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C. 13

To:	Contra Costa County Flood Control District Board of Supervisors
From:	Brian M. Balbas, Public Works Director/Chief Engineer
Date:	December 8, 2020

Contra

Costa

County

Subject:

Contract Amendment with Environmental Science Associates, Martinez Area. Project No. 7520-6B8285

APPROVE	OTHER
RECOMMENDATION OF CNTY ADMINISTRATOR	RECOMMENDATION OF BOARD COMMITTEE

Action of Board On: 12/08/2020

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:	Paul Detjens, (925) 313-2394
cc:	Allison Knapp, Deputy Chief Engineer Tim Jensen, Flood Control Paul Detjens, Flood Control Beth Balita, Finance Patrick Melgar, Flood Control Catherine Windham, Flood Control

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: December 8, 2020
David Twa,

BY:	, Deputy

RECOMMENDATION(S):

APPROVE and AUTHORIZE the Chief Engineer, Contra Costa County Flood Control and Water Conservation District (FC District), or designee, to execute a contract amendment with Environmental Science Associates (Contractor), effective November 17, 2020, to increase the payment limit by $300,000 to a new payment limit of $1,950,000, to continue providing services to the FC District in connection with the Lower Walnut Creek (LWC) Restoration Project, and to extend the termination date from January 31, 2021 to January 31, 2022, Martinez area.

FISCAL IMPACT:

This phase of the project is funded by a combination of Flood Control Zone 3B (Walnut Creek watershed) funds and grant funds from the Environmental Protection Agency (EPA) and the California Department of Fish and Wildlife (CDFW). (51% Flood Control District Zone 3B Funds, 32.5% CDFW Proposition 1 Grant Funds, and 16.5% EPA San Francisco Bay Water Quality Improvement Funds)

BACKGROUND:

The LWC Restoration Project proposes to restore and enhance up to approximately 200 acres of tidal wetlands and associated habitat along 3 miles of the most downstream portion of Walnut Creek and its tributary Pacheco Creek, near the southern shore of Suisun Bay. The Project goals are to provide ecosystem benefits, sustainable flood protection, and opportunities for future public access through the Project area.

The Contractor has been assisting the FC District with environmental compliance, regulatory permitting, and design of the LWC project. Regulatory permitting has been especially challenging, and efforts to secure the seven needed regulatory permits have taken much longer and have required a much larger effort than originally anticipated. Additional geotechnical complexities in the design have also necessitated additional contractor effort. These additional efforts require an amendment to the original contract.

CONSEQUENCE OF NEGATIVE ACTION:

Without the approval of this agreement by the Board of Supervisors, the FC District will not be able to complete its design, permitting, and CEQA services phase of the LWC Restoration Project.