Environmental restoration and closure of contaminated sediment sites is a top priority for the Department of Defense. Over the next five to ten years, identifying methods to establish long-term remedy success, reducing long-term management costs, and achieving site closure will be of primary concern. New investigation work will largely be associated with identifying recontamination sources within the local and regional watersheds and with emerging contaminants. SERDP and ESTCP convened a workshop to address this shift in site management priorities. The focus of the workshop was on examining the current state of the science and technology for the long-term management of contaminated sediment sites, reviewing the current and projected future status of DoD long-term management activities, identifying data gaps that, if addressed, could aid in the long-term management of contaminated sediments, and prioritizing research and demonstration opportunities to help facilitate regulatory and public acceptance of long-term management strategies for contaminated sediment sites. A review of the research, demonstration, and technology transfer needs identified is presented in the Workshop Report.