14054 (Stage 1), which is referenced through this assessment when describing locations along the alignment. Where the assessment goes beyond the Stage 1 chainage (e.g. Drury interchange), Stage 2 chainage has been used (CH 100 to CH 400). Chainage is generally described as either northbound (NB) or southbound (SB).

1.4 Previous Investigations A PSI has been completed by AECOM2 for the wider P2B site (Stages 1-3) to inform the business case. The AECOM PSI has been used to inform this report. Further details are included in Section 3.7.1. AECOM list key data gaps in Section 5.4 of their report as follows:

2 AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay Widening, Ref: 60545688

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◼ AC was contacted on numerous occasions with respect to the provision of available records of consents, permits and environmental incidents relating to contaminated land, landfills, air discharges and industrial trade processes for approximately 50 m on either side of the project area. This information was not provided by AC and has not been included in this PSI report and represents a key data gap.

◼ Composition and origin of fill material within the project corridor has not previously been characterised.

◼ No information is available on the likely contaminants within the soil on the grass verges of the existing SH1.Contaminants of concern may include metals (predominantly lead, copper, and zinc) from motorway road use (1960s to present).

◼ Depth of likely impact to sediments in the vicinity of the Ngakoroa Stream.

◼ Assessment for the acid generating potential of sediments in the Ngakoroa Stream have not been characterised (acid sulphate soils).”

1.5 Objectives This report documents the findings of Aurecon’s desktop investigation and presents our interpretation of conditions, with specific recommendations made in respect of the suitability of the study area for future development, as proposed. This PSI has been completed to present the history of the study area, identify potential contamination sources that could impact on the proposed development, and determine what potential risk, if any, is associated with these sources. The objectives of the PSI are to:

◼ Determine if an activity or industry described in the October 2011 edition of the Ministry for the Environment (MfE) Hazardous Activity and Industry List (HAIL) is being undertaken, has been undertaken, or is more likely than not to have been undertaken within or adjacent to the study area.

◼ Determine if the use, storage or disposal of hazardous substances may have resulted in elevated concentration of contaminants which may impact soil disposal or other construction activity.

◼ Consider the likelihood that any potentially contaminating activities identified within the study area pose a risk to human health, the built environment and/or environmental receptors based on the proposed final land use.

◼ Assess the need for further investigation within the study area, with consideration of the proposed final land use and potential environmental impact of the civil works.

◼ To support a resource consent application process under a discretionary activity status under the NES.

1.6 Scope The scope of this PSI includes:

◼ A study area walkover by a Suitably Qualified and Experienced Practitioner of contaminated land services (SQEP).

◼ Review of study area historical aerial photography.

◼ Review of relevant Auckland Council (AC) property file information for properties within the study area.

◼ Review of contaminated land information submitted by AC and within the study area.

◼ Review of study area historical land title information.

◼ Review of AC resource consent information within the study area.

◼ Review of relevant available technical reports (including the AECOM PSI, archaeological report, reports discovered in property files and reports provided through AC contaminated land information requests and various Transport Agency documents) for properties within the study area.

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◼ Preparation of this PSI report which includes:

− Identification of hazardous activities or industries which are being undertaken, have been undertaken, or are more likely than not to have been undertaken on or adjacent to the study area. − Development of a preliminary conceptual site model (CSM) to identify source-pathway-receptor (SPR) linkages and assess the likelihood of potentially contaminating activities identified within or adjacent to the study area that may pose a risk to human health or the environment during the proposed works. − Conclusions and recommendations, which will inform a Detailed Site Investigation (DSI). − Recommendations to address planning, construction and operational risk associated with potential ground contamination in the study area will then be prepared. This report has been prepared in general accordance with the Ministry for the Environment (MfE) Contaminated Land Management Guideline No. 1: Reporting on Contaminated Sites in New Zealand (Revised 2011) (MfE 2011a). The persons undertaking, managing, reviewing and certifying (verifying) this report are SQEPs as defined in the MfE’s NES Users’ Guide (MfE 2012). A ground investigation is currently being completed to support Stage 1 of the development. This report should be read in conjunction with the Aurecon Geotechnical Factual Report (Ref: 506207-0310-REP-GG-034).

1.7 Explanatory Statement

1.7.1 Review Scope and Use

◼ Aurecon has prepared this report for the Transport Agency, exclusively for its use. It has been prepared in accordance with our scope of services and the instructions given by or on behalf the Transport Agency. Data or opinions contained within the report may not be used in other contexts or for any other purposes without Aurecon’s prior review and agreement.

◼ Aurecon accepts no responsibility or liability to any third party for the use of, or reliance on, the report by any third party and the use of, or reliance on, the report by any third party is at the risk of that party.

1.7.2 Limits on Investigation and Information

◼ Soil and rock formations are often variable, and this along with use, storage or disposal of hazardous substances on a site can result in heterogeneous distribution of contaminants. Contaminant concentrations may be estimated at chosen sample locations - however, conditions between sample sites can only be inferred based on geological and hydrological conditions and the nature and the extent of identified contamination. Boundaries between zones of contamination are often indistinct, and therefore interpretation is based on available information and the application of professional judgement.

◼ Only a finite amount of information has been collected to meet the specific technical requirements of the Transport Agency’s brief and this report does not purport to completely describe all the site’s characteristics and properties. The nature and continuity of the ground between test locations has been inferred using experience and judgement and it must be appreciated that actual conditions could vary from the assumed model.

◼ This report does not provide a complete assessment of the environmental status of the site, and it is limited to the scope defined herein. Should further information become available regarding the conditions at the site, including previously unknown likely sources of contamination, Aurecon reserves the right to review the report in the context of the additional information.

◼ This report has been prepared for the Transport Agency for its own use and is based on information provided. Aurecon takes no responsibility and disclaims all liability whatsoever for any loss or damage that the Transport Agency may suffer as a result of using or relying on any such information or recommendations contained in this

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report, except to the extent Aurecon expressly indicates in this report that it has verified the information to its satisfaction. This report is not to be reproduced either wholly or in part without our prior written permission.

2 SITE DESCRIPTION

2.1 Study Area Location The study area is located in the south of Auckland approximately 30 kilometres (km) southeast of Auckland City’s Central Business District (CBD). The study area comprises an approximately 7 km section of a predominantly four-lane highway between Papakura and Drury interchange; Stage 1 of the P2B project. The P2B project extends the Southern Corridor Improvements Project, between Manukau and Papakura. This stretch of highway includes the following dominant features: Papakura Interchange (Beach Road), Park Estate bridge, BP Papakura Service Centre, Otūwairoa (Slippery Creek) Bridge, SH1 Bremner Road Overbridge and Drury Interchange. The study area is shown on drawings presented in Attachment 1 PSI Drawings. The Project area traverses the following zones:

◼ Strategic Transport Corridor Zone.

◼ Coastal – Coastal Transition Zone.

◼ The majority of the surrounding land in the vicinity of SH1 is zoned Residential Mixed Housing Suburban.

◼ Land on the north-western side of the Papakura interchange is zoned Business Mixed Use.

◼ Land on the south-western of the Papakura interchange and the western side of SH1 between Otūwairoa (Slippery Creek) Bridge and Drury interchange are zoned Business Light Industry.

◼ Small parcels of land of both sides of the SH1 zoned Open Space Informal Recreation.

◼ Land to the south of the Drury interchange and further east of SH1 is largely zoned Future Urban. Site identification details are presented in Table 2-1. Table 2-1 Site Details

Site Name Stage 1 Papakura to Bombay

Site Location South Auckland, between Papakura and Drury.

Site Length 7 km

Current Site Use State Highway

2.2 Site Layout A study area extents plan is presented in Drawing 506207-0310-DRG-GG-2301-04 Attachment 1 PSI Drawings. As discussed in section 1.1, the study area consists of SH1 designation within the Stage 1 area and includes adjacent properties where they are within 50 m of the edge of the road seal. The planned highway upgrade is predominantly within the existing road designation. Generally, the alignment does not have its own legal description, as it is within the transport corridor designation.

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2.2.1 Site Walkover Summary A site walkover was undertaken by an Aurecon SQEP on 2 October 2019. The walkover consisted of a drive along the highway, with stops at the BP Service Centre, Hingaia Road, Hinau Road, Chichester Drive, Park Estate Road, Otūwairoa (Slippery Creek) launch point, Creek Street in Drury, Firth Street, Great South Road, Victoria Street in Drury, Drury sports fields, Mercer Street and Flanagan Road. The purpose of the inspection was to identify potential evidence of contamination sources, migration pathways and potential receptors unable to be identified by the desktop study. Observations made during the walkover are presented in Attachment 2 Walkover Description and Photographs. Photographs which were taken on the inspection are also presented in Attachment 2 Walkover Description and Photographs and are referenced in the description. Further detail on the properties in the surrounding area is included in the property file review included in

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Attachment 4 Property File Summary.

2.2.1.1 State Highway 1 The highway within the study area has been worked flat, and generally comprises the paved carriageway and shoulder, roadside vegetation and grassed roadside berms (or verges). The carriageway generally comprises two traffic lanes in both directions, and a grassed median. Additional lanes (extensions of interchanges and services on/off ramps) are present intermittently. The shoulders and grassed berms have numerous features, includes side water channels for drainage, overhead power lines and large electricity pylons, manholes and scruffy domes, substations, street lighting, buried utilities and associated service markers. Properties adjacent to the highway are generally separated from it by fence lines, gateposts or hedgerows. SH1 passes under Beach Road Bridge at Papakura Interchange, under Park Estate Road Bridge, over Otūwairoa (Slippery Creek) on Otūwairoa (Slippery Creek) Bridge, under SH1 Bremner Road Overbridge, and over Great South Road and North Island Main Trunk (NIMT) as part of the Drury Interchange.

2.2.1.2 Surrounding Area The surrounding area is a mixture of residential, undulating farmland, and commercial and industrial units. Generally, north of Otūwairoa (Slippery Creek), the area to the west is predominantly rural, and to the east is residential, however earthworks associated with Hingaia residential development is occurring to the west. On approach to Drury the land- use becomes predominantly commercial / industrial to the east, with Drury sports fields to the west. A number of watercourses and or channels either cross under the highway or are located within 200 m of it. The watercourses are shown on Drawing 506207-0310-DRG-GG-2301-04 in Attachment 1 PSI Drawings. Further detail is included in Section 0. Properties / areas of note adjacent to the highway, include (north to south);

◼ Two petrol filling stations: Z Karaka Service Station (west of the highway at 47 Harbourside Drive), and BP Papakura Service Centre (east of the highway at 53 Parkhaven Road).

◼ Gas substation at 15 Hingaia Road.

◼ New Zealand Bloodstock (a thoroughbred equestrian facility) 10 Hinau Road.

◼ Park Estate School and playing fields at 38V Park Estate Road.

◼ Opaheke peninsula, just southwest of Otūwairoa (Slippery Creek), of which the northern part, PC22, is a Site of Significance to Mana Whenua.

◼ Fletchers construction yard at 5 Creek Street.

◼ Multiple commercial and industrial units in Drury, adjacent to the highway along Creek Street. This includes; Atlas Buildings Removal, Jacobs Demolition, Skilton truck parts and Counties Ready Mix.

◼ Drury Sports Complex at 20 Victoria Street.

◼ Karaka Reserve at 10R Karaka Road.

◼ A workshop at 30 Mercer Street.

◼ NIMT railway line.

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2.3 Site Environment

2.3.1 Topography Beyond the immediate surrounds, the Drury Fault and Hunua Range foothills are present to the east and the settlement of Karaka to the west. The study area consists of rolling hills (elevation typically between 0 to 20 m relative level (m RL)) retaining the original gentle slopes typical of the Manukau Lowlands. The Drury Fault is located approximately 2 km to the east. The study area between Papakura interchange and Park Estate Road traverses this broad lowland at an approximate elevation of 20 m RL. The BP service station motorway on ramp has been constructed along the edge of a steep depression, which has resulted in a 10 m high cut batter slope being formed. South of Park Estate Road the elevation drops to approximately 5 m RL at Otūwairoa (Slippery Creek). South of the creek the elevation of the highway is generally consistent around 5 m RL, however Drury Sports Complex and Drury industrial estate are raised above the highway at approximately 10 m RL.

2.3.2 Geology The Auckland Geological Map, Scale 1:250,000 (Institute of Geological and Nuclear Sciences, 2001) shows the alignment underlain by the following geological units:

◼ Puketoka Formation: consisting of pumicious mud, sand, gravel with peats and lignite, predominant in the Stage 1 area.

◼ Tauranga Group: alluvial deposits and estuarine sediments comprising interbedded silty clays and sands and silts. Generally found near streams. Kaawa Formation and East Coast Bays Formation (ECBF) are also likely to be encountered but are not specifically shown on the published geological maps.

◼ Kaawa Formation: lithofacies include mudstone, muddy and shelly sandstone, bioclastic conglomerate and lithic conglomerate (andesite and basalt pebbles), reflecting the shallow marine and estuarine depositional environment. Typically, an upper massive sandstone unit overlies a lower shelly sandstone and conglomerate unit.

◼ ECBF: a thick (hundreds of metres) sequence of alternating sandstone and siltstone that is inferred to underlie the entire project area. The upper parts of the ECBF are typically weathered, though degree and depth of weathering varies considerably. Publicly available logs on the NZ Geotechnical Database were reviewed (accessed on 12/11/2019). Numerous geotechnical investigations have been undertaken adjacent to the study area and have identified fill between 0 and 5.2 m thick. Fill encountered was generally described as clayey silts and clay. Fill however can comprise of a mixture of engineered fill, uncontrolled fill (which may include demolition rubble, farming debris, refuse and other waste materials), or reclamation fill. Fill is likely to be thickest where gullies have been infilled, areas have been raised or worked, and where former structures were located. Beneath the fill material, clayey silt of the Puketoka Formation was generally identified. This was underlain by Kaawa Formation characterised by a fine greenish sand. Further information on ground conditions is provided in the Aurecon 2019 Geotechnical Interpretative Report (Reference: 506207-0381-REP-GG-0005). As part of this assessment, the publication titled Preliminary assessment of the acid sulphate soils hazard in the Auckland region (Report)3 was reviewed.

3 Roberts, R.C. & McConchie, J. (2017) Preliminary assessment of the acid sulphate soil hazards in the Auckland region Proc. 20th NZGS Geothermal Symposium.

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Acid sulphate soils (commonly abbreviated to ASS) are not a contaminant but rather a soil condition that requires management should its presence be encountered. The above report indicates that part of the study area is within an area classified as a ‘high probability of occurrence’ for potential acid sulphate soils (PASS) to occur.

2.3.3 Hydrology Surface watercourses present on and adjacent to the study area are shown on Drawings 506207-0310-DRG-GG- 2301-04 in Attachment 1 PSI Drawings. At Papakura interchange there are three existing ponds and open channels that service stormwater management requirements of SH1. These generally discharge to Karaka Lakes which is an engineered wetland (approximately 500 m west of the highway). South of Papakura interchange there is no known formalised storm water management. Generally, drainage comprises grassed side water channels (typically unlined) and culverts. The northern part of the study area is situated in Hingaia South storm water catchment. SH1 is crossed by culverts which flow from east to west and discharge into to a series of unnamed watercourses/drainage channels (within 10, 72 Hinau Road, and 115 Park Estate Road) that ultimately discharge to the Drury Creek to the west (approximately 200 m from SH1). The Drury Creek is located within the Coastal Marine Area (CMA). Drury Creek flows into Pahurehure Inlet, which is located approximately 1 km north of the study area and feeds into Manukau Harbour. Further south, SH1 passes over Otūwairoa (Slippery Creek) via a bridge. South of Otūwairoa Creek there are a number of culverts which flow east to west discharging into the CMA extents of the Ngakoroa Stream (approximately 200 m west of the highway). Otūwairoa (Slippery Creek) and Ngakoroa Stream are the upper coastal reaches of Drury Creek and generally flow from south to north. The southern part of the study area is located within the Hingaia Stream Catchment. AC GeoMaps, accessed on 13/11/2019, identify the following areas as being flood prone or part of floodplain:

◼ Papakura interchange.

◼ Chichester Road, just south and east of Papakura interchange (~CH 10400-11200 SB).

◼ The unnamed watercourses/drainage channels within 72 Hinau Road, associated with the culverts under the road in these locations.

◼ The Opaheke peninsula (PC22) just south of Otūwairoa (Slippery Creek).

◼ The area around Ngakoroa Stream.

◼ The eastern part of Drury interchange.

2.3.4 Hydrogeology The following are considered as potential groundwater bearing units:

◼ Tauranga Group: Generally forms a regional aquitard confining the underlying Kaawa sediments. However locally Tauranga Group contains thin sandy layers and lenses which can act as dominant pathways for shallow lateral groundwater migration.

◼ Kaawa Formation: The shell beds and sandstone of the Kaawa Formation is likely to be more permeable than surrounding Tauranga Group and Waitemata Group, thus providing better groundwater storage capacity.

◼ Waitemata Group: Very low permeability, with main aquifer horizons limited to thick fractured sandstone beds and lenses which can form perched and confined aquifers. Table 2-2 is taken from the AECOM PGAR4 and summarises boreholes identified on NZ Geotechnical Database within 100 m of SH1 (between Papakura and Bombay).

Table 2-2 Summary of Boreholes within 100m of SH1 (Source: AECOM PGAR)

4 AECOM, 2017, SH1 South Papakura to Bombay, Preliminary Geotechnical Assessment Report, ref: 60545688.

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Geological Unit Number of Bores Total Depth Range (m bgl) Water Level (m bgl)

Kawa Formation 24 32-163 2.0-18.3

East Coast Bays Formation (Waitemata 32 42.7-269.4 Artesian – 19.2 Group)

Tauranga Group 4 35.1-70.1 Artesian – 7.6

Basalt 10 31.4-81.5 12.2-33.9

Consented bore information was received from AC, and is summarised in Attachment 3 Auckland Council Information. Six bore consents were identified within 200 m of Stage 1, most of which were installed for geotechnical investigation and groundwater monitoring:

◼ One consent, located at 60 Mercer Street, was issued for the construction of a bore for the extraction of groundwater for stock and domestic supply (2017).

◼ Two consents were issued for the construction of boreholes at Papakura interchange (2017). Where detailed, the aquifers were described as either Waitemata or Papakura Sand, the depths of the boreholes were between 24 and 85 m, and the depth to water was 4 m. Information provided by AC also identified a water take (consent number 4015) at 543 Great South Road (100 m east of the highway) for the use of groundwater for municipal supply at Drury. It is detailed as a backup, 150mm diameter bore. The consent was issued in 1984 and expired in 1990. Based on our understanding of ground conditions it may be expected that a shallow water table is present within low lying parts of the study area, that may be conversant with the level of surface water features. In areas of elevated topography depth to a permanent groundwater table may be greater. Deeper groundwater is anticipated within the Kaawa formation and Waitemata Group. It is this deeper groundwater which is recorded as having been utilised for water supply. It is expected that groundwater flow will be directed towards local surface water bodies, draining into Manukau Harbour in the west.

2.3.5 Ecology The receiving environment, Drury Creek is classified as a Significant Ecological Area (SEA) under the AUP. For more information on freshwater and estuarine ecology refer to the Aurecon, 2019, AEE – Ecological Assessment and The Construction Water Management Plan, Reference: 506207-0320-PLN-KS-0007. The report states that the majority of the watercourses have low or negligible aquatic ecological values.

2.3.6 Summary of Environmental Conditions The highway is expected to be underlain by fill of varying thicknesses (known depth of up to 5.2 m) comprised of a mixture of engineered fill, uncontrolled fill or reclamation fill. Fill is likely to be thickest where gullies have been infilled, areas have been raised or worked, and where former structures were located. Fill is likely to be underlain by alternating bands of alluvial silts, sands, and clays of the Puketoka Formation (Tauranga Group). The alluvial sediments are underlain by shelly sandstone of the Kaawa Formation (and known from multiple investigation areas in South Auckland). The Kaawa Formation is underlain by the ECBF, interbedded sandstone and siltstone. A shallow groundwater body is considered likely to be present within shallow granular strata (fill and sandier layers within the Puketoka Formation). The depth is likely to vary across the study area but is likely to be shallower around

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watercourses. Given the proximity to the coast, and numerous watercourses, it is not considered likely that this shallow groundwater is utilised for human consumption, thus the shallow groundwater is not considered sensitive using the MfE 2011c definition. Deeper groundwater present within the Kaawa formation and Waitemata Group is considered likely to be sensitive and is known to be significantly utilised. It is considered likely that these aquifers are afforded protection from surface infiltration due to the presence of a significant thickness of Tauranga Group, and bedrock itself. Groundwater flow direction is likely to be generally towards the west or the closest watercourse. Given the proximity of Otūwairoa (Slippery Creek), and Drury Creek, Hingaia Creek and Ngakoroa Stream and the presence of the CMA, surface waters are considered to be sensitive ecological receptors, even though they have been reported to have low value.

3 SITE HISTORY

3.1 Introduction A search of readily available information sources was conducted with the objective of identifying past or present activities with the potential to contaminate land or other media such as sediment and groundwater. The nature and extent of any identified activities has also been assessed, where information was available.

3.2 Auckland Council Contaminated Site Enquiry Aurecon placed a site contamination enquiry on 6/11/2019, for the SH1 highway and a 50 m buffer (i.e. the study area). A response was received from AC on 7/11/2019. The site contamination enquiry response is included in Attachment 3 Auckland Council Information and is summarised below.

◼ The records did not identify individual horticultural sites in the study area.

◼ It is possible that unconsented land reclamation may have occurred.

◼ The closest closed landfill is Ray Small Park, located >500m away, east of Papakura Junction. Other landfills, including private and those owned or managed by others are not included in the database.

◼ Three pollution incidents were noted; a hydrocarbon / fuel spill on SH1 in 2010 (<10 litres), a concrete wastewater spill off Bremner Road in Drury in 2014, and a dust complaint off Bremner Road in 2013.

3.3 Auckland Council GIS request AC also holds a database of sites that have, or have had in the past, an activity or industry that is detailed in the HAIL (MfE 2012). This database also holds information on regional council consents and applications, legacy and current bores and water takes, permitted activities and contaminated land records. An enquiry, for relevant GIS information for the SH1 highway and a 200 m buffer was requested on 5/11/2019 and a response was received on 6/11/2019. A number of HAIL activities were identified. Further information was requested from the Environmental Health Unit of the Licensing and Compliance Services Department (LCS) on 14/11/2019 and a response was received on 19/11/2019. A summary of the pertinent information is included in Table 3-1 below. Information provided for the study area is presented in Attachment 3 Auckland Council Information.

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Table 3-1 Summary of Auckland Council (AC) GIS Information

Address Lot Summary AC HAIL Records

Southern Motorway (SH1) Papakura - Papakura interchange: AC records identify bore consents issued to the Transport Agency (1 - Drury bore to 25m) and Maunsell Ltd (5 bores to 25m) in 2010 and 2008 (respectively) for the purpose of geotechnical investigation, and an earthworks consent for 6.0ha earthworks (2011-2015). Other relevant information identified within the study area includes: a) Within the verge near 49 Chichester Drive (CH 10380 SB): Records indicate consent to discharge storm water from a residential subdivision and a developed school site (1975- 2010);

b) Within the verge near 13 Joanne Place (CH 11300 SB): Records indicate that the storm water discharge consent is to enclose an open watercourse to enable land to be developed for subdivision and to accept road runoff (1974); c) Near 115 Park Estate Road: Records indicate a consent to divert and discharge storm water under the Southern Motorway into unnamed tributaries of Drury Creek (2017); d) Within the verge near 72 Hinau Road (CH 10840 NB): Stormwater discharge consent from a residential catchment is listed (1987); e) Southern side of 60 Bremner Rroad (20 Victoria Street): Reclamation consent associated with widening the existing Bremner road bridge (2016); f) North of Drury interchange (CH 14000 NB): Storm water discharge consent is recorded (2007). Details provided indicate that the design includes grass swale with manhole riser with staged outlets and scruffy dome.

Otūwairoa (Slippery Creek) (CH 12800) Consent to United Water International for the construction of sewage outfall structures, - including a pipeline under the stream bed (1973).

Hingaia Stream (east of Drury Consent for 50m of stream works associated with the construction of a rock filled gabion wall - Interchange) along the bank of the Hingaia Stream esplanade to stabilise an existing slip in the area south of Firth Street (2005).

Northbound -

10 Hinau PT ALLOT 600 DP There is record of a legacy consent application to take groundwater associated with a AC records indicate that the Road Hingaia 386486 livestock sales complex. property is a HAIL site. “The A consent was issued to Horizon 2000 Ltd for a water take for irrigation of landscape areas site been subject to an and to supply to an ornamental lake (1997, surrendered – never occurred). underground petrol storage

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tank. Fill points and vents may have leaked potentially resulting in contamination of the ground and ground water with petroleum products.”

72 Hinau LOT 601 DP 386486 Consents for river and stream work, earthworks, surface and ground water takes, and storm - Road Hingaia water discharges are listed associated with the proposed development of a tourist theme park, which never occurred. Stream work and earthwork consents to Veolia are listed for the installation of a gravity trunk wastewater sewer including 1950m of trenching (2013). An earthworks consent was issued in 2017 for land modification works across the site, as part of future residential development.

115 Park ALLOT 430 Parish OF Three legacy applications are listed to divert and discharge storm water from Papakura City, to - Estate Road OPAHEKE alleviate flooding, through 3 culverts under the motorway into three unnamed tributaries of Hingaia Drury Creek (2017)

144 Park ALLOT 434 Parish OF A record for a consent to discharge storm water is listed, with no additional details (1978). - Estate Road OPAHEKE Hingaia

27/31 SEC 1 SO 395394 A record of legacy bores associated with domestic water supply are listed. - Bremner Road Drury

20 Victoria ALLOT 390 Parish AC records indicate legacy consents on the property for storm water discharge associated - Street Drury OPAHEKE, PT ALLOT with Drury Recreation Complex (225mm diameter outfall), discharging to Ngakoroa Stream 47 Parish OPAHEKE (1986). A record also exists for a small dam associated with stock grazing.

30 Mercer LOT 1 DP 92474, SEC 1 Records of a consent application for discharge from a site historically decommissioning and AC records indicate the Street Drury SO 69741 refurbishing fuel tanks for approx. 10 years (2004), bore consents for 3 groundwater quality property has been remediated monitoring bores (2003 by Eric Alexander Sinclair), a contaminated site discharge consent for to background. The site has earthworks associated with remediation of contaminated soils on site, including the discharge been subject to spillage of of contaminants from land containing elevated levels of contaminants (2012, by Barry Philips waste fuels and oils due to Holdings). use as a motor vehicle garage and contamination was confirmed to be above relevant discharge criteria. This has since been remediated by the owner. However, Council’s GIS aerial records indicate continued use for motor vehicle activities.

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60 Mercer LOT 2 DP 92474, SEC 1 AC records indicate a legacy bore on the property for domestic supply (85m depth, in 2000- - Street Drury SO 66956 2001 by Felix Stubeli, and 2007-2008 by Carlo Stubeli), and a legacy bore listed as at the same address but located immediately outside the property boundary for stock and domestic supply. In 2007 a bore consent was applied for, to authorise the construction of a bore for domestic supply.

Southbound -

18/46 Park Lot 18 DP 496450, 1/23 Record of storm water discharge associated with the development of a residential subdivision - Estate Road SH Lot 24 DP 496450 (no date).

53 Parkhaven LOT 10 DP 211045 Record of consent for storm water discharge via treatment devices associated with BP Oil AC records indicate that the Drive Papakura Motorway Service Station (1998), and record of earthworks consent for 10.3ha of property is a HAIL site. The earthworks associated with residential subdivision (2007). site is operating as a vehicle refuelling station.

135-137 Great 1/2 SH Lot 1 DP 120070 Records of consents associated with stream works for flood mitigation and pedestrian bridge - South Road installation (2003).

5 Creek Street Pt LOT 3 DP 111728 Legacy application (no date) to discharge contaminants to land or water from industrial AC records indicate that the Drury process or trade (proposed). property is a HAIL site. The site is subject to the storage and/or dispensing of dangerous goods. Council’s GIS aerial records additionally indicate stockpiling of metal materials outside on site.

70 Firth Street LOT 1 DP 111727 Record of consent to Firth Industries to take groundwater for use in stone cutting industry - Drury (100mm bore, of approximately 100m, 1987-1992).

51 Creek LOT 7-16 SEC 3 Deeds Records of the following consents: a) consent for storm water discharge from approximately AC records indicate that the Street Drury Reg 35, 6000 m2 from an impervious area (2010, 2015) b) for approximately 3500m2 of earthworks property is a HAIL site. The associated with extension of the facility, including the filling of a site for use as a storage yard site is presently used as for aggregates and other granular material in the Industrial 3 zone, (2016) c) discharge to air Ready Mix Concrete Products from the manufacture of concrete (2016) d) discharge of contaminants to land or water (2016) Ltd. This has been operating e) and an industrial trade consent - associated with concrete manufacturing activities. Record as a concrete batching plant of an application for consent for storm water discharge from a proposed fuel storage and since December 1999. dispensing facility (no date).

87 Creek LOT 3 DP 201670 N/A AC records indicate that the Street Drury property is a HAIL site. The site has been subject to the

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storage and/or dispensing of dangerous goods. Records additionally indicate the site may be utilised for scrapyard activities at present.

20 Firth Street LOT 1 DP 130158 Records of a consent to discharge up to 15 cubic metres per day of acid-bath rinse-water into AC records indicate that the Drury the Hingaia Stream (1995-1999). Notes that a rinse and discharge pipe were existing, and a property is a HAIL site. The diffused outlet structure was proposed. site has been a supplier to the horticultural industry. The site has been used for storing and distributing a range of grower requisites including fertilisers and industrial chemicals.

10 Firth Street LOT 2 DP 130158 Records of a legacy bore, drilled prior to 1987 for Keith Hay Homes. - Drury

168 Flanagan PT ALLOT 38 Parish OF Records of consents associated with stream works for water pipe installation (2001) - Road Drury OPAHEKE, PT ALLOT 258 Parish OF OPAHEKE

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3.4 Local Authority Property Files A review of information held within council property files was carried out. Fifty-seven properties were selected, all of which are located adjacent to the SH1 corridor. Properties selected were those within / partially within a 50 m buffer of the road seal. Where there were stretches of residential properties within the buffer; a percentage of these lots were selected. Where property files had already been reviewed and summarised in the AECOM PSI, they were not re-ordered. The purpose of the review was to look for evidence of potentially contaminating activities from previous building and land use consent applications held on file with supporting technical information and or plans. A summary of relevant documents identified in the property files is provided in

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Attachment 4 Property File Summary. A brief summary of the property file review is provided below.

◼ Geotechnical investigations have been completed on many of the properties along the route. None of the properties contained geotechnical reports which identified excessive fill (>1.1 m thick).

◼ PSIs and Detailed Site Investigations (DSIs) have been completed for a number of adjacent properties. − DSI reports have been sighted for the following properties, where relevant further information was identified it has been included in Section 3.7.2.

◼ Drury Sports Complex, Mercer Street and Flanagan Road in support of extension to a wastewater sewer (GHD, 2019).

◼ 47 Harbourside Drive in support of commercial development, where it was concluded that no significant contamination was identified during soil and groundwater investigation for a commercial end use (Focus Environmental Services, 2016).

◼ 144 Park Estate Road (2019) in support of residential development, where it was concluded that no significant contamination was identified during shallow soil investigation. Potentially uncertified fill identified in the centre of the site were tested as part of this investigation. The material investigated was not described (Focus Environmental Services, 2019). A closed landfill was identified in the southern portion of 152 Park Estate Road, but this is over 250m from the highway and beyond the study area.

◼ 30 Mercer Street in support of continued use of the site as tank reconditioning facility (Focus Environmental Services, 2012). Auckland Council’s consent for remediation of 30 Mercer Street, notes that contaminating activities may exist in areas beyond those currently indicated for remediation.

◼ Resource consent for the property at 46 Park Estate Road includes a condition requiring the remediation of the site contamination as identified in a PSI report by Dodd Civil Consultants Ltd in 2008. The PSI indicated that there was a mechanical workshop on site, and some clay filling had occurred in the north in the 1980s.

◼ Numerous industrial land-uses are being / have been undertaken at properties in Drury industrial estate off Creek Street, including:

− Firth Industries, which in 1960s and 1970s spanned 15-19 Creek Street as well as 70 Firth Street, and undertook the manufacture of concrete blocks, troughs, tanks and stone processing. This included wet cutting, blasting and polishing operations in which solvents were used. − The property at 23 Creek Street has had dangerous goods licenses dating from 1992 for two 418-litre containers and three 60-litre drums of flammable liquids onsite. − The property at 35 Creek Street has records from 1969 indicating the development of a factory for the manufacture of loaders. In 2003 records suggest improper storage of demolition material by Jacobs Demolition. − Keith Hay Homes has been located at 10 Firth Street since 1980s (likely earlier) and undertakes both dwelling construction and sales.

− The properties at 87 and 81 Creek Street, and 190 Flanagan Road have or have had workshops.

◼ A vector high pressure, natural gas pipeline (200mm steel) was established in 1967; and runs parallel to, and just west of SH1. Upgrades were completed in 2012.

◼ The property files also contained transfers of land, building warrants of fitness as well as building and resource consents for a variety of land uses.

3.5 Records of Title The record of title and historic titles of properties within the study area were generally reported within the property files, and summarised in

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Attachment 5 Survey Plans. A selection of relevant titles has been summarised in Table 3-2. Table 3-2 Summary of Certificate of Title and Survey Plans

Lot / Reference Year Owner Comments Address

20 Victoria Title 1945 Ralph The title shows multiple lots within the current area of Street NA768/174 Alexander Drury sports fields, including lots off Albert Street, DRURY Cossby (Drury Grey Street and Brownan Street (running east west), (PT ALLOT Farmer) is and Victoria Street running north west. Creek Street 47 Parish seised an is labelled in its current location in Drury Estate. OPAHEKE) estate

SO 45811 1967 North This plan shows the land-use around Drury Auckland interchange prior to the interchange. Hingaia Stream Land District is shown in the area of Karaka Reserve. Streets are shown crossing the current interchange area (e.g. Pitt Street), and into the area of the current Drury sports fields. The plan indicates that most roads in the area are going to be closed or modified as part of the highway works.

SO 52437 1976 Franklin Road to be closed and land relinquished. No County significant change from the 1945 title. The highway Survey Plan is not shown.

10R Plan SO 1916 Preston Land required for railway purposes. The plan shows Karaka 19059 Chambers the land required for the northern railway, as per its Reserve Surveyors current location. The plan labels the area around (SEC 1 SO Drury and the current sports field as Runciman’s 65144 township. Old Great South Road is shown in the PT location of the current highway. Hingia Stream is RAILWAY shown crossing the proposed railway area and into LAND SO Drury. 47014) Title 1965 Ronald This title shows the properties on Mercer and Pitt NA7C/1347 Gisbon Hunter Street, around the area of the current Drury Plan SO of Auckland is interchange. There is a note stating that part of the 19059 seised an land within will be taken for the Auckland Hamilton estate Motorway, and part for the use of enjoyment after 1972.

SO 47014 1971 Jerram, Plan for railway land to be relinquished for better Crookes and utilisation. The plan shows the realignment of the Rowe streambed within Karaka Reserve. Surveyors.

SO 55701 1981 Franklin Land required for better utilisation. This plan shows County the area of Karaka Reserve made up of smaller Survey Plan sublots. The plan indicates the old stream bed. The plan shows Old Great South Road (in the location of the current highway), the NIMT railway and current Great South Road.

3.6 Review of Historical Aerial Photography A selection of representative historical aerial photographs is included in Attachment 6 Historic Aerial Photographs Review. Historical aerials were sourced from Retrolens, WSP Opus and Auckland Council Geomaps (accessed 12/11/2019) and reviewed. Oblique aerial photographs sourced from the Alexander Turnbull Library were also reviewed. The development of the study area and surrounding land can be observed in these photographs. Observations are tabulated, presented in Attachment 6 Historic Aerial Photographs Review and summarised below.

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3.6.1 Project Corridor The earliest available photographs (1938) show the area as predominantly rural. Prior to construction of the highway several local roads are evident crossing the designation in the location of the current; Hingaia Road (CH 10040-10060), Park Estate Road (CH 11420), Bremner Road (CH 13740), Norrie Road (CH 14000-14040) and Great South Road (CH-50 Stage 2). The NIMT is also present crossing the designation in these earliest photographs. A number of geomorphological features are shown within the designation, most notably at CH 10400 (gully), CH 11700-12200 (likely an erosional feature associated with Drury Creek), CH 12700-12780 (northern banks of Otūwairoa (Slippery Creek)), CH 13000 (gully on Opaheke peninsula) and Karaka Reserve (oxbow lake). All of which appear to have infilled or modified, prior to or as part of the highway construction. Earthworks for the highway construction began in the early 1960s. Oblique and aerial photographs indicate that earthworks were most notable in the following locations:

◼ Papakura interchange (CH 9860-10200), including Hingia Road and Beach Road modification into an overbridge.

◼ Park Estate Road bridge construction where it extends into 144 Park Estate Road (CH11420-11440 and extending to CH11520 NB).

◼ Otūwairoa (Slippery Creek) Bridge construction and bank modifications (CH 12760-12820); especially modification to the depression just north and west of the creek (CH 12700-12780 NB).

◼ Opaheke peninsula (most notably the western extent) extending to the area just north of Bremner Road (CH12820-13740), where exposed soil is evident around gullies and the banks of the stream in 1967 aerials. This includes the area around Drury industrial estate (CH 13760-13940S B).

◼ Bremner Road, including widening and the construction of an overbridge (CH 13740-13760).

◼ Drury sports fields; in the area adjacent to the highway, (and during the construction of Victoria Street just west of the highway in 1988 (CH13760-14040 NB)).

◼ Drury interchange construction, including the on and off-ramps and the Great South Road and NIMT fly- overs (CH-100-300 Stage 2). Elsewhere earthworks appeared to comprise shallow modification works associated with pavement construction. Several residential units / farm buildings were present within the designation prior to the construction of the highway (as shown in the 1940s aerials). These buildings were demolished as part of the construction works. Since construction (1960s) the aerial photographs do no show significant changes to the project corridor itself. Aerial photographs from 2001 show the highway services (BP Service Centre) has been constructed between CH 11760 and 12080 SB. This included the construction of motorway on and off-ramps, a large paved parking area and commercial units. A BP service station is present at the Service Centre in the southern portion and includes both a car and truck refuelling area. Aerial photographs from 2017 show some modifications to Papakura interchange; namely widening of Beach Road overbridge, Hingaia Road and the interchange on and off-ramps.

3.6.2 Surrounding Area Detailed observations noted during review of the aerials are tabulated in Attachment 6 Historic Aerial Photographs Review. A summary of key land uses observed within the study area (including 50 m from the road seal) are detailed below.

◼ The area was observed to be predominantly rural in the earliest aerial photographs (1939-1942).

