HomeMy WebLinkAboutMINUTES - 03111997 - C12 4 _
TO: BOARD OF SUPERVISORS, AS THE GOVERNING BODY OF THE CONTRA COSTA
COUNTY FLOOD CONTROL AND WATER CONSERVATION DISTRICT
FROM: J. MICHAEL WALFORD, CHIEF ENGINEER
DATE: March 11, 1997
SUBJECT: Approve Consulting Service Agreement with Subsurface Consultants, Inc. Regarding
Geotechnical Investigation for the San Ramon Creek Improvement Project, Alamo area.
Project No: 7520-6138562
SPECIFIC REQUEST(S)OR RECOMMENDATION(S)&BACKGROUND AND JUSTIFICATION
I. Recommended Action:
APPROVE and AUTHORIZE the Chief Engineer to execute the Consulting Services Agreement
with Subsurface Consultants, Inc. to conduct a geotechnical investigation of the project site and
provide recommendations for the above-referenced project.
ll. Financial lmpact:
The estimated contract cost is $30,000 funded by Flood Control Zone 3B funds.
III. Reasons for Recommendations and Background:
San Ramon Creek, between Chaney Road and Livorna Road, is an unimproved natural channel.
The proposed project will consist of widening the channel and constructing bank protection
measures to reduce the risk of flooding to the adjacent neighborhood and protect the channel
banks from erosion. The proposed bank protection measures will consist of a concrete drop
structure, a concrete bank energy dissipator wall, a rectangular concrete channel, rock slope
protection and rock-filled gabion baskets.
The services of a consultant are needed to provide field investigations, laboratory tests, and
conclusions and recommendations regarding soils characteristics related to the construction of
the proposed bank protection measures. Subsurface Consultants, Inc. was selected from a group
of several firms solicited to provide these services.
Continued on Attachment: XSIGNATURE: C'-H 4�;
RECOMMENDATION OF COUNTY ADMINISTRATOR
_RECOMMENDATION OF BOARD COMMITTEE
—APPROVE _OTHER
SIGNATURE(S):
ACTION OF BOARD ON 7)an d, //� /777 APPROVED AS,RECOMMENDED ✓ OTHER
VOCE OF SUPERVISORS
f UNANIMOUS (ABSENT )
AYES: NOES:
ABSENT: ABSTAIN:
ii hereby Cert(y that this Is a true and correct Copy of
tte action taken and entered nn the minutes of the
Board of Supervo Mon :!:oam.
ATTESTED: ti-
JO:jlg PHIL SA CHELOR,Clerk of the board
g:\design\bo\bomar11.13 of Supervisors and County Administrator
Contact: Joe Olsen(313-2284)
Orig.Div: Public Works(Design Division) +
cc: Auditor Controller
E.Kuevor,CAO
P.W.Accounting
Approve Consulting Service Agreement with Subsurface Consultants, Inc. Regarding Geotechnical
Investigation for the San Ramon Creek Improvement Project
Page 2
March 11, 1997
IV. Consequences of Negative Action:
If the Consulting Services Agreement is not approved, design of the project cannot be completed
and the project would not be constructed.