TO: Napa County Flood Control and Water Conservation District
FROM: Richard Thomasser - District Manager
REPORT BY: Andrew Butler - District Engineer
SUBJECT: Amendment No. 6 to Agreement No. 220223B (FC) with HDR Engineering
RECOMMENDATION
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Approve and authorize Amendment No. 6 to Agreement No. 220223B (FC) with HDR Engineering, Inc., increasing the maximum from $17,846,772 to a new total of $18,138,826. (Fiscal Impact: $292,054 Expense, Flood Project; Budgeted; Discretionary)
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BACKGROUND
$48.3 million was appropriated in the U.S. Army Corps of Engineers (USACE) budget for Federal Fiscal Year 2021 in the USACE annual Work Plan for the Napa River/Napa Creek Flood Protection Project (Flood Project) to complete the federal responsibilities on the Floodwalls North of the Bypass Project (Increment 2) and the Imola to Hatt Floodwalls Project (Increment 3). These two projects are the remaining elements of the Project that were found to have Federal interest according to the Federal Interest Determination that was produced by USACE in 2020. Staff members have been working with the USACE since 2021 on a process to move forward to use the appropriated funds to complete these two elements.
This amendment increases the maximum compensation of the District’s contract with HDR Engineering, Inc. by $292,054 to a new total of $18,138,826 for tasks related to the Floodwalls North of the Bypass Project construction (Increment 2). The following tasks for this project are included in the scope:
1. Additional support from the engineering team during construction.
2. Additional biological monitoring during construction.
3. Cultural monitoring during construction to fulfill the District’s agreement with local Native American tribes.
4. Project renderings to support the District’s remaining land acquisition actions on Increment 2.
Requested Action:
Approve and authorize Amendment No. 6 to Agreement No. 220223B (FC) with HDR Engineering, Inc.
FISCAL & STRATEGIC PLAN IMPACT
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Is there a Fiscal Impact? |
Yes |
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Is it currently budgeted? |
Yes |
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Where is it budgeted? |
Sub-Division 8001000, Account 52310 |
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Is it Mandatory or Discretionary? |
Discretionary |
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Discretionary Justification: |
Without assistance from HDR, the District is unlikely to be able to complete construction of the project in a manner satisfactory to the US Army Corps of Engineers. |
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Is the general fund affected? |
No |
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Future fiscal impact: |
Activities under this contract will continue through FY 2026-27. |
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Consequences if not approved: |
The District will be unable to progress construction of the project. |
ENVIRONMENTAL IMPACT
ENVIRONMENTAL DETERMINATION: Acquisition of the Subject Property is part of the Napa River/Napa Creek Flood Protection Project and was included in the Final Environmental Impact Report (FEIR) for the Project that was certified by the District on May 4, 1999, for which a Notice of Determination was filed on May 7, 1999. The Final Supplemental Environmental Impact Statement (FSEIS) for the Project was certified by the USACE in its Record of Decision filed on June 9, 1999. On April 2, 2009, the City of Napa determined that the Napa River/Napa Creek Flood Protection Project is consistent with the City's General Plan Envision Napa 2020. On March 25, 2025, after a 45-day public review and response to comments, the District Board certified the Final Subsequent Environmental Impact Report for the Floodwalls North of the Bypass Project which addressed changes to the original design in some areas within the footprint of that project.