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3.6.2.1 East of the Highway (South Bound)

◼ Aerial photographs from 1960-2000 show significant residential development east of the highway, between Papakura interchange and Drury industrial estate. Park Estate School and playfield fields, just south of Park Estate Road were constructed after 1978.

◼ Horticulture / agriculture was present adjacent and east and west of the highway at CH 11100-11420 (north of Park Estate Road) between 1967-1978, after which it was redeveloped into residential.

◼ Drury industrial estate was sparsely developed in 1942 aerial photographs. This area was developed with various industrial / commercial units over time. Units adjacent to the highway, west of Creek Street, and between Norrie Road and Firth Street, were established from 1967. 1967 and 1978 aerial photographs suggest that the land was worked and raised prior to development. Significant external storage is shown in the lots fronting onto the highway, and it is likely that fuel and / or chemical storage has occurred at most of the properties. 2017 aerial photographs showed some of the units to have been redeveloped.

◼ The first major development in the Drury industrial estate was Firth industries cement batching plant. Significant earthworks were apparent in 1969 aerial photographs and those from 1978 show significant external storage including tanks and concrete blocks.

◼ Opaheke peninsula – 5 Creek Street, along the north-eastern extent of the peninsula, was developed for use as a contractor’s yard after 1978.

◼ A depression / oxbow lake was observed approximately 100 m east of Drury interchange in the 1942 aerial photographs (Karaka Reserve) and was infilled or modified after 1960.

◼ Railway sidings and a railyard was observed just south of Karaka Reserve and the NIMT in the earliest aerial photographs, however after 1978 the sidings were removed, and in 2001 this grassed lot was used for building material storage.

◼ Flanagan Road – Allotment gardens were shown at 180 Flanagan Road in 1938. 1960s aerial photographs indicate earthworks in this area likely associated with the adjacent highway construction. The road itself was constructed prior to 1967 and more earthworks are indicated to have occurred in 2001.

3.6.2.2 West of the Highway (North Bound)

◼ Cropping is shown in the lots north of Papakura interchange, and west of the highway in the 1980s.

◼ Aerials show that the lots west of the highway between Papakura interchange and Bremner Road have predominantly been used for agriculture (1940-2017); some of these lots are now undergoing residential development. New Zealand Bloodstock equestrian centre (10 Hinau Road) was constructed just south and west of Papakura Interchange after 1988.

◼ In the 1967 aerial, exposed soil is shown at Drury sports fields; on the banks of the river and adjacent to the highway, indicating soil disturbance. Buildings were constructed in the centre of the sports fields by 2001, and above ground tanks are shown adjacent to these buildings in 2017.

◼ Mercer Street – Buildings and external storage are shown at properties 24-30 Mercer Street in 1967. Aerial photographs from 2001 indicate significant external storage is shown in these lots, including drums and machinery.

3.7 Previous Investigations and Reporting The following reports have been provided by the Transport Agency and within property files (supplied by AC) and pertinent information from the reports is included below.

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3.7.1 Whole Site

3.7.1.1 AECOM PSI5 AECOM prepared a PSI to support the project business case. The PSI identified a number of areas of concern within proposed soil disturbance areas. There is potential that historic and current land use activities within these areas or on these sites may have impacted soil or groundwater to be disturbed as part of the works. Areas of potential concern identified by AECOM, and approximate locations are detailed in the table below. Agricultural land was identified as HAIL activity I. However, agriculture is not a HAIL activity under the NES and therefore we have not included it in Table 3-3. Contaminated marine sediments from the Ngakoroa Stream were also identified as an area of concern, however there is not considered to be enough information to support this as a source of contamination and so it has not been included in the table. Aside from the uncontrolled fill, none of the identified areas of concern are located within the designation.

Table 3-3 Areas of Concern as Identified by the AECOM PSI

Areas of Concern Chainage / Contaminants of Receptors Address Potential Concern

Uncontrolled fill or CH 9000 to 14054 Asbestos containing Construction workers spoil importation materials (ACM), Metals, Existing project Future site users (HAIL G3 or I) Hydrocarbons, Semi corridor and volatile organic Adjacent site users/residents structures (bridge compounds (SVOC) abutments and Ecological receptors beneath the project corridor)

Fuel filling station CH 11990 to 12080 Metals, Hydrocarbons, Construction workers (BP Service Station) SB (53 Parkhaven SVOC, Volatile Organic Future site users (HAIL F7) Drive) Compounds (VOCs) Adjacent site users/residents Ecological receptors

Vehicle workshop CH 13760 to 13840- Metals, Hydrocarbons, Construction workers (HAIL F4) SB (69 Creek Street) SVOC, VOCs Future site users Adjacent site users/residents Ecological receptors

Concrete batching CH 13660 to 13740 Metals, Hydrocarbons, pH Construction workers (HAIL E3) SB (16 Bremner Future site users Road / 51 Creek Street) Adjacent site users/residents Ecological receptors

Various currently CH 12880 to 13230, Metals, Hydrocarbons, Construction workers unidentified CH 13590 to 13660, SVOC, ACM, VOC Future site users industrial activities, CH 13760 to 13840 including SB Adjacent site users/residents construction yard, (5 Creek Street 35 Ecological receptors demolition yard Creek Street, 51 (HAIL I)

5 AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay Widening, Ref: 60545688 WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION B | PAGE 37

Creek Street, 69 Creek Street)

*SB = Southbound, NB = Northbound. The AECOM PSI concludes that proposed land disturbance works may present a risk to a number of receptors, including:

◼ Construction workers through dermal, ingestion and inhalation pathways.

◼ Neighbouring land users through dermal, ingestion and inhalation pathways.

◼ Sensitive ecological environments through the mobilisation of impacted sediments and storm water runoff.

◼ Other properties outside of the road designation, should impacted spoil materials generated during land disturbance works be disposed of in an unauthorised manner. The PSI recommended that a DSI should be completed where soil disturbance is proposed, to further characterise the site. The DSI recommendations include targeted soil sampling of the locations identified above, in areas of key data gaps and every 500 m along the highway.

3.7.1.2 AECOM PGAR6 The objective of the PGAR was to summarise existing geological and geotechnical information to identify gaps and investigation requirements to enable completion of concept design for the project. This report reviewed previous geotechnical investigation information. The following projects were referenced:

◼ Papakura interchange upgrade (undertaken by AECOM between April and May 2008).

◼ Chichester Reserve stormwater pipe upgrade (Soil and Rock Consultants between November 2007 and February 2008).

◼ BP Papakura (Woodward-Clyde NZ in April 1997).

◼ Hingaia peninsula development (Tonkin and Taylor in March 2002). In these investigations fill was encountered to a maximum depth of 5.2 m and was described as a sandy clay, silty clay or silty gravel. No anthropogenic material was detailed in the summary provided in the PGAR. Puketoka formation was generally encountered beneath the fill. Groundwater was encountered between 0.6m and 9.2 m bgl. The PGAR also discussed the site history, and pertinent information is summarised below:

◼ The first phase of construction (from 1965) saw the extension of the southern motorway from Takanini to Great South Road just south of the Drury.

◼ In 1978 the second phase was undertaken, and the motorway was extended to Great South Road and Bombay Road, north of the Bombay Hills.

◼ In 1993 the motorway was extended south to Mill Road and joined the Waikato Expressway. The town of Drury was established in the late 1800’s. The establishment of the SH1 bypass led to an increase in development in the Drury area in 1965. Papakura interchange consists of two adjacent bridges, the original two-lane bridge was constructed circa. 1964, and upgraded and widened in 2008, including the on/off ramps. Park Estate Bridge was also constructed circa. 1964. Between 1996 and 2001, the BP Service Centre and associated motorway on/off ramps were constructed.

6 AECOM, 2017, SH1 South Papakura to Bombay, Preliminary Geotechnical Assessment Report, Ref: 60545688. WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION B | PAGE 38

3.7.2 Stage 1A

3.7.2.1 AURECON 2019 – Archaeological Assessment Report (Ref: 506207-0391-REP-NN-0024) This report was undertaken to support a resource consent application for Stage 1A. Pertinent information has been summarised below. Pre-European settlement in the area comprised extensive cultivation areas. In 1842 the New Zealand Government purchased land referred to as the Papakura Block. Drury came to prominence during the New Zealand Wars when it was established as a military garrison. The access to the Manukau Harbour through the Pahurehure Inlet and its location on the Great South Road meant the town served as a supply base and staging post for the Waikato Wars. The military used the Pahurehure Inlet for access to Drury. Drury also hosted a commissariat redoubt (R12/756) and military redoubt (R12/123) across the creek to the east of the Bremner Road SHA. The Assessment concluded there were 13 items of archaeological or heritage interest identified within 200m of Stage 1A. Of these, 12 are located outside of the designation boundaries and are not impacted by the proposed Stage 1A works. Only Ōpaheke7 was considered to be potentially impacted, which is identified as a place of significance to Mana Whenua at Otūwairoa (Slippery Creek). Ōpaheke is located on the southern headland at the confluence of Otūwairoa (Slippery Creek), Hingaia Stream and Ngakoroa Stream. This site includes part of the SH1 corridor and 27 Bremner Road (Section 1 Survey Office Plan 395394) to the south of Otūwairoa (Slippery Creek) Bridge. Ōpaheke is known to be a wāhi tapu, kāinga and a pā site, which was modified to be a wharf and coal tramway terminal. The extent of Ōpaheke includes the western side of 27 Bremner Road known as Abraham’s Point, which is listed as an archaeological site. The site was initially recorded in 1963 and consisted of several timber piles from an old wharf or jetty, the railhead from the 1862 tramway and two ditches dug around the complex. The area has been subject to heavy modification, with it being in pasture prior to the motorway. The highway installation heavily modified the peninsula and the pā. A 1967 aerial photograph of Ōpaheke shows that large portions of land were subject to cut and fill, and reclamations, especially along the western side of the highway. The ditch that transects the north of the peninsula has been filled. A field survey was undertaken but no archaeological material was identified. As the majority of the designation was topsoil stripped, contoured and modified as part of the highway work it is concluded there is no reason to suspect any archaeological features remain within the designation. Thus, works within designation will not require archaeological mitigation, however those beyond may.

3.7.3 Surrounding Area

3.7.3.1 Focus Environmental Services Ltd, 2015, Preliminary Site Investigation, Proposed Watermain Route, Oranga Bay Development (Ref: 0522.001). Focus Environmental Services Ltd were contracted to carry out a PSI of the proposed watermain route, which included the area between Drury sports fields and Flanagan Road. The PSI included properties at 10R Karaka Road, the SH1 road verge, 30 Mercer Street, and 20 Victoria Street. Previous investigations at 30 Mercer Street were referenced, in summary these identify the following:

◼ The site has been used for cleaning and dismantling of disused fuel storage tanks for at least 10 years and a resource consent was sought for the discharge of contaminants. Notes also suggest it has been used as a vehicle workshop, and for blasting and painting.

◼ Shallow soil investigation (9 test pits to a maximum of 1m) identified elevated concentrations of hydrocarbons in shallow soils. Remediation and validation was completed by Focus Environmental in 2013 – 733.68 tonnes of contaminated soils were excavated and removed from the site. The site was validated

7 Item 99 in Plan Change 22 (Schedule 12 of the AUP) WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION B | PAGE 39

as suitable for a commercial land use. No groundwater sampling or analysis was done as part of the investigation or remedial works. The PSI concluded that the following potentially contaminating land uses may be present on site; uncertified filling at 10R Karaka Road, migration of contaminants at 30 Mercer Street, and pesticide application and filling at 20 Victoria Street.

3.7.3.2 Focus Environmental Services Ltd, 2019, Detailed Site Investigation and Site Management Plan, Stage 2 Park Estate Road, Auckland (Ref: FES 1207.001) Focus Environmental Services Ltd were contracted to carry out a DSI in support of Stage 2 residential development on Park Estate Road. This DSI was designed to target uncertified fills found during a walkover in the central portion of 144 Park Estate Road (as well as other locations beyond the study area). Samples were collected at surface and 0.5m below ground from six locations (144 AH05-10) around stockpiles of uncertified fills in 144 Park Estate Road. The fill material was not described. It was concluded that concentrations of contaminants (cadmium, organochlorine pesticides and polycyclic aromatic hydrocarbons) were at levels above the NES Soil Contaminant Standards for health for residential land use (10%) or permitted activity criteria in the Auckland Unitary Plan. A site management plan was written to ensure the soils were handled in a controlled manner and disposed of appropriately during proposed development works.

3.7.3.3 GHD, 2019, Drury South Wastewater Servicing, Rising Main Alignment Detailed Site Investigation. (Ref: 51/37513) GHD undertook a DSI in support of design and construction of a new rising main in Drury. The DSI focused on the alignment between Drury Sports Complex and 103 Flanagan Road (including Mercer Street). The ground investigation comprised the completion of 7 boreholes. Those within the study area include;

◼ BH501 to 19.8 m in the south of Drury sports fields. Ground conditions encountered comprised fill to 2.16 m, described as stiff silt and clay with some intermixed topsoil and pumice sand and basalt, underlain by clay and sand.

◼ BH405 to 6.45 m along Mercer Street. Ground conditions were described as fill to 0.7 m described as clayey silt, over silt.

◼ BH403 to 14 m at Flanagan Road. Ground conditions were described as clayey or gravelly silt. Soil laboratory results from BH501 reported trace levels of Total Petroleum Hydrocarbons (TPH) in near surface. Concentrations of heavy metals and polycyclic aromatic hydrocarbons (PAH) were detailed to be below respective environmental screening criteria or background concentrations (with the exception of BH402 which reported lead above background and select PAH at low levels). Shallow groundwater samples reported concentrations of chromium, nickel and zinc above ANZECC 2000 freshwater guidelines. The DSI concluded that soil and groundwater in the vicinity of the proposed main are unlikely to pose a risk to human health and the environment.

3.8 Anecdotal Information The following document was reviewed; Auckland Council, Brassey, R. December 2017, The Drury Industrial Tramway: a review of management options, and pertinent information is summarised below. Coal was mined in the Drury area from the late 1850s. A single horse drawn tramway was built upon an embankment of shale tailings from the mine. The tramway was opened in 1862, but the operation lasted less than a year. Figure 4 in the above-mentioned report (Figure 3-1 below) shows the tramway crossing the Ōpaheke peninsula to a wharf. The tramway closed around 1863.

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In 1864 the government authorised the construction of a railway from Auckland to Drury, and terminated at Drury station. The availability of quantities of fireclay associated with the coal lead to development of a pottery and brickworks in the area. The Drury Brick and Tile Company were sold in 1921 and Drury Potteries Limited went into liquidation in 1928. Quantities of brick seconds and brickbats were used as paving around cowsheds. The railway was closed around 1921. The location of the former railway is identified as around Drury Hills east of the study area.

Figure 3-1 Location of former tramline (Source: Auckland Council, Brassey, R. December 2017, The Drury Industrial Tramway: a review of management options)

3.9 Identified Contaminant Source Areas Based on the review of existing background information as described above, the following potential source activities have been identified within the study area. Where HAIL activities are applicable these have been listed below in brackets. The following potential sources of contamination have been identified within the road designation:

◼ Filling associated with highway construction earthworks.

◼ Metallic paints associated with electricity pylons.

◼ Side water channels. The following potential sources of contamination have been identified adjacent to the road designation:

◼ Corrosives including formulation or bulk storage (A4).

◼ Persistent pesticide bulk storage or use (A10) associated with horticultural activities.

◼ Petrochemicals below ground (gas substation) (A13).

◼ Printing including commercial printing (A15).

◼ Storage drums or tanks (chemical/fuel) (A17).

◼ Wood treatment, preservation and storage (A18).

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◼ Asbestos products manufacture, disposal or deterioration (E1).

◼ Cement or lime manufacture (E3).

◼ Motor vehicle workshops (F4).

◼ Service stations (F7).

◼ Drum or tank reconditioning or recycling (G2).

◼ Waste disposal to land or waste stockpiling (G5).

◼ Wastewater treatment (G6). The location of these HAIL activities are identified on Drawing 506207-0310-DRG-GG-2381-84 in Attachment 1 PSI Drawings, and non-HAIL activities on Drawing 506207-0310-DRG-GG-2391-94, and are presented in Table 3-4. Table 3-4 Potential Source Areas

Location Chainage Potential Source or HAIL Primary Documentation Source activity

Road As shown on a) Filling a) Historical aerial Drawing 506207- photographs 0310-DRG-GG- b) Side water channels 2391-94 b) Walkover

CH 9260 SB, Metallic paints associated Walkover 9320 NB, CH with electricity pylons, and 9680 NB & SB, the pylons themselves CH 10080 NB & SB, CH 10480 NB & SB, CH 10980 NB, CH 13920 NB, 13960 SB and in Karaka Reserve

North bound

5 Harbourside Drive CH 9560-9900 A10 Property files, historical aerial NB photographs

15 Hingaia Road (14 CH 9940-9960 A13 Property files, walkover Hilldene Road) NB

10 Hinau Road Hingaia CH 10050-10550 A17 AC records NB

115 Park Estate Road CH 110200- A10 Historical aerial photographs 11380 NB

144 Park Estate Road CH 11880-11920 G5 Property files, previous NB investigations and reporting

27 Bremner Road Drury CH 13060-13750 G5 Historical aerial photographs, NB previous investigations and reporting

18 Victoria Street Drury CH 13760-00 NB G5 Walkover, historical aerial photographs

20 Victoria Street Drury CH 13780-00NB G5 Walkover, historical aerial photographs

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30 Mercer Street Drury CH 10-100 NB a) G2 AC records, property files, previous investigations and b) A17 reporting c) F4 AC records, property files, AC records, property files, walkover

60 Mercer Street Drury CH 110-200 NB A10 Historical aerial photographs

68 Pitt Road Drury CH 350-500 NB A10 Historical aerial photographs

South bound

57 Park Estate Road CH 11380-11400 A10 Historical aerial photographs SB

46 Park Estate Road CH 11450-11550 F4 Property files SB

38V Park Estate Road A10 (playing fields) Walkover

53 Parkhaven Drive CH 11900-12080 F7 AC records, property files, SB walkover,

135-137 Great South CH 12820-12860 F4 Walkover, AC records Road SB

Otūwairoa (Slippery CH 12800-12820 G6 Walkover Creek) Reserve SB

2R Creek Street CH 12860-12880 G6 Property files SB

5 Creek Street Drury CH 12880 to A17 AC records, property files 13230 SB

70 Firth Street Drury CH 13230-13400 a) E1 a) Property files, walkover SB b) E3 b) Property files, c) A17 c) Historical aerial photographs

15-19 Creek Street Drury CH13400-13530 a) G5 a) Property files, SB b) A18 b) Property files, c) A17 c) Property files, d) E3 d) Walkover

23, 31, 33 Creek Street CH 13530-13590 a) A17 a) Property files, SB b) A15 b) Walkover

35 Creek Street Drury CH 13590-13660 a) A17 a) Walkover SB b) F4 b) Property files c) E1 c) Property files

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51 Creek Street Drury CH 13660-13740 a) E3 c) AC records, property files, SB walkover b) A17 d) Property files

69 Creek Street Drury CH 13760-13840- F4 Walkover SB

81 Creek Street Drury CH 13840-13880 F4 Property files SB

87 Creek Street Drury CH 13880-13940 a) F4 d) Walkover SB b) D5 e) Property files c) A17 f) Property files, AC records

38 Norrie Road Drury CH 13900-14000 A17 Property files SB

20 Firth Street Drury CH 14005-14040 a) A10 AC records SB b) A4

10 Firth Street Drury, 301- Stage 2 - CH 0- - E1 Walkover, property files 305 Great South Road 100 SB

10R Karaka Road Drury Stage 2 - CH -50- G5 Historical aerial photographs, (SO 65144, Sec 1 SO 100 SB previous investigations and 65144, Pt Railway Land reporting SO 47014)

190 Flanagan Road Drury Stage 2 - CH 250- a) A10 a) Historical aerial (Allot 422 Parish of 400 SB photographs Opaheke) b) D5 b) Property files

3.10 Summary of Potential Contaminant Sources Generally, the area has been predominantly rural and used for pasture. It is understood that in the mid to late 1800s the Drury area was used as a military garrison. In the late 1800s an old tramway was constructed in Drury, which is thought to have trended across Ōpaheke peninsula to a wharf on its west side. Modification and working of the land has formed part of the local history. The tramway and coal mining resulted in the beginning of modern industry in Drury with the opening of a Brickworks and Pottery in 1906. Earliest aerial photographs (1939-1942) confirm the area was predominantly rural; with scattered residences, local roads (Hingaia Road, Park Estate Road, Bremner Road, Great South Road), and the NIMT alongside a railway yard just east of the highway in Drury. Historical aerials and the archaeological report suggest that low lying areas were modified and filled prior to highway construction; such as Ōpaheke peninsula, Drury sports fields and Karaka Reserve. As the quality of fill used in these areas is unknown, it is possible that waste has been disposed of to land, which is considered HAIL activity G5.

3.10.1 Road Designation The highway was constructed in the mid-1960s. This included the construction of the supporting structures present along this stretch of highway. A potentially contaminating activity not specifically listed by the HAIL is the filling that occurs during the construction of highway corridors, motorway connections, and the storm water

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assets constructed to control the local hydrogeology as well as other assets. However, we note that the majority of the motorway construction appears to have been via cutting soil to waste rather than substantial fills. Earthworks were required to create a platform for the highway. Generally, this involved shallow cut or filling, for pavement construction, however areas of more significant earthworks are apparent on aerial imagery. Geological features, shown in 1940 and 1960s aerial photographs, were modified as part of the construction; most notably at CH 10400 (gully south of Papakura interchange), CH 11700-12200 (depression around BP Service Centre), CH 12700-12780 (northern banks of Otūwairoa (Slippery Creek)), CH 13000 (gully on Ōpaheke peninsula). Earthworks also extended into adjacent properties (e.g. 144 Park Estate Road, 27 Bremner Road, 20 Victoria Street), where oblique aerial photographs indicate that excess soil was placed, or construction yards were located. Engineered fill is likely to have been used during highway construction. The nature of roadway construction and operation includes distribution of bitumen (petroleum hydrocarbons) across most sealed surfaces as well as weathering of mechanical parts and tyres, leakage from engines and deposition of lead when leaded fuels were used. Therefore, it should be noted that although a specific activity for this use of land for roading is not noted in the HAIL, the potential exists for discovery of contaminants in soil within the road reserve. Photographs also show that properties located within the designation were demolished as part of the highway construction works. As these were built pre-1940s these are not considered to be a significant source of contamination. Most services present within the road reserve (e.g. transformers, sign gantries, telecom towers) are not considered to be a source of contamination due to their recent installation. The side water channels, located within the road reserve are subject to the migration of hazardous substances from the highway, and therefore are considered potential contamination sources. These channels were observed to be discoloured during the walkover. Electricity pylons in the road reserve can also act as a contamination source, when metallic coatings and the pylons themselves deteriorate. Given the proximity to numerous watercourses, the study area includes, or has included, many creeks and gullies. Historical aerial photographs indicate that the majority of gullies crossing the highway were filled or culverted as part of highway construction works. According to the ecological assessment report included within the AEE for this project, the quality of these watercourses is poor. Historical aerial photographs indicate that Otūwairoa (Slippery Creek) has had some modification works undertaken as part of the highway and bridge construction, and during the construction of a sewage outfall. As such, filling and reclamation may have occurred around the stream banks.

3.10.2 Wider Study Area AC records and historical aerial photographs indicate that the area north of Otūwairoa (Slippery Creek) has predominantly been rural farmland and pastures, and more recently the larger lots have been subdivided for residential use. Other activities of note in this area include;

◼ 1980s historical aerial photographs show cropping or horticultural activities along Harbourside Road to the north of Papakura interchange (and west of the highway). These activities were also present in the area north of Park Estate Road and east of the highway (115 and 57 Park Estate Road) prior to 1978 when the area was subdivided for residential use. Activities associated with horticulture include the storage and application of persistent pesticides (HAIL activity A10).

◼ An equestrian sale yard complex was constructed in 1980s at 10 Hinau Road, and AC records designate this site a HAIL due to underground petrol tanks.

◼ The gas substation observed at 15 Hingaia Street is considered to be HAIL activity A13 due to the presence of gas infrastructure and vents.

◼ The property files for 46 Park Estate Road indicated that there was a mechanical workshop (HAIL activity F4) on site after 1983, and some clay filling occurred in the north associated with the construction of the BP Service Centre on-ramp.

◼ The area south of Otūwairoa (Slippery Creek) is dominated by the industrial edge of the town of Drury.

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◼ Historical filling at Drury sports fields and Karaka Reserve, are likely to have resulted in modifications to the adjacent to Ngakoroa Stream, and Hingaia Stream respectively. In 2016 a reclamation consent was issued for Ngakoroa Stream around Jesmond Bridge associated with its widening.

◼ Drury industrial estate, in the area adjacent to the highway to its east, was developed with various industrial / commercial units from 1967. Information reviewed suggests that the following have been undertaken in this area.

◼ Storage tanks or drums for fuel, chemical or liquid waste (HAIL activity A17) at 5 Creek Street, 70 Firth Street, 15-19 Creek Street, 23 Creek Street, 35 Creek Street, 51 Creek Street, 38 Norrie Road, 87 Creek Street.

◼ Motor vehicle workshops (HAIL activity F4) at 35, 69, 81 and 87 Creek Street and 30 Mercer Street.

◼ Cement or lime manufacture (HAIL activity E3) at 70 Firth Street,15-19 and 51 Creek Street. Notably Firth Industries, which in 1960s and 1970s spanned the north of Creek Street and Firth Street, undertook the manufacture of concrete blocks, troughs, tanks and stone processing.

◼ Asbestos disposal including sites with buildings containing asbestos in a deteriorated condition (HAIL activity E1) at 70 Firth Street, 10 Firth Street (removable home storage) and 35 Creek Street (demolition waste).

◼ Commercial printing (HAIL activity A15) at 23 Creek Street.

◼ Uncertified filling at 15-19 Creek Street (1991, HAIL activity G5).

◼ Outdoor storage of treated wood at 15-19 Creek Street (HAIL activity A18).

◼ Corrosives including formulation or bulk storage at 20 Firth Street (HAIL activity A4).

◼ Engineering workshop at 87 Creek Street and 190 Flanagan Road (farm machinery repair shop) (HAIL activity D5).

◼ Bulk persistent pesticide storage associated with the Horticentre (HAIL activity A10) at 20 Firth Street. A workshop is present at 30 Mercer Street, and AC records suggest there has been tank / drum storage and recycling (HAIL A17, G2) on this lot since 1968. AC records indicate that shallow soil remediation has been undertaken. Aerial photographs indicate that lots at 68 Pitt Road and 190 Flanagan Road, south of Drury interchange. have been subject to horticulture.

4 PRELIMINARY CONCEPTUAL SITE MODEL

4.1 Introduction The Conceptual Site Model (CSM) outlines the potential source-pathway-receptor linkages that may be present. The CSM defines what contamination could be present at a site, how they may travel and what receptors they could affect by doing so. Establishing these factors is essential to guide the preparation of an investigation plan.

4.2 Potential Sources A summary of source areas within and adjacent to (50m of) the study area is presented in Section 3.9. Table 4-1 presents a summary of contaminants of potential concern associated with each of these areas. It is noted that potential acid generating geology is anticipated within the study area, however this is not considered contamination.

Table 4-1 Source Areas and Contaminants of Potential Concern (COPC) Summary

Address Source Activities / Areas HAIL Activity COPC

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Within the designation

Across the site (as shown on Bulk filling, excluding N/A Hydrocarbons (including PAHs), Drawing 506207-0310-DRG- pavement and heavy metals GG-2391-94) Side water channels N/A Hydrocarbons (including PAHs), and heavy metals

CH 9260 SB, 9320 NB, CH Metallic paints (pylons) N/A Heavy metals, notably zinc, 9680 NB & SB, CH 10080 NB copper and lead & SB, CH 10480 NB & SB, CH 10980 NB, CH 13920 NB, 13960 SB and in Karaka Reserve

Adjacent to the designation

20 Firth Street Corrosives including A4 Heavy metals, sulphate formulation or bulk storage

5 Harbourside Drive, 57 Park Bulk storage or use of A10 Heavy metals and organochlorine Estate Road, 115 Park Estate persistent pesticides pesticides (OCPs) Road, 68 Pitt Road, 20 Firth Street, 60 Mercer Street, 190 Flanagan Road

15 Hingaia Road Petrochemicals below A13 Hydrocarbons (including PAHs), ground fuel lines and heavy metals

23-33 Creek Street Commercial printing A15 Volatile organic compounds (VOC), semi-volatile organic compounds (SVOC) and heavy metals

10 Hinau Road, 30 Mercer Storage tanks or drums A17 Hydrocarbons (including PAHs), Street, 5 Creek Street, 70 for fuel, chemical or liquid heavy metals, VOCs, Firth Street, 15-19 Creek waste. Street, 23-33 Creek Street, 35 Creek Street, 51 Creek Street, 87 Creek Street, 38 Norrie Road

15-19 Creek Street Preserved wood storage A18 Metals, PAHs, OCPs

87 Creek Street, 190 Engineering workshops D5 Hydrocarbons heavy metals, Flanagan Road VOCs, SVOCs,

10 Firth Street (including 301- Deteriorated historical E1 Asbestos containing materials 305 Great South Road), 35 construction materials (ACM), and lead Creek Street, 70 Firth Street (asbestos)

70 Firth Street, 15-19 Creek Concrete batching E3 Heavy metals Street, 51 Creek Street

46 Park Estate Road, 30 Motor vehicle workshops F4 Hydrocarbons (including PAHs), Mercer Street, 135-137 Great VOC, and heavy metals South Road, 35 Creek Street, 69 Creek Street, 81 Creek Street, 87 Creek Street

47 Harbourside Drive, 53 Service stations including F7 Hydrocarbons (including BTEX, Parkhaven Road refuelling activities PAHs), and heavy metals

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30 Mercer Street Drum or tank G2 Heavy metals, hydrocarbons reconditioning or recycling (including PAH), VOC,

144 Park Estate Road, 27 Filling with unknown G5 Heavy metals, hydrocarbons Bremner Road, 18- 20 Victoria material / waste disposal (including PAH), ACM Street, 15-19 Creek Street, to land 10R Karaka Road

Otūwairoa (Slippery Creek) Waste water treatment G6 Heavy metals, hydrocarbons Reserve and 2R Creek Street (including PAH),

4.3 Pathways Pathways for contaminant exposure and offsite migration of contaminants generally include the transport of contaminants via air, solid phase, and water. The potential pathways identified from the desk information are:

◼ Direct contact (dermal and ingestion).

◼ Inhalation of contaminated dust.

◼ Overland or underground transport of contaminated sediment in surface water or groundwater.

◼ Migration of contaminants from offsite sources via surface water runoff.

4.4 Receptors Receptors include people and the environment (for example surface water ecosystems) that are or may be adversely affected by the identified contaminants. The potential receptors identified in the assessment include:

◼ Future site users.

◼ Maintenance and construction/excavation workers.

◼ Adjacent residents.

◼ Ecology with multiple streams crossing the study area.

◼ Underground infrastructure.

◼ Groundwater. Potential transport mechanisms and exposure pathways can be complex, depending on the COPC and receptor(s). Therefore, potential SPR linkages have been presented for heavy metals, OCPs, hydrocarbons (including PAHs and BTEX), asbestos, SVOCs and VOCs. Potentially complete source-pathway-receptor linkages are presented in Figure 4-1.

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Figure 4-1 Conceptual Site Model

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4.5 Preliminary Risk Assessment Several source areas have been identified that have been or are likely to have been undertaken within the study area. Possible SPR linkages have been identified for:

◼ Construction and maintenance workers that may come into direct contact with contaminated materials (soil, possibly groundwater) or inhale contaminated dust / asbestos fibres during excavation works.

◼ Adjacent site users, and adjacent residents during construction works.

◼ Surface water receptors / ecological communities that may be impacted by contaminated sediment associated with the works. Shallow groundwater present within shallow fill or granular deposits is not considered to be a sensitive receptor, for further information refer to Section 2.3.4. However, shallow groundwater is considered to be a pathway to surface water receptors and is therefore considered under bullet point three above. Deeper groundwater present within the Kaawa formation and Waitemata Group is considered likely to be sensitive and is known to be significantly utilised. It is considered likely that these aquifers are afforded protection from surface infiltration due to the presence of a significant thickness of Puketoka formation, the artesian nature of the aquifer in this location and bedrock itself. Given the above, groundwater within deeper aquifers is not considered further. This assessment is limited to identified receptors within or directly adjacent to SH1. A detailed site investigation should be undertaken prior to construction to refine the CSM and confirm potentially complete SPR linkages identified in Figure 4-1. It is possible that study area construction works may encounter evidence of contamination that could not be identified through the scope of this PSI. Should unanticipated contamination be encountered, a SQEP should be engaged to assess the requirement for further investigation and/or risk management.

4.6 Priority Contamination Areas Potential source areas within the designation, as highlighted on Drawing 506207-0310-DRG-GG-2391-94, should be prioritised for investigation due to their potential scale and potential for economic impact on the project. These include side water channels, areas of filling, and areas around the overhead electricity pylons. An assessment of the risk from acid sulphate soils is also recommended. Adjacent to the highway, several potential source areas are considered to have the greatest potential to have resulted in migration of hazardous substances into the neighbouring road designation. As such, these should also be investigated as priority. The following locations are considered a priority: 1. BP Service Centre: given its elevated location on the boundary of the designation, and the number of fuel tanks likely to be present, this area has a high risk of impact to ground conditions. Contaminants of concern (hydrocarbons including TPH, BTEX and PAHs) are mobile and therefore may have migrated into the adjacent designation. 2. Drury industrial estate CH 12880 SB -Great South Road; numerous industrial activities have been or are being undertaken along this stretch. Given their location (elevated and on the boundary of the designation), the significant time period that these activities have been undertaken (since late 1960s), and the potential mobility of contaminants of concern (specifically hydrocarbons (including TPH, BTEX and PAHs) and VOCs) these activities may have impacted the adjacent SH1 designation. 3. Unknown filling: the extent and nature of filling in the areas detailed below is unknown and may include land within the SH1 designation prior to highway construction. a. Karaka Reserve. b. Drury sports fields and 18 Victoria Street.

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4. 30 Mercer Street; the site has been used for cleaning and dismantling of disused fuel storage tanks for a significant period. Although shallow soil remediation has been completed, groundwater was not investigated or treated as part of these works. Given its location and the potential mobility of contaminants of concern, these activities may have impacted the adjacent SH1 designation. Other identified source areas should be investigated in the instance that earthworks are proposed beyond the designation (e.g. as part of Stage 1B).

5 REGULATORY ASSESSMENT

5.1 Health and Safety at Work Act 2015 Risks to construction and maintenance workers are legislated by the Health and Safety at Work Act (2015), and there is the potential for risks to construction and maintenance workers to be present during the proposed development works. Due to the potential for asbestos to be present within fill material the requirements of the Health and Safety at Work (Asbestos) Regulations (2016) may also apply to the development earthworks. A Contaminated Site Management Plan (CSMP) is likely to be required to support the earthworks. This will document minimum procedures and standards to be followed during earthworks and construction to manage and / or remove the risks posed by soil contamination, including asbestos. Through implementation of the CSMP, the risk posed to human health (construction and maintenance workers, and off-site users) and potential environmental / ecological receptors can be substantially reduced to an acceptable standard.

5.2 NES Soil The NES is potentially applicable to any HAIL sites with proposed development works that includes soil disturbance or sampling, removal of fuel storage systems, subdivision or change in land use. The findings of this PSI indicate that several HAIL activities are present directly adjacent to the road designation. Depending on the exact nature of the construction activity these may be disturbed as part of the project. Specific advice from the project planner should be sought on what type of consent is required.

5.3 Auckland Unitary Plan The AUP addresses the discharge of contaminants from land containing elevated levels of contaminants. It is likely that a CSMP will be required to comply with the permitted activity criteria with Section E30 of the AUP. The earthworks will likely exceed the soil disturbance volumes stated within rule E30.6.1.2, so the requirements laid out in rule E30.6.1.4 (assessment of contaminants against natural background ranges, Tier 1 soil acceptance criteria and permitted activity criteria) will need to be met. The CSMP will need to be submitted to AC in support of the consent application.

6 ADDITIONAL CONSTRUCTION CONSIDERATIONS

6.1 Solid Waste Management Earthworks associated with the project is likely going to result in the generation of excess soil. Reuse of soil on site will be limited by the available land, and disposal of spoil to an authorised facility may be required. Any excess soil should be tested in a laboratory to determine the most suitable disposal options and to gain acceptance at these disposal facilities. Laboratory analysis will enable the soils to be classified as either clean fill, managed fill, or hazardous material (as defined by the AUP).

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A CSMP will identify the procedures and measures required for the appropriate management of spoil during the earthworks phase.

6.2 Dewatering Groundwater is likely to be intercepted during some of the works. This will need specific consideration with regards to both management and disposal of the water. Potential acid generating geology is anticipated within the study area. Where this coincides with dewatering activity in excess of 0.5 m, then there is a risk of acid generation occurring from these materials. A design specific assessment should be undertaken to inform construction methodology and appropriate materials selection.

6.3 Earthworks Management A CSMP will be required to support the earthworks, which shall document minimum procedures and standards to be followed during the course of earthworks and construction to manage and/or remove the risks posed by soil contamination, including the potential for asbestos. Through implementation of the CSMP, the risk posed to site users (principally construction workers during redevelopment) and the surrounding environment (including human receptors) can be substantially reduced to an acceptable standard.

6.4 Safety in Design The potential for contaminated ground to be encountered should be considered through the safety in design process for this site.

7 CONCLUSIONS AND RECOMMENDATIONS

7.1 Conclusions Aurecon has been engaged by Waka Kotahi NZ Transport Agency to prepare a Preliminary Site Investigation (PSI) to direct methods associated with soil and water disturbance as a result of the proposed upgrades to State Highway (SH) 1 Motorway in the Stage 1 area. The PSI was undertaken to assess potential for contamination to exist as a result of current and historic activities. Based on the findings of the PSI, potential contamination source areas have been identified within and adjacent to the study area. Within the designation itself several potentially contaminating source areas have been identified associated with highway construction and infrastructure development; these include historical road run-off into storm water side water channels; bulk filling associated with highway construction and metallic paints used on overhead electricity pylons (along with the pylons themselves). Beyond the designation, source areas include, but are not limited to areas of filling, service stations, areas of horticulture, and various commercial and industrial activities including cement manufacturing, commercial printing and vehicle workshops. Several of these areas are considered a priority, as they are considered most likely to have resulted in impact to the neighbouring designation due to the nature of the contaminants and the scale of the potentially contaminating activities. A plan showing identified HAIL activities within the study area is presented in Attachment 1 PSI Drawings, as is a plan showing non-HAIL potential sources of contamination that may add to construction risk. As part of the investigation, a conceptual site model was completed, and a preliminary risk assessment was undertaken based on the available information. Based on this risk assessment it is considered likely that the site is suitable for the proposed land use as a highway corridor. However, controls will need to be implemented during construction to appropriately manage risks to construction workers, the environment and public health.

