M8 Sustainable – Landfill Development

Doolee were engaged as the head contractor to deliver a landfill development comprising of main cell, sediment and leachate pond for M8 Sustainable at their maiden landfill development in Gingin, WA. In total there was 500,000m³ cut and fill, installation of HPDE liner and geotextiles, HDPE piping, concrete plinths, stormwater drainage and installation of pump station. Doolee undertook the civil aspects of the project working closely with M8 Sustainable and other stakeholders to ensure smooth completion of the project.Applying the same rigorous standards required for tailing storage facility construction, our work on the M8 project utilised high-spec geomembrane lining systems to prevent seepage.

The project started in June 2021 with completion in March 2023.

• Bulk earthworks: Cut and fill over 500,000m³
• Clearing and grubbing
• Excavate and final trim landfill cell and ponds
• Create on-site quarry and manufacture material for roadways
• Installation of 3km of internal access roads
• Drainage and culvert installation
• Installation of three layers of geotextiles
• Installation of two layers of HDPE liner

Landfill development requires the same level of precision as complex civil construction for mining utilities and containment ponds.

Challenges

• Rural location
• Long lead items
• Fauna intrusions
• Fire ban restrictions

Highlights

• Project delivered on time
• Job delivered safely, no notifiable incidents
• QA for the work completed
• Complex 5 layer geosynthetic lining system delivered