Construction Contaminated Land Management Plan

Transcription

1 Construction Contaminated Land Project Name: WestConnex New M5 Project number: Document number: M5N-ES-PLN-PWD-0033 Revision date: 18 June 2018 Revision: 03 Document Approval Rev. Date Prepared by Reviewed by Recommended by Approved by Remarks 00 16/05/ /06/2016 CDS-JV 02 1/11/2016 CDS-JV 03 18/06/2018 CDS-JV Signature:

2 Construction Contaminated Land Details of Revision Amendments Document Control The Project Director is responsible for ensuring that this Plan is reviewed and approved. The Support Services Director is responsible for updating this Plan to reflect changes to the Project, legal and other requirements, as required. Amendments Any revisions or amendments must be approved by the Project Director before being distributed or implemented. Revision Details Revision Details 00 Issue for consultation with Site Auditor and key stakeholders 01 Issued to DP&E 02 Update to address DP&E comments 03 Appendix C added. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 2 of 48

3 Construction Contaminated Land Contents 1. Introduction Context Objectives of this Plan Scope Interface with Other Plans Project Planning Commitments and Approval EIS Contamination Assessment and Commitments Planning Approval Conditions Other Legislative and Guideline Requirements Contaminated Land Management Act Protection of Environment Operations Act Protection of the Environment Operations (Waste) Regulation Other Legislation and Guidelines Guidelines and Relevant Documents Surface Disturbance Construction Activities Management Process Phase 1 ESA Phase 2 Sampling, Analytical and Quality Plan (SAQP) Phase 2 ESA Remediation Action Plan (RAP) Remediation Validation Report (RVR) Long Term Site Environmental (LT-SEMP) Site Audit Report (SAR) and Site Audit Statement (SAS) Implementation Roles and Responsibilities Training and Awareness Consultation Operational Mitigation and Management Actions Environmental Plans and Procedures Mitigation and Management Measures Inspection, Monitoring and Reporting Review Plan Revision References Appendix A Glossary of Terms Appendix B Properties preliminary risk evaluation of potential contamination Appendix C Alexandra Canal Contamination Appendix D Manage Contaminated Land Procedure WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 3 of 48

4 Construction Contaminated Land 1. Introduction 1.1 Context The New M5 Project is the Stage 2 component of the WestConnex scheme, a NSW Government initiative to connect Sydney s west and south-west with the Sydney Airport and the Port Botany precinct. It is being delivered by the Sydney Motorway Corporation (SMC), formerly the WestConnex Delivery Authority (WDA). The CPB Dragados Samsung Joint Venture (CDS-JV) will deliver the design and construction of WestConnex Stage 2 referred to as the WCX New M5 (the Project). The Project will run from the existing M5 East corridor at Beverly Hills via tunnel to St Peters, providing improved access to the airport, south Sydney and Port Botany precincts. The Project will substantially improve the east - west corridor access between the Sydney Central Business District, Port Botany and Sydney Airport precincts and the South West growth areas. The Project will deliver approximately nine kilometres of two-lane twin tunnels with capacity to operate three lanes in the future, motorway to motorway connections to the King Georges Road Interchange Upgrade at Beverly Hills, and a new interchange at St Peters. Infrastructure Approval was received on 20 April 2016 and major works are expected to commence in mid-2016, with the WCX New M5 tunnel is scheduled to open to traffic in late This Construction Contaminated Land (CCLMP) has been developed to set out the Project strategy for the assessment and management of contaminated land during construction. It cites the requirements for the completion and documentation of a series of site specific contamination assessments and the preparation of site specific remediation and/or management plans to be implemented during construction. The CCLMP has been prepared in response to a requirement under Project Conditions of Approval (CoA). Specifically it responds to CoA B31 and D54 (refer to Section 2.2). As noted in CoA D54, the CCLMP excludes contamination at the Alexandria Landfill site. A separate Landfill Closure (LCMP) has been developed to manage contamination at this site. 1.2 Objectives of this Plan 1.3 Scope This CCLMP describes the strategy to be adopted by CDS-JV to identify, assess, manage and mitigate impacts associated with potential areas of contamination that, where identified, may pose a risk to health and the environment during construction. Implementation of the strategy should ensure an efficient, staged, and transparent/ auditable process for the identification, assessment, mitigation (remediation) and/or management of contamination within the Project footprint. The process defined under the strategy, if implemented to an appropriate standard, should also minimise the risk of land, within the Project footprint, being determined as unsuitable for the proposed land use. The objectives of this Plan include: Ensuring that potentially contaminated sites are identified, assessed and managed in accordance with legislative and Project specific requirements. Ensuring appropriate controls and procedures are implemented during construction activities to avoid or minimise potential adverse impacts from contaminated materials within the Project footprint. Ensure contaminated land is managed to achieve criteria appropriate for the proposed future land suitability as a road corridor and/or public open space. Ensure that migration of contamination off the Project site does not occur as a result of construction activities associated with the Project. Deal with any unexpected finds of contaminated material in a manner that minimises risk to human health and the environment. The CCLMP specifically documents: The nature of construction activities with the potential to disturb contamination; WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 4 of 48

5 Construction Contaminated Land Locations identified within the Project footprint which have the potential to expose areas know to contain, or potentially contain, contamination; An outline of the contamination assessment and management process, which includes the necessary reviews to ensure contamination within the Project footprint will be remediated and/or managed to a level to facilitate site suitability for the interim and/ proposed land use. Specifically the review process includes independent audit using a Site Auditor accredited under the NSW Site Auditor Scheme (administered by the Contaminated Land Management Act (CLM Act) 1997). General description of possible mitigation measures for managing contamination, including the handling, treatment and management of contamination; General description of the monitoring, auditing and reporting of actions and mitigation measures; The Unexpected Finds process to manage potentially contaminated materials that may be encountered during site establishment and / or construction works. An outline of the review and improvement process for this Plan. A NSW Accredited Site Auditor has been engaged by CDS-JV to undertake independent reviews of various documentation generated under the strategy defined by this Plan, thereby providing an increased certainty to the Department of Planning and Environment (DP&E) NSW and other stakeholders (local Councils and the NSW Environment Protection Authority (EPA)) about the suitability of the Project site for the proposed land use or the extent and nature of contamination. This CCLMP will be an active management document and as such, as additional information becomes available, this Plan may be updated. As noted in Section 1.1, site specific contamination assessments and remediation and/or management plans, to be implemented during construction, will be prepared in response to the strategy. Preparation of this document set will be staged as various sites become available for assessment and/or management. The document set will be subject to an independent technical review process by a NSW EPA Site Auditor accredited under the CLM Act This document set will include a management plan which presents mitigation measures to minimise sediment mobilisation as a result of construction activities at the Alexandra Canal. 1.4 Interface with Other Plans This CCLMP is a standalone Plan for the management of contamination within the Project footprint. Whilst this document links with the Construction Environmental (CEMP) as outlined in the CEMP framework presented in Table 1, and makes specific reference to plans and sub plans prepared under the CEMP, the procedures described herein are independent. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 5 of 48

6 Construction Environmental Construction Contaminated Land Table 1: New M5 CEMP Framework Sub-Plans to CEMP Sub-Plan attachments Standalone Documentation (linked to CEMP) Construction Air Quality Sub Plan Construction Noise and Vibration Sub Plan Construction Traffic & Access Sub Plan NA Out of Hours Works Protocol Blast Management Strategy NA Sustainability Plan Ancillary Facilities Manage Air Quality Procedure Land Use Survey Sustainability Plan Ancillary Facilities Manage Environment Noise Issues Procedure Traffic s Ancillary Facilities Local Road Dilapidation Report Road Safety Audit Construction Soil & Water Quality Sub Plan N/A Flood Mitigation Strategy Groundwater and Soil Salinity Report Sustainability Plan Geotechnical Model Ancillary Facilities Construction Contaminated Land Manage Contaminated Land Procedure Manage Soil and Water procedure Water Quality Plan and Monitoring Program Acid Sulfate Soil Management Procedure Asbestos Guideline Construction Heritage Sub Plan Construction Flora & Fauna Sub Plan Waste and Resource Sub Plan NA Pathogen and Weed Management Strategy Nest Box Management Plan Ecological Monitoring Program Microbat Management Plan NA Sustainability Plan Geotechnical Model Ancillary Facilities Manage Cultural Heritage Procedure Sustainability Plan Ancillary Facilities Arncliffe Construction Compound Sub Plan Urban Design and Landscape Management Plan Biodiversity Offsets Package Manage Flora and Fauna Procedure Sustainability Plan Manage Waste Procedure Energy Efficiency and Greenhouse Gas Emissions Strategy NA Sustainability Plan WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 6 of 48

7 Construction Contaminated Land 2. Project Planning Commitments and Approval Project Approval was granted under Part 5.1 of the Environmental Planning and Assessment Act 1979 (EP&A Act). The Project is declared to be State Significant Infrastructure (SSI) under the EP&A Act and accordingly was subject to assessment under Part 5.1 of the EP&A Act, requiring the approval of the Minister for Planning. An Environmental Impact Statement (EIS) was therefore also required. On 11 August 2015, the Commonwealth Minister for the Environment determined that the project has the potential to significantly impact on a matter of national environmental significance and is therefore a controlled action. This means that Approval of the project is also required from the Commonwealth Minister for the Environment in addition to environmental and planning approvals required under State legislation on account of it having the potential to significantly impact on a matter of national environmental significance. The Project EIS was able to be adopted for the purpose of meeting the assessment requirements of both the Commonwealth EPBC Act 1999 and the NSW EP&A Act This CCLMP has been prepared with consideration of Project requirements, including: to address the mitigation measures listed in the New M5 EIS; the Submissions and Preferred Infrastructure Report (SPIR) and the Conditions of Approval for the Project relevant to contamination. 2.1 EIS Contamination Assessment and Commitments Contamination Management Requirements The Revised Environmental Management Measures (REMMs) included in the EIS and SPIR relating to the management of contamination during construction are included in Table 2. These mitigation and management measures are required to be addressed and implemented during the construction for the New M5 Project. Table 2: Revised Environmental Management Measures from New M5 EIS relevant to the management of the contamination during construction Reference Requirement Where addressed REMM CM03 REMM CM04 REMM CM05 REMM CM06 REMM CM07 Potentially contaminated areas directly affected by the project would be investigated and managed in accordance with the requirements of guidance endorsed under section 105 of the CLM Act. This includes further investigations in areas of potential contamination identified in the construction footprint. An unexpected finds and hazardous materials procedure would be implemented to manage any potentially contaminated materials that may be encountered during site preparation and / or construction works. Waste management plans, as part of the CEMP, would include procedures for handling and storing potentially contaminated spoil and, should off-site disposal be required, undertaking waste assessment and classification for off-site disposal to appropriately licenced waste facilities. See Chapter 24 (Resource use and waste minimisation) of the EIS for more information. Site specific asbestos management plans would be developed where relevant. Refer to Chapter 24 (Resource use and waste minimisation) for further information on asbestos management. A hazardous materials assessment would be carried out prior to and during the demolition of buildings. Demolition works would be undertaken in accordance with the relevant Australian Standards and relevant NSW WorkCover 1 Codes of Practice, including the Work Health and Safety Regulation Under this Plan Manage Contaminated Land Procedure Construction Waste and Resource Sub Plan Manage Work with Asbestos (M5N-ES- GUI-PWD-0001) Project WHS (M5N-HS-PLN-PWD- 0001) 1 Now known as SafeWork, NSW WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 7 of 48

8 Construction Contaminated Land Reference Requirement Where addressed Manage Work with Asbestos (M5N-ES- GUI-PWD-0001) REMM CM08 REMM CM09 REMM CM10 REMM CM11 REMM CM12 REMM CM13 REMM CM14 REMM CM15 A dangerous goods search of the WorkCover NSW 1 records for licenced dangerous good would be undertaken prior to construction. An explosive ordnance due diligence assessment would be completed at the identified former ammunition site (Project area 3), located between Flatrock Road, Bexley Road and Wolli Creek. In the event of encountering unexpected finds of contamination (i.e. the observation of offensive odours, soil discoloration, buried waste or potential asbestos containing materials) during construction, work in the area would cease until an appropriately qualified environmental consultant can advise on the need for further assessment, remediation or other action, as deemed appropriate. Further assessment and management of contamination, if required, would be undertaken in accordance with section 105 of the CLM Act. (Authors Note: The above reference to section 105 of the CLM Act. Should be read as the guidelines made or approved by the EPA under section 105 of the CLM Act.) Appropriate mitigation measures to minimise sediment mobilisation as a result of construction activities at the location of the new stormwater infrastructure at Alexandra Canal would be detailed in the CEMP in accordance with the requirements of the Remediation Order in consultation with NSW EPA and Sydney Water. Measures would be detailed in an Alexandra Canal Contamination. Appropriate mitigation measures including stockpiling and management of potentially contaminated material would be undertaken at construction compounds to prevent movement of material into receiving waters. Plant, equipment and supplies would be managed to prevent spills and leaks. See Chapter 26 (Hazard and risk) of the EIS for more information. Tunnel washing water and waste would be appropriately contained, treated and disposed of. Refer to Chapter 24 (Resource use and waste minimisation) of the EIS for more information. Further in situ testing of soils in areas of known potential contamination to determine waste classification. Phase 1 ESA reports prepared under this Plan Site specific Phase 1 ESA report prepared under this Plan Manage Contaminated Land Procedure Plan to be prepared under this Plan Construction Soil & Water Quality Sub Plan Site Specific RAPs CEMP Construction Soil & Water Quality Sub Plan Manage Hazardous Substances Procedure CEMP Construction Soil & Water Quality Sub Plan Phase 2 ESAs reports prepared under this Plan Construction Soil and Water Quality Sub Plan Construction Waste and Resource Sub Plan WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 8 of 48

9 Construction Contaminated Land Identified Areas of Concern The Project EIS included the preparation of WestConnex New M5 Technical Working Paper: Contamination (AECOM 2015). This paper details the findings of an overarching Phase 1 Environmental Site Assessment (ESA) completed as part of the EIS process to identify areas of potential contamination concern provide a preliminary assessment of contamination risks associated with the surface disturbance areas of the Project study area. The paper divides the project study area into the following five areas: Western surface works; Kingsgrove Road surface works; Bexley Road surface works; Arncliffe surface works at Kogarah Golf Course; and St Peters interchange and local road upgrades. Based on a review of available information, a preliminary contamination risk evaluation of identified areas of potential concern was undertaken using a risk matrix. Low, Medium or High risks were assigned to each identified area of contamination concern. A total of 34 sites were identified within the Project study area as requiring further investigation to assess for potential Medium and High contamination risks. For sites located in the current project footprint; and identified in the EIS as requiring further investigation (on the basis of an identified moderate to high risk of contamination present at the site), the findings of the Phase 1 ESA are being updated under this Plan. This includes, as required, addressing desktop review data gaps (e.g. SafeWork NSW Dangerous Goods Searches) and undertaking walk over inspections at sites with previously limited access. The update of the Phase 1 ESA will also include consideration of the latest available information relating to the nature and extent of anticipated site disturbance activities proposed by CDS-JV. The 34 sites identified as areas of concern in the EIS are presented in Appendix B as a table and location maps. Where practical, for efficiency a number of sites have been merged for further consideration under this Plan. 2.2 Planning Approval Conditions Project Approval for SSI 6788 was determined on 20 April Conditions of Approval that specifically address management of contamination are identified in Table 3. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 9 of 48

10 Construction Contaminated Land Table 3: Conditions of Approval that address contamination management Reference Requirement Where addressed B31 D54 Prior to the commencement of any activities that would result in the disturbance of land and/or soil, or as otherwise agreed by the Secretary, in areas identified as having a moderate to high risk of contamination, a Soil Contamination Report must be prepared by a suitably qualified person(s) in accordance with the requirements of the Contaminated Land Management Act 1997 and associated guidelines, detailing the outcomes of Phase 2 contamination investigations within these areas. The Soil Contamination Report must detail, where relevant, whether the land is suitable (for the intended land use) or can be made suitable through remediation and/or outline the potential contamination risks from the SSI to human health and receiving waterways. For land to be disturbed by the SSl, where the investigations identify that the site is suitable for the intended operations and that there is no need for a specific remediation strategy, measures to identify, handle and manage potential contaminated soils, materials and groundwater must be identified in the Soil Contamination Report and incorporated into the Construction Environmental, unless otherwise agreed by the Secretary. Should a remediation strategy be required, the Soil Contamination Report must include a Remediation Action Plan for addressing the disturbed area, and how the environmental and human health risks will be managed during the disturbance, remediation and/or removal of contaminated soil or groundwater. lf remediation is required, the Soil Contamination Report must be accompanied by a Site Audit Statement(s), prepared by an accredited Site Auditor under the Contaminated Land Management Act 1997, verifying that the disturbed area has been or can be remediated to a standard consistent with the intended land use. Where land is remediated, a final Site Audit Statement(s) must be prepared by an accredited Site Auditor, certifying that the contaminated disturbed areas have been remediated to a standard consistent with the intended land use. The final Site Audit Statement must be submitted to the Secretary and relevant councils prior to operation of the SSl, unless otherwise agreed to by the Secretary. The Proponent must prepare and implement a Construction Contamination to manage potential contamination impacts during construction of the SSI (excluding contamination covered by the Landfill Closure for the Alexandria Landfill site). The Construction Contamination must be developed in consultation with the EPA and relevant councils, and include, but not be limited to: (a) details of construction activities and their locations which have the potential to expose areas known to contain, or potentially contain, contaminated soils and/or materials; Within site specific contamination reports It is noted that the reference to the incorporation into the Construction Environmental is an error and it should reference the Construction Contamination in D54 This Plan. See Section 4 and 2.1 WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 10 of 48

11 Construction Contaminated Land Reference Requirement Where addressed (b) details of management measures to minimise bed sediment mobilisation in Alexandra Canal. All measures must comply with the actions required of Remediation Order HO1833, Area #3151 issued by the EPA on 10 May 2004; (c) measures for the handling, treatment and management of hazardous and contaminated soils, materials and groundwater including measures to manage and/or minimise public health and safety concerns with regards to exposure to contamination; (d) an Unexpected Finds Procedure detailing procedures and management measures to be implemented in the event that contaminated material is uncovered in any area not identified in the documents referred to in conditions A2(b), A2(c) and A2(e); (e) a description of how the effectiveness of the actions and measures for managing contamination impacts would be monitored during the proposed works, clearly indicating how often this monitoring would be undertaken, the locations where monitoring would take place, and how the results of the monitoring would be recorded and reported; and (f) mechanisms for the monitoring, review and amendment of this Construction Contamination. The Construction Contamination must be submitted to the Secretary prior to undertaking any works which may result in the disturbance of contaminated soil, land or materials. Nothing in this condition prevents the Proponent from preparing separate Construction Contamination s for specific areas of work, rather than a plan which addresses the entire SSl. An Appendix C within this Plan Section 7.2 and the Waste and Resource Section 7.2 Section 8 and within site specific RAPs and/or LT-SEMPs Section 9 This Plan WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 11 of 48

