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TO: BOARD OF SUPERVISORS, AS GOVERNING �� ` Contra
BOARD OF THE FLOOD CONTROL & WATER C Osta
CONSERVATION DISTRICT �7
FROM: JULIA R. BUEREN, CHIEF ENGINEER �o4�
s�q EOUty'� ~ County
DATE: September 16, 2008
SUBJECT: APPROVE and AUTHORIZE the Chief Engineer, or designee, to execute a contract with GEI
Consultants Inc.,and AUTHORIZE the Chief Engineer,or designee,to transfer$300,000 from Zone 1
(Fund 252 100)to Drainage Area 104(Fund 258900),Antioch area. (Flood Control Zone I Funds and
Drainage Area 104 Funds) (Districts 111 and V). Project No. 7589-6D8518
SPECIFIC REQUEST(S)OR RECOMMENDATION(S)&BACKGROUND AND JUSTIFICATION
RECOMMENDED ACTION:
APPROVE and AUTHORIZE the Chief Engineer,or designee,to execute a contract with GEI Consultants,Inc.,in
the amount of$901,287.00 for geotechnical consulting services for the Upper Sand Creek Detention Basin Project
for the period beginning September 1, 2008, through January 10, 2011. AUTHORIZE the Chief Engineer, or
designee, to transfer $300,000 from Zone 1 (Fund 252 100) to Drainage Area (DA) 104 (Fund 258900), Antioch
area.
FINANCIAL IMPACT:
There is no impact to the County General Fund. This project is funded by Developer Impact Fees for new
construction within DA 104 and ad valorem tax revenue for Flood Control Zone 1.
CONTINUED ON ATTACHMENT: E SIGNATURE'
RECOMMENDATION OF COUNTY ADMINISTRATOR COMMENDATIO F BOARD TEE
APPROVE OTHER
SIGNATURE(S):
ACTION OF BOARD ONPROVED A E
J�PCOMMENDED OTHER .
VOTE SUPERVISORS: I HEREBY CERTIFY THATTHIS IS A TRUEANDCORRECT
COPY OF AN ACTION TAKEN AND ENTERED ON
UNANIMOUS(ABSENT A)C/ ) MINUTES OF THE BOARD OF SUPERVISORS ON THE
AYES: NOES: DATE SHOWN.
ABSENT: ABSTAIN:
Contact: Carl Roner(925)313-2213
CR:MH:cw /
G:\FldCtl\Board Orders 2005 Onward\2008 BO\GEI Contract BO 9-16-08.doc ATTESTED �` i
AVID TWA,CLERK OF THE BOARD OF SUPERVISORS
AND COUNTY ADMINISTRATOR
cc: Public Works:
R.M.Avalon,Deputy Chief Engineer,Flood Control
G.Connaughton,Flood Control
GEI Consultants,Inc. BY: Deputy
180 Grand Avenue,Suite 1410
Oakland,CA 94612
r
SUBJECT: APPROVE and AUTHORIZE the Chief Engineer, or designee, to execute a contract with GEI
Consultants Inc., and AUTHORIZE the Chief Engineer, or designee,to transfer$300,000 from
Zone 1 (Fund 252100)to Drainage Area 104(Fund 258900),Antioch area.(Flood Control Zone
1 Funds and Drainage Area 104 Funds) (Districts III and V). Project No. 7589-61)8518
DATE: September 16, 2008
PAGE: 2 of 2
REASONS FOR RECOMMENDATIONS AND BACKGROUND:
The Consulting Services Agreement for geotechnical engineering is needed to provide the Contra Costa County
Flood Control and Water Conservation District(FC District)with professional services for the analysis,design,state
regulatory coordination, and construction inspection to ensure dam stability of the future Upper Sand Creek
Detention Basin, located within the City of Antioch in the Marsh Creek Watershed. The Upper Sand Creek
Detention Basin is a primary element of the regional infrastructure included in the DA 104/Zone 1 plan and fee
structure, approved in 1992. Construction of the ultimate basin will protect downstream areas of Antioch,
Brentwood, and Oakley from flooding, as well as mitigate the impact of development in Eastern Contra Costa
County. A detailed study and report on site geology, dam foundation design and construction are required by the
State Department of Water Resources Division of Safety of Dams. The engineering capabilities required to
investigate the site, to prepare plans, specifications, and cost estimates for contract advertising, and to inspect the
construction work is beyond the capability of the FC District staff.
In June of 1992,the Board approved the EIR for the Marsh Creek Watershed Regional Drainage Plan,of which the
Upper Sand Creek Basin is a component, in compliance with CEQA.
CONSEQUENCES OF NEGATIVE ACTION:
Without Board of Supervisors' approval,the primary flood protection infrastructure planned for the Marsh Creek
Watershed will be delayed. In addition,the significant time and resources expended by staff to outreach to qualified
consulting firms, conduct the consultant selection process, and coordinate the contract details would be lost.