Medical Lake, Washington
Cell 5D Construction
Contracting Agency: Waste Management
Completion Date: 2015
Cell 5 D was a small 5 acre site with 31,000 cubic yards of excavation. This project required a 2’ thick soil liner layer prior to placing the geomembrane liner. The soil liner consisted of 13,250 cubic yards of material. This material had a strict gradation and finishing requirement and was produced through a screen from an onsite source. The finishing specification called for no abruptions or depressions more than 0.25”. This specification was met and passed using GPS controlled equipment and a smooth drum roller. After the geomembrane liner was placed 330 feet of leachate collection pipes were placed along with 11,000 tons of drain rock.