HomeMy WebLinkAboutAgenda Report - December 10, 2018 C-03 SMTM
CITY OF LODI
COUNCIL COMMUNICATION
AGENDA ITEM
C-3
AGENDA TITLE: Approve Specifications and Authorize Advertisement for Bids for Granular
Activated Carbon Replacement, Well No. 4R and Well No. 22
MEETING DATE: December 10, 2018
PREPARED BY: Public Works Director
RECOMMENDED ACTION
Approve specifications and authorize advertisement for bids for
granular activated carbon replacement, Well No. 18 and Well
No. 20.
BACKGROUND INFORMATION: Granular activated carbon (GAC) is utilized at certain well sites to
adsorb dibromochloropropane (DBCP) and other contaminates in
the drinking water. Over time, the carbon loses its adsorptive
capacity and must be replaced. Recent test results indicate that while the current GAC in the vessels at
Well No. 4R and Well No. 22 have reduced adsorptive capacity and are ready for replacement, the water
quality being delivered to our customers meets or exceeds all State and Federal requirements.
Well No. 4R is located at 1215 Thurman Street and has three vessels with 30,000 pounds of GAC each.
Well No. 22 is located at 2001 South Cherokee Lane and has two vessels with 30,000 pounds of GAC
each. The GAC filter systems at these locations have been in service since 1997, with the most recent
GAC replacement in 2008. The current GAC has treated 2.13 billion gallons of water at Well No. 4R and
1.34 billion gallons at Well No. 22. The total amount of GAC to be replaced with this project is
150,000 pounds. The well site locations are graphically shown on Exhibit A.
The specifications are on file in the Public Works Department. The project estimate is $300,000 and the
planned bid opening date is January 9, 2019.
FISCAL IMPACT: Funding comes from the DBCP Operations and Maintenance account
which is funded with proceeds from the City's DBCP settlement.
FUNDING AVAILABLE: Funding will be identified at project award.
Prepared by Sean Nathan, Senior Civil Engineer
CES/SN/tdb
Attachment
cc: Utilities Superintendent
APPROVED:
(kJ? _,E2
Charles E. Swimley, Jr.
Public Works Director
Schwa City Manager
K:\WP\PROJECTS\WATER\GAC4R22\CSA.doc 11/27/2018
Exhibit A
Vicinity Map
Legend
Project Locations
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