Area 6 Stage 2 Closure, Area 7 Phase 1 Excavation, and Pump Station Improvements Phase 2
Contracting Agency: King County & Parametrix
Completion Date: 2009
The area 7 phase 1 excavation project included over 300,000 cubic yards of excavation for a future cell and screening of the material for use as cover material. The area 6 stage 2 closures included both final cover of 6 acres and interim cover of 2 acres. The closure also consisted of landfill gas piping, leachate collectors, placement of foundation layer, placement of drain sand layer and placement of topsoil layer. Also included were pump station modifications at multiple locations.