Request for Qualifications - Conn Dam Stability Assessment, Spillway Improvements, and Feasibility Alternatives Study
Open State & local contract opportunity Posted
- Solicitation number
- 2026-RFQL-054
- State
- California
- Responses due
Opportunity facts
- Jurisdiction
- Point of contact
-
- Joy Eldredge jeldredge@cityofnapa.org (707) 257-9319
Opportunity details come from procurement.opengov.com. Updated .
About this opportunity
The City of Napa is requesting qualifications from multidisciplinary engineering consulting firms for the Conn Dam Stability Assessment, Spillway Improvements, and Feasibility Alternatives Study, with proposals due October 29, 2026 by 4:00 p.m. The procurement uses a Qualifications-Based Selection process under the Brooks Act and 2 CFR Part 200, excluding cost from evaluation; price proposals shall not be submitted. Top-three ranked firms will be invited for oral interviews.
The scope spans three phases: Phase One, generating a geotechnical data report for submission to the California Division of Safety of Dams by December 31, 2028; Phase Two, assessing dam stability with deformation estimates under static and seismic conditions; and Phase Three, developing a feasibility alternatives analysis addressing identified spillway deficiencies. Required disciplines include professional engineering, geotechnical, environmental, hydraulic, structural, dam safety, and economic evaluation services.
The prime consultant must be legally authorized to perform engineering services in California, maintain a local office, possess 10 or more years of continuous dam engineering experience, and demonstrate successful completion of at least three embankment dam projects exceeding 75 feet in height within the past 15 years. The proposed project manager must be a California-registered civil engineer with 15 or more years of professional experience, at least 5 years managing dam safety projects, and experience managing projects exceeding $20 million in construction value.
Federal funding sources include the U.S. Army Corps of Engineers, Water Resources Development Act (WRDA 2022), Corps Water Infrastructure Financing Program, Federal Emergency Management Agency, Bureau of Reclamation, and EPA State Revolving Fund programs. Conn Creek Dam is authorized under WRDA 2022. Respondents must comply with Uniform Guidance, NEPA, Clean Water Act, Endangered Species Act, civil rights and labor regulations, and maintain active System for Award Management registration. All project records must be retained for a minimum of five years after final closeout.
Opportunity text
1. Introduction
The City of Napa ("City") requests qualifications ("Qualifications") from qualified individuals or firms (individually, a "Respondent" and collectively, "Respondents") for Request for Qualifications - Conn Dam Stability Assessment, Spillway Improvements, and Feasibility Alternatives Study ("Project"). The City is seeking highly qualified multidisciplinary engineering consulting firms specialized in dams to provide professional engineering, geotechnical, environmental, hydraulic, structural, dam safety, and economic evaluation services for the Conn Dam Stability Assessment, Spillway Improvements, and Long-Term Reservoir Expansion Feasibility Study.
The selected Consultant shall provide comprehensive engineering services to support regulatory compliance with the California Division of Safety of Dams (DSOD), assist the City in advancing federally authorized flood risk reduction studies through the U.S. Army Corps of Engineers (USACE), evaluate long-term improvements to increase water supply reliability, and prepare the technical basis for future environmental review, design, permitting, and construction.
The City intends to procure these services using a Qualifications-Based Selection (QBS) process consistent with applicable federal procurement requirements, including 2 CFR Part 200 and the principles of the Brooks Act, as it is anticipated federal funding will be a part of the design and construction funding.
The first phase of the project will generate a geotechnical data report that must be submitted to DSOD by December 31, 2028 followed by phase two with an assessment of the dam's stability, including deformation estimates, under static and seismic conditions. Phase three will develop a feasibility alternatives analysis report addressing all identified deficiencies including the known spillway deficiencies. The City has been included by project name Conn Creek Dam, California in the 2022 Water Resources Development Act of 2022 (WRDA) and requested to be included in the USACE WRDA 2028 workplan with goal of completion of the alternative and design within 3 years inclusion in work plan.
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