Constructed a new engineered waste disposal cell at the Euchareena Road Resource Recovery Centre for Orange City Council, expanding the landfill’s capacity in an environmentally secure manner. The project was delivered with a strong focus on environmental protection and quality assurance, meeting strict regulatory requirements for landfill construction. Our scope of work was comprehensive, turning a greenfield portion of the site into a ready-to-use waste cell. The key tasks we completed were:
Excavation & Subgrade Preparation: Bulk excavation of the cell to the required depth and dimensions, including on-site material management (stockpiling of excavated soil for reuse in capping and bund construction). The subgrade was compacted and graded to form a stable base for the liner system.
Liner System Installation: Deployment of a multi-layer liner system to ensure containment of waste and leachate. This included placement and compaction of a clay liner, installation of a high-density polyethylene (HDPE) geomembrane over the clay, and adding a geotextile protective layer on top. All seams and joins were welded and tested for integrity to meet EPA standards.
Leachate Collection System: Installation of perforated leachate collection pipes at the base of the cell, embedded in a drainage aggregate layer. These pipes leachate directly to a low-point sump.
Ancillary Works: Construction of earthen bund walls around the cell perimeter for separation and to contain waste, as well as all-weather access roads and turning areas for landfill machinery. Surface water diversion drains were built to redirect rainwater away from the cell, preventing excess water ingress.
Quality Control: Rigid quality control and testing regime throughout the build – including compaction testing, HDPE weld testing, and as-built surveys – to certify that the cell was constructed exactly to design and regulatory specifications.
The completed waste cell was delivered on schedule and provides a secure, engineered environment for waste disposal. This project demonstrates our capability in waste management infrastructure, combining heavy civil works with environmental engineering to protect the surrounding land and groundwater.
