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AGENDA TITLE:
MEETING DATE:
PREPARED BY:
Approve Specifications and Authorize Advertisement for Bids for Granular
Activated Carbon (GAC) Replacement, Well No. 18 and No. 20
September 3,2014
Public Works Director
RECOMMENDED ACTION Approve specifications and authorize advertisement for bìds for
Granular Activated Carbon (GAC) replacement, Well No. 18 and
No. 20.
BACKGROUND INFORMATION: Granular activated carbon (GAC) is utilized at certain well sites to
adsorb dibromochloropropane (DBCP) contaminates in the drinking
water. Over time, the carbon loses its adsorptive capacity and must
be replaced. Recent test results indicate that the current GAC in the vessels at Well No. 18 and No. 20
has lost its absorptive capacity and is ready for replacement.
Well No. 18 is located at 200 West Century Boulevard, at the intersection of Church Street and
Century Boulevard. Well No. 20 is located at2126 West Kettleman Lane. Locations are graphically
shown on Exhibit A. The GAC filter systems at these locations have been in service since 2000.
Well SiteNo. lScontainsthreevesselswith23,000poundsof GACeach. Well SiteNo.20contains
three vessels with 24,000 pounds of GAC each. The total amount of GAC to be replaced is
141,000 pounds.
The specifications are on file in the Public Works Department. The project estimate is $300,000 and the
planned bid opening date is September 24,2014.
FISCAL IMPAGT:The funds for this project will be coming from the Water Utility Fund's DBCP
Operations and Maintenance account which is funded, in part, under the
terms of the DBCP settlement.
FUNDING AVAILABLE: Funding will be identified at project award
F. Wall in
Public Works Director
Prepared by Sean Nathan, Associate Civil Engineer
FWS/SN/pmf
Attachment
cc: Utilities Superintendent
APPROVED
\\CVCFILVo2\Pubwks$\WP\PROJECTS\WATER\GAC1820\2014Replacement\CSpecs.doc
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Well #18
Well #20
C.C.T. RailroadUnion Pacific RailroadC.C.T. Railroad
Union
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Hwy. 99Ham Ln.Harney Ln.Mills Av.Hutchins St.Elm St.Lower Sacramento Rd.Cherokee Ln.Lodi Av.
HWY 12 Church St.Lockeford St.
Kettleman Ln.
Century Blvd.West Ln.Pine St.
Vine St.
Pine StStockton St.Turner Rd.
Pine St.
Turner Rd.
Vine St.Stockton St.Mills Av.Hwy. 99Hutchins St.Lockeford St.Hwy. 99Elm St.
Lodi Av.
Elm St.
EXHIBIT A Vicinity Map
Legend
!Project Locations
City Limits µ0 0.5 10.25
Miles