12 Construction Contaminated Land 3. Other Legislative and Guideline Requirements The Minister for Planning is the consent authority for the Project; however, the City of Sydney Council, Marrickville Council, Rockdale City Council, City of Canterbury Council and Hurstville City Council as well as the NSW EPA are listed as stakeholders for consultation during the development of the CCLMP. The other principal laws and legislative instruments applying to the management of contamination for this Project are described below. 3.1 Contaminated Land Management Act 1997 In NSW, the management of contaminated land is shared by the NSW EPA, the Department of Planning and Environment (DP&E) and planning consent authorities (usually local councils). The NSW Contaminated Land Management (CLM) Act 1997 is the primary Act under which contaminated land is regulated by the NSW EPA for land located in NSW. Under Part 3 of the CLM Act 1997 the NSW EPA regulates contaminated sites where the contamination is Significant Enough to Warrant Regulation (SEWR). Alexandra Canal is regulated under the CLM Act There is also a duty for landowners to, and persons who have responsibility for contamination to, notify the EPA under s60 of the CLM Act where contamination is identified that is potentially SEWR. Contaminated sites that are not regulated by the NSW EPA are managed by local councils through land use planning processes. As the Project is State Significant Infrastructure contaminated sites that are not regulated by the NSW EPA shall be managed through DP&E land use planning processes (as the consent authority) in consultation with local councils. NSW EPA also administers the NSW Site Auditor scheme under Part 4 of the CLM Act 1997, makes or approves guidelines for use in the assessment and remediation of contaminated sites, and administers the public record of regulated sites under the CLM Act Where there is a requirement for a Site Audit Statement under the CoA (B31) they must be prepared by a Site Auditor accredited under the Contaminated Land Management Act 1997 (CLM Act). As such it is implicit that assessment of contamination and remediation of land under the Project is completed in accordance with the guidelines made or approved under section 105 of the CLM Act Protection of Environment Operations Act The objectives of the POEO Act are to protect, restore and enhance the quality of the environment in NSW, having regard to the need to maintain ecologically sustainable development. The requirements of the POEO Act and associated schedules and regulations are relevant to the assessment and management of contaminated land and prevention of contamination to land. The POEO Act defines waste for regulatory purposes and establishes management and licensing requirements, including waste classification, resource recovery exemptions, general immobilisation approvals and requirements for immobilisation of wastes. The POEO Act prescribes certain activities as scheduled activities that may only be conducted in accordance with the conditions of an Environment Protection Licence (EPL). An application for an EPL has been lodged with the EPA. 3.3 Protection of the Environment Operations (Waste) Regulation 2014 The POEO Act defines waste for regulatory purposes and establishes management and licensing requirements, including waste classification, resource recovery exemptions, general immobilisation approvals and requirements for immobilisation of wastes. The Protection of the Environment (Waste) Regulation 2014 provides for the exemptions and orders for the reuse of waste, particularly the use of waste that is to be applied to land. The Waste Regulation also outlines the required documentation and approvals required for the handling, off-site transport and disposal of waste (including Hazardous Waste) during the Project. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 12 of 48

13 Construction Contaminated Land 3.4 Other Legislation and Guidelines Additional legislation and guidelines relevant to the CCLMP include: Work Health and Safety Act (and Regulation) 2011; Water Management Act 2000; Waste Avoidance and Resource Recovery Act 2001; Australian Standards and Codes of Practices; and Sydney Water Act 1994 Relevant provisions of the above legislation are explained in the register of legal and other requirements included in the CEMP. 3.5 Guidelines and Relevant Documents The procedures for identification, assessment, and remediation and management of contamination are documented in various guidance documents endorsed by the NSW EPA under Section 105 of the CLM Act The main guidelines, specification and policy documents relevant to this CCLMP include: ANZECC/ARMCANZ, 2000, Australian and New Zealand Guidelines for Fresh and Marine Water Quality. Australian and New Zealand Environment and Conservation Council and Agriculture and Resource Management Council of Australia and New Zealand, Paper No 4, Canberra. DEC 2006, Guidelines for the NSW Auditor Scheme (2nd Edition), Department of Environment and Conservation NSW. DEC 2007, Contaminated Sites: Guidelines for the Assessment and Management of Groundwater Contamination. NSW EPA, Sydney. EPA 1995, Contaminated Sites: Sampling Design Guidelines. NSW EPA, Sydney. EPA 2014, Waste Classification Guidelines, Part 1: Classifying waste. NSW EPA, Sydney. NEPC 2013, National Environment Protection (Assessment of Site Contamination) Measure (NEPM) 1999, National Environment Protection Council; and OEH 2011, Guidelines for Consultants Reporting on Contaminated Sites, Office of Environment and Heritage. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 13 of 48

14 Construction Contaminated Land 4. Surface Disturbance Construction Activities Table 4 presents the site description and key construction surface work activities that have the potential to expose areas of known or potential contamination. Table 4 lists: the 14 identified construction compound sites (C1-C14 inclusive); the Alexandra Canal, an area of known sediment contamination currently managed under an NSW EPA Notice under the CLM Act 1997; Temporary construction power enabling alignment; and Road construction work areas not within defined construction compounds, including road and bridge construction areas. Further information for construction compound activities is provided in the Ancillary Facilities (AFMP) (M5N-ES-PLN-PWD ). Table 4: Area Description and Proposed Key Work Activities with the Potential to Expose Contamination Site Description Key Work Activities with the Potential to Expose Contamination Kingsgrove North (C1) Construction Compound Site The Kingsgrove North construction compound (C1) would be located on the northern side of the existing M5 East Motorway between Canterbury Golf Course and Garema Circuit, Kingsgrove. The Kingsgrove North construction compound site is located within Beverly Grove Park, Kingsgrove. The site would service the construction works between the western limit of works and the eastbound tunnel portal, including construction of the dive structures and cut-and-cover tunnel sections and realignment of the M5 Motorway to accommodate the tunnel portals. This site also provides an offmotorway connection to the Kingsgrove South Compound, via the Kindilan underpass, removing the need to travel on local roads. Establishment - Installation and construction of site fencing, a temporary noise barrier is proposed for the northern boundary, lighting, signage. - Realign the existing shared pedestrian and bicycle path that currently passes through the site. - Demolition of existing structures. - Clearing and grubbing and stockpiling of topsoil. - Bulk earthworks for the installation of sedimentation pond. - Construction of access road including earthworks, pavements, kerb and gutter and fencing. - Relocation of RMS signage and ITS system. - Foundations and sealing of surfaces. - Installation of laydown and storage areas/facilities. - Construction of water treatment plant. - Installation of fuel storage and re-fuelling bay. - Construction of internal haul roads including access road to tunnel shaft site to the east of the compound. Construction Kingsgrove South (C2) Construction Compound Site The Kingsgrove South construction compound would be located to the south of existing M5 East Motorway, within Beverly Grove Park, Kingsgrove. The construction compound would primarily be used to service the construction of the western surface worksite. - Cut and cover/dive structures: earthworks, piling, installation of capping beams and roof structure. - Construction of bridge structures and retaining walls. - Roads and ramps: earthworks, road widening, pavements, retaining walls, barriers, road furniture, ITS. Establishment - Installation of site fencing, hoarding and any necessary noise walls along the boundary of the compound, lighting, and signage, including piling if required. - Foundations and sealing of surfaces. - Installation of laydown and storage areas/facilities. Construction Commercial Road (C3) Construction Compound Site - Reconfiguration of traffic access. - Surface road works. - Construction of the permanent Kingsgrove South motorway operations complex (MOC1). The Commercial Road construction compound would be located between Tallawalla Street, Kingsgrove and Commercial Road, Kingsgrove, on the southern side of the Motorway. Establishment - Installation of site fencing, hoarding and any necessary noise walls along the boundary of the compound, lighting, and signage, including piling if required. - Demolition of existing structures. - Clearing and grubbing and stockpiling of topsoil. - Earthworks and spoil removal. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 14 of 48

15 Construction Contaminated Land Site Description The site would service surface infrastructure construction works between the western limit of works and the tunnel portals. Bexley Road North Compound (C4) Key Work Activities with the Potential to Expose Contamination - Construction of access road including earthworks, pavements, kerb and gutter and fencing. - Foundations and sealing of surfaces. - Piling for crane pad and footings. - Installation of laydown and storage areas/facilities. - Installation of spoil shed and construction water treatment plant. - Installation of fuel storage and re-fuelling bay. - Installation of electrical substation including cabling and earthing. - Installation of mains water supply to site. - Construction of on-site car parking. - Installation of any additional plant and equipment required for construction activities. - Traffic control works and establishment of the access point to Commercial Road. Construction - Operation of staff amenities, parking and site infrastructure generally - Operation of workshop - Deliveries, including concrete and shotcrete - Stockpile/laydown - Storage of plant and equipment not in use - Storage of fuels and chemicals - Shaft excavation - Launch of a road header - Tunnelling: excavation, blasting and profiling (as per EPL) - Spoil management and offsite removal utilising spoil shed - Tunnel support activities including provision of ventilation, water treatment plant, water supply, electricity supply - Tunnel fit out: rock sawing and hammering, permanent services and finishes, paving, install road furniture. The Bexley Road North construction compound is located on the western side of Bexley Road, Kingsgrove and north of the M5 East motorway. It is located within an area of fenced vacant land bound by the intersection of Bexley Road and Poole Street, Kingsgrove in the north, Bexley Road, Kingsgrove in the east, the M5 East motorway in the south and residential properties along Flatrock Road and Jones Avenue, Kingsgrove on the west. An acoustic shed no higher than 20m will be established containing the shaft entry, a spoil stockpile area and sufficient space for two heavy vehicles to be loaded with spoil. Establishment - Realign the existing shared pedestrian and bicycle path. - Installation of site fencing, hoarding and any necessary noise walls along the boundary of the compound, lighting, and signage, including piling if required. - Demolition of existing structures. - Clearing and grubbing and stockpiling of topsoil. - Earthworks and spoil removal. - Preparation earthworks to accommodate the site layout. - Foundations and sealing of surfaces. - Piling for crane pad and footings. - Installation of laydown and storage areas/facilities. - Installation of spoil shed and construction water treatment plant. - Construction of on-site car park. - Installation of electrical substation including cabling and earthing. - Relocation of existing monitoring station. - Installation of mains water supply to site. Construction Bexley South (C5) Construction Compound Site - Shaft excavation. - Launch of road headers. - Tunnelling: excavation, blasting and profiling. - Spoil management and offsite removal utilising spoil shed. - Tunnel support activities including provision of ventilation, water treatment plant, water supply, electricity supply. - Tunnel fit out: rock sawing and hammering, permanent services and finishes, paving, install road furniture. The Bexley Road South construction compound is located within Kingsgrove Avenue Reserve on the western side of Bexley Road, Kingsgrove to the south of the M5 East Motorway tunnel in an area of Establishment - Installation of site fencing, hoarding and any necessary noise walls along the boundary of the compound, lighting, and signage, including piling if required. - Demolition of existing structures. - Clearing and grubbing, tree removal and stockpiling of topsoil and mulch. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 15 of 48

16 Construction Contaminated Land Site Description open space, currently used for public recreation. The site would be used for tunnelling support during construction and Bexley Road South motorway operations complex (MOC2) for operation. An acoustic shed no higher than 20m will be established containing the shaft entry, a spoil stockpile area and sufficient space for two heavy vehicles to be loaded with spoil. Key Work Activities with the Potential to Expose Contamination - Earthworks and spoil removal. - Preparation earthworks to accommodate the site layout. - Foundations and sealing of surfaces. - Piling for crane pad and footings. - Installation of laydown and storage areas/facilities. - Installation of spoil shed and construction water treatment plant. - Construction of on-site car park. - Installation of electrical substation including cabling and earthing. - Installation of mains water supply to site. Construction Bexley East (C6) Construction Compound Site The Bexley Road East construction compound would be located on the eastern side of Bexley Road, Earlwood south of the intersection with Wolli Avenue on land currently used to support the operation of the M5 East Motorway. The site will be used mainly for car parking and administrative support activities for the Bexley Road North construction compound (C4) and Bexley Road South compound (C5). Arncliffe (C7) Construction Compound Site - Launch of road headers. - Tunnelling: excavation, blasting and profiling. - Spoil management and offsite removal utilising spoil shed. - Tunnel support activities including provision of ventilation, water treatment plant, water and electrical supplies. - Tunnel fit out: rock sawing and hammering, permanent services and finishes, paving, install road furniture. - Construction of permanent operational facilities including emergency smoke extraction facility, operational water treatment facility, electricity distribution substation. Establishment - Installation of site fencing, hoarding and any necessary noise walls along the boundary of the compound, lighting, and signage, including piling if required. - Clearing and grubbing and stockpiling of topsoil. - Earthworks and spoil removal. - Preparation earthworks to accommodate the site layout. - Foundations and sealing of surfaces. - Installation of laydown and storage areas/facilities. - Installation of mains water supply to site. - Construction of on-site car park. Construction The construction activities, as outlined in the Ancillary Facilities Management Plan are not anticipated to include ground disturbing work. The Arncliffe construction compound is located within the Kogarah Golf Course within a recreational area south of Marsh Street, Arncliffe and east of the junction with the M5 East Motorway. The site is for civil construction activities and for tunnelling support including laydown areas, a construction water treatment plant, spoil stockpile, non-acoustic shed, access shaft, staff and administrative facilities, laydown areas, construction water treatment plant, non-acoustic shed for shaft and stockpile During operation, the site would be occupied by the Arncliffe motorway operations complex (MOC3), including a ventilation facility and water treatment plant. Establishment - Installation of site fencing, hoarding and any necessary noise walls along the boundary of the compound, lighting, and signage, including piling if required. - Clearing and grubbing, tree removal and stockpiling of topsoil and mulch. - Earthworks and spoil removal. - Construction of access road including earthworks, pavements, kerb and gutter and fencing. - Dewater and backfill existing golf course ponds. - Preparation earthworks to accommodate site layout. - Foundations and sealing of surfaces. - Pads for piling rigs and cranes. - Installation of laydown and storage areas/facilities. - Installation of spoil shed and construction water treatment plant. - Installation of fuel storage and re-fuelling bay. - Installation of electrical substation including cabling and earthing. - Installation of mains water supply to site. - Construction of on-site car parking. Construction - Excavation of temporary decline access tunnel and shaft including: Piling Use of excavators, rock-hammers and road headers Spoil removal - Excavation and lining of permanent shaft. - Launch of road headers. - Tunnelling: excavation, blasting and profiling. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 16 of 48

17 Construction Contaminated Land Site Description Canal Road Compound (C8) The Canal Road construction compound is located within the St Peters interchange site at 1 Canal Road and 316 Princes Highway, St Peters. The construction compound supports tunnelling and civil infrastructure activities. During operation, the site would be occupied by the St Peters motorway operations complex (MOC4), including the St Peters ventilation outlet. Key Work Activities with the Potential to Expose Contamination - Spoil management and offsite removal utilising spoil shed. - Tunnel support activities including provision of ventilation, water treatment plant, water and electrical supplies. - Tunnel fit out: rock sawing and hammering, permanent services and finishes, paving, install road furniture. - Construction of permanent operational facilities including emergency smoke extraction facility, operational water treatment facility, electricity distribution substation. Establishment - Survey to install control and pick up existing levels - Installation of environmental controls including: Further site investigations Erosion and sedimentation control Delineation of sensitive areas - Installation of site fencing, hoarding and any necessary noise walls along the boundary of the compound, lighting, and signage, including piling if required - Embankment stabilisation - Clearing and grubbing and stockpiling of topsoil and mulch - Earthworks and spoil removal - Materials testing, classification and removal of unsuitable materials off site - Construction of access roads including earthworks, pavements, kerb and gutter and fencing - Protection of existing services, utilities and relocations, disconnections and connections where required - Preparation earthworks to accommodate site layout - Foundations and sealing of surfaces - Service investigation including potholing, hand digging, and excavator works. - Demolition of existing buildings including removal of any concrete slabs or support structures including offsite disposal of waste - Construction of piling platforms including earthworks and ground improvement - Piling for crane pad and footings - Installation of staff amenity structures and fit out - Installation of workshop structures and fit out - Installation of laydown and storage areas/facilities - Installation of spoil shed and construction water treatment plant - Installation of fuel storage and re-fuelling bay - Installation of electrical substation including cabling and earthing - Construction of on-site car parking - Installation of any additional plant and equipment required for construction activities - Traffic control works establishment of gates and access points to the Princes Highway and Canal Road. This includes modification to a set of existing signals on Canal Road at the entrance to the Canal Road Intermodal Terminal Construction - Deliveries of all materials, including shotcrete and concrete and reinforcement - Operation of workshop - Stockpile/laydown - Storage of plant and equipment not in use - Storage of fuels and chemicals - Excavation of temporary decline access tunnel, including: Piling Use of excavators, rock-hammers and road headers Use of cranes Spoil removal Concrete work - Launch of road headers - Tunnelling: excavation, blasting and profiling (as per EPL) - Spoil management and offsite removal utilising spoil shed - Tunnel support activities including provision of ventilation, water treatment plant, water and electrical supplies WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 17 of 48

18 Construction Contaminated Land Site Description Campbell Road Compound (C9) The Campbell Road construction compound would be located on the southern side of Campbell Road between Woodley Street and Harber Street, St Peters. The construction compound is to be situated on land which currently comprises residential dwellings and commercial and industrial businesses. The compound would be mainly used to support construction of the St Peters interchange and local road upgrades. The construction compound would include a car park for approximately 260 light vehicles, laydown and storage areas, a stockpile, fuel storage, a sedimentation pond and site offices. Key Work Activities with the Potential to Expose Contamination - Tunnel fit out: rock sawing and hammering, permanent services and finishes, paving, install road furniture - Construction of permanent operational facilities including emergency smoke extraction facility, operational water treatment facility, electricity distribution substation. - Removal of site amenities, offices, plant and equipment, sheds and fencing. - Rehabilitation and landscaping of residual land, including backfilling of temporary tunnel access dive. - Excavation of the cut and cover portal structure - Installation of ground anchors and shotcrete - Installation of precast concrete girders, slabs and columns - Concrete works including installation of formwork, steelfixing, and pouring concrete - Installation of a tower crane and other crane works - Drainage and pavement works - Finishing works including landscaping, kerbs, gutters, linemarking, signage, lighting, asphalting - Construction of building facilities Establishment - Demolition of existing buildings - Establishment of construction compound fencing and hoarding - Vegetation clearance - Construction of hardstands - Installation of sediment and erosion control measures - Installation of site offices and crib rooms - Construction of access roads and security - Set up of spoil sheds and support equipment - Set up of construction monitoring equipment - Relocation of utilities. Construction Local Road upgrades: Removal of existing road pavements, as required - Installation of the drainage and utility infrastructure - Installation of road base, lighting, kerb and guttering, verges, medians, and new jersey barriers - Earthworks and excavation - Spoil stockpiling and removal - Installation of final asphalting layer - Sign installation and street lighting St Peters Interchange - Bulk excavation and material disposal - Foundation works to pavements including piling - Structural and flexible pavement construction to St Peters interchange - Construction of the on-and off-ramps - Construction of the St Peters interchange bridges including the Campbell Road pedestrian and cycle bridge, local road upgrades and shared paths - Construction of carriageways - Tie-in with existing roads onto Campbell Road - Construction of retaining walls and landscaping. Finishing works, including asphalting, linemarking, signage installation and landscaping - Demobilisation and removal of construction facilities - Testing and commissioning testing of plant and equipment - Landscaping - Rehabilitation of affected areas - Post-construction condition surveys - Removal of construction environmental controls - Removal of construction ancillary facility related traffic signage. Landfill Closure Compound (C10) 2 2 This site will be managed under the LCMP, required under CoA B32 WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 18 of 48

