Abstract : The US Navy has proposed to homeport a carrier battle group at Everett, Wash. Development of the homeport will involve dredging and disposal of approximately 1 million cu yd of contaminated native material. The US Army Engineer District, Seattle, is providing technical assistance in developing a dredging and disposal plan for these sediments from the East Waterway. In addition, the Seattle District is a permitting agency under Section 10 of the River and Harbor Act of 1899 and Section 404 of the Clean Water Act. The purpose of the WES studies was to evaluate the feasibility of alternatives from an environmental and related engineering standpoint. Three major disposal alternatives were evaluated for disposal of the contaminated sediment: confined upland, confined nearshore, and contained aquatic disposal (CAD). The Navy identified CAD as a preferred alternative during the course of the WES study, and also as the selected alternative in all applications for a Section 404 permit. Keywords: Capping; Confined disposal; Contaminants.