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The presence of contaminated material may also significantly affect suitability of material for re-use as structural or landscaping fill as part of the development works, and related to this, for handling and off-site disposal requirements. Health, safety, cost and programme risks associated with handling contaminated material can be reduced through completion of further investigations to characterise soil and groundwater conditions in advance of earthworks and construction commencing.

7.2 Recommendations Land contamination may affect works associated with the project. The project is likely to disturb ground containing elevated concentrations of contaminants as described by the Auckland Unitary Plan, Chapter E30. It is recommended that prior to the proposed upgrade works to SH1 within the Stage 1 area, intrusive investigations are conducted within the study area to better understand the contamination risk profile. Increased understanding of soil conditions is likely to minimise programme delays and associated costs. Potential acid generating geology is anticipated within the study area. A design specific assessment should be undertaken to inform construction methodology and appropriate materials selection. The presence of contaminated material may also have implications for off-site disposal of soil. Health, safety, cost and programme risks associated with handling contaminated material can be reduced through completion of further investigations to characterise soil conditions in advance of earthworks and construction commencing. The outcome of these investigations will inform materials management, health and safety requirements during construction activities, and whether any remedial activities are required to address contamination. There is potential that shallow groundwater may be affected by contamination within the proposed route. Any areas of planned dewatering should be clearly identified and where they are close to identified groundwater risk they should be investigated to better inform groundwater management practices. If in the event further information regarding the history of the site becomes available, or evidence of contamination is determined on site during earthworks, a SQEP should be consulted for further advice.

WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION A | PAGE 53

PSI ATTACHMENTS

Attachment 1 PSI Drawings

WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION A | PAGE 54

10800

10700

10600

10500

10400

10300

10200

10100

10000

9900

9800

9700

9600

9500

9400 NOTES: 9300 -LOCATIONS ARE APPROXIMATE - HISTORICAL EARTHWORKS ARE ANTICIPATED 9200 TO HAVE OCCURED (BEYOND THE AREAS OF

9100 POTENTIAL FILLING) ASSOCIATED WITH PAVEMENT CONSTRUCTION. DSI IS RECOMMENDED TO CONFIRM THIS. -AREAS OF POTENTIAL FILLING THAT OCCURED DURING HIGHWAY CONSTRUCTION SHOWN ARE INFERRED FROM HISTORICAL AERIAL PHOTOS AND OBLIQUE AERIAL PHOTOS. - LOCATIONS OF SIDE WATER CHANNELS ARE APPROXIMATE. -RIVER NAMES LAYER IS PROVIDED FROM AUCKLAND COUNCIL GEOMAPS LEGEND

CHAINAGE APPROXIMATE STUDY AREA 100 SH1 DESIGNATION GAS PIPELINE

SIDE WATER CHANNELS AREAS OF POTENTIAL FILLING

OVERHEAD PYLONS RIVER NAMES

SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 J HIND 1:5,000 A3 PROJECT FOR ISSUE WITH THE PRELIMINARYAPPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 1 OF 4 R COLVIN CONSTRUCTION RISK PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2391 - A 12200

12100

12000

11900

11800

11700

11600

11500

11400

11300

11200

11100

11000

NOTES:

10900 -LOCATIONS ARE APPROXIMATE - HISTORICAL EARTHWORKS ARE ANTICIPATED TO HAVE OCCURED (BEYOND THE AREAS OF

10800 POTENTIAL FILLING) ASSOCIATED WITH PAVEMENT CONSTRUCTION. DSI IS RECOMMENDED TO CONFIRM THIS. 10700 -AREAS OF POTENTIAL FILLING THAT OCCURED DURING HIGHWAY CONSTRUCTION SHOWN ARE INFERRED FROM HISTORICAL AERIAL PHOTOS 10600 AND OBLIQUE AERIAL PHOTOS. - LOCATIONS OF SIDE WATER CHANNELS 10500 ARE APPROXIMATE. -RIVER NAMES LAYER IS PROVIDED 10400 FROM AUCKLAND COUNCIL GEOMAPS

10300 LEGEND

10200 CHAINAGE APPROXIMATE STUDY AREA 100 SH1 DESIGNATION GAS PIPELINE

SIDE WATER CHANNELS AREAS OF POTENTIAL FILLING

OVERHEAD PYLONS RIVER NAMES

SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 J HIND 1:5,000 A3 PROJECT FOR ISSUE WITH THE PRELIMINARYAPPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 2 OF 4 R COLVIN CONSTRUCTION RISK PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2392 - A 00

13800

13700

13600

13500

13400

13300

13200

13100

13000

12900

12800

12700

12600

12500

12400 NOTES: -LOCATIONS ARE APPROXIMATE - HISTORICAL EARTHWORKS ARE ANTICIPATED 12300 100 TO HAVE OCCURED (BEYOND THE AREAS OF POTENTIAL FILLING) ASSOCIATED WITH PAVEMENT CONSTRUCTION. DSI IS 12200 RECOMMENDED TO CONFIRM THIS. -AREAS OF POTENTIAL FILLING THAT OCCURED DURING HIGHWAY CONSTRUCTION SHOWN ARE

12100 INFERRED FROM HISTORICAL AERIAL PHOTOS AND OBLIQUE AERIAL PHOTOS. - LOCATIONS OF SIDE WATER CHANNELS ARE APPROXIMATE. 12000 -RIVER NAMES LAYER IS PROVIDED FROM AUCKLAND COUNCIL GEOMAPS

11900 LEGEND CHAINAGE APPROXIMATE STUDY AREA 100 11800 SH1 DESIGNATION GAS PIPELINE

SIDE WATER CHANNELS AREAS OF POTENTIAL FILLING 11700 OVERHEAD PYLONS RIVER NAMES

SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 J HIND 1:5,000 A3 PROJECT FOR ISSUE WITH THE PRELIMINARYAPPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 3 OF 4 R COLVIN CONSTRUCTION RISK PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2393 - A 13900

14000

00

13800 100

13700

13600

13500

200

13400

13300

NOTES: -LOCATIONS ARE APPROXIMATE - HISTORICAL EARTHWORKS ARE ANTICIPATED TO HAVE OCCURED (BEYOND THE AREAS OF POTENTIAL FILLING) ASSOCIATED WITH PAVEMENT CONSTRUCTION. DSI IS RECOMMENDED TO CONFIRM THIS. -AREAS OF POTENTIAL FILLING THAT OCCURED DURING HIGHWAY CONSTRUCTION SHOWN ARE INFERRED FROM HISTORICAL AERIAL PHOTOS AND OBLIQUE AERIAL PHOTOS. - LOCATIONS OF SIDE WATER CHANNELS ARE APPROXIMATE. -RIVER NAMES LAYER IS PROVIDED FROM AUCKLAND COUNCIL GEOMAPS LEGEND

CHAINAGE APPROXIMATE STUDY AREA 100 SH1 DESIGNATION GAS PIPELINE

SIDE WATER CHANNELS AREAS OF POTENTIAL FILLING

OVERHEAD PYLONS RIVER NAMES

SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 J HIND 1:5,000 A3 PROJECT FOR ISSUE WITH THE PRELIMINARYAPPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 4 OF 4 R COLVIN CONSTRUCTION RISK PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2394 - A RAY SMALL DRIVE H A N O V E R P LA C E

RAY SMALL RAY

DRIVE

R O S E H IL L D R IV E

E L L IO T S T R E E T

GYPSY MOTH

CHICHESTER DRIVE PLACE ERCEG WAY ERCEG WAY 10600

BEACH ROAD

BARNHILL CRESCENT BARNHILL

10500

D U M A S P LA C E

10400

10300 AUCKLAND-HAMILTON 10200 MOTORWAY B E X LE Y P LA C E

10100

10000

B E X LE Y P LA C E 9900

9800

9700 A17

9600

HILLDENE ROAD HILLDENE

9500 A13 ROAD HINGAIA

9400

9300 A10 NOTES: -LOCATIONS ARE APPROXIMATEHINAU ROAD 9200 -HAILS SHOWN ARE THOSE IDENTIFIED WITHIN THE STUDY

9100 AVENUE FOUNTAIN AREA. -RIVER NAMES LAYER IS SOURCED F7 FROM AUCKLAND COUNCIL GEOMAPS

A N C H O R A G E D R IV E H A R B O U R S ID E D R IV E LEGEND A10 SH1 DESIGNATION APPROXIMATE STUDY AREA CHAINAGE 100 PSI POTENTIAL HAIL ACTIVITIES A - CHEMICAL MANUFACTURE, APPLICATION AND BULK STORAGE D - METAL EXTRACTION, REFINING AND REPROCESSING E - MINERAL EXTRACTION, REFINING AND REPROCESSING, STORAGE AND USE F - VEHICLE REFUELLING, SERVICE AND REPAIR G - CEMETERIES AND WASTE RECYCLING, TREATMENT AND DISPOSAL RIVER NAMES SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, GAS PIPELINE AEROGRID, IGN, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 FOR ISSUE WITH THE PRELIMINARY J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 1 OF 4 R COLVIN HAIL PLAN PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2381 - A TAONUI 12100 F7 12000 STREET AVENUE SUNNYPARK ROYSTON STREET ROYSTON

11900

ORCHARD RISE ORCHARD G O O D W IN D R IV E 11800 R O Y A L A R C H P LA C E

11700

TATARIKI STREET TATARIKI

11600 E D IN B U R G H A V E N U E MARYBETH PLACE JO A N N E P LA C E F4 G5 11500

11400 A10 TAIRERE CRESCENT TAIRERE

11300

JUPITER STREET JUPITER

11200 ROAD ESTATE PARK

11100

C H IC H E S T E R D R IV E

11000

A10 AUCKLAND-HAMILTONMOTORWAY NOTES: 10900 -LOCATIONS ARE APPROXIMATE -HAILS SHOWN ARE THOSE IDENTIFIED WITHIN THE STUDY

10800 AREA. -RIVER NAMES LAYER IS SOURCED FROM AUCKLAND COUNCIL GEOMAPS GYPSY MOTH PLACE 10700

10600 LEGEND

SH1 DESIGNATION

10500 APPROXIMATE STUDY AREA CHAINAGE

10400 100 PSI POTENTIAL HAIL ACTIVITIES A - CHEMICAL MANUFACTURE, APPLICATION AND BULK STORAGE D - METAL EXTRACTION, REFINING AND REPROCESSING

P A R K G R E E N A V E NE - UMINERAL E EXTRACTION, REFINING AND REPROCESSING, STORAGE AND USE PORT WAY PORT F - VEHICLE REFUELLING, SERVICE AND REPAIR A17 G - CEMETERIES AND WASTE RECYCLING, TREATMENT AND DISPOSAL RIVER NAMES SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, GAS PIPELINE AEROGRID, IGN, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 FOR ISSUE WITH THE PRELIMINARY J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 2 OF 4 R COLVIN HAIL PLAN PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2382 - A SUTTON ROAD

MIRO STREET MIRO F IR T H S T R E E T

CROSS STREET

E1 E3 A17 C R E E K S T R E E T A17 A17 E1 F4 G6 F4 G5 A18 A17 E3 A15

13600

A17 13500

13400

13300 G R E A T S O U T H R O A D 13200 G6 13100

13000

12900

12800 G5

12700

12600

DRUMKEEN PLACE DRUMKEEN K ILM A C R E N N A N D R IV E 12500

12400

NOTES: -LOCATIONS ARE APPROXIMATE P A R K H A V E N D R IV E -HAILS SHOWN ARE THOSE 12300 100 IDENTIFIED WITHIN THE STUDY AREA. -RIVER NAMES LAYER IS SOURCED

12200 FROM AUCKLAND COUNCIL GEOMAPS

12100 LEGEND F7 SH1 DESIGNATION AUCKLAND-HAMILTON MOTORWAY APPROXIMATE STUDY AREA 12000 CHAINAGE 100 PSI POTENTIAL HAIL ACTIVITIES AHUNGA ROAD A - CHEMICAL MANUFACTURE, APPLICATION AND BULK STORAGE D - METAL EXTRACTION, REFINING AND REPROCESSING KAHUI PARADE

11900 E - MINERAL EXTRACTION, REFINING AND REPROCESSING, STORAGEB R AND E M USE N E R R O A D F - VEHICLE REFUELLING, SERVICE AND REPAIR TIDAL G - CEMETERIES AND WASTE RECYCLING, TREATMENT AND DISPOSAL F O R E S H O RVIEW E LA N E RIVER NAMES TIAKI LANE SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) WAKA ROAD AMA GAS PIPELINE OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, ROAD

ROAD

AEROGRID, IGN, AND THE GIS USER COMMUNITY HURINGA

G5 WERI ROAD 125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 FOR ISSUE WITH THE PRELIMINARY J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 3 OF 4 R COLVIN HAIL PLAN PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2383 - A CAMERON PLACE

NORRIE ROAD FLANAGAN ROAD

F IR T H S T R E E T G5 E1 A17 A10, A10 & D5 A4

GREAT SOUTH ROAD SOUTH GREAT

C R E E K S T R E E T F4 & A17 D5 F4 F4 F3 AUCKLAND-HAMILTON A10

14000 A17 A17 E3 13900 MOTORWAY A17 E1 F4 100 G5 A18 A15 13800

200 STATE HIGHWAY 22 A17 E3 13700 VICTORIA

13600 STREET G2 A17 F4 13500 G5 A10

G5 MERCER MERCER STREET STREET NOTES: -LOCATIONS ARE APPROXIMATE -HAILS SHOWN ARE THOSE G5 BREMNER ROAD BREMNER IDENTIFIED WITHIN THE STUDY AREA. -RIVER NAMES LAYER IS SOURCED FROM AUCKLAND COUNCIL GEOMAPS

LEGEND

SH1 DESIGNATION APPROXIMATE STUDY AREA CHAINAGE 100 PSI POTENTIAL HAIL ACTIVITIES A - CHEMICAL MANUFACTURE, APPLICATION AND BULK STORAGE D - METAL EXTRACTION, REFINING AND REPROCESSING E - MINERAL EXTRACTION, REFINING AND REPROCESSING, STORAGE AND USE F - VEHICLE REFUELLING, SERVICE AND REPAIR G - CEMETERIES AND WASTE RECYCLING, TREATMENT AND DISPOSAL RIVER NAMES SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, GAS PIPELINE AEROGRID, IGN, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 FOR ISSUE WITH THE PRELIMINARY J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 4 OF 4 R COLVIN HAIL PLAN PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2384 - A RAY SMALL

DRIVEH A N O V E R P LA C E

RAY SMALL RAY

DRIVE

R O S E H IL L D R IV E

E L L IO T S T R E E T

GYPSY MOTH

CHICHESTER DRIVE PLACE ERCEG WAY

ERCEG WAY 63R CHICHESTER DRIVE 10600

BEACH ROAD

BARNHILL CRESCENT BARNHILL 59 CHICHESTER DRIVE 10500 19 DUMAS D U M A S P LA C E 72 HINAU PLACE 10400 ROAD

10300

118 BEACH B E X LE Y P LA C E ROAD AUCKLAND-HAMILTON MOTORWAY10200 10100

10000 13 BEXLEY PLACE

B E X LE Y P LA C E 9900

9800

9700 HILLDENE ROAD 10 HINAU ROAD

9600 15 HINGIA

HINGAIA ROAD HINGAIA 9500 ROAD

9400

9300 5 HARBOURSIDE DRIVE

9200

HINAU ROAD 9100 FOUNTAIN AVENUE FOUNTAIN NOTES: 47 HARBOURSIDE -LOCATIONS ARE APPROXIMATE 113 DRIVE HARBOURSIDE DRIVE -NZ PROPERTY TILES LAYER HARBOURSIDE A N C H O R A G E D R IV E DRIVE WAS SOURCED FROM LINZ. -PROPERTY FILES WERE ORDERED FOR THOSE PROPERTIES HIGHLIGHTED IN RED. - AC RECORDS WERE REQUESTED FOR THE STUDY AREA. -RIVER NAMES LAYER WAS SOURCED FROM AUACKLAND COUNCIL GEOMAPS LEGEND

SH1 DESIGNATION PROPERTY TITLES

APPROXIMATE STUDY AREA RIVER NAMES

CHAINAGE APPROXIMATE WALKOVER EXTENT 100 SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 FOR ISSUE WITH THE PRELIMINARY J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 1 OF 4 R COLVIN STUDY AREA EXTENTS PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2301 - A TAONUI STREET AVENUE SUNNYPARK 12000

ROYSTON STREET ROYSTON

53 PARKHAVEN ROAD 11900

ORCHARD RISE ORCHARD G O O D W IN D R IV E 38V PARK 11800 ESTATE ROAD 45 PARKHAVEN R O Y A L A R C H P LA C E DRIVE

11700

TATARIKI STREET TATARIKI

E D IN B U R G H A V E N U E 11600 18/46 PARK

JOANNE PLACE JOANNE ESTATE ROAD 144 PARK ESTATE ROAD 11500 1/57 2/57 MARYBETH PLACE MARYBETH 57 PARK ESTATE ROAD 11400

TAIRERE CRESCENT TAIRERE

JUPITER STREET JUPITER 11300

PARK ESTATE ROAD ESTATE PARK

AUCKLAND-HAMILTONMOTORWAY11200

11100 119 CHICHESTER 115 PARK DRIVE ESTATE RD C H IC H E S T E R D R IV E

11000

10900

10800 NOTES: -LOCATIONS ARE APPROXIMATE GYPSY MOTH PLACE -NZ PROPERTY TILES LAYER 10700 WAS SOURCED FROM LINZ. -PROPERTY FILES WERE 63R CHICHESTER ORDERED FOR THOSE PROPERTIES DRIVE 10600 HIGHLIGHTED IN RED. 59 CHICHESTER - AC RECORDS WERE REQUESTED DRIVE FOR THE STUDY AREA. 10500 -RIVER NAMES LAYER WAS SOURCED FROM AUACKLAND COUNCIL GEOMAPS 10400 72 HINAU ROAD LEGEND

SH1 DESIGNATION PROPERTY TITLES

P A R K G R E E N A VAPPROXIMATE E N U E STUDY AREA RIVER NAMES PORT WAY PORT CHAINAGE 10 HINAU ROAD APPROXIMATE WALKOVER EXTENT 100 SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 FOR ISSUE WITH THE PRELIMINARY J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 2 OF 4 R COLVIN STUDY AREA EXTENTS PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2302 - A SUTTON ROAD

MIRO STREET MIRO F IR T H S T R E E T

CROSS STREET

70 FIRTH STREET C R E E K S T35 R CREEK E E T STREET 23-33 CREEK 135 137 GREAT 19 CREEK STREET SOUTH ROAD STREET

13600

5 CREEK 13500 STREET 13400 G R E A T S O U T H R O A D 13300 599 GREAT 13200 2R CREEK ST SOUTH ROAD 13100 597 GREAT 13000 SOUTH ROAD 33 BREMNER 12900 ROAD 27 BREMNER ROAD 31 BREMNER 589R GREAT 12800 ROAD SOUTH ROAD AUCKLAND-HAMILTONMOTORWAY 12700

12600

DRUMKEEN PLACE DRUMKEEN K ILM A C R E N N A N D R IV E 12500

105 12400 PARKHAVEN DRIVE P A R K H A V E N D R IV E 12300 100

NOTES: -LOCATIONS ARE APPROXIMATE 12200 -NZ PROPERTY TILES LAYER WAS SOURCED FROM LINZ. 53 PARKHAVEN -PROPERTY FILES WERE ROAD 12100 ORDERED FOR THOSE PROPERTIES 144 PARK HIGHLIGHTED IN RED. ESTATE ROAD - AC RECORDS WERE REQUESTED FOR THE STUDY AREA. 12000 -RIVER NAMES LAYER WAS SOURCED FROM AUACKLAND COUNCIL GEOMAPS LEGEND AHUNGA ROAD

SH1 DESIGNATION PROPERTY TITLES KAHUI PARADE

B R E M N E R R O A D 11900 APPROXIMATE STUDY AREA RIVER NAMES

TIDAL CHAINAGE APPROXIMATE WALKOVER EXTENT F O R E S H O R E LA N E VIEW 100 TIAKI LANE SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP WAKA ROAD AMA CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER ROAD ROAD COMMUNITY HURINGA

WERI ROAD

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 FOR ISSUE WITH THE PRELIMINARY J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 3 OF 4 R COLVIN STUDY AREA EXTENTS PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2303 - A CAMERON PLACE

NORRIE ROAD FLANAGAN ROAD

10 FIRTH F IR T H S T R E E T STREET 10R KARAKA 168 305 GREAT ROAD DRURY FLANAGAN SOUTH ROAD ROAD 190 20 FIRTH FLANAGAN RD 301 GREAT 38 NORRIE STREET 180 FLANAGAN SOUTH ROAD ROAD ROAD

GREAT SOUTH ROAD SOUTH GREAT

C R E E K S T R E E T 81 CREEK 87 CREEK STREET 69 CREEK STREET STREET 51 CREEK 23-33 CREEK AUCKLAND-HAMILTON 68 PITT ROAD 35 CREEK STREET 13900 14000 STREET STREET 100 MOTORWAY 13800

STATE HIGHWAY 22 19 CREEK 00 13700

200 STREET 13600 30 MERCER VICTORIA STREET STREET 13500 18 VICTORIA STREET 60 MERCER 24 MERCER STREET 27 BREMNER STREET ROAD MERCER STREET

33 BREMNER 31 BREMNER MERCER ROAD ROAD STREET 20 VICTORIA

BREMNER ROAD BREMNER STREET DRURY

NOTES: -LOCATIONS ARE APPROXIMATE -NZ PROPERTY TILES LAYER WAS SOURCED FROM LINZ. -PROPERTY FILES WERE ORDERED FOR THOSE PROPERTIES HIGHLIGHTED IN RED. - AC RECORDS WERE REQUESTED FOR THE STUDY AREA. -RIVER NAMES LAYER WAS SOURCED FROM AUACKLAND COUNCIL GEOMAPS LEGEND

SH1 DESIGNATION PROPERTY TITLES

APPROXIMATE STUDY AREA RIVER NAMES

CHAINAGE APPROXIMATE WALKOVER EXTENT 100 SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY, SOURCE: ESRI, DIGITALGLOBE, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 13.12.19 FOR ISSUE WITH THE PRELIMINARY J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY SITE INVESTIGATION DRAWN R COLVIN DATE STAGE 1 - PRELIMINARY SITE INVESTIGATION DESIGNED 10.12.19 TITLE SHEET 4 OF 4 R COLVIN STUDY AREA EXTENTS PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0310 - DRG - GG - 2304 - A

Attachment 2 Walkover Description and Photographs Table 0-1 Table Summarising Observations during the Site Walkover

Chainage Highway Surrounding Land Use

9000-10200 The highway has two traffic lanes in both directions, and a grassed Residential properties are present east and west of the designation; residential properties of median. Additional lanes (extensions of the on/off ramps) are added on Harbourside Drive in the west, and Lakeside Drive, Barnhill Crescent and Bexley Place in the approach to Papakura Interchange, which itself comprises on/off ramps east. On approach to the intersection, to the west, there is the Karaka Learning centre and abutments linking the highway with Beach Road (east) and Hingaia (kindergarten), a lot with a gas substation station where two stacks were observed (15 Road (west). The highway passes under Beach Road (2 lane bridge). Hilldene Road, adjacent to the highway), and a Z Service Station (47 Harbourside Drive, Within the loop ramps are attenuation ponds. Large electricity pylons 200m), off Hingaia Road (Photograph 1). are present within the designation.

10200-11400 There is a northbound off ramp, after which the highway returns to two Residential properties are present east of the designation along Dumas Place and then traffic lanes in both directions. The highway traverses broad lowland. Chichester Drive. A small park / reserve is located at 63R Chichester Drive. The residences The highway has shoulders, roadside vegetation and large grassed are generally single storey bungalow type dwellings, separated from the highway by a timber berms, which drop away from the lanes, and are used for drainage fence. retention and soakage. Overhead electricity pylons are present To the west is New Zealand Bloodstock (an equestrian centre, 10-40 Hinau Road) - some adjacent to the northbound carriageway. minor earthworks were observed in the north of this lot during the walkover (Photograph 2). Further south at 72 Hinau Road the previously undeveloped rural lot is undergoing earthworks for residential development, and further south again at 115 Park Estate Road is a large rural lot with a residence, a number of outbuildings and some external stockpiling (Photograph 4). A small heritage residence is associated with 115. In the north of this lot, adjacent to the highway is a Vodafone monopole (cell tower).

11400-12600 The highway passes under Park Estate Road Bridge (Photograph 3). West of the highway, just south of the bridge is an area of low lying, rural, undeveloped land The bridge forms an urban rural interface between residential Rosehill at 144 Park Estate Road. The northern most portion, adjacent to Park Estate Road is to the east and rural land in the west. The bridge only carries local undergoing earthworks, a burn-pit was noted (Photograph 5 and 6). There are some mounds traffic and consists of two traffic lanes only. The elevation of the within the centre of this property – visible from the highway, possibly additional soil from the highway declines towards the south, in the direction of Otūwairoa construction of the highway services. Unnamed watercourses also cross this property flowing (Slippery Creek). Just west of the carriageway, south of the bridge is a towards Drury Creek. East of the highway, just south of Park Estate Bridge is a new substation in the verge. In the east, just south of the bridge there is an residential development (46 Park Estate Road), Park Estate School and playing fields (38V off-ramp for the southbound carriageway to the highway services. The Park Estate Road), and residential properties of Parkhaven Road. At 53 Parkhaven Road is off-ramp is constructed along the edge of a depression and is held by a a highway services, which includes BP Services, Wild Bean Cafe, Autobahn Cafe, ANZ and retaining wall. Approximately 500m further south there is a highway on- Mohair Possum Store. The BP Services comprises automotive fuelling, with separate areas ramp back. Again, there are large grassed verges, used for drainage. for cars and trucks. There are ten fuel pumps in the car forecourt, and six in the truck Scruffy domes were noted in the grassed berm between the highway forecourt. Hazardous substance storage is likely to comprises LPG, and petrol and diesel and the services (Photographs 11 and 12). South of Park Estate Road underground storage tanks (USTs). The BP also has designated waste storage areas. The the motorway traverses a depression in the landscape extending from services are surrounded on three sides by gently hummocky slopes with high vegetation the existing motorway service station westwards to Drury Creek. (Photographs 7-10, 13)

WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION A | PAGE 55

12600-13200 The highway continues south passing over Otūwairoa (Slippery) Creek. East of the highway is Hulls Reserve (attenuation ponds), an undeveloped lot present just Slippery Creek bridge has two traffic lanes and a shoulder per direction. north of Otūwairoa (Slippery Creek) (599 Great South Road), the creek itself, and Otūwairoa The northbound and southbound lanes split temporarily as they pass (Slippery Creek) reserve which includes a boat launch area and grassed picnic area are over the creek. Large grassed berms are present in both directions raised above the creek. Within the reserve is a pump station for waste water (sewage) once the highway crosses the creek. Properties adjacent to the east of (Photographs 14-17). Adjacent to the small reserve is Kans Auto Shop, which does the highway are elevated above the highway, suggesting they have mechanical and electrical repairs - external storage of tyres and equipment was observed been raised, as the road is at a similar elevation to land to the west. (135 Great South Road) (Photograph 18). The water within the creek was observed to be murky, and the creek itself is lined by gabion baskets, and grassed river banks. Once the highway has crossed south, over the creek it enters the Opaheke peninsula. To the east, the northern most part of the peninsula is a grassed reserve on the banks of the creek (2R Creek Street) with a wastewater pumping station. further south is the Fletchers storage yard (5 Creek Street). Fletchers yard is a large, paved area used to store equipment used in construction and earthworks, it is likely that vehicle and equipment maintenance is undertaken. To the west, the property at 144 Park Estate Road extends south towards Otūwairoa (Slippery Creek). South of the creek the land at Opaheke peninsula is undeveloped and is known as P22 (mana whenua). In the north this is predominantly marsh land, further south is 27 Bremner Road, which is also undeveloped, vegetated and low lying.

13200-13740 The highway remains in a two lane per direction configuration, with a In the east is the Drury industrial estate, this is elevated above the highway, connected to it shoulder and large grassed and vegetated berms. by a steep grassed embankment. The estate is generally paved, with limited soft stand. This estate comprises numerous industrial / commercial units fronting onto the highway along Creek Street, including; -Atlas Buildings Removal - observed to store removed houses for re-sale (70 Firth St) (Photograph 19), -Concrete facility / Max Birt Sawmills - observed as storing wood and large containers, concrete mixing infrastructure and numerous concrete blocks and raw materials (15-19 Creek St) (Photographs 20-22), -Multi-commercial unit including a print works, look floors and a rug warehouse - extraction vents were observed, considered likely to be associated with the print works (23-31 Creek St) (Photographs 23-24), -Jacobs Demolition – previous buildings have recently been demolished, the lot was observed to store demolition material, equipment, machinery and Intermediate Bulk Containers (IBCs) of unknown liquids (35 Creek Street) (Photographs 25-26), -Counties Ready Mix - concrete aggregate storage yard and mixing facility, with chemical store, mixing infrastructure and trucks (51 Creek St) (Photographs 27-28). In the west, the undeveloped land / reserve of 27 Bremner Road continues south to Bremner Road. In the south of the peninsula (north of Bremner Road), there are additional lots just west of 27; 31 and 33 Bremner Road. These rural lots have residences and other farm associated outbuildings. The Ngakoroa Stream is present just west of this peninsula.

13740-00 The highway passes under SH1 Bremner Road Overbridge The Drury Industrial estate continues south of Bremner Road; (Stage 2) (Photograph 38-39). The highway is at a lower elevation than its -Multi-commercial unit - including high-tech motorsport vehicle workshop, HEB construction, surroundings (Photograph 40). The roadside grassed verges to the drilling specialist and storage (69 Creek Street) (Photographs 29 and 30),

WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION A | PAGE 56

west were observed to have dark coloured, exposed soil (Photographs -Auckland Motorhomes, with many motorhomes parked within the lot (81 Creek Street) 41 and 42). After the bridge, additional lanes (extensions of the on/off (Photograph 31), ramps) are added on approach to Drury Interchange, these then split -Skilton Truck Parts - truck parts and vehicle maintenance activities observed on site (87 off from the highway, with grassed verges separating them from the Creek Street) (Photograph 32), highway, and connect with Great South Road. The overhead -a church and a warehouse labelled Scania including equipment storage, and truck parking. powerlines cross the highway around 13940 to 14040. Some earthworks and material stockpiling was observed in this lot (38 Norrie Road) (Photographs 33-36), -Commercial unit including a Horticulture Centre and a Benchtop manufacturers (20 Firth Street) (Photograph 37), - Keith Hay Homes – storage of relocatable homes and building materials, construction yard (10 Firth Street, 301, 305 Great South Road). To the west, south of Bremner Road is Drury Sports Complex (20 Victoria Street) which comprises a number of sports fields. Earthworks are being undertaken further west associated with residential redevelopment, and as such there is traffic management in this area. The sports complex comprises numerous sports fields and is located adjacent to Ngakoria Stream. The sports field is raised above surrounding the environment and is undulating under foot, which is indicative of filling. Standing water was observed on the fields. (Photographs 43-49) Victoria Street runs parallel to the highway just east of the sports field. The verge between Victoria Street and the highway forms the lot 18 Victoria Street.

00 Stage 2 – The highway is bridged over Great South Road, and the railway tracks; In the east, just south of Great South Road is Karaka Reserve (10R Karaka Road), which 300 (Stage 2) as such it is elevated above the surroundings. Further south between runs parallel and between Great South Road and the North Island Main Trunk (NIMT) double CC100 and 300 the interchange on/off ramps join the highway. tracked railway tracks. Karaka Reserve is an undeveloped, overgrown, undulating lot with a creek / ditch trending through the centre of it (Photographs 54-55). Flanagan Road runs east of and parallel to the highway, just south of the rail tracks, three properties are present adjacent to the highway in this location; 168, 180 and 190 Flanagan Road which appear to comprise residences and farms on the banks of the Hingaia river. The lot at 190 has a tin warehouse style unit likely used for storage. In the west, south of Great South Road, and north of NIMT is Mercer Street, three properties are adjacent to the highway; 24, 30 and 60 Mercer Street. 30 Mercer Street contains a residence and storage units, which were observed to include numerous drums, machine parts, and had hazmat signs ‘flammable liquid’ (Photograph 50-51). Numerous trucks are present fronting the highway in 30 Mercer Street, with a sign saying truck and trailer sales (Photograph 52). 60 Mercer Street comprises a large white building, some additional external buildings and vehicles (Photograph 53). 160 Pitt Road is located just south of the railway tracks and comprises a grassed open lot.

WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION A | PAGE 57

Attachment 3 Auckland Council Information

WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION A | PAGE 58

7 November 2019

Aurecon PO Box 9762 Newmarket Auckland 1149 Attention: Rebecca Colvin

Dear Rebecca

Site Contamination Enquiry – State Highway between Papakura & Drury Interchange

This letter is in response to your enquiry requesting available site contamination information for the above site. The following details are based on information available from the former Auckland Regional Council records system. The details provided below exclude any property information held by the former district/city councils.

The general catchment file and site visit file for the catchment 731, 732 and 738 were not searched. These files contain pollution incidents where the source of pollution was not traced to a particular site, site visits where no follow-up correspondence was required and some information from archived files.

If the above site is coastal or beside a river, it is possible that historic, unconsented reclamation may have occurred. The Auckland Council Specialists Unit Coastal Team may be able to provide further information.

The records reviewed as part of this Site Contamination Enquiry search do not identify individual horticultural sites in the region. However, there is a possibility that horticultural activities may have occurred at the site. The local Auckland Council customer service centre, specific to the area of the site may be able to provide relevant information where former horticultural sites have been mapped.

If you are concerned that a historic land use (such as filling) may have caused the underlying soils to become contaminated, it is recommended that you obtain an independent environmental assessment of the site. Staff from the Auckland Council Contaminated Air, Noise Team can provide advice on the results of any evaluation in terms of site remediation and/or potential consent requirements.

The former Auckland Regional Council was searched for records of closed landfills, bores, air discharge, industrial and trade process consents, contaminated site discharge consents, and environmental assessments within approximately 200 metres of the site. Relevant details of the pollution incidents and identified consents are appended to this letter as an excel spreadsheet. Please refer to the column labelled ‘Property Address’ and Incident/Consent/Bores ID (where applicable) on the attached spreadsheet to aid in identifying corresponding data on the map.

The details provided are in accordance with the obligation to make information publicly available upon request. While the Auckland Council has carried out the search using its best practical endeavours, it does not warrant its completeness or accuracy and disclaims any responsibility or liability in respect of the information. If you or any other person wishes to act or to rely on this information, or make any financial commitment based upon it, it is recommended that you seek appropriate technical and/or professional advice.

In addition, further site specific pollution incidents may be held at area office below. It is recommended that you contact the local customer service centre of the Auckland Council, specific to the site being investigated: 25 Coles Crescent, Papakura, as they also may hold files with further relevant information.

I trust that this answers your query. If you wish to discuss the matter further, please contact Andrew Kalbarczyk on 301 0101. Should you wish to request any of the files listed above for viewing, please contact the Auckland Council Call Centre on 301 0101 and note you are requesting former Auckland

Private Bag 92300, Victoria Street West, Auckland 1142 | aucklandcouncil.govt.nz | Ph 09 301 0101

2

Regional Council records (the records department requires three working days’ notice to ensure files will be available).

Please note: the Auckland Council cost recovers officer’s time for all site enquiries. A basic enquiry takes approximately 1 - 2.5 hours to search the files and databases in which information is held. As such an invoice for the time involved in this enquiry will follow shortly.

Yours sincerely

Pp FB

Jared Osman Team Leader – Contaminated Air, Noise Specialist Unit | Resource Consents

3

Please refer to the column labelled ‘Property Address’ and Incident/Consent/Bores ID (where applicable) on the attached spreadsheet to aid in identifying corresponding data on the map.

