HomeMy WebLinkAbout08/15/2006, C3 - CONTRACT ADMENDMENT NO. 2 FOR TANK FARM GRAVITY SEWER, LIFT STATION AND FORCE MAIN DESIGN SERVICES counClt M..uMAug.u15,2006
ac Enna Report 6 5
C I TY OF SAN LUIS OBISPO
FROM- John Moss, Utilities Director
Prepared By: David Hix,Wastewater Division Manager
SUBJECT: CONTRACT ADMENDMENT No. 2 FOR TANK FARM GRAVITY SEWER,
LIFT STATION AND FORCE MAIN DESIGN SERVICES
CAO RECOMMENDATION
Approve Amendment No. 2 of the agreement with Brown and Caldwell Engineers for additional
design, survey and geotechnical services for Tank Farm Lift Gravity Sewer, Lift Station and Force
Main project, specification No. 99703,in the amount of$87,600 and authorize the Mayor to execute
the Amendment.
DISCUSSION
The Tank Farm Gravity Sewer, Lift Station and Force Main project will require additional design,
survey and geotechnical services because of the realignment of the gravity sewer along Tank Farm
Road. The realignment will require the purchasing of easements which subsequently require further
geotechnical work and detailed surveys for legal and boundary descriptions. Easements became
necessary when it was determined that the Tank Farm Gravity Sewer could not be placed in the
roadway because traffic impacts could not be mitigated during the sewer's construction. Redesign
for revised depths of the sewer and changes to pump capacity were requested by City staff to
simplify construction and to accommodate unanticipated increased flows from Airport Area
properties.
This design, survey and geotechnical work is critical to the project which will replace two aging and
overcapacity lift stations and will serve significant portions of the Margarita and Airport annexation
areas and the entire Orcutt annexation area. 90% of the design drawings and documents have been
completed for the project. Construction is anticipated to begin in spring of 2007.
FISCAL I IPACT
The cost of this contract amendment is $87,600. Funding for design services for this project were
approved as part of 2003-05 Financial Plan, Appendix B, pgs 94-96. Funding for these additional
services were approved in the 2005-07 Financial Plan Supplement; 2006-07 Budget,pgs E-11-E-14.
Account ••• •
Tank Farm Gravity Lift Station $614,916 $87,600 $702;516
Design/Engineering
520.58900.99703.58909703.90552
Council Agenda Report—Contract Amendment for Tank Farm Design Services
Page 2
ATTACHMENTS
1. Amendment to Agreement No. 2
Electronic File Path: dhix on`chstore2'(H:)\TankFarmLift\B&CamendNo2.CAR
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Attachment 7
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AMENDMENT TO AGREEMENT NO I
THIS AMENDMENT TO AGREEMENT is made and entered in the City of San Luis Obispo on
, by and between the CITY OF SAN LUIS OBISPO, a municipal corporation, herein after
referred to as City,and Brown and Caldwell Engineers,Inc.,hereinafter referred to as Contractor.
WITNESSETH:
WHEREAS, on September 11, 2003, the City entered into an Agreement with Contractor for Design
Services for the Tank Farm Gravity Sewer,Lift Station and Forcemain;and
WHEREAS, the City desires to amend the scope of services to include further design, survey and
geotechnical work and Contractor has submitted a proposal for this purpose that is acceptable to the City.
NOW THEREFORE, in consideration of their mutual promises, obligations and covenants hereinafter
contained,the parties hereto agree as follows:
1. The scope of services and related compensation is hereby amended as set forth in Exhibit A
attached hereto.
2. All other terms and conditions of the Agreement remain in full force and effect.
IN WITNESS WHEREOF, the parties hereto have caused this instrument to be executed the day and year
first written above.
ATTEST: CITY OF SAN LUIS OBISPO
By:
Audrey Hooper,City Clerk David F. Romero,Mayor
APPROVED AS TO FORM: CONTRACTOR
i
By:
iAAttomey
Exhibit A
f 1
Suite 100,400 Exchange
Irvine,California 92602
Tel:(714)730-7600
Fax:(714)734-0940
July 14,2006
B . Ot Mr. David Hix
City of San Luis Obispo
Wastewater Division Manager
25 Prado Road
San Luis Obispo,California 93401 1012/071001-003-03
Subject: Addendum No. 2 Tank Farm Gravity Sewer, Lift Station and Forcemain,
Design Services Spec. No. 99703.90552
Dear Mr. Hix
As requested, we have prepared an estimate for providing the additional services that
resulted due to changes in lift station design flows,and additional geotechnical
services. We are requesting a revision to our contract to include the following
additional services.
1. Changes in Lift Station Design Flows—At City's request,design
flow for the Tank Farm Lift Station was revised due to changes to
Airport Annexation Land Use and Orcutt Area Annexation Land
Use.
2. Additional Geotechnical Services—Additional geotechnical
services are required due to changes in our scope of work (addition
of Prado Road Extension) and changes in pipeline alignment for
Business Park and Tank Farm Road.These services will be provided
by our geotechnical sub consultant,Furgo West.
3. Changes Due to County Lift Station—In order to reduce the
project construction cost, the City decided not to consolidate'County
Lift Station with the Tank Farm Lift Station.This change reduced the
depth of gravity line and lift station wet well.The structural and
mechanical drawings were revised to incorporate this change.
4. Boundary and Legal Descriptions along Tank Farm Road -
Cannon Associates will assist the City in the acquisition of permanent
pipeline and temporary construction easements for the project by
preparing Legal Descriptions and Exhibits.
1):\_Prorynals\071001...\Wl'\103744)an Luis obisrinTmk Fmn Adden 2 Rcviscd.dnc y
Exhibit A
Mr. David Hix
July 14, 2006
Page 2
The additional cost for the above items is $87,514. For the breakdown of this cost,
please refer to the Table A attached.
We would be pleased to discuss this estimate with you at your convenience. Please
call me if you have any questions at (714) 689-4817.
Very truly yours,
BROWN AND CALDWELL
Azee Malik
Project Manager
Attachments: Schedule
Table A
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