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 Copyright ©. This copyright work is licensed under the Creative Commons Attribution 4.0 International licence. In essence, you are free to copy, distribute and adapt the work, as long as you attribute the work to the NZ Transport Agency and abide by the other licence terms. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. Disclaimer The NZ Transport Agency has endeavoured to ensure the material in this document is technically accurate and reflects legal requirements. However, the document does not override governing legislation. The NZ Transport Agency does not accept liability for any consequences arising from the use of this document. If the user of this document is unsure whether the material is correct, they should refer directly to the relevant legislation and contact the NZ Transport Agency. More information NZ Transport Agency June 2021 If you have further queries, call our contact centre on 0800 699 000 or write to us: NZ Transport Agency Private Bag 6995 Wellington 6141 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). WAKA KOTAHI NZ TRANSPORT AGENCY FILE 506207-0490-REP-KF-0066.DOCX | 10/06/2021 | REVISION B | PAGE 1 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