Waste Water Treatment Plant within Changi Water Reclamation Plant Roles : Structural Engineering Sewage Treatment Plant 1 Roles : Structural and Geotechnical Engineering Bedok Canal Contract 2 Roles : Geotechnical Engineering Cable tunnel, NS1 Roles : Structural (Temporary) and Geotechnical Engineering Digestor and Efficient Pumping Station Roles : Geotechnical Engineering Waste Water Pretreatment Facilities (WWPT), Banyan Avenue Roles : Structural Engineering