Agenda

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C. 3

To:	Board of Supervisors
From:	Julia R. Bueren, Public Works Director/Chief Engineer
Date:	March 21, 2017

Contra

Costa

County

Subject:

Contract Amendment to the Consulting Services Agreement with Mark Thomas & Company, Inc., Clayton area.

APPROVE	OTHER
RECOMMENDATION OF CNTY ADMINISTRATOR	RECOMMENDATION OF BOARD COMMITTEE

Action of Board On: 03/21/2017

APPROVED AS RECOMMENDED

OTHER

Clerks Notes:

VOTE OF SUPERVISORS

AYE:

Candace Andersen, District II Supervisor
Diane Burgis, District III Supervisor
Federal D. Glover, District V Supervisor

ABSENT:

John Gioia, District I Supervisor
Karen Mitchoff, District IV Supervisor

Contact:

Kevin Emigh, 925.313.2233

I hereby certify that this is a true and correct copy of an action taken and entered on the minutes of the Board of Supervisors on the date shown.
ATTESTED: March 21, 2017
David Twa,

BY:	, Deputy

RECOMMENDATION(S):

APPROVE and AUTHORIZE the Public Works Director, or designee, to execute a contract amendment with Mark Thomas & Company, Inc., effective January 30, 2017, to increase the payment limit by $73,000 to a new payment limit of $410,000, for professional engineering services for the Marsh Creek Road Bridge (Br. No. 28C-0141) Replacement Project, Clayton area. Project No. 0662-6R4079/Federal Project No. BRLS-5928(107)

FISCAL IMPACT:

This project, including the CSA, is funded by 89% Federal Highway Safety Improvement Program Funds and 11% Local Road Funds.

BACKGROUND:

This project consists of preparing plans, specifications, and estimates, including geological and hydraulic studies for the replacement of the Marsh Creek Road Bridge (Br. No. 28C-0141) over Marsh Creek in eastern Contra Costa County.

BACKGROUND: (CONT'D)

Mark Thomas & Company, Inc. was selected to provide these services. Proposed Amendment No. 2 will amend the payment limit of the agreement in order for the consultant to provide additional professional engineering services that are required to provide additional analysis including creek hydraulic modeling, foundation/structure changes, retaining wall design and driveway access modifications.

CONSEQUENCE OF NEGATIVE ACTION:

The project would be delayed and Federal funds would be in jeopardy.