The project was delivered in the heart of the Sydney CBD, highly exposed to the public eye. Therefore, diligent environmental management featured prominently in the delivery strategy. The largest components of this included asbestos removal, noise and vibration management and dust suppression. The site-specific Environmental Management Plan regulated site issues such as dust suppression, noise pollution, exhaust emissions and stormwater pollution prevention. One of the bigger picture environmental benefits was the re-use of an existing site, rather than a greenfield site. This, coupled with the re-use of the steel structure and the inherent resource savings associated with removing the need for all that new steel, resulted in significant impact savings to the broader environment. Early on, noise and vibration monitors were established in surrounding buildings to determine whether demolition activities were creating excessive noise so prompt action could be taken. Given the unique nature of the concrete de-casement of steel members, anti-vibration matting and polystyrene dampers were strapped to columns above the location of demolition works to dampen the sound generated from the jack hammers. While complaints could not be avoided in the populous Martin Place location, they minimised the severity and loss of amenity to neighbouring properties through hands-on environmental management. In addition, the project manager led proactive stakeholder management by responding immediately to noise complaints from neighbours and explaining construction activities as well as the duration of works. With their complaints thus heard, members of the public were less inclined to raise further issue. As part of the effort to divert construction and demolition waste from landfill, Built went as far as implementing options for separating out non-contaminated and contaminated demolition waste on site. This resulted in diverting more than16,000 tonnes of facade concrete and brick from hazardous waste landfill. This had a dual benefit of diverting a large amount of concrete and brick into the recycled aggregate stream instead of landfill and saved the project in the order of $4.5 million in landfill fees. Overall, the project achieved a recycling rate in excess of 95 per cent. This project has shown how careful planning and a site-specific Environmental Management Plan can monitor and respond to environmental issues such as dust suppression, noise pollution, exhaust emissions and stormwater pollution prevention before they become a problem. It has also shown how to reduce waste to landfill by separating out non-contaminated and contaminated demolition waste on site, resulting in usable materials being diverted into the recycled aggregate stream instead of landfill. It is a worthy winner of the Excellence in Environmental Management, Construction Awards for 2016 in the price bracket of over $50 Million.
Category
Construction (Commercial) » Excellence In Environmental Management
Price
$50,000,001 & OVER
Year
2016
Company
Built
Project
20 Martin Place
Suburb
Sydney
Prize
Winner