Foothills Regional Services Commsion contracted Devcon to excavate the new landfill cell, expanding Cell 6. This required removing topsoil, subsoil, clay, and rock cobble. After preparing the Cell 6 subgrade, crews installed a 750 mm clay liner compacted to 96% SPMDD, with moisture kept 2–5% above optimum. Additionally, Devcon supplied and installed a 60-mil HDPE liner, Geosynthetic Clay Liner, two-sided geo-composite, heavy non-woven geotextile, 200 mm perforated PVC leachate collection pipe, 300 mm HDPE riser, 150 mm PVC sub-drain pipes and risers, and all related fittings and connections.Once the geosynthetic liner system was completed, a tire-shred protection layer was placed.