The Sustainability in Infrastructure Awards recognise projects, organisations and individuals who demonstrate leadership in advancing infrastructure sustainability.
Sydney Metro Northwest Tunnels and Station Civil is a 1.15 billion dollar 15-kilometre twin tunnels development between Bella Vista and Epping, being delivered by Thiess John Holland Dragados (TJHD).
The Sydney Metro Northwest project’s tunnel builders have been awarded a ‘Leading’ Infrastructure Sustainability (IS) Design rating by the Infrastructure Sustainability Council of Australia (ISCA).
ISCA CEO Antony Sprigg says, “ISCA aims to recognise and encourage beyond business-as-usual sustainability activities in the planning, construction and operational phases of infrastructure projects.”
“The achievement of a ‘Leading’ IS Design rating – the highest possible level – is truly an exemplary performance and an inspiration of what can be achieved when sustainability practices are adopted, he said.”
The TJHD team has excelled in sustainability management and systems, achieving maximum scores in five management systems credits:
•Sustainability leadership and commitment
•Management system accreditation
•Risk and opportunity management
•Organisational structure roles and responsibilities
•Inspection and auditing.
TJHD reduced emissions by 24 per cent through initiatives including the use of B5 blended fuel, hybrid excavators, fuel efficient training and awareness programs, design optimisation and reduced electricity consumption. Closed-loop recirculation networks reduced water use by 37 per cent from the reference footprint.
The TJHD design substituted more sustainable components, for example in its high strength concrete mix, enabling a 45 per cent reduction in ecopoints for its materials score. The design also provided best practice flood immunity to protect station evacuations from the probable maximum flood event through a flood management protocol, barriers, pumps and sumps.
TJHD Project Director Terry Sleiman says, “The whole team has been committed to a ground-breaking vision for sustainable infrastructure delivery of the twin tunnels and civil works for five stations and two services facilities.”
“While constructing a high quality, value-for-money asset, TJHD has worked collaboratively to find sustainability initiatives that reduce environmental impacts on communities, ensure sites are safe for workers and the community, and maximise social benefits.”