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WATER MANAGEMENT PLAN SNOWY 2.0 – EXPLORATORY WORKS STAGE 2 S2-FGJV-ENV-PLN-0024 DOCUMENT CONTROL A controlled copy of the Water Management Plan will be distributed to the Principal’s Representative, Independent Certifier and other relevant stakeholders and will be available to all Future Generation JV employees in soft copy format through the digital document control management system. The Water Management Plan if printed will be uncontrolled and it will the responsibility of each user to confirm the currency of the plan through the digital document control management system. Document distribution will be controlled in accordance with Future Generation JV Quality System. DOCUMENT REVISION HISTORY Doc No S2-FGJV-ENV-PLN-0024 REVISION DESCRIPTION PREPARED BY REVIEWED BY APPROVED BY DATE - For Approval J Slattery C Buscall 12/04/19 A For Review and R Batch H Chapman 17/04/19 Consultation B Update based on SHL R Batch H Chapman 20/05/19 comments For Review and Consultation C Update from Agency R Batch L Coetzee A Betti 12/07/19 consultation D Update from DPIE R Batch L Coetzee A Betti 16/08/19 comments. For approval 0 Approved R Batch L Coetzee A Betti 30/08/19 | Water Management Plan | Page 2 of 38 CONTENTS 1. ABBREVIATIONS AND DEFINITIONS .................................................................................................. 5 2. INTRODUCTION ..................................................................................................................................... 7 2.1. Purpose .................................................................................................................................................. 7 2.2. Background ............................................................................................................................................ 9 2.3. Environmental Management System................................................................................................. 10 2.4. Relationship to Project Management System and Other Project Plans ........................................ 10 2.5. Purpose and Objectives ..................................................................................................................... 10 2.6. Plan Preparation .................................................................................................................................. 11 2.7. Consultation ......................................................................................................................................... 11 2.8. Construction Activities and Sequencing .......................................................................................... 11 3. ENVIRONMENTAL REQUIREMENTS ................................................................................................. 12 3.1. Legislation ............................................................................................................................................ 12 3.2. Conditions of Approval ....................................................................................................................... 13 3.3. Revised Environmental Management Measures .............................................................................. 15 3.4. Licences and Permits ......................................................................................................................... 15 3.5. Guidelines ............................................................................................................................................ 16 4. EXISTING ENVIRONMENT .................................................................................................................. 16 4.1. Topography and Landscape .............................................................................................................. 16 4.2. Geology ................................................................................................................................................ 17 4.3. Surface Water ...................................................................................................................................... 17 4.4. Groundwater ........................................................................................................................................ 17 5. SITE WATER BALANCE ...................................................................................................................... 20 5.1. Stage 1 – Exploratory Works (Roads) ............................................................................................... 20 5.2. Stage 2 – Exploratory Works .............................................................................................................. 20 5.2.1. Additional Water Consumption .............................................................................................. 23 6. COMPLIANCE MANAGEMENT ........................................................................................................... 25 6.1. Monitoring and Inspection ................................................................................................................. 25 6.2. Auditing ................................................................................................................................................ 25 6.3. Reporting .............................................................................................................................................. 25 APPENDIX A - STAGE 2 - S2-FGJV-ENV-PLN-0025-SURFACE WATER MANAGEMENT PLAN ............ 26 APPENDIX B - STAGE 2 - S2-FGJV-ENV-PLN-0026-GROUNDWATER MANAGEMENT PLAN ............... 27 APPENDIX C - STAGE 2 - S2-FGJV-ENV-PLN-0027-DREDGE MANAGEMENT PLAN ............................ 28 APPENDIX D - STAGE 2 – REVISED ENVIRONMENTAL MANAGEMENT MEASURES ........................... 29 | Water Management Plan | Page 3 of 38 TABLE OF TABLES Table 2-1 - Relationship to other plans .............................................................................................................. 9 Table 3-1 - Conditions of Approval relevant to water management ................................................................ 13 Table 5-1 - Site Water Balance (EIS SWA) ..................................................................................................... 21 Table 5-2 - Site Water Balance updated with accommodation camp ............................................................. 24 TABLE OF FIGURES Figure 2-1 - Timing of Exploratory Works stages-2 ........................................................................................... 8 Figure 4-1 - Existing surface water environment ............................................................................................. 19 Figure 5-1 - EIS Exploratory Works Water Balance flow diagram Month 26 median - rainfall year (EIS SWA)................................................................................................................................................................ 22 | Water Management Plan | Page 4 of 38 1. ABBREVIATIONS AND DEFINITIONS ACRONYM DEFINITION AFL Agreement for Lease AHD Australian Height Datum AIP Aquifer Interference Policy CoA Infrastructure Conditions of Approval (SSI 9208) CEMP Construction Environmental Management Plan CSSI Critical State Significant Infrastructure DMP Dredging Management Plan DOI Department of Industry DP&E NSW Department of Planning and Environment DPI Department of Primary Industries EIS Environmental Impact Statement Exploratory Works EIS Environmental Impact Statement Exploratory Works for Snowy 2.0 EMS Environmental Management Strategy EP&A Act Environmental Planning and Assessment Act 1979 EP&A Regulation Environmental Planning and Assessment Regulation 2000 EPA NSW Environment Protection Authority EPL Environmental Protection Licence ESCP Erosion and Sediment Control Plan EWAR Exploratory Works Access Roads Future Gen Future Generation Joint Venture Future Gen-PMS Project Management System GDE Groundwater Dependent Ecosystem GWMP Groundwater Management Plan KNP Kosciusko National Park Leed Leed Engineering NPWS National Park and Wildlife Services PEP Project Execution Plan POEO Act Protection of the Environment Operations Act 1997 POEO Regulation Protection of the Environment (General) Regulation 2009 QMP Quality Management Plan REMM Revised Environmental Management Measures Submissions Report or Response to Submissions Exploratory Works for Snowy 2.0 RTS SHC Act Snowy Hydro Corporatisation Act 1997 SHL Snowy Hydro Limited SWA Surface Water Assessment | Water Management Plan | Page 5 of 38 ACRONYM DEFINITION SWMP Surface Water Management Plan WAL Water Access Licence WM Act Water Management Act 2000 WM Regulation Water Management (General) Regulation 2011 WMP Water Management Plan (this Plan) WSP Water Sharing Plan | Water Management Plan | Page 6 of 38 2. INTRODUCTION Salini Impregilo, Clough and Lane have formed the Future Generation Joint Venture (Future Gen) to provide the Civil Works Package for Snowy Hydro Limited (SHL) on the Snowy 2.0 Project (the Project). The Project is a pumped hydro project that will increase the generation capacity of the Snowy Mountains Scheme by up to 2,000mW and at full capacity will provide approximately 350,000MW/h of energy storage. The project includes all activities associated with the civil works requirements for the Snowy 2.0 Pumped Hydro-electric Scheme. Intake and outlet structures will be built at both Tantangara and Talbingo Reservoirs, which are in the Kosciusko National