Principal: Penrith Lakes Development Corporation
Location: Penrith, New South Wales
Contract Value: $7,850,000
Completion Date: August 2008
The Penrith Lakes Scheme covers an area of just under 2,000 hectares, located in the Penrith Valley bounded by the Nepean River and the foothills of the Blue Mountains.
The project involved dredging of approximately 1,300,000m3 of sand, silts and clays from a central tailings storage facility to a land reclamation site 4.4 km away. The materials are being placed in a manner which enabled the coarser fractions of the tailings to be separated from the silts and clays. This methodology allowed the coarser material to remain in the reclamation area where it was placed as a level one fill. The fine material was picked up with the tailwater from the reclamation site and pumped to a purpose built tailings facility adjacent to the reclamation.
A key objective of the project was the creation of enough volume in the central tailings storage facility to enable continued operation of the quarry processing plants. Also, the material dredged was used to increase the amount of land available at the Penrith Lakes site for future urban development as an end use for the site after completion of the quarry activities.