Mount Owen Complex

1 Mount Owen Complex Mining Operations Plan January 2017 - December 2021 Report Number March 2017 Mount Owen Pty Limited Version: Revised Submission Mount Owen Complex Mining Operations Plan January 2017 - December 2021 Report Number March 2017 Revised Submission Page i SLR Consulting Australia Pty Ltd Mount Owen Complex Mining Operations Plan January 2017 - December 2021 PREPARED BY: SLR Consulting Australia Pty Ltd ABN 29 001 584 612 10 Kings Road New Lambton NSW 2305 Australia (PO Box 447 New Lambton NSW 2305 Australia) T: +61 2 4037 3200 F: +61 2 4037 3201 DOCUMENT CONTROL Reference Status Date Prepared Checked Authorised Draft 1 16 November 2016 Mount Owen Complex (MOC) and Tracey Ball Chris Jones Chris Jones Draft 2 20 December 2016 MOC and Tracey Ball Chris Jones Chris Jones Submission 24 January 2017 MOC and Chris Jones Chris Jones Chris Jones Revised Submission 7 March 2017 MOC and Chris Jones Chris Jones Chris Jones Mount Owen Complex Mining Operations Plan January 2017 - December 2021 Report Number March 2017 Revised Submission Page ii SLR Consulting Australia Pty Ltd Mount Owen Complex Mining Operations Plan Name of Mine Mount Owen Complex MOP Commencement Date 01/1/2017 MOP Completion Date 31/12/2021 Name of Authorisation / Authorisation holder(s)

2 Mt Owen Pty Limited Mining Authorisations (Lease/Licence No.) CL383, CL715, ML1355, ML1415, ML1419, ML1453, ML1475, ML1561, ML1608, ML1629, ML1694, AL8 (MLA 512), ML 1673 Name of Authorisation / Authorisation holder(s) Glendell Tenements Pty Limited Mining Authorisations (Lease/Licence No.) ML1410, ML1476, CL 358, MPL343 Name of Mine Operator (if different) Mt Owen Pty Limited / Thiess Pty Ltd Name and Contact Details of the Mine Manager (or equivalent) Ashley McLeod Name and Contact Details of Environmental Representative Glenn Cook Name of Representative(s) of the Authorisation Holder(s) Shane Holmes Title of Representative(s) of the Authorisation Holder(s) Technical Services Manager Signature of Representative(s) of the Authorisation Holder(s) Date 7 March 2017 Version Revised Submission Mount Owen Complex Mining Operations Plan January 2017 - December 2021 Report Number March 2017 Revised Submission Page iii Table of Contents SLR Consulting Australia Pty Ltd 1 INTRODUCTION.

3 1 Brief History of Mining Operations at the MOC .. 2 History of Ravensworth East Mine .. 2 History of Glendell Mine .. 2 History of Mount Owen Mine .. 2 Mount Owen Complex .. 3 Proposed activities within the MOC during the MOP term includes: .. 4 Current Consents, Authorisations and Licences .. 5 Development Consents .. 5 Mining Titles .. 5 Ancillary Licences and Approvals .. 6 Land Ownership and Land Use .. 9 Stakeholder Consultation .. 9 Community Consultation .. 9 Statutory Authorities ..10 Other Stakeholders ..10 MOP Consultation ..11 Revision of the MOP Following Government Consultation ..11 2 PROPOSED MINING ACTIVITIES ..12 Project Description ..12 Post Mining Land use - Asset Register ..12 Rehabilitation Cost Estimate.

4 14 Activities over the MOP Term ..14 Exploration ..14 Construction ..15 Mining Operations ..16 Land Preparation ..16 Soil Stripping and Stockpiling ..17 Waste Rock Removal and Emplacement ..18 Coal Stockpiling and Processing ..18 Coal Transport ..19 Coarse Rejects and Tailings Disposal ..19 Decommissioning and Demolition Activities ..20 Progressive Rehabilitation and Completion ..20 Material Production Schedule ..21 3 ENVIRONMENTAL MANAGEMENT ..22 Environmental Risk Assessment ..22 Environmental Risk Management ..26 Flora and Fauna ..26 Final Landform Design ..27 Mount Owen Complex Mining Operations Plan January 2017 - December 2021 Report Number March 2017 Revised Submission Page iv Table of Contents SLR Consulting Australia Pty Ltd Heritage (Aboriginal and European).

5 28 Erosion and Sediment Control ..29 Air Quality ..29 Visual and Lighting ..30 Blasting ..30 Noise ..30 Bushfire ..31 Hazardous Materials and Dangerous Goods ..31 Water Management ..31 Waste Management ..32 Weeds and Pests ..33 Operational Issues Which Affect Rehabilitation ..34 Mine Subsidence ..34 Settlement of Tailings ..34 Soils and Capping Materials ..34 Contaminated Land ..35 Spontaneous Combustion ..35 Geochemical Constraints ..36 Final Landuse Integration with Adjacent Operations ..37 4 POST MINING LAND USE ..38 Regulatory Requirements ..38 Post Mining Land Use Goal ..47 Open Woodland ..47 Open Forest ..47 Open Grassland ..47 Water Management Structures ..48 Final Rehabilitation Objectives ..48 5 REHABILITATION PLANNING AND MANAGEMENT.

