HomeMy WebLinkAbout12/02/2008, C1 - POLYBUTYLENE SERVICES REPLACEMENT PROJECT, SPECIFICATION NO. 90871 council M ti ff 3ec. 2,2008
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CITY OF SAN LUIS OBISPO
FROM: Jay D. Walter, Director of Public Works 9VW
Prepared By: Sergio Reyes, Engineering Technician III --.
SUBJECT: POLYBUTYLENE SERVICES REPLACEMENT PROJECT,
SPECIFICATION NO.90871
RECOMMENDATION
1. Approve plans and specifications for the "Polybutylene Services Replacement Project, Spec.
No. 90871".
2. Authorize staff to advertise for bids and authorize the City Manager award the contract if the
lowest responsible bid is within the engineer's estimate of$641,870.
DISCUSSION
Polybutylene plastic water pipe came into use in the 1970s and the City of San Luis Obispo, along
with many other agencies, used the material for its water service systems. However, by the mid
1980s service failures in the piping system began to occur. The pipe lines had become brittle and
were failing. Although the City no longer allows the use of this material, an estimated 4,000
polybutylene water service lines were installed during the referenced time period.
In order to systematically address the problem, the City has established an annual replacement
program that is scheduled to last approximately two more years. Each year the City's water supply
system is researched to determine which services are in need of immediate replacement.
Funding for the polybutylene water service replacement program is allocated on an annual basis.
The level of funding is appropriate to allow for a cost-effective and productive project size. Past
experience has demonstrated that multiple smaller projects result in higher cost per service. The
proposed project will replace approximately 225 polybutylene services, the vast majority of which
are located in Paving Area 3 (Attachment 1).
CONCURRENCES
The Community Development Department has given this project a Categorical Exemption.
FISCAL IMPACT
This project was budgeted for in the 2007-2009 Financial Plan, Appendix B, pages 3-96 through
3-98. Funds in the amount of $350,000 have been allocated in the 2008-09 fiscal year to the
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Polybutylene Services Replacement Spec No. 90871 Page 2
Polybutylene Master Account, Specification No. 90063. With the addition of carryover funding,
there is currently $811,000 available in the Master account to support this project. A budget
amendment request will be processed at time of contract award.
Cost Detail:
Project Budget 2008-09 FY
Construction: $641,870
Construction Contingencies: $98,000
Total for Construction: $739,870
Printing: $500
Materials Testing: $5,500
Total for other costs: $6,000
Total Cost of Project $7459870
Available Funding
Master Polybutylene RplcmntAcct $811,000
ATTACHMENT
Pavement Area 3 Vicinity Map
AVAILABLE IN THE COUNCIL READING FILE
Plans and Special Provisions
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Legend Attachment 1
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