HomeMy WebLinkAbout04/17/2007, C5 - POLYBUTYLENE SERVICE REPLACEMENT PROJECT SPEC. NO. 90660 council Mw6,D� 11.61
j acEnaa Report I=N
CITY OF SAN LUIS O B I S P O
FROM: Jay Walter, Public Works Director
Prepared By: Sergio Reyes, Engineering Technician
SUBJECT: POLYBUTYLENE SERVICE REPLACEMENT PROJECT SPEC. NO. 90660
CAO RECOMMENDATION
1. Approve plans and specifications for the "Polybutylene Service Replacement Project
Spec. No. 90660".
2. Authorize staff to advertise for bids and authorize the CAO to award the contract if the
lowest responsible bid is within the engineer's estimate of$506,728.
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 as a result. 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 189 polybutylene services, the vast majority of which are located in
Paving Area 4.
CONCURRENCES
The Community Development Department has given this project a Categorical Exemption.
FISCAL IMPACT
This project was budgeted for in the 2005-2007 Financial Plan, Appendix B, page 85-87.
Funding in the amount of $527,200 is currently available in the Polybutylene Replacement
project account to support this project.
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Report Title Page 2
Cost Detail:
Construction: 457;480
Construction Contingencies: 45,748
Total for Construction: $503,228
Printing: 500
Materials Testing: 3,000
Total for other costs: $3,500
Total Cost of Project $506,728
ATTACHMENTS
Plans and Specifications
AVAILABLE FOR REVIEW IN THE COUNCIL OFFICE
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