Conservation Significant Flora Survey and Impact Assessment of the Cooljarloo West Project

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Conservation Significant Flora Survey and Impact Assessment of the Cooljarloo West Project CONSERVATION SIGNIFICANT FLORA SURVEY AND IMPACT ASSESSMENT, TRONOX COOLJARLOO WEST PROJECT Prepared For TRONOX MANAGEMENT PTY LTD March 2017 TJV1601/023/16 Prepared By DISCLAIMER AND LIMITATIONS This report has been prepared on behalf of and for the exclusive use of Tronox Management Pty Ltd, and is subject to and issued in accordance with the agreement between Tronox Management Pty Ltd and Mattiske Consulting Pty Ltd. Mattiske Consulting Pty Ltd accepts no liability or responsibility whatsoever for it with respect to any use of, or reliance upon, this report by any third party. This report is based on the scope of services defined by Tronox Management Pty Ltd, budgetary and time constraints imposed by Tronox Management Pty Ltd, the information supplied by Tronox Management 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 Tronox Management Pty Ltd or Mattiske Consulting Pty Ltd. DOCUMENT HISTORY PREPARED REVIEWED SUBMITTED REPORT VERSION BY BY DATE COPIES Internal review V1 NM SBR 07/02/2017 - Electronic Draft report for client review V2 NM EMM 13/02/2017 DRAFT Second draft following client review V3 NM/CBL/SBR EMM 17/03/2017 Electronic Electronic & Final report V4 hard copies Mattiske Consulting Pty Ltd TABLE OF CONTENTS 1. SUMMARY ..................................................................................................................................... 1 2. INTRODUCTION ............................................................................................................................ 3 2.1. Location and Scope of Proposal .............................................................................................. 3 2.2. Objectives ............................................................................................................................ 6 2.3. Western Australia’s Flora – A Legislative Perspective ................................................................ 6 3. METHODS ...................................................................................................................................... 7 3.1. Resolution of Taxa ................................................................................................................ 7 3.2. Field Survey ......................................................................................................................... 8 3.2.1. Orchid Habitat Determination ................................................................................................. 8 3.2.2. Phase 1 ................................................................................................................................ 8 3.2.3. Phase 2 ................................................................................................................................ 9 3.3. Survey Timing ...................................................................................................................... 9 3.4. Impact Assessment ............................................................................................................. 12 3.5. Vegetation Types and Habitat Associations ............................................................................ 13 3.6. Survey Limitations ............................................................................................................... 14 4. RESULTS ...................................................................................................................................... 15 4.1. Resolution of Taxa .............................................................................................................. 15 4.2. Targeted Conservation Significant Taxa ................................................................................. 15 4.2.1. Andersonia gracilis (T/EN) ................................................................................................... 25 4.2.2. Anigozanthos viridis subsp. terraspectans (T/VU) ................................................................... 25 4.2.3. Macarthuria keigheryi (T/EN) ............................................................................................... 25 4.2.4. Paracaleana dixonii (T/EN) ................................................................................................... 26 4.2.5. Babingtonia delicata (P1) ..................................................................................................... 26 4.2.6. Calectasia palustris (P1)....................................................................................................... 27 4.2.7. Chordifex reseminans (P2) ................................................................................................... 27 4.2.8. Grevillea thelemanniana subsp. Cooljarloo (B.J. Keighery 28 B) (P1) ........................................ 27 4.2.9. Hypocalymma sp. Cataby (G.J. Keighery 5151) (P2) ............................................................... 27 4.2.10. Thelymitra aff. pulcherrima (P2) ........................................................................................ 27 4.3. Other Conservation Significant Taxa ..................................................................................... 30 4.4. Revised Impact Assessment ................................................................................................. 31 4.5. Vegetation Types and Habitat Associations ............................................................................ 36 5. DISCUSSION ............................................................................................................................... 40 5.1. Andersonia gracilis (T/EN) ................................................................................................... 40 5.2. Anigozanthos viridis subsp. terraspectans (T/VU) ................................................................... 41 5.3. Macarthuria keigheryi (T/EN) ............................................................................................... 41 5.4. Paracaleana dixonii (T/EN) ................................................................................................... 41 5.5. Chordifex reseminans (P2) ................................................................................................... 42 5.6. Thelymitra pulcherrima (P2) ................................................................................................. 42 5.7. Other Conservation Significant Taxa ..................................................................................... 42 6. CONCLUSION .............................................................................................................................. 43 7. ACKNOWLEDGEMENTS ............................................................................................................... 43 8. PERSONNEL ................................................................................................................................ 44 9. REFERENCES ............................................................................................................................... 45 Mattiske Consulting Pty Ltd TABLES i: Summary of revised impact, risk rankings and taxonomic outcomes from the 2016 survey of target taxa 1: Survey timing 2: Monthly comparison of target species’ flowering periods, rainfall and Mattiske survey intensity 3: Significance ranking of local populations of conservation significant flora to the regional conservation of each taxon 4: Impact ranking on the numbers of plants in the Assessment Area 5: Impact ranking on the preferred habitat of conservation significant species in the Assessment Area 6: Risk of significance ranking of impact on regional conservation status of conservation significant species 7a: Number of plants (and locations) of conservation significant flora taxa recorded within the Assessment Area, deemed to be impacted 7b: Number of plants (and locations) of conservation significant flora taxa recorded within the Assessment Area, deemed not to be impacted 8: Historic and current numbers of Macarthuria keigheryi (T/EN) plants known from the Assessment Area 9: Revised impact ranking on numbers of plants of conservation significant flora recorded within the Assessment Area 10: Habitat associations with conservation significant species and consequent impact rankings FIGURES 1: Location 2: 2016 survey effort 3.1: Threatened flora in the Assessment Area 3.2: Priority 1 flora in the Assessment Area 3.3: Priority 2 flora in the Assessment Area 3.4: Priority 3 flora in the Assessment Area 3.5: Priority 4 flora in the Assessment Area PLATES 1: Target taxa inflorescences 2: Other conservation significant taxa inflorescences APPENDICES A1: State definition of threatened and priority flora species A2: Federal definition of threatened flora species A3: Clearing of native vegetation A4: Local and regional significance A5: State definition of priority ecological communities B: Changes and additions to the Tronox-Iluka Conservation Significant Flora Database based on Mattiske 2016 surveys C: Geographic co-ordinates of all conservation significant taxa recorded within the Assessment Area D: Summary of changes to the area of historic vegetation types within the Study Area Mattiske Consulting Pty Ltd ABBREVIATIONS AA: Assessment Area BOM: Bureau of Meteorology CC: Conservation Code (either federal or state listings) DE: Development Envelope DF: Development Footprint DotEE: Department of the Environment
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