HomeMy WebLinkAbout07/07/2009, C8 - POLYBUTYLENE SERVICES REPLACEMENT PROJECT 2, SPECIFICATION NO. 90898 Counat "-July 7,2009
j acEnoa Repout �N
CITY OF SAN LUIS OBISPO
FROM: Jay D. Walter, Director of Public Works
Prepared By: Sergio Reyes, Engineering Tecluiician III
SUBJECT: POLYBUTYLENE SERVICES REPLACEMENT PROJECT 2,
SPECIFICATION NO.90898
RECOMMENDATION
1. Approve plans and specifications for the "Polybutylene Services Replacement Project 2,
Spec. No. 90898".
2. Authorize staff to advertise for bids and authorize the City Manager to award the contract if
the lowest responsible bid is within the Engineer's Estimate of$633,645.
DISCUSSION
Background
Polybutylene plastic water pipe first 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 using this type of piping system began to occur. The pipe lines had
become brittle and were deteriorating much more quickly than had been anticipated. Although the
City no longer allows the use of this material in new installations, 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 290 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.
� I
Polybutylene Services Replacement Project Page 2
FISCAL IMPACT
This project was included 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
Polybutylene Master Account, Specification No. 90063. With the addition of carryover funding,
there is currently $359,303 available in the Master account. On July 1, 2009, an additional
$350,000 will be appropriated to the Master Account for the 2009-10 fiscal year, making the
grand total of$709,303. At time of contract award, there will be sufficient funding to support
this project request. A budget amendment request will be processed at time of contract award to
transfer funding from the Master account to the Polybutylene Services Replacement project
account.
Cost Detail:
Project Budget
Construction: $633,645
Construction Contingencies: $63,364
Total for Construction: $697,009
Printing: $500
Materials Testing: $6,000
Total for other costs: $6,500
Total Cost of Project $7039509
Available Funding
Master Polybutylene Replacement Acct $709,303
ATTACHMENT
Pavement Area 3 Vicinity Map
AVAILABLE FOR REVIEW IN THE COUNCIL OFFICE
Special Provisions
G:\Staff-Reports-Agendas-Minutes\-CAR\2009\QP\90898 Polybutylene Project 2\90898 CAR adv.doc Q��
1 � I
ATTACHMENT
i
V.
1
o `�-------; Area Z
i
Area 3
------- ----
Area 5 -` _ _ ---------- _ --------
i
i
-----------
---------------�
Legend
— —citylim@
—StreetOutlines
PavementManagement
ID
zPavin Area Map3 9
05 C$-3
�6
9