Strandline Resources Ltd 22-Jul-2020 Mining Proposal 3 2020 Coburn Sand Coburn Development and Operations M09/102, M09/103, M09/104, M09/105, M09/106, M09/111, M09/112, L09/21 and L09/43 Revision 1 – 22-Jul-2020 Prepared for – Strandline Resources Ltd – ABN: 17 165 036 537 AECOM Mining Proposal 3 2020 Coburn Sand Mining Proposal 3 2020 Coburn Sand M09/102-106, M109/111-112, L09/21 and L09/43 Client: Strandline Resources Ltd ABN: 17 165 036 537 Prepared by AECOM Australia Pty Ltd Level 3, 181 Adelaide Terrace, Perth WA 6004, GPO Box B59, Perth WA 6849, Australia T +61 8 6230 5600 www.aecom.com ABN 20 093 846 925 In association with Strandline Resources Ltd 22-Jul-2020 Job No.: 60577472 AECOM in Australia and New Zealand is certified to ISO9001, ISO14001 AS/NZS4801 and OHSAS18001. © AECOM Australia Pty Ltd (AECOM). All rights reserved. AECOM has prepared this document for the sole use of the Client and for a specific purpose, each as expressly stated in the document. 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Revision 1 – 22-Jul-2020 Prepared for – Strandline Resources Ltd – ABN: 17 165 036 537 AECOM Mining Proposal 3 2020 Coburn Sand Quality Information Document Mining Proposal 3 2020 Coburn Sand Ref 60577472 Date 22-Jul-2020 Prepared by Cassandra House Reviewed by Cliff Bennison Revision History Authorised Rev Revision Date Details Name/Position Signature Linda Kirchner A 01-May-2020 For review Technical Director - Environment Linda Kirchner B 16-Jul-2020 For review Technical Director - Environment Linda Kirchner C 16-Jul-2020 For final review Technical Director - Environment Linda Kirchner 0 22-Jul-2020 Final Technical Director - Environment Revision 1 – 22-Jul-2020 Prepared for – Strandline Resources Ltd – ABN: 17 165 036 537 AECOM Mining Proposal 3 2020 Coburn Sand Table of Contents Mining Proposal Checklist i 1.0 Introduction 1 1.1 Environmental Group Site details 1 1.2 Mining operation description 1 1.2.1 Phase of Mining 1 1.2.2 Commodity mined 1 1.2.3 Estimated commencement and completion dates 1 1.2.4 Tenements (Figure 2) 1 1.2.5 Tenement holder 2 2.0 Proposal Description 5 2.1 Project Summary 5 2.2 Mining 7 2.3 Processing 9 2.3.1 Wet Concentrator Plant Description 9 2.3.2 Mineral Separation Plant Process Description (MSP) 11 2.4 In Pit Tailings Disposal 16 2.5 Mining Contractor’s Compound 16 2.6 Roads 16 2.7 Water Supply and Dewatering 17 2.8 Process Water Dams 18 2.9 Reverse Osmosis Plant 18 2.10 Power Supply and Fuel Storage Facilities 18 2.11 Workshop, Administration Office and Stores area 19 2.12 Landfill and Sprayfields 19 2.13 Site Accommodation 19 2.14 Workforce Requirements 21 2.15 Logistics and Port Facilities 22 2.16 Borrow Pits 22 3.0 Activity details 23 3.1 Additional details for each key mine activity 31 3.1.1 Off Path Tails Storage Facility 31 3.1.2 In Pit Overburden Storage Facility 34 3.1.3 In Pit Tails Storage Facility 36 3.1.4 WCP Process Water Dams 37 3.1.5 MSP Process Water Dam 38 3.1.6 WCP plant site 39 3.1.7 MSP plant site 39 3.1.8 Mining void 40 3.2 Disturbance Envelope 41 4.0 Environmental Legislative Framework 43 4.1 Legal obligations 43 4.1.1 Commonwealth Legislation 43 4.1.2 Western Australian Legislation 43 4.2 Approvals Status 46 5.0 Stakeholder Engagement 48 5.1 Identification of Stakeholders 48 6.0 Baseline Environmental Data 61 6.1 Climate 61 6.1.1 Meteorology 61 6.1.2 Air Quality 62 6.2 Landscape 62 6.3 Materials Characterisation 65 6.3.1 Overburden 65 6.3.2 Tailings 65 6.3.3 Radiation 66 Revision 1 – 22-Jul-2020 Prepared for – Strandline Resources Ltd – ABN: 17 165 036 537 AECOM Mining Proposal 3 2020 Coburn Sand 6.3.4 Soils 66 6.3.5 Geochemical and physical characteristics of subsurface materials and mining waste 67 6.4 Biodiversity 67 6.4.1 Vegetation 68 6.4.2 Conservation Significant Flora and Vegetation 70 6.4.3 Vertebrate Fauna 76 6.4.4 Subterranean Fauna and Short Range Endemics 78 6.5 Hydrology 79 6.5.1 Surface Water 79 6.5.2 Groundwater 79 6.6 Heritage 84 6.7 Environmental Threats 85 6.7.1 Weeds 85 6.7.2 Invasive Fauna Species 85 6.7.3 Dust 86 6.7.4 Bushfire 86 6.7.5 Groundwater Mounding and Drawdown 86 6.7.6 Radiation 87 7.0 Environmental Risk Assessment 88 7.1 Methodology 88 7.2 Risk Identification 88 7.3 Identification of risks regulated by other agencies 89 7.4 Risk Analysis 89 7.5 Risk Evaluation 96 7.5.1 Biodiversity 96 7.5.2 Water Resources 97 7.5.3 Land and Soils 98 7.5.4 Rehabilitation and Mine Closure 99 7.6 