MELBOURNE DOCKLANDS PRECINCT DEVELOPMENT & THE FORMER WEST MELBOURNE GASWORKS REMEDIATION PROJECT Andrew Labbett – Associate Remediation Engineer Presentation Outline • • • • Melbourne Docklands - proximity/size History of the Melbourne Docklands Area The Docklands Authority The Former West Melbourne Gasworks Remediation Project – What it was – What we found – What we did • The visions being realised… Melbourne Docklands Precinct • Central Business District • Melbourne Docklands Melbourne’s West – 1864 Melbourne’s West – 1858 West Melbourne Gasworks – 1928 West Melbourne Gasworks – 1937 Contaminant Sources • • • • • • • • Wharf/ Coal Loading Area Coal Stores Retorts Purifiers Sulphate & Ammonia Plant Gasholders Tar Pits & Tanks Plant Upgrades Dereliction of The Wharfs, Railyards & Gasworks • Ship freight became more containerised – hence bigger, open yards and deeper docks required (Appleton, Webb and Swanston Docks). • Charles Grimes Bridge pushed larger ship docking sites westwards. • Modern day transport methods (air & truck) made large shunting yards redundant. • Discovery & use of natural gas from Bass Strait saw gasworks closed in 1970. • Derelict waterfront area now ripe for “reconnection” with the city. West Melbourne Gasworks & Docklands – 1989 West Melbourne Gasworks & Docklands – 1989 Docklands Authority Melbourne Docklands Development Precincts Wooden Piles… Coal Tar… Soil Treatment Processes Waste Minimisation – Soil Screening Waste Minimisation – Concrete Recycling Waste Minimisation – Soil Treatment Remediation Works Remediation Project Statistics • • • • • • • • • • • 7.6 hectare site 273,000 m3 material excavated (1.0 – 8.3 m below original grade) 4100 Wooden Piles & 460 Steel Encased Concrete Piles 1700 stockpiles 50,000 truck movements 35% of excavated material recycled 69,000 m3 of intra-precinct material imported and used as fill Over 300,000 tonnes of ‘Contaminated Soil’ to landfill 40,000,000 litres water treated and disposed (some for dust) 500 site inductees $45 M plus for level site. Victoria Harbour Precinct - 2009 Victoria Harbour Precinct – 2009 (N – S) Victoria Harbour Precinct – 2009 (W – NE) Victoria Harbour Precinct – 2009 (S – NW) Victoria Harbour Precinct – 2009 (S – N) Victoria Harbour Precinct – 2009 (Mid – S) Summary of Whole-Precinct Development Benefits • Ability to optimise best sites for purpose (i.e. ensure correct mix of open space, residential, commercial) based on levels of contamination. • “Over-kill” remediation – i.e. sustainability considerations can be made. • Odours, dust & other construction emissions have less impact. • Materials and treatment-space sharing (when appropriate). • Services sharing/ staged development. Thank You!