HomeMy WebLinkAbout08/16/2005, C2 - POLYBUTYLENE SERVICE REPLACEMENT SPEC. NO. 90526 counat M
August 16,2005
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CITY OF SAN LUIS OBIS�� PO
FROM: Jay Walter, Public Works Directorq YW
Prepared By: Sergio Reyes Engineering Technician
SUBJECT: POLYBUTYLENE SERVICE REPLACEMENT SPEC. NO. 90526 .
CAO RECOMMENDATION
1. Approve plans and specifications for "POLYBUTYLENE SERVICE REPLACEMENT
SPEC.NO. 90526:'
2. Authorize staff to advertise for bids and authorize the CAO to award the contract if the
lowest responsible bid is within the Project Budget.
DISCUSSION
Polybutylene plastic water pipe came into use in the 1970's. The City and many other agencies
allowed its use for water services. By the mid 1980's service failures began occurring; The pipe
had apparently become brittle and was failing as a result. The City no longer allows the use of this
material; however, and estimated 4,000 polybutylene water services were installed during the time
it was allowed.
The water distribution maintenance staff can no longer keep up with the number of service
failures. An annual replacement program has been established and will last approximately 6
more years. Each year one area of the City will be researched to determine which services are
polybutylene and the replacements will take place. The areas are selected in coordination with
the City's.Pavement Management Program. The replacements will occur a year or so in advance
of the paving for that area.
Funding for polybutylene water service replacements occurs on an annual basis. Due to the time
it takes to research water service materials, produce the bid documents, and construct each
project, the funding has gotten out of phase with the construction. Staff expected this to occur,.
since some Pavement Management Plan areas have more polybutylene water services than
others. The level of funding is appropriate, however, resulting in projects that are generally the
right size. It has been demonstrated that smaller projects result in higher cost per service, while
larger projects put an undue burden on staff and take too long to complete.
This project replaces over 350 polybutylene services. The vast majority of the services are
located in Pavement Areas 1 & 2 with a few services in Pavement-Area 8 &9.
CONCURRENCES
The Community Development Department has determined that this project is categorically exempt
under the California Environmental Quality Act (CEQA).
Polybutylene Service Replacement Spec. No.90526
Page-2 - - ----—
FISCAL IMPACT
The Polybutylene Service Replacement Program is funded at $250,000 per year. There is currently
$142,500 in the Polybutylene Replacement account available to support this project. The account
reflects savings from previous years due to favorable bidding.
Construction: $ 503,222
Construction Contingencies: $ 50,322
Total for Constructions $ 553;544
Printing: $ 156
Materials Testing: _ $ 2;500
Total Project Budget: $556,200
ATTACHMENTS
1. Paving Map
Specifications available for review in the Council office
1:\-Council Agenda Reports\2005 agenda reports\Engineering and Maintenance Services (Lynch)\Capital Projects Design (Lynch)\90526
CAR.DOC
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ATTACHMENT 1
MAP OF
CITY PAVING
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