Construction of a new landfill cell and leachate containment system, including integration with two adjacent active landfill cells.

Scope of Works:

• Cut-to-fill over 50,000 m² and placement of 80,000 tonnes of subgrade material.
• Implementation of traffic management plans for public access through the operational landfill, with controlled site entry via the main weighbridge.
• Coordination around live landfill gas extraction networks, requiring excavation permits, safe work procedures, and measures to stabilise batters while working in a biogas environment.
• Strategic earthworks planning to tie into active landfill cells with waste, leachate, and biogas considerations.
• Containment System Installation (Approx. 45,000 m²):
  • Geosynthetic clay liner.
  • 2.0mm HDPE liner.
  • Cushion geotextile.
  • Leachate drainage aggregate.
  • Leachate collection pipework (180mm and 315mm PE pipes) and valves.
  • Integration with the existing leachate collection sump.
  • Temporary edge bunds for future cell connectivity.
  • Clay liner installation to support the geocomposite containment system.
• Perimeter Access Road Construction (440m):
  • Subgrade preparation, cut-to-fill formation, and road base pavement (300mm Type 2.3).
  • Drainage crossings with three 600mm diameter PE pipes.
  • Edge protection, roadside furniture installation, and clean water diversion drain lined with geotextile, topsoil, and turf.
  • Clean and dirty water drainage diversion.