Northpoint Enterprise Park, Cooper Street Stage 4B Wetland construction.

Works included: Topsoil stripping and stockpiling for later re-use, Excavation of in-situ materials to design levels, inclusive of over-excavation and placement of compacted clay liner materials, Excavation to subgrade levels within detention pond areas for placement of rock beaching, Sifting, resizing and sorting of spoil, Importing and placement of clay liner and fill materials. Placement of rock beaching and toe rocks, Installation of 300mm draw down line, wetland outlet ,draw down  and baffle pits, Installation of transfer pipes, inlet pits and gross pollutant trap; Re-topsoiling works and placement of Jutemaster jutematting. Installation cement treated maintenance access tracks