This is a full and open invitation for bid for a maintenance dredging project in Contra Costa, Sacramento, and San Joaquin Counties, California. The work involves dredging the San Joaquin/Port of Stockton River to specified depths, with dredged material intended for upland sites or potential beneficial reuse. The estimated cost range for the project is between $5,000,000 and $10,000,000. Prospective bidders must be registered in both the System for Award Management (SAM.gov) and the Procurement Integrated Enterprise Environment (PIEE) to view solicitation documents and submit offers. All bids must be submitted electronically through the PIEE website.