INCIDENTS 22/11/2019 Preliminary Site Investigation 506207-0310-REP-KF-0035

INCIDENTNUMXCOORD YCOORD NZTMXCOORD NZTMYCOORD LOCATION SUBURB CATCHMENPOLLUTANTTYPE RECIEVED REPORT INCIDENTTYPE ACTIONEDBY IMPACT VOLUME PROBLEMFOUND CULPRITTRACED RECORDDATE INVESTIGATIONDATE Southern 10/1606 1772348.8 5893675.6 1772348.76 5893675.57 Motorway Papakura 738 Hydrocarbon - Fuel / Diesel Hotline diesel spill, notification only Spill Nora Leuschner Potential <10 litres YES YES 26/04/2010 26/04/2010 14/2321 1772843.8 5891857.7 1772843.75 5891857.69 Bremner Rd Drury 731 Concrete Wastewater Other Concret Spill Not Significant Anita Sundararaj Potential Potential YES YES 25/06/2014 25/06/2014 13/2488 1772958.4 5891872.9 1772958.35 5891872.85 Bremner Rd Drury 731 Not Found / Nothing Other Dust Complaint Not Found Tim Butler Nil Nil NO YES 24/07/2013 24/07/2013 APPLICATIONS 22/11/2019 Preliminary Site Investigation 506207-0310-REP-KF-0035

APPLICATION_NU FILE_REF MBER ERENCE ACTIVITY APPLICANT APPLICATION_STATUS LODGED_DATE PROCESSING_OFFICER EASTING NORTHING ACTIVITY_ID ACTIVITY_STATUS ACTIVITY_DESCRIPTION SITE_NAME SITE_DESCRIPTION DATE_CREATED PROPERTY_ADDRESS LOC_TYP Discharge from a site historically decommissioning and refurbishing fuel tanks Eric for approx 10 yrs. Prior Contaminated Alexander land use agricultural and Sinclair -30 30 Mercer St Drury 28472 17001 Site Discharge Sinclair Lapsed 20040130 John O'Grady 1772860 5891300 20102 Occurring undeveloped. Mercer St 2/06/2017 Papakura Point BORES 22/11/2019 Preliminary Site Investigation 506207-0310-REP-KF-0035

CONSEN STATIC_WA CASING_ CONSENT_NU CONSENT_HOL T_STATU PROCESSING_OF WORKS_DESCRI ENVIRONMENT_R TOTAL_DEPT TER_LEVE DIAMETE CASING_F CASING DIAMETE MBER DER BORE_ID GRANTED_DATE EXPIRY_DATE S FICER PURPOSE PTION EASTING NORTHING ACTIVITY_STATUS LAND_USE LAND_USE_NOTE BORE_USE ACTIVITY_DESCRIPTION SITE_NAME SITE_DESCRIPTION MAIN_AQUIFER AQUIFER SUB_AQUIFER1 EPORTING AREA TLA DATE_DRILLED H L R_TO DIAMETER ROM _TO R CONSULTANT DATE_CREATED PROPERTY_ADDRESS LOC_TYP Construction of 3, 210mm diameter Authorise bores to a depth of construction approximately 5m. of 3 Installation of PVC groundwater Class E screens quality from 2m to Authorise construction of 3 Eric Alexander monitoring approximate depth Observation / groundwater monitoring Franklin Bombay West Tonkin & Taylor 30 Mercer St Drury 28502 Sinclair 21987 20031031 20041102 Expired Amy Boulton bores of 5m. 1772860 5891300 Proposed Piezo bores Waitemata Waitemata Waitemata Papakura Limited 20170601 Papakura Point

Spoke to owner Reynolds 6 Apr 2011. bore artesians Drilled pre-1987 for C and is used to supply DOBBS by NAIRN E & two houses for SON LTD. Location from Papakura 0 3923 1772810 5891957 Drilled Lifestyle drinking water needs Domestic 1989 Drury land use survey. Sand Sand Franklin 24 24 75 0 75 20170601 Point

To authorise the construction of up to six Observation / bores for groundwater 0 21995 1772858 5891306 Proposed Piezo quality monitoring purposes. Papakura 20170601 Point

To construct Assessme a bore for To construct a NZTA - nt geotechnical 100mm diameter Papakura Complete investigation bore to a depth of To construct a bore for Interchange State Highway One 52353 23547 20100202 d Reginald Samuel . approximately 25m. 1771418 5895211 Proposed Geotechnical geotechnical investigation. (SH1) Papakura AECOM Limited 20170601 Papakura Papakura Point

Authorise Construction of a the 100mm diameter construction bore to a depth of of a bore for approximately 80m. the Installation of extraction of appropriate casing groundwater to a minimum depth for stock and of 40m and domestic screens as Domestic/Sto Papakura 60 Mercer St Drury 23977 Felix Stubeli 21217 20000428 20010428 Expired Gillian Crowcroft supply. required. 1772890 5891180 Proposed ck Felix Stubeli 60 Mercer St, Drury Sand Sand South Auckland Papakura 20010428 85 4 0 79.5 20170601 Papakura Point

To authorise the construction of five bores with a casing diameter of 100 mm and a bore depth of 25m for geotechnical investigation and The construction of groundwater a 100mm diameter level bore to an To authorise the monitoring approximate depth construction of five bores for using 2 of 25m. Installation geotechnical investigation piezometers of Grade C PVC and groundwater level and a casing material to monitoring using 2 Papakura Interchange, hydrological an approximate piezometers and a SH1 Papakura 35600 Maunsell Limited 23132 20080320 20090324 Expired Reginald Samuel pump test. depth of 25m. 1771480 5895232 Proposed Other hydrological pump test. Maunsell Ltd Papakura 20170601 Papakura District Line CONSENTS 22/11/2019 Preliminary Site Investigation 506207-0310-REP-KF-0035

CONSENT_NUMBER FILE_REFERENCE ACTIVITY CONSENT_HOLDER CONSENT_STATUS GRANTED_DATE REVIEW_DATE EXPIRY_DATE PROCESSING_OFFICER PURPOSE WORKS_DESCRIPTION EASTING NORTHING ACTIVITY_ID ACTIVITY_STATUS ACTIVITY_DESCRIPTION SITE_NAME SITE_DESCRIPTION DATE_CREATED PROPERTY_ADDRESS LOC_TYP MONITORING_OFFICER PREVIOUS_INSPECTION_DATE NEXT_INSPECTION_DATE

To authorise the discharge To authorise the discharge of of contaminants into or onto Counties Ready Mix contaminants into or onto land or water land or water from concrete 51 Creek 51 Creek St Drury 46209 26879 Industrial or Trade Process Limited Issued 20160810 20170630 20510810 Hillary Johnston from concrete manufacturing activities. 1772905.9 5891887.46 337 Proposed manufacturing activities. Street 2/06/2017 Papakura Point Jos Fryer NIL NIL Discharge permit to discharge contaminants to air Discharge contaminants to from the mixing of air from the mixing of cement powder with cement powder with other other materials for the Counties Ready Mix To discharge contaminants into air from materials for the 51 Creek manufacture of 51 Creek St Drury 46219 26888 Discharge To Air Limited Issued 20160810 20170131 20260810 Vaughan Turner the manufacture of concrete. 1772905.9 5891887.46 20647 Proposed manufacture of concrete. Street concrete. 2/06/2017 Papakura Point Vaughan Turner NIL NIL To undertake earthworks, disturb contaminated land, and discharge Barry Phillips Holdings contaminants from land containing Remediation of 30 Mercer 30 Mercer St Drury 41047 23487 Contaminated Site Discharge Limited Surrendered 20121212 20171231 Helen Caley elevated levels of contaminants. 1772857 5891316 21335 Occurring contaminated soils on site. Street, Drury 2/06/2017 Papakura Point Helen Caley NIL NIL Construction of a 100mm diameter bore to a depth of approximately 80m. Installation of appropriate Authorise the construction of a bore for casing to a minimum the extraction of groundwater for stock depth of 40m and screens 60 Mercer St Drury 23977 C512-12-2568 Bore Felix Stubeli Expired 20000428 20010428 Gillian Crowcroft and domestic supply. as required. 1772890 5891180 21217 Proposed Felix Stubeli 60 Mercer St, Drury 2/06/2017 Papakura Point NIL NIL

Construction of 3, 210mm diameter bores to a depth of approximately 5m. Installation of PVC Class Authorise construction of 3 Authorise construction of 3 groundwater E screens from 2m to groundwater monitoring 30 Mercer St Drury 28502 C512-12-3189* Bore Eric Alexander Sinclair Expired 20031031 20041102 Amy Boulton quality monitoring bores approximate depth of 5m. 1772860 5891300 21987 Proposed bores 2/06/2017 Papakura Point NIL NIL

The construction of a To authorise the To authorise the construction of five 100mm diameter bore to construction of five bores for bores with a casing diameter of 100 mm an approximate depth of geotechnical investigation and a bore depth of 25m for geotechnical 25m. Installation of Grade and groundwater level investigation and groundwater level C PVC casing material to monitoring using 2 Papakura Interchange, monitoring using 2 piezometers and a an approximate depth of piezometers and a SH1 Papakura 35600 C512-12-4211* Bore Maunsell Limited Expired 20080320 20090324 Reginald Samuel hydrological pump test. 25m. 1771480 5895232 23132 Proposed hydrological pump test. Maunsell Ltd 2/06/2017 Papakura District Line NIL NIL From: Sam Brown To: Rebecca Colvin Subject: RE: GIS data requests for Papakura to Bombay Date: Wednesday, 6 November 2019 9:04:24 AM Attachments: ~WRD000.jpg image001.png image002.jpg image003.png image004.png image005.png image006.png image007.png image008.png image009.png RITM0128969.zip

Hi Rebecca,

Please find attached the results from the Contaminated Sites search from Papakura to Bombay.

The file contains GIS data and spreadsheet output. The HAIL info can be found in the PropertyNotesFromSAP tab, under the CONDITIONTYPECODE header.

If you need additional data for the same project in future, please let me know.

Thanks,

Sam

Samuel Brown | Geospatial Specialist Geospatial Team | Information Applications | ICT Auckland Council, Level 6, 135 Albert Street, Auckland 1010 Visit our website: www.aucklandcouncil.govt.nz

ICP

From: Rebecca Colvin Sent: Tuesday, 5 November 2019 9:30 PM To: GISDATA Subject: RE: GIS data requests for Papakura to Bombay

Hi Sam,

Thanks. Find attached.

Rebecca

Rebecca Colvin Senior Contaminated Land Specialist, Aurecon M +64 2 75826615 [email protected]

DISCLAIMER From: Sam Brown On Behalf Of GISDATA Sent: Tuesday, 5 November 2019 5:03 PM To: Rebecca Colvin Cc: Suyin Meijer Subject: FW: GIS data requests for Papakura to Bombay

Hi Rebecca,

Apologies for previous email – I attached a confidentiality agreement in error. Council Project licence agreement now attached.

Thanks,

Sam

Samuel Brown | Geospatial Specialist Geospatial Team | Information Applications | ICT Auckland Council, Level 6, 135 Albert Street, Auckland 1010 Visit our website: www.aucklandcouncil.govt.nz

ICP

From: Sam Brown On Behalf Of GISDATA Sent: Tuesday, 5 November 2019 5:01 PM To: Rebecca Colvin Cc: Suyin Meijer Subject: RE: GIS data requests for Papakura to Bombay

Hi Rebecca,

Thank you for your email.

Please can you complete and sign the attached Council Project licence agreement and return to me.

I will make a note of this request, and if you intend on requesting more data in the near future for the same project, you will not be required to sign an additional licence and I can provide you the data under the same request.

I can provide you with the Contaminated Sites data free of charge, but the groundwater bores and takes data supply is cost recoverable and will need to go through the Resource Consents team for approval. Please can you contact Suyin Meyer (cc’d) to arrange this.

Let me know if you have any questions.

Thanks,

Sam

Samuel Brown | Geospatial Specialist Geospatial Team | Information Applications | ICT Auckland Council, Level 6, 135 Albert Street, Auckland 1010 Visit our website: www.aucklandcouncil.govt.nz

ICP

From: Rebecca Colvin Sent: Tuesday, 5 November 2019 12:41 PM To: GIS Subject: FW: GIS data requests for Papakura to Bombay

Hello,

Could I please get the following data layers for the road corridor from Papakura interchange to Drury interchange plus a 200 m buffer, suitable for ArcMaps? I’ve attached a plan of the location

• HAIL sites • Closed landfills • Pollution incident records • Groundwater bore and water takes • Discharge consents • Resource consents .

Please let me know if you require any other information.

Kind regards, Rebecca Colvin

Rebecca Colvin Senior Contaminated Land Specialist, Aurecon M +64 2 75826615 [email protected] Level 4, 139 Carlton Gore Road, Newmarket, Auckland New Zealand 1023 PO Box 9762, Newmarket, Auckland 1149 aurecongroup.com

DISCLAIMER

CAUTION: This email message and any attachments contain information that may be confidential and may be LEGALLY PRIVILEGED. If you are not the intended recipient, any use, disclosure or copying of this message or attachments is strictly prohibited. If you have received this email message in error please notify us immediately and erase all copies of the message and attachments. We do not accept responsibility for any viruses or similar carried with our email, or any effects our email may have on the recipient computer system or network. Any views expressed in this email may be those of the individual sender and may not necessarily reflect the views of Council. Summary of Auckland Council results of the Contaminated Sites Search (Part 1) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Application for discharge from contaminated Address Lot Legacy bores Legacy applications all site Application for discharge from industrial trade North Bound 113 Harbourside Drive 1 Hingaia Auckland 2113 Lot 3 DP 369556 NR NR NR NR 5 Harbourside Drive 2 HINGAIA 2113 LOT 1 DP 528856 NR NR NR NR 15 Hingaia Road Hingaia 3 Auckland 2113 PT DP 4894 NR NR NR NR 47 Harbourside Drive 4 HINGAIA 2113 LOT 1000 DP 528856 NR NR NR NR File reference AG865246 Take (withdrawn) Date lodged: 03/07/1986 10 Hinau Road Hingaia To take or use groundwater for livestock sales 5 Auckland 2580 PT ALLOT 600 DP 386486 NR complex NR NR 72 Hinau Road Hingaia 6 Auckland 2113 Lot 601 DP 386486 NR NR NR NR File reference BR865279 Stormwater Discharge (withdrawn) Date lodged: 31/07/1986 THREE APPLICATIONS TO DIVERT & DISCHARGE STORMWATER FROM PAPAKURA CITY THROUGH THREE CULVERTS UNDER THE SOUTHERN MOTORWAY INTO THREE UNNAMED TRIBUTARIES OF DRURY CREEK. THESE ENLARGEMENTS ARE PROPOSED TO 115 Park Estate Road ALLEVIATE FLOODING WITHIN RESIDENTIAL 7 Hingaia Auckland 2113 ALLOT 30 Parish OF OPAHEKE NR AREAS. BR/527 NR NR 144 Park Estate Road 8 Hingaia Auckland 2113 ALLOT 434 Parish OF OPAHEKE NR NR NR NR No consent number given - location is just outside property boundary Drilled pre-1987 for C DOBBS by NAIRN E & SON LTD. Location from 1989 Drury land use survey. Spoke to owner Reynolds 6 Apr 2011. bore 27 Bremner Road Drury artesians and is used to supply two houses for 9 Auckland 2578 SEC 1 SO 395394 drinking water needs NR NR NR 33 Bremner Road Drury 10 Auckland 2578 ALLOT 383 Parish OF OPAHEKE NR NR NR NR Drilled pre-1987 for C DOBBS by NAIRN E & SON LTD. Location from 1989 Drury land use survey. Spoke to owner Reynolds 6 Apr 2011. bore 31 Bremner Road Drury Lot 4 DP 106093, ALLOT 400 Parish artesians and is used to supply two houses for 11 Auckland 2578 OF OPAHEKE drinking water needs NR NR NR 18 Victoria Street Drury Pt Lot 4 SEC 4 Parish OF OPAHEKE, 12 Auckland 2113 Pt Lot 5 SEC 4 Parish OF OPAHEKE NR NR NR NR Summary of Auckland Council results of the Contaminated Sites Search (Part 1) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Application for discharge from contaminated Address Lot Legacy bores Legacy applications all site Application for discharge from industrial trade 20 Victoria Street DRURY ALLOT 390 Parish OPAHEKE, PT 13 2113 ALLOT 47 Parish OPAHEKE NR NR NR NR 24 Mercer Street DRURY 14 2578 SECT 1 SO 510641 NR NR NR NR

Consent number 28502 (proposed) Consent granted 31/10/2003, expired 02/11/2004. Consent holder: Eric Alexander Sinclair Authorise construction of 3 groundwater quality monitoring bores Construction of 3, 210mm diameter bores to a Consent number 17001 Contaminated Site File reference 17001(lapsed) depth of approximately 5m. Installation of PVC Discharge (lapsed) Date lodged: 30/01/2004 Class E screens from 2m to approximate depth of Date lodged: 30/01/2004 Applicant: Eric Alexander Sinclair 5m. Applicant: Eric Alexander Sinclair Discharge from a site historically Second record: No consent number given Discharge from a site historically decommissioning and refurbishing fuel tanks for (proposed) decommissioning and refurbishing fuel tanks for approx 10 yrs. Prior land use agricultural and 30 Mercer Street Drury To authorise the construction of up to six bores approx 10 yrs. Prior land use agricultural and undeveloped. 15 Auckland 2578 Lot 1 DP 92474, SEC 1 SO 69741 for groundwater quality monitoring purposes. undeveloped. Into ground - full year NR

Consent number 33703 Bore (proposed) Consent granted 24/01/2007, expired 28/01/2008. Consent holder: Carlo Stubeli To authorise the construction of a bore for domestic supply. Construction of a 100mm diameter bore to an approximate depth of 80m. Installation of PVC casing material to an approximate depth of 60m.

Consent number 23977 Bore (proposed, just outside property boundary but noted as 60 Mercer street) Consent granted 28/04/2000, expired 28/04/2001. Consent holder: Felix Stubeli Authorise the construction of a bore for the extraction of groundwater for stock and domestic supply. Construction of a 100mm diameter bore to a depth of approximately 80m. Installation of 60 Mercer Street Drury appropriate casing to a minimum depth of 40m 16 Auckland 2578 Lot 2 DP 92474, SEC 1 SO 66956 and screens as required. NR NR NR PT ALLOT 38 Parish OF OPAHEKE, 68 Pitt Road Drury Auckland Lot 1 DP 502044, ALLOT 402 Parish 17 2578 OF OPAHEKE NR NR NR NR

South Bound 13 Bexley Place Papakura 19 Auckland 2113 Lot 36 DP 61513 NR NR NR NR Summary of Auckland Council results of the Contaminated Sites Search (Part 1) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Application for discharge from contaminated Address Lot Legacy bores Legacy applications all site Application for discharge from industrial trade 118 Beach Road Papakura 20 Auckland 2113 PT ALLOT 3 DP 14721 NR NR NR NR 15 Dumas Place Papakura 21 Auckland 2110 Lot 8 DP 488727 NR NR NR NR 19 Dumas Place Papakura 22 Auckland 2110 Lot 15 DP 488727 NR NR NR NR 17 Dumas Place Papakura 23 Auckland 2110 Lot 7 DP 488727 NR NR NR NR 63R Chichester Drive 24 Papakura Auckland 2113 Lot 31 DP 77147, Lot 32 DP 77147 NR NR NR NR 119 Chichester Drive 25 Papakura Auckland 2113 Lot 208 DP 60457 NR NR NR NR 2/57 Park Estate Road 26 Papakura Auckland 2113 Prin Unit B DP 78264, AU 2 DP 78264 1/57 Park Estate Road 27 Papakura Auckland 2113 Prin Unit A DP 78264, AU 1 DP 78264 NR NR NR NR 57 Park Estate Road 28 Papakura Auckland Lot 1 DP 77469 18/46 Park Estate Road Lot 18 DP 496450, 1/23 SH Lot 24 DP 29 Papakura Auckland 2113 496450 NR NR NR NR 38V Park Estate Road Pt Lot 7 DP 4963, PT ALLOT 311 30 Papakura Auckland Parish OF OPAHEKE NR NR NR NR 45 Parkhaven Drive LOT 5 DP 211045 - HAVE A 1/9 SH IN 31 Papakura Auckland 2113 LOT 9 DP 211045 NR NR NR NR 53 Parkhaven Drive LOT 10 DP 211045 - HAVE A 1/9 SH 32 Papakura Auckland 2113 IN LOT 9 DP 21104 NR NR NR NR 105 Parkhaven Drive 33 Papakura Auckland 2110 Lot 102 DP 473202 NR NR NR NR 589R Great South Road 34 Papakura Auckland 2113 Lot 1 DP 433619 NR NR NR NR 597 Great South Road 35 Papakura Auckland 2113 Lot 4 DP 198957 NR NR NR NR 599 Great South Road 36 Papakura Auckland 2113 Lot 5 DP 198957 NR NR NR NR 137 Great South Road Drury 38 Auckland 2579 1/2 SH Lot 1 DP 120070 NR NR NR NR 135 Great South Road Drury 1/2 SH Lot 1 DP 120070, Factory 1 DP 39 Auckland 2579 120070 NR NR NR NR 135-137 Great South Road 40 Drury Auckland Lot 1 DP 120070 NR NR NR NR Summary of Auckland Council results of the Contaminated Sites Search (Part 1) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Application for discharge from contaminated Address Lot Legacy bores Legacy applications all site Application for discharge from industrial trade 2R Creek Street Drury ALLOT 72 SEC 6 Village OF DRURY, 41 Auckland 2113 ALLOT 73 SEC 6 Village OF DRURY NR NR NR NR 5 Creek Street Drury 42 Auckland 2113 Pt Lot 3 DP 111728 NR NR NR NR 70 Firth Street Drury Drilled pre-1987 for FIRTH INDUSTRIES LTD 43 Auckland 2113 Lot 1 DP 111727 (BORE 1) by BROWN BROTHERS LTD. NR NR NR 19 Creek Street Drury Lot 1 DP 126843, PT LOT 2 DP 44 Auckland 2113 111729 NR NR NR NR ALLOT 340 Parish OF 23, 31, 33 Creek Street OPA+D49:D90HEKE, Lot 2 DP 45 DRURY 2113 116293, Lot 1 DP 116293, Lot 2 DP NR NR NR NR 33-35 Creek Street Drury 46 Auckland 2113 Lot 1 DP 163340 NR NR NR NR

Lot 7 SEC 3 Deeds Reg 35, Lot 8 SEC 3 Deeds Reg 35, Lot 9 SEC 3 Deeds Reg 35, Lot 10 SEC 3 Deeds Reg 35, Lot 11 SEC 3 Deeds Reg 35, Lot 12 File reference 21974 Stormwater Discharge (Not SEC 3 Deeds Reg 35, Lot 14 SEC 3 Accepted For Processing) Deeds Reg 35, Lot 13 SEC 3 Deeds Date lodged: 23/07/2010 51 Creek Street Drury Reg 35, Lot 15 SEC 3 Deeds Reg 35, To discharge stormwater from a proposed fuel 47 Auckland 2113 Lot 16 SEC 3 D NR storage and dispensing facility NR NR 69 Creek Street Drury 48 Auckland 2113 Lot 1 DP 201670 NR NR NR NR 81 Creek Street Drury 49 Auckland 2113 Lot 2 DP 201670 NR NR NR NR 87 Creek Street Drury 50 Auckland 2113 Lot 3 DP 201670 NR NR NR NR

LOT 11 SECT 5 PARO Opaheke, Lot 1 DP 41305, Lot 3 DP 41305, ALLOT 49 38 Norrie Road Drury SUBURBAN SEC 5 Parish OPAHEKE, 51 Auckland 2113 Lot 2 DP 41305 NR NR NR NR 10 Firth Street Drury 52 Auckland 2113 Lot 2 DP 130158 NR NR NR NR

File reference 9078 Discharge Other (withdrawn) Date lodged: 03/09/1999 Applicant: Bert Teubel Limited To discharge up to 15 cubic metres metres per day of acid-bath rinse-water into the Hingaia Stream. 20 Firth Street Drury Drilled pre-1987 for HAY KEITH HOMES by D/C up to 15 cmpd of acid-bath rinse-water into 53 Auckland 2113 Lot 1 DP 130158 NAIRN E & SON LTD. the Hingaia Stream NR NR 301 Great South Road Drury 54 Auckland 2579 ALLOT 339 Parish OF OPAHEKE NR NR NR NR Summary of Auckland Council results of the Contaminated Sites Search (Part 1) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Application for discharge from contaminated Address Lot Legacy bores Legacy applications all site Application for discharge from industrial trade 305 Great South Road Drury 55 Auckland 2579 Lot 1 DP 138213 NR NR NR NR 10R Karaka Road Drury SO 65144, SEC 1 SO 65144, PT 56 Auckland 2578 RAILWAY LAND SO 47014 NR NR NR NR 168 Flanagan Road Drury PT ALLOT 38 Parish OF OPAHEKE, 57 Auckland 2113 PT ALLOT 258 Parish OF OPAHEKE NR NR NR NR 180 Flanagan Road Drury 58 Auckland 2113 PT ALLOT 1 DP 47861 NR NR NR NR 190 Flanagan Road Drury 59 Auckland 2113 ALLOT 422 Parish OF OPAHEKE NR NR NR NR North Auckland Line, Auckland Region Railway Network NR NR NR NR North Auckland Line, Auckland Region Railway Network NR NR NR NR

Papakura interchange Western side of road corridor near 115 Park File reference: C512-12-4575 (proposed) Estate Road Consent granted: 02/02/2010 File reference BR865279 (withdrawn) To construct a bore for geotechnical investigation. Date lodged: 31/07/1986 File reference: C512-12-4211* (proposed) THREE APPLICATIONS TO DIVERT & Consent granted: 20/03/2008, expired: DISCHARGE STORMWATER FROM 24/03/2009 PAPAKURA CITY THROUGH THREE Consent holder: Maunsell Limited CULVERTS UNDER THE SOUTHERN To authorise the construction of five bores with a MOTORWAY INTO THREE UNNAMED casing diameter of 100 mm and a bore depth of TRIBUTARIES OF DRURY CREEK. THESE 25m for geotechnical investigation and ENLARGEMENTS ARE PROPOSED TO Southern Motorway groundwater level monitoring using 2 piezometers ALLEVIATE FLOODING WITHIN RESIDENTIAL Papakura - Drury Road corridor and a hydrological pump test. AREAS. BR/527 NR NR NOTES 1 No information pertaining to properties assessed in this PSI was identified in data provided by the Auckland Council GIS team under the categories "Contaminated sub types", "Possible contam records", "Property condition", "SIIED pollution"

2 "NR" indicates no records were found for the property Summary of Auckland Council results of the Contaminated Sites Search (Part 2) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Bore consents and water take consents Discharge consent (type from additional identified for individual Legacy permitted Property notes information provided Address Lot Legacy Consents All records) activity from SAP by Auckland Council North Bound 113 Harbourside Drive 1 Hingaia Auckland 2113 Lot 3 DP 369556 NR NR NR NR NR 5 Harbourside Drive 2 HINGAIA 2113 LOT 1 DP 528856 NR NR NR NR NR 15 Hingaia Road Hingaia 3 Auckland 2113 7 NR NR NR NR NR 47 Harbourside Drive 4 HINGAIA 2113 LOT 1000 DP 528856 NR NR NR NR NR

Water take consents Consent WAT80317556 and WAT80318288 (surrendered) Issued date: 22/01/1997 Hazardous Activity Two consents for water and Industries list take for irrigation of site landscape areas & 10 Hinau Road Hingaia Condition: fill/refill/top up of 5 Auckland 2580 PT ALLOT 600 DP 386486 NR NR NR Contamination ornamental lake Summary of Auckland Council results of the Contaminated Sites Search (Part 2) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Bore consents and water take consents Discharge consent (type from additional identified for individual Legacy permitted Property notes information provided Address Lot Legacy Consents All records) activity from SAP by Auckland Council

Consent number 15358 River/Stream Diversion (surrendered) Granted date: 22/01/1997, expiry date: 31/12/2031 Consent holder: Horizon 2000 Ltd TO DIVERT THE SOUTHERN WATERCOURSE VIA AN OPEN CHANNEL INTO THE NORTHERN WATERCOURSE AND TO UNDERTAKE CHANNEL WORKS IN THE NORTHERN WATERCOURSE TO INCREASE ITS CAPACITY ASSOCIATED Consent number 15356 Earthwork (surrendered) Granted date: 22/01/1997, expiry date: 30/05/1999 Consent holder: Horizon 2000 Ltd Water take consent TO UNDERTAKE APPROXIMATELY 20 HECTARES OF CUT AND FILL EARTHWORKS Consent number 15401 Consent number 47023 Earthwork (issued) (surrendered) Granted date: 31/01/2017, expiry date: 31/01/2020 Consent holder: Parklands Properties Limited Granted date: Earthworks associated with land modification works across the site for future residential development. 22/01/1997, expiry Consent number 41759 Stream Work (surrendered) date: 31/05/2010 Granted date: 25/06/2013, expiry date: 20/04/2048 Consent holder: Veolia Water New Zealand Limited Consent holder: To undertake streamworks to install the pipe through the bed of a stream. Horizon 2000 Ltd Streamworks associated with the installation of a gravity trunk sewer conveying wastewater. TO TAKE Consent number 15359 Take (surrendered) GROUNDWATER FOR Granted date: 22/01/1997, expiry date: 31/05/2010 Consent holder: Horizon 2000 Ltd IRRIGATION OF TO TAKE SURFACE WATER FROM AN UNNAMED TRIBUTARY OF THE DRURY CREEK FOR IRRIGATION LANDSCAPE AREA OF LANDSCAPE AREAS AND FILL/REFILL/TOP UP OF ORNAMENTAL LAKE AND FILL/REFILL/TOP LOW FLOW CONCRETE CHANNEL CONSTRUCTED IN BED OF STREAM WITH ADJUSTABLE SIDE WEIR UP OF OF STOP LOGS. ORNAMENATAL LAKE Irrigation of landscape areas & fill/refill/top up of ornamental lake ASSOCATED WITH A Consent number 15401 Take (surrendered) TOURIST THEME Granted date: 22/01/1997, expiry date: 31/05/2010 Consent holder: Horizon 2000 Ltd PARK VISITOR TO TAKE GROUNDWATER FOR IRRIGATION OF LANDSCAPE AREA AND FILL/REFILL/TOP UP OF ATTRACTION/INFORM ORNAMENATAL LAKE ATION FACILITY A 100 MM DIAMETER BORE LOCATED APPROXIMATELY 900 METRES SOUTH OF HINGAIA ROAD, COMPRISING A KARAKA SCALE MODEL OF Irrigation of landscape area & fill/refill/top up of ornamental lake NEW ZEALAND, Consent number 5481 Stormwater Discharge (expired) ARTIFICIAL LAKE, 72 Hinau Road Hingaia Granted date: 14/12/1987, expiry date: 31/12/2005 Consent holder: Papakura District Council RECEPTION 6 Auckland 2113 Lot 601 DP 386486 A 1200 mm diameter pipe outfall. NR NR NR /RESTAURANT BUIL 115 Park Estate Road 7 Hingaia Auckland 2113 ALLOT 30 Parish OF OPAHEKE NR NR NR NR NR

Consent number 2247 Stormwater Discharge (Cancelled) 144 Park Estate Road Consent granted: 26/06/1978, expiry date: 06/06/1988 8 Hingaia Auckland 2113 ALLOT 434 Parish OF OPAHEKE Consent holder: JUSTICE DEPARTMENT - OTAHUHU NR NR NR NR 27 Bremner Road Drury 9 Auckland 2578 SEC 1 SO 395394 NR NR NR NR NR 33 Bremner Road Drury 10 Auckland 2578 ALLOT 383 Parish OF OPAHEKE NR NR NR NR NR 31 Bremner Road Drury Lot 4 DP 106093, ALLOT 400 Parish 11 Auckland 2578 OF OPAHEKE NR NR NR NR NR 18 Victoria Street Drury Pt Lot 4 SEC 4 Parish OF OPAHEKE, 12 Auckland 2113 Pt Lot 5 SEC 4 Parish OF OPAHEKE NR NR NR NR NR Summary of Auckland Council results of the Contaminated Sites Search (Part 2) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Bore consents and water take consents Discharge consent (type from additional identified for individual Legacy permitted Property notes information provided Address Lot Legacy Consents All records) activity from SAP by Auckland Council

Consent 5166 Stormwater Discharge (surrendered) Granted date: 16/09/1986, expiry date: 31/12/2027 Consent holder: Auckland Council Drury Recreation Complex To divert & discharge stormwater from part of a sports complex of eight hectares to an estuary of the Ngakoroa Stream. A 225MM diameter outfall. Consent 5168 Stormwater Discharge (surrendered) Granted date: 01/08/1986, expiry date: 31/12/2027 Consent holder: Auckland Council Drury Recreation Complex File ref KR938959 To divert & discharge stormwater from part of a sports~complex of eight hectares to an estuary of the STOCK GRAZING 20 Victoria Street DRURY ALLOT 390 Parish OPAHEKE, PT Ngakoroa Stream. Small Low Risk 13 2113 ALLOT 47 Parish OPAHEKE A 300mm diameter outfall. NR Dam NR NR 24 Mercer Street DRURY 14 2578 SECT 1 SO 510641 NR NR NR NR NR

Discharge from contaminated site Consent number 41047 (surrendered) Granted date: 12/12/2012, expiry date: 31/12/2017 Consent holder: Barry Phillips Holdings Limited To undertake earthworks, Consent number 41047 Contaminated Site Discharge (surrendered) disturb contaminated land, Granted date: 12/12/2012, expiry date: 31/12/2017 and discharge contaminants Consent holder: Barry Phillips Holdings Limited from land containing elevated To undertake earthworks, disturb contaminated land, and discharge contaminants from land containing levels of contaminants. 30 Mercer Street Drury elevated levels of contaminants. Remediation of contaminated Remediated to 15 Auckland 2578 Lot 1 DP 92474, SEC 1 SO 69741 Remediation of contaminated soils on site. soils on site. NR background NR Summary of Auckland Council results of the Contaminated Sites Search (Part 2) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Bore consents and water take consents Discharge consent (type from additional identified for individual Legacy permitted Property notes information provided Address Lot Legacy Consents All records) activity from SAP by Auckland Council

Consent number 33703 Bore (expired) Granted date: 24/01/2007, expiry date: 28/01/2008 Consent holder: Carlo Stubeli To authorise the construction of a bore for domestic supply. Construction of a 100mm diameter bore to an approximate depth of 80m. Installation of PVC casing material to an approximate depth of 60m. Consent number 23977 Bore (expired) (Just outside property boundary but noted as 60 Mercer street) Granted date: 28/04/2000, expiry date: 28/04/2001 Consent holder: Felix Stubeli Authorise the construction of a bore for the extraction of groundwater for stock and domestic supply. 60 Mercer Street Drury Construction of a 100mm diameter bore to a depth of approximately 80m. Installation of appropriate casing to 16 Auckland 2578 Lot 2 DP 92474, SEC 1 SO 66956 a minimum depth of 40m and screens as required. NR NR NR NR

PT ALLOT 38 Parish OF OPAHEKE, 68 Pitt Road Drury Auckland Lot 1 DP 502044, ALLOT 402 Parish 17 2578 OF OPAHEKE NR NR NR NR NR

Southbound 13 Bexley Place Papakura 19 Auckland 2113 Lot 36 DP 61513 NR NR NR NR NR 118 Beach Road Papakura 20 Auckland 2113 PT ALLOT 3 DP 14721 NR NR NR NR NR 15 Dumas Place Papakura 21 Auckland 2110 Lot 8 DP 488727 NR NR NR NR NR

Consent number 37419 Stormwater Discharge (Issued) Granted date: 08/01/2010, expiry date: 31/01/2030 Consent holder: Visy Recycling NZ Limited To authorise the diversion and discharge of stormwater from approximately 36,553 square metres of impermeable surfaces from the operation of a materials recovery facility industrial process on the site. 19 Dumas Place Papakura Diversion and Discharge of Stormwater. This is considered unlikely to be associated with this lot, rather 29 22 Auckland 2110 Lot 15 DP 488727 Victoria Stree and 12 Alfred. NR NR NR NR 17 Dumas Place Papakura 23 Auckland 2110 Lot 7 DP 488727 NR NR NR NR NR 63R Chichester Drive 24 Papakura Auckland 2113 Lot 31 DP 77147, Lot 32 DP 77147 NR NR NR NR NR 119 Chichester Drive 25 Papakura Auckland 2113 Lot 208 DP 60457 NR NR NR NR NR 2/57 Park Estate Road 26 Papakura Auckland 2113 Prin Unit B DP 78264, AU 2 DP 78264 1/57 Park Estate Road 27 Papakura Auckland 2113 Prin Unit A DP 78264, AU 1 DP 78264 NR NR NR NR NR 57 Park Estate Road 28 Papakura Auckland Lot 1 DP 77469 Summary of Auckland Council results of the Contaminated Sites Search (Part 2) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Bore consents and water take consents Discharge consent (type from additional identified for individual Legacy permitted Property notes information provided Address Lot Legacy Consents All records) activity from SAP by Auckland Council

File reference 20668 Stormwater Discharge (proposed) Permitted activity holder: Park Estate Venture Limited To discharge stormwater associated with the development of a 18/46 Park Estate Road Lot 18 DP 496450, 1/23 SH Lot 24 DP residential 29 Papakura Auckland 2113 496450 NR NR subdivision. NR NR 38V Park Estate Road Pt Lot 7 DP 4963, PT ALLOT 311 30 Papakura Auckland Parish OF OPAHEKE NR NR NR NR NR 45 Parkhaven Drive LOT 5 DP 211045 - HAVE A 1/9 SH IN 31 Papakura Auckland 2113 LOT 9 DP 211045 NR NR NR NR NR

Consent number 33308 Earthwork (expired) Granted date: 09/09/2007, expiry date: 30/04/2010 Consent holder: Hugh Green Contractors Limited To authorise approximately 10.3ha of earthworks associated with the development of a residential subdivision in accordance with Section 9 of the Resource Management Act 1991. 50,000 cubic metres of earthworks associated with the development of a residential subdivision. Consent number 20443 Stormwater Discharge (superseded) Granted date: 01/01/1998, expiry date: 31/12/2032 Consent holder: BP Oil New Zealand Limited Attn: Asset Administrator BP Oil Papakura Motorway Svce Stn Hazardous Activity Under section 14 of the RMA to divert surface water through a piped culvert, and under section 15 of the RMA and Industries list to divert and discharge stormwater from a proposed 5 ha Motorway Service Area comprising car parking, off site 53 Parkhaven Drive LOT 10 DP 211045 - HAVE A 1/9 SH and on ramps, a service station, truck Condition: 32 Papakura Auckland 2113 IN LOT 9 DP 21104 stormwater pipe network, 3 API oil separators, sand filter treatment device NR NR Contamination NR 105 Parkhaven Drive 33 Papakura Auckland 2110 Lot 102 DP 473202 NR NR NR NR NR 589R Great South Road 34 Papakura Auckland 2113 Lot 1 DP 433619 NR NR NR NR NR 597 Great South Road 35 Papakura Auckland 2113 Lot 4 DP 198957 NR NR NR NR NR 599 Great South Road 36 Papakura Auckland 2113 Lot 5 DP 198957 NR NR NR NR NR Southbound slippery creek to 37 railway tracks Summary of Auckland Council results of the Contaminated Sites Search (Part 2) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Bore consents and water take consents Discharge consent (type from additional identified for individual Legacy permitted Property notes information provided Address Lot Legacy Consents All records) activity from SAP by Auckland Council 137 Great South Road Drury 38 Auckland 2579 1/2 SH Lot 1 DP 120070 135 Great South Road Drury 1/2 SH Lot 1 DP 120070, Factory 1 DP 39 Auckland 2579 120070

Consent number 8753 Coastal Structure (expired) (Previously pipeline 224 ) Granted date: 23/09/1988, expiry date: 30/09/1996 Consent holder: Franklin District Council Consent number 27445 Stream Work (issued) Granted date: 22/09/2003, expiry date: 31/12/2037 Consent holder: Auckland Council To authorise works within a watercourse and the associated diversion of surface water related to the installation of a pedestrian footbridge over the Hingaia Stream, Drury, in accordance with Sections 13 and 14 of the Resource Management Act 1991. Consent number 9733 Stream Work (surrendered) Granted date: 09/04/1992, expiry date: 31/12/2026 Consent holder: Auckland Council 135-137 Great South Road TO ALLOW VARIOUS WORKS IN THE HINGAIA STREAM TO IMPROVE THE EFFICIENCY OF FLOW AND 40 Drury Auckland Lot 1 DP 120070 REDUCE THE INCIDENCE OF FLOODING NR NR NR NR 2R Creek Street Drury ALLOT 72 SEC 6 Village OF DRURY, 41 Auckland 2113 ALLOT 73 SEC 6 Village OF DRURY NR NR NR NR NR

Hazardous Activity and Industries list site 5 Creek Street Drury Condition: 42 Auckland 2113 Pt Lot 3 DP 111728 NR NR NR Contamination NR

Consent number 5761 Take (Cancelled) Granted date: 28/05/1987, expiry date: 31/12/1992 Consent holder: Firth Industries Ltd TO TAKE GROUNDWATER FOR USE IN STONE CUTTING INDUSTRY~~~~ 70 Firth Street Drury A 100MM DIAMETER BORE APPROXIMATELY 100 METRES WEST OF~FIRTH STREET DRURY~~~ 43 Auckland 2113 Lot 1 DP 111727 To discharge water into hingaia stream NR NR NR NR 19 Creek Street Drury Lot 1 DP 126843, PT LOT 2 DP 44 Auckland 2113 111729 NR NR NR NR NR

