HomeMy WebLinkAboutAgenda Report - April 4, 2012 C-033
AGENDA ITEM C
I
CITY OF LODI
,. COUNCIL COMMUNICATION
AGENDA TITLE: Approve