19 Construction Contaminated Land Site Description The Landfill Closure construction compound is located on the southern side of Campbell Road, St Peters and would be used to support closure of the Alexandria Landfill site. The compound would include site offices, amenities, and laydown and material storage areas. The constructed containment mound would contain approximately 70,000 cubic metres of material excavated from a stockpile in the north-western corner of the Alexandria Landfill site. Key Work Activities with the Potential to Expose Contamination Establishment - Site establishment for construction activities associated with the landfill closure works. - Vegetation clearance, topsoil stripping and spreading stockpile. Mulched vegetation would be stockpiled for later reuse in site rehabilitation and landscaping works - Demolition of buildings and other infrastructure - Install Erosion and sedimentation control devices and site areas - Construct hardstand areas, including importing, placing spreading of gravel as well as surfacing works - Install site offices and sheds - Car park construction - Connection of services and utilities such as water, sewer, power etc - Erection of decking and walkways, construction of concrete paths - Installation of site security devices - Installation of road construction drainage infrastructure such as access roads, site fencing and barriers Construction and Landfill Closure Works as well as roadworks - Relocation of utilities - Site wide vegetation removal - Installation of erosion and sedimentation devices - Removal of topsoil - - Installation of a cut off wall to minimise inflow from the Botany Sands aquifer - Bulk works to produce the final landform - Installation of a capping layer including preparatory works including clearing and levelling the ground surface. - Upgrade of the existing leachate treatment plant, installation of new leachate drainage collection system and decommissioning existing leachate treatment. - Construction of a new leachate treatment plant management system - Installation of a landfill gas collection and management system - Installation of a groundwater management system. - Landscaping and demobilisation. This site office will also be used during the road construction and finishing works: - Cut and fill foundation preparation - Installation of permanent drainage systems including pumping infrastructure - Pavement construction - Driven piles and concrete slab - Finishing works including line marking, erection of signs, street lighting, vegetation, safety barriers and verge - Installation of drainage systems and water quality basins Burrows Road Compound (C11) The Burrows Road construction compound would be located on the south-western corner of Campbell Road and Burrows Road, St Peters. The compound would mainly be used to support civil infrastructure construction activities, including construction of the St Peters interchange and the local road upgrades. The Burrows Road construction compound site would be used for the Burrows Road motorway operations complex (MOC5), including the New M5 motorway control centre, for operations. Establishment - Site establishment to support construction activities associated with the St Peters Interchange and local road upgrades - Demolition of buildings - Construction of hardstand for overflow car parking - Creation of a laydown area and storage of materials for local road upgrades Construction - Construction of the St Peters Interchange and local road upgrades - Construction of Burrows Road motorway operations complex (MOC5) - Demobilisation and rehabilitation Campbell Road Bridge Compound (C12) WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 19 of 48

20 Construction Contaminated Land Site Description Key Work Activities with the Potential to Expose Contamination The Campbell Road bridge construction compound would be located on the south-eastern side of Burrows Road, St Peters opposite Campbell Road on land currently used for commercial business purposes. The compound would be mainly used for the construction of a new bridge across the Alexandra Canal as part of the Campbell Road extension. The compound would include a car park, laydown area, crib area and ablutions facilities. Gardeners Road Bridge Compound (C13) Establishment - Site establishment for the construction activities associated with the Campbell Road bridge (vehicle) and Campbell Road pedestrian and cycle bridge across the Alexandra Canal - Demolition of buildings - Utilities relocation Construction - Stockpiling of materials for construction works - Support for construction of new bridges across Alexandra Canal as part of the local road upgrades - Works to enable tie in with Campbell Road upgrade works - Laydown and storage area for plant and equipment, and permanent materials for bridge works, including precast concrete - Finishing works including landscaping asphalting, line marking and signage installation The Gardeners Road Bridge construction compound (C13) is located on the southern side of Burrows Road, St Peters currently used for commercial business purposes. The Gardeners Road bridge construction compound would be used to service the construction of a bridge over the Alexandra Canal, which would connect the St Peters interchange directly with Gardeners Road, Mascot. The compound would include a car park, laydown area, crib area and ablutions facilities. The site would include a crib hut, laydown area and car parking. Establishment - Site establishment for construction activities associated with the Gardeners Road bridge - Demolition of buildings - Relocation of utilities Construction - Tie-in of the Gardeners Road bridge with the local road upgrades - Storage of bridge construction plant and equipment - Stockpiling of construction materials - Laydown and storage of bridge materials, such as precast concrete - Storage of temporary access platforms for bridge works (western side of the Alexandra Canal) - Pre-assembly of segments, heavy lifts and associated bridge and local road upgrade construction - Finishing works, including landscaping, asphalting, line marking and signage C14 Sydney Park Compound (C14) The Sydney Park construction compound would be located on the northern side of Campbell Road in Sydney Park, St Peters on an area of open space used for public recreation. The construction compound would be used to service the construction of pedestrian and cycling facilities associated with the local road upgrades, including the Campbell Road pedestrian and cycle bridge over Campbell Road. The land required for the Sydney Park construction compound would be used temporarily throughout construction only and would be rehabilitated at the completion of construction, with the exception of the areas of land required permanently for the footprint of the bridge and pedestrian and cycle paths. The compound would include a car park, laydown area, crib area and ablutions facilities. Establishment - Clearance of vegetation - Construction of hardstand for car parking - Creation of a laydown area and hardstand Construction - Construction activities associated with the pedestrian and cycle bridge over Campbell Road - Construction of the bridge over Campbell Road - Construction of a shared pedestrian and cycle path in Sydney Park - plant and equipment laydown and storage area WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 20 of 48

21 Construction Contaminated Land Site Description Key Work Activities with the Potential to Expose Contamination Alexandra Canal Areas of the Canal adjacent to Campbell Road bridge construction compound (C12), St Peters and Gardeners Road bridge construction compound (C13), Alexandria and areas in the vicinity of surface water discharge points Construction - Construction activities associated with the upgrade of surface water discharge points into the Canal - Construction activities associate with the bridges over the Canal Temporary Construction Power Enabling Works The work will be carried out along 5 alignments: Rockdale to Kogarah Golf Course, Arncliffe Commercial Road, Kingsgrove Garema Circuit, Kingsgrove May Street, Mary St to Canal Rd St Peters Campsie to Poole St, Kingsgrove Each route would be located within the road reserve and adjacent footpaths. Establishment This proposal comprises installation of cabling and related fixtures to connect Ausgrid utilities from the existing network to the various proposed construction compounds along the alignment of the New M5 project. Works will involve the following construction methods: HDD (Horizontal Directional Drilling) Trenching Pipe jacking Non-destructive excavation work including potholing and slit trenches. Road Construction Areas Areas within the Local Road Upgrades outside of the Construction compounds including along Campbell Rd, Campbell Street, Euston Road, Burrows Road, Bourke Rd, Gardeners Rd and Ricketty St in St Peters and Alexandria. Construction - Construction activities associated with the construction of the local road upgrades - Construction activities associated with bridges and roads at St Peters Interchange WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 21 of 48

22 Construction Contaminated Land 5. Management Process The contamination assessment process for the Project and provision of recommendations for subsequent remediation and/or management will be completed with reference to relevant State and National guidance documents, endorsed under the Contaminated Land Management Act 1997 (the CLM Act), including, but not limited to: Guidelines for the NSW Auditor Scheme (2nd Edition), Department of Environment and Conservation NSW (DEC 2006); Guidelines for Consultants Reporting on Contaminated Sites, Office of Environment and Heritage, (OEH 2011); and National Environment Protection (Assessment of Site Contamination) Measure (NEPM) 1999, National Environment Protection Council (NEPC 2013). EPA 1995, Contaminated Sites: Sampling Design Guidelines. NSW EPA, Sydney. This approach is consistent with the Secretary s Environmental Assessment Requirements (SEARs) issued for the Project issued during The SEARs include that the following be completed: An assessment of contaminated sites in accordance with the guidelines made or approved under section 105 of the Contaminated Land Management Act Figure 1 presents the proposed Contamination Assessment and Management Process Flow Chart to be adopted for the Project to achieve the objectives stated in Section 1.2. The steps presented in Figure 1 are described in the following sections. Prior to endorsement for implementation of the CCLMP by the DP&E, CoA D54 requires consultation with local Councils and the NSW EPA on the proposed management strategy. CDS-JV has elected to also seek the independent technical review of the CCLMP by their appointed NSW EPA accredited Site Auditor prior to external stakeholder consultation and review. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 22 of 48

23 Construction Contaminated Land Figure 1: Contamination Assessment and Management Process Flow Chart 1 Assumed to include: City of Sydney Council, Marrickville Council, Rockdale City Council, City of Cantebury Council and Hurstville City Council. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 23 of 48

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25 Construction Contaminated Land 5.1 Phase 1 ESA A site specific Phase 1 Environmental Site Assessment (ESA) is required to determine whether potential site contamination poses an actual or potential risk to human health and the environment, either on or off the site, to determine if additional intrusive investigations are required. A thorough understanding of the contaminants of concern would be ascertained, including whether potentially contaminated soil is in an area of cut / fill or is likely to be unsuitable for construction purposes. The outcomes of the Phase 1 ESA will be presented to the CDS-JV appointed NSW EPA Site Auditor for review. Where no further action is proposed sign-off by the Site Auditor will be sought prior to commencement of works on land identified as potentially contaminated. 5.2 Phase 2 Sampling, Analytical and Quality Plan (SAQP) If intrusive investigations are deemed necessary a Phase 2 Sampling Analysis and Quality Plan (SAQP) would be prepared, as part of the Phase 1 ESA, to assess the nature and extent of potential contamination for review by the Site Auditor. A soil and/or groundwater SAQP should be developed to inform the Phase 2 ESA in accordance with the NSW EPA (1995) Sampling Design Guidelines or activity specific guidelines. 5.3 Phase 2 ESA A Phase 2 ESA is required when the results of Phase 1 ESA determine that the site has or is likely to be contaminated based on a review of past land use. Where a Phase 2 ESA is required it will be completed to a level which is sufficient to inform remediation and or management approaches appropriate to the proposed land uses during and post construction. As noted previously the assessment process outlined in the NEPM will be followed when determining whether sites within the Project footprint are contaminated. A Phase 2 ESA report will be prepared which includes: Identification of the type, extent and concentration of contaminants of concern. Information on the potential effects of contaminants on public health and the environment. Off-site impacts on soil, sediment and biota (where applicable). The adequacy and completeness of all information available to be used in making decisions on remediation or site management. An assessment of whether the NSW EPA should be notified under s60 of the CLM Act. Identification of preferred options for remediation and/or site management (i.e. whether the contamination is in an area of cut or fill; preferentially either to be retained in situ, reused within the Project boundary, or disposed off-site). If removal of the contaminated material from site is a remediation option, analysis of the material and classification under the Waste Classification Guidelines Part 1: Classifying waste (NSW EPA, 2014) and specification that the movement of all potentially contaminated material will be tracked and recorded as per the Construction Waste and Resource Sub Plan (M5N-ES-PLN- PWD-0008) The Phase 2 ESA report will be presented to the Site Auditor for review. Where necessary, the Phase 2 ESA will include a recommendation for the development of a Remediation Action Plan (RAP). Where a RAP is not deemed necessary, a Contamination Management Summary (CLMS) may be prepared to outline any management actions that are required as a result of the Phase 2 ESA and included in the relevant Construction Area Plan (CAP) and Risk Assessment. The management summary may also be reviewed by the Site Auditor prior to its inclusion in the CAP. 5.4 Remediation Action Plan (RAP) A Remediation Action Plan (RAP) would be developed to establish the remediation objectives and details the strategy for sites identified as requiring remediation to make them suitable for their intended construction and future land use. The RAP will demonstrate how the risks of contamination will be reduced to within acceptable levels and prevent migration within the site as well as off-site. Where required, RAPs for the Project will: WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 25 of 48

26 Construction Contaminated Land Set remediation goals that ensure the remediated site will be suitable for the proposed land use and will pose no unacceptable risk to human health or to the environment; Document requirements to be implemented to reduce risks to workers during remediation; and Outline sampling requirements to validate that the remediation strategy has been successful. RAPs will be prepared and submitted to the Site Auditor for review prior to commencement of remediation works. 5.5 Remediation Validation Report (RVR) A remediation validation report is required to confirm that the remediation goals specified under the RAP have been achieved. The report will detail: Description of remedial action undertaken The validation results of the remediation action undertaken on the site. Confirmation that all regulatory requirements, where applicable, have been met. Identification of any residual contamination with discussion of any associated risks and an outline of control measures required. RVRs will be submitted to the Site Auditor for review and approval. Where residual contamination is retained on-site the RVR may be accompanied by a Long Term Site Environmental Management Plan (LT-SEMP) (Section 5.6). 5.6 Long Term Site Environmental (LT-SEMP) An LT-SEMP may be required to ensure: the environment is protected; site users are not exposed to contamination; and the site is suitable for its intended land use where: Complete clean-up of contamination affecting a site is not practicable; Contaminants are being capped or contained on-site; and/or Remediation is likely to cause a greater adverse impact than would occur if the site were left undisturbed. An LT-SEMP would ensure activities which could potentially result in exposure of future land users to the residual contaminated soils and/or groundwater beneath the site are precluded or appropriately limited / controlled. Where required, an LT-SEMP would be prepared to succinctly describe the nature and location of contamination at a site. It would state what the objectives of the plan are, how contaminants are to be managed, who would be responsible for the plan s implementation and over what time frame actions specified in the plan would take place. In addition an LT-SEMP would document the following: Administrative controls; Program of inspections and maintenance; Protocols on intrusive site works; Protocols for on-site use and limitations; List roles and responsibilities; Contact details; and Emergency response plan. The LT-SEMP would be reviewed by the Site Auditor. The Auditor Guidelines (DEC NSW, 2006) also identify several specific requirements to be addressed in the preparation of the LT-SEMP. These include that the implementation of a LT-SEMP must not be specified by a Site Auditor as a condition on a Site Audit Statement, nor accepted by the Auditor as a means of managing contamination of a site, unless the following conditions have been met: The LT-SEMP has been reviewed by the Auditor; The LT-SEMP can reasonably be made to be legally enforceable, for example because compliance with it is a requirement of a Notice under the CLM Act or of development consent conditions issued by the relevant planning authority. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 26 of 48

27 Construction Contaminated Land There will be appropriate public notification of any restrictions applying to the land to ensure that potential purchasers or other interested individuals are aware of the restrictions, for example appropriate notations on a planning certificate issued under Section 149(2) of the EP&A Act 1979 or a covenant registered on the title to the land under 88B of the Conveyancing Act 1919; There is no off-site migration of contamination from the site which is the subject of the Site Audit. Where there is off-site migration or its potential, that contamination within the site is managed or monitored so that it does not present an unacceptable risk to either the on-site or off-site environments. 5.7 Site Audit Report (SAR) and Site Audit Statement (SAS) As required under CoA B31 : where land is remediated, a final Site Audit Statement(s) must be prepared by an accredited Site Auditor, certifying that the contaminated disturbed areas have been remediated to a standard consistent with the intended land use. The final Site Audit Statement must be submitted to the Secretary and relevant councils prior to operation of the SSl, unless otherwise agreed to by the Secretary. The SAS cannot be prepared without completion of the SAR report, which involves the review and consideration of all the steps and associated documents cited under this CCLMP. The outcome of the Site Audit process, i.e. the statement of site suitability on the SAS cannot be pre-empted and requires all the steps under the CCLMP to be completed. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 27 of 48

28 Construction Contaminated Land 6. Implementation 6.1 Roles and Responsibilities The roles and responsibilities of key CDS-JV personnel with respect to contamination contaminated land management are detailed in Table 5. Table 5: CDS-JV Personnel and Responsibilities for Contaminated Land Management Person Project Director Support Services Director Environment and Sustainability Manager Design Manager Commercial Director Construction Director(s) Construction Supervisors and Foremen Environment Advisors Project and Site Engineers Responsibilities Managing the delivery of the New M5 Works including ultimate responsibility for the implementation of contamination land management; and Contractor s Principal Representative. The environmental responsibilities of the CDS-JV Support Services Director include, but not limited to: o Provide environmental oversight, direction and leadership regarding the environmental management of the project. Oversee the implementation of all contamination management strategies; Environmental reporting and monitoring (EPL); NSW EPA liaison; Track and report contamination elements against sustainability targets. Ensure testing of contaminated soil is conducted by a trained and competent person, and a management strategy developed. Ensure contaminated soil is handled, stockpiled, reused and/or disposed of as per the project's contamination management strategy. Ensure relevant contamination management requirements are addressed in design development. Ensure that relevant contamination management requirements are considered in procuring materials and services. Manage the delivery of the construction process in relation to contamination management across all sites in conjunction with the Environment Manager. On-ground implementation and adherence with contamination management requirements. Ensure all movement of contaminated materials is tracked as detailed in the Construction Waste and Resource Sub Plan Ensure water runoff from contaminated land and stockpiles is contained, treated or disposed to ensure there is no pollution of land or waterways. Ensure all vehicles, plant and other machinery that have been in contact with contaminated soil are decontaminated prior to leaving site. Stop work whenever unexpected contaminated materials are discovered or suspected and implement Project or site specific unexpected finds protocol to ensure adequate controls are put in place to undertake the work. Conduct task observations as per Project schedule to ensure ongoing effectiveness of environmental control measures. Manage the on-ground application of contamination management measures during construction; and Monitor and report on contamination management during construction. Implement contamination management activities during construction works. Ensure contaminated land risks are considered as part of the development of Construction Area Plans (CAPs). Ensure Work Packs include relevant environmental control information including a site specific plans prepared under the CCLMP where relevant. Notify the Supervisor and/or Environment Manager/Representative immediately if unexpected contaminated material is suspected or discovered. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 28 of 48

29 Construction Contaminated Land Further details on roles and responsibilities are provided in the CEMP. 6.2 Training and Awareness CDS will ensure that all employees and contractors involved in the Project receive the appropriate training to ensure they understand and are aware of their environmental responsibilities and the measures to be implemented to protect the environment and ensure compliance with statutory approvals. Training and competency measures for contamination management for the Project will include: Ensuring all staff and contractors receive a site-specific induction including contamination procedures; Familiarisation with the content of applicable management plans, including the unexpected finds procedure(s), RAPs and/or long-term site environmental management plans; Ensuring that all contractors and operators on the site have the appropriate licences, permits to undertake the work; Maintaining records of all training, inductions, competencies, licences and permits; and, Ensuring that personnel who are required or may be likely to be required to work with contaminated soil understand the key provisions of the POEO (Waste) Regulation as the basis for the waste management procedure under this plan. Refer to the training requirements in the CEMP Part B Element 7 Training and Competency. 6.3 Consultation This Plan is being provided to relevant stakeholders, including the NSW EPA and relevant councils (including the City of Sydney Council, Marrickville Council, Rockdale City Council, City of Canterbury Council and Hurstville City Council), as requried under CoA D54. It provides detail of how CDS-JV proposes to manage and mitigate potential contamiantion issues identified in the EIS and raised in the submissions received. This consultation is intended to assist in development and finalisation of the Plan. Evidence of consultation, including where relevant issues have been addressed within this Plan, will be included in correspondence to DP&E accompanying this plan. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 29 of 48