ALLOT 340 Parish OF OPA+D49:D90HEKE, Lot 2 DP 23, 31, 33 Creek Street 116293, Lot 1 DP 116293, Lot 2 DP 45 DRURY 2113 163340 NR NR NR NR NR 33-35 Creek Street Drury 46 Auckland 2113 Lot 1 DP 163340 NR NR NR NR NR Summary of Auckland Council results of the Contaminated Sites Search (Part 2) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Bore consents and water take consents Discharge consent (type from additional identified for individual Legacy permitted Property notes information provided Address Lot Legacy Consents All records) activity from SAP by Auckland Council

Discharge to air Consent number 46219 (issued) Granted date:10/08/2016, expiry date: 10/08/2026 Consent holder: Counties Ready Mix Limited To discharge contaminants into air from the manufacture of concrete. Discharge contaminants to air from the mixing of cement powder with other materials for the manufacture of concrete. Dischrage from industrial trade Consent number 46209 (issued) Lot 7 SEC 3 Deeds Reg 35, Lot 8 SEC Consent number 46686 Stormwater Discharge (issued) Granted date: 10/08/2016, 3 Deeds Reg 35, Lot 9 SEC 3 Deeds Granted date: 10/08/2016, expiry date: 10/08/2051 expiry date: 10/08/2051 Reg 35, Lot 10 SEC 3 Deeds Reg 35, Consent holder: Counties Ready Mix Limited Consent holder: Counties Lot 11 SEC 3 Deeds Reg 35, Lot 12 To divert and discharge stormwater and attenuation of stormwater from approximately 6,000m2 of impervious Ready Mix Limited Hazardous Activity SEC 3 Deeds Reg 35, Lot 14 SEC 3 area associated with concrete manufacturing activities. To authorise the discharge of and Industries list Deeds Reg 35, Lot 13 SEC 3 Deeds Discharge SW from an impervious area of approximately 8,230m2 or imperv area associated with concrete contaminants into or onto site 51 Creek Street Drury Reg 35, Lot 15 SEC 3 Deeds Reg 35, manufacturing activities land or water from concrete Condition: 47 Auckland 2113 Lot 16 SEC 3 D Approximately 3,500m2 of earthworks associated with the extension of a ready mix concrete facility (2017) manufacturing activities. NR Contamination NR 69 Creek Street Drury 48 Auckland 2113 Lot 1 DP 201670 NR NR NR NR NR 81 Creek Street Drury 49 Auckland 2113 Lot 2 DP 201670 NR NR NR NR NR Hazardous Activity and Industries list site 87 Creek Street Drury Condition: 50 Auckland 2113 Lot 3 DP 201670 NR NR NR Contamination NR LOT 11 SECT 5 PARO Opaheke, Lot 1 38 Norrie Road Drury DP 41305, Lot 3 DP 41305, ALLOT 49 51 Auckland 2113 SUBURBAN SEC 5 Parish OPAHEKE, NR NR NR NR NR

Hazardous Activity and Industries list site 10 Firth Street Drury Condition: 52 Auckland 2113 Lot 2 DP 130158 NR NR NR Contamination NR Summary of Auckland Council results of the Contaminated Sites Search (Part 2) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Bore consents and water take consents Discharge consent (type from additional identified for individual Legacy permitted Property notes information provided Address Lot Legacy Consents All records) activity from SAP by Auckland Council

Consent number 11555 Discharge Other (superseded) Granted date: 03/05/1995, expiry date: 31/12/1999 Consent holder: Bert Teubel Limited TO DISCHARGE UP TO 15 CUBIC METRES PER DAY OF ACID-BATH RINSE-WATER INTO THE HINGAIA STREAM 20 Firth Street Drury EXISTING - RINSE TANK, DISCHARGE PIPE 53 Auckland 2113 Lot 1 DP 130158 PROPOSED - DIFFUSED OUTLET STRUCTURE NR NR NR NR 301 Great South Road Drury 54 Auckland 2579 ALLOT 339 Parish OF OPAHEKE NR NR NR NR NR 305 Great South Road Drury 55 Auckland 2579 Lot 1 DP 138213 NR NR NR NR NR 10R Karaka Road Drury SO 65144, SEC 1 SO 65144, PT 56 Auckland 2578 RAILWAY LAND SO 47014 NR NR NR NR NR

Consent number 25010 Stream Work (issued) Granted date: 26/03/2001, expiry date: 31/03/2036 Consent holder: Waikato Water Joint Venture To authorise the installation and occupation of two piles to support a water pipeline in accordance with Sections 13 of the Resource Management Act 1991. 168 Flanagan Road Drury PT ALLOT 38 Parish OF OPAHEKE, To construct a pipeline from Tuakau to Redoubt Rd. Aerial crossing over the Hingaia Stream at Flanagan Rd 57 Auckland 2113 PT ALLOT 258 Parish OF OPAHEKE Drury NR NR NR NR 180 Flanagan Road Drury 58 Auckland 2113 PT ALLOT 1 DP 47861 NR NR NR NR NR

Consent number: 46833 Stormwater Discharge (issued) Granted date: 29/08/2016, expiry date: 31/08/2051 Consent holder: BFG engineering Ltd The diversion and discharge of stormwater to ground soakage from more than 1000 M2 of impervious area. 190 Flanagan Road Drury To divert and discharge stormwater from 2090m² of total impervious area associated with residential 59 Auckland 2113 ALLOT 422 Parish OF OPAHEKE alterations and driveway and manoeuvring area NR NR NR NR North Auckland Line, Auckland Region Railway Network NR NR NR NR NR North Auckland Line, Auckland Region Railway Network NR NR NR NR NR Summary of Auckland Council results of the Contaminated Sites Search (Part 2) 506207-0310-REP-KF-0035 26/11/2019 Preliminary Site Investigation

Bore consents and water take consents Discharge consent (type from additional identified for individual Legacy permitted Property notes information provided Address Lot Legacy Consents All records) activity from SAP by Auckland Council

Papakura interchange: Consent number: 38832 Earthwork (expired) Granted date: 10/03/2011, expiry date: 30/04/2015 Consent holder: NZ Transport Agency Attention: Tammy Muharemi To undertake approximately 6.0ha of earthworks associated with the motorway interchange works located at Bore consent Papakura Interchange on State Highway 1. Consent reference: Consent number: 35600 Bore (expired) Granted date: 20/03/2008, expiry date: 24/03/2009 Consent holder: LUC60272064 Maunsell Limited Issued date: To authorise the construction of five bores with a casing diameter of 100 mm and a bore depth of 25m for 02/02/2010 geotechnical investigation and groundwater level monitoring using 2 piezometers and a hydrological pump test. To construct a bore for Eastern side of corridor, near 49 Chichester Street geotechnical Consent number: 1512 Stormwater Discharge (expired) Granted date: 13/05/1975, expiry date: 12/05/2010 investigation Consent holder: Papakura District Council Bore record Discharge stormwater only from 11 acre residential subdivision plus a 25 acre completely developed school site Consent number: Western side of corridor, near 72 Hinu Road 35600 (expired) Consent number: 5481 Stormwater Discharge (expired) Granted date: 14/12/1987, expiry date: 31/12/2005 Granted date: Consent holder: Papakura District Council 20/03/2008, expiry A 1200 mm diameter pipe outfall. date: 24/03/2009 Eastern side of corridor, near 13 Joanne Place Consent holder: Consent number: 1182 Stormwater Discharge (cancelled) Granted date: 13/12/1974, expiry date: 04/12/1984 Maunsell Limited Consent holder: K Williams Family Trust To authorise the ENCLOSE OPEN WATERCOURSE TO ENABLE LAND TO BE~DEVELOPED FOR SUBDIVISION AND TO Papakura construction of five ACCEPT RUNOFF FROM~ROADS~~ EXISTING DRAIN EXTENDED BY 24" PIPELINE TO TERMINATE~AT interchange: bores with a casing PROPERTY BOUNDARY ADJACENT TO MOTORWAY~~~ File reference: diameter of 100 mm Western side of corridor, southern side of Bremner road C512-12-4575 and a bore depth of Consent number 46584 Reclamation (issued) Granted date: 26/09/2016, expiry date: 26/09/2021 Consent holder: (proposed) 25m for geotechnical Karaka & Drury Consultant Limited To construct a bore investigation and To widen existing Bremner road bridge involving reclamation. for geotechnical groundwater level Western side of corridor, north of Drury interchange investigation. monitoring using 2 Consent number 34121 Stormwater Discharge (issued) Granted date: 02/07/2007, expiry date: 31/12/2041 To construct a piezometers and a Consent holder: NZ Transport Agency Attention: Tammy Muharemi 100mm diameter hydrological pump test. Southern Motorway To authorise the diversion and discharge of stormwater Grass Swale with Manhole riser with staged outlets and bore to a depth of (same location as Papakura - Drury Road corridor scruffy dome. Where: Access at Hilldene Road Wet Pond with Two Inlets. Where: Access at Hilldene Road. NR approximately 25m. NR already identified)

NOTES 1 No information pertaining to properties assessed in this PSI was identified in data provided by the Auckland Council GIS team under the categories "Contaminated sub types", "Possible contam records", "Property condition", "SIIED pollution"

2 "NR" indicates no records were found for the property From: Lorraine Hamilton To: Rebecca Colvin Cc: closedlandfills Subject: RE: Landfill data for Papakura to Bombay Date: Friday, 8 November 2019 1:52:20 PM Attachments: image002.png

Hi Rebecca,

Closed landfill locations below. Ray Small Park is the closest on CLFM’s closed landfill list, at just over 500m away.

This search is based on closed landfills owned or managed by the closed landfill management team only, and other landfills, including private fills or fills owned and/or managed by other council controlled organisations.

Let me know if you need anything else.

Kind regards,

Lorraine Hamilton | Closed Landfill Management Specialist Engineering & Technical Services Unit Infrastructure & Environmental Services Department

Mobile 021 838 943

Auckland Council, Level 2 North, Bledisloe House, 24 Wellesley St, Auckland Central, Auckland 1010 Visit our website: www.aucklandcouncil.govt.nz

From: Rebecca Colvin [mailto:[email protected]] Sent: Thursday, 7 November 2019 5:50 p.m. To: Lorraine Hamilton Subject: FW: Landfill data for Papakura to Bombay

Hi Lorraine

I would like to find information on any known landfills within 250m of the state highway between Papakura and Bombay. See below. If I could get the layers as well as output that would be great.

Thanks,

Rebecca Colvin Senior Contaminated Land Specialist, Aurecon M +64 2 75826615 [email protected]

have on the recipient computer system or network. Any views expressed in this email may be those of the individual sender and may not necessarily reflect the views of Council. From: Rachel Terlinden To: Rebecca Colvin Subject: RE: Site Contamination information request - papakura to bombay Date: Wednesday, 20 November 2019 9:39:58 AM Attachments: image001.png image002.png image004.png image005.png image006.png image007.png image008.png image009.png image010.png

Hi Rebecca,

You are correct, the HAILS activity belongs on 20 Firth Street. I believe 10 Firth has been tagged as Horticentre lists their street address as 10 Firth Street, when it is actually 20 Firth in our database. I can’t find any record of HAIL activities occuring at 10 Firth Street seperately from Horticentre which now belongs at 20.

Additionally my apologies for missing your call yesterday, I didn’t have my phone on me.

Ngā mihi, Rachel

Rachel Terlinden | Technical Officer – Contamination, Air & Noise Specialist Input | Resource Consents Mob 021956763 Auckland Council, Level 2, 35 Graham Street, Auckland Visit our website: www.aucklandcouncil.govt.nz

From: Rebecca Colvin Sent: Tuesday, 19 November 2019 3:03 PM To: RECContamination Cc: Rachel Terlinden Subject: RE: Site Contamination information request - papakura to bombay

Thanks so much Rachel. I appreciate the speedy response!

I have one question.

Our records indicate the site 10 Firth Street, Drury, has been a supplier to the horticultural industry. The site has been used for storing and distributing a range of grower requisites including fertilisers and industrial chemicals.

10 Firth Street is occupied and owned by Keith Hay Homes, however 20 Firth Street is occupied by Horticentre Ltd. Do you mean 20 Firth St in terms of storing and distributing pesticides and chemicals?

Rebecca Colvin Senior Contaminated Land Specialist, Aurecon M +64 2 75826615 [email protected]

DISCLAIMER From: Rachel Terlinden On Behalf Of RECContamination Sent: Tuesday, 19 November 2019 2:13 PM To: Rebecca Colvin Subject: RE: Site Contamination information request - papakura to bombay

Hi Rebecca,

This email is in response to your recent enquiry requesting available site contamination information that was held within the Environmental Health Unit of the Licensing and Compliance Services Department (LCS).

Council’s regulatory records indicate that there could be the potential for historic, and/or current, land use activities on or adjacent to this site that falls within the Hazardous Activities and Industries List (HAIL) published by the Ministry for the Environment.

Our records indicate the site 10 Hinau Road, Hingaia,has been subject to an underground petrol storage tank. Fill points and vents may have leaked potentially resulting in contamination of the ground and ground water with petroleum products.

Our records indicate the site 30 Mercer Street, Drury, has been subject to spillage of waste fuels and oils due to use as a motor vehicle garage and contamination was confirmed to be above relevant discharge criteria. This has since been remediated by the owner. However, Council’s GIS aerial records indicate continued use for motor vehicle activities.

Our records indicate the site 53 Parkhaven Drive, Papakura, is operating as a vehicle refuelling station.

Our records indicate the site 5 Creek Street, Drury, is subject to the storage and/or dispensing of dangerous goods. Council’s GIS aerial records additionally indicate stockpiling of metal materials outside on site.

Our records indicate the site 87 Creek Street, Drury has been subject to the storage and/or dispensing of dangerous goods. Records additionally indicate the site may be utilised for scrapyard activities at present.

Our records indicate the site 51 Creek Street, Drury, is presently used as Ready Mix Concrete Products Ltd. This has been operating as a concrete batching plant since December 1999.

Our records indicate the site 10 Firth Street, Drury, has been a supplier to the horticultural industry. The site has been used for storing and distributing a range of grower requisites including fertilisers and industrial chemicals.

Please note that only council's soil contamination records within the LCS department and GIS map have been checked. There may be other soil contamination information held within:

1. A Contaminated Sites Enquiry report, which contains the following information only: (A search area of radius 200m is applied by default) · Pollution Incidents (incl. air discharges, oil or diesel spills) · Bores · Contaminated site, air discharge and industrial trade process consents · Closed Landfills (council- owned closed landfill sites only) · Air quality permitted activities How to apply for a Contaminated Sites Enquiry Response: DO NOT apply for this as part of a Property File request. Please follow this link --> https://www.aucklandcouncil.govt.nz/building-and-consents/types-resource-consents/earthworks/Pages/order-site-contamination-enquiry- report.aspx Please take note of the following when applying: · Apply under the Company Name if request is on behalf of the company. · Legal Description(s) of the physical site(s) is/are stated clearly. This is to ensure accurate representation of data. · Enter preferred Postal Address or PO Box instead of physical address of company. · Contact Person: Please enter your full name, including e-mail address.

2. Property File for viewing reports or all relevant information relating to the property -Requested from the local service centre, by phone, 09 3010101.

Please note:

If you are demolishing any building that may have asbestos containing materials (ACM) in it:

1. You have obligations under the relevant regulations for the management and removal of asbestos, including the need to engage a Competent Asbestos Surveyor to confirm the presence or absence of any ACM.

2. Work may have to be carried out under the control of the person holding a WorkSafe NZ Certificate of Competence (CoC) for restricted works.

3. If any ACM is found, removal or demolition will have to meet the requirements of the Health and Safety at Work (Asbestos) Regulations 2016.

4. Information on asbestos containing materials and your obligations can be found at www.worksafe.govt.nz. If ACM is found on site following the demolition or removal of the existing buildings, you may be required to remediate the site and carry out validation sampling. Dependent on the amount of soil disturbance a further consent application may be required.

Paints used on external parts of properties up until the mid-1970’s routinely contained lead, a poison and a persistent environmental pollutant. Older paints dating from before 1945 often contained extremely high levels of lead. Dust and flakes from painted surfaces in poor condition are a major cause of lead poisoning in both adults and children. You are advised to ensure that soils affected by old, peeling or flaking paint are assessed in relation to the proposed use of the property. Very sensitive uses such as residential with young children, childcare centres, play areas or recreational land should be considered as high risk. In services or working environments other regulatory requirements may require risk assessment and mitigation.

Ngā mihi, Rachel

Rachel Terlinden | Technical Officer – Contamination, Air & Noise Specialist Input | Resource Consents Mob 021956763 Auckland Council, Level 2, 35 Graham Street, Auckland Visit our website: www.aucklandcouncil.govt.nz

From: Rebecca Colvin Sent: Thursday, 14 November 2019 11:12 AM To: RECContamination Cc: Rachel Terlinden ; GISDATA Subject: RE: Site Contamination information request - papakura to bombay

Hi there

On review of the data you have provided in the PropertyNotesFromSAP tab, HAIL activities have been identified in the following properties. Could you please send through any relevant documentation / reports you have in regard to these.

10 Hinau Road, Drury – HAIL site 30 Mercer Street, Drury – 53 Parkhaven Drive – HAIL site 5 Creek Street – HAIL site 87 Creek Street – HAIL site 51 Creek Street – HAIL site 10 Firth Street – HAIL site

Thanks, Rebecca

Rebecca Colvin Senior Contaminated Land Specialist, Aurecon M +64 2 75826615 [email protected]

DISCLAIMER From: Rachel Terlinden On Behalf Of RECContamination Sent: Wednesday, 6 November 2019 3:46 PM To: Rebecca Colvin Subject: RE: Site Contamination information request - papakura to bombay

Hi Rebecca,

We can see you have already requested and received the data from the GIS team, which would be the same information you would receive from us for this query.

Please let us know if you require any further information on this.

Ngā mihi, Rachel

Rachel Terlinden | Technical Officer – Contamination, Air & Noise Specialist Input | Resource Consents Mob 021956763 Auckland Council, Level 2, 35 Graham Street, Auckland Visit our website: www.aucklandcouncil.govt.nz

From: Rebecca Colvin Sent: Tuesday, 5 November 2019 1:02 PM To: Claire Lacina ; RECContamination Subject: Site Contamination information request - papakura to bombay

Hi Claire

Would you be able to do a contamination assessment (HAIL) search for me? I am looking at the state highway between Papakura interchange and Drury interchange. See the location below.

I have also identified adjacent properties of potential interest. If you could look at these properties too please.

If any results could please be presented on both excel and a map format, that would be great.

Rebecca Colvin Senior Contaminated Land Specialist, Aurecon M +64 2 75826615 [email protected] Level 4, 139 Carlton Gore Road, Newmarket, Auckland New Zealand 1023 PO Box 9762, Newmarket, Auckland 1149 aurecongroup.com

DISCLAIMER

CAUTION: This email message and any attachments contain information that may be confidential and may be LEGALLY PRIVILEGED. If you are not the intended recipient, any use, disclosure or copying of this message or attachments is strictly prohibited. If you have received this email message in error please notify us immediately and erase all copies of the message and attachments. We do not accept responsibility for any viruses or similar carried with our email, or any effects our email may have on the recipient computer system or network. Any views expressed in this email may be those of the individual sender and may not necessarily reflect the views of Council.

Attachment 4 Property File Summary

WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION A | PAGE 59

Property File Summary Papakura to Bombay Preliminary Site Investigation Stage 1 506207-0310-REP-KF-0035, 9/12/2019

Address Parcel ID Pertinent Documents / Information Source Lot 3 DP This building was relocated to the site and is being upgraded and refurbished. It is intended to be used as part of the Graham Parfitt & Associates, 2013, Assessment of effects on the environment report, 113 Harbourside 113 Harbourside Dr 369556 Karaka Learning Centre providing a seventh learning centre plus a hall. Drive, Karaka Council's property file indicates that the site has been used as a private pre-school facility since 1986, with multiple resource consent applications lodged since then to increase the scale of the activity. Initial soil investigations identified the soils consisted of 120mm topsoil overlying silty clays classified as category 5 soils with moderate to slow drainage characteristics. The soils on the property are reportedly compromised by historic heavy vehicle movements and road metal from intensive use of the land by heavy machinery used by the US Marines Lot 3 DP during the 1940's World War II period. 113 Harbourside Dr 369556 2015, Auckland Council Resource Consent - Regional Report (Ref: R/REG/2015/1508) 5 Harbourside Drive LOT 1 DP Karaka Centre Limited wished to develop a groundwater supply for residential and commercial use. The AAE Karaka Centre Limited Groundwater Take Application Harbourside Drive Assessment of Environmental Hingia 528856 concluded that effects on the groundwater source would be negligible Effects. Prepared for Karaka Centre Limited by Earthtech Consulting Limited 2017 A geotechincal report was prepared as part of the due diligence for a proposed service station. A summary of aerial photography included in the report indicated that the site was used for farming and crops before Harbourside Drive 5 Harbourside Drive LOT 1 DP was formed in 2006, with no later land modification noted. The report noted that the proposed development included Lander Geotechnical, 2016, Geotechnical Investigation for Proposed Z Service Station at corner of Hingaia Hingia 528856 3 x 50,000 L underground tanks.FIll was not encountered. Road and Harbourside Drive, Karaka. Prepared for Karaka Centre

An environmental investigation was carried out, in which soil samples had contaminant concentrations less than the 5 Harbourside Drive LOT 1 DP Soil Contaminant Standards for commercial/industrial land use. Groundwater samples had contaminant concetrations Focus Environmental Services 2016, Site Investigation Reprot 47 Harbourside Drive Hingaia Auckland. Hingia 528856 less than the ANZECC trigger value for protection of 80 and 95% of marine and freshwater species. Prepared for Karaka Centre Limited. Z Energy proposed to establish a new high flow diesel pump with a single dispenser at the Z Karaka Service Station 5 Harbourside Drive LOT 1 DP which was established in 2018. The AEE concluded that the proposed development would have less than minor 4Sight Consulting for Z Energy Limited 2019, Establishment anad operation of a high flow diesel pump and Hingia 528856 effects on the wider environment. dispenser Assessment of Environmental Effects. An AEE was prepared to support consent application for subdivision, with the intent being to sudivide the property and 5 Harbourside Drive LOT 1 DP create a balance lot which would remain production land. The site surroundings section notes that the site has a Application for Subdivision Consent at 47 Harbourside Drive, Hingaia. Prepared for Karaka Centre Limited Hingia 528856 mixture of horticultural activities, and surrounding land use includes a horse sale yard. by Civil Plan Consultants 2018 5 Harbourside Drive LOT 1 DP Decision on an application for resource consent under the Resource Management Act 1991: LUC60335779. Hingia 528856 Consent was granted for Earthworks, Stormwater Management, Signage and Building within the Mixed-Use zone. Auckland Council 2019 5 Harbourside Drive LOT 1 DP Decision on an application for resource consent under the Resource Management Act 1991: LUC60334096. Hingia 528856 Consent was granted to install a new high flow diesel pump with a single dispenser Auckland Council 2018 5 Harbourside Drive LOT 1 DP Decision on an application for resource consent under the Resource Management Act 1991: Hingia 528856 Consent was granted to establish and operate a Z service station with two retail units. R/LUC/2017/996, LUC60115073. Auckland Council 2017

Vector Gas Limited has a high pressure natural gas pipeline crosses Hingaia Road (200mm steel), which supplies natural gas to Auckland. Remediation of pipeline was required post road widening in 2012. Application required the construction of a new section of Gas pipeline beneath the road crossing. The new pipeline will be tied into the existing 15 Hingaia Rd pipeline at Vector Gas substation off Hildene Road. The original pipeline was established in 1967. 2013, Vector Gas Resource Consent Application -15 Hingaia Road –, Vector. 47 Harbourside Drive Hingia - Note that this site was subdivided from 5 Harbourside Drive and therefore many of the LOT 1000 Karaka Centre Limited Groundwater Take Application Harbourside Drive Assessment of Environmental property files are shared DP 528856 Summarised for 5 Harbourside Effects. Prepared for Karaka Centre Limited by Earthtech Consulting Limited 2017 47 Harbourside Drive Hingia - Note that this site was subdivided from 5 Harbourside Drive and A geotechincal report was prepared in support of consent application for development of 47 Harbourside Drive with therefore many of the LOT 1000 three new comercial lots and one balance lot with associated roading/accessway and civil infrastructure. Fill was Geotechnical Investigation Report Karaka Centre Stage 2 47 Harbourside Drive, Karaka. Prepared for property files are shared DP 528856 encountered to 1.1m and groundwater between 2.5 and 4.9m Karaka Centre Limited by Lander Geotechnical 2019 47 Harbourside Drive Hingia - Note that this site was subdivided from 5 Harbourside Drive and therefore many of the LOT 1000 Geotechnical Investigation for Proposed Z Service Station at corner of Hingaia Road and Harbourside Drive, property files are shared DP 528856 Summarised for 5 Harbourside Karaka. Prepared for Karaka Centre Ltd by Lander Geotechnical, 2016 47 Harbourside Drive Hingia - Note that this site was subdivided from 5 Harbourside Drive and therefore many of the LOT 1000 Site Investigation Reprot 47 Harbourside Drive Hingaia Auckland. Prepared for Karaka Centre Limited by property files are shared DP 528856 Summarised for 5 Harbourside Focus Environmental Services 2016 47 Harbourside Drive Hingia - Note that this site was subdivided from 5 Harbourside Drive and therefore many of the LOT 1000 Application for Subdivision Consent at 47 Harbourside Drive, Hingaia. Prepared for Karaka Centre Limited property files are shared DP 528856 Summarised for 5 Harbourside by Civil Plan Consultants 2018 47 Harbourside Drive Hingia - Note that this site was subdivided from 5 Harbourside Drive and therefore many of the LOT 1000 Decision on an application for resource consent under the Resource Management Act 1991: LUC60335779. property files are shared DP 528856 Summarised for 5 Harbourside Auckland Council 2019 Geotechnical investigation report in support of a proposed five storey hotel development in the north of site. Ground PT ALLOT conditions encountered comprised fill over sand and sandy silt of the Puketoka Formation. Non engineered fill was 600 DP encountered in hand augers however no detailed description is provided. Groundwater was encountered between 0.3 10 Hinau Road 386486 and 1.8m during the field investigation and at around 2m during monitoring. 2018, 10 Hinau Road, Karaka, CWM Geosciences, Ref: AKL2018-0107ABRev0 AEE in support of proposed hotel development in the north. PT ALLOT Land use relates to sale and auction of bloodstock. There are a number of buildings including stable blocks, offices, 600 DP sales centre and parking. Northern portion is grassed field. The report states that a review of the property files has 10 Hinau Road 386486 identified that the site is more likely than not, not to be a HAIL site. Application for Resource Consent and Assessment of Environmental Effects, 10 Hinau Rd, 2018 Report states that there is a proposed development of thoroughbred saleyard complex. Land is detailed to comprise flat clay and ash deposits, part of the lowlands created by river flows. Clay and topsoil has been removed for motorway construction and the ground surface has not had time to weather, leaving abnormal soil profile - slow soakage. A consultant completed five boreholes in the southwest corner which included topsoil and PT ALLOT silty clay over yellow clay. The rear of the site is reverting to gorse. Two straight channels are on site, draining runoff 600 DP from the motorway culverts. The property was a former dairy farm. Near the eastern boundary of the site are a Application to take groundwater and to discharge sewage effluent as part of proposed thoroughbreds sales 10 Hinau Road 386486 corridor for natural gas pipeline and pylons for high voltage power. yard complex (1986). PT ALLOT 600 DP Application for subdivision as southern part of the property is not being used by the sales complex. There is a sanitary 10 Hinau Road 386486 sewer pump station on site, which pumps to Karaka settlement ponds. Wrightson Bloodstock Ltd, Proposed Subdivision of Karaka Sales Complex Lot 601 DP 72 Hinau Road 386486 Approved Plan showing the proposed subdivision, including residential properties, roads and reserve. Approved Resource Consent Plan (10/08/2017) Ref: BUN600077812 Lot 601 DP 72 Hinau Road 386486 Application for bulk earthworks for a mixed housing development, for a site area of 17.23ha. Resource Consent under Housing Accords Act (Ref: R/LUC/2016/4116). Jan 2017 The site contains two water channels. One running through northern boundary of site, and southern channel bisecting the centre. The report references a PSI carried out by Groundwater and Environmental Services. A review of the site Lot 601 DP history has identified that its mostly been pasture, with a small period of cropping in the 1990s. It was summarised Woods, 2016. Application for Subdivision in the Hingaia Special Housing Area, Parklane Properties Ltd. Ref 72 Hinau Road 386486 that there is potential for low level contamination by horticultural chemicals. 61104 ALLOT 434 Parish OF Investigation undertaken to determine subsoil conditions for proposed vodafone monopole. Ground conditions found 115 Park Estate Road OPAHEKE to comprise topsoil, over silt to 3.3m. Groundwater was encountered at 0.2m Memo. Harrison Grierson Consultants Ltd, Vodafone 115 Park Estate Road Karaka ALLOT 434 Geotechnical investigation to support proposed development. Ground investigation identifieid filling in two locations, Parish OF described as dark brown silt, to a depth of 1.6m. Beneath this recent alluvium, over Puketoka formation was 144 Park Estate Road OPAHEKE encountered. Lander Geotechnical, Geotechnical Investigation Report, 2019

Potentially uncertified fill materials were identified in the central portion of 144 Park Estate Road and southern portion of 200 Park Estate Road. Investigation identified elevated concentrations of cadmium, organochloine pesticides and polycylic aromatic hydrocarbons, but not above NES SCS residential 10%. The walkover noted some demolition ALLOT 434 material and farm waste stockpiled on this site. A closed landfill site was identified in the southern portion of 152 Park Parish OF Estate Road. The report concluded that no significant contamination has been identified, however soil management Focus Environmental Services, Detailed Site Investigation and Site Management Plan Stage 2 Park Estate 144 Park Estate Road OPAHEKE will be required during development. 200 Park Estate Road is beyond the study area. Road. March 2019 The PSI was carried out on 180-200 Park Estate Road, not 144. The PSI did not identify any potentially contaminating ALLOT 434 land use or activities at 180 Park Estate Road. Historical filling and evidence of large scale burning was observed at Parish OF 200 Park Estate Road. DSI and further investigation was recommneded at 200 Park Estate Road. 200 Park Estate Focus Environmental, Preliminary Site Investigation and Site Management Plan 180-200 Park Estate Road, 144 Park Estate Road OPAHEKE Road is beyond the study area. 2017. Ground investigation was carried out out on 180-200 Park Estate Road not 144, to investigate the staining, burning ALLOT 434 and filling. The results of the investigation have indicated that the activities may have impacted the soil, elevated Parish OF concentrations of heavy metals and TPH were detected, It was recommended that remediation is undertaken to a cut Focus Environmental, Detailed Site Investigation, Assessment of Environmental Effects, 200 Park Estate 144 Park Estate Road OPAHEKE depth of 0.3m below existing ground level. Road state Road. March 2019

AECOM - As stated in a 1989 record, the Franklin District Council support that this land can only be used as SEC 1 SO recreation reserve due to its archaeological significance. There are no records to indicate that this property has been AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay 27 Bremner Road 395394 used as a landfill. Widening, Ref: 60545688 ALLOT 383 Parish OF 33 Bremner Road OPAHEKE Consent granted to build a dwelling at 33 Bremner Road Letter: District Council of Papakura to C. Dobbs 23 December 1991 ALLOT 383 Parish OF 33 Bremner Road OPAHEKE Consent granted to build a garage at 33 Bremner Road Letter: District Council of Papakura to Vogue Villas 22 October 1992 ALLOT 383 Parish OF Indicates an on-site wastewater disposal system is installed on the property. Subsoil investigation confirmed there On-site Household Wastewater Disposal. Prepared for Mr & Mrs McGuigan by Hill Desgin Engineering Ltd. 33 Bremner Road OPAHEKE was 250mm topsoil over friable alluvial silts. 1995

1 Property File Summary Papakura to Bombay Preliminary Site Investigation Stage 1 506207-0310-REP-KF-0035, 9/12/2019

Address Parcel ID Pertinent Documents / Information Source ALLOT 383 Parish OF 33 Bremner Road OPAHEKE Consent granted to extend the existing dwelling at 33 Bremner Road Letter: District Council of Papakura to G and C McGuigan 9 March 1995 ALLOT 383 Parish OF No documents of specific relevance for contaminated land identified; property file records include various building 31 Bremner Road OPAHEKE consents, plans, and subdivision records. Pt Lot 4 SEC 4 Parish OF OPAHEKE, Pt Lot 5 SEC 4 This work was completed to assess subsoil conditions to support installation of 11 amenity lighting columns. 11 hand Parish OF augers were completed to 3.0m. Ground conditions were found to comprise topsoil, over silt and clay of the Puketoka 2015, Geoconsult Geotechnical Consultants, Geotechnical Investigation Report, Proposed Amenity Lighting, 18 Victoria Street OPAHEKE Formation. Drury Sports Complex. ALLOT 390 Parish OPAHEKE, Site history section suggests the site was bought by the ministry of works for motorway extentions however in 1975 it PT ALLOT was identified that this area was surplus to requirements. In 1984 proposals were put forward for Sporting Complex. 47 Parish Prior to this there has been a shed and pigsty on the property. Four boreholes were completed by Terra Test which 1985 Application to Franklin County Council for the development of Community Sports and Recreation 20 Victoria Street OPAHEKE identified topsoil over clay. Centre at 20 Victoria Street, (Ref: 373/442/3) ALLOT 390 GHD undertook ground investigation in the south of Drury Sports Field (BH501 - fill of silt to 2.16 underlain by clay Parish and sand to 19.80m, SS01), along Mercer Street (BH405, fill to 0.7 over silt to 6.45) and Flanagan Road (BH403 - silt OPAHEKE, to 14m). Test results from BH501 showed only trace levels of TPH in near surface. The DSI concluded that soil and PT ALLOT groundwater in the vicinity of the proposed main are unlikely to pose a risk to human health and the environment. 47 Parish Shallow groundwater samples reported concentrations of chromium, nickel and zinc above ANZECC 2000 freshwater GHD, 2019, Drury South Wastewater Servicing, Rising Main Alignment Detailed Site Investigation. (Ref: 20 Victoria Street OPAHEKE guidelines. 51/37513 and Contaminated Land Management Plan (seperate doc) ALLOT 390 Parish OPAHEKE, PT ALLOT 47 Parish Focus Environmental Services Ltd, Preliminary Site Investigation, Proposed Watermain Route, Oranga Ba 20 Victoria Street OPAHEKE Discussed in body of PSI report. Development, 2015 (Ref: 0522.001). ALLOT 390 Parish OPAHEKE, Application by Watercare for continuation of rising main, a gravity sewer line through multiple properties including the PT ALLOT southern boundary of Drury Sports Complex and under Ngakoroa Stream, along Mercer Street and Flanagan Road. 47 Parish The report notes that the PSI identified the Drury Sports Complex to contain uncertified fill. But notes that this is Tollemarch Consultants Ltd, February 2019, Assessment of Effects on the Environment. Drury South 20 Victoria Street OPAHEKE unfounded. It was recommended that a CSMP was completed. Wastewater Servicing Package 3. Rising Main and Gravity Sewer. ALLOT 390 Parish OPAHEKE, PT ALLOT GHD undertook a PSI of the southern portion of Drury Sports Field, Mercer St and Flanagan Road. HAIL activities 47 Parish were noted at Drury Sports Field A10 (sports turf), and E1 (demolished structures), and Mercer Street F4 (vehicle GHD, 2018, Drury South Wastewater Servicing, Rising Main Alignment Preliminary Site Investigation. (Ref: 20 Victoria Street OPAHEKE workshop), H, I and A17 (fuel storage). 51/37513 Waste water control areas: Property may need to be connected to the Drury Wastewater Treatment Plant. Controls are in place for new connections and approval must be sought from United Water. Flood Zone: The property is in an area in respect of which Council does not possess any information suggesting that there is an above normal risk of flooding, or any technical data suggesting that it is within a 100 year flood hazard area. SECT 1 SO Stormwater Catchment Rate Per Unit of Demand: 3229 24 Mercer Street 510641 1999, Incoming Correspondence 2 LOT 2 DP 92474, Drillers log. Log shows depth is 79.50m, static water level is 4m, pump depth is 40m. Water quality is good. Ground SEC 1 SO conditions comprise; 0-6m yellow brown clay, 6-43 clay-sand, 43-46.5 soft brown sandstone, 46.5-75 blue sand, 60 Mercer Street 66956 some clay, 75-81 blue rock, 81.2-85 layers of sand. Groundwater Driller's Log Form, Altom Drilling, 2001, Bore ID 21217 Includes a letter statting that the tanks to be reprocessed on site contain little toxic sludge. That the residue remaining in the tanks is removed prior to the tanks being transported to the yard. Any residue is vaccumed to an on-site sludge tank, which is then removed from site. The tank is steam washed and tested with a gas detector. Once it's free from gasoline it is then cut into sections. Water used for washing and steaming is recycled, and the system is completely self contained.. There is also advice from the council on management procedures that need to be in place, including installation of LOT 1 DP monitoring wells, impermeable liners of dump tanks, buffer spaces etc. 92474, A proposed site plan shows the following buildings on site - Truck Implementation Shed, Offices, Processing pit and SEC 1 SO sludge trap, and a dangerous goods storage area in the north of the property, including a 50000 litre underground 30 Mercer Street 69741 dump tank. 1992, Application by Steel Tank Management Ltd to establish a Steel Tank decomissioning facility (7/1/24B) Lot 1 DP Sampling was conducted of the onsite monitoring wells at Steel Tank Management. The following observations were 92474, noted. Sludge, gravel, silt and oily residue were on the metal lid. Oily water was sitting in the concrete base, oily grime SEC 1 SO was noted inside the well and on perging of the well there was oily residue on surface of the water. It was concluded 30 Mercer Street 69741 that there has been ingress of surface water / oils into the well casing. 2006 Watercare Services Limited. Letter to Eric Sinclair of 30 Mercer Street Lot 1 DP An Assessment of Environmental Effects (AEE) has been prepared. The summary indicates that no adverse effects 92474, are likely. The discharge is by leaching from residual contamination in the soil during infiltration by rainfall to SEC 1 SO groundwater. 2004, Tonkin and Taylor, Proposed Resource Consent to Discharge Contaminants to Groundwater at 30 30 Mercer Street 69741 BTEX and napthalene concentrations were above ANZEC95% freshwater guidelines at site boundary. Mercer Street. Ground conditions comprise silty clays of Tauranga Group to 8m, over marine silty sands which are reported to Lot 1 DP comprise an aquifer. Groundwater is 3.5m below surface. Groundwater flow is towards Ngakoroa Stream, 100m 92474, northwest of the site. Soil sampling showed presence of volatiles, but TPH and BTEX below Tier 1. Groundwater SEC 1 SO sampling reported concentrations of TPH and BTEX exceeding ANZECC 95%. Attentuation of BTEX is occuring. 30 Mercer Street 69741 There was an incident in 1996 where 2000L diesel was spilled onto site and surrounding land. 2003, Tonkin and Taylor Proposed Strategy of Environmental Work for 30 Mercer Street, Ref: 21240 Lot 1 DP 92474, Nine test pits were completed to 1m, shallow and 0.5m samples were collected. Samples were also collected from SEC 1 SO the base of an old tank excavation.Soils showed concentrations of metals and TPH above permitted activity criteria. 30 Mercer Street 69741 Strong odours and staining were observed on site. Remediation of shallow soils was recommended. 2012, Detailed Site Investigation and Remediation Action Plan, Focus Environmental Services Ltd Site history summary includes: Site was used by a business which processed tanks from 1988-2006. Land use consent was given in 1994, conditions included requirement for lined pit beneath the concrete processing pad and sludge tank, and ongoing monitoring. The site was poorly managed and several abatement notices were issued. The site has been vacant for a number of years. No records of groundwater sampling since 2003. A site visit was Lot 1 DP undertaken and the majority of tanks had been removed, there was no evidence of a lined pit. 92474, SEC 1 SO The consent notes that contaminating activtiies may exist in areas beyond the areas currently indicated for 30 Mercer Street 69741 remediation, this includes beneath the buildings. Application for consent for remediation (Ref: R/LUC/2012/3586) 30 Mercer Street, 2012 Lot 2 DP 92474, SEC 1 SO 60 Mercer Street 66956 Plans showing design of an implentation (hobby) shed, which will include a residence. Williams Consultants Ltd, Proposed Utility and Implement Building for Mr Stubeli (2001). Lot 2 DP 92474, SEC 1 SO Letter stating that AC visited property to check compliance with conditions of bore permit. It was noted that there is 60 Mercer Street 66956 tendence for water to collect in between the casings, thereby creating the possibility of corrosion and seepage. 2002, Compliance Monitoring Site Inspection: Bore Permit, Auckland Regional Council Lot 2 DP 92474, SEC 1 SO Letter states that foundation soils were tested and identified 1.5m of concrete fines fill on top of natural silty clay 60 Mercer Street 66956 alluvial deposits. 2001, Willams Consultants Ltd, Proposed Utility Buiding at Mercer Stret Drury (Ref 99/451) PT ALLOT 38 Parish OF OPAHEKE, Lot 1 DP 502044, AECOM - A January, 1981 proposal was submitted to build a truck stop and in February, 1981 objection was filed ALLOT 402 against the proposed construction of a truck stop. No additional documentation relating to the construction of a truck Parish OF stop was available for review. AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay 68 Pitt Road, Drury OPAHEKE Widening, Ref: 60545688 PT ALLOT 38 Parish OF OPAHEKE, Lot 1 DP 502044, ALLOT 402 Parish OF 68 Pitt Road OPAHEKE Fletchers Transport submitted a proposal for a service facility for heavy transport and for general motorists. Letter: Fletchers Transport Ltd to Franklin County Council 5 January, 1981 PT ALLOT 38 Parish OF OPAHEKE, Lot 1 DP 502044, ALLOT 402 Parish OF Various documents in the property file indicate that objections were raised to the proposed service centre and the 68 Pitt Road OPAHEKE proposal was subsequently withdrawn. Lot 36 DP No documents of specific relevance for contaminated land identified; property file records indicate construction of a 13 Bexley Place 61513 dwelling, a garage, a swimming pool and related works.

