Since 2001, Green Contractor Award Scheme has been running to encourage our contractors to pay more attention to the environmental aspects in view to achieve higher standards and continual improvement in their environmental performance on construction sites. All ArchSD projects under construction in 2007 with contract sums over $15 millions were included in the assessment. Starting from 2007, the Scheme was extended to include contractors working on ArchSD maintenance projects. Only those contracts with highest scores in environmental performance are listed in the award announcement.