To: Board of Directors Sonoma Valley County Sanitation District
Department or Agency Name(s): Sonoma Valley County Sanitation District
Staff Name and Phone Number: Grant Davis (707) 547-1911; Jason Roberts (707) 791-4461
Vote Requirement: 2/3rd
Supervisorial District(s): First
Title:
Title
Sonoma Valley County Sanitation District Treatment Plant Roof Replacement (Administration and Maintenance Buildings) - Contract Award
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Recommended Action:
Recommended action
A) Adopt and approve the Project Manual and Drawings (“plans and specifications”) entitled “Sonoma Valley County Sanitation District Treatment Plant Roof Replacement (Administration and Maintenance Buildings)”
B) Award the contract to Diablo Roofing, Inc. for $301,068.00 for construction of Sonoma Valley County Sanitation District Treatment Plant Roof Replacement (Administration and Maintenance Buildings) and authorize the Chair to execute the contract.
C) Authorize the General Manager of Sonoma County Water Agency [on behalf of Sonoma Valley County Sanitation District (District) acting on behalf of District] to sign Section 00 65 23 (Agreement and Release of Any and All Claims), with County Counsel review, if any unresolved claims are listed by the contractor.
(2/3rd. Vote Required) (First District)
end
Executive Summary:
This item requests approval of a contract with Diablo Roofing, Inc. for $301,068.00 for construction of Sonoma Valley County Sanitation District Treatment Plant Roof Replacement (Administration and Maintenance Buildings) Project, to remove and replace aged and deteriorated roofs on critical operations and maintenance buildings.
Discussion:
The Administration and Maintenance buildings at the Sonoma Valley Treatment Plant, located at 22675 8th Street East, Sonoma, California 95476, are critical facilities for the operation and maintenance of the treatment plant. Both roofs are aged and deteriorated, and leaks have been reported in both buildings during rain events.
The Project consists of removing the existing roof systems of the Administration and Maintenance Buildings and installing new membrane roof systems on each building. Bidding Documents contain the full description of the Work.
The engineer’s estimate was $281,200.00. The Project was advertised for bids on April 24, 2025.
On May 27, 2025, three bids were received per the attached Bid Summary. The lowest responsive and responsible bid is from Diablo Roofing, Inc. and is $19,868.00 above the Engineer’s Estimate. Diablo Roofing Inc. is experienced in this type of construction and meets the experience requirements.
A contractor must execute a release of claims (Section 00 65 23) before final payment but may except any unresolved claims from the release. The requested action authorizes the General Manager to approve the release unless the contractor lists unresolved claims. In that case, County Counsel must review Section 00 65 23 prior to General Manager approval.
Construction on the Project is scheduled to begin approximately September 1, 2025, with an estimated completion date of December 8, 2025.
California Environmental Quality Act
The General Manager has determined that the Project is categorically exempt from the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines Sections 15301(b), Existing Facilities, and 15302(c), Replacement or Reconstruction. The project will consist of the operation and repair of existing structures and facilities of publicly owned utilities involving negligible or no expansion of existing or former use. The project will replace and reconstruct existing structures and facilities where the new structure will be located on the same site as the structures replaced and will have substantially the same purpose and capacity as the structure replaced, including existing utility systems and/or facilities involving negligible or no expansion of capacity. Sonoma Water staff prepared a Notice of Exemption (NOE) for the project in accordance with CEQA, the State CEQA Guidelines and Sonoma Water’s Procedure for the Implementation of CEQA.
County of Sonoma Strategic Plan:
N/A.
Sonoma Water Strategic Plan Alignment
This item directly supports Sonoma Water’s Strategic Plan and is aligned with the following goal, strategy, and action item.
Goal: 2. Planning and Infrastructure - Implement comprehensive, integrated, and innovative infrastructure planning to strengthen existing services, minimize life cycle costs, and prepare for the future.
Strategy: 2.3 Fund and implement the planned capital and maintenance projects on schedule to ensure reliable services.
Action Item: 2.3.2 Fund Capital Improvement Program budgets to meet infrastructure needs.
Racial Equity:
Was this item identified as an opportunity to apply the Racial Equity Toolkit?
No
Prior Board Actions:
10/13/2020: Authorized Sonoma County Water Agency’s General Manager acting on behalf of Sonoma Valley County Sanitation District to execute an Agreement with Allana Buick & Bers, inc. for engineering and design services through September 15, 2023, in the not-to-exceed amount of $245,000; Authorized Sonoma County Water Agency’s General Manager to amend the agreement provided amendments do not cumulatively increase the total cost to Sonoma County Water Agency by more than 10 percent, while retaining authorities under Resolution 04-0547, extend the term, and make modifications to the scope of work.
Fiscal Summary
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Expenditures |
FY25-26 Adopted |
FY26-27 Projected |
FY27-28 Projected |
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Budgeted Expenses |
$301,068 |
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Additional Appropriation Requested |
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Total Expenditures |
$301,068 |
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Funding Sources |
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General Fund/WA GF |
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State/Federal |
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Fees/Other |
$301,068 |
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Use of Fund Balance |
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General Fund Contingencies |
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Total Sources |
$301,068 |
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Narrative Explanation of Fiscal Impacts:
Total Budgeted amount of $301,068 is available from FY 2025/2026 appropriations for the Sonoma Valley County Sanitation District Operations Fund. No additional appropriations are required to process this expense.
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Staffing Impacts: |
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Position Title (Payroll Classification) |
Monthly Salary Range (A-I Step) |
Additions (Number) |
Deletions (Number) |
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Narrative Explanation of Staffing Impacts (If Required):
N/A
Attachments:
Bid Summary
Related Items “On File” with the Clerk of the Board:
Project Manual and Drawings