The document summarizes the construction methods used for the East Duden Property portion of the Napa River Flood Protection Project. Key aspects included excavating 96,000 cubic yards of contaminated material from the marshplain and floodplain, installing 2,300 feet of turbidity curtain, constructing 1,450 feet of new levee and repairing 1,800 feet of existing levees. 20,000 tons of contaminated materials were removed to a Class II landfill. The marshplain was excavated to an elevation of 0.0 feet and the floodplain was terraced. 60,000 cubic yards of material was screened to remove debris and 25,000 cubic yards of concrete was crushed.