Appendix F Biodiversity Assessment
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Appendix F Biodiversity assessment Roads and Maritime Services Showground Road Upgrade between Carrington Road and Old Northern Road, Castle Hill Biodiversity Assessment March 2014 This Biodiversity Assessment Report (“report”): has been prepared by GHD for Roads and Maritime Services and may only be used and relied on by Roads and Maritime Services for the purpose agreed between GHD and the Roads and Maritime Services as set out in section 1.1 of this report. GHD otherwise disclaims responsibility to any person other than Roads and Maritime Services arising in connection with this report. GHD also excludes implied warranties and conditions, to the extent legally permissible. The services undertaken by GHD in connection with preparing this report were limited to those specifically detailed in the report and are subject to the survey limitations set out in the report. The opinions, conclusions and any recommendations in this report are based on conditions encountered and information reviewed at the date of preparation of the report. GHD has no responsibility or obligation to update this report to account for events or changes occurring subsequent to the date that the report was prepared. The opinions, conclusions and any recommendations in this report are based on assumptions made by GHD described in this report (refer section 1 of this report). GHD disclaims liability arising from any of the assumptions being incorrect. GHD has prepared this report on the basis of information provided by Roads and Maritime Services and others who provided information to GHD (including Government authorities), which GHD has not independently verified or checked beyond the agreed scope of work. GHD does not accept liability in connection with such unverified information, including errors and omissions in the report which were caused by errors or omissions in that information. The opinions, conclusions and any recommendations in this report are based on information obtained from specific sample points. Site conditions at other parts of the site may be different from the site conditions found at the specific sample points. Investigations undertaken in respect of this report are constrained by the particular site conditions, such as the location of buildings, services and vegetation. As a result, not all relevant site features and conditions may have been identified in this report. Site conditions may change after the date of this Report. GHD does not accept responsibility arising from, or in connection with, any change to the site conditions. GHD is also not responsible for updating this report if the site conditions change. GHD | Report for Roads and Maritime Services - Showground Road Upgrade between Carrington Road and Old Northern Road, Castle Hill, 21/22830 | i Table of contents 1. Introduction .................................................................................................................................... 1 1.1 Overview .............................................................................................................................. 1 1.2 Description of the proposal .................................................................................................. 1 1.3 Background to the proposal ................................................................................................. 2 1.4 Definitions ............................................................................................................................ 2 2. Legislative context .......................................................................................................................... 1 3. Methods.......................................................................................................................................... 2 3.1 Database searches .............................................................................................................. 2 3.2 Field surveys ........................................................................................................................ 2 3.3 Survey limitations ................................................................................................................. 3 4. Existing environment ...................................................................................................................... 4 4.1 Landscape context ............................................................................................................... 4 4.2 Database search results and conservation significance ...................................................... 5 4.3 Existing flora ........................................................................................................................ 5 4.4 Existing fauna .................................................................................................................... 10 4.5 Habitat connectivity ............................................................................................................ 11 5. Potential Impacts .......................................................................................................................... 13 5.1 Summary of potential impacts ........................................................................................... 13 5.2 Direct impacts .................................................................................................................... 14 5.3 Indirect impacts .................................................................................................................. 17 5.4 Operational impacts ........................................................................................................... 17 5.5 Cumulative impacts ............................................................................................................ 18 5.6 Key threatening processes ................................................................................................ 18 5.7 Impacts on threatened biota .............................................................................................. 19 6. Mitigation measures ..................................................................................................................... 21 7. Conclusion ................................................................................................................................... 24 8. References ................................................................................................................................... 25 Table index Table 1 Noxious weeds within the study area .................................................................................. 8 Table 2 Summary of potential impacts from construction works .................................................... 13 Table 3 Key threatening processes ................................................................................................ 18 Table 4 Safeguards and management measures .......................................................................... 22 ii | GHD | Report for Roads and Maritime Services - Showground Road Upgrade between Carrington Road and Old Northern Road, Castle Hill, 21/22830 Figure index Figure 1 Vegetation, habitat features and noxious weeds ................................................................. 9 Appendices Appendix A – Threatened biota and MNES likely to occur in the study area Appendix B – Species lists Appendix C – Comparison of site vegetation against final determinations for threatened ecological communities Appendix D – Assessments of significance for State listed threatened biota Appendix E – Assessments of significance for Commonwealth-listed threatened biota GHD | Report for Roads and Maritime Services - Showground Road Upgrade between Carrington Road and Old Northern Road, Castle Hill, 21/22830 | iii 1. Introduction 1.1 Overview Roads and Maritime Services (Roads and Maritime) proposes to upgrade and widen about 1.5 kilometres of Showground Road, between east of Carrington Road and Old Northern Road (referred to as ‘the proposal’ for the purposes of this report). The proposal is located in the suburb of Castle Hill, which is located about 24 kilometres north-west of the Sydney central business district. Showground Road runs between Old Northern Road and Windsor Road, at Castle Hill. It is generally a four-lane road between Old Northern Road and Pennant Street, and between Carrington Road and Windsor Road. The section between Pennant Street and Carrington Road is generally only one lane in each direction and is congested in peak periods. The proposal is needed to address current congestion issues on Showground Road and predicted traffic growth as a result of development in the Castle Hill centre, as well as associated general growth in local and regional traffic. This report has been prepared by GHD as part of the environmental assessment of the project. Roads and Maritime is the proponent of the proposal and an environmental assessment in the form of a review of environmental factors is being prepared by GHD in accordance with the requirements of Part 5 of the Environmental Planning and Assessment Act 1979 (EP&A Act). The description of the proposal and associated environmental impacts have been undertaken in context of clause 228 of the Environmental Planning and Assessment Regulation 2000 (the Regulation), the Threatened Species Conservation Act 1995 (TSC Act), the Fisheries Management Act 1994 (FM Act), and the Australian Government’s Environment Protection and Biodiversity Conservation