DSOD_Inspection_Reports_on_Spillway_1996-2002_(1).pdf

This is a Request for Qualifications document from the City of Napa, California, seeking qualified multidisciplinary engineering consulting firms specializing in dams to provide comprehensive professional services for the Conn Dam Stability Assessment, Spillway Improvements, and Long-Term Reservoir Expansion Feasibility Study. The City requires consulting firms with expertise in professional engineering, geotechnical analysis, environmental assessment, hydraulic modeling, structural engineering, dam safety, and economic evaluation. The project will be executed in three phases: phase one involves generating a geotechnical data report for submission to the California Division of Safety of Dams (DSOD) by December 31, 2028; phase two includes an assessment of the dam's stability with deformation estimates under static and seismic conditions; and phase three develops a feasibility alternatives analysis report addressing identified deficiencies including known spillway deficiencies. The selected consultant will support regulatory compliance with DSOD, assist in advancing federally authorized flood risk reduction studies through the U.S. Army Corps of Engineers (USACE), and evaluate long-term improvements to increase water supply reliability while preparing the technical foundation for future environmental review, design, permitting, and construction activities.

The City intends to conduct this procurement using a Qualifications-Based Selection (QBS) process consistent with applicable federal procurement requirements under 2 CFR Part 200 and the principles of the Brooks Act, as federal funding is anticipated for both design and construction phases. The Conn Creek Dam project has been included by project name in the 2022 Water Resources Development Act (WRDA), which authorizes federal participation in the project. Federal funding sources are expected to support portions of the design and construction costs, though specific funding amounts and additional cost-sharing requirements are not detailed in this document. The qualifications-based selection approach prioritizes consultant qualifications and experience over price considerations, consistent with federal requirements for federally funded projects.