TO: Napa County Flood Control and Water Conservation District
FROM: Richard Thomasser - District Manger
REPORT BY: Richard Thomasser - District Manager
SUBJECT: Award Construction Contract for the Floodwalls North of the Bypass Project, FC26-01
RECOMMENDATION
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Award a Construction Contract to Shimmick Construction Company, Inc., of Suisun City, California for the Floodwalls North of the Bypass Project, FC26-01. (Fiscal Impact: $32,812,575 Expense; Flood District- Flood Projects Fund; Budgeted; Discretionary)
(4/5 Vote Required)
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BACKGROUND
In 2021, the Napa River/Napa Creek Flood Protection Project received Federal funding in the amount of $48.3M to complete the remaining Increments 2 and 3. Napa County Flood Control and Water Conservation District (NCFCWCD) and United States Army Corps of Engineers (USACE) entered into a 204 Project Partnership Agreement which allowed NCFCWCD to take the lead on design and construction for the remaining work.
On September 30, 2025, District staff issued an Invitation for Bid for the Floodwalls North of the Bypass Project (Increment 2). These floodwalls extend between the Napa River Bypass to just south of the Elks Lodge along the west bank of the Napa River in the City of Napa. The project will also complete the floodwalls at the bypass channel by closing two "gaps" that were left to allow for overland flows that could exist during flood events in the interim situation.
On November 21, 2025, staff led interested parties on a mandatory tour of the project. Representatives from 31 companies attended the tour. Seven contractors submitted proposals by the deadline of January 20, 2026, at 4:30 pm. Shimmick Construction Company, Inc., submitted a low bid of $32,812,575. District staff reviewed the bid and found it to be responsive. Staff recommend that the District Board approve and enter into an agreement with Shimmick Construction Company, Inc. for total compensation of $32,812,575 to complete the construction w...
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