Flora and Vegetation Values of the Private Properties Located Within the Proposed Expansion Areas That Had Not Been Previously Surveyed (Infill Areas)
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ASSESSMENT OF FLORA AND VEGETATION ON WORSLEY MINE EXPANSION AREAS Prepared for South32 Worsley Alumina Pty Ltd Prepared by Mattiske Consulting Pty Ltd May 2019 WOR1802/65/18 ____________________________________________________________________________________________ Disclaimer and Limitation This report has been prepared on behalf of and for the exclusive use of South32 Worsley Alumina Pty Ltd, and is subject to and issued in accordance with the agreement between South32 Worsley Alumina Pty Ltd and Mattiske Consulting Pty Ltd. Mattiske Consulting Pty Ltd accepts no liability or responsibility whatsoever for it in respect of any use of or reliance upon this report by any third party. This report is based on the scope of services defined by South32 Worsley Alumina Pty Ltd, budgetary and time constraints imposed by South32 Worsley Alumina Pty Ltd, the information supplied by South32 Worsley Alumina Pty Ltd (and its agents), and the method consistent with the preceding. Copying of this report or parts of this report is not permitted without the authorisation of South32 Worsley Alumina Pty Ltd or Mattiske Consulting Pty Ltd. DOCUMENT HISTORY Prepared Reviewed Submitted to Client Report Version By By Date Copies Internal Review V1 EMM/JR/RD EMM - - Draft Report V2 EMM/JR/RD EMM 20/12/2018 Email Draft Report V3 EMM EMM 7/02/2019 Email Draft Report V4 EMM EMM 12/02/2019 Email Final Report V5 EMM EMM 7/05/2019 Email Mattiske Consulting Pty Ltd ____________________________________________________________________________________________ TABLE OF CONTENTS Page 1. SUMMARY ........................................................................................................................................ 1 2. BACKGROUND .................................................................................................................................. 6 2.1 Location and Scope of Proposal ................................................................................................... 6 2.2 Climate ..................................................................................................................................... 6 2.3 Soils and Topography ................................................................................................................. 7 2.4 Regional Vegetation ................................................................................................................... 7 2.5 Western Australia’s Flora – A Legislative Perspective ..................................................................... 8 2.6 Threatened and Priority Flora ...................................................................................................... 9 2.7 Threatened and Priority Ecological Communities ........................................................................... 9 2.8 Clearing of Native Vegetation .................................................................................................... 10 2.9 Declared (Plant) Pest Organisms ............................................................................................... 11 2.10 Local and Regional Significance ................................................................................................. 11 3. OBJECTIVES ................................................................................................................................... 12 4. METHODS ...................................................................................................................................... 13 4.1 Desktop Survey ....................................................................................................................... 13 4.2 Field Survey ............................................................................................................................ 13 4.3 Vegetation Mapping ................................................................................................................. 15 4.4 Survey Limitations and Constraints ............................................................................................ 15 5. RESULTS ........................................................................................................................................ 17 5.1 Flora ....................................................................................................................................... 17 5.2 Threatened and Priority Flora .................................................................................................... 17 5.3 Introduced Plant Species .......................................................................................................... 21 5.4 Vegetation Complexes .............................................................................................................. 21 5.5 Site-Vegetation Types .............................................................................................................. 28 5.6 Condition of the Vegetation ...................................................................................................... 49 5.7 Threatened and Priority Ecological Communities ......................................................................... 63 5.8 Significant Vegetation Communities ........................................................................................... 64 6. DISCUSSION .................................................................................................................................. 65 6.1 Flora ....................................................................................................................................... 65 6.2 Vegetation .............................................................................................................................. 66 6.3 Site-Vegetation Types .............................................................................................................. 66 7. CONCLUSIONS AND RECOMMENDATIONS ......................................................................................... 69 8. ACKNOWLEDGEMENTS .................................................................................................................... 71 9. PERSONNEL ................................................................................................................................... 71 10. REFERENCES .................................................................................................................................. 71 Mattiske Consulting Pty Ltd ____________________________________________________________________________________________ TABLES 1: Potential Flora and Vegetation Survey Limitations for the Bauxite Mine Expansion Areas 2: Conservation Significant Flora located within the WMDE and Bauxite Transport Corridor 3: Conservation Significant Flora located within the CBME 4: Extent of Vegetation Complexes Infill Areas 5: Extent of Vegetation Complexes WMDE 6: Extent of Vegetation Complexes Bauxite Transport Corridor 7: Extent of Vegetation Complexes CBME 8: Extent of the Site-Vegetation Types Infill Areas, WMDE and Bauxite Transport Corridor 9: Extent of the Site-Vegetation Types CBME 10: Vegetation Condition Infill Areas, WMDE, Bauxite Transport Corridor and CBME 11: Assessment of proposal against Clearing Principles FIGURES 1: Locality Map 2: Rainfall (Collie and Marradong) and temperature (Wokalup and Wandering) data for the respective Boddington and Collie areas (Bureau of Meteorology 2018) 3:1 DBCA Threatened Flora and PEC – Boddington - Worsley Mine Expansion 3:2 DBCA Threatened Flora – Collie - Worsley Mine Expansion 4.1: Vegetation Complexes – Boddington - Worsley Mine Expansion 4.2: Vegetation Complexes – Collie - Worsley Mine Expansion 5.0: Vegetation Legend 5.1 – 5.13 Site-vegetation Type Maps – Boddington - Worsley Mine Expansion 5.14: Site-vegetation Types – Collie - Worsley Mine Expansion 6.1 – 6.13: Vegetation Condition Maps – Boddington - Worsley Mine Expansion APPENDICES A: Summary of Key Baseline Assessments of the South32 Lease Areas, 1980 to 2018 B1: Threatened and Priority Flora Definitions B1.1: Federal definition of Threatened Flora Species (Commonwealth Environment Protection and Biodiversity Conservation Act 1999) B1.2: State definition of Threatened Flora Species (Department of Biodiversity, Conservation and Attractions 2019b) B1.3: State definition of Priority Flora Species (Department of Biodiversity, Conservation and Attractions 2019b) B2: Threatened and Priority Ecological Community Definitions B2.1: Federal definition of Threatened Ecological Communities (Commonwealth Environment Protection and Biodiversity Conservation Act 1999) B2.2 State definition of Threatened Ecological Communities (Department of Biodiversity, Conservation and Attractions 2019c) B2.3: State definition of Priority Ecological Communities (Department of Biodiversity, Conservation and Attractions 2019d) B3: Categories and Control Measures of Declared Pest (Plant) Organisms in Western Australia B4: Other Definitions Mattiske Consulting Pty Ltd ____________________________________________________________________________________________ APPENDICES C: Summary of Vascular Plant Species with the Potential to occur on WMDE and Bauxite Transport Corridor areas near Boddington D: Likelihood of Vascular Plant Species with the Potential to occur on WMDE and Bauxite Transport Corridor areas E: Summary of Vascular Plant Species with the Potential to occur at Collie Refinery F: Likelihood of Vascular Plant Species with the Potential to occur at Collie Refinery