Cedar Hills Regional Landfill – Area 6 – King County, WA

Design lead for the design of a 500 gpm, duplex, submersible lift station and force main for contaminated storm water/storm water and pumping system to control groundwater beneath the cell’s liner. In addition, design of a 500 foot, 60-inch microtunnel/jack and bore with an 18-inch HDPE pipe for conveying leachate from the Area 6 cell. Provided limited construction review and support services. Assisted in the investigation and resolution of a claim for differing conditions on the microtunnel/jack and bore.