2 Property File Summary Papakura to Bombay Preliminary Site Investigation Stage 1 506207-0310-REP-KF-0035, 9/12/2019

Address Parcel ID Pertinent Documents / Information Source Geology: Geological records indicate that the site comprises shallow Pleistocene alluvial deposits, typically silts and sands with some clay and with occasional lenses of peat and organic clay. These alluvial deposits overlie gently dipping Waitemata Group sandstones and mudstones of the Miocene Age. Groundwater: The water table was typically encountered at depths ranging from 2.4 to 2.9 metres below existing Lot 15 DP ground level. However, groundwater was not encountered within borehole HA03 at the time of investigation. 19 Dumas Place 488727 2017, Geotechnical Report by Dodd Civil Consultants Ltd PT ALLOT 3 DP 118 Beach Road 14721 Nothing on file, empty lot. Lot 8 DP Soil strengths are extremely low for the top 6 metres with SPT N=0. From 6.5m the sequence changed to Clayey Silts 15 Dumas Place 488727 and Silty Sands, N values generally 10 to 25. Geotechnical Site Investigation October 1998, Telecom Mobile Communications Limited Lot 8 DP No documents of specific relevance for contaminated land identified; property file records include various building 15 Dumas Place 488727 consents, plans, and subdivision records. Lot 15 DP A 21 residential lot subdivision is to be developed. Bulk earthworks to develop the site. Approximately 1000m^3 of cut 19 Dumas Place 488727 and 4000m^3 of fill. A number of non-protected exotic trees will be removed. 2017, Current Expired Resource Consent by Dodd Civil Consultants Ltd Lot 15 DP 19 Dumas Place 488727 Six hand augers were completed to 3m. Fill was encountered in one location to a depth of 0.6m. Coffey, Geotechnical Investigation Report on Residential Subdivision, 2010 (Ref: GENZNEWP14590) Lot 7 DP Soil strengths are extremely low for the top 6 metres with SPT N=0. From 6.5m the sequence changed to Clayey Silts 17 Dumas Place 488727 and Silty Sands, N values generally 10 to 25. Geotechnical Site Investigation October 1998, Telecom Mobile Communications Limited Lot 7 DP 17 Dumas Place 488727 Documents similar to 15 Dumas Place Lot 7 DP No documents of specific relevance for contaminated land identified; property file records include various building 17 Dumas Place 488727 consents, plans, and subdivision records. This site has children's playground equipment installed. Lot 31 DP The proposed project is sited on Reserve zoned land and is subject to the rules of the District Plan for that zone. 77147, Lot Flood Hazard Zone - council planning maps based on 1% storm flood assessment of district. Corrosion Zone - Zone 32 DP 1 NZS3604:1999. Earthquake Zone C. 63R Chichester Drive 77147 2007, Project Information Memorandum No.23270 Lot 31 DP 77147, Lot 32 DP 63R Chichester Drive 77147 Plans from 1975 shows this lot to be designated a recreational reserve. 1976, Certificate of Title under Land Transfer Act, Ref: C/T 28A/859 Lot 208 DP No documents of specific relevance for contaminated land identified; property file records include various building 119 Chichester Drive 60457 consents and plans No documents of specific relevance for contaminated land identified. Floor plans show the presence of a residence Lot 1 DP and car park. A letter from 1977 states that there is surface water flooding at the property after periods of heavy 57 Park Estate Road 77469 rainfall due to inadequate drainage. Consent application for a externsion to land use and subdivision consent. The consent holder shall undertake the Lot 18 DP remediation of the site contamination as proposed in the report prepared by Dodd Civil Consultants Ltd titled 496450, "Contamination Report, Stage 1 - Preliminary Site Inspection 46 Park Estate Road, Papakura, Park Estate Venture 1/23 SH Limited" DCC Ref: 272/03, April 2008, and submitted as part of the resource consent application. Lot 24 DP (*CONTAMINATION REPORT IS NOT IN THE FOLDER, I WENT THROUGH ALL THE FILES BIGGER THAN 18 46 Park Estate Road 496450 500KB IN THE FOLDER) 2014, Resource Consents - extension of time Lot 18 DP 496450, 1/23 SH Site history is detailed as a residence and a number of sheds. Ground investigation comprised the completion of four Lot 24 DP hand augers. Fill was encountered to 1.4m deep in the north of the site. Fill was described as being placed during the 18 46 Park Estate Road 496450 late 1980s and are considered to be non engineered and not suitable for residential type foundations. Ground Consulting Ltd, Dodd Civil Consultants (Ref: R0155-1) Lot 18 DP This report was completed in support of a resource consent application for a subdivision. The site is used as 496450, residential dwelling, mechanical workshop and sheep grazing. The workshop activities involve ths storage and 1/23 SH handling of a moderate amount of petroleum based products. The sheds have been used as a workshop since 1983 Lot 24 DP (servicing and maintenance of trucks), and clay filling also occured in 1986 and more recent earthworks associated 18 46 Park Estate Road 496450 with motorway service centre off-ramp. Stage 1 - Preliminary Site Inspection, 46 Park Estate Road, Papakrua, Dodd Civil Consultants Ltd Pt Lot 7 DP 4963, PT ALLOT 311 This site contains Park Estate Primary School and in the north-western corner, Park Estate Kindergarten. Conditions Parish OF of consent don't specifically mention contamination, however advice notes cover appropriate management of Combined Outline Plan of Works and Resource Consent Application for Child Care Centre at 38 Park Estate 38 Park Estate Road OPAHEKE asbestos containing materials and lead. Road, Papakura. Eclipse Group Ltd, 2018 ACH Consulting Engineers Ltd has been engaged by Counties Manukau Kindergarten Assoc to complete a flood risk assessment, provide a stormwater mitigation design and check the capacity of the public wastewater network for the proposed development at 38 Park Estate Road, Papakura • The development will not be affected by flooding resulting from the 1% AEP rainfall event. Pt Lot 7 DP • Upstream and downstream neighbours will remain unaffected by the development. 4963, PT • Proposed stormwater mitigation provided by a 13,500 L reuse tank complies with hydrology mitigation requirements ALLOT 311 for SMAF 2 areas. Parish OF • There are no capacity issues/restrictions in the immediate wastewater catchment. The wastewater network capacity Flood Risk Assessment & Stormwater Mitigation 38 Park Estate Road OPAHEKE is sufficient for the proposed development. 38 Park Estate Road Papakura, ACH Consulting Engineers, 2017 LOT 5 DP 211045 - HAVE A The backfilling and compaction of the live stormwater and sanitary sewer trenches on this subdivision has where 1/9 SH IN possible been carried out to appropriate standards. No building development should take place within the 45 degree LOT 9 DP zone of influence of pipe inverts unless endorsed by specific site investigations and foundation designs. The 45 Parkhaven Drive 211045 abandoned stormwater sewer line passing through lots7 and 8 has been removed and the trench has been hardfilled. Project Information Memorandum - Papakura District Council LOT 5 DP 211045 - HAVE A 1/9 SH IN LOT 9 DP No documents of specific relevance for contaminated land identified; property file records include various building 45 Parkhaven Drive 211045 consents, plans, structural calculations and subdivision records. AECOM - A 1998 proposal was reviewed for BP Oil New Zealand Limited to construct an automotive fuelling and LOT 10 DP service station. A 2001 resource consent application requested to add five fuel pumps to the existing five fuel pumps 211045 - onsite. Dangerous goods licences dating from as early as 2002 described one, 4,000 kilogram tank of liquefied HAVE A petroleum gas (LPG), three, 100,000-litre petrol underground storage tanks (USTs), and three, 130,000-litre diesel 53 Parkhaven Drive, 1/9 SH IN USTs onsite. A 2005 building consent requested decommissioning the onsite septic tank and connect the site to Papakura (BP Papakura LOT 9 DP reticulated sewerage services. A 2014 Resource consent application for installation of 5000 litre above ground adblue AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay Service Centre) 21104 storage tank. Widening, Ref: 60545688 LOT 10 DP 211045 - HAVE A 53 Parkhaven Drive, 1/9 SH IN Ground investigations were undertaken. Ground conditions comprised topsoil, over colluvium (silt and clay), over Papakura (BP Papakura LOT 9 DP Puketoka formation (clay and silt). Shallow groundwater was encountered in the lower parts of the site. The report Service Centre) 21104 suggests some dewatering may be required for excavations required for underground tanks. BP Pakapuka Geotechnical Report, 1997, Woodward Clyde (NZ Ltd). Lot 102 DP 105 Parkhaven Drive 473202 2010 – Building consent to remove dwelling from the site. (561 Great South Road) Papakura District Council, Code Compliance Certificate, 2009 (Ref: BCASF7) Application states that Engineering approval and subdivision consent was received for 561 Great South Road. but Lot 102 DP due to market conditions the work is on hold (2012). In 2014 a building consent was issued for the construction of a 105 Parkhaven Drive 473202 single dwelling in the new lot 105 Parkhaven Drive. Application for extension on time for subdivision. Papakura District Council 2012 Site Description: The site is currently being earthworked under resource consent LU 9162 for the construction of a stormwater pond. The construction of the stormwater pond is near completion. The remainder of the site is currently in grass. The vegetation on the subject site is limited to hedging around the existing dwelling at 587 Great South Road, along the boundary of the Southern Motorway and along the southern boundary of 587 Great South Road. The vegetation along the southern boundary of 587 Great South Road consists of small trees and hedging.

Site History: The construction of the stormwater pond has been previously approved by resource consent LU9162. This resource Lot 1 DP consent granted on the 17 November 2009 included 589r Great South Rd 433619 approval for earthworks of 12,500 m^3 and the removal of seven protected trees. 2010, Clendon Properties Limited draft to Papakura District Council

Includes letters that the SW pond has been bought from Clendon Properties by Council. A subdivision was done to Lot 1 DP put the pond land into a new title to pass into Council ownership. Clendon Properties Limited authorized Papakura 589r Great South Rd 433619 District Council to lodge a subdivision consent to create a lot for the Drury Triangle Catchment Stormwater pond. 2010, letters between Papakura District Council and Clendon Properties Limited Lot 1 DP Contamination: N/A Site is being earthworked under resource consent 9162. 589r Great South Rd 433619 Hazards: N/A 2010, preliminary check sheet for resource consent applications The site is located between southern motorway and Great South Road, immediately north of Slippery Creek. Was created by 5 lot subdivision in 1999. It was created as an easement for drainage purposes. Easement for water can Lot 5 DP be reduced to allow for construction, operation and maintenance related to proposed stormwater treatment pond at Application to vary the existing easement to drain water, Papakura District Council, 2009 (Ref: P-599 Great 599 Great South Road 198957 Hulls Reserve. South Road) Includes an application to construct a mechanical repairs garage 1m (to wall) 550mm (eaves) from the common boundary with the grassed reserve area adjoining the tidal stream located east of the motorway. The proposal Lot 1 DP infringes the 25m Coastal Yard Requirement of the District Plan. 135-137 Great south Rd 120070 Plan shows two buildings on site, a garage and a factory, date of construction is considered to be 1968. 2001, Land Use Consent ALLOT 72 SEC 6 Village OF DRURY, ALLOT 73 SEC 6 Documents detailing the application for construction of a pedestrian swing bridge across Slippery Creek. Which did Village OF not go ahead. A Certificate of Title was reviewed confirming the presence of a wastewater pump station and tank 2R Creek St DRURY within the reserve (sewage treatment station). Certificate of Title (NA67B/576) 1988

3 Property File Summary Papakura to Bombay Preliminary Site Investigation Stage 1 506207-0310-REP-KF-0035, 9/12/2019

Address Parcel ID Pertinent Documents / Information Source AECOM- According to the property records reviewed, the site was improved with a 13,500 litre diesel fuel Fletcher Construction underground storage tank (UST) and pump, and stored waste oil and kerosene onsite as well. The property was 5 Creek Street, improved with a paint booth, grit blasting bay, and vehicle/equipment wash bay. The wash bay was improved with a Drury Pt Lot 3 DP grease trap and at least one undated dangerous goods licence inspection diagram depicted drainage from the wash AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay 111728 bay directed into the east adjacent Hingaia Stream. Widening, Ref: 60545688 Early documentation suggests the original development was as Firth Industries - Concrete Product Manufactures - Natural Stone Division. And, as well as being located at 70 Firth Street, it extended into 15-23 Creek Street. Plans Lot 1 DP also show filling proposed in the southern portion of 15-19 Creek Street in the location fronting onto the highway. 1987, Plans prepared by Rowe McInnes & Read Surveyors and Town Planners - Proposed Engineering 70 Firth Street 111727 Compac engineering is shown in 23 Creek Street. Developments for Lots 1 &2 Being SUBDN of PT Allot 37 Opaheke Parish. Letter stating that Firth Industries Ltd is a well established business of concrete manufacturing on land in Drury and that the plan comprises principally of a factory building used for manufacture of concrete blocks, and the other half for manufacture of concrete troughs and tanks. The property faces onto the motorway. Firth has bought a stone processing and masonary business which it would like to move to Drury. Firth proposes to move its trough and tank business to Hamilton to make way for stone processing business. Masonary can include cutting, polishing and Lot 1 DP sandblasting operations. It details that cutting processes will be wet. Solvents will be used in the polishing of stones - Submissions of Counsel for the applicant - Application to Franklin County Council by Firth Industries. (No 70 Firth Street 111727 settling ponds will be installed to treat water before its discharged. date given) AECOM - Prior to 1989 the site was developed with a Firth Industries factory. The factory was demolished following transfer of the property to Dunbar Properties in 1989 and the resulting construction and demolition debris was ploughed beneath a parking lot onsite. Notices filed in 1990 and 1991 described the unapproved deposition of uncertified fill on the site. Records indicate that the site was occupied by a buildings removal company in 1991. A Lot 1 DP 1999 notice from the former Auckland Regional Council (ARC) detailed the discovery lumber which had been treated Concrete Facility / Max 126843, PT leaking chromated copper arsenate (CCA) at an offsite weighbridge. A 2013 consent application included plans to Birt Sawmills 15-19 Creek LOT 2 DP build a concrete and metal storage facility on the northern four-fifths of the site. AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay Street, Drury 111729 Widening, Ref: 60545688 ALLOT 340 Parish OF OPAHEKE, Lot 2 DP Multi-tenant Commercial 116293, Structure / 23 Creek Lot 1 DP Street, Drury 116293, AECOM -Dangerous Goods Licences dating to 1992, 1995, 1996 described 2, 418-litre containers and 3, 60-litre Lot 2 DP drums of flammable liquids onsite. A 2007 application described the construction of commercial and industrial AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay 163340 structures onsite. Widening, Ref: 60545688 ALLOT 340 Parish OF OPAHEKE, Lot 2 DP 116293, Lot 1 DP Multi-tenant Commercial 116293, Structure, 31 Creek Lot 2 DP AECOM - Records dating from 1999 and 2000 indicated that a restaurant was operational onsite. A 2000 design AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay Street, Drury 163340 drawing depicted a cesspit located along the western side of the property. Widening, Ref: 60545688 AECOM -Records dating to 1969 described the property developed by the Poultrymen’s Co- operative Limited as a factory for the manufacture of light industrial loaders with a paint booth. A 2003 memorandum from the former Papakura District Council (PDC) detailed the improper storage of materials on council property by lessees of the Jacob Demolition 35 Lot 1 DP property, Jacob Demolition. Records from 2016 detailed the proposed expansion of the south adjacent Counties AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay Creek Street, Drury 163340 Ready Mix Limited concrete and aggregate storage yard and mixing facility onto the site. Widening, Ref: 60545688 AECOM - A 1945 property deed described the transfer of property ownership to the New Zealand Co-Operative Dairy Company Limited. Records dating to 2000 described the improvement of the property as the Counties Ready Mix Limited concrete and aggregate storage yard and mixing facility. Vehicle and equipment washing was performed onsite, and an associated oil-water separator was installed onsite. A 2010 building consent application proposed the Counties Ready Mix Lot 7 - 16 installation of a fuel storage and dispensing facility, and a 2010 aboveground storage tank (AST) in-service test Limited / SEC 3 certification described a 15,500-litre diesel AST onsite. Records from 2016 detailed the proposed expansion of 51 Creek Street, Drury Deeds Reg Counties Ready Mix Limited onto the north adjacent site AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay 35, Widening, Ref: 60545688 Multi-tenant Industrial Structure / 69 Creek Lot 1 DP AECOM - A 1993 Resource Consent application sought to continue development of the site with a series of industrial AECOM, Dec 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay Street, Drury 201670 building units, construction of which had originally begun in 1989. Widening, Ref: 60545688 Lot 1 DP 69 Creek Steet 201670 The report identifies that the lot is used as a furniture works and cabinant makers. Survey Inspection Report, 2002

Application to Establish a Telecommunications Facility in the southern corner of the lot used as Skilton Truck Parts. Lot 3 DP The facility will comprise a monopole, antennas and equipment cabineets. A photograph on Page 23 shows the site to Property Document Report, Papakura District Council, Report for Permitted Activity Application, 87 Creek 87 Creek Street 201670 comprise multiple truck parts stockpiled across the site, as well as mulitple drums stored in towers and on their sides. Road, 2007 Lot 3 DP Application for consent to erect an engineering workshop on Allot 347 Opaheke Parish by Mr Bright of Commins 87 Creek Street 201670 Engine Parts Application for Planning Consent, Franklin County Council, 1985 (Ref: 373/442/2). Lot 3 DP Dangerous Goods Licence for the storage of flammable paints and thinners including 250 x 1000 litres. Issued in 87 Creek Street 201670 2000 and 2001. Dangerous Goods Licence, District of Papakura , Furniture One Limited, 87 Creek Street. Oct 2001 LOT 11 SECT 5 PARO Application for installation of water bores on behalf of Scania New Zealand, for groundwater observation and Opaheke, environmental sampling, by Tonkin and Taylor. Proposed chemical analysis includes PAH, TPH, VOCs and SVOCs. 38 Norrie Road Lot 1 DP The plan shows 8 soil bores, and 2 proposed groundwater wells. Auckland Council Application for Water Permit - Bores (September 2019). SECT 5 PARO Opaheke, Lot 1 DP 41305, Lot Plan shows the proposed location of proposed truckwash, cleaning platform and workshop in the southeastern portion 38 Norrie Road 3 DP of the lot. Workshop may include paint spray, welding booth, machine workshop and parts storage. Site Plan -, Hill Design Engineering, Proposed Workshop for HEB contractors (1997) SECT 5 PARO Opaheke, Lot 1 DP 41305, Lot The lot was previously occupied by HEB Contractors which may be affilated with Keith Hay Homes. A Prebyterian 38 Norrie Road 3 DP Church is present on site. Joyce Group Ta Services Limited, HEB Building Consent, 12/7/2001 LOT 1 & 2DP Multiple documents detailing the building consents and building specification for houses being constructed by Keith 10 and 20 Firth Street 130158 Hay Homes. Documents included detail of using cladding products by James Hardie such as weatherboard. LOT 1 & The application states that the lot is used as a building yard, as well as show house. Homes are constructed on site, 2DP given the relevant certificates and paperwork and then relocated. The application includes a new proposed sleepout. 10 and 20 Firth Street 130158 Application indicates Keith Hay Homes have been on site since 1980s. Application for Project Information, Auckland Council, 2011. Lot 2 DP 81 Creek Street 201670 Plan showing proposed site layout including offices, new building (with roller door) and truck access. Sketch not to scale, Barlow Marine Ltd (no date) Lot 2 DP Plan for Webb and Holmes Enterprises, shows a double garage workshop in the rear of the lot with parking and an 81 Creek Street 201670 office in the front. Vogue Villas Ltd – Proposed Office for Webb and Holmes Enterprises (1990) Ref: 0386/01. ALLOT 339 301 and 305 Great South Parish OF Road OPAHEKE No information on file. SO 65144, SEC 1 SO 65144, PT RAILWAY Land was aquired by the Crown as part of acquisitions that took place for the motorway and realignment of adjacent LAND SO roads. It was classified as recreation reserve in 1991. In 1990 the land was vested to council and used temporarily to District Council of Papakura, 1996, Enquiries regarding the possibility of utilising 10 Karaka Rd, Drury as a 10R Karaka Road 47014 store and display equipment. There are many refused applications for the purchase or lease of this land. site for a church PT ALLOT 38 Parish OF OPAHEKE, PT ALLOT 258 Parish OF As built from 1997 showing a terraced house, veranda and car ports at the front of the property, and a shed and pig 168 Flanagan Drive OPAHEKE sty in the rear. Plan and Report Prepared by AM Charman, April 1997 “As Built”. The site is level at road frontage then approxiamately 8 metres behind the exchange it falls down to a stream. The site contains a single storey telephone exchange building with an outbuilding. The land to the south is in pasture. To the east is pasture with the odd tree interspersed. On the first ridge to the east is a dwelling. To the north east is a PT ALLOT group of fern trees and further to the north east is the Drury township. Some 100 metres to the east is a line of high 1 DP tension power lines linking Auckland with points further south. There are concerns about health issues relating to the 180 Flanagan Road 47861 technology. Currently, all the standards have been met. 1992, Papakura District Council, Outline plan Existing Facility: 20m high tubular steel (climbable) mast 5 omni directional antennas PT ALLOT GPS antenna 1 DP radio equipment 180 Flanagan Road 47861 2004, Application for a certificate of compliance pursuant Assessment of effects on the environment: Visual impact, health and safety, and noise are considered to be the only perceived effects relevant to the upgrading of the existing Mobile Phone Site facilies. RF emission levels from the proposed upgraded facility will be significantly below the limit in NZS 2772.1:1999 at any point where people have access. The equipment rooms, containers and PT ALLOT cabinets used by Telecom are securely locked and monitored 24 hours a day for illegal tampering, fire and break- 1 DP down. All electrical wires and cables will remain covered to prevent electrical accidents. 180 Flanagan Road 47861 2000, GHD, Mobile Phone Sites with cdmaOne Upgrade, Telecom New Zealand Ltd

4 Property File Summary Papakura to Bombay Preliminary Site Investigation Stage 1 506207-0310-REP-KF-0035, 9/12/2019

Address Parcel ID Pertinent Documents / Information Source Effects Related to Stormwater: The retention of the existing shed would increase the impervious area to approximately 2,200 m2, well below the ALLOT 422 maximum of 5,000 m2. Therefore, all stormwater effects resulting from the retention of the existing shed can form Parish OF part of the permitted baseline offered by Rule E8.4.1(7) of the AUP, and all such effects should be disregarded under 190 Flanagan Road OPAHEKE section 104(2) of the RMA. 2017, AAEE for Change of Condition, CIVILPLAN Consultants The sites to the north, east and south comprises rural farm land and open fields. An existing workshop is also located on site. Hingaia Stream borders the site to the east hence why parts of the site to the east are identified as being with the 1% AEP Floodplain. ALLOT 422 As the earthworks will be limited to the creation of a building platform and parking and manoeuvring areas, the Parish OF alteration to the natural landscape will be minimal with little vegetation removal. 190 Flanagan Road OPAHEKE 2016, Resource Consents (Ref: R/LUC/2016/2571 and R/REG/2016/3645). Subsoil conditions: Borehole1, encountered 0.3m fill over topsoil to 0.6m over stiff insensitive clayey silts to the end of the hole at 2.80m. BH2 encountered 2.0m fill over moderate to soft strength easturine deposits to 2.5m. ALLOT 422 Due to the difficulty in drilling this hole it was only possible to probe to firm ground at around 2.60m. Ground water Parish OF was not encountered in either hole. 190 Flanagan Road OPAHEKE 1995, HDE Report, Letter: Proposed House at 190 Flanagan Road. The site has historically been used for countryside living/storage and until recent purchase was in an untidy state with shipping containers and outdoor storage of steel and wood. There is a telephone exchange within a building on the northern boundary and private property beside this. Land use consent was granted on 15 March 2010 to establish a farm machinery repair operation and drilling contractors yard on the site. Approximately 40% of the property is located within a recognised flood hazard area. The area of earthworking activity will generally be limited to the building foot print approx 450m^2. Volume ALLOT 422 approximately 50m^3. Parish OF Due to the elevated location of the site, it is anticipated ground water will be at least 2 metres below ground level. As 190 Flanagan Road OPAHEKE such trench disposal will not impact on ground water. 2013, Application for Resource Consents (Ref: R/LUC/2013/42/75)

5

Attachment 5 Survey Plans

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Attachment 6 Historic Aerial Photographs Review Table 0-2 Historic Aerial Photographs Review

Year and source Papakura Interchange to Park Estate Park Estate Road to Bremner Road (CH11400- Bremner Road to Drury Interchange Road (CH9600-11400) 13740) (CH13740-CH-100 (Stage 2))

1939 and 1942 -1:16000 The area is predominantly rural The area is predominantly rural farmland. At around The area south of Bremner Road is (provided by Opus, farmland, separated into tree lined lots. CH11700-12080 a large depression is evident, likely an predominantly rural. Low lying land is present combined) The highway has not been constructed. erosional feature associated with Drury Creek (location west and just south of Bremner Road in the Hingaia Road (CH10040-10060) is of current highway and BP services). Rising out of this location of the current Drury Sports Field. A shown as a single lane, tree lined road. depression, there is a second smaller depression number of properties are present north of old A small property is present within the (CH12080-12200). A gully feature crosses the study Bremner Road (including within the designation just south of Hingaia Rd. area CH12540. designation), and to the east in the area of Drury. A depression/gully is shown in the A further depression is evident on the northern banks designation at CH10400. A drainage of Otūwairoa (Slippery Creek) CH12700-12780. A road (continuation of Norrie Rd) enters the channel is also shown at approximately Residences / farm buildings are shown just west of designation at CH13920-13940, and trends CH10460. Great South Road, approximately 200m east of the south, Great South Road joins this road, and the designation. road trends south in the location of the current Park Estate Road is shown as a dual highway. lane road; a number of residential lots Otūwairoa (Slippery Creek) is in a similar configuration are located off this road, including as today and appears tree / vegetation lined. A large Four properties are present, within designation, within current designation, south and building is present in the location of the current (west of the road) where Great South Road north of the road. These lots may have Otūwairoa (Slippery Creek) Reserve. joins. Mercer Street is shown. been undertaking horticultural Opaheke peninsula is undeveloped; however, the land The North Island Main Trunk line (NIMT) is activities. appears to be maintained. The western extent appears present in its current location, approximately as wetland. A gully is shown crossing the designation 100m north east of the highway is a train yard. A around CH13000. Some mounding / contouring is significant depression (oxbow lake) is shown the apparent between CH13200-13640. Bremner Road is location of the current Karaka Reserve (adjacent shown crossing the designation. A number of small east to Drury Interchange), adjacent to the train residences are apparent within the designation just yard (with sidings). Just south of the railway north of Bremner Road. Drury is generally undeveloped tracks are some more residences (west of Great in the area adjacent to the highway designation; South Rd), and allotment gardens at however Creek St is present with a number of small approximately 180 Flanagan Road (east). Pitt units east of the street. Street is shown.

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1960 - 1:17000 (Stereo A single-track road has been Fields east of the highway, just north of Otūwairoa No significant change to Drury in the area pair, provided by OPUS) constructed in the location of SH1, (Slippery Creek) appear to have been worked. adjacent to the designation. (Additional north of Hingia Rd. development is apparent east of Otūwairoa No significant change. (Slippery Creek)). No significant change. Additional properties / residences have been The depression at Karaka Reserve may have constructed, within and just adjacent to the designation, been partially infilled. just north of Bremner Road.

1961 – 1:8000 and 1:8300 N/A No significant change Earthworks is being undertaken in train yard east of Karaka Reserve. (Retrolens Online, licensed by LINZ)

1963 – 1:12300 N/A N/A The area between Great South Road and Norrie Road (location of current 38 Norrie Road, 10 (Retrolens Online, Firth Street) has been worked, and additional licensed by LINZ) units are present in this area. Further east earthworks are apparent within the bend of the Hingaia Stream.

Oblique aerial N/A These obliques show the construction of SH1 south N/A photographs 1 & 2, 1963 from Pahurehure Inlet, earthworks at Papakura (Alexander Turnbull interchange extend into properties neighbouring the Library) Ref: WA-61079-G, interchange, WA- WA-60567-G

Oblique aerial N/A These obliques show the construction of Park Estate N/A photographs 7 & 8, 1964 Bridge. Significant filling is shown, required to elevate (Alexander Turnbull the bridge. Earthworks appear to encroach into 144 Library) Ref: WA-61838-G, Park Estate Road, south of the bridge just west of the WA-61832-G. highway.

Oblique aerial N/A These obliques show the construction of the highway N/A photographs 3, 4, 5, 6, 9, around Drury and Otūwairoa (Slippery Creek) Bridge. 10, 11, 12, 13, 1963-1965 Filling / earthworks are shown west of the highway, (Alexander Turnbull north of Otūwairoa (Slippery Creek) (144 Park Estate Library) Ref: WA-61842-G, Road) and south of Otūwairoa (Slippery Creek) along

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WA-61835-G, WA-65024- Opaheke peninsula, to the area north of Bremner F Road. In Drury, cutting is evident in the location of highway construction, with excess soils being placed south of Bremner Road both east and west of the highway (including Drury Sports Field (50m west of the highway)), Karaka Reserve and Flanagan Road area (adjacent east).

1967 - 1:8000 (Stereo pair, The highway (2 traffic lanes each The highway crosses predominantly rural land, with South of Bremner Road Bridge, minor provided by OPUS) direction) and Papakura Interchange scattered farm residences adjacent to the highway. The earthworks are evident both east (69-81 Creek have been constructed. Hingia Road erosion depression around CH11700-12080 appears to St) and west of the highway. Exposed soil is has been made into an overbridge and have been partially infilled; especially in the location of evident at Drury sports field, both on the banks widened. Overhead power lines have the highway; there is exposed soil evident north and of the river and adjacent to the highway. A shed been installed just east of the south of the highway. The gully feature at CH12540 is present in the south of the sports field. designation. The property within the has been culverted under the highway. Drury interchange has been constructed, designation (south of the interchange) Filling is evident in the depression on the northern including the Great South Rd and NIMT fly- has been demolished, and the gully at banks of Otūwairoa (Slippery Creek) CH12700-12780. overs. Earthworks is shown in this area, CH10400 has been infilled / culverted including Karaka Reserve, and around the on- under the highway. The drainage Otūwairoa (Slippery Creek) Bridge has been off ramps. The industrial area, 100m east of the channel is also likely to have been constructed. highway (adjacent to the off-ramp), around culverted. Earthworks is apparent along the Opaheke peninsula Norrie Street and Firth St, adjacent to Great A large lot undertaking horticultural (mostly in the western extent), with excess soil likely to South Road is being developed and units are activities is present approximately have been placed here. The gully at CH13000 appears present on the lot between Mercer St and Firth 100m east of the interchange. to have been partially infilled. A number of smaller St, off Great South Road. drainage channels have been cut / culverted under the Residential development is apparent South of Great South Road, Flanagan Rd has road along the peninsula. east of the designation around been constructed, as has the property at 168 Chichester Drive (from CH10740). Bremner Road has been made into an overbridge and Flanagan Rd. South of this, and just north of Park widened. The properties within the designation just The lots on Mercer St, 50m west of the highway, Estate Road the land (both east and north of Bremner Road have been demolished. are apparent (24-60), with buildings and storage west of the designation) is used for West of the highway - the properties at 31 Bremner present at 24-30. Previous units within the horticulture and pasture (CH11100- Road remain, external storage and stockpiling is highway designation have been demolished. 11420). Park Estate Road has been evident. Earthworks and filling is indicated in this made into an overbridge and widened. southern part of Opaheke Peninsula, exposed soils are The properties within the designation evident around gullies and the stream banks. have been demolished. East of the highway - The Drury industrial estate has

expanded. A number of units are shown west of Creek

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Street, directly adjacent to the highway (51 Creek St). Works / filling is evident, a result of the construction of an embankment between the highway and the units.

1969 – 1:5000 Earthworks is apparent south and east Earthworks is apparent in a line, parallel to and west of No significant change of the intersection, north of the gully at the highway between Park Estate Road and Otūwairoa (Retrolens Online, CH10400. (Slippery Creek). Possibly associated with utility licensed by LINZ) installation. Significant earthworks have been undertaken east of the highway, in the location of 70 Firth Street. A square unit has been earth worked and prepared and is likely associated with Firth Industries (concrete batching).

1971 – 1:7400 N/A N/A No significant change. (Retrolens Online, licensed by LINZ)

1972 – 1:3000 Residential development has occurred N/A N/A along the majority of Chichester Drive (Retrolens Online, just east of Papakura Interchange. licensed by LINZ) Horticultural activities are being undertaken in the current location of Erceg way (>100m from the highway). Some potential filling / earthworks is apparent in a small area south of the current Rosehill College. A drain is shown in this location.

1976 – 1:5550 N/A N/A No significant change (Retrolens Online, licensed by LINZ)

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1977 – 1:3000 Residential development has continued N/A N/A along Chichester Dr, in areas all but (Retrolens Online, 59-63. licensed by LINZ)

1978 - 1:8000 (Stereo pair, The horticulture lots north and east of Residential development has occurred just south and In the west, filling is no longer apparent at Drury provided by OPUS) Park Estate have been redeveloped east of the highway, and Park Estate School is sports field. The small unit in the south of the into residential. apparent (50m east). The lots west of Park Estate field is no longer apparent. Properties on Mercer School, adjacent east of the highway and south of Park Street are broadly in the same configuration, No significant change in the land use Estate Bridge comprise residences and sheds and are although significant external storage is no longer west of the highway. A sublot has likely undertaking pastoral farming. evident. Cropping is apparent at 60 Mercer formed just north and west of the Street. Some exposed soil is apparent along the interchange (14 Hilldene Road) No other significant change east or west of the highway southern side of the railway tracks. between Park Estate School and Otūwairoa (Slippery Creek). A small track is evident running parallel to and In the east, Drury estate has expanded further. west of the highway within 144 Park Estate Rd. However, in the area adjacent to the highway and east of Bremner Road there is not much East of the highway – The large property formerly development- just the church at 38 Norrie Road present in the location of Otūwairoa (Slippery Creek) and the units at 10 Firth Street. Karaka Reserve Reserve (100m east of the highway) has been (south of Great South Road) has been infilled. demolished, and a unit has been constructed. Truck The railway yard and sidings (150m east of the parking is apparent. The wastewater pump station is highway) appear to have been removed and shown. earthworks are apparent in this area. A small property is evident in the north of Opaheke Peninsula, 25m east of the highway. The gully at CH 13000 appears to have been fully infilled. Drury estate has expanded further. A unit has been built at 33/35 Creek St, and Firth St has been constructed. The unit at 70 Firth Street, extends west to the highway and shows significant external storage of tanks and concrete blocks, extending into 15-19 Creek Street. No significant change west of the highway between Otūwairoa (Slippery Creek) and SH1 Bremner Road Overbridge.

1979 – 1:3000 No significant change Earthworks is apparent in the north of 144 Park Estate No significant change Road.

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(Retrolens Online, licensed by LINZ)

1980 – 1:25000 Overhead power lines have been No significant change N/A installed trending parallel to and west (Retrolens Online, of Papakura interchange, with one licensed by LINZ) located within the off-ramp.