Risk Treatment 100 7.6.1 Environmental standards, codes and guidance 100 7.6.2 As low as reasonably Practicable (ALARP) 101 8.0 Environmental Outcomes, Performance Criteria and Monitoring 103 8.1 Environmental Outcomes 103 8.2 Outcomes regulated by another agency 103 8.3 Environmental performance criteria 103 8.4 Reporting 106 9.0 Environmental Management System 107 10.0 Mine Closure Plan 108 11.0 References 109 Appendix A Ministerial Statement 723 A Appendix B Legal Obligations Register B Appendix C Soil and Landform Study C Appendix D Interim Off Path Tails Management Plan D Appendix E Licence to take Water 2 July 2019 E Appendix F Drawdown Impact Management Plan F Appendix G Groundwater Mounding Management Plan G Revision 1 – 22-Jul-2020 Prepared for – Strandline Resources Ltd – ABN: 17 165 036 537 AECOM Mining Proposal 3 2020 Coburn Sand Appendix H Progressive Rehabilitation Programme H Appendix I Dust Management Plan I Appendix J Bushfire Management Plan J Appendix K Risk Register K Appendix L Mine Closure Plan L List of Tables Table 1 Changes made in comparison to 2017 Mine Closure Plan 23 Table 2 Project mining activity details and area of disturbance within tenement M09/102 24 Table 3 Project mining activity details and area of disturbance within tenement M09/103 25 Table 4 Project mining activity details and area of disturbance within tenement M09/104 26 Table 5 Project mining activity details and area of disturbance within tenement M09/105 27 Table 6 Project mining activity details and area of disturbance within tenement M09/106 28 Table 7 Project mining activity details and area of disturbance within tenement M09/111 29 Table 8 Project mining activity details and area of disturbance within tenement M09/112 30 Table 9 Project mining activity details and area of disturbance within tenement L09/21 31 Table 10 Project mining activity details and area of disturbance within tenement L09/43 31 Table 11 key mining activity summary of the interim off-path Tails Storage Facility 33 Table 12 Key mine activity Waste Dump or Overburden storage facility summary 34 Table 13 Key mine activity Tailings or residue storage facility summary 36 Table 14 Key mining activity WCP Process Water Dams summary 37 Table 15 Key mining activity MSP Process Water Dams summary 38 Table 16 Summary of the wet concentrator plant key mining activity at the Coburn Sands Mineral sands mining operation 39 Table 17 Summary of the mineral concentration plant key mining activity at the Coburn Sands Mineral sands mining operation 39 Table 18 The details of the planned mining voids at the Coburn Sands mining operation. 40 Table 19 Tenement summary 41 Table 20 Environmental Legislative Framework 44 Table 21 Stakeholder Consultation 50 Table 22 Climatic Data from Hamelin Pool Weather Station 62 Table 23 Priority Flora Species 72 Table 24 Conservation Significant Fauna Species that are Likely to Occur or May Occur within the Project Area 76 Table 25 Heritage surveys conducted within the Study Area 84 Table 26 Objectives for environmental factors 88 Table 27 Key Risks 88 Table 28 Likelihood Definitions 90 Table 29 Consequence Definitions 90 Table 30 Risk Rating Matrix 92 Table 31 Risk analysis for the Coburn Zircon Project 93 Table 32 Risk Assessment Summary 95 Table 33 Coburn Stands environmental performance criteria. 103 Revision 1 – 22-Jul-2020 Prepared for – Strandline Resources Ltd – ABN: 17 165 036 537 AECOM Mining Proposal 3 2020 Coburn Sand List of Figures Figure 1 Project location 3 Figure 2 Project Tenure 4 Figure 3 Coburn Project simple WCP-MSP block diagram 7 Figure 4 Dozer and mining unit schematic diagrams 9 Figure 5 Coburn WCP process route and process flow sheet 10 Figure 6 Schematic of the Wet Concentrator Plant (WCP) 11 Figure 7 MSP process flow sheet 15 Figure 8 Schematic of the Mineral Separation Plant (MSP) 15 Figure 9 Location of project features 20 Figure 10 Disturbance Envelope 42 Figure 11 Monthly rainfall for Shark Bay Airport weather station (6105) with rainfall for 2019 included (BoM, 2019a) 61 Figure 12 Land systems 64 Figure 13 Vegetation mapping 71 Figure 14 Threatened and Priority Flora Species 74 Figure 15 Threatened and Priority Species – Regional extent 75 Revision 1 – 22-Jul-2020 Prepared for – Strandline Resources Ltd – ABN: 17 165 036 537 AECOM Mining Proposal 3 2020 Coburn Sand i Mining Proposal Checklist Changes from Q Mining Proposal (MP) Y/N/NA Comments previous Page No.