HomeMy WebLinkAbout04-02-2019 Item 10 - Stafford-Kentucky Sewer Line Replacement Project
Department Name: Public Works
Cost Center: 6102
For Agenda of: April 2, 2019
Placement: Consent
Estimated Time: N/A
FROM: Daryl Grigsby, Public Works Director
Prepared By: Hai Nguyen, Engineer III
SUBJECT: ADVERTISE THE STAFFORD/KENTUCKY SEWER LINE REPLACEMENT
PROJECT, SPECIFICATION NO. 91265
RECOMMENDATION
1. Approve the project plans (Attachment A) and specifications (Attachment B) for the
Stafford/Kentucky Sewer Line Replacement Project, Specification Number 91265; and
2. Authorize staff to advertise the Project for bids; and
3. Authorize the City Manager to award the construction contract if the lowest responsible bid
is within the publicly disclosed funding amount of $768,000; and
4. Approve the transfer of $250,000 from the Sewer Fund Undesignated Capital account to the
project account.
DISCUSSION
Background
Replacement of aging, deteriorating, or deficient wastewater collection pipelines is part of an
ongoing sewer infrastructure maintenance program. This program has several objectives,
including, provide uninterrupted sewage flow, eliminate potential health hazards and/or effluent
leakage, reduced need for emergency repairs and reduced maintenance. Furthermore, repairing
defective components of the City’s wastewater collection systems will reduce the
infiltration/inflow of groundwater and surface runoff into the collection system thereby reducing
operational costs and the potential for overflows.
In the past ten years, the City prioritized the replacement of sewer lines crossing the Union
Pacific Railroad tracks due to pipe age, condition, and ramifications of pipe failure. The
Stafford/Kentucky Sewer Line Replacement Project (Project), including the additive alternate,
proposes replacement or lining of approximately 2,200 feet of sewer main. The sewer main
crossing under the railroad tracks near the intersection of California and Taft streets was installed
sometime between 1910 and 1927, is made of cast iron and terra cotta pipe, and has operated
beyond its useful life. Other sewer mains included in the Project are made of terra cotta or
vitrified clay pipe and have severe root intrusion at the pipe joints requiring regular maintenance
every four months.
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This Project is structured to request bidders provide a base bid as well as a bid for one additive
alternate. The base bid work is planned for an easement area adjacent to Taft Street and the
Union Pacific Railroad. The additive alternate locations are planned for segments of Taft,
Stafford and Kentucky streets (Attachment C).
Base Bid
The Base Bid portion of the Project includes installation of approximately 100 lineal feet of
sewer line by “jack and bore” construction, 276 lineal feet of sewer line by open trenching and
341 lineal feet of sewer line by pipe bursting. Pipe bursting installs a sewer pipe inside the
existing sewer pipe resulting in a new sewer pipe of the same or greater size than the prior sewer
pipe size. This Project will result in lower maintenance costs and reduced customer impacts due
to any necessary emergency repairs.
Additive Alternative A
Additive Alternative A includes installation of approximately 1,490 feet of cure-in-place pipe
(CIPP) polyester lining. CIPP is a trenchless rehabilitation method used to repair and extend the
useful life of pipes. CIPP lining of the existing pipe will result in a reduced construction
timeframe as compared to traditional open trench construction and is less disruptive to the
community.
Previous Council or Advisory Body Action
This project is identified in the City Council approved 2013-15 Financial Plan, Capital
Improvement Plan. Project construction has been delayed until now due to availability of staffing
to finalize construction documents.
Policy Context
The City Council approved the Wastewater Collection System Infrastructure Renewal Strategy in
January 2016. The plan identified a strategy for prioritizing pipeline replacement in the
wastewater collection system to serve existing customers and future development in the City.
Per the October 2018 Financial Management Manual, Council approval is required for Public
Projects that cost over $175,000.
Public Engagement
Public engagement was done during the initial identification of this project to be included in the
2013-15 Financial Plan and again during preparation of the construction documents. Residents
that will be affected from construction operations will be notified of the upcoming work to
reduce adverse impacts.
CONCURRENCE
There is concurrence from the Utilities Department of the project need based on conditions of
existing infrastructure and upon the review of the Project plans and special provisions.
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ENVIRONMENTAL REVIEW
This project is categorically exempt from environmental review pursuant to section 15301 of the
CEQA Guidelines (Existing Facilities) since it is a maintenance and replacement project. A
Notice of Exemption has been filed through the Community Development Department.
FISCAL IMPACT
Budgeted: Yes Budget Year: 2011-13 & 2013-15
Funding Identified: Yes
Fiscal Analysis:
Funding Sources Current FY Cost
Annualized
On-going Cost
Total Project
Cost
General Fund
State
Federal
Fees
Sewer Fund $856,294
Total $856,294
Estimated Project Cost by Funding Sources
Base Bid Estimate $565,000
Add Alt A Estimate $203,000
Total Project Estimate:$768,000
Contingencies (10%):$77,794
Material Testing:$10,000
Printing:$500
Total for Project $856,294
Project Budget (91265)$606,294
Supplemental Funds (602.9501.71501)$250,000
Total Funding Available $856,294
Consruction Management, Total Contingencies,
Material Testing, Printing Costs $88,294
Publically Disclosed Funding Amount $768,000
Stafford / Kentucky Sewerline Replacement Project (91265)
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This project is identified in the 2013-15 Financial Plan page 3-161. The project is structured with
a Base Bid and one Additive Alternative to maximize the scope of work within available
funding. The strategy is to award the contract with the Base Bid and Additive Alternative A as
funding will allow, up to the Publicly Disclosed Funding amount of $768,000 in compliance with
Public Contract Code Section 20103.8(c). Funding for this project is available in the project
account (91265) which has a current available balance of $606,294. Staff is recommending that
additional funding of $250,000 be transferred from the Sewer Fund Undesignated Capital
account to provide sufficient funding for the project. Undesignated Capital has a current balance
of $208,469. An additional $41,531 is expected to become available in the Undesignated Capital
account after completion of the Telemetry Upgrade Project (project 91370). Funding will
become available in April, 2019 prior to the start of construction scheduled for July, 2019.
ALTERNATIVES
Deny authorization to advertise. The City Council may choose not to authorize project
advertisement. Staff does not recommend this alternative. Further delay of rehabilitating these
segments of wastewater collection sewer pipe will only increase the costs associated with the
maintenance, emergency repair after complete failure, and construction phase of work.
Attachments:
a - Council Reading File - 91265 Plans
b - Council Reading File - 91265 Specifications
c - Project Vicinity Map
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STAFFORD / KENTUCKY
SEWERLINE REPLACEMENT
PROJECT 1 OF 1
0
SCALE IN FEET
800
PROJECT
LOCATION
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