30 Construction Contaminated Land 7. Operational Mitigation and Management Actions 7.1 Environmental Plans and Procedures This Plan refers to the following CDS-JV environmental procedures: Manage Soil and Water Procedure (M5N-ES-PRC-PWD-0035) Manage Contaminated Land Procedure (M5N-ES-PRC-PWD-0036) Manage Work with Asbestos Procedure (M5N-ES-GUI-PWD-0001) Manage Acid Sulfate Soils Procedure (M5N-ES-PRC-PWD-0038) Manage Hazardous Substances Procedure (M5N-ES-PRC-PWD-0041) Manage Waste Procedure (M5N-ES-PRC-PWD-0044). Other procedures will be developed during project construction as the need arises. The following plans are integral to the implementation of this Plan: Ancillary Sites (M5N-ES-PLN-PWD-0026) CEMP (M5N-EN-PLN-PWD-0001) and sub-plans including: o Construction Soil & Water Quality Sub-Plan (M5N-ES-PLN-PWD-0005); and o Waste and Resource (M5N-ES-PLN-PWD-0008). 7.2 Mitigation and Management Measures Measures to manage and minimise the human health and/or environmental impacts associated with disturbance of contaminated land are to be implemented prior to and during works. Elimination of the hazard is the first preference of control, followed by engineering, then administrative controls. Controls proposed to be used on this Project are identified in Table 6 below. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 30 of 48

31 Construction Contaminated Land Table 6: Project controls associated with disturbance of contaminated land No. Management Measures and Mitigation Strategies Comment Reference Reference CLM01 CLM02 CLM03 Project induction and targeted toolbox talks will include discussion of known sites of contamination and the procedure to follow if contamination is suspected. Follow the Manage Contaminated Land Procedure (M5N-ES-PRC-PWD-0036) if previously unknown contaminated land, spoil or fill is encountered. Where potentially contaminated material is discovered, notification to relevant Project and agency representatives will be undertaken Areas of known or likely contaminated land will be assessed and managed in accordance with the management process (Section 5) and the requirements of a RAP or LT-SEMP developed for the site as required under the management process. Construction Area Plan (CAP) will include reference to areas of known or potential contamination (summarised in Appendix B) and will be presented at inductions. Specific information, including details on the procedure(s) to manage the unexpected discovery of contaminated land, will be included in the Project induction. Toolboxes will be held to provide specific information on the management of contaminated soil or groundwater for workers working in the vicinity of known or suspected contaminated sites. Details of additional environmental measures included in RAPs and/or LT-SEMPs will also be tool boxed. Where contaminated material is unexpectedly discovered, works in the vicinity will cease (or modified when it is determined there would be no human health impacts) and the affected area isolated from workers and other persons with a visual barrier that would cause minimal disturbance to the soil (e.g. star pickets with flagging). The Environment Manager shall be notified and works will not recommence until the requirements of the Unexpected Discovery Contamination Procedure (M5N-ES-PRC-PWD-0032) and or the RAP or LT-SEMP are met (including the installation of environmental controls). Prior to working in areas of known or likely contamination, the management process of assessment of contamination and development of appropriate remediation and/or management measures in accordance with legislative requirements and guidelines must be followed. Works on sites of known contamination must be undertaken in accordance with the site specific RAP which will include details of environmental controls for remediation /contamination management works. Work in areas of known contaminated soil should be planned for periods when rain is not anticipated. Cut-off drains, banks or bunds should be provided around excavations to help control the ingress and egress of surface and groundwater, as per the Construction Soil and Water Quality Sub Plan (M5N-ES-PLN- PWD-0005) and Site Specific Erosion and Sediment Control Plans. Good Practice CM04 CM10 CM03 Details of properties identified with a high or medium risk of potential contamination (Appendix B) and associated assessment documents prepared under this Plan Manage Contaminated Land Procedure (M5N-ES-PRC-PWD- 0036) RAPs / LT-SEMPs as developed/required Manage Contaminated Land Procedure (M5N-ES-PRC-PWD- 0036) RAPs / LT-SEMPs as developed/required This Plan RAPs / LT-SEMPs WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 31 of 48

32 Construction Contaminated Land No. Management Measures and Mitigation Strategies Comment Reference Reference CLM04 As part of the Phase 1 ESA assessment process a dangerous goods search of the Safework NSW records for licenced dangerous goods will be undertaken at each site. Where it is established that groundwater may be encountered during works on known contaminated sites, dewatering of excavations will be managed in accordance with the requirements of the RAP and EWMS. Phase 1 ESA to be prepared under this CCLMP CM08 Phase 1 ESA to be prepared under this CCLMP CLM05 CLM06 Groundwater seepage into excavations will be controlled in accordance with measures identified in Construction Soil and Water Quality Sub Plan (M5N-ES-PLN-PWD-0005). The site assessment completed as part of the Management Process outlined in Section 5will identify whether groundwater is likely to be encountered during works on known contaminated sites. The RAP developed for known or potentially contaminated sites will include measures for the management of potentially contaminated groundwater, specific to that site and the contaminants of potential concern. Where immediate off-site disposal of contaminated material is not possible, the locations proposed for the temporary stockpiling of contaminated material will managed in accordance with the RAP or CEMP includes procedures to manage containment, treatment, transfer and / or treatment of groundwater and opportunities for its reuse onsite or disposal off-site. The Manage Soil and Water Procedure (M5N- ES-PRC-PWD-0035) and the Manage Contaminated Land Procedure (M5N-ES-PRC-PWD-0036) identify the process to be followed where potentially contaminated groundwater is encountered. Procedures include monitoring / testing of seepage water collected from the excavations for relevant chemicals of concern prior to on-site treatment and reuse or off-site disposal. Other general groundwater management measures are outlined in CEMP. Where required under the Management Process the RAP will identify the potential for interaction with contaminated groundwater and site specific means for its management. Where stockpiling of contaminated soil is required under a RAP developed for a site: Divert surface run-off away from stockpile sites (including contaminated material stockpiles) Capture and manage any surface runoff exposed to contaminated land/ material Locate stockpiles on concrete slabs or polythene or low-density polyethylene sheet (at least two layers of 0.25mm thickness) Install controls to prevent access by unauthorised personnel. Cover stockpile with polythene sheets or tarpaulins and anchoring objects (with no sharp edges) to prevent wind blow and potential erosion, where appropriate. Install straw bales and/or silt fences around the perimeter of the contaminated soil stockpile to maintain separation between contaminated and non-contaminated soil. Details regarding diversion and capture of surface water will also be included on site-specific erosion and sediment control plans as per the Construction Soil and Water Quality Sub Plan (M5N-ES-PLN-PWD-0005). CSWQSP WQPMP CM12 Phase 2 ESA to be prepared under this CCLMP RAPs as required RAP Construction Waste and Resource Sub-Plan (M5N-ES-PLN-PWD-0008) WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 32 of 48

33 Construction Contaminated Land No. Management Measures and Mitigation Strategies Comment Reference Reference CLM07 CLM08 CLM09 CLM10 CLM11 CLM12 Where asbestos is encountered in buildings / structures nominated for demolition, a contractor qualified to handle asbestos will be engaged to undertake its removal prior to demolition. Bunding and spill management must be undertaken according to requirements of relevant legislation and Australian Standards and SafeWork NSW requirements and guidelines. Any storage drums or containers containing fuel and chemicals must be contained within covered bunds sufficient to contain at least 120% of the volume of the single largest container stored within the bund. All waste produced as part of the Project must be managed and disposed of in accordance with the Waste Classification Guidelines (NSW EPA 2014) and the Waste Management Procedure under the CEMP A hazardous materials assessment would be carried out prior to and during the demolition of buildings. Demolition works would be undertaken in accordance with the relevant Australian Standards and relevant NSW WorkCover Codes of Practice, including the Work Health and Safety Regulation An Alexandra Canal Contamination (ACCMP) will be prepared as a sub-plan to this CCLMP. The ACCMP will outline mitigations measures required to minimise sediment mobilisation as a result of proposed construction activities. Measures to manage public health and safety concerns to be implemented throughout construction in accordance with the Community Communication Strategy. Where identified as required in an RAP, water testing and management requirements for the stockpile will be undertaken. The approach to managing asbestos waste is identified in Manage Work with Asbestos (M5N-ES-GUI-PWD-0001), which includes the requirement to use a licensed contractor when handling and disposing of asbestos material and certification of the clearance and disposal process. Bunding will be provided in accordance with Australian Standards. Waste will be classified and managed in accordance with the Waste Classification Guidelines (NSW EPA 2014). The assessment will be undertaken in accordance with the specific demolition plan. The ACCMP will be prepared by a specialist sediment expert in accordance with the requirements of the Remediation Order under the CLM Act, 1997 in consultation with NSW EPA and Sydney Water and City of Sydney Council. Where potential off-site impacts (actual or perceived) are identified for contaminated land management activities, the following information to be provided by way of the mechanisms outlined in the Community Communication Strategy: Nature of contamination Timing/duration of works affecting contaminated sites Construction management and mitigation strategies to ensure health and safety requirements are being met. CM06 CM13 CM05 CM15 CM07 CM11 CoA D54(c) Manage Work with Asbestos (M5N- ES-GUI-PWD-0001) Manage Hazardous Substances Procedure (M5N-ES-PRC-PWD- 0041) Construction Waste and Resource Sub-Plan (M5N-ES-PLN-PWD-0008) Project WHS (M5N-HS-PLN-PWD-0001) Manage Work with Asbestos (M5N- ES-GUI-PWD-0001) ACCMP (to be developed following detailed design) Community Communication Strategy (M5N-CS-PLN-PWD-0008) WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 33 of 48

34 Construction Contaminated Land 8. Inspection, Monitoring and Reporting Regular compliance activities, such as inspections, observations and monitoring will be undertaken for the purposes of this CCLMP throughout establishment and construction of the ancillary facilities and construction sites (as described in Table 4). These activities will focus on the implementation of RAPs and management documents through the Construction Area Plans. Subcontractor works will be included in regular inspections, observations, monitoring and audits as appropriate. Additional requirements for inspections, monitoring and reporting are included in the relevant RAP, or other site-specific contamination assessment report. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 34 of 48

35 9. Review Construction Contaminated Land 9.1 Plan Revision Plan revisions and performance revisions will be undertaken as per Part B Element 12 of the CEMP. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 35 of 48

36 Construction Contaminated Land 10. References ANZECC/ARMCANZ, 2000, Australian and New Zealand Guidelines for Fresh and Marine Water Quality. Australian and New Zealand Environment and Conservation Council and Agriculture and Resource Management Council of Australia and New Zealand, Paper No 4, Canberra. AECOM 2015, WestConnex New M5 Technical Working Paper: Contamination, AECOM Australia Pty Ltd, November 2015 DEC 2006, Guidelines for the NSW Auditor Scheme (2nd Edition), Department of Environment and Conservation NSW. DEC 2007, Contaminated Sites: Guidelines for the Assessment and Management of Groundwater Contamination. NSW EPA, Sydney. EPA 1995, Contaminated Sites: Sampling Design Guidelines. NSW EPA, Sydney. EPA 2014, Waste Classification Guidelines, Part 1: Classifying waste. NSW EPA, Sydney. NEPC 2013, National Environment Protection (Assessment of Site Contamination) Measure (NEPM) 1999, National Environment Protection Council OEH 2011, Guidelines for Consultants Reporting on Contaminated Sites, Office of Environment and Heritage. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 36 of 48

37 Construction Contaminated Land Appendix A Glossary of Terms Term / Abbreviation ACM AFMP ASS Definition Asbestos Containing Material Ancillary Facilities Acid Sulfate Soils ASSMP Acid Sulfate Soils Management Procedure (for WCX New M5) CCS CCLMP CDS-JV CEMP CLM Act CoA CoPCs Construction Area Construction Area Plan (CAP) CSWQSP CWRSP D&C Deed DP&E EC EIS EMM ENM EPA Community Communication Strategy Construction Contaminated Land CPB Dragados Samsung Joint Venture Construction Environmental Contaminated Land Management Act 1997 (NSW) Condition of Approval Contaminants of Potential Concern A separable portion of work that is identified early in construction planning to help drive early definition of construction methodology and alignment of design activities. Work Areas should be listed in the overall construction methodology. The planning document for a work area is called a Construction Area Plan. The main document prepared during the construction planning for that work area. Includes construction methodology, risk assessment, constructability reviews and Work Pack listing. Construction Soil and Water Quality Sub-Plan Construction Waste and Resource Sub-Plan Design and Construction As appropriate to the defined scope of the WestConnex New M5 Main Works D&C Deed. Department of Planning and Environment Environmental Consultant Environmental Impact Statement Environmental Management Measures Excavated Natural Material Environment Protection Authority EP&A Act Environmental Planning and Assessment Act 1979 EPBC Act Environment Protection and Biodiversity Conservation Act 1999 (Cth) WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 37 of 48

38 Construction Contaminated Land Term / Abbreviation EPL ER ESA EWMS IC Infrastructure Approval Definition Environment Protection Licence Environmental Representative Environmental Site Assessment Environmental Work Method Statements Independent Certifier Approval under the Environmental Planning & Assessment Act 1979 for SSI 6788 signed by the Minister for Planning on 20 April 2016 ITS LCMP LEMP LT-SEMP NEPM St Peters Interchange - Landfill Closure (M5N-GOL-TER ) Landfill Closure - Landfill Environment. An appendix in the St Peters Interchange - Landfill Closure Long Term-Site Environmental National Environmental Protection (Assessment of Site Contamination) Measure 1999 POEO Act Protection of the Environment Operations Act 1997 Project Project requirements RA RAP REMM RMS, Roads and Maritime RVR SAQP SAR SAS SEARS SMC SPIR SWTC WestConnex New M5 Project The project requirements include all CoA (pursuant to Infrastructure Approval), REMMs, EMMs, SWTC and EPL. Remediation Area. A discrete section/area for a phase of works as defined in a Remediation Action Plan or Construction Area Plan. Remediation Action Plan Revised Environmental Management Measure (from the SPIR) Roads and Maritime Services Remediation Validation Report Sampling Analysis and Quality Plan Site Audit Report Site Audit Statement Secretary s Environmental Assessment Requirements Sydney Motorway Corporation Submission [and Preferred Infrastructure] Report As appropriate to the defined scope of the Scope of Works & Technical Criteria defined as Schedule XX under the New M5 D&C Deed. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 38 of 48

39 Construction Contaminated Land Term / Abbreviation SSI TWA VENM WCX New M5 WDA Definition State Significant Infrastructure Trade Waste Agreement Virgin Excavated Natural Material WestConnex New M5 WestConnex Delivery Authority, now Sydney Motorway Corporation (SMC) WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 39 of 48

40 Construction Contaminated Land Appendix B Properties preliminary risk evaluation of potential contamination Area Address Figure Reference Risk of Potential Contamination Figure Site ID Kingsgrove North (C1) and South (C2) Construction Compound Site (Kingsgrove) Commercial Road (C3) Construction Compound Site (Kingsgrove) Bexley North Construction Compound Site (C4) (Bexley) Arncliffe (C7) Construction Compound Site (Arncliffe) Canal Road Compound (C8) (St Peters) Landfill Closure Compound (C9) (St Peters) Burrows Road Compound (C11) (St Peters) Campbell Road Bridge Compound (C12) (St Peters) Gardeners Road Bridge Compound (C13) (St Peters) C14 Sydney Park Compound (C14) (St Peters) St Peters Interchange Area including bridge and road M5 Linear Park - existing M5 noise mounds on the north and south side of the M5 at Kingsgrove and part of Beverley Grove Park Garema Circuit, Kingsgrove (SP37275) commercial / industrial units 30A and 32 Commercial Road, Kingsgrove bus parking, warehouse, commercial / industrial (Lots 1 and 2 DP ) RMS vacant land, Bexley Road, Bexley North (Lot 9 to 18 in DP ) Kogarah Golf Course, 19 Marsh Street, Arncliffe (Lot 1 DP , Lot 1 DP , Lot 14 DP ) B1 3 High B1 23 Medium B1 24 Medium B2 25 Medium B3 4 Medium Strata Units - 1 Canal Rd B4 21 Medium Dynamo Workshop Princes Highway (Lot A DP335583) Commercial / Industrial units - 1 Holland Street, St Peters Commercial / Industrial units - 2 Woodley Street and 8A Holland Street, St Peters Commercial / Industrial units Holland Street Dial A Dump Waste, including Good River properties Pty Ltd and SITA Alexandra, 33 Burrows Rd, St Peters Trilogy Smash Repairers, Campbell Road St Peters Greyhound Bus Depot, 34 Burrows Road, St Peters Trojan Transport Services Burrows Rd, St Peters (Lot 2010 in DP ) Sydney Park, St Peters ((Part of Lot 6 DP810522, Lot 1 DP and Lot 1 DP802167)) The City of Sydney Council Depot, Burrows Road, St Peters Sealed Air Australia - Part of 1-3 Burrows Rd, St Peters (Lot 12 in DP ) B4 21 High B4 27 High B4 26 High B4 28 Medium B4 10 High B4 15 High B4 8 High B4 19 High B4 6 High B4 5 High B4 18 High WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 40 of 48

41 Construction Contaminated Land Area Address Figure Reference Risk of Potential Contamination Figure Site ID construction (St Peters) Local Road Upgrades including road construction and widening (St Peters, Alexandria, Mascot) Bradshaw Mountain, Corner of Woodley Street and Campbell Avenue, St Peters (Lot 1 DP88087, Lot B DP376645) 3 Former Lead Smelter, 5/5A Canal Rd, St Peters 4 Boiling Point Pty Ltd, 4-16 Campbell Street, St Peters (Lot 1 DP and Lot 1 DP321348) Winden Cleaning Products, 62 Campbell Street & Albert Street, St Peters Builders storage yard, 25 Albert St and Campbell Street, St Peters (Lot 1 DP921970, Lot 1 and 2 DP and Lot 1 DP2543) B4 22 High B4 2 High B4 9 High B4 11 Medium B4 12 Medium Electrical Substation, Albert St, St Peters B4 13 Medium Workshop, Campbell Road, St Peters B4 14 Medium Camdenville Park, Bedwin Road and May Street St Peters 16/67 Bourke Rd, Alexandria and 81 and 81A Bourke Rd, Alexandria B4 7 High B4 16 Medium Part of 653 Gardeners Road, Mascot B4 17 Medium Goodman property - Part of 697 Gardeners Rd Mascot Vacant land and Commercial / Industrial units - 27 to 35 Campbell Road, St Peters Food packaging and processing Campbell Road, St Peters Thrifty Car Rental 538 Gardeners Road, Mascot Commercial / Industrial units Gardeners Road, Mascot Commercial / Industrial units - 1-3B, Ricketty Street, St Peters B4 20 Medium B4 29 Medium B4 30 Medium B4 31 High B4 32 Medium B4 33 Medium 3 This site is being assessed and remediated in conjunction with the Alexandria Landfill site. 4 This site is being assessed and remediated in conjunction with the Alexandria Landfill site. WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 41 of 48

