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C. 1

To:	Board of Supervisors
From:	Julia R. Bueren, Public Works Director/Chief Engineer
Date:	May 24, 2016

Contra

Costa

County

Subject:

APPROVE the Marsh Creek Gap Closure Project and related actions under the California Environmental Quality Act.

APPROVE	OTHER
RECOMMENDATION OF CNTY ADMINISTRATOR	RECOMMENDATION OF BOARD COMMITTEE

Action of Board On: 05/24/2016

APPROVED AS RECOMMENDED

OTHER

Clerks Notes:

VOTE OF SUPERVISORS

AYE:

John Gioia, District I Supervisor
Candace Andersen, District II Supervisor
Mary N. Piepho, District III Supervisor
Karen Mitchoff, District IV Supervisor
Federal D. Glover, District V Supervisor

Contact:	Alex Nattkemper, (925) 313-2364
cc:	L. Mangabay, Finance L. Chavez, Environmental Services Jeff Valeros

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: May 24, 2016
David Twa,

BY:	, Deputy

RECOMMENDATION(S):

APPROVE the Marsh Creek Gap Closure Project (Project) and AUTHORIZE the Chief Engineer, or designee, to advertise the Project, Oakley area. [County Project No. 7521-6D8465, DCD-CP# 16-14] (District III).


DETERMINE the Project is a California Environmental Quality Act (CEQA), Class 4(c) Categorical Exemption, pursuant to Article 19, Section 15304(c) of the CEQA Guidelines, and

RECOMMENDATION(S): (CONT'D)

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

AUTHORIZE the Chief Engineer to arrange for payment of a $25 fee to Conservation and Development for processing, and a $50 fee to the County Clerk for filing the Notice of Exemption.

FISCAL IMPACT:

100% Flood Control Zone 1 Fund (Fund 252100).

BACKGROUND:

The purpose of this project is to address the need for additional flood capacity at the Parklands Subdivision in the City of Oakley. Based on a hydrology model for Marsh Creek, there are flood protection deficiencies at this subdivision. Two gaps exist in the 3-foot floodwalls at the end of Arches Court and Crater Lake Court that would allow floodwaters from a 100-year storm to enter the subdivision. These gaps were left to create Emergency Vehicle Access (EVA) points from East Bay Regional Park District’s (EBRPD) Marsh Creek Regional Trail, which runs parallel to Marsh Creek and the subdivision, but due to site constrictions, they cannot function as intended. The project consists of removing the gates at the two EVA access points and installing hydroseeded earthen berms in order to address the flood capacity issues at these locations.

CONSEQUENCE OF NEGATIVE ACTION:

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