Duwamish Waterway Maintenance Dredging

Construction Project: FY26 Duwamish Waterway Maintenance Dredging. Pre-solicitation Notice Number: W912DW26Z1BY5. The magnitude of construction is estimated to be between $1,000,000 and $5,000,000.The resulting contract will be firm-fixed-price. This contract action will be 100% small business set-aside. USACE Seattle District has a need for construction dredging, project entitled FY26 Duwamish Waterway Maintenance Dredging, Seattle, WA. The work is anticipated to take place during the allowable dredging work window of 15 February ? 1 March for any given year. USACE Seattle District proposes to remove up to 140,000 cubic yards (CY) of accumulated sediment from designated reaches in the Duwamish Waterway federal navigation channel in Seattle, WA. Dredging would occur within the dredging work window of

15 February 2027 through

15 March 2027. The dredging will be accomplished using a clamshell dredge and equipment designed to minimize the potential for impacts to the surrounding environment. Dredged material will be disposed at the Dredge Materials Management Program (DMMP) Elliot Bay Open Water Disposal Site. Dredging in Section A (Sta. 254+00 to Sta. 270+56) and the Turning Basin (Sta. 270+56 to Sta. 275+56) will be to 15 ft MLLW plus 2 ft overdepth. Dredging in Section B (Sta. 242+00 to Sta. 254+00) will be to -15 ft MLLW plus 1 ft overdepth. PLEASE REFER TO THE ATTACHED SOLICITATION DOCUMENTATION FOR COMPLETE DETAILS OF

REQUIREMENTS AND INSTRUCTIONS FOR BID SUBMISSIONS. Geraldine Kemp