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Tonganah Sand Extractive Pit – Tonganah Environment Effects Report

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Tonganah Sand Extractive Pit – Tonganah Environment Effects Report Tonganah Sand Extractive Pit – Tonganah Environment Effects Report Prepared by: Barry Williams Date: 9 March 2020 Issue Date Recipient Organisation Revision 0 13 January 2020 Mr Vance Donald Boral Construction Materials Ltd Revision 1 23 January 2020 Mr Vance Donald Boral Construction Materials Ltd Revision 1 24 January 2020 Environment Protection Authority Revision 2 9 March 2020 Environment Protection Authority Tonganah sand extractive pit– EER Revision 2 This Report is based entirely on information available to ILMP at the time of its creation. ILMP accepts no liability for any loss or damage, whether direct or indirect, in the event that not all relevant information that the Principal knows or should have known is provided to ILMP prior to the implementation of this Report. TABLE OF CONTENTS Table of Contents .................................................................................................................................... 2 Tables ...................................................................................................................................................... 3 Figures ..................................................................................................................................................... 3 Part A - Proponent information .............................................................................................................. 4 Part B – Proposal description .................................................................................................................. 5 1 Overview of activity and site ........................................................................................................... 5 2 Site layout and development ........................................................................................................ 12 2.1 Arrangement of infrastructure ............................................................................................. 12 Part C – Potential environmental impacts ............................................................................................ 14 1 Air quality ...................................................................................................................................... 14 1.1 Dust sources .......................................................................................................................... 14 1.1.1 Stripping and screening ................................................................................................ 14 1.1.2 Stockpiles and transport ............................................................................................... 14 1.2 Dust mitigation measures ..................................................................................................... 14 2 Water quality ................................................................................................................................ 15 2.1 Hydrological setting .............................................................................................................. 15 2.2 run-off control infrastructure ............................................................................................... 15 2.2.1 Size of sediment traps ................................................................................................... 16 2.3 Potential impact and mitigation ........................................................................................... 17 3 Noise emissions ............................................................................................................................. 17 3.1 Mitigating factors .................................................................................................................. 18 4 Waste ............................................................................................................................................ 18 5 Environmentally hazardous substances ........................................................................................ 18 6 Natural values ............................................................................................................................... 18 6.1 Threatened flora ................................................................................................................... 19 6.2 Threatened fauna .................................................................................................................. 19 6.3 Vegetation types ................................................................................................................... 19 7 Weeds, pests and diseases ........................................................................................................... 20 7.1 Weeds ................................................................................................................................... 20 7.2 Plant disease ......................................................................................................................... 20 7.3 Animal disease ...................................................................................................................... 20 Integrated Land Management and Planning | Table of Contents 2 Tonganah sand extractive pit– EER Revision 2 7.4 Recommendations ................................................................................................................ 20 8 Environmental Impact of Traffic ................................................................................................... 21 9 Monitoring .................................................................................................................................... 21 9.1 Air emissions ......................................................................................................................... 21 9.2 Sediment traps and settling ponds ....................................................................................... 21 10 Decommissioning and Rehabilitation ....................................................................................... 21 10.1 Objective ............................................................................................................................... 21 10.2 Progressive rehabilitation ..................................................................................................... 21 10.3.1 Planting ......................................................................................................................... 22 10.4 Planting schedule .................................................................................................................. 23 Part D – Summary of proposed management measures ...................................................................... 24 Part E – Public and stakeholder consultation ....................................................................................... 24 11 References ................................................................................................................................ 25 12 Appendices ................................................................................................................................ 25 12.1 Appendix 1 – Ecological Assessment of Kamona Sand Extraction Site (mining lease 3M/2019) Goanna Road, Kamona, Tasmania Environmental Consulting Options (ECOtas). ........... 25 TABLES Table 1: Proponent details ...................................................................................................................... 4 Table 2: Consultant details...................................................................................................................... 4 Table 3: Operation details ....................................................................................................................... 4 Table 4: Time of concentration ............................................................................................................. 15 Table 5: Flow rate ................................................................................................................................. 16 Table 6: Capture efficiency ................................................................................................................... 16 Table 7: Sediment trap surface area ..................................................................................................... 16 Table 8: Clean out frequency ................................................................................................................ 16 Table 9: Mechanical equipment ........................................................................................................... 17 Table 10: Weeds recorded within 500 metres...................................................................................... 20 Table 11: Weeds recorded within 5 kilometres .................................................................................... 20 Table 12: planting shedule .................................................................................................................... 23 FIGURES Figure 1: Tonganah Sand- uses within 500 metres ................................................................................. 7 Figure 2: Mining plan - general arrangment diagram ........................................................................... 13 Figure 3: Tonganah Sand Extractive Pit – Locality Plan (Land Tasmania, 2019) ................................... 14 Integrated Land Management and Planning | Tables 3 Tonganah
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