42 St Peters ( ( ( ( ( ( ( ( ( ( ( ( (( ( ( ( ( ( ( ( ( ( ( ( ( ( Bexley ( ( ( ( ( ( Arncliffe Kingsgrove ( Potentially Contaminated Site Temporary HV Power Works Project Substratum Boundary Project Compound Area Project Deed Boundary ,000 1,500 2,000 Metres 2,500 Figure B1: Areas of potential or known contamination- overview

43 Site Number Notes M5 Noise Mounds, north and south of M Garema Circuit, Kingsgrove 30A and 32 Commercial Road, Kingsgrove 3 C C3 C2 Potentially Contaminated Site Temporary HV Power Works Project Substratum Boundary Project Compound Area Project Deed Boundary Metres 300 Figure B2: Areas of potential or known contamination- Compounds C1, C2 and C3

44 Site Number Notes 25 Bexley North Construction Compound (RMS vacant land, Bexley Rd, Bexley North, Lot 9 to 18 in DP ) 25 C4 C6 C5 Potentially Contaminated Site Temporary HV Power Works Project Substratum Boundary Project Compound Area Project Deed Boundary Metres 200 Figure B3: Areas of potential or known contamination- Compounds C4, C5 and C6

45 Site Number Notes 4 Arncliffe Construction Compound (part of Kogarah Golf Course, 19 Marsh St, Arncliffe) 4 C7 Potentially Contaminated Site Temporary HV Power Works Project Compound Area Project Substratum Boundary Project Deed Boundary Metres 300 Figure B4: Areas of potential or known contamination- Compound C7

46 Site Number C C C C12 10 C11 18 Notes F orm e rl ea ds m e lte r5 / 5 ACa na l Roa d, S tpe te rs T he Cityof S y dne ycouncil De pot, Burrow s Roa d, S tpe te rs S y dne ypa rk( Pa rtof L ot6dp , L ot1dp a ndl ot1dp ) Ca m de nville Pa rk, Ma ys tre e ta ndbe dw in Roa d, S tpe te rs Gre y houndbus De pot, 3 4Burrow s Roa d, S tpe te rs BoilingPointPtyL td, 4 1 6Ca m pbe ll S tre e t, S tpe te rs Dia l ADum p Wa ste, includinggoodrive rprope rtie s PtyL tda nds I T AAle x a ndra, 3 3Burrow s Rd, S tpe te rs Winde n Cle a ningproducts, 6 2Ca m pbe ll S tre e t& Albe rts tre e t, S tpe te rs Builde rs stora g e y a rd, 2 5Albe rts ta nd Ca m pbe ll S tre e t, S tpe te rs E le ctrica ls ubsta tion, Albe rts tre e t, S tpe te rs Work shop, Ca m pbe ll Roa d, S tpe te rs T rilog ys ma shre pa ire rs, Ca m pbe ll Roa ds tpe te rs 1 6 / 6 7Bourk e Roa d, Ale x a ndria&8 1a nd8 1 ABourk e Roa d, Ale x a ndria Pa rtof 6 5 3Ga rde ne rs Roa d, Ma scot S ea le dairaustra lia-pa rtof 1 3Burrow s Rd, S tpe te rs T roja n T ra nsports e rvice s Burrow s Rd, S tpe te rs Goodm a n prope rty-pa rtof 6 9 7Ga rde ne rs RdMa scot S tra taunits -1Ca na l Rda nddy na m o Work shop Prince s Hig hw a y( L otadp ) Bra dsha w Mounta in, Corne rof Woodle ys tre e ta ndca m pbe ll Ave nue, S tpe te rs 2Woodle ys tre e ta nd8 AHolla nds tre e t, S tpe te rs 1Holla nds tre e t, S tpe te rs 1 0to 1 8Holla nds tre e t, S tpe te rs Va ca ntla nda ndcom m e rcia l /I ndustria l units -2 7to 3 5Ca m pbe ll Roa d, S tpe te rs F oodpa ck a g inga ndproce ssing Ca m pbe ll Roa d, S tpe te rs T hriftyca rre nta l 5 3 8Ga rde ne rs Roa d, Ma scot Com m e rcia l /I ndustria l units Ga rde ne rs Roa d, Ma scot Com m e rcia l /I ndustria l units -1to 3 B, Rick e ttys tre e t, S tpe te rs Pot ent i allycont ami nat edsi t e Tempor ar yhvpowerwor ks Pr oj ectsubst r at um Boundar y Pr oj ectcompoundar ea Pr oj ectdeedboundar y Met r es 600 Fi gur eb5:ar easofpot ent i al orknowncont ami nat i on SPIandlocal r oads

47 Construction Contaminated Land Appendix C Alexandra Canal Contamination WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 47 of 48

48 Alexandra Canal Contamination Management Plan Project Name: WestConnex New M5 Project number: Document number: M5N-ES-PLN-PWD-0044 Revision date: 30 May 2018 Revision: 03 Document Approval Rev. Date Prepared by Reviewed by Recommended by 00 11/09/2017 CDS-JV Approved by Remarks 01 6/2/2018 CDS-JV For Review 02 16/4/2018 CDS-JV 03 30/4/2018 CDS-JV Addressing Sydney Water comments. For implementation. Addressing EPA comments.

49 Alexandra Canal Contamination Details of Revision Amendments Document Control The Project Director is responsible for ensuring that this Plan is reviewed and approved. The Support Services Director is responsible for updating this Plan to reflect changes to the Project, legal and other requirements, as required. Amendments Any revisions or amendments must be approved by the Project Director before being distributed or implemented. Revision Details Revision Details 00 Draft prepared by Golder Associates 01 Draft for stakeholder consultation 02 Addressing Sydney Water comments 03 Addressing EPA Comments WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 2 of 28

50 Alexandra Canal Contamination Contents 1. Introduction Context Objectives of this Plan Interface with Other Plans Legislative & Other Requirements Environmental Planning and Assessment Act Contaminated Land Management Act Protection of the Environment and Operations (POEO) Act Guidelines and Relevant Documents Site Description Site Location and Layout Site History Site Sediment Distribution Site Sediment Contamination Summary Construction Aspects & Environmental Impacts Implementation Roles and Responsibilities Training and Awareness Consultation Mitigation and Management Measures Environmental Plans and Procedures Mitigation and Management Measures Inspection, Monitoring and Reporting Review References Appendix A Glossary of Terms Appendix B Declaration of Remediation and Remediation Order Appendix C Erosion and Sediment Control Plan Appendix D Pollution Incident Response Summary WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 3 of 28

51 Alexandra Canal Contamination 1. Introduction 1.1 Context The New M5 Project is the Stage 2 component of the WestConnex scheme, a NSW Government initiative to connect Sydney s west and south-west with the Sydney Airport and the Port Botany precinct. It is being delivered by the Sydney Motorway Corporation (SMC), formerly the WestConnex Delivery Authority (WDA). The CPB Dragados Samsung Joint Venture (CDS-JV) is delivering the design and construction of WestConnex Stage 2 referred to as the WCX New M5 (the Project). The Project will run from the existing M5 East corridor at Beverly Hills via tunnel to St Peters, providing improved access to the airport, south Sydney and Port Botany precincts. The Project will substantially improve the east - west corridor access between the Sydney Central Business District, Port Botany and Sydney Airport precincts and the South West growth areas. The Project will deliver approximately nine kilometres of two-lane twin tunnels with capacity to operate three lanes in the future, motorway to motorway connections to the King Georges Road Interchange Upgrade at Beverly Hills, and a new interchange at St Peters. Infrastructure Approval was received on 20 April 2016 and major works commenced during mid-2016, with the WCX New M5 tunnel scheduled to open to traffic in late This Alexandra Canal Construction (ACCMP) forms part of the Construction Contaminated Land (CCLMP, CDS 2016a) and has been developed for construction of the Project. The ACCMP describes how CDS-JV will manage and minimise potential mobilisation of sediments in the Alexandra Canal during construction of the Project. The ACCMP has been prepared in response to a requirement under the Project Conditions of Approval (CoA). Specifically it responds to CoA D54 (refer to Section 2.1.2). 1.2 Objectives of this Plan The objectives for the ACCMP are to ensure that mobilisation of the Alexandra Canal sediments as a result of construction activities are avoided or minimised and comply with the conditions set out within the Project Planning Approval. There are no overwater piling works proposed for the Project in the Canal. The objective of this plan is to ensure appropriate control and management measure are implemented to avoid or minimise any incidental disturbance of sediments from construction activities. The objectives of this Plan include: Ensure appropriate controls and procedures are implemented during construction activities to avoid and refrain from carrying out, or from causing any works or activities on the bed sediments of the Canal that would result in the disturbance, or further disturbance, of the bed sediments except as provided by EPA remediation order Ensure appropriate measures are implemented to address the relevant CoA, EMMs and that the measures to be implemented are cognisant of related requirements documented under the Alexandra Canal Remediation Order, issued under Section 9 1 of the Contaminated Land Management Act 1997 (the CLM Act) (refer to Section 2.2). Ensure compliance with Section 120 of the Protection of the Environment Operations Act 1997 (the POEO Act) which prohibits the pollution of waters. 1.3 Interface with Other Plans This ACCMP is a Sub-Plan to the CCLMP (CDS 2016a) for the management during construction activities of contamination within the Project footprint, including the management of contaminated sediments within Alexandra Canal. Whilst the ACCMP and the CCLMP link to the CDS-JV Project Construction Environmental (CEMP) (CDS, 2016b) as outlined in the CEMP framework presented in Table 1, and makes specific reference to plans and sub plans prepared under the CEMP, the procedures described herein are independent. 1 Section 12 under the amended CLM Act. WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 4 of 28

52 Alexandra Canal Contamination Table 1: New M5 CEMP Framework Sub-Plans to CEMP Sub-Plan attachments Standalone Documentation (linked to CEMP) Construction Air Quality Sub Plan NA Sustainability Plan Ancillary Facilities Manage Air Quality Procedure Construction Noise and Vibration Sub Plan Out of Hours Works Protocol Blast Management Strategy Land Use Survey Sustainability Plan Ancillary Facilities Manage Environment Noise Issues Procedure Construction Traffic & Access Sub Plan NA Traffic s Ancillary Facilities Local Road Dilapidation Report Road Safety Audit Construction Environmental Construction Soil & Water Quality Sub Plan N/A Construction Heritage Sub Plan NA Flood Mitigation Strategy Groundwater and Soil Salinity Report Sustainability Plan Geotechnical Model Ancillary Facilities Construction Contaminated Land Manage Contaminated Land Procedure Manage Soil and Water procedure Water Quality Plan and Monitoring Program Acid Sulfate Soil Management Procedure Asbestos Guideline Sustainability Plan Geotechnical Model Ancillary Facilities Manage Cultural Heritage Procedure Construction Flora & Fauna Sub Plan Pathogen and Weed Management Strategy Nest Box Ecological Monitoring Program Microbat Sustainability Plan Ancillary Facilities Arncliffe Construction Compound Sub Plan Urban Design and Landscape Management Plan Biodiversity Offsets Package Manage Flora and Fauna Procedure Waste and Resource Sub Plan NA Sustainability Plan Manage Waste Procedure Energy Efficiency and Greenhouse Gas Emissions Strategy NA Sustainability Plan WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 5 of 28

53 Alexandra Canal Contamination 2. Legislative & Other Requirements The CDS-JV is required to ensure all activities carried out on Project construction sites comply with all relevant legislation, regulations, codes and guidelines. This section provides the relevant legislation and Project requirements that apply to this document. Planning Approval for the Project is being regulated by the Department of Planning and Environment (DPE), NSW under the Environmental Planning and Assessment Act 1979 (the EP&A Act). The NSW Environment Protection Authority (EPA) and Sydney Water are stakeholders for consultation during the development of this ACCMP. The other principal legislation and guidance relevant to the management of Alexandra Canal sediments for this Project include: CLM Act; POEO Act; Water Management Act 2000; Sydney Water Act 1994; Work Health and Safety Act 2011 (and Regulation); and Australian Standards and Codes of Practices. Relevant provisions of the above legislation are explained in the register of legal and other requirements included in the CCLMP and Project CEMP. 2.1 Environmental Planning and Assessment Act 1979 This ACCMP has been prepared with consideration of Project planning requirements, including: to address the mitigation measures listed in the New M5 Environmental Impact Statement (EIS) (AECOM 2015b); the Submissions and Preferred Infrastructure Report (SPIR) (AECOM 2016) and the Project CoAs relevant to Alexandra Canal sediments. Project Approval was sought under Part 5.1 of the Environmental Planning and Assessment Act 1979 (the EP&A Act). The Project is declared to be State Significant Infrastructure (SSI) under the EP&A Act and accordingly was subject to assessment under Part 5.1 of the EP&A Act, requiring the approval of the Minister for Planning. An EIS was therefore required. On 11 August 2015, the Commonwealth Minister for the Environment determined that the Project had the potential to significantly impact on a matter of national environmental significance and was therefore a controlled action. This meant that Approval of the Project was also required from the Commonwealth Minister for the Environment in addition to environmental and planning approvals required under State legislation. The Project EIS was able to be adapted for the purpose of meeting the assessment requirements of the Commonwealth Environment Protection and Biodiversity Act 1999 (the EPBC Act) in addition to those of the EP&A Act EIS Requirements The Secretary s Environmental Assessment Requirements (SEARs) were issued for the WCX New M5 Project on 5 March 2015, and re-issued on 26 August The SEARs included that the following be completed: "an assessment of the potential disturbance of contaminated bed sediments in the Alexandra Canal. The potential disturbance of contaminated bed sediments in the Alexandra Canal was discussed in in the Project EIS in the Technical Working Paper: Contamination 2 (AECOM 2015a), prepared as part of the EIS (AECOM 2015b - Table 17-7) for the Project. This included Environmental Management Measures (EMMs) stipulating mitigation and management measures to be implemented during the construction and operation of the Project to reduce or eliminate the risks posed by contamination. The Revised Environmental Management Measures (REMMs) included in the EIS and SPIR relating to the management of Alexandra Canal sediments during construction are included in Table 2. These mitigation and management measures are required to be addressed and implemented during the construction of the Project. 2 WestConnex The New M5 Technical Working Paper: Contamination, AECOM Australia Pty Ltd, November WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 6 of 28

54 Alexandra Canal Contamination Table 2: Revised Environmental Management Measures from New M5 EIS Relevant to the Management of the Alexandra Canal Sediments during Construction Reference Requirement Where addressed REMM CM03 REMM CM04 REMM CM10 REMM CM11 REMM CM12 Potentially contaminated areas directly affected by the project would be investigated and managed in accordance with the requirements of guidance endorsed under section 105 of the CLM Act. This includes further investigations in areas of potential contamination identified in the construction footprint. An unexpected finds and hazardous materials procedure would be implemented to manage any potentially contaminated materials that may be encountered during site preparation and / or construction works. In the event of encountering unexpected finds of contamination (i.e. the observation of offensive odours, soil discoloration, buried waste or potential asbestos containing materials) during construction, work in the area would cease until an appropriately qualified environmental consultant can advise on the need for further assessment, remediation or other action, as deemed appropriate. Further assessment and management of contamination, if required, would be undertaken in accordance with section 105 of the CLM Act. Appropriate mitigation measures to minimise sediment mobilisation as a result of construction activities at the location of the new stormwater infrastructure at Alexandra Canal would be detailed in the CEMP in accordance with the requirements of the Remediation Order in consultation with NSW EPA and Sydney Water. Measures would be detailed in an Alexandra Canal Contamination. Appropriate mitigation measures including stockpiling and management of potentially contaminated material would be undertaken at construction compounds to prevent movement of material into receiving waters. CCLMP Manage Contaminated Land Procedure Manage Contaminated Land Procedure Under this Plan Construction Soil & Water Quality Sub Plan Site Specific RAPs (if applicable) Project Planning Conditions of Approval Project Approval for SSI 6788 was determined on 20 April The CoA D54 that specifically include management of Alexandra Canal sediments is presented in Table 3. Table 3: Conditions of Approval Relevant to the ACCMP Reference Requirement Where addressed D54 The Proponent must prepare and implement a Construction Contamination to manage potential contamination impacts during construction of the SSI (excluding contamination covered by the Landfill Closure for the Alexandria Landfill site). The Construction Contamination must be developed in consultation with the EPA and relevant councils, and include, but not be limited to: (a) details of construction activities and their locations which have the potential to expose areas known to contain, or potentially contain, contaminated soils and/or materials; (b) details of management measures to minimise bed sediment mobilisation in Alexandra Canal. All measures must comply with the actions required of Remediation Order HO1833, 23004/ Area #3151 issued by the EPA on 10 May 2004; Construction Contaminated Land (CCLMP) Which forms the overarching Plan to this Plan Section 4 and 2.1 of the CCLMP This Plan WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 7 of 28

55 Alexandra Canal Contamination Reference Requirement Where addressed (c) measures for the handling, treatment and management of hazardous and contaminated soils, materials and groundwater including measures to manage and/or minimise public health and safety concerns with regards to exposure to contamination; (d) an Unexpected Finds Procedure detailing procedures and management measures to be implemented in the event that contaminated material is uncovered in any area not identified in the documents referred to in conditions A2(b), A2(c) and A2(e); (e) a description of how the effectiveness of the actions and measures for managing contamination impacts would be monitored during the proposed works, clearly indicating how often this monitoring would be undertaken, the locations where monitoring would take place, and how the results of the monitoring would be recorded and reported; and (f) mechanisms for the monitoring, review and amendment of the Construction Contamination. The Construction Contamination must be submitted to the Secretary prior to undertaking any works which may result in the disturbance of contaminated soil, land or materials. Section 7.2 of the CCLMP and the Waste and Resource Management Plan Section 7.2 of the CCLMP Section 8 of the CCLMP within site specific RAPs and/or LT-SEMPs Section 8 of this Plan and Section 9 of the CCLMP This Plan and CCLMP Nothing in this condition prevents the Proponent from preparing separate Construction Contamination s for specific areas of work, rather than a plan which addresses the entire SSl. 2.2 Contaminated Land Management Act 1997 Under Section 9 3 of the CLM Act the NSW EPA determined that Alexandra Canal between Huntley Street and the confluence with the Cooks River presents a significant risk of harm 4 based on: The actual harm to benthic biota; The potential risk caused by human ingestion of contaminants accumulated in fish; and The mobilisation of contaminants from sediment into the water column (and subsequent dispersion to the Cooks River and ultimately Botany Bay) would increase the risk of harm. In August 2000, the NSW EPA issued a Declaration of Remediation Site 5 for Alexandra Canal (Declaration Number / Area 3151). The nature of the substances causing contamination were summarised as: chlorinated hydrocarbons including organochlorine pesticides (chlordane, total DDT and dieldrin), polychlorinated biphenyls (PCBs) and metals in the bed sediments of the canal. In response to the declaration, the NSW EPA issued a Remediation Order 6 to Sydney Water Corporation (Sydney Water, the site owner) (May 2004). This Remediation Order prevents any works that would result in the disturbance, or further disturbance, of bed sediment in the canal unless an appropriate investigation/remediation plan has been developed and approved by the NSW EPA. The order also includes a requirement on Sydney Water to develop and implement an information campaign to alert others to the contamination and document the campaign s implementation, including the provision of information to the NSW EPA. The order includes correspondence from Sydney Water, dated 21 March 2012 providing an update of their actions required under the order. This document has been prepared to ensure compliance with the Remediation Order and should be submitted to Sydney Water and NSW EPA for approval. A copy of the Declaration of Remediation and Remediation Order is provided in Appendix B. 3 Section 12 under the amended CLM Act. 4 Is significantly contaminated. The 2008 amendment to the CLM Act removed the concept of 'significant risk of harm'. 5 Declaration of remediation site issued under Section 21 of the CLM Act 1997 known as a Declaration of significantly contaminated land issued under Section 11 of the CLM Act after 1 July Remediation order issued under Section 23 of the CLM Act 1997 known as a Management Order issued under Section 14 of the CLM Act after 1 July WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 8 of 28

