Christchurch City Council Outfall

OCEL engaged as a subconsultant to URS New Zealand Limited to provide design and supervision of the offshore component of this outfall comprising an 1,800 mm diameter PE pipeline connected to an 1,800 mm diameter microtunnel terminating 750 m offshore. Total length of the ocean outfall which is completely buried below the seabed with risers discharging through duckbill fitted rosette diffusers discharging 1 m above seabed in 17 m water depth is 3,000 m. Project commenced 2007 – completed March 2010.