Approve thirteenth amendment to Agreement No. 7676-2017 with Ponticello Consulting Engineers, Inc. for engineering consulting services related to the North Davis Meadows County Service Area Water Consolidation Project to increase the maximum compensation by $10,000 to $295,000. (No general fund impact) (Webb/Nguyen)

Approve thirteenth amendment to Agreement No. 7676-2017 with Ponticello Consulting Engineers, Inc. for engineering consulting services related to the North Davis Meadows County Service Area Water Consolidation Project to increase the maximum compensation by $10,000 to $295,000.

Yolo County has been working to address significant water quality issues in the North Davis Meadows (NDM) County Service Area (CSA) for over a decade. In 2017, the NDM community expressed an interest in connecting to the City of Davis for water service to address water quality concerns (the "Water Consolidation Project"). The County entered into a contract with Ponticello Consulting Engineers, Inc. ("Ponticello") in January 2017 for project management services for the extension of potable water from the City of Davis to the North Davis Meadows community. Financing for this project began in 2018, and additional engineering was completed at that time. After a litigation delay that was resolved in favor of the County, the Water Consolidation Project resumed.

A construction bid was posted in the spring of 2024. The County received a total of five bids, with Soracco, Inc. providing the lowest responsive and responsible bid at approximately $3.6 million. The Board of Supervisors approved the award of the construction contract to Soracco, Inc. on August 27, 2024, and the County issued the Notice to Proceed on September 30, 2024. Construction began in October 2024. Ponticello has been instrumental in providing project management services for the Water Consolidation Project. As part of its services, Ponticello has assisted with ensuring the Water Consolidation Project stays within budget, coordinated with the State Water Resources Control Board for grant administration, monitored construction activities, and coordinated with the City of Davis, permitting agencies, and/or other entities as needed. Construction was delayed due to water pressure concerns. In March 2026, the City of Davis installed an altitude valve to increase the water system pressure. Tie-in to the City of Davis water system is expected to occur on Wednesday, July 8th, 2026. 

Under the proposed Thirteenth Amendment (Attachment A), the Ponticello contract maximum compensation will increase by $10,000 from $285,000 to $295,000. Staff recommend the Board approve the Thirteenth Agreement to continue receiving project management services through the completion of the Water Consolidation Project, which will include grant close out activities. If further amendments are needed, County staff will return to the Board of Supervisors for direction.

County Counsel approved as to form
General Services Department, Procurement Division

The Department confirms Ponticello has performed satisfactorily on the current agreement.