56 Alexandra Canal Contamination 2.3 Protection of the Environment and Operations (POEO) Act EPL Conditions An Environmental Protection Licence (EPL) has been issued for the Project for activities listed in Schedule 1 of the POEO Act. EPL was originally obtained on 17 th May 2016 and includes the portions of Alexandra Canal relevant to the Project. The condition within the EPL which is relevant to this Plan is: Condition L1.1 Pollution of waters which states: Except as may be expressly provided in any other condition of this licence, the licensee must comply with section 120 of the Protection of the Environment Operations Act Guidelines and Relevant Documents The main guidance, specifications and policy documents relevant to this ACCMP include: ANZECC/ARMCANZ, 2000, Australian and New Zealand Guidelines for Fresh and Marine Water Quality. Australian and New Zealand Environment and Conservation Council and Agriculture and Resource Management Council of Australia and New Zealand, Paper No 4, Canberra; Simpson, Batley & Chariton 2013, Revision of the ANZECC/ARMCANZ Sediment Quality Guidelines, CSIRO Land and Water Science Report 08/07; Simpson SL & Batley GE 2016, Sediment Quality Assessment: A Practical Guide, CSIRO, Bangor, NSW; and Simpson SL, Batley GE, Chariton AA, Stauber JL, King CK, Chapman JC, Hyne RV, Gale SA, Roach AC, Maher WA 2005, Handbook for Sediment Quality Assessment, CSIRO, Bangor, NSW. WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 9 of 28

57 Alexandra Canal Contamination 3. Site Description 3.1 Site Location and Layout Alexandra Canal, located in southern Sydney, runs from Alexandra to the Cooks River at Tempe and eventually discharges to Botany Bay. The canal is 3.9 km long, about 60 metres wide and is currently spanned by four bridges. The shallow waterway constitutes a major conduit for stormwater fed by numerous smaller drains and is tidal over its entire length. 3.2 Site History Industrialisation and urbanisation began in the catchment of the Alexandra Canal in around 1840 and the area has remained industrialised to the present day. Construction of the canal commenced in 1889 to provide navigable water depths to wharves upstream in the catchment. The canal largely followed the original watercourse of Shea s Creek and was excavated to about 3 metres below previous ground surface. The original depth of the canal has been estimated to be about 6 metres below mean low tide level. Regular dredging to maintain navigable water depths was undertaken between 1900 and Dredging was undertaken again in and 1977, for nonnavigational purposes, but the canal has not been used for shipping since about Sydney Water became the titular owner of Alexandra Canal in Sediment has filled in the canal and the upper reaches contain muddy sediment and intertidal sandbars. The canal is currently a depositional environment. The former estuarine and fluvial habitats of Shea s Creek were lost during the construction of the canal and there is no habitat of special value, or threatened/endangered species that have been identified in the canal. 3.3 Site Sediment Distribution The grainsize of sediment in Alexandra Canal generally decreases downstream, from (muddy) sand near Shea s Creek to sandy mud near the confluence with the Cooks River (Woodward-Clyde, 1998) and this distribution is thought to be related to variable flow velocities within the canal. Sediment upstream of the Ricketty Street Bridge comprises sandy point bars with finer (<63 µm) sediment accumulating in deeper channels. Fine sediment deposited near the head of the canal is likely to be scoured during moderate flow periods and redeposited in deeper mid sections of the canal. Bathymetric profiling by the University of Queensland (2002) indicated that the canal is relatively deep (max. depth ~4 m) within 150 m of Shea s Creek, probably as a result of scouring. 3.4 Site Sediment Contamination Summary Contamination Sources Sources of contamination to Alexandra Canal include discharge from licensed and unlicensed premises, past industrial and waste disposal, sewer overflows during wet weather, dumping and stormwater runoff. EPA (SoE, 1997) estimated that the dominant (37%) source of contamination is from stormwater runoff. Samples collected by the University of Sydney, indicate that incoming sediment to Alexandra Canal is contaminated with trace metals and organochlorine pesticide residues (Woodward-Clyde, 1998) Previous Sediments Assessments Several studies have demonstrated that surficial sediment in the canal exceed ANZECC/ARMCANZ (2000) Interim Sediment Quality Guideline (ISQG) High and Low values for a number of contaminants (University of Queensland, 2002; Birch and McCready, 2002): Sediment in Alexandra Canal consistently exceeds ISQG-H values for copper, lead and zinc. Mercury also exceeds the ISQG-H values at depth in the sediment profile; Sediment contains concentrations of polycyclic aromatic hydrocarbons (PAHs) that are typically between ISQG-L and ISQG-H values and generally increased with sediment depth (to 0.5 m). Concentrations of pyrene greatly exceeds guideline values at some locations; Organochlorine pesticides notably chlordane, dieldrin and DDT (including metabolites) exceed ISQG-H values at many locations in Alexandra Canal; and PCBs substantially exceed ISQG values after normalisation to 1% TOC (total organic carbon). WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 10 of 28

58 Alexandra Canal Contamination Site Sediment Redistribution Potential Sediment bound contaminants from contemporary sources in the highly developed catchment of Alexandra Canal continue to accumulate in the canal. Particulate materials entering the canal via numerous stormwater discharge points during low rainfall period would flocculate at low salinities as the influx of fresh water mixes with estuarine water, and accumulate in the canal. In contrast, during high rainfall events, fine particulate material would remain in suspension and likely transit through the canal. High flow velocities generated during storm events are also likely to redistribute sediment (and associated contaminants), particularly in upper reaches of the canal. Contaminated sediments are likely to continue to accumulate in the canal until an equilibrium level is reached. Sediment temporarily deposited above this level would be periodically removed by scouring during high flow events. WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 11 of 28

59 Alexandra Canal Contamination 4. Construction Aspects & Environmental Impacts Table 4 presents the site description and key construction activities that have the potential to impact the Alexandra Canal sediments. This includes construction activities on adjacent sites associated with the two bridges to be construction over the Canal and the upgrade of existing drainage outlets which discharge into the Canal. Further information for construction activities and drainage designs are provided in the Ancillary Facilities (AFMP) (M5N-ES-PLN-PWD ) (CDS-JV 2016c) and the Stormwater Drainage Report, Project-wide Stormwater Drainage (M5N-AJV-DPK DR-1405) (AJJV, 2017). Table 4: Key Construction Activities with the Potential to impact Alexandra Canal Sediments Construction Site Description Alexandra Canal Key Construction Activities with the Potential to impact Alexandra Canal Sediments Potential Hazard Areas of the Canal adjacent to Campbell Road bridge construction compound (C12), Gardeners Road bridge construction compound (C13) and areas in the vicinity of surface water discharge points. Refer to Figure 5B attached to the CCLMP for the location. Construction activities associated with the upgrade of surface water discharge points into the Canal including: Upgrades to existing drainage outlets 7 at the north eastern boundary of the Campbell Road bridge compound. The stormwater drainage line with headwall will be installed on the side of the Alexandra Canal. The upgrade will require limited cutting and trenching works in the existing canal walls. Upgrades to the stormwater drainage systems are planned to begin first quarter 2018; and A proposed Surface Catch Drain will be installed on the West side of the canal, to cater to a 1:20 Flood Event. These are planned to constructed around First Quarter Construction activities associate with the bridges over the Canal (including activities as described below). All stormwater drainage from these compounds will be tied into pre-existing drainage systems. Campbell Road and Bourke Road Bridge Compounds Disturbance of sediment due to worker activities immediately adjacent to the Canal. Disturbance of sediments through erosion and/or runoff. Surface water discharges via surface stormwater drains to the Canal. Movement of material into the Canal in soils or in stormwater with the potential to disturb sediments The Campbell Road and Bourke Road Bridge compounds include the sites located at 34 Burrows Road, St Peters, and 67 and 81 Bourke Road Alexandria. The compounds are to be mainly used for the construction of a new bridge across the Alexandra Canal as part of the Campbell Road extension. The compounds are to include a car park, Stockpiling of materials for construction works. Support for construction of new bridges across Alexandra Canal as part of the local road upgrades including: Site office / compound establishment / boundary fencing; Earthworks; Ground improvement with concrete injected columns (CIC) piles and load transfer platform (LTP); Piling works; Abutment structures; Fabrication / installation of steel girders; and Deck slab / approach slab / pedestrian underpass / retaining walls. 7 It is noted that the downstream outlet system from Campbell Road to Alexandra Canal has changed from the original tender design. The proposal to construction of a new outlet adjacent to Campbell Street (a culvert alongside the Burrows Road bridge) will not be undertaken. The existing pipe will be upgraded. WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 12 of 28

60 Alexandra Canal Contamination Construction Site Description laydown area, crib area and ablutions facilities. Refer to Figure 5B attached to the CCLMP for the location. Gardeners Road Bridge Compounds Key Construction Activities with the Potential to impact Alexandra Canal Sediments Works to enable tie in with Campbell Road upgrade works. Laydown and storage area for plant and equipment, and permanent materials for bridge works, including precast concrete. Finishing works including landscaping asphalting, line marking and signage installation. All stormwater drainage from these compounds will be tied into pre-existing drainage systems. Potential Hazard The Gardeners Road Bridge construction compounds are located on the southern side of Burrows Road (12-18 Burrows Rd), St Peters and at the end of Gardeners Road, Alexandria (part of 697 Gardeners Road, Alexandria). The Gardeners Road bridge construction compounds would be used to service the construction of a bridge over the Alexandra Canal, which would connect the St Peters interchange directly with Gardeners Road, Mascot. The compound would include a car park, laydown area, crib area and ablutions facilities. The site would include a crib hut, laydown area and car parking. Refer to Figure 5B attached to the CCLMP for the location. Tie-in of the Gardeners Road bridge with the local road upgrades. Storage of bridge construction plant and equipment. Stockpiling of construction materials. Laydown and storage of bridge materials, such as precast concrete. Storage of temporary access platforms for bridge works (western side of the Alexandra Canal). Pre-assembly of segments, heavy lifts and associated bridge and local road upgrade construction. Finishing works, including landscaping, asphalting, line marking and signage. All stormwater drainage from these compounds will be tied into pre-existing drainage systems. WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 13 of 28

61 Alexandra Canal Contamination 5. Implementation 5.1 Roles and Responsibilities The roles and responsibilities of key CDS-JV personnel with respect to management of potential impacts to Alexandra Canal are detailed in Table 5. Table 5: CDS-JV Personnel and Responsibilities for Management of potential impacts to Alexandra Canal Person Project Director Support Services Director Environment and Sustainability Manager Design Manager Commercial Director Construction Director(s) Construction Supervisors and Foremen Environment Advisors Project and Site Engineers Responsibilities Managing the delivery of the New M5 Works including ultimate responsibility for the implementation of contamination land management; and Contractor s Principal Representative. The environmental responsibilities of the CDS-JV Support Services Director include, but not limited to: o Provide environmental oversight, direction and leadership regarding the environmental management of the Project. Oversee the implementation of all environmental management strategies; Environmental reporting and monitoring required under the EPL(s); NSW EPA liaison; Track and report environmental elements against sustainability targets; Ensure management measures and mitigation strategies are developed to minimise potential disturbance of Alexandra Canal sediments; and Ensure the potential to mobilise the Alexandra Canal sediments is minimised and/or avoided as per the Project's management strategy. Ensure that relevant Alexandra Canal sediment management measures and mitigation strategies are addressed in design development. Ensure that relevant Alexandra Canal sediment management and mitigation requirements are considered in procuring materials and services. Manage the delivery of the construction process in relation to Alexandra Canal sediment management across all relevant sites in conjunction with the Environment Manager. On-ground implementation and adherence with Alexandra Canal sediment management requirements; Ensure water runoff from land and stockpiles is contained, treated or disposed to ensure there is no pollution of Alexandra Canal and/or indirect disturbance of sediments; and Conduct task observations as per Project schedule to ensure ongoing effectiveness of environmental control measures. Manage the on-ground application of Alexandra Canal sediment management measures during construction; and Monitor and report on Alexandra Canal sediment management during construction. Implement Alexandra Canal sediment management activities during construction works; Ensure Alexandra Canal sediment management requirements are considered as part of the development of Construction Area Plans (CAPs); Ensure Work Packs include relevant environmental control information including site specific plans prepared under the CCLMP where relevant; and Notify the Supervisor and/or Environment Manager/Representative immediately if impacts to Alexandra Canal sediments is suspected or discovered. 5.2 Training and Awareness CDS-JV will ensure that all employees and contractors involved in the Project receive the appropriate training to ensure they understand and are aware of their environmental responsibilities and the measures to be implemented to protect the environment and ensure compliance with statutory approvals. Training and competency measures for Alexandra Canal management for the Project will include: Ensuring all staff and contractors receive a site-specific induction including induction onto the ACCMP; WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 14 of 28

62 Alexandra Canal Contamination Ensuring that all contractors and operators on the site have the appropriate licences, permits and training to undertake the work; and Maintaining records of all training, inductions, competencies, licences and permits. Refer to the training requirements in the CDS-JV CEMP Part B Element 7 Training and Competency (CDS, 2016a). 5.3 Consultation This Plan is being provided to relevant stakeholders, including the NSW EPA and Sydney Water as required under CoA D54. It provides detail of how CDS-JV proposes to manage and mitigate potential impacts to Alexandra Canal sediments issues identified in the EIS. This consultation is intended to assist in development and finalisation of the Plan. WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 15 of 28

63 Alexandra Canal Contamination 6. Mitigation and Management Measures 6.1 Environmental Plans and Procedures Refer to Section 7.1 of the CCLMP (CDS, 2016a) for relevant plans and procedures related to this document. 6.2 Mitigation and Management Measures Measures to manage and minimise the potential disturbance of Alexandra Canal sediments are to be implemented prior to and during works. Elimination of the hazard is the first preference of control, followed by engineering, then administrative controls. Controls proposed to be used on this Project are identified in Table 6. Table 6: Project controls associated with potential disturbance of Alexandra Canal sediments REMM Reference Potential Construction Activities Potential Hazards and Risks Management Measures and Mitigation Strategies General surface works on sites adjacent to Alexandra Canal including: 34 Burrows Rd; 67 and 81 Bourke Road Alexandria; Burrows Rd; and 697 Gardeners Rd. Disturbance of sediment due to worker activities immediately adjacent to the Canal. Disturbance of sediments through erosion and/or runoff. Surface water discharges via surface stormwater drains to the Canal. Project induction and targeted toolbox talks will include discussion of proximity to Alexandra Canal and procedure to follow if works have potential to cause runoff or impact the Canal. Construction Area Plans (CAP) for all compounds located adjacent to the Canal will include reference to proximity to the Canal and requirement to avoid disturbance of sediments will be presented at inductions. Specific information, including details on the procedure(s) to manage erosion and runoff, will be included in the Project induction. Inspection of the sediment and erosion control devices will occur in accordance with inspection frequencies outlined in the Project Construction Soil and Water Quality Sub- Plan (M5N-ES-PLN- PWD-0005) (CDS-JV, 2016d). See Table 7 below. Surface water and/or stormwater discharges must be controlled to ensure the velocity and volume of discharge at any one time does not cause scour or disturbance of the sediments in the Canal. This control shall be by: 1. Elimination: Reuse water onsite where suitable for dust suppression. 2. Substitution: Avoid discharge directly to the Canal bed. Direct water to the existing stormwater network. 3. Isolation: direct discharges to the Canal are to be near high tide where reasonable and feasible. 4. Administrative: Discharge points to be licenced by the NSW EPA (note: the current licenced discharge point is not related to surface works/sediment ponds but to the tunnel water treatment plant which has monitored flow rates.) Underbore works adjacent to the banking of Alexandria Canal Disturbance of bed sediments as a result of potential frac-out Unplanned release of clay into the canal sediments. These works have been complete Update this plan if further underboring of the canal is added to the Project scope. WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 16 of 28

64 Alexandra Canal Contamination REMM Reference Potential Construction Activities Potential Hazards and Risks Management Measures and Mitigation Strategies Disturbance of bed sediments as a result of potential frac-out CM11 CM12 Earthworks including trenching and excavations adjacent to the Canal including works associated with upgrades to the stormwater drains into the Canal and stockpiling of soil materials adjacent to the Canal. Movement of material into the Canal in soils or in stormwater with the potential to disturb sediments. Earthworks works in areas adjacent to the Canal should be planned for periods when rain is not anticipated. Cut-off drains, banks or bunds should be provided around excavations to help control the ingress and egress of surface and groundwater, as per the Construction Soil and Water Quality Sub Plan (M5N-ES-PLN-PWD-0005) (CDS-JV, 2016d) and Site Specific Erosion and Sediment Control Plans.(Appendix C) Where immediate off-site disposal of stockpiled material is not possible, the locations proposed for the temporary stockpiling of material should be, as far as practical, away from the Canal. To avoid material does not reach the Canal and potentially impact sediments controls must be implemented including: Divert surface run-off away from stockpile sites (including contaminated material stockpiles); Capture and manage any surface runoff exposed to contaminated land/ material; and Where possible, cover or remove stockpiles from sites if rain is anticipated. NOTE: Should bed sediments be disturbed during construction works The below actions will be followed Actions: A regime of water quality sampling and monitoring will be undertaken both upstream and downstream of the location of disturbance to determine whether contaminated sediment has been mobilised into the water column. Analytes to be tested: o Copper o Lead o Zinc o Mercury o Poly aromatic hydrocarbons (including pyrene) o Organochlorine pesticides (including chlordane, total DDT, dieldrin, methoxychlor, toxaphene, mirex, kepone, lindane, and benzene hexachloride) o Polychlorinated Biphenyls (PCB s) Grab samples will be collected manually from upstream and downstream locations to be determined based on location of the frac out. The volume of sample collected will be of sufficient volume for the required analyses, including any repeat analyses and will be collected into WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 17 of 28

