HomeMy WebLinkAbout09/02/2008, C3 - STORM DRAIN IMPROVEMENTS - ALMOND STREET, SPECIFICATION NUMBER 90822 counat D� 09/02/08
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CITY O F SAN LUIS OBISPO
FROM: Jay D. Walter, Director of Public Works
Prepared By: Matt Horn, Supervising Civil Engineer
SUBJECT: STORM DRAIN IMPROVEMENTS — ALMOND STREET,
SPECIFICATION NUMBER 90822
CAO RECOMMENDATION
1. Approve the plans and specifications for Storm Drain Improvements — Almond Street,
Specification Number 90822.
2. Authorize Staff to advertise for bids and authorize the City Administrative Officer to award
the contract if the lowest responsible bid is within the Engineer's Estimate of$142,570.
DISCUSSION
Background
A large portion of the City's storm sewer pipeline infrastructure is comprised of corrugated metal
pipe (CMP). In the 1970's and 1980's CMP was the industry standard due to its inexpensive
material cost and ease of installation. Since then, CMP has proven to have a design life of 20 to 30
years. CMP typically fails by friction, corrosion or both. Once the integrity of the pipe has been
compromised, the pipe's surrounding soil becomes susceptible to piping(soil picked up by flowing
water and carried away)and the pipe will eventually collapse.
With the adoption of the 2007-09 Financial Plan the City has implemented a program to remove
existing CMP facilities and replace them with new storm drain pipes. At the current funding level
with the estimated number of CMP facilities in the City's inventory, Staff estimates that it will take
about 30 years to replace all these CMP facilities with new storm drain pipe.
Current Project
In December 2007 Staff was made aware of a sink hole that had developed between 246 and 248
Almond Street. Staff investigated the sink hole and discovered a failing CMP storm drain system
in the near vicinity, extending from the street area to the creek, adjacent to two homes.
Staff solicited a proposal from a consultant to prepare plans and specifications for this work. The
Wallace Group submitted a proposal that was appropriate in both scope and cost and a purchase
order was award.
The Wallace Group has now completed the plans and specifications and this project will replace
approximately 400 feet of corrugated metal pipe (CMP) and install approximately 100 feet of
plastic pipe liner. The CMP that will be replaced with this project is located under roadway
sections of Almond Street and Almond Alley. The portion of CMP to be lined resides inside an
easement between 246 and 248 Almond Street. Lining this section of CMP will minimize this
STORM DRAIN IMPROVEMENTS—ALMOND STREET Page 2
project's impact to the surrounding private property and at the same time achieve the project's goals
of stabilizing this storm drain facility.
CONCURRENCES
The Community Development Department has reviewed this project and has prepared a Categorical
Exemption for compliance with the California Environmental Quality Act.
FISCAL IMPACT
The 2007-09 Financial Plan, Appendix B, pages 3-293 through 3-296, identifies in the 2007-09
fiscal years $12,400 for environmental review, $60,000 for design, $1,230,000 for construction
and $60,000 for construction management services in a master account to support this and other
CMP replacement projects
Phase �� 2007-08 FYI 2008-09 FYI , Phase Total
Environmental Review $6,200 _$6,200 $12,400
Design _ $30,000 $30,000 $60,000
Construction $600,000 $630,000 $1,230,000
Construction Management �j $30,000 $30,000 $60,000
Fiscal Year Total $666,200.00 $696,200.00
Below is a list of CMP projects that have been recently completed, are advertising for bidders, or
are currently being designed and are anticipated to use 2007-08 fiscal year master account
funding. Project design work for 2008-09 will begin this fall for spring 2009 construction.
Project T Status F Estimated Construction Costs
Mission CMP _ _ Complete�Y $85,000
San Luis Drive CMP Construction $22,000
*Almond Street CMP Advertising $168,000
Mission Lane CMP _ Design $150,000
Kentucky at Stafford _v Design $30,000
fliguera.CMP _ DesignJ $75,000
Totalf $530,000
* Indicates this project as being the subject of this staff report and project status indicates
approval of the City Administrative Officer's recommendations.
It has not been determined at this time if Construction Management funds will be needed for this
project.
The Storm Drain Improvement—Almond Street estimated funding needs are as follows:
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STORM DRAIN IMPROVEMENTS—ALMOND STREET Page 3
Specification No. 90822 Budget
Construction: $142,570
Construction Contingencies: $22,430
Total for Construction: $165,000
Prmtulg. $500
Materials Testing: $2,500
Total for other costs: $3,000
Total Cost of Project $1689000
2007-08 Carryover $ 459,554
2008-09 Budget $ 630,000
Available Funding $ 11089,554
Currently there is $1,089,554 available in the construction phase of the master account to support
this request of$168,000. At the time of contract award, a Budget Amendment Request will be
generated to transfer funding from the CMP Replacement master account to the this project
account.
Relationship to Short-Term Actions in Fiscal Heath Contingency Plan
The City's Fiscal Health Contingency Plan was recently activated and as a result all CIP projects
are currently under review for possible deferral or deletion. A report is planned for Council review
in September 2008 that will identify and recommend project deferrals and deletions. While this
review is underway and not yet completed, staff recommends going forward with bidding for this
project at this time for the following reasons:
1. This is a maintenance-related project. Delay or deferral of the project could cause road failures
and private property damage. As such, this project may be an unlikely candidate for CIP
deletion or deferral.
2. Plans and specifications have already been prepared and the project is ready to advertise for
bids. The current economic climate is favorable for construction bidding, therefore staff
recommends capitalizing on this investment.
ATTACHMENT
Vicinity Map
AVAILABLE FOR REVIEW IN THE COUNCIL OFFICE
Plans and Specifications
G:\Staff-Reports-Agendas-Minutes\_CAR\2008\CIP\90822 Almond CMP\90822 Adv.doc
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