To: Board of Supervisors
Department or Agency Name(s): Sonoma County Public Infrastructure
Staff Name and Phone Number: Johannes J. Hoevertsz, 707-565-2550
Vote Requirement: 4/5th
Supervisorial District(s): Countywide
Title:
Title
Sonoma County Transit - Electric Bus Charging Facility Change Order and Additional Funding
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Recommended Action:
Recommended action
A) Authorize an additional contingency of $334,043.14 for use on the construction contract with Anvil Builders, Inc. for the Sonoma County Transit Electric Bus Charging Facility project.
B) Ratify construction Contract Change Order (CCO) No. 009, dated March 18, 2026, in the amount of $284,566.01. (4/5ths vote)
C) Adopt a budget Resolution authorizing additional Fiscal Year 2026-27 appropriations of $334,043.14, funded with Transportation Development Act (TDA) funds, for the construction contingency amount.
(4/5ths vote)
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end
Executive Summary:
Sonoma County Public Infrastructure (SPI), Transit Division, requests Board authorization of $334,043.14 in contingency for use on the existing contract for the Sonoma County Transit Electric Bus Charging Facility project. The additional contingency is now needed because previous contingency amounts were expended on change orders that became necessary during the early phases of project construction.
The requested $334,043.14 contingency will be used for several pending change orders that total approximately $209,000, and the expected balance of $125,000 will then be available for any further change orders should any more become necessary for completing the project.
SPI also requests Board ratification of Construction Contract Change Order (CCO) No. 009 in the amount of $284,566.01, which exceeded the Director's delegated authority and was executed without prior Board approval.
Discussion:
The Sonoma County Transit Electric Bus Charging Facility project, located at the County's transit facility on West Robles Avenue in Santa Rosa, will provide the charging infrastructure necessary to support the County's transition to a zero-emission transit fleet. The project includes 19 charging spaces designed to accommodate overnight charging for up to 32 battery-electric buses.
On October 3, 2023, the Board awarded a construction contract to Anvil Builders, Inc. in the amount of $4,172,123.40 and authorized a 15% construction contingency of $625,819.
During construction, unforeseen soil conditions and utility conflicts required additional excavation and modifications to the planned electrical infrastructure. Weather-related delays and supply-chain disruptions also contributed to increased labor, material, mobilization, and overhead costs. These changed conditions resulted in additional construction costs that were not anticipated when the original contract was awarded. While a portion of these costs has been addressed through the previously authorized construction contingency, additional appropriations are necessary to account for the increased costs.
To date, the total construction contract costs, including related change orders, is $4,797,942.40. An additional $334,043.14 is due related to pending change orders. Contraction contract costs therefore total $5,131,985.54 as of the date of this Board item.
An amount of $334,043.14 is being requested as part of this Board item. The requested amount will be used to cover the above-described pending change order costs, with the balance of approximately $125,200 remaining available for any other unforeseen costs through project completion. Construction is approximately 95% complete, and the remaining contingency is anticipated to be sufficient to address potential additional costs.
As part of the construction changes, Contract Change Order (CCO) No. 009, dated March 18, 2026, was executed in the amount of $284,566.01. The change order exceeded the Director's delegated authority of $210,000 established by Board Resolution No. 20-0092 and was executed without prior Board approval due to an administrative oversight. Accordingly, SPI requests Board ratification of CCO No. 009 in accordance with Public Contract Code section 20137. The cost of this change order is included within the overall appropriation request and does not represent a separate funding request.
The project was originally funded with $2,000,000 in State Transit and Intercity Rail Capital Program (TIRCP) funds and $2,797,942.40 in Transportation Development Act (TDA) funds. The requested $334,043.14 contract increase will be funded entirely with TDA funds.
Strategic Plan:
This item directly supports the County’s Five-year Strategic Plan and is aligned with the following pillar, goal, and objective.
Pillar: Climate Action and Resiliency
Goal: Goal 4: Maximize sustainability and emissions reductions in all County Fleet vehicles
Objective: Objective 3: Upgrade the existing County owned Electric Vehicle charging station infrastructure by 2023.
Racial Equity:
Was this item identified as an opportunity to apply the Racial Equity Toolkit?
No
Prior Board Actions:
10/3/2023 #13 - Board approved contraction contract to Anvil Builders, Inc.
5/9/2023 #41 - Board approved the purchase of Proterra electric bus charging units.
1/31/2023 #14 - Board approved the purchase of 10 40-foot Proterra battery-electric transit
coaches.
Fiscal Summary
|
Expenditures |
FY26-27 Adopted |
FY27-28 Projected |
FY28-29 Projected |
|
Budgeted Expenses |
|
|
|
|
Additional Appropriation Requested |
$ 334,043.14 |
|
|
|
Total Expenditures |
$334,043.14 |
|
|
|
Funding Sources |
|
|
|
|
General Fund/WA GF |
|
|
|
|
State/Federal |
$334,043.14 |
|
|
|
Fees/Other |
|
|
|
|
Use of Fund Balance |
|
|
|
|
General Fund Contingencies |
|
|
|
|
Total Sources |
$334,043.14 |
|
|
Narrative Explanation of Fiscal Impacts:
Additional appropriations are being requested for FY2026-27 in the amount of $334,043.14 in the Transit Article 4 Capital budget (41401-34040102). The additional appropriations will be funded entirely with TDA funds.
The Sonoma County Transit Electric Bus Charging Facility project is funded with $2,000,000 in State Transit and Intercity Rail Capital Program (TIRCP) funds and $3,131,985.54 in Transportation Development Act (TDA) funds.
Narrative Explanation of Staffing Impacts (If Required):
None.
Attachments:
Budget Resolution
Related Items “On File” with the Clerk of the Board:
Original Contract