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preset schedule in order to retain the largest possible habitat for native fauna.
Building refurbishment and upgrading
One of many examples of refurbishment and upgrading projects is the heritage-protected former Scheidt textile factory in Kettwig, Essen, undertaken in a joint venture with HOCHTIEF Construction. The building, which dates back to 1724 and has been vacant since 1988, is now being turned into some 36 premium condominiums in close consultation with the heritage authorities.
Biodiversity
Another form of species conservation was provided by the Leighton Asia team building a new aviation fuel supply facility at Hong Kong’s Chek Lap Kok Airport. Hydraulic hammers used to drive piles for a jetty would normally cause considerable underwater noise. Although the project is located in industrial surroundings, the jetty area is a habitat of Chinese white dolphins, which are on the IUCN Red List of Threatened Species . To protect them, the team designed a bubble jacket—a kind of sleeve that goes over the outside of each pile. Compressed air is injected at the base of the pile, with the effect of minimizing underwater noise and protecting the dolphins from high noise levels.
Key Figures
The data is estimated from material-specific cost types
assuming average prices.
Environmental damage
In 2003, HOCHTIEF initiated a reporting system for environmental damage to be applied across all divisions. No environmental damage was caused in the period under review.
Our subsidiary Leighton classifies environmental incidents into three levels:
| Level 1: | High severity, irreversible detrimental effect on the environment |
| Level 2: | Medium severity, persistent but reversible detrimental effect on the environment |
| Level 3: | Low severity, detrimental effect can be reversed in less than three months |
No high-severity incidents were recorded in fiscal year 2006/2007 or 2007/2008. For further information, please see http//www.leighton.com.au.