6 49 Domain Selection ..49 Domain Rehabilitation Objectives ..50 Rehabilitation Phases ..53 6 PERFORMANCE INDICATORS, AND COMPLETION / RELINQUISHMENT CRITERIA ..55 7 REHABILITATION Status at MOP Commencement ..77 Proposed Rehabilitation Activities during the MOP Term ..78 Rehabilitation Methodologies for Activities in the MOP Term ..79 Decommissioning Phase ..79 Landform Establishment Phase ..79 Growth Medium Development Phase ..81 Mount Owen Complex Mining Operations Plan January 2017 - December 2021 Report Number March 2017 Revised Submission Page v Table of Contents SLR Consulting Australia Pty Ltd Ecosystem and Landuse Establishment ..82 Ecosystem and Landuse Sustainability Phase ..86 Summary of Rehabilitation Areas during the MOP Term.

7 86 Relinquishment Phase Achieved during the MOP Term ..94 8 REHABILITATION MONITORING AND RESEARCH ..95 Rehabilitation Monitoring Monitoring Pasture Rehabilitation ..95 Monitoring of Native Vegetation ..96 Active Mining Records ..96 Rehabilitation Methodology Records ..96 Rehabilitation Inspections ..97 Rehabilitation Monitoring ..97 Research and Rehabilitation Trials ..98 Research and Trials Pre MOP ..98 Research and Trials This MOP period ..99 9 INTERVENTION AND ADAPTIVE MANAGEMENT ..100 Threats to Rehabilitation ..100 Trigger Action Response Plan (TARP) ..101 10 REPORTING ..108 Annual Review ..108 Incident Reporting ..108 11 REVIEW AND IMPLEMENTATION OF THE MOP ..109 MOP Review Protocol ..109 12 REFERENCES ..111 TABLES Table 1 History of Mining Operations Plans for the MOC.

8 3 Table 2 MOC 5 Table 3 MOC Mining Tenements .. 5 Table 4 Environment Protection Licences Relevant to the MOC .. 6 Table 5 Groundwater Licences .. 6 Table 6 Surface Water Licences .. 7 Table 7 Creek Diversion Licences .. 8 Table 8 Miscellaneous Emplacement Licences .. 8 Table 9 High Risk Activity Notifications .. 8 Table 10 Asset Register .. 12 Table 11 Typical Mining and Key Ancillary Equipment .. 16 Table 12 Status of Tailings Emplacements in the MOP Term .. 20 Mount Owen Complex Mining Operations Plan January 2017 - December 2021 Report Number March 2017 Revised Submission Page vi Table of Contents SLR Consulting Australia Pty Ltd Table 13 Mount Owen Material Production Schedule .. 21 Table 14 Ravensworth East Material Production Schedule .. 21 Table 15 Glendell Material Production Schedule.

9 21 Table 16 Summary of Risks to Rehabilitation MOP Risk Assessment (medium or higher ranking only) 23 Table 17 Indicative Soil Balance at Commencement of MOP .. 34 Table 18 Regulatory Requirements Relating to Post Mining Land Use and Rehabilitation .. 38 Table 19 Primary and Secondary Domains .. 49 Table 20 Domain Rehabilitation Objectives .. 50 Table 21 Summary of Rehabilitation Phases Proposed for Completion at end of the MOP Term .. 54 Table 22 Decommissioning Phase .. 56 Table 23 Landform Establishment Phase .. 62 Table 24 Growth Medium Development Phase .. 67 Table 25 Ecosystem and Land Use Establishment Phase .. 69 Table 26 Ecosystem and Landuse Sustainability Phase .. 72 Table 27 Status of Primary and Secondary Domains at MOP Commencement .. 77 Table 28 Proposed Rehabilitation Activities During the MOP Term.

10 78 Table 29 Typical Pasture Species for Open Grassland .. 83 Table 30 The MOC Open Woodland Species and Seeding rates .. 83 Table 31 Typical Native Revegetation Species Mix for Central Hunter Ironbark Spotted Gum Grey Box Forest .. 85 Table 32 Summary of Disturbance and Rehabilitation Proposed during the MOP Term .. 87 Table 33 Data Summary of Rehabilitation Proposed during the MOP Term .. 87 Table 34 Key Threats to Rehabilitation Updated According to MOP Risk Assessment .. 100 Table 35 Trigger Action Response Plan .. 102 Table 36 Responsibilities for Implementation of this MOP .. 110 APPENDICES Appendix A MOP Plans Appendix B Land Ownership Register Appendix C MOP Rehabilation Risk Assessment Appendix D Tailings Management Plan Appendix E Government Consultation (DO NOT DELETE SECTION BREAK) Mount Owen Complex Mining Operations Plan January 2017 - December 2021 Report Number March 2017 Revised Submission Page 1 SLR Consulting Australia Pty Ltd 1 INTRODUCTION This Mining Operations Plan (MOP) describes the proposed mining operations and rehabilitation at the Mount Owen Complex (MOC) for the term (1 January 2017 31 December 2021).