65 Alexandra Canal Contamination REMM Reference Potential Construction Activities Potential Hazards and Risks Management Measures and Mitigation Strategies sampling bottles and jars provided by the NATA accredited testing laboratory. In addition to the analytes listed above, field water quality parameters including temperature, electric conductivity (EC), ph, dissolved oxygen (DO) and redox potential (redox) will be measured at each sampling location with a multiprobe field water quality meter. Other observations including odour and colour will also be recorded. The multi-probe field water quality meter will be calibrated against known standards, as supplied by the manufacturer, at the start and completion of each day of water quality sampling. Calibration records will be maintained in accordance with the appropriate standard. Sampling to be conducted at either side of high tide (i.e. the top half of the tide) particularly near shallower edges of the Canal No sampling activities are proposed to be undertaken where the sampling vessel (including outboard leg) will come into contact with underlying sediments or while the motor is on and the vessel moving. Use of a sea anchor or drogue to stabilise the boat, anchor boat on land when sampling near Canal edges to eliminate sediment disturbance, where possible. Use of an anchor will be minimised Where the 3.5 m vessel is utilised the oars will be used to navigate in shallow water to reduce turbulence. The vessel will travel through deepest portion of Alexandra Canal (determined by visual observations and depth sounder) at low speed (less than 5 knots) to minimise wake disturbance When moving in shallow water outboard use will be minimised to the extent practicable to minimise the potential for sediment disturbance and the oars will be used when possible in shallow water. Containment: No sediment containment options are required during the works due to the extreme low risk of a disturbance occurring in the Alexandra Canal and the minimal potential for entrainment of sediment. In the unlikely event disturbance occurs the CDS-JV Pollution Incident Response Management Summary (Appendix D) will be activated where required. WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 18 of 28

66 Alexandra Canal Contamination 7. Inspection, Monitoring and Reporting Regular compliance activities, such as inspections and observations will be undertaken for the purposes of this ACCMP when construction activities adjacent to the Alexandra Canal are being undertaken. These activities will focus on the implementation of management documents through the Construction Area Plans. Subcontractor works will be included in regular inspections, observations, monitoring and audits as appropriate. Table 7 below is extracted from the Construction Soil and Water Quality Sub Plan (M5N-ES-PLN- PWD-0005) (CDS-JV, 2016d) and outlines the required frequency and responsibility of inspections and reporting relating to sediment and drainage controls.. If site workers suspect sediment has been disturbed as a result of the Project the CDS Environment Advisor must be notified to determine if any corrective actions should be undertaken. Where it is confirmed that bed sediments have been disturbed the monitoring activities detailed in Table 6 above will be undertaken. Table 7: Project controls associated with potential disturbance of Alexandra Canal sediments Item Frequency Standards Reporting Responsibility Inspections Pre-work inspection Prior to ground disturbing activities in new worksite to be exposed Appropriate controls are installed in accordance with the ESCP. Environment Inspection Checklist Land Disturbance Permit Environmental Advisor Site inspection Daily No mud tracking off-site; check main exit/entry points and material on public roads Haul road integrity to be maintained Site Supervisors Daily Diary Site Supervisor Site inspection Prior to Projectwide shut down of greater than 96 hours Installed erosion and sediment controls are effective Environment Inspection Checklist Environmental Advisor Site inspection Weekly Compliance with the requirements of this Plan and RMS G38 Environment Inspection Checklist Environmental Advisor Observations by Management (CEMP Expectation 3.4) Monthly Compliance with the requirements of this Plan Managemen t Inspection Checklist Project Manager Event based inspections To be conducted after receiving >20mm over a 24hr period at active exposed work sites Installed erosion and sediment controls are effective Environment Inspection Checklist Site Supervisor Environmental Advisor WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 19 of 28

67 Alexandra Canal Contamination Item Frequency Standards Reporting Responsibility Monitoring Weather monitoring Daily Rainfall Environmen t Advisor to report to Site Supervisor Environmental Advisor Prevailing wind and rainfall conditions and weather forecast from Bureau of Meteorology to be reviewed. Daily Extreme weather: Winds >25 km/hr Rain >20mm over a 24hr period Environmen t Advisor to report to Site Supervisor Environmental Advisor Construction sediment basin water quality prior to offsite discharge Prior to Planned discharge Tested, treated, discharged, recorded and reported to meet the requirements of Project EPLs. Permit to discharge Environmental Advisor Construction Water Treatment Plant water quality prior to offsite discharge Prior to Planned discharge Tested, treated, discharged, recorded and reported to meet the requirements of the Project EPLs. Permit to discharge Environmental Advisor WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 20 of 28

68 8. Review Alexandra Canal Contamination Plan revisions and performance revisions will be undertaken as per Part B Element 12 of the CDS- JV CEMP (CDS, 2016a). WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 21 of 28

69 Alexandra Canal Contamination 9. References Aurecon Jacobs Joint Venture 2017, WestConnex New M5 Stormwater Drainage Report, Projectwide Stormwater Drainage, 16 February 2017, Reference: M5N-AJV-DPK DR ANZECC/ARMCANZ, 2000, Australian and New Zealand Guidelines for Fresh and Marine Water Quality. Australian and New Zealand Environment and Conservation Council and Agriculture and Resource Management Council of Australia and New Zealand, Paper No 4, Canberra. AECOM 2015a, WestConnex New M5 Technical Working Paper: Contamination, AECOM Australia Pty Ltd, November AECOM 2015b, WestConnex New M5 Environmental Impact Statement, AECOM Australia Pty Ltd, November AECOM 2016, WestConnex New M5 Submissions and Preferred Infrastructure Report, AECOM Australia Pty Ltd, March Birch, G.F. and McCready, S., Sydney Water, Alexandra Canal, Sediment Quality Project. The Environmental Geology Group. University of Sydney, Prepared for Sydney Water Corporation, May CDS-JV 2016a, WestConnex New M5 Construction Contaminated Land, CPB Contractors Dragados Samsung Joint Venture, 17 November 2016, Reference: M5N-ES-PLN-PWD CDS-JV 2016b, WestConnex New M5 Construction Environmental, CPB Contractors Dragados Samsung Joint Venture, 23 August 2016, Reference: M5N-ES-PLN-PWD CDS-JV 2016c, WestConnex New M5 Construction Compound Ancillary Facilities Management Plan, 11 February 2016, Reference: M5N-ES-PLN-PWD CDS-JV 2016d, WestConnex New M5 Construction Soil and Water Quality Sub-Plan, 10 February 2016, Reference: M5N-ES-PLN-PWD EPA 1997, State of the Environment Report. NSW EPA, Sydney. Simpson, Batley & Chariton 2013, Revision of the ANZECC/ARMCANZ Sediment Quality Guidelines, CSIRO Land and Water Science Report 08/07. Simpson SL & Batley GE 2016, Sediment Quality Assessment: A Practical Guide, CSIRO, Bangor, NSW. Simpson SL, Batley GE, Chariton AA, Stauber JL, King CK, Chapman JC, Hyne RV, Gale SA, Roach AC, Maher WA 2005, Handbook for Sediment Quality Assessment, CSIRO, Bangor, NSW. University of Queensland, 2002, Sediment-Water Column Interactions in Alexandra Canal, Sydney. University of Queensland, Centre for Marine Studies. Prepared for Sydney Water Corporation. Woodward-Clyde, 1998, Upper Alexandra Canal sediment management study. Prepared for Sydney Water Corporation. Final report, December WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 22 of 28

70 Alexandra Canal Contamination Appendix A Glossary of Terms Term / Abbreviation ACCMP AFMP AJJV Definition Alexandra Canal Contamination Ancillary Facilities Aurecon Jacobs Joint Venture ANZECC/ARMCANZ Australian and New Zealand Environment and Conservation Council / Agriculture and Resource Management Council of Australia and New Zealand CCLMP CDS-JV CEMP CIC Construction Contaminated Land CPB Dragados Samsung Joint Venture Construction Environmental Concrete injected columns CLM Act Contaminated Land Management Act 1997 CoA Construction Area Construction Area Plan (CAP) DDT DPE EIS EMM EPA Condition of Approval A separable portion of work that is identified early in construction planning to help drive early definition of construction methodology and alignment of design activities. Work Areas should be listed in the overall construction methodology. The planning document for a work area is called a Construction Area Plan. The main document prepared during the construction planning for that work area. Includes construction methodology, risk assessment, constructability reviews and Work Pack listing. Dichlorodiphenyltrichloroethane Department of Planning and Environment Environmental Impact Statement Environmental Management Measures Environment Protection Authority EP&A Act Environmental Planning and Assessment Act 1979 EPBC Act Environment Protection and Biodiversity Conservation Act 1999 EPL Infrastructure Approval ISQG LTP LT-SEMP PAH Environment Protection Licence Approval under the Environmental Planning & Assessment Act 1979 for SSI 6788 signed by the Minister for Planning on 20 April 2016 Interim Sediment Quality Guideline Load transfer platform Long Term-Site Environmental Polycyclic aromatic hydrocarbons WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 23 of 28

71 Alexandra Canal Contamination Term / Abbreviation PCBs Definition Polychlorinated biphenyls POEO Act Protection of the Environment Operations Act 1997 Project Project requirements RAP REMM SEARS SMC SPIR SSI TOC WCX New M5 WDA WestConnex New M5 Project The project requirements include all CoA (pursuant to Infrastructure Approval), REMMs, EMMs, SWTC and EPL. Remediation Action Plan Revised Environmental Management Measure (from the SPIR) Secretary s Environmental Assessment Requirements Sydney Motorway Corporation Submission [and Preferred Infrastructure] Report State Significant Infrastructure Total organic carbon WestConnex New M5 WestConnex Delivery Authority, now Sydney Motorway Corporation (SMC) WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 24 of 28

72 Alexandra Canal Contamination Appendix B Declaration of Remediation and Remediation Order WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 25 of 28

73 3/22/2018 Environment Protection Authority Note: On 21 March 2012 Sydney Water provided an update on actions required under this Order. Environment Protection Authority Remediation order Section 23 of the Contaminated Land Management Act 1997 HO / Area #3151 Service: By Registered Mail to Registered Office and Principal Place of Business Sydney Water Corporation (ABN) Bathurst Street SYDNEY NSW 2000 Attention: Managing Director Background A. On 25 August 2000 the Environment Protection Authority ( EPA ) declared the bed sediments of the Alexandra Canal between Huntley Street, Alexandria and the junction of Alexandra Canal with the Cooks River at Mascot, being Lot 1 DP , Lot 1 DP and Lot 3 DP ( the site ) within the local government areas of Botany Bay, Marrickville and South Sydney as a remediation site. B. The bed sediments at the site have been found to be contaminated with chlorinated hydrocarbons including organochlorine pesticides (chlordane, total DDT and dieldrin), polychlorinated biphenyls (PCBs) and metals ( the contaminants ) in such a way as to present a significant risk of harm to human health and the environment. C. The EPA has considered the matters in s.9 of the Contaminated Land Management Act ( the Act ) and found that the contamination at the site presents a significant risk of harm because Harm is being caused to the benthic biota that is in contact with the contaminants in the sediments; Harm may be caused to humans from the increased risk associated with the consumption of contaminated fish; and Disturbance of the sediments would mobilise the contaminants and hence increase the risk of harm. D. The EPA has considered all submissions made as to whether an order should be made. E. There are no other persons who are required to be served with a copy of this order for the purposes of s.24(3) of the Act. Action required by this order By this order, the EPA orders Sydney Water Corporation ( Sydney Water ), being the owner of the site, to do the following: 1. Sydney Water must refrain from carrying out, or from causing, permitting or allowing its agents, contractors, licensees or lessees from carrying out, any works or activities on the bed sediments of the site that would result in the disturbance, or further disturbance, of the bed sediments except as provided by this Order. Examples of the types of works or activities that may come within the scope of this Order include construction and maintenance work relating to dredging activities or boating facilities (such as piers, wharves, slipways or marinas). 2. Prior to the conduct of works or activities coming within the terms of requirement 1, Sydney Water must prepare and submit for the EPA s approval a written plan directed at minimising the disturbance and migration of contaminated sediments at the site. The EPA may approve the plan or aspects of 1/4

74 3/22/2018 Environment Protection Authority the plan as submitted or approve the plan subject to a requirement that additional mitigation measures must be implemented. This provision is waived for emergency works that are required to protect the safety or property of persons involved in the emergency (eg repairs to collapsed canal wall during flood). In this case the EPA must be notified of the situation and the actions being undertaken. 3. Any works or activities the subject of an approved plan must be performed in accordance with the plan. 4. The plan submitted to the EPA for its approval must be prepared in accordance with the EPA publication titled Guidelines for Consultants Reporting on Contaminated Sites, dated November 1997, as it relates to investigation and or remedial action plans. 5. Sydney Water must also, as far as reasonable, ensure that other persons who may carry out works or activities on the bed sediments of the site are made aware of this Order and are advised not to do anything inconsistent with the Order. Without limiting what Sydney Water is required to do to comply with this requirement, it must a) develop and implement an information campaign to alert people near the site to the requirements of this Order; b) erect signs along the length of the canal at 1 kilometre intervals to alert users of the canal about the requirements of this Order; c) liaise with and provide information to relevant councils about the requirements of this Order. 6. A copy of the documentation recording the information campaign must be provided to the EPA by (date to be inserted). [SIGNED] CAROLYN STRANGE Director Contaminated Sites Department of Environment and Conservation (by Delegation) Date: 10 May 2004 NOTE: Relationship to other regulatory instruments This Order does not affect the requirement to comply with the provisions of any applicable environmental planning instruments, pollution reduction programs or the provisions of any other environmental protection legislation administered by the EPA. Failure to comply with this Order It is an offence to fail to comply with a remediation order. Heavy penalties may be imposed if you are convicted of this offence by the Land and Environment Court. Information recorded by the EPA Section 58 of the Contaminated Land Management Act 1997 requires the EPA to maintain a public record. A copy of this remediation order will be included in the public record. Information recorded by councils Section 59 of the Act requires the EPA to notify the relevant local council as soon as practicable after an order is made. The council is then required to note on its planning certificate issued pursuant to s.149(2) of the Environmental Planning and Assessment Act that the land is currently subject to a remediation order. The EPA is required to notify council as soon as practicable when the order is no longer in force and the notation on the s.149(2) certificate can be removed. Guidelines made by the EPA Contaminated Sites: Guidelines for Assessing Service Station Sites, December 1994 Contaminated Sites: Guidelines for the vertical mixing of soil on former broad-acre agricultural land, January 1995 (vertmix.pdf, 149kb, requires acrobat reader) Contaminated Sites: Sampling Design Guidelines, September /4

75 3/22/2018 Environment Protection Authority Contaminated Sites: Guidelines for Assessing Banana Plantation Sites, October 1997 Contaminated Sites: Guidelines for Consultants Reporting on Contaminated Sites, November 1997 Contaminated Sites: Guidelines for the NSW site auditor scheme, June 1998 Contaminated Sites: Guidelines on Significant Risk of Harm from Contaminated Land and the Duty to Report, April 1999 (sroh.pdf, 164kb, requires acrobat reader) Note: All references in the EPA's contaminated sites guidelines to the Australian Water Quality Guidelines for Fresh and Marine Waters (ANZECC, November 1992) are replaced as of 6 September 2001 by references to the Australian and New Zealand Guidelines for Fresh and Marine Water Quality (ANZECC and ARMCANZ, October 2000), subject to the same terms. Guidelines approved by the EPA ANZECC publications Australian and New Zealand Guidelines for the Assessment and Management of Contaminated Sites, published by Australian and New Zealand Environment and Conservation Council (ANZECC) and the National Health and Medical Research Council (NHMRC), January 1992 Australian Water Quality Guidelines for Fresh and Marine Waters, Australian and New Zealand Environment and Conservation Council (ANZECC), November 1992, which are only approved for the purposes of contaminated site assessment, investigation, remediation and site auditing under the Contaminated Land Management Act (or other relevant legislation) commenced before September 2001 Australian and New Zealand Guidelines for Fresh and Marine Water Quality, Australian and New Zealand Environment and Conservation Council and Agriculture and Resource Management Council of Australia and New Zealand, Paper No 4, October 2000 EnHealth publications (formerly National Environmental Health Forum monographs) Composite Sampling, by Lock, W. H., National Environmental Health Forum Monographs, Soil Series No.3, 1996, SA Health Commission, Adelaide Environmental Health Risk Assessment: Guidelines for assessing human health risks from environmental hazards, Department of Health and Ageing and EnHealth Council, Commonwealth of Australia, June 2002 National Environment Protection Council publications National Environment Protection (Assessment of Site Contamination) Measure 1999 The Measure consists of a policy framework for the assessment of site contamination, Schedule A (Recommended General Process for the Assessment of Site Contamination) and Schedule B (Guidelines). Schedule B guidelines include: B(1) Guideline on Investigation Levels for Soil and Groundwater B(2) Guideline on Data Collection, Sample Design and Reporting B(3) Guideline on Laboratory Analysis of Potentially Contaminated Soils B(4) Guideline on Health Risk Assessment Methodology B(5) Guideline on Ecological Risk Assessment B(6) Guideline on Risk Based Assessment of Groundwater Contamination B(7a) Guideline on Health-Based Investigation Levels B(7b) Guideline on Exposure Scenarios and Exposure Settings B(8) Guideline on Community Consultation and Risk Communication B(9) Guideline on Protection of Health and the Environment During the Assessment of Site Contamination B(10) Guideline on Competencies & Acceptance of Environmental Auditors and Related Professionals Other documents Guidelines for the Assessment and Clean Up of Cattle Tick Dip Sites for Residential Purposes, NSW Agriculture and CMPS&F Environmental, February 1996 Australian Drinking Water Guidelines, NHMRC & Agriculture and Resource Management Council of Australia and New Zealand, /4

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77 3/22/2018 EPA - Declaration of Remediation Site No Environment Protection Authority Declaration of remediation site Section 21 of the Contaminated Land Management Act 1997 Declaration Number / Area # 3151 The Environment Protection Authority (EPA) declares the following land to be a remediation site under the Contaminated Land Management Act 1997 ( the Act ): 1. Land to which this declaration applies ("the site") The bed of the Alexandra Canal between Huntley Street, Alexandria and the junction of Alexandra Canal with the Cooks River at Mascot, being Lot 1 DP , Lot 1 DP and Lot 3 DP within the local government areas of Botany Bay, Marrickville and South Sydney. 2. Nature of the substances causing the contamination ( the contaminants ): Chlorinated hydrocarbons including organochlorine pesticides (chlordane, total DDT and dieldrin), polychlorinated biphenyls (PCBs) and metals in the bed sediments of the Canal. 3. Nature of harm that the substance may cause: The EPA has considered the matters in s.9 of the Act and found that: The contaminants would not be expected to occur naturally at this site or in the elevated concentrations found; Environmental harm has occurred and there is a lack of benthic (sediment dwelling) biota at the site; The concentration of PCBs present in fish taken from the canal exceed the maximum residue levels as set by the National Food Authority; Concentrations of the contaminants in fish tissue and sediments greatly exceed applicable guidelines; PCBs, organochlorine pesticides and lead are classifiable as human carcinogens; PCBs and organochlorine pesticides have bioaccumulated in fish tissue and therefore there is a potential for tissue concentrations of these chemicals to increase as the chemical is transferred from one trophic level to the next (i.e. biomagnification); Changes in the approved use of the land around the canal increases the risk of harm; There are indications that off-site migration of the contaminants has occurred into the Cooks River. Further off site migration into Botany Bay is possible; and Disturbance of the sediments through use of the canal would mobilise the contaminants and hence increase the risk of harm. The EPA has found that the site is contaminated with chlorinated hydrocarbons and metals in such a way as to present a significant risk of harm to human health and the environment. There is a significant risk that: Harm is being caused to the benthic biota that is in contact with the contaminants in the sediments; Harm may be caused to humans from the increased risk associated with the consumption of contaminated fish; and Disturbance of the sediments would mobilise the contaminants and hence increase the risk of harm. 4. Further action under the Act The making of this declaration does not prevent the carrying out of a voluntary remediation of the site and any person may submit a voluntary remediation proposal for the site to the EPA. If the 1/2