1981 – 1:25000 No significant change No significant change No significant change (Retrolens Online, licensed by LINZ)

1987 – 1:3000 No significant change N/A N/A (Retrolens Online, licensed by LINZ)

1988 - 1:25000 (Stereo The lot north and west of Papakura No significant change between Park Estate Road and West of the highway, Victoria Street has been pair, provided by OPUS) Interchange appears to be used for Otūwairoa (Slippery Creek) Bridge. constructed 30m west of the highway. Victoria farming. St trends south, parallel to and between the South of Otūwairoa (Slippery Creek), and east of the highway and Drury Sports fields. Horticulture is South of the interchange, New Zealand highway, land at 5 Creek Street (Opaheke Peninsula) apparent off Pitt Street, south of Drury Bloodstock (50m west of the highway) has been developed and appears to be used as a interchange and the railway tracks. is being constructed (10 Hinau Rd). storage yard. All of the lots along Creek Street, fronting The small farm buildings have been onto the highway are now occupied. East of the highway, the lots within Drury estate demolished. The gully at CH10400 is fronting onto the highway and off-ramps have No significant change between Otūwairoa (Slippery no longer evident been developed and are partially occupied Creek) Bridge and Bremner Road, west of the highway. (Norrie Rd and Creek St). Numerous trucks are No significant change east of the parked outside Skilton Truck Parts at 87 Creek highway. St. The former railway sidings adjacent to Karaka reserve appear as an empty, grassed lot.

2001 (Auckland Council West – The sublot at 14 Hildene Road East - Park Estate School has expanded slightly, and East – No significant change in the Drury estate Geomaps) is appears to be used for a gas there are sports fields present south of the school, just or Karaka Reserve. The lot which previously infrastructure (50m west). New Zealand east of the highway around CH11560-11660. A housed railway sidings is now used for storage highway services has been constructed at 53 (wood / pallets). South of the railway tracks,

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Bloodstock has been fully constructed Parkhaven Drive (CH11760 and 12080SB). This Flannagan Road is being extended south, and (10 Hinau Road). includes a motorway on and off-ramp, and large paved some earthworks are apparent in this area. parking area and commercial units. The BP Service East – No significant change. West – A number of buildings have been station is apparent within this area, with both a car and constructed in the centre of Drury sports field. truck refuelling area. Significant external storage is evident at 24-30 South of Otūwairoa (Slippery Creek), Drury has Mercer Street, possible drums. A residence has expanded in the area east of the highway. Mass been constructed at 60 Mercer Street, and other storage is apparent at 5 Creek St (Fletchers), multiple smaller residence are located adjacent. houses are stored at 70 Firth St, significant wood storage is apparent at 15-19 Creek St, and other industrial units and external storage are apparent at 23- 51 Creek Rd. West – No significant change is evident between Park Estate Bridge and Otūwairoa (Slippery Creek). A number of mounds are apparent within 144 Park Estate Road. Multiple gullies are present within this area, which could be used as for storing farm waste. South of Otūwairoa (Slippery Creek) there is an additional residence and farm buildings at 33 Bremner Road in the south of Opaheke peninsula (50m west of the highway).

2017 (Auckland Council Papakura interchange itself appears to West - No significant change between Park Estate West – Drury Sports Field is in a similar Geomaps) have been modified. Beach Road Bridge and SH1 Bremner Road Overbridge. configuration, however 5 circular tanks are overbridge has been widened, as have shown adjacent to one of the building units East – A residential development has occurred just the on and off-ramps (possibly water), approximately 100m from the east of the highway and south of the bridge at 46 Park highway. Further west, across the Ngakoroa West – Harbourside Drive has been Estate Road. A second development (37-51 Parkhaven Stream earthworks are apparent (residential constructed trending north through 43 drive), has occurred just north of the highway services. redevelopment). Hingaia Road, just west of the The highway services remain in the same interchange. Some additional buildings configuration. The properties at 24-60 Mercer Street remain in have been constructed within the New a similar configuration, earthworks are apparent Significant residential development has occurred Zealand Bloodstock (10 Hinau Road). to the south adjacent to Great South Road. fronting onto, and east of the highway, south of BP Ponds have been constructed 100m services to Otūwairoa (Slippery Creek) (Kilmacrennan East – The properties within the Drury industrial west of the highway in 72 Hinau Road, Drive), an attenuation pond has been built at 589R estate, off Creek St and Norrie Rd, remain in a the lot south of 10 Hinau Road. These Great South Road (Hulls Reserve) 20m from the similar configuration. Numerous relocatable may be storm water retention ponds highway. associated with the highway.

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East – Additional residential Drury industrial estate remains broadly in the same houses are present within 301 Great South development has been constructed at configuration. Additional buildings are apparent at 5 Road. Dumas Place has adjacent to the Creek St, storage at 15-19 Creek St is containers and Storage is no longer occurring on the former highway and the interchange. A park is aggregate (rather than wood), the buildings at 23-31 sidings lot, off Flanagan St. A new building has shown at 59/63 Chichester Drive. have been demolished and replaced with commercial been constructed at 190 Flanagan Road. warehouse style buildings.

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APPENDIX B – DRAFT CONTAMINATION SITE MANAGEMENT PLAN Document Name Draft Contamination Site Management Plan, Stage 1B1 Papakura to Bombay Document Code 506207-0490-REP-KF-0078 Document Control

Rev No Date Description Author Reviewer Verifier Approver

A 03/07/2020 Draft for client review Rebecca Colvin Tim Dee Helen Davies -

B 23/03/2021 Final for client review Sarah Ensoll - Richard Griffiths Jon Hind

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KEY CONTACTS

KEY CONTACT PERSON CONTACT DETAILS

WAKA KOTAHI TBC TBC

NOTES TO CONTRACTOR SITE SUMMARY PRINCIPAL CONTRACTOR TBC TBC ADDRESS: PAPAKURA INTERCHANGE UP TO AND INCLUDING DRURY INTERCHANGE KEY RISKS SQEP TBC TBC PROPOSED WORKS: ROAD UPGRADES ◼ LANDFILLING (KARAKA RESERVE) SITE MANAGER TBC TBC SITE USE / HISTORY: RURAL FARMLAND, PASTURES, HORTICULTURE, INDUSTRIAL ◼ SIDE WATER CHANNELS / INFORMAL DRAINAGE AUCKLAND COUNCIL TBC TBC CONTAMINANTS OF POTENTIAL CONCERN: ASBESTOS, HEAVY METALS, HYDROCARBONS, ◼ CONSTRUCTION FILLING PESTICIDES, SOLVENTS WORK SAFE TBC TBC ◼ UNEXPETED CONTAMINATION − IF ENCOUNTERED WORKS MUST BE STOPPED AND ADVICE SOUGHT FROM SQEP. LEGISLATION / GUIDANCE ◼ ASBESTOS IN SOILS ALL WORKS MUST COMPLY WITH / SOILS - MAY NEED LICENSED ASBESTOS REMOVALIST MUST BE MANAGED IN ACCORDANCE WITH: TO MANAGE WORKS ◼ HEALTH AND SAFETY AT WORK ACT 2015 ◼ INCORRECT WASTE DISPOSAL OF SOIL AND ◼ EROSION AND SEDIMENT CONTROL WATER GUIDE FOR LAND DISTURBING ACTIVITIES IN THE AUCKLAND REGION (GD05)’ HEALTH AND SAFETY (SECTION 6) ◼ WORKSAFE APPROVED CODE OF THE CONTRACTOR SHOULD: PRACTICE FOR MANAGEMENT AND REMOVAL OF ASBESTOS (NOVEMBER ◼ INDUCT ALL WORKERS TO CSMP. 2016), ◼ CREATE BESPOKE HEALTH AND SAFETY PLAN ◼ BRANZ NEW ZEALAND GUIDELINES FOR ◼ ESTABLISH AN EXCLUSION ZONE AROUND THE ASSESSING AND MANAGING ASBESTOS IN WORK AREA SOIL (2017). MITIGATION CONTROLS ARE REQUIRED WHEN WORKING WITH ◼ PROVIDE SUITABLE PPE ASBESTOS IN SOILS. ◼ PROVIDE WELFARE FACILITIES PERMITS / REPORTS / CONSENTS ◼ RESTRICT SITE ACCESS REQUIRED ◼ CAPTURE WATER / SEDIMENT RUN-OFF HAZARD/ACTION ◼ MANAGE RISK FROM ANY ASBESTOS IN ACCORDANCE WITH GUIDANCE WORKS MANAGEMENT PLAN.

PERSONAL PROTECTIVE EQUIPMENT (PPE) COUNCIL RESOURCE CONSENTS HEALTH AND SAFETY PLAN AT ALL TIMES AS NECESSARY ENVIRONMENTAL MANAGEMENT (SECTION 7) SOIL & WATER TESTING (SECTION 8)

◼ ENVIRONMENTAL MANAGEMENT PLAN EYE PROTECTION CONTRACTOR SHALL MAINTAIN COMPLETE RECORD OF ALL EARTHWORKS IMPORTED FILL – CLEANFILL (GOGGLES) ◼ ◼ EROSION AND SEDIMENT CONTROL PLAN SOILS AND GROUNDWATER SHOULD BE ASSUMED TO BE CONTAMINATED. ASSESSED BY SQEP ◼ COMPLY WITH EROSION AND SEDIMENT CONTROL GUIDELINES: ◼ LABORATORY ANALYSIS APPROVAL FROM WASTE RECEIVING LONG SLEEVE HI VISIBILITY EAR DEFENDERS FACILITY CLOTHING − PROTECT WATERCOURSES / DRAINS WASTE SOIL DISPOSAL TRADE WASTE PERMIT (if required) GLOVES OVERALLS − CAPTURE WATER / SEDIMENT RUN OFF ◼ LABORATORY ANALYSIS DEWATERING PLAN (if required) − STOCKPILE MANAGEMENT / COVERING ◼ MEETS REQUIREMENTS OF RECEIVING SAFETY FOOTWEAR WITH TOE FLAME RETARDANT FACILITY AND SOLE PROTECTION. − DUST SUPRESSION ASBESTOS REMOVAL CONTROL PLAN (if OVERALLS. required) WATER DISPOSAL ◼ APPROPRIATE GROUNDWATER / STORMWATER MANAGEMENT / DISPOSAL LIGHT EYE PROTECTION TYVEK SUITS AND ◼ LABORATORY ANALYSIS AIR MONITORING PLAN (if required) (SAFETY SPECTACLES) RESPIRATORS ◼ APPROPRIATE WASTE MANAGEMENT / DISPOSAL ◼ MEETS STORMWATER REQUIREMENTS OR ASBESTOS CLEARANCE CERTIFICATE (if ◼ DECONTAMINATION OF EQUIPMENT HARD HAT ALTERNATIVE SOLUTION NECESSARY required)

1 INTRODUCTION

1.1 Papakura to Bombay Project Background This Report supports the application lodged by Waka Kotahi New Zealand Transport Agency (Waka Kotahi) under the Covid 19 Recovery (Fast Track Consenting) Act 2020 (FTA) for Stage 1B1 of the Papakura to Drury South Project, a listed project under the FTA. For clarity and by way of summary we note that:

◼ The Papakura to Drury South Project was originally part of a larger project, called the Papakura to Bombay Project.

◼ Through the FTA, part of the Papakura to Bombay Project, being the Papakura to Drury South section, was included as a listed project under that Act.

◼ Waka Kotahi has broken the listed Papakura to Drury South project into further stages, with this application relating to Stage 1B1 only. Stage 1B1 is referred to as the Project throughout this document. Further discussion of the different stages of the Papakura to Drury South Project is contained in the, Assessment of Effects on the Environment (AEE), Design and Construction Report (Appendix C to the AEE) and legal submissions supporting this application.

Figure 1-1 Approximate extents of P2B. Focus of this Report is Stage 1B1. Source: Aurecon NZ Ltd

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1.2 Stage 1B1 Papakura to Drury Interchange As referred to in the AEE the geographic location of the Project is between the Papakura Interchange to south of the Drury Interchange (Quarry Road), shown in Figure 1-1. The works will include infrastructure upgrades at the Papakura Interchange, the Drury Interchange, and replacements of the SH1 Bremner Road Overbridge and Jesmond Bridge (over Ngakoroa Stream). Additionally, it is also proposed to establish a shared use path (SUP) from the Papakura Interchange to north of the Otūwairoa Bridges, and from Bremner Road to south of the Drury Interchange. A full description of the Project works is contained in the AEE and Design and Construction Report (Appendix C to the AEE), supporting the application for resource consents and Notices of Requirement (NOR).

1.3 Purpose of CSMP Aurecon has been engaged by the Transport Agency to prepare a draft Contaminated Site Management Plan (CSMP). The CSMP is required to direct methods associated with soil and water disturbance as a result of the proposed upgrades to SH1 Motorway, specifically the Project. This CSMP will primarily be used as supporting documentation in resource consent applications associated with this project to demonstrate at a high level that risks can be managed to avoid adverse effects. A final CSMP revised with the contractor’s terms will be required prior to commencement of the works. The final CSMP shall be prepared with far more specific guidance pending results of any further investigations and on confirmation of layout, design and contractor methodology by the SQEP. Currently available development plans are included in Attachment 1 Roles and Responsibilities. This report has been prepared with reference to the Ministry for the Environment’s Contaminated Land Management Guidelines No. 1: Reporting on Contaminated Sites in New Zealand (2016 Revised Draft). The purpose of this CSMP is to identify a contamination management methodology which would mitigate the effects of the proposed activity to as low as reasonably practicable. In addition, this methodology should help to identify potential risks to human health and the environment associated with soil and groundwater contamination disturbed by the project works. This report informs the earthworks contractor of the requirements for the management of contaminated materials. It does not describe all issues required to manage earthworks effectively, and it is intended that this plan be incorporated into a relevant works management plan by the Principal Contractor. The CSMP is intended to provide for the management of soil and water during the work. The CSMP covers the following:

◼ Summary of proposed works, areas of affected materials and objectives (Section 2 and 3).

◼ Contact information and summary of specified roles for Client, Consultant and Contractors engaged to work on this project (Section 4).

◼ Site management procedures (Section 5).

◼ Protocols for unexpected contamination discovery (Section 6).

◼ Health and safety hazards (Section 7).

◼ Environmental management procedures (Section 8).

◼ Testing requirements for imported fill and waste disposal. (Section 9).

◼ On-going monitoring and management should this be required. This plan should be used to inform the site risk assessment register at the site and should be updated through the life of the project to reflect site conditions. This plan is restricted to the management of contaminated, or potentially contaminated soil, and should not be used to replace other site management processes that will need to be in place during the construction phase of the project.

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1.4 Previous Contamination Assessments Three contamination assessments have been completed for the project. Additional detail of the potential extent and nature of contamination is identified in these reports and this report should be read in conjunction with that information if a robust understanding of the contamination status of the project area is required: ◼ Aecom, December 2017, Preliminary Site Investigation, Southern Corridor, State Highway 1 Papakura to Bombay Widening, Reference: 60545688. ◼ Aurecon, December 2019, Preliminary Site Investigation, Stage 1 Papakura to Bombay, Reference: 506207-0310- REP-KF-0035. ◼ Aurecon, March 2020, Detailed Site Investigation, Stage 1 Papakura to Bombay, Reference: 506207-0310-REP- KF-0042. This report relies on the information provided within the above documents.

1.5 CSMP Implementation This CSMP has been prepared based on the findings of the contamination assessments, along with the proposed project earthworks, to address the potential impact of the earthworks on human health and the environment. The CSMP should be implemented during earthworks in locations identified on Table 3-1, or in locations where unexpected contamination is identified. Further DSI is recommended. Use of this version of the CSMP for construction is not recommended, pending confirmation of any further investigations, design layout and contractor methodology.

1.6 Explanatory Statement

1.6.1 Review Scope and Use ◼ This report has been prepared by Aurecon for the Transport Agency exclusively for its use. It has been prepared in accordance with our scope of services, the instructions given by or on behalf of the Transport Agency and is for the purpose outlined in Section 1.3 of this report only.

1.6.2 Limits on Investigation and Information ◼ A complete detailed site investigation (DSI) has not yet been completed on the HAIL areas to be disturbed. Sources of potential contamination has been identified during the Preliminary Site Investigation. Contamination is anticipated in those areas and as such use of the ‘unexpected contamination’ section of this report does not apply. ◼ Only a limited amount of information has been collected and this report does not purport to completely describe all the site characteristics, properties and hazards. The nature and continuity of the ground between locations has been inferred using experience and judgment and it must be appreciated that actual conditions could vary from the assumed conditions. Should further information become available regarding the conditions in the site, including previously unknown likely sources of contamination, Aurecon reserves the right to review this plan in the context of the additional information. ◼ This report makes various assumptions from the data collected, and while providing a framework for managing the contamination hazards, it only presents a summary of identified hazards and mitigation measures relevant to the expected site conditions. Aurecon accepts no responsibility for any deviations from the plan which may result in harm to the site workers, damage to the environment or breaches of consent. ◼ The report is also based on information provided to Aurecon by the Transport Agency and other parties. It is provided strictly on the basis that the information that has been provided is accurate, complete and adequate. Aurecon takes no responsibility and disclaims all liability whatsoever for any loss or damage that the Transport

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Agency or any other party may suffer resulting from any conclusions based on information provided to Aurecon, except to the extent that Aurecon expressly indicates in the report that it has verified the information to its satisfaction.

2 PROJECT BACKGROUND

2.1 Proposed Development and Design The proposed upgrades are expected to involve ground disturbance through the following activities; earthworks associated with widening, construction of the shared use path, retaining walls, ground improvements, piling (SH1 Bremner Road Overbridge, Drury Interchange, Jesmond Bridge), and stormwater upgrades. Embankment fills using imported engineered hardfill and cut slopes into Tauranga Group deposits are planned for both the northern and southern alignment widening works. Earthworks will comprise cut and fill slopes, and embankment fill to form the carriageway. The areas requiring the most cut are between Papakura interchange and Otūwairoa (Slippery Creek). Indicative cut and fill volumes are provided in the Specimen Design. Earthworks are minor overall compared to other similar sized roading projects within New Zealand. Most of the earthworks comprises filling, rather than cutting. However, filling requires a nominal amount of cut. The following areas have been identified as those likely to require the most cut; a) Areas of proposed stormwater upgrades, specifically swales and retention areas. Three wetlands are proposed; within 31 Bremner Road, between CH 14080-14140 NB, and CH 14260-14300 NB. b) Proposed shared use path. c) Retaining walls. d) Ground improvement and piling at Drury interchange. e) Utilities upgrades and relocation It is anticipated that in areas of fill that there will be cut to remove surficial material / material that is geotechnically unsuitable prior to filling.

3 SUMMARY OF POTENTIAL HAZARDS This CSMP is informed by the findings of the reports listed in Section 1.4. DSI has only been completed within the highway designation between CH 9000 to 14000 and was not completed for Drury Interchange. The PSI identified several potential source areas of concern within potential soil disturbance areas. For further detail refer to the PSI.

3.1 North of Drury Interchange The DSI was designed to provide information on the geological and hydrogeological conditions as well as to target suspected source areas as identified in the PSI. The DSI comprised 27 hand augers to a maximum depth of 5 m and 42 boreholes to a maximum depth of 49.6 m. The priority source areas targeted included; side water channels where road run off collects, areas of filling within the road corridor, and the influence of BP Service centre, Drury industrial estate and filling associated with Drury sports field on the ground conditions within the highway corridor. Six groundwater samples and 119 soil samples were collected and analysed for contaminants of concern across the study area. A risk assessment was completed, and the following was identified:

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◼ Environmental:

− Groundwater samples collected from piezometers screened within Tauranga Group or Kaawa Formation reported results below ANZECC Guideline 95% freshwater assessment criteria. − Results from one groundwater grab sample screened within fill reported concentrations above ANZECC 80% freshwater assessment criteria. If dewatering occurs it is considered that these perched pockets of water are the most likely to be intercepted. − Auckland Unitary Plan permitted activity criteria (AUP PA) were exceeded for lead and zinc in surficial fill in three locations (BH137, HA127 and HA128) located within the road reserve and are likely attributed to road run-off.

− Background concentrations for heavy metals (predominantly lead and/or arsenic) were exceeded in a third of fill samples (34 of 104). This is considered likely attributed to road run-off. These soils will not be suitable for disposal as Cleanfill.

3.2 Drury Interchange DSI has not been completed for Drury Interchange. The PSI identified HAIL activities within properties which are to be disturbed by the proposed eastern-offline design alignment for Drury Interchange as shown in General Arrangement Drawings (ref: 506207-0420-DRG-RR-0100-0164-A). These include 10R Karaka Road (Karaka Reserve) which is considered to be HAIL G5 due to historical filling, and 190 Flanagan Road is considered to be HAIL A10 and D5 due to the presence of an orchard and workshop. In addition to the above, side water channels, filling and overhead electricity pylons within the road corridor are considered to be sources of contamination. Other HAIL activities have been identified in properties adjacent to the highway (e.g. 10 Hinau Road, 115 Park Estate Road, 145 Park Estate Road, 20 Victoria Street, 30 Mercer Street or 68 Pitt Road) however it is currently not known if these will be disturbed by the proposed works. Where DSI has not been completed it is recommended to be undertaken where earthworks are proposed within identified source areas. DSI will determine actual site conditions within areas of potential contamination and better understand the risk profile. DSI should be prioritised in the following locations:

◼ Karaka Reserve associated with waste disposal to land or formal landfilling.

◼ 190 Flanagan Road associated with an engineering workshop.

◼ Where HAIL activities or source areas have been identified and earthworks are proposed. This CSMP should be updated if further investigation is completed. Conservative management controls are detailed in Section 5.3, should a DSI not occur at Drury Interchange these must be implemented.

3.3 Summary of Project Hazard Interactions The potential interaction between proposed construction activities, contamination sources and relevant contaminants of potential concern (COPC) within the study area are summarized in within Table 3-1. Further investigation is recommended in the areas of proposed areas of earthworks.

Table 3-1 Summary of Project Hazard Interactions within the Project Area

Location / Chainage Source Activity HAIL Activity / Relevant COPC Construction AUP E30 Activity Consideration

Source areas within the road designation and proposed areas of earthworks

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10R Karaka Road - Filling with unknown G5 (HAIL) and AUP Heavy metals, Widening of the Karaka Reserve material / waste E30 hydrocarbons carriageway including disposal to land (including PAH), embankments, Drury ACM, PASS/ASS interchange upgrades, stormwater upgrades, utilities upgrades, retaining walls, As above

190 Flanagan Road Engineering D5 (HAIL) and AUP Hydrocarbons heavy As above workshops E30 metals, VOCs, SVOCs,

SH1 designation NB & Filling for highway AUP E30 Hydrocarbons As above SB – Drury Interchange construction (including PAHs), CH14000-14900 heavy metals, PASS/ASS

SH1 designation NB & Side water channels AUP E30 Hydrocarbons SB - CH14000-14900 (including PAHs), (Drury Interchange), CH heavy metals, 10100 SB – 107500 SB PASS/ASS

SH1 designation - CH Metallic paints AUP E30 Heavy metals, notably As above 13960 SB (pylons) zinc, copper and lead

31 Bremner Road Vehicle storage HAIL F4 Hydrocarbons heavy As above metals, VOCs, SVOCs,

115 Park Estate Road Bulk storage or use of A10 (HAIL) and Heavy metals, SUP, Drury (CH 11040-11100 NB), pesticides AUP E30 organochlorine interchange upgrades 190 Flanagan Road pesticides (OCPs)

18- 20 Victoria Street Filling with unknown A10 (HAIL) and Heavy metals, SUP material / waste AUP E30 hydrocarbons disposal to land (including PAH), ACM,

Source areas identified adjacent to the road designation and proposed areas of earthworks (to be reviewed and removed as appropriate by implementation phase SQEP once earthworks are confirmed)

20 Firth Street Corrosives including A4 (HAIL) and AUP Heavy metals, Within 50m of the formulation or bulk E30 sulphate activities; widening of storage the carriageway including embankments, stormwater upgrades, Drury interchange upgrades,

20 Firth Street, 60 Bulk storage or use of A10 (HAIL) and Heavy metals, OCPs As above Mercer Street, 190 pesticides AUP E30 Flanagan Road, 68 Pitt Road

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10 Firth Street, 301-305 Deteriorated historical E1 (HAIL) Asbestos containing As above Great South Road construction materials materials (ACM), and (asbestos) lead

30 Mercer Street Motor vehicle F4 (HAIL) and AUP Hydrocarbons As above workshops E30 (including PAHs), VOC, and heavy metals

30 Mercer Street Drum or tank G2 (HAIL) and AUP Heavy metals, As above reconditioning or E30 hydrocarbons recycling (including PAH), VOC,

4 ROLES AND CONTACT INFORMATION This draft CSMP should be provided to the Principal Contractor for contact information in Table 4-1 to be completed. Further clarity on the roles is provided in Attachment 2 Soil Classification. Upon completion of Table 4-1 this CSMP should be finalised and reissued. All employees engaged in field activities and under the direct control of the Principal Contractor shall comply with the requirements of this plan. Roles assigned to key project personnel are identified in Attachment 2 Soil Classification. Table 4-1 Roles and Responsibilities

Tasks Organisation / Role Name Email Phone

Distribution of this plan to the The Client TBD lead contractor & ensuring compliance with the plan Waka Kotahi

Updating CSMP Environmental Consultant TBD (Suitably Qualified and Providing guidance for Experienced Practitioner unexpected discoveries (SQEP)) Monitoring of Drury Interchange engineering controls Make recommendation to stop work should it be appropriate Site Validation Report and on- going Monitoring and Management Plan Site Closure Report

Implementation of CSMP Principal Contractor TBD

Site Manager TBD

Earthworks Contractor TBD

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Review of draft CSMP Earthworks Environmental TBD Manager Production of site specific erosion and sediment control plan

The Client, Principal Consultant and Principal Contractor are jointly responsible for ensuring all necessary consents have been obtained. It is the Principal Contractor’s responsibility to ensure that all consent conditions are complied with, as well as abiding by all laws, and the contract documents.

5 SITE MANAGEMENT PROCEDURES This section presents generic controls to address contamination issues which may be encountered during planned earthworks at the site. Waste disposal options and testing requirements are detailed in Section 9.

5.1 Excavation Management Prior to commencing earthworks, the following should be conducted:

◼ Confirm that all necessary authorisations and consents have been obtained.

◼ Establish exclusion zones around excavation areas, clearly delineating, isolating and securing these areas as required. The location of these areas will be established by the Contractor and visibly displayed within the work area.

◼ Implementing measures for transporting and disposing of soil where necessary.

◼ Preparation of a works management plan, including this CSMP. This plan will involve inclusion of supporting documents, such as (and not limited to): − Erosion and sediment control plan. − Health and safety plan. − Environmental management plan. − Asbestos management plan (if required). − Dewatering plan (if required).

5.2 Site Record Keeping and Monitoring Requirements Records which should be kept on site during the project works include the following:

◼ Weather conditions each day and whether any actions are required to address weather conditions.

◼ Site conditions.

◼ Condition and replacement of erosion and sediment control measures.

◼ Progress / problems associated with the site work.

◼ Numbers of personnel on site and use of personal protective equipment.

◼ Monitoring data including stockpiles and movement of soil within the site.

◼ Record of sampling undertaken and laboratory results.

◼ Photographs as appropriate.

◼ Any requirements for analysis of soil or water samples for disposal acceptance purposes.

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◼ Safety, health and environmental discussions and safety non-compliance issues.

◼ Third party complaints lodged regarding the works, as well as all corrective measures implemented to limit such complaints from reoccurring.

◼ Waste disposal dockets of all soil and water transported off site.

◼ Information of the source site / sample results from any imported clean material.

◼ All incidents and near misses.

◼ Any other relevant information.

5.3 Drury Interchange

5.3.1 Implementation phase In the absence of a DSI to identify actual site conditions within the areas identified in Section 3.2 (Karaka Reserve, 190 Flanagan Road and any other HAIL activities that have not been investigated), the following additional controls / procedures are recommended: It is recommended that full time SQEP supervision is allowed for during the implementation phase in this area.

5.3.1.1 Improved Erosion and Sediment Control Measures Any areas that are significantly contaminated must have contamination specific and independent sediment and erosion control measures, above those detailed in Section 8. These may include covering areas of exposed soils with sheeting and tarpaulins, having areas that require additional bunding, and suspending or limiting works during periods of wet weather. If significant waste is identified within Karaka Reserve the construction of a physical impermeable barrier such as a sheet pile wall may be necessary to allow for the protection of the Hingaia Stream during construction works.

5.3.1.2 Gas Protection Measures Gas monitoring and protection measures may need to be implemented during construction works where trenching is being undertaken or enclosed spaces are created and accessed. This may include personal or site gas monitors. Should significant gas risk be identified, for example putrescible wastes then no ignition sources will be permitted within the works area.

5.3.1.3 Dust Control Any areas that are significantly contaminated must have specific and independent dust and odour control measures, above those detailed in Section 8. These may include:

◼ Suspending or limiting excavation, stockpiling and transport of soils during periods of high wind.

◼ Using water on exposed soils to suppress dust / odour, while ensuring that any water run-off is minimised as far as possible and appropriately controlled. Water is not to be used on soils contaminated with non-soluble compounds such as hydrocarbon fuels.

◼ Covering areas of exposed soil with sheeting / tarpaulins.

◼ Ensuring trucks transporting material from the site are covered and that vehicles are adequately cleaned.

◼ Daily quantitative monitoring of dust generation.

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5.3.2 Operational effects

5.3.2.1 Karaka Reserve If landfilling activities are confirmed within Karaka Reserve, the landfill should be capped and graded for the expected long-term land use. As per MfE, 2001 A Guide for the Management of Closing and Closed Landfills in New Zealand, the recommended final cap from top to bottom should consist of:

◼ 150 mm topsoil layer for vegetation.

◼ 600 mm compacted barrier layer (silt, silty clay, clay k ≤ 1 x 10-7 m/s).

◼ 300 mm compacted subgrade or foundation layer. The 300 mm subgrade layer can be an intermediate cover placed immediately after the landfill cell reaches its final grades. It can be a cleanfill layer consisting of appropriately graded (less than 50 mm) demolition concrete chunks, bricks, or inert natural material. The function of the subgrade layer is to cover the waste and provide a uniform surface for placing the barrier layer, followed by the topsoil layer. The barrier layer restricts the amount of infiltration into the underlying waste. After rainfall, infiltrated water is partially stored in this layer. The topsoil layer is used to support vegetation growth. In regions where vegetation cannot be maintained or sustained materials can be selected to minimise erosion and allow for surface drainage (for example, cobbles, gravel or stones). In some situations, thicker layers may be required and/or a subsoil layer provided between the barrier and topsoil layers.

6 UNEXPECTED CONTAMINATION DISCOVERY PROTOCOL

6.1 Overview This procedure shall be followed in the event of the discovery of any unexpected contamination including drums/tanks during the earthworks. The procedures outlined below provide the Contractor with protocols to address unforeseen contamination and take appropriate action to avoid the dispersion of potential contaminants into the surrounding environment. Archaeological discoveries are not covered in this report.

6.2 Contact Information Table 6-1 Emergency Contact Information

Contact Email Phone

Auckland Council – Compliance Officer 09 354 8700

Auckland Council Pollution Response Hotline 09 377 3107

WorkSafe NZ [email protected] 0800 030 040

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National Poisons Centre https://poisons.co.nz/ 0800 764 766

6.3 Contamination Indicators Contamination discoveries include the presence of discoloured surface water (including sheens or slicks), unusual odours, gas bubbles in pooled surface water, oily substances, intact or broken drums/containers, or fibrous materials such as fibre cement which may contain asbestos. These discoveries differ significantly from the expected ground conditions such that additional management, as described in this section, is required.

6.4 Process During earthworks on the site, the Contractor shall actively monitor ground conditions for the conditions / materials specified above. If newly discovered contaminated material is encountered, earthworks and dewatering (if occurring) must stop in the area (typically within 10 m of the discovery). The material must remain in situ until a SQEP has had the opportunity to assess and test the material, and to provide advice on how to proceed. The SQEP shall:

◼ Notify the regulatory authority/authorities, if required.

◼ Characterise the contaminated material by collecting samples for laboratory analysis (by a SQEP, and if required).

◼ If appropriate, advise the contractor to excavate the suspected contaminated material into a covered and contained receptacle to allow works to continue with minimum delay.

◼ When the material or water characteristics have been established by a SQEP, they will advise the site supervisor as to whether the: − Materials may remain on site or be directly loaded into trucks for disposal at an appropriately licensed waste facility.

− Water may be discharged with or without additional treatment, or whether any site dewatering from the excavation should be collected for disposal at a wastewater facility licensed to receive the water. − Disposal of material must be to a facility licensed to accept such material and approval shall be obtained by the Contractor prior to transportation. The landfill operator may require further testing before accepting materials, in accordance with the landfill’s resource consent. The contractor shall:

◼ Ensure trucks have their loads covered with tarpaulins before leaving the site.

◼ Instruct relevant staff so that all appropriate information such as location and quantity of material and off-site weighbridge dockets are recorded. All weighbridge documents for any material removed shall be retained by the Contractor for inclusion in the site validation report.

◼ Record all details of unexpected contamination and hazardous materials discovery on an incident form, including GPS of location.

◼ If unsuitable for discharge, disposal of contaminated water must be to a wastewater facility licensed to accept such water and approval shall be obtained by the Contractor prior to transportation. The wastewater operator may require further testing before accepting wastewater, in accordance with the wastewater facilities resource consent.

◼ Should suspected asbestos be observed during the earthworks, all work shall cease, pending inspection and confirmatory analysis by a specialist trained to be able to identify and sample asbestos in soils in a safe manner. In the event that asbestos is proven to be present then this will be managed in accordance with an addendum to this plan.

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7 HEALTH AND SAFETY HAZARDS

7.1 Input into Site Health and Safety Plan As required by the Health and Safety at Work Act 2015, a comprehensive health and safety plan addressing all site risks, including those related to contaminated soil and water, will be developed by the Contractor prior to commencement of works. The known or potential hazards related to the management of contaminated land and soil, include the following:

◼ Inhalation of (asbestos) contaminated dust.

◼ Inhalation of vapours.

◼ Direct contact with soils contaminated by contaminants of concern.

◼ Ingestion of contaminated soil. The known or assumed contaminants of primary concern include the following:

◼ Asbestos.

◼ Metals.

◼ Hydrocarbons (including polyaromatic hydrocarbons and benzene, toluene, xylene and ethylene).

◼ Pesticides.

◼ Solvents.

7.2 Asbestos in Soil If asbestos containing materials are discovered during the works, or asbestos is detected in laboratory analysis of soil samples, the works shall be completed in accordance with WorkSafe Approved Code of Practice for Management and Removal of Asbestos (November 2016), Health and Safety at Work (Asbestos) Regulations 2016, and BRANZ New Zealand Guidelines for Assessing and Managing Asbestos in Soil (2017). The contractor shall give effect to these codes, regulations and guidelines when developing and/or updating the project health and safety plan, and when developing management plans for disturbance, removal, and disposal/treatment of asbestos containing materials.

8 ENVIRONMENTAL MANAGEMENT PROCEDURES

8.1 Introduction This section provides guidance on the site-specific measures required to protect the environment during activities on the site that disturb contaminated soils or groundwater. An Erosion and Sediment Control Plan has been produced by Aurecon and describes indicative erosion and control (ESC) methodology for the project (Aurecon, 2020, Erosion and Sediment Control Plan, reference: 506207-0490- REP-NN-0060). Works will need to be completed in accordance with this. A finalised, Site-Specific Erosion and Sediment Control Plan (SSESCP) plan will also be required to be developed by the contractor once the specific arrangements on site layout have been determined. The contractor shall ensure that the works are carried out in such a manner to manage adverse effects on the environment, and the normal operation of the business and life of others. The contractor shall ensure that all materials and equipment removed from the site are stored, handled and/or disposed of legally and responsibly. This section describes at a high level, what needs to be covered in an Environmental Management Plan.

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8.2 Erosion and Sediment Controls Erosion and sediment control methods shall be as described in the project ESC plan (reference: 506207-0490-REP- NN-0060), and the finalised SSESCP which should be developed. All earthworks will be completed in accordance with guidelines in:

◼ Auckland Council’s ‘Erosion and Sediment Control Guide for Land Disturbing Activities in the Auckland Region (GD05)’. Priority is to be given to protection of adjacent watercourses and storm water drains.

8.3 Stockpiling Stockpiling of contaminated / odorous soil should be avoided when practicable. When soils are to be temporarily stockpiled for staging prior to off-site disposal, the location of temporary stockpiling must be defined in a specific erosion and sediment control plan. If temporary stockpiling is required, the following controls should be implemented:

◼ Heavy duty plastic, such as high-density polyethylene (HDPE), will be placed on any unsealed surface in a designated area prior to placing stockpiled material in that area.

◼ Soil stockpiles will be kept clean and tidy, no more than 4 m in height and with a compacted stable slope.

◼ Stockpiles will not be placed within 20 m of the coast or waterways (including dry stream channels/ephemeral waterways and overland flow paths, if known) and vehicular movement over stockpiled soil will not be allowed.

◼ Bunds or sediment fences will be constructed or installed around the edges of the stockpile management area to prevent storm water run-off from carrying contaminated or potentially contaminated soil away from the stockpile management area. Imported fill required for backfilling excavations may be temporarily stockpiled in a designated, clean area on site. All imported fill is required to be free of contaminants.

8.4 Dust and Odour Management Dust control will be managed in accordance with the project Erosion and Sediment Control Plan (Ref: 506207-0490- REP-NN-5101 – 5164) contained in Appendix F of the AEE and the finalised SSESCPs. This includes the use of water trucks to dampen exposed soil areas and stockpiled materials if they eventuate (although stockpiles are not expected).

8.5 Groundwater Management

8.5.1 General Should groundwater and/or surface water pool within excavations, this water can be allowed to soak back to the excavation naturally. However, should volumes exceed the capacity to soak naturally and off-site disposal is required, this water will need to be tested for chemical and physical contaminants (e.g. turbidity, temperature) to determine if it is acceptable for direct disposal into the council’s stormwater reticulation network, and whether a consent may be required. For the Auckland region, if water quality results meet the ANZECC8 80% protection of species criteria (marine or freshwater, whichever is the greater), then it may be suitable for disposal to the storm water network, in accordance with guidelines around permitted activity criteria AUP Chapter E30.

8 Australian and New Zealand Guidelines for Fresh and Marine Water Quality (2000).

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Initial testing of shallow groundwater (BH139 and BH140B) suggests that perched groundwater, within fill material, may be above ANZECC 80% freshwater criteria. If compliance with Council criteria cannot be met, then the water may be discharged to trade waste with appropriate permits / asset holder approval, removed by a licensed contractor, or treated and re-tested prior to disposal into the storm water network. Records of this disposal shall be kept and maintained on site.

8.5.2 Excavation Dewatering Should excavations require dewatering, a dewatering plan including disposal arrangements will be developed, as indicated in Section 5.1.

8.6 Decontamination of Tools and Machinery A SQEP may require that hand tools and machinery used during earthworks be decontaminated prior to leaving site or leaving the exclusion zone. Wash water from decontamination of tools and machinery will be captured and disposed to a facility equipped to take the contaminated water.

