HomeMy WebLinkAboutAgenda Report - October 15, 2014 C-04AGENDA ITEM C'4
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AGENDA TITLE:
MEETING DATE:
PREPARED BY:
Approve Plans and Specifications and Authorize Advertisement for Bids for
Lodi Lake Storm Drain Outfall lmprovement Project
October 15,2014
Public Works Director
RECOMMENDED ACTION: Approve plans and specifications and authorize advertisement for
bids for Lodi Lake Storm Drain Outfall lmprovement Project.
BACKGROUND INFORMATION: This project consists of replacing the existing storm drain outfall pipe
and constructing a new concrete outfall structure for the Lodi Lake
storm drain pump station, as presented in Exhibit A. The
improvements include trenching; installation of a S4-inch diameter storm drain pipe and concrete outfall
structure; and other incidental and related work, all as shown on the plans and specifications for the project.
The existing Lodi Lake storm drain pump station outfall system consists of approximately 860 linear feet
of S4-inch diameter concrete pipe and 54 linear feet of 66-inch diameter corrugated metal pipe (CMP).
The 66-inch CMP is the last part of the outfall pipe system and is usually submerged when Lodi Lake is
filled. Because of the wet condition, it has severely corroded and the outfall was temporarily repaired as
shown in Exhibit B. The CMP was installed in 1985 and has reached the end of its service life. Staff
recommends replacing the 66-inch CMP with a S4-inch reinforced concrete pipe (RCP). A concrete
outfall structure will be installed to prevent corrosion at the discharge end of the pipe.
The new pipe will match the rest of the existing S4-inch RCP and is expected to last more than 70 years.
Because the project will need to be completed when Lodi Lake is empty and the pipe is exposed, staff
will coordinate with Woodbridge lrrigation District to have the pipe constructed in the period between
February 1 and February 26,2015, when the lake is drained.
The plans and specifications are on file in the Public Works Department. The planned bid opening date
is November 20,2014. The project estimate is $86,000.
FISCAL IMPACT: The new pipe and outfall will decrease the on-going maintenance of the
Lodi Lake storm drain system.
FUNDING AVAILABLE: Funding will be identified at project award.
F. Wally ndelin
Public Works Director
Prepared by Lyman Chang/Senior Civil Engineer
FWS/LC/pmf
Attachments
cc: City Engineer/Deputy Public Works Director
Senior Civil Engineer Chang
APPROVED Cjå-,.$-^^, A¡1l/"'(-
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Stephèn Schwabauer, Cf{y Manager
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