Gosford South Substation and Wyoming Sectioning Hut Review of Environmental Factors
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Power Supply Upgrade Gosford South Substation and Wyoming Sectioning Hut Review of Environmental Factors May 2015 This report has been prepared by GHD for Transport for New South Wales and may only be used and relied on by Transport for New South Wales for the purpose agreed between GHD and the Transport for New South Wales as set out in section 1.5 of this report. GHD otherwise disclaims responsibility to any person other than Transport for New South Wales 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 scope 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 1.5 of this report). GHD disclaims liability arising from any of the assumptions being incorrect. Artist impression images are for indicative illustration purposes only. GHD | Report for Transport for New South Wales - Gosford South Substation and Wyoming Sectioning Hut REF, 21/24199 Table of contents 1. Introduction .................................................................................................................................... 1 1.1 Overview .............................................................................................................................. 1 1.2 The power supply upgrade program .................................................................................... 1 1.3 The proposal ........................................................................................................................ 1 1.4 Structure of the REF ............................................................................................................ 3 1.5 Scope and methodology ...................................................................................................... 3 2. Location and setting ....................................................................................................................... 5 2.1 Site location and description ................................................................................................ 5 2.2 The study area and site context ......................................................................................... 11 3. Statutory Framework .................................................................................................................... 14 3.1 Environmental Planning and Assessment Act 1979 .......................................................... 14 3.2 Environmental planning instruments .................................................................................. 14 3.3 Other legislative considerations ......................................................................................... 17 3.4 Summary of approval requirements ................................................................................... 20 4. Strategic context, need and options considered .......................................................................... 21 4.1 Strategic context and need for the proposal ...................................................................... 21 4.2 Proposal development process ......................................................................................... 21 4.3 Objectives of the proposal ................................................................................................. 22 4.4 Options considered ............................................................................................................ 22 5. Description of the proposal .......................................................................................................... 24 5.1 Overview ............................................................................................................................ 24 5.2 Gosford South substation .................................................................................................. 24 5.3 Wyoming sectioning hut ..................................................................................................... 26 5.4 Connections to existing overhead wiring system ............................................................... 27 5.5 Decommissioning and demolition of the existing Gosford substation ............................... 28 5.6 Construction information .................................................................................................... 28 5.7 Operation of the proposal .................................................................................................. 31 5.8 Sustainability ...................................................................................................................... 32 6. Stakeholder and community consultation .................................................................................... 35 6.1 Consultation for the proposal ............................................................................................. 35 6.2 Targeted consultation ........................................................................................................ 36 6.3 Future consultation activities ............................................................................................. 36 7. Environmental impact assessment .............................................................................................. 37 7.1 Soils, water quality and flooding ........................................................................................ 37 7.2 Flora and fauna .................................................................................................................. 44 7.3 Visual amenity .................................................................................................................... 50 7.4 Heritage ............................................................................................................................. 53 7.5 Traffic and access .............................................................................................................. 57 GHD | Report for Transport for New South Wales - Gosford South Substation and Wyoming Sectioning Hut REF, 21/24199 7.6 Noise and vibration ............................................................................................................ 61 7.7 Air quality ........................................................................................................................... 76 7.8 Land use and socio-economic ........................................................................................... 78 7.9 Electromagnetic energy ..................................................................................................... 79 7.10 Waste management ........................................................................................................... 81 7.11 Cumulative impacts ............................................................................................................ 82 8. Environmental management ........................................................................................................ 85 8.1 Environmental management plan ...................................................................................... 85 8.2 Summary of mitigation measures ...................................................................................... 85 9. Conclusion ................................................................................................................................... 91 9.1 Justification of the proposal ............................................................................................... 91 9.2 Summary of REF findings .................................................................................................. 91 9.3 Conclusion ......................................................................................................................... 92 10. References ................................................................................................................................... 94 Table index Table 1-1 Structure and content of the REF ........................................................................................ 3 Table 3-1 SEPP 71 Matters for consideration .................................................................................... 15 Table 3-2 Consideration of relevant legislation .................................................................................. 17 Table 3-3 EPBC Act protected matters search results ...................................................................... 20 Table 5-1 Daily construction traffic movements ................................................................................. 30 Table 5-2 Sustainable design guidelines compulsory initiatives ........................................................ 32 Table 7-1 Listed non-Aboriginal heritage items within about 500 metres of the sites ....................... 55 Table 7-2 Potential impacts on non-Aboriginal heritage items .........................................................