Case Study
Republic Services Landfill — Boise, ID
Double-lined landfill containment system with leachate collection for Republic Services in Boise, covering 1.8 million SF over basalt geology.
The Challenge
Problem
Republic Services needed to construct a new landfill cell at their Ada County facility to meet Boise's growing waste disposal needs. Idaho DEQ required a double composite liner system with leak detection and leachate collection engineered for the site's high water table and basalt substrate. The volcanic geology presented unique anchor trench challenges that standard landfill construction methods couldn't address.
Our Approach
Solution
EFI installed a double composite liner system consisting of 80mil HDPE primary and secondary liners with GCL, geocomposite drainage layer, and a leachate collection system. Custom anchor trench designs were engineered for the basalt substrate, and the drainage layer was oversized to accommodate the site's elevated groundwater conditions. Total liner coverage exceeded 1.8 million SF across the cell footprint.
Outcomes
Results & Metrics
Key Outcomes
- 1,800,000+ SF double composite liner installed
- Leachate collection system operational
- Custom anchor trench design for basalt geology
- Idaho DEQ full compliance
- Zero leakage detected since commissioning
- Designed for 30+ year service life
“The basalt geology at this site had stumped two other contractors. EFI's anchor trench engineering solved the problem and their QA program gave us the documentation Idaho DEQ required.”
Republic Services Regional Engineer, Republic Services
Related Work
Similar Projects
Aerospace / GovernmentKennedy Space Center — Cape Canaveral, FL
Landfill40 West Landfill Cell 1, Hagerstown, MD
Pulp & PaperRayonier Advanced Materials — Florida
Have a Similar Project?
Get a free site assessment and custom proposal from our engineering team.
Or call us directly: (307) 264-0309