Landfills & Environmental

Keystone Civil delivers landfill cells and environmental infrastructure where precision, quality and careful construction control matter. Our experience brings together earthworks, engineered liners, drainage, leachate systems and supporting civil works within complex and environmentally sensitive sites.

These projects leave little room for error. Our teams coordinate each stage carefully, working with clients, designers, quality assurance personnel and specialist contractors to meet design, environmental and regulatory requirements while protecting completed works throughout construction.

Our Capabilities

• Landfill cell construction
• Cell excavation and formation
• Subgrade preparation
• Engineered liner systems
• Clay liners
• Geosynthetic liners and geomembranes
• Geotextiles and geocomposites
• Leachate collection and drainage systems
• Collection pipework and sumps
• Stormwater and separation drainage
• Environmental and sediment controls
• Gas pipework installation
• Surface water management
• Access roads and bunding
• Associated earthworks
• Rehabilitation
• Capping-related civil works
• Quality assurance support
• Survey coordination
• Specialist liner contractor coordination

Controlled at Every Stage

Landfill and environmental projects rely on getting each layer, level and interface right before the next stage begins. Keystone brings a disciplined approach to formation levels, subgrade conditions, liner installation, drainage grades, material placement and compaction.

We coordinate inspections, testing and approvals throughout construction, making sure completed stages are verified before subsequent systems are installed. This provides greater certainty around quality while reducing the risk of issues being carried forward.

Environmental controls are considered throughout delivery, particularly when working around waterways, floodplains and sensitive ecosystems. The result is a carefully managed construction process that protects both the integrity of the infrastructure and the environment around it.