The Headquarters Landfill Cell 7 project involved a 17-acre expansion, requiring site clearing and the excavation of 96,000 CY of material. The landfill lining was carefully constructed with multiple layers, including a granular underdrain, geosynthetic/clay blanket, welded HDPE liner, geotextile fabric, and LCS rock. A perimeter canal was built for stormwater management, and a gas collection system was installed.
Cowlitz County, WA
Cowlitz County Department of Public Works
Excavation, Environmental, Landfills
WA #TAPANI*8830E, OR CCB#63434, ID #RCE – 58709