New M5 EIS Vol 2H App S Biodiversity Assessment
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New M5 Environmental Impact Statement Biodiversity Assessment Report Appendix S November 2015 WestConnex The New M5: Biodiversity Assessment Report DOCUMENT TRACKING Item Detail Project Name The New M5 Environmental Impact Assessment Project Number 14SYD_349 Meredith Henderson Project Manager 02 8536 8650 299 Sussex Street Sydney, NSW 2000 Prepared by Matthew Dowle, Meredith Henderson, Danielle Adams-Bennett Reviewed by Ryan Smithers Approved by Mark Adams Status FINAL Version Number 8 Last saved on 19 November 2015 This report should be cited as ‘Eco Logical Australia 2015. The New M5 - Biodiversity Assessment Report. Prepared for Roads and Maritime Services of NSW.’ ACKNOWLEDGEMENTS This document has been prepared by Eco Logical Australia Pty Ltd with support from Roads and Maritime Services of NSW and AECOM. Disclaimer This document may only be used for the purpose for which it was commissioned and in accordance with the contract between Eco Logical Australia Pty Ltd and Roads and Maritime Services of NSW. The scope of services was defined in consultation with Roads and Maritime Services of NSW, by time and budgetary constraints imposed by the client, and the availability of reports and other data on the subject area. Changes to available information, legislation and schedules are made on an ongoing basis and readers should obtain up to date information. Eco Logical Australia Pty Ltd accepts no liability or responsibility whatsoever for or in respect of any use of or reliance upon this report and its supporting material by any third party. Information provided is not intended to be a substitute for site specific assessment or legal advice in relation to any matter. Unauthorised use of this report in any form is prohibited. Template 08/05/2014 © ECO LOGICAL AUSTRALIA PTY LTD iii WestConnex The New M5: Biodiversity Assessment Report (blank page) © ECO LOGICAL AUSTRALIA PTY LTD iv WestConnex The New M5: Biodiversity Assessment Report Contents Executive summary ......................................................................................................................... xv 1 Introduction ........................................................................................................................... 1 1.1 Project background .................................................................................................................. 1 1.2 Overview of WestConnex ........................................................................................................ 3 1.3 Overview of the project ............................................................................................................ 4 1.4 Study area ............................................................................................................................... 5 1.4.1 Construction footprint............................................................................................................... 6 1.4.2 Operational footprint ................................................................................................................ 6 1.5 Context of Biodiversity Assessment Report .............................................................................. 6 1.5.1 Assessment guidelines ............................................................................................................ 7 1.6 Report structure ....................................................................................................................... 7 2 Methodology ........................................................................................................................ 13 2.1 Background information ......................................................................................................... 13 2.1.1 Database searches ................................................................................................................ 13 2.1.2 Previous reports .................................................................................................................... 13 2.1.3 Previous studies .................................................................................................................... 16 2.2 Assessment methodology ...................................................................................................... 16 2.2.1 Field surveys and database searches .................................................................................... 16 2.2.2 Survey effort .......................................................................................................................... 18 2.2.3 Survey conditions .................................................................................................................. 19 2.2.4 Project personnel................................................................................................................... 20 2.2.5 Limitations ............................................................................................................................. 20 3 Landscape features ............................................................................................................. 21 3.1 IBRA bioregions and subregions ............................................................................................ 21 3.2 Mitchell Landscapes .............................................................................................................. 21 3.3 Rivers, stream and estuaries ................................................................................................. 21 3.4 Wetlands ............................................................................................................................... 21 3.5 Groundwater dependent ecosystems ..................................................................................... 25 3.6 Landscape value score .......................................................................................................... 26 3.6.1 Current and future native vegetation cover score ................................................................... 26 3.6.2 Connectivity value score ........................................................................................................ 27 3.6.3 Patch size.............................................................................................................................. 27 3.6.4 Change in area to perimeter ratio........................................................................................... 28 © ECO LOGICAL AUSTRALIA PTY LTD v WestConnex The New M5: Biodiversity Assessment Report 4 Native vegetation ................................................................................................................. 31 4.1 Stratification of native vegetation into Plant Community Types (PCTs) and ecological communities .......................................................................................................................... 31 4.1.1 Broad-leaved Ironbark Melaleuca decora shrubby open forest on the clay soils of the Cumberland Plain, Sydney Basin Bioregion (PCT 725 or ME002) .......................................... 31 4.1.2 Paperbark swamp forest of the coastal lowlands of the NSW North Coast Bioregion and Sydney Basin Bioregion (PCT 1064 or ME050) ...................................................................... 32 4.1.3 Turpentine Grey Ironbark open forest on shale in the Sydney Basin (PCT 1281 or ME041) .... 32 4.1.4 Smooth-barked Apple - Red Bloodwood - Sydney Peppermint heathy open forest in sandstone gullies of western Sydney, Sydney Basin (PCT 1181 or ME029) ............................................ 33 4.2 Other vegetation .................................................................................................................... 34 4.2.1 Urban native and exotic ......................................................................................................... 34 4.3 Vegetation zones ................................................................................................................... 36 5 Threatened species ............................................................................................................. 47 5.1 Ecosystem credit species ...................................................................................................... 47 5.2 Species credit species ........................................................................................................... 48 5.2.1 Green and Golden Bell Frog .................................................................................................. 55 5.3 Aquatic biodiversity ................................................................................................................ 57 6 Avoidance, mitigation and impacts .................................................................................... 59 6.1 Avoidance and minimisation of impacts.................................................................................. 59 6.1.1 Alternate locations ................................................................................................................. 60 6.1.2 Route alignment .................................................................................................................... 60 6.2 Assessment of impacts .......................................................................................................... 61 6.3 Direct impacts.......................................................................................................................