To: Board of Supervisors
From: Brian M. Balbas, Public Works Director/Chief Engineer
Report Title: Amendment to Consulting Services Agreement with PreScience Corporation, Concord area
☒Recommendation of the County Administrator ☐ Recommendation of Board Committee
RECOMMENDATIONS:
APPROVE and AUTHORIZE the Public Works Director, or designee, to execute a Consulting Services Agreement (contract) amendment with PreScience Corporation, effective December 31st, 2023, to increase the payment limit by $100,000.00 to a new payment limit of $1,727,747.28 for construction management services for the Marsh Drive Bridge Replacement Project, and to extend the term from December 31, 2023 to December 31, 2024, Concord area. (County Project No.: 0662-6R4119) (Federal Project No.: BRLS-5928 (128)) (District IV and V)
FISCAL IMPACT:
This project, including this Consulting Services Agreement, will be funded by 88.53% Federal Highway Bridge Program Funds and 11.47% Local Road Funds.
BACKGROUND:
The Project consists of removing the existing bridge on Marsh Drive over Walnut Creek (State Bridge No. 28C-0442), which is seismically, structurally, and hydraulically deficient, and construct a new concrete bridge in stages to current standard, reconstructing the roadway approaches from both ends of the bridge, constructing a new separated walking path on the south side of the bridge that will connect to the existing Iron Horse Trail, and incorporating drainage improvements, utility work, erosion control work, and roadway signing and striping.
PreScience was selected to provide construction management services for the Project after completing a request for proposal solicitation and technical proposal process. Construction management services for the Project includes full time inspection, quality assurance materials testing, quality assurance surveying, extensive coordination with project stakeholders including Caltrans, Contra Costa Water District, City of Concord, and the East Bay Regional Park District, and in-field decision making to ensure the Project is built per plans and specifications and meets County, City, and Caltrans Standards. Construction management services also include recording daily activity and equipment on-site and maintaining required project documentation. Public Works has successfully negotiated with PreScience to provide construction management services.
On March 30, 2021, the Board of Supervisors approved an initial contract with PreScience Corporation in the amount of $1,581,016.64 for construction management services for the Public Works Department. Although in-field construction is complete, project closeout activities remain and are taking longer than originally anticipated. This Amendment No. 3 increases the payment limit and extends the contract term which is necessary for continuation of construction management services.
Government Code Section 31000 and 4525 authorizes the County to contract for services including the type of construction management that PreScience Corporation provides.
CONSEQUENCE OF NEGATIVE ACTION:
Without Board of Supervisors’ approval, this Consulting Services Agreement will not be in effect. A delay in the completion of the Project will occur. Project delay may also result in substantial additional project costs and jeopardize the funding.