Agenda

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C. 1

To:	Board of Supervisors
From:	Brian M. Balbas, Public Works Director/Chief Engineer
Date:	October 20, 2020

Contra

Costa

County

Subject:

APPROVE the Storm Damage Repair, Alhambra Valley Road west of Castro Ranch Road Project and take related actions under CEQA.

APPROVE	OTHER
RECOMMENDATION OF CNTY ADMINISTRATOR	RECOMMENDATION OF BOARD COMMITTEE

Action of Board On: 10/20/2020

APPROVED AS RECOMMENDED

OTHER

Clerks Notes:

VOTE OF SUPERVISORS

AYE:

John Gioia, District I Supervisor
Candace Andersen, District II Supervisor
Diane Burgis, District III Supervisor
Karen Mitchoff, District IV Supervisor
Federal D. Glover, District V Supervisor

Contact:	Sandeep Singh 925-313-2022
cc:	Ave' Brown Sandeep Singh

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: October 20, 2020
David Twa,

BY:	, Deputy

RECOMMENDATION(S):

APPROVE the Storm Damage Repair, Alhambra Valley Road west of Castro Ranch Road Project (Project) and AUTHORIZE the Public Works Director, or designee, to advertise the Project, Pinole area. [County Project No. 0672-6U6225, DCD-CP#19-39] (District I).


DETERMINE the Project is a California Environmental Quality Act (CEQA), Class 1(c) Categorical Exemption, pursuant to Article 19, Section 15301 of the CEQA Guidelines, and

RECOMMENDATION(S): (CONT'D)

DIRECT the Director of Department of Conservation and Development to file a Notice of Exemption with the County Clerk, and

AUTHORIZE the Public Works Director or designee to arrange for payment of a $25 fee to the Department of Conservation and Development for processing, and a $50 fee to the County Clerk for filing the Notice of Exemption.

FISCAL IMPACT:

Estimated Project cost: $723,000. 100% Local Road Funds.

BACKGROUND:

The purpose of this project is to reconstruct the road embankment and stabilize the roadside shoulder along the westbound lane of Alhambra Valley Road. Repair of the embankment is necessary to prevent further deterioration of the roadside shoulder and to provide support to the roadway.

The project will consist of regrading the slope and roadside shoulder which will require excavating the failed material within the eroded area and regrading with imported fill material to a maximum slope of 1.5:1. One drainage inlet will be established in place of an existing catch point. A hot mix asphalt dike, section of guardrail, and minor concrete vegetation control will be constructed along the top of the reconstructed slope. Equipment staging will likely occur just east of the slide, on the shoulder of the westbound lane. Some debris removal may be required in the slide area and the upstream drainage ditch. Roadway surface drainage will be restored to previous conditions. Channelizers and k-rail may reduce lane width for the duration of construction at this site. Construction is currently anticipated to occur in the summer of 2021 and take approximately 15 days to complete.

CONSEQUENCE OF NEGATIVE ACTION:

Delay in approving the project may result in a delay of design, construction, and may jeopardize funding.