The project at Ti Tree Bio-Energy Facility involves the construction of a leachate liner system on a new "piggyback" landfill cell, integrated with an existing monocell. It includes rehabilitation of a former coal mine while maintaining public operations at the waste facility. Key tasks include bulk earthworks, the installation of various liners and geosynthetic materials, groundwater management systems, and stormwater drainage. The scope also covers the necessary site preparation, excavation, material handling, and coordination of safety and environmental controls. Additionally, the project entails detailed planning and communication with stakeholders throughout the process, with a strong focus on sustainability and compliance with legislative requirements.
Scope of Works:
Clearing and grubbing of 110,600 m²
Bulk earthworks (cut and fill) to achieve liner level, excavation, filling, and compaction for Cell 7
Removal and disposal of existing caps and material as necessary
Supply and installation of various geosynthetic materials (GCL, HDPE geomembrane, LLDPE geomembrane, geogrids)
Construction of anchor trenches and connection to existing liners
Placement of leachate drainage aggregate and separation geotextiles
Excavation and compaction for the formation of Cell 7 and perimeter, including northern "plug"
General fill to complete formation and sub-base layers
Excavation and backfilling of riser trench
Supply and installation of groundwater underdrain systems
Design and installation of a leachate pump and ring-main system
Connection of groundwater collection systems to the existing leachate management system
Installation of stormwater drainage infrastructure
Constructing and backfilling of drainage trenches
Implementation of erosion and sediment control measures
Environmental protection, site management, and compliance with legislative requirements