9 TESTING REQUIREMENTS Soil and water to be reused or removed from the site will require testing to confirm appropriate disposal location. Further information on soil classification criteria is included in Attachment 2 Soil Classification. Unclassified soils being imported to the site may require soil sampling and analysis to prove its suitable for use. Soil sampling shall be completed in accordance with MfE Contaminated Land Management Guidelines No. 5, Site Investigation and Analysis of Soils (Revised 2011). Analysis of samples shall be undertaken at an International Accreditation New Zealand (IANZ) accredited laboratory. Environmental testing for site characterisation or validation is not detailed within this report. Testing requirements for the following are detailed below:

◼ Waste soil and water.

◼ Imported fill.

◼ Water. The Principal Contractor shall maintain a register of landfill soil disposal and liquid disposal activities and record the location of contaminated soil excavations, disposal location, quantity of contaminated material and off-site weighbridge documents.

9.1 Off-Site Disposal of Soil and Water Any excess soil should be tested in a laboratory to determine the most suitable disposal options. Laboratory analysis will enable the soils to be classified as either cleanfill, managed fill, or hazardous material (as defined by the Auckland Unitary Plan). Further details are provided in Attachment 2 Soil Classification. It is advised that the waste disposal sites or landfills are contacted for specific testing requirements, as they may have their own acceptance criteria compliant with their own resource consent. Different soil testing requirements are likely for individual locations, depending on the types of activities that occurred. Testing requirements are likely to include one or a combination of the following, and testing should be targeted to the identified HAIL / source activity:

◼ Heavy metals.

◼ Hydrocarbons (TPH, PAH, BTEX).

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◼ Volatile and Semi Volatile Organic Compounds (VOC, SVOC).

◼ Asbestos presence/ absence. Soil leachate testing (TCLP) may also be required. Where waste soil is disposed of at an off-site facility, the receiving facility must be licensed to accept such material. The waste must be documented under a waste tracking process and using waste tracking forms as appropriate. Water disposal into the stormwater reticulation network is controlled by Auckland Council and the acceptability of the quality of the water, compared to council requirements must be confirmed prior to this disposal method being used. For further information on groundwater management refer to Section 8.5. All soil and water sampling, selection of analytes and assessment of results, should be conducted by a SQEP. Analysis of samples shall be undertaken at an IANZ accredited laboratory.

9.1.1 Soil Testing Completed to Date Soil testing was completed as part of the DSI. Note this testing was limited to the road reserve:

◼ Shallow surficial fill (<0.2m) samples collected from the road reserve generally exceeded background concentrations for heavy metals, which is likely attributed to road run-off. As these soils have concentrations above background, they are unlikely to be being suitable for Cleanfill disposal. − Ground investigation was not undertaken within the highway median. The top 0.5 m (at a minimum) of this material should be stockpiled separately during site preparation earthworks and tested prior to disposal to determine the most suitable disposal option.

◼ Deeper fills are generally reworked natural material, and background values have not been consistently exceeded, therefore these soils may be accepted as Cleanfill.

◼ Natural soils (>0.2m) are of volcanic and non-volcanic origin and background values have not been consistently exceeded, therefore these soils may be accepted as Cleanfill.

◼ In areas requiring further investigation (refer to Section 3), soils may need to be disposed of as managed or hazardous material, depending on the acceptance criteria of the receiving facility. TCLP testing was completed on BH137_0.0-0.15, HA127_0.0-0.15 and HA128_0.0-0.1 for lead and zinc, and the results were below Class A landfill criteria. Laboratory results are included in Appendix E-G of the DSI report. The above presented information is based on ground investigation data collected to date. Targeted investigation of the above soil types during the construction phase will yield more certainty and confirm disposal requirements.

9.2 Material Re-use Where site won material is to be reused as surficial soils on site it may need to be tested to confirm suitability for use. Advice should be sought from a SQEP to determine testing requirements.

9.3 Sampling and Classification of Imported Fill to Site Soil imported directly from quarries (virgin excavated natural material) does not require testing. Any imported fill material acquired from an alternative source should be assessed by a SQEP to determine its appropriateness for use on the site and to identify any potential discharge consent requirements. Where no analytical data exists, the SQEP may require sampling and testing, especially if the material is sourced from a suspected site containing elevated concentrations of contaminants. Testing shall as a minimum include:

◼ Total organic content.

◼ Heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb, Zn).

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◼ Semi-volatile organic compounds suite (SVOC).

◼ Asbestos presence/ absence.

◼ Total petroleum hydrocarbons (TPH). Testing of materials with a major component (i.e. 50% or more by mass) with a particle size greater than 2 mm may differ from that prescribed above, and will be determined by the SQEP. Analysis of samples shall be undertaken at an IANZ accredited laboratory.

DRAFT CSMP ATTACHMENTS

Attachment 1 Roles and Responsibilities Table 0-1 summarises the recommended roles and assumed responsibilities for the management of contaminated or potentially contaminated soil during site works. The appointed contractor may wish to appoint sub-consultants or contractors to assume certain responsibilities on their behalf. The roles and responsibilities are suggested only but shall be finalised as part of the final CSMP. All identified roles should include clear lines of communication between all key project stakeholders.

Table 0-1 Roles and Responsibilities

Role Responsibility

The Client The Client is responsible for appointing the Principal Contractor and the Principal Consultant. The Client may elect to appoint a project manager to represent their interests in addition to these parties.

Principal The Principal Consultant is responsible for observing the works to provide reassurance that they are Consultant being carried out in accordance with the proposed design and that any variations to the design are documented and fit for purpose. The Principal Consultant is responsible for advising on the need for and reasonableness of any changes to the contract for the works. The Principal Consultant recommends an Environmental Consultant to deliver specialist services related to contaminated land within the CSMP.

Environmenta The Environmental Consultant and their nominated Suitably Qualified Experienced Practitioner l Consultant (SQEP) will be responsible for activities associated with inspection and/or sampling of soil, such as: (Suitably ■ Identifying areas of potential soil contamination; and Qualified Environmenta ■ Review of soil data and provision of advice with respect to appropriate management and/or off- l Practitioner) site disposal of material. The SQEP will be available to provide on-going environmental advice and support to the Earthworks Contractor as needed. Where necessary, the SQEP (with the Site Manager) will be responsible for on-going liaison with regulatory authorities and the community in relation to environmental issues. The role of SQEP is determined by the Ministry for the Environment (MfE) but limits responsibility about the definition of this role. The determination as to who may qualify as a SQEP has more recently been defined by WasteMINZ9. The minimum requirements of a SQEP suitable for performing this role as interpreted by WasteMINZ is the following:

■ Tertiary science or engineering qualification relevant to environmental assessment that required the equivalent of at least three years’ full-time study;

■ Three years contaminated land assessment experience in the last five years;

9 http://www.wasteminz.org.nz/wp-content/uploads/SQEP-Accreditation-Draft-Table-May-2013.pdf

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■ Ten years’ relevant post graduate environmental experience;

■ Continuing professional development 40 hours per year contaminated site related;

■ Peer recognition: three SQEP references as to suitability and relevance of qualification and experience; and

■ Committed to operate in accordance with a code of ethics for environmental practitioners.

Principal The Principal Contractor for the project is ultimately responsible for the overall compliance with Contractor prescribed legislation and guidelines relevant to the project. This is the company who hold the contract to complete the physical works. The Principal Contractor is responsible for finalising the CSMP and submitting it for certification by relevant legislative authorities.

Site Manager The Site Manager will ensure that the appointed Earthworks Contractor (Principal) is prepared to implement environmental protection programmes, appropriate to their activities, and to cooperate in any environmental management plans implemented on the Project.

The Site Manager will be the main contact and conduit for ongoing liaison between regulatory authorities. Advice from the Earthworks Contractor may be sought as required. The Site Manager is responsible for ensuring that the works are completed in accordance with the contract.

Earthworks The Earthworks Contractor will report directly to the Site Manager and will be responsible for Contractor implementing the plan with assistance and direction from the Site Manager or the Principal Consultant. The Earthworks Contractor nominates an Earthworks Environmental Manager. The Earthworks Contractor has responsibility to ensure activities under their direct control are completed in compliance with this plan and related Work Procedures, Inspection Plans, Procedural Checklists, and Environmental Management Plans, as applicable.

Earthworks The responsibility for day-to-day site management lies with the Earthworks Environmental Manager. Environmenta The manager will be assisted by the nominated SQEP as necessary. l Manager The Earthworks Environmental Manager is responsible for ensuring that all employees and earthworks subcontractors are fully cognisant of, and abide by, this plan. The Earthworks Environmental Manager will ensure all employees and subcontractors put into practice this plan and shall ensure that the factors that may compromise the achievement of overall project or environmental objectives are brought to the attention of the Site Manager and the SQEP. The Earthworks Environmental Manager will:

■ Be responsible for ensuring employee and Earthworks Contractor adherence to this plan;

■ Maintain the content and implementation of induction training and tool box sessions;

■ Keep records of who has been inducted;

■ Be responsible for reporting all incidents in breach of this plan to the Site Manager and SQEP;

■ Maintain a log of earthworks operations and associated management and/or off-site disposal of material;

■ Periodically inspect pollution management features and equipment to confirm availability and completeness; and The Earthworks Environmental Manager and SQEP shall, in conjunction, be responsible for the following:

■ Inspection of excavations to determine extent of earthworks;

■ Identification of access controlled work areas; and

■ Review and management of imported materials and/or waste materials.

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Attachment 2 Soil Classification A contaminated site is a site where hazardous substances occur at a level which could cause an immediate or long- term hazard to human health and/or the environment. With regard to soil, there are four basic categories:

◼ Contamination is present above human health guideline values or contaminant standards.

◼ Contamination is present above ecological guideline values.

◼ Possible contamination is present above guideline values or contaminant standards.

◼ No contamination is present above guideline values. According to the Auckland Unitary Plan are three categories of soil classification: Clean fill, Managed fill, and Landfill (defined in Table 0-2 below). Site soils should be managed in accordance with their known or suspected level of contamination to mitigate any risks posed to the environment or human health.

Table 0-2 Soil Classification

Classification Definition

Clean Fill Defined by Technical Guidelines for Disposal to Land (2018): Material (Class Virgin excavated natural materials (VENM) such as clay, soil and rock that are free of: 5 landfill) ◼ Combustive, putrescible, degradable, or leachable components;

◼ Hazardous substances or materials (such as municipal solid waste) likely to create leachate by means of biological breakdown;

◼ Products or materials derived from hazardous waste treatment, stabilisation or disposal practices;

◼ Materials such as medical and veterinary waste, asbestos, or radioactive substances that may present a risk to human health if excavated;

◼ Contaminated soil and other contaminated materials;

◼ Liquid waste. The AUP goes further defining ‘cleanfill’ material as: Natural material such as clay, gravel, sand, soil and rock which has been excavated or quarried from areas that are not contaminated with manufactured chemicals or chemical residues as a result of industrial, commercial, mining or agricultural activities. Excludes:

■ Hazardous substances and material (such as municipal solid waste) likely to create leachate by means of biological breakdown;

■ Product and materials derived from hazardous waste treatment, stabilisation and disposal practices;

■ Materials such as medical and veterinary waste, asbestos, and radioactive substances; ■ Soil and fill material which contain any trace element specified in Table E30.6.1.4.2 at a concentration greater than the background concentration in Auckland soils specified; ■ Sulfidic ores and soils; ■ Combustible components; ■ More than 5% by volume of inert manufactured materials (e.g. concrete, brick, tiles); and ■ More than 2% by volume of attached biodegradable material (e.g. vegetation).” In simpler terms, cleanfill includes materials such as uncontaminated soils, cured asphalt, bricks, unreinforced concrete, fibre cement building products (excluding asbestos) and glass. Non-cleanfill materials would include soils with analytical results showing detectable hydrocarbon compounds and/or exceedance of regional background concentrations of metals, asphalt (new), green waste and household refuse. Waste soil meeting cleanfill criteria and requiring removal from site is able to be disposed of in a landfill permitted for acceptance of cleanfill.

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Managed Fills The AUP defines managed fill as the deposit of clean fill material, contaminated clay, soil, rock and (Class 2, 3 and other inert materials that may have contaminants that exceed background concentrations. 4 landfill) ◼ Soil containing metal contaminants above regional background concentrations.

◼ Soil containing detectable concentrations of hydrocarbon compounds. ◼ Soil containing contaminants of concern above ecological risk based guideline values. Soil that does not contain hazardous substances or materials in the form of household and industrial waste, organic waste or asbestos containing material.

Landfills (Class Landfills involve the disposal of material not suitable for diversion or clean fills and managed fills. 1 landfill) ◼ Hazardous materials in the form of household and industrial waste, organic waste or asbestos containing material. Soil with contamination present above Tier 1 assessment values.

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APPENDIX C – ASSESSMENT REQUIREMENTS AND METHODOLOGY This Appendix describes in more detail the research and observations undertaken with respect to contaminated land in the Project area. This Appendix supports the assessment of contaminated land and the potential effects arising from the Project that may result in short-term construction/demolition phase risk (506207-0490-REP-KF-0066 Contaminated Land Assessment).

1 ASSESSMENT REQUIREMENTS Contaminated land is reported in New Zealand following a methodology outlined in the Ministry for the Environment (MfE) Contaminated Land Management Guidelines (CLMG) No 1 Reporting on Contaminated Sites in New Zealand (MfE 2011). Assessments consistent with the CLMG are required to support Resource Consent Applications under the Resource Management (National Environment Standards for Assessing and Managing Contaminants in Soil to Protect Human Health) Regulations 2011 (NES Contaminated Soil) and territorial authority and regional council plans. For this application, the Auckland Unitary Plan (Operative in Part) (AUP) is the relevant local authority plan.

1.1 National Environment Standards for Assessing and Managing Contaminants in Soil to Protect Human Health The NES Contaminated Soil considers contamination of soil only and focuses on Human Health risks. The NES Contaminated Soil is triggered by one of five activities:

◼ Removing or replacing a fuel storage system;

◼ Soil sampling;

◼ Soil disturbance;

◼ Subdividing land; or

◼ Changing land use. When any of these activities occur on a piece of land, defined as land on which a HAIL activity is occurring, has occurred or is more likely than not to have occurred then the requirements of the NES Contaminated Soil must be followed.

1.2 Auckland Unitary Plan – Operative in Part The AUP regulates discharges from land containing elevated concentrations of contaminants and is not directly linked to any particular activity or industry. In particular the AUP Chapter E30 provides rules for contamination land for the Auckland Region. The AUP is generally only triggered by activities including:

◼ Investigation; or

◼ Disturbing soil. Should contamination be identified at concentrations that exceed permitted activity criteria, set by the AUP, then an assessment has to be made to determine if a discharge into air, into water or onto or into land is occurring and whether it complies with permitted activity criteria for the discharge. Three categories of rules exist based on the current and previous land use:

◼ Exclusive history of production land use.

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◼ Fuel storage systems.

◼ Any other land. Generally, production land discharges are always permitted. The other categories must comply with a set of assessment criteria for the undisturbed soils. This section addresses matters relevant to consideration of whether the NES Contaminated Soil regulations and the AUP Chapter E30 criteria are met within the Project area.

2 ASSESSMENT METHODOLOGY

2.1 Purpose The purpose of the assessment methodology is to identify where pieces of land (NES Contaminated Soil) and other potential sources of contamination (AUP) may be disturbed by the proposed works. This is then used to inform the requirement for resource consent. Any identified disturbance will then be considered to determine the nature of the potential effects. Where such effects are negative the proposed mitigation measures identified primarily within the CSMP are considered to determine the overall nature of the effects of the works such that a decision on the activity status and suitability of mitigation can be determined. This assessment focuses on key areas of land disturbance as detailed in the General Arrangements Plans (Ref: 506207-0420-DRG-RR-0100-0164A). It is understood that the bulk of filling is proposed around Drury interchange and the majority of cut will be required for drainage swales and retention ponds. The General Arrangement Plans demark chainage (CH) extending from CH 9000 to CH 14900 which is referenced through this assessment when describing locations along the alignment.

2.2 Summary of Preliminary Site Investigation A PSI was completed for Stage 1 by Aurecon in 2019. The PSI identified contaminating activities that may have occurred within the study area. Further information is presented in the PSI. The priority source areas within the road designation were considered to be as follows:

◼ Areas of bulk filling within the road corridor, excluding pavement.

◼ Side water channels associated with road run-off.

◼ Areas around overhead pylons associated with metallic paints. Adjacent to the highway, several source areas were considered a priority;

◼ BP Service Centre.

◼ Drury industrial estate.

◼ Potential waste disposal to ground within Drury sports field and Karaka Reserve (10R Karaka Road).

◼ Drum reconditioning facility at 30 Mercer Street. Possible source, pathway, receptor (SPR) linkages were identified for:

◼ Construction and maintenance workers that may come into direct contact with contaminated materials (soil, possibly groundwater) or inhale contaminated dust / asbestos fibres during excavation works.

◼ Adjacent site users, and adjacent residents during construction works.

◼ Surface water receptors / ecological communities that may be impacted by contaminated sediment or shallow groundwater associated with the works.

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The following controls are recommended to address the risks presented by earthworks in these areas:

◼ All earthworks will need to be completed under a CSMP. A CSMP will need to be prepared by a SQEP of contaminated land services and will need to demonstrate that risks to human health and the environment can be managed appropriately, including disposal of material to an appropriate landfill. Based on the information collected to date (PSI and DSI north of Drury Interchange), the CSMP will present conservative mitigation measures and controls.

◼ Additional DSI around Drury Interchange would provide more certainty around the type of mitigation / management measures recommended in the CSMP.

2.3 Summary of Detailed Site Investigation A DSI was completed for part of the Stage 1 area within the highway designation between CH 9000 and CH 14000 (i.e. excluding adjacent properties). The DSI does not cover the whole of the Project area, it excludes Drury Interchange and anything further south. The DSI was designed to provide information on the geological and hydrogeological conditions as well as to target suspected source areas as identified in the PSI. The DSI comprised 27 hand augers to a maximum depth of 5 m and 42 boreholes to a maximum depth of 49.6 m. The priority source areas targeted included; side water channels where road run off collects, areas of filling within the road corridor, and the influence of BP Service centre, Drury industrial estate and filling associated with Drury sports field on the ground conditions within the highway corridor. Six groundwater samples and 119 soil samples were collected and analysed for contaminants of concern across the study area. A risk assessment was completed, and the following was identified:

◼ Human Health: There was one exceedance of Tier 1 criteria in fill (BH111_0.30-0.55) for a commercial / industrial end use. This sample was collected from an area of historical filling (near Otūwairoa Creek) and may be indicative of a hotspot of arsenic. Shallow soils in this area may pose a risk to human health and the environment. This location is within Stage 1B2 and therefore not covered by this report. No further exceedances of Tier 1 were identified. Further investigation is recommended in this area.

◼ Environmental: − Results from one groundwater grab sample screened within fill reported concentrations above ANZECC 80% freshwater assessment criteria. If dewatering occurs it is considered that these perched pockets of water are the most likely to be intercepted and that appropriate disposal arrangements for the water will be required. − Auckland Unitary Plan permitted activity criteria (AUP PA) were exceeded for lead and zinc in surficial fill in three locations (BH137, HA127 and HA128) located within the road reserve and are likely attributed to road run-off. − Background concentrations for heavy metals (predominantly lead and/or arsenic) were exceeded in a third of fill samples (34 of 104). This is considered likely attributed to road run-off. These soils will not be suitable for disposal as Cleanfill.

2.4 Recommended Areas of Further Investigation

North of Drury Interchange The results indicate that the risk to human health and to the environment from the proposed P2B upgrade works within the investigation area (CH 9000 to CH 14000) is generally no more than minor.

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Lead and zinc concentrations in soil exceeded AUP permitted activity criteria in shallow surficial soils within the road reserve just south and east of Papakura interchange (CH10100SB-107500 SB). This is likely attributed to road run- off. Further investigation is recommended in this area.

2.4.1 Drury Interchange A DSI has not been completed for Drury Interchange. The PSI identified HAIL activities within properties which are to be disturbed by the proposed eastern-offline design alignment for Drury Interchange. These include 10R Karaka Road (Karaka Reserve) which is considered to be HAIL G5 due to historical filling, and 190 Flanagan Road is considered to be HAIL A10 and D5 due to the presence of an orchard and workshop. In addition to the above, side water channels, filling and overhead electricity pylons within the road corridor are sources of contamination. Where a DSI has not been completed it is recommended to be undertaken where earthworks are proposed within identified source areas. A DSI will provide data on the actual site conditions within areas of potential contamination. This will provide a better understand of the risk profile, and thus mitigation measures required. A DSI should be prioritised in the following locations:

◼ Karaka Reserve associated with waste disposal to land or formal landfilling.

◼ 190 Flanagan Road associated with an engineering workshop.

◼ Where HAIL activities or source areas have been identified and earthworks are proposed.

3 EXISTING ENVIRONMENT

3.1 General The study area is located in the south of Auckland approximately 30 kilometres (km) south of Auckland City’s Central Business District (CBD). The study area comprises an approximately 7 km section of a predominantly four-lane highway link between Papakura and Drury interchange; the Project . The study area consists of SH1 corridor. The surrounding area is a mixture of residential, undulating farmland, and commercial and industrial units. Generally, north of Otūwairoa (Slippery Creek), the area to the west is predominantly rural, and to the east is residential, however earthworks associated with Hingaia residential development are occurring to the west. On approach to Drury the land-use becomes predominantly commercial / industrial to the east, with Drury Sports Field to the west. For a full description please refer to the PSI report included in Appendix A of the Contaminated Land Assessment.

3.2 Receiving Environment

3.2.1 Geology The Auckland Geological Map, Scale 1:250,000 (Institute of Geological and Nuclear Sciences, 2001) shows the alignment underlain by the following geological units:

◼ Puketoka Formation: consisting of pumiceous mud, sand, gravel with peats and lignite, predominant in the Stage 1 area.

◼ Tauranga Group: alluvial deposits and estuarine sediments comprising interbedded silty clays and sands and silts. Generally found near streams.

◼ South Auckland Volcanic Field (Keri Keri Group): SAVF in the Manukau Lowlands comprise highly variable basaltic deposits including lava flows, scoria cones, tuff rings along with ash and lapilli deposits.

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◼ Kaawa Formation and East Coast Bays Formation (ECBF) are also likely to be encountered but are not specifically shown on the published geological maps. For further information on the ground model and the geological units identified through ground investigation refer to the Aurecon Geological Model Report. Due to the nature of surrounding topography, cutting and filling was undertaken to establish the current grade of the road. Much of the alignment underwent surficial stripping and reworking of soils. Ground investigations identified fill materials across the study area. The majority of the fill was engineered fill comprising reworked natural soils.

3.3 Watercourses At Papakura interchange there are three existing ponds and open channels that service stormwater management of SH1. These generally discharge to Karaka Lakes which is an engineered wetland (approximately 500 m west of the highway). South of Papakura interchange there is no known formalised storm water management. Generally, drainage comprises grassed side water channels (typically unlined) and culverts. The northern part of the study area is situated in Hingaia South storm water catchment. SH1 is crossed by culverts which flow from east to west and discharge into to a series of unnamed watercourses/drainage channels (within 10, 72 Hinau Road, and 115 Park Estate Road) that ultimately discharge to the Drury Creek to the west (approximately 200 m from SH1). Drury Creek flows into Pahurehure Inlet, which is located approximately 1 km north of the study area and feeds into Manukau Harbour. Further south, SH1 passes over Otūwairoa (Slippery Creek) Bridge. South of Otūwairoa (Slippery Creek) there are a number of culverts which flow east to west discharging into the CMA extents of the Ngakoroa Stream (approximately 200 m west of the highway). Otūwairoa (Slippery Creek) and Ngakoroa Stream are upper coastal reaches of Drury Creek and generally flow from south to north. The southern part of the study area is located within the Hingaia Stream catchment. The Hingaia Stream is located just east of Drury Interchange.

3.4 Groundwater The following are considered as potential groundwater bearing units:

◼ Tauranga Group: Generally, forms a regional aquitard confining the underlying Kaawa sediments. However locally Tauranga Group contains thin sandy layers and lenses which can act as dominant pathways for shallow lateral groundwater migration.

◼ Kaawa Formation: The shell beds and sandstone of the Kaawa Formation is likely to be more permeable than surrounding Tauranga Group and Waitemata Group, thus providing better groundwater storage capacity.

◼ Waitemata Group: Very low permeability, with main aquifer horizons limited to thick fractured sandstone beds and lenses which can form perched and confined aquifers. The Aurecon Groundwater Assessment Report (Ref: 506207-0410-REP-GG-0085) should be referred to for further details of the groundwater conditions.

4 DISTURBANCE OF SOIL THAT MAY BE CONTAMINATED

4.1 Key Areas of Disturbance The Project is described in the Design and Construction Report (Aurecon Ref 506207-0420-REP-NN-0077). Main areas of and disturbance are associated with the following activities:

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Areas where indicative cut, fill or piling activities are required for construction, including: Widening of the carriageway (including cutting and / or filling). New southbound loop on ramp, and realignments of northbound on and off ramps of the Papakura interchange. Construction of a SUP: A. Between Papakura Interchange and Otūwairoa (Slippery Creek) (western side). B. Between SH1 Bremner Road Overbridge and Drury interchange (western side). Replacement of SH1 Bremner Road Overbridge and Jesmond Bridge including piles; Relocation of Drury Interchange eastwards and replacement of bridges, including piles. Construction / extension of stormwater drainage. Construction of retaining structures and fill embankments. A. Piled walls (constructed by driven piles or excavation), e.g. CH 13600-13760, and north side of SH1 Bremner Road Overbridge. Areas where re-surfacing is likely to result in shallow soil disturbance, including: Construction support areas. Utilities relocation. The areas requiring the most cut are between Papakura Interchange and Otūwairoa (Slippery Creek). Indicative cut and fill volumes are provided in the Specimen Design. Earthworks are minor overall compared to other similar sized roading projects within New Zealand. The majority of the earthworks comprises filling, rather than cutting. It is anticipated that in areas of fill that there will be cut to remove surficial material / material that is geotechnically unsuitable prior to filling. The following areas have been identified as those likely to require the most cut; f) Areas of proposed stormwater upgrades, specifically swales and retention areas. i) Three artificial wetlands are proposed; within 27 Bremner Road, between CH 14080-14140 NB, and CH 14260-14300 NB. ii) A stormwater treatment filter cartridge and pipe into Hingaia Stream (SW-02) is proposed within Karaka Reserve (10R Karaka Road) to collect stormwater from Great South Road. The filter cartridge is going to be 4m deep, and then pipe 3.4-3.7m deep. The access area for operation and maintenance is likely to be approximately 1000 m2. Three other cartridges are proposed along Bremner Road and Great South Road, and these areas have not been investigated for contamination. g) Proposed SUP. h) Retaining walls, piles and ground improvements. i) Drury interchange upgrade. j) Utilities upgrades and relocation. Table 4-1 below summarises where potential contaminant source activities interact with proposed construction activities. These are also shown on the drawing contained in Appendix D of the Contaminated Land Assessment (reference: 506207-0490-DRG-KF-5181 to 5184). Source areas that have been discounted through the DSI are not included in the table.

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Table 4-1 Summary of Earthworks in known HAIL areas within the Project

Location / Source HAIL Activity / Relevant COPC Construction Activity Chainage Activity AUP E30 Consideration

Source activities within the road designation and proposed areas of earthworks

10R Karaka Filling with G5 (HAIL) and AUP Heavy metals, Drury interchange upgrades, Road - Karaka unknown E30 hydrocarbons (including stormwater upgrades, utilities Reserve material / waste PAH), ACM, PASS/ASS upgrades, retaining walls, disposal to land

190 Flanagan Engineering D5 (HAIL) and AUP Hydrocarbons heavy As above Road workshops E30 metals, VOCs, SVOCs,

SH1 Filling for AUP E30 Hydrocarbons (including As above designation highway PAHs), heavy metals, Drury construction PASS/ASS interchange NB & SB (CH14000- 14900)

SH1 Side water AUP E30 Hydrocarbons (including designation channels PAHs), heavy metals, Drury PASS/ASS interchange NB & SB (CH14000- 14900)

SH1 Metallic paints AUP E30 Heavy metals, notably As above designation - (pylons) zinc, copper and lead CH 13960 SB and CH14000- 14900

SH1 Side water AUP E30 Lead and Zinc As above designation - channels / road CH 10100 SB reserve – 107500 SB

31 Bremner Vehicle storage HAIL F4 Hydrocarbons heavy As above Road metals, VOCs, SVOCs,

115 Park Bulk storage or A10 (HAIL) and Heavy metals, SUP, Drury interchange upgrades Estate Road use of AUP E30 organochlorine pesticides 190 Flanagan pesticides (OCPs) Road, 68 Pitt Road

18- 20 Victoria Filling with G5 (HAIL) and AUP Heavy metals, SUP Street unknown E30 hydrocarbons (including material / waste PAH), ACM, disposal to land

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Source activities identified adjacent to the road designation and proposed areas of earthworks (to be reviewed and removed as appropriate by implementation phase SQEP once earthworks are confirmed)

20 Firth Street Corrosives A4 (HAIL) and AUP Heavy metals, sulphate Within 50m of the activities; widening of including E30 the carriageway including formulation or embankments, stormwater upgrades, bulk storage Drury interchange upgrades,

20 Firth Bulk storage or A10 (HAIL) and Heavy metals, OCPs As above Street, 60 use of AUP E30 Mercer Street, pesticides 190 Flanagan Road,

10 Firth Deteriorated E1 (HAIL) Asbestos containing As above Street, 301- historical materials (ACM), and lead 305 Great construction South Road materials (asbestos)

30 Mercer Motor vehicle F4 (HAIL) and AUP Hydrocarbons (including As above Street, 87 workshops E30 PAHs), VOC, and heavy Creek Street metals

30 Mercer Drum or tank G2 (HAIL) and AUP Heavy metals, As above Street reconditioning E30 hydrocarbons (including or recycling PAH), VOC,

4.2 Soil disturbance and the AUP/NES Contaminated Soil This section has described the AEE assessment requirements, the methodology to meet those requirements, the environment that the soil disturbance will take place in and the potential areas where contamination may be present. The results of the DSI indicate that fill with contaminants above background will be disturbed, with some minor areas of shallow fill with contaminants at health significant levels. The limitations of the DSI must be recognised in terms of the amount of sampling undertaken and the absence of investigation of specific areas. On the basis of a limited groundwater investigation, where encountered it may be contaminated.

WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION A | PAGE 97

APPENDIX D – CONTAMINATED LAND DRAWINGS Drawing References 506207-0450-DRG-KF-5181 to 5184 Drawing Title Contaminated Land Further Investigations Areas, Stage 1B1

WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION A | PAGE 98

¯

10600

10500

10400

10300

10200

10100

10000

9900

9800

9700

9600

9500

9400

9300

9200

9100

LEGEND

SH1 DESIGNATION F - VEHICLE REFUELLING, SERVICE AND REPAIR

G - CEMETERIES AND WASTE RECYCLING, TREATMENT AND DISPOSAL STUDY AREA

NOTES: ELEVATED LEAD AND ZINC IN SURFICIAL SOIL ABOVE AUP PA -LOCATIONS ARE APPROXIMATE PSI - POTENTIAL HAIL ACTIVITIES - PLAN SHOWS AREAS WHICH HAVE NOT BEEN INVESTIGATED OR REQUIRE A - CHEMICAL MANUFACTURE, APPLICATION AND BULK STORAGE FURTHER INVESTIGATION BASED ON CURRENT UNDERSTANDING OF SIDE WATER CHANNELS PROPOSED DESIGN D - METAL EXTRACTION, REFINING AND REPROCESSING - FILLING WILL HAVE OCCURED BENEATH THE HIGHWAY DURING CONSTRUCTION. OVERHEAD PYLONS - LOCATIONS OF SIDE WATER CHANNELS ARE APPROXIMATE. E - MINERAL EXTRACTION, REFINING AND REPROCESSING, STORAGE AND USE -AUCKALAND UNITARY PLAN PERMITTED ACTIVITY CRITERIA (AUP PA) ARSENIC HOTSPOT SOURCE: ESRI, MAXAR, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY, SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 20.03.20 FOR ISSUE WITH THE STAGE 1B1 CSMP J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY DRAWN R COLVIN CONTAMINATED LAND -SHEET 1 OF 4 DATE DESIGNED 01.09.20 TITLE FURTHER INVESTIGATION AREAS, STAGE 1B1 N BURROWS PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0450 - DRG - KF - 5181 - A ¯

12000

11900

11800

11700

11600

11500

11400

11300

11200

11100

11000

A10

10900

10800

10700

10600 LEGEND

10500 SH1 DESIGNATION F - VEHICLE REFUELLING, SERVICE AND REPAIR

G - CEMETERIES AND WASTE RECYCLING, TREATMENT AND DISPOSAL

10400 STUDY AREA

NOTES: PSI - POTENTIAL HAIL ACTIVITIES ELEVATED LEAD AND ZINC IN SURFICIAL SOIL ABOVE AUP PA 10300 -LOCATIONS ARE APPROXIMATE - PLAN SHOWS AREAS WHICH HAVE NOT BEEN INVESTIGATED OR REQUIRE A - CHEMICAL MANUFACTURE, APPLICATION AND BULK STORAGE FURTHER INVESTIGATION BASED ON CURRENT UNDERSTANDING OF SIDE WATER CHANNELS PROPOSED DESIGN D - METAL EXTRACTION, REFINING AND REPROCESSING 10200 - FILLING WILL HAVE OCCURED BENEATH THE HIGHWAY DURING CONSTRUCTION. OVERHEAD PYLONS - LOCATIONS OF SIDE WATER CHANNELS ARE APPROXIMATE. E - MINERAL EXTRACTION, REFINING AND REPROCESSING, STORAGE AND USE -AUCKALAND UNITARY PLAN PERMITTED ACTIVITY CRITERIA (AUP PA) ARSENIC HOTSPOT SOURCE: ESRI, MAXAR, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY, SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 20.03.20 FOR ISSUE WITH THE STAGE 1B1 CSMP J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY DRAWN R COLVIN CONTAMINATED LAND -SHEET 2 OF 4 DATE DESIGNED 01.09.20 TITLE FURTHER INVESTIGATION AREAS, STAGE 1B1 N BURROWS PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0450 - DRG - KF - 5182 - A ¯

13200

13100

13000

12900

12800

12700

12600

12500

12400

12300 100

12200

12100

12000

11900

11800

11700

LEGEND 11600 SH1 DESIGNATION F - VEHICLE REFUELLING, SERVICE AND REPAIR

G - CEMETERIES AND WASTE RECYCLING, TREATMENT AND DISPOSAL STUDY AREA 11500 NOTES: ELEVATED LEAD AND ZINC IN SURFICIAL SOIL ABOVE AUP PA -LOCATIONS ARE APPROXIMATE PSI - POTENTIAL HAIL ACTIVITIES - PLAN SHOWS AREAS WHICH HAVE NOT BEEN INVESTIGATED OR REQUIRE A - CHEMICAL MANUFACTURE, APPLICATION AND BULK STORAGE FURTHER INVESTIGATION BASED ON CURRENT UNDERSTANDING OF SIDE WATER CHANNELS PROPOSED DESIGN D - METAL EXTRACTION, REFINING AND REPROCESSING - FILLING WILL HAVE OCCURED BENEATH THE HIGHWAY DURING CONSTRUCTION. OVERHEAD PYLONS - LOCATIONS OF SIDE WATER CHANNELS ARE APPROXIMATE. E - MINERAL EXTRACTION, REFINING AND REPROCESSING, STORAGE AND USE -AUCKALAND UNITARY PLAN PERMITTED ACTIVITY CRITERIA (AUP PA) ARSENIC HOTSPOT SOURCE: ESRI, MAXAR, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY, SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 20.03.20 FOR ISSUE WITH THE STAGE 1B1 CSMP J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY DRAWN R COLVIN CONTAMINATED LAND -SHEET 3 OF 4 DATE DESIGNED 01.09.20 TITLE FURTHER INVESTIGATION AREAS, STAGE 1B1 N BURROWS PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0450 - DRG - KF - 5183 - A ¯

G5 E1 A10 & D5 A10, A4

14000 A10

13900

100

13800

200

13700

13600 G2 A17 F4 13500 G5

13400 A10

13300

13200

F4

G5

LEGEND

SH1 DESIGNATION F - VEHICLE REFUELLING, SERVICE AND REPAIR

G - CEMETERIES AND WASTE RECYCLING, TREATMENT AND DISPOSAL STUDY AREA

NOTES: ELEVATED LEAD AND ZINC IN SURFICIAL SOIL ABOVE AUP PA -LOCATIONS ARE APPROXIMATE PSI - POTENTIAL HAIL ACTIVITIES - PLAN SHOWS AREAS WHICH HAVE NOT BEEN INVESTIGATED OR REQUIRE A - CHEMICAL MANUFACTURE, APPLICATION AND BULK STORAGE FURTHER INVESTIGATION BASED ON CURRENT UNDERSTANDING OF SIDE WATER CHANNELS PROPOSED DESIGN D - METAL EXTRACTION, REFINING AND REPROCESSING - FILLING WILL HAVE OCCURED BENEATH THE HIGHWAY DURING CONSTRUCTION. OVERHEAD PYLONS - LOCATIONS OF SIDE WATER CHANNELS ARE APPROXIMATE. E - MINERAL EXTRACTION, REFINING AND REPROCESSING, STORAGE AND USE -AUCKALAND UNITARY PLAN PERMITTED ACTIVITY CRITERIA (AUP PA) ARSENIC HOTSPOT SOURCE: ESRI, MAXAR, GEOEYE, EARTHSTAR GEOGRAPHICS, CNES/AIRBUS DS, USDA, USGS, AEROGRID, IGN, AND THE GIS USER COMMUNITY, SOURCES: ESRI, HERE, GARMIN, USGS, INTERMAP, INCREMENT P, NRCAN, ESRI JAPAN, METI, ESRI CHINA (HONG KONG), ESRI KOREA, ESRI (THAILAND), NGCC, (C) OPENSTREETMAP CONTRIBUTORS, AND THE GIS USER COMMUNITY

125 62.5 0 125 250

Meters CLIENT REV DATE REVISION DETAILS APPROVED SCALE SIZE PRELIMINARY A 20.03.20 FOR ISSUE WITH THE STAGE 1B1 CSMP J HIND 1:5,000 A3 PROJECT APPROVED NOT FOR CONSTRUCTION SH1 PAPAKURA TO BOMBAY DRAWN R COLVIN CONTAMINATED LAND -SHEET 4 OF 4 DATE DESIGNED 01.09.20 TITLE FURTHER INVESTIGATION AREAS, STAGE 1B1 N BURROWS PROJECT No. AREA TYPE DISC NUMBER REV REVIEWED J. HIND DRAWING No. T DEE 506207 - 0450 - DRG - KF - 5184 - A

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