DESCRIPTION OF WORKS
The Oyster Farm remediation project was located within the world heritage listed Towra Point Aquatic Reserve recognised as a RAMSAR listed site and regarded as a major marine aquatic habitat and breeding zone. Ford Civil implemented robust safety and environmental management controls which were required to ensure that remediation and civil construction activities did not encroach on sensitive aquatic zones or result in deterioration to protected and endangered flora and fauna due to discharge of contaminated materials and sediment.
KEY FEATURES
• Hazardous material removal, demolition and removal offsite of redundant site structures / buildings;
• Excavation and immobilisation (cement stabilization) of over 20,000 tonnes of hazardous waste, asbestos, TBT and tar impacted contaminated soils & sediments under an approved NSW EPA Specific Immobilisation Approval (SIA) process;
• Excavation, treatment and materials handling of contaminated soils under friable asbestos controls and FCCs friable asbestos licence;
• Construction of over 5,400m2 of an engineered capping layer and pavement system to mitigate infiltration of surface water into underlying residual contaminated materials;
• Design and construction of over 400m of perimeter sea wall structures for retention of land and facilitating raising of existing site levels to incorporate 0.5m capping layer. Sea wall comprised PVC sheet pile wall and steel columns with PVC sleeves and caps.
• Additionally, works included permanent stormwater controls, provision of new site services trenching, perimeter safety barriers and supply & placement of artificial reef habitat panels to new sea wall structures for R&D program by DPIE Fisheries.