78 3/22/2018 EPA - Declaration of Remediation Site No proposal satisfies the requirements of s.26 of the Act, the EPA may agree not to issue a remediation order to the person or persons bringing the proposal. 5. Submissions invited The EPA advises that the public may make written submissions to the EPA on: Whether the EPA should issue a remediation order in relation to the site or Any other matter concerning the site. Submissions should be made in writing to: Director Contaminated Sites Environment Protection Authority PO Box A290 SYDNEY SOUTH NSW 1232 or faxed to: by not later than 22 September (signed 25 August 2000) CATHY DYER Director Contaminated Sites ENVIRONMENT PROTECTION AUTHORITY (by Delegation) Date: 25 August 2000 NOTE: Remediation order may follow If remediation of the site or part of the site is required, the EPA may issue a remediation order under s.23 of the Act. Variation/Revocation This declaration remains in force until it is otherwise varied or revoked. A declaration may only be revoked when the EPA does not have reasonable grounds to believe that land is contaminated in such as way as to present a significant risk of harm (s.44 of the Act). Information recorded by the EPA S.58 of the Contaminated Land Management Act 1997 requires the EPA to maintain a public record. A copy of this remediation declaration will be included in the public record. Information recorded by councils S.59 of the Act requires the EPA to give a copy of this declaration to the relevant local council. The council is then required to note on its planning certificate issued pursuant to s.149 (2) of the Environmental Planning and Assessment Act that the land is currently within a declaration area. The EPA is required to notify council as soon as practicable when the declaration is no longer in force and the notation on the s.149 certificate removed. 2/2

79 Alexandra Canal Contamination Appendix C Erosion and Sediment Control Plan WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 27 of 28

80 PO.Box 1098, Bowral, NSW Suites 7 & 8, Station Street Bowral NSW (t) (f) reception@seec.com.au

81 PO.Box 1098, Bowral, NSW Suites 7 & 8, Station Street Bowral NSW (t) (f) reception@seec.com.au

82 PO.Box 1098, Bowral, NSW Suites 7 & 8, Station Street Bowral NSW (t) (f) reception@seec.com.au

83 PO.Box 1098, Bowral, NSW Suites 7 & 8, Station Street Bowral NSW (t) (f) reception@seec.com.au

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85 PO.Box 1098, Bowral, NSW Suites 7 & 8, Station Street Bowral NSW (t) (f) reception@seec.com.au

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95 Alexandra Canal Contamination Appendix D Pollution Incident Response Summary WestConnex New M5 M5N-ES-PLN-PWD-0044 Revision 03 Revision Date: 30 May 2018 Commercial in Confidence Printed copies are uncontrolled Page 28 of 28

96 Pollution Incident Response Summary Project Name: WestConnex New M5 Project number: Document number: M5N-ES-PLN-PWD-0034 Revision date: 29/07/2016 Revision: 00 Document Approval Rev. Date Prepared by Reviewed by Recommended by Approved by Remarks 00 29/07/16 CDS-JV For display on project s website Signature:

97 Pollution Incident Response Summary Details of Revision Amendments Document Control The Project Director is responsible for ensuring that this Plan is reviewed and approved. The Support Services Director is responsible for updating this Plan to reflect changes to environmental legal and other requirements, as required. Amendments Any revisions or amendments must be approved by the Project Director before being distributed or implemented. Revision Details Revision Details 00 For display on project s website WestConnex New M5 M5N-ES-PLN-PWD-0034 Revision 00 Revision Date: 29 July 2016 Commercial in Confidence Printed copies are uncontrolled Page 2 of 5

98 Pollution Incident Response Summary Contents 1. Introduction Authorities to Notify Community notifications...5 WestConnex New M5 M5N-ES-PLN-PWD-0034 Revision 00 Revision Date: 29 July 2016 Commercial in Confidence Printed copies are uncontrolled Page 3 of 5

99 Pollution Incident Response Summary 1. Introduction The CPB Contractors Dragados Samsung Joint Venture (CDS-JV) has developed this Pollution Incident response Summary and made it publicly available in accordance with clause 98D(2) and 98D(3) of the Protection of the Environment Operations (General) Regulation 2009 for Environment Protection Licence (EPL) No and No Authorities to Notify In the event of a pollution incident associated with the project that causes or threatens material harm to the environment as defined in Section 147 of the Protection of the Environment Operations Act 1997, CDS-JV will notify the following Authorities. The Authorities must be notified in the order listed below Step Authority Name Contact After Hours Contact 1. Emergency Services Fire and Rescue NSW Police NSW Ambulance Service 000* N/A * Only ring 000 if the incident presents an immediate threat to human health or property and requires Emergency Services. If the incident does not require an initial combat agency or once the 000 call has been made, notify as listed below 2. EPA Pollution Line N/A 3. Ministry of Health (From a landline, will direct you to your local Public Health Unit) Public Health Unit Randwick * Public Health Unit Camperdown * * After hours calls to switch board - ask for Public Health Officer on call 4. WorkCover Information Line Local Council Rockdale City Council Will divert to after-hours service. Canterbury-Bankstown Council (merger of Canterbury City Council and Bankstown City Council) Georges River Council (merger of Hurstville City Council and Kogarah City Council) Inner West Council (merger of Marrickville Council, Ashfield Council and Leichhardt Municipal Council) Will divert to after-hours service. Sydney City Council Fire and Rescue Operational Communications WestConnex New M5 M5N-ES-PLN-PWD-0034 Revision 00 Revision Date: 29 July 2016 Commercial in Confidence Printed copies are uncontrolled Page 4 of 5

100 Pollution Incident Response Summary 1.2 Community notifications In the event of a potential or actual pollution incident whether or not the local stakeholders are notified depends on the incident type and severity. Community stakeholder notification is required for events that: Will result in unacceptable health risk to community stakeholders immediately and at the time of the pollution incident, where community stakeholders are present (e.g. residing in their houses or using adjacent recreational facilities at the time of the incident) Will result in an unacceptable health risk to the community for instances where pollution of an area that is to be used by community members in the days and weeks following the incident (until such time when the pollution hazard is removed). These community stakeholders may not be present during the incident but might be present following the incident. An unacceptable impact is defined as one which has the potential to adversely affect the health of a member of the community. This takes into consideration immediate health impacts (that occur during the incident) and health risks in the period following the incident. The Environment and Sustainability Manager, in consultation with the applicable Project Manager and the Community Relations Manager will determine if community notification is required, the mechanisms by which the notification is made and the extent of the notification. If appropriate, notification will include specific information to minimise the risk of harm, e.g. instructions to close the windows and doors, or avoid contact with creeks/waterways. The Community Relations Manager will coordinate the notification of surrounding premises and residents. Communication methods may include: Face to face and/or telephone contact; Letterbox drops; Update to project website; distribution of messages; Provide protective fencing and barricading to prevent community stakeholders from entering into an affected area; and Use of technology such as Variable Message / Motorway signage and radio communications. Surrounding residents and other land users may also need to be notified at the direction of the Emergency Services Site Controller, the EPA, or the Ministry of Health, depending on the nature and extent of the incident. WestConnex New M5 M5N-ES-PLN-PWD-0034 Revision 00 Revision Date: 29 July 2016 Commercial in Confidence Printed copies are uncontrolled Page 5 of 5

101 Construction Contaminated Land Appendix D Manage Contaminated Land Procedure WestConnex New M5 M5N-ES-PLN-PWD-0033 Revision 03 Revision Date: 18 June 2018 Commercial in Confidence Printed copies are uncontrolled Page 48 of 48

102 Manage Contaminated Land Procedure Project Name: WestConnex New M5 Project number: Document number: M5N-ES-PRC-PWD-0036 Revision date: 06/07/2016 Revision: 01 Document Approval Rev. Date Prepared by Reviewed by Recommended by Approved by Remarks 00 08/04/ /07/16 Signature:

103 Manage Contaminated Land Procedure Details of Revision Amendments Document Control The Project Director is responsible for ensuring that this Procedure is reviewed and approved. The Support Services Director (SSD) is responsible for updating this procedure to reflect changes to the Project, legal and other requirements, as required. Amendments Any revisions or amendments must be approved by the Project Director before being distributed or implemented. Revision Details Revision Details 00 Prepared for internal review 01 Unexpected Discovery of Contaminated Land Flowchart updated WestConnex New M5 M5N-ES-PRC-PWD-0036 Revision 01 Revision Date: 06 July 2016 Commercial in Confidence Printed copies are uncontrolled Page 2 of 3

104 Manage Contaminated Land Procedure Contents This Manage Contaminated Land Procedure has been produced from CPB Management System documents and project specific information documents. Each of these documents are available individually from the Project Management System and Incite. These documents are presented as one procedure here to support the onsite implementation of these procedures and to facilitate the communication of project specific requirements. This Manage Contaminated Land Procedure includes: Manage Contaminated Land (MSID-2-245) Unexpected Discovery of Contaminated Land Flowchart (M5N-ES-FLC-PWD-0001) Unexpected Discovery of Contaminated Land Information Document (M5N-ES-INF-PWD- 0002) WestConnex New M5 M5N-ES-PRC-PWD-0036 Revision 01 Revision Date: 07 July 2016 Commercial in Confidence Printed copies are uncontrolled Page 3 of 3

105 Manage Contaminated Land Purpose This procedure describes how to manage contaminated land. This refers to land that contains substances that are actually or potentially hazardous to health or the environment, often resulting from commercial, industrial and agricultural activities. Contaminants may include: Hydrocarbons Polyaromatic hydrocarbons PCBs and pesticides Heavy metals such as lead, arsenic, cadmium and mercury Radioactive waste Unexploded ordnance Asbestos Biologically pathogenic materials and waste. Procedure 1 Develop and Monitor Contaminated Land Management Strategy Accountability: Environment Manager/Representative Ensure testing of contaminated land is conducted by a trained and competent person, and a management strategy developed. Ensure contaminated land is handled, stockpiled, reused and/or disposed of as per the project's contamination management strategy. 2 Include Controls in Construction Area Plan and Work Pack(s) Accountability: Senior Project Engineer Ensure contaminated land risks are considered as part of the development of Construction Area Plans. Refer to Procedure: Develop Construction Area Plan. Ensure Work Packs include relevant environmental control information including a Site Environment Plan where required. Refer to Procedure: Develop Work Pack. Title: Manage Contaminated Land ID: MSID Version: 4.0 Date Published: 05/04/2016 Management System - Uncontrolled Document when Printed Page 1 of 2

106 3 Undertake Work Accountability: Supervisor Ensure all movement of contaminated materials is tracked using Tool: Materials Tracking Form. Ensure water runoff from contaminated land and stockpiles is contained, treated or disposed to ensure there is no pollution of land or waterways. Ensure all vehicles, plant and other machinery that have been in contact with contaminated soil are decontaminated prior to leaving site. Stop work whenever unexpected contaminated materials are discovered or suspected until adequate controls are put in place to undertake the work. Accountability: Worker Notify the Supervisor and/or Environment Manage/Representative immediately if unexpected contaminated material is suspected or discovered. 4 Perform Task Observations Accountability: Line Manager, SH&E Manager or Subcontractor Supervisor Conduct task observations as per Project schedule to ensure ongoing effectiveness of environmental control measures. Refer to Procedure: Conduct Task Observation. Title: Manage Contaminated Land ID: MSID Version: 4.0 Date Published: 05/04/2016 Management System - Uncontrolled Document when Printed Page 2 of 2

107 Unexpected Discovery of Contaminated Land Flowchart MANAGEMENT RESPONSIBILITY PRIOR TO MOBILISATION TO SITE OR COMPOUND 1. A Phase 1 Investigation must be undertaken and a Report must be developed which includes the findings of the assessment. If the risk of contamination is determined to be moderate (or higher) a Phase 2 Investigation needs to be undertaken. 2. A Phase 2 investigation must be undertaken prior to the commencement of any activities on site. The findings of this investigation will be documented in a Report which provide a detailed analysis on presence and concentration of contamination, ASS/PASS and asbestos. Strategies outlined in this Report will then be built into the Construction Area Plans and subsequent Work Area Packs. 3. If a Remediation Action Plan is required, the Project Contamination Auditor will be required to review and approve this document before it can be implemented. 4. Refer to the Manage Contamination Flowchart for further information. Project Manager Environmental Manager HS Manager Environmental Advisor OBSERVATION OF SOIL DURING EXCAVATION WORKS Observe soil during excavations to check for evidence of contamination. Refer to the attached Contamination Information Document (M5N-ES-INF-PWD-0002) for examples of materials that could indicate presence of contamination. All personnel NO EVIDENCE OF CONTAMINATION OBSERVED If observations do not indicate the presence of contamination then excavation works can continue. INTERNAL HOLD POINT: EVIDENCE OF CONTAMINATION OBSERVED If observations indicate presence of potential contamination then STOP ALL WORK in the immediate area and prevent further activity in the area. Notify the Site Supervisor and Environment Advisor and cordon off area. Do not touch or disturb the item/ material. Anyone who has come into contact with the material must wash down immediately. Delineate the find from the rest of the worksite. Inform the Project Manager regarding the potential contamination find. The following detail should be provided: The location of the potential contamination Visual appearance Odour (if any) Depth Surrounding material and works being undertaken at the time of discovering the material Site Supervisor Site Engineer Project Manager (to be notified) HS Manager (to be notified) Environment Manager (to be notified) ADDITIONAL ASSESSMENT If required, the Project Manager is to obtain assistance from a suitably qualified contamination specialist in identifying the potential hazard to human health or the environment in accordance with NSW regulatory requirements; this may include sampling and laboratory analysis. Project Manager WHS Manager Project Environment Manager Environmental Scientist/ Engineer (if required) MANAGEMENT AND IMPLEMENTATION STRATEGY 1. Seek and follow advice from Contamination Specialist. 2. Develop a plan for managing and/or remediating area. 3. Implement approved management strategies recommended by the Contamination Specialist. If the material is to be removed from site, it must be undertaken in accordance with the NSW EPA Waste Classification Guidelines (EPA, 2014). 4. EM must complete incident reporting in accordance with the CEMP. Project Manager WHS Manager Project Environment Manager Environmental Manager Site Supervisor INTERNAL HOLD POINT RELEASE Once the contaminated find has been addressed, the Project Manager must approve the recommencement of works within this vicinity. This HOLD POINT RELEASE must be documented in the incident report by the Environmental Manager. Project Manager CONTINUE EARTHWORKS This document supports the CPB Manage Contaminated Land Procedure (MSID-2-245) M5N-ES-FLC-PWD-0001 Rev 01 Updated 5 July 2016: MM

108 Unexpected Discovery of Contaminated Land Information Document Nature of Unexpected Contamination Based upon review of the Environmental Impact Statement for the project (AECOM 2015) the following types of unexpected contamination may be encountered: Contamination Information What to look out for Uncontrolled fill areas consisting of various materials Landfill waste that has impacted soils and groundwater Subsurface fuel and lubricant infrastructure Materials which could be present include (but not limited to) asbestos, plastic, brick, ceramic, metals fragments. Soils stained by petroleum hydrocarbons, industrial solvents and electrical transformer fluids. The materials listed above may also be found in the groundwater profile. This may have created hazards which could include land fill gases such as methane, carbon dioxide, hydrogen sulphide and ammonia; biological wastes; pesticide and chrome arsenate impacted timbers as well as asbestos. Plastic, brick, ceramic, metals fragments are present and soils maybe stained by petroleum hydrocarbons, industrial solvents, electrical transformer fluids and heavy metals. Infrastructure could include underground storage tanks and lines. This infrastructure may have impacted the surrounding soils and groundwater. Leaking sewerage lines This could have impacted the soil and groundwater profile. Area would be contaminated with faecal coliforms, ammonia, petroleum hydrocarbons, industrial solvents and heavy metals. Service pits and pipes impacted by fuels, lubricants and industrial chemicals These liquid contaminants may have accumulated in pathways and voids. Acid sulphate soils (ASS) ASS may be buried under fill or soil. Illegal dumping of waste at the This may include building, construction site demolition and general waste. Asbestos cement fragments or other potentially asbestos containing materials (Figure 1) Odorous or stained soil Odorous material High proportion of waste materials or building debris Buried chemical drums or containers (Figure 2) Oils and groundwater may smell like sewerage Tarry or ashy material A yellow and/or red mottling in the soil profile (Figure 3) Brightly or unusually coloured material Various materials (Figure 4) Personal Protective Equipment Prior to any contamination investigation / management, appropriate personal protective equipment (PPE) is to be worn as per the relevant Safety Data Sheet(s) (SDS) and/or Work Method Statement (WMS). This may include, but not be limited to: Eye goggles; Face mask; Rubber boots; Rubber gloves; and Work clothes (i.e. long sleeve shirt/pants and steel capped boots). For instance where high risk environments are encountered for investigation (e.g. confined spaces, noxious gases, generation of air borne asbestos) a multitude of PPE would apply (e.g. facial masks, respirators, full body protective suites, etc). In all cases, the selected PPE should be relevant to the investigation and contaminant/s and worn in a manner that adheres to manufacturer s instructions and follow relevant safety protocols for use). Acid Sulfate Soils (ASS) ASS are naturally occurring soils, sediments or organic substrates that are formed under waterlogged conditions in coastal areas. When exposed to air after being disturbed, soils containing iron sulfides produce sulfuric acid and often release toxic quantities of iron, aluminum and heavy metals. If these are encountered, carry out activities in accordance with the Unexpected Discovery of Contaminated Land Flowchart (M5N-ES-FLC-PWD-0001) and refer to the CPB Manage Acid Sulfate Soil Procedure (MSID-2-241) for further information and guidance. Asbestos If Asbestos is encountered, carry out activities in accordance with the Unexpected Discovery of Contaminated Land Flowchart (M5N-ES-FLC-PWD-0001) and refer to the CPB Manage Work with Asbestos Procedure (MSID ) for further information and guidance. Record Keeping Record keeping associated with the Manage Contaminated Land procedure includes: Figure 1 Excavated asbestos and building material Figure 3 Acid Sulfate Soil Contamination Testing Results; Contamination Validation Report other Contamination Specialist reports (as applicable); and Waste Disposal Records (as applicable). If unexpected contaminated land is encountered In the event that unexpected contaminated land is discovered, refer to the Unexpected Discovery of Contaminated Land Flowchart (M5N-ES-FLC-PWD-0001) for guidance. Figure 2 Discovery of buried chemical container Figure 4 Contaminated excavated material This document supports the CPB Manage Contaminated Land Procedure (MSID-2-245) M5N-ES-INF-PWD-0002 Rev 00 Updated 8 April 2016: MM