This paper describes the environmental protection measures taken by a state road authority in building a freeway across a sensitive wetland. Can such a massive project be constructed while still caring for the environment ? The paper examines the areas of planning, design, construction practices and recycled materials. EIS (Environmental Impact Statement) goals were incorporated in environmental management and control plans to ensure implementation in design and construction phases. The planning and design process minimised impacts by addressing wetland loss and operational pollution concerns, adopting innovative geotechnical and runoff solutions. Construction practices were based on progressive mitigation rather than remedial or cosmetic work, and were refined by a multidisciplinary team approach. Some difficulties were encountered but the overall effectiveness was confirmed by monitoring and independent review. The project made extensive use of recycled materials, particularly power station bottom ash and treated sewage effluent. The paper concludes that an integrated approach to project planning and implementation can be effective in achieving environmental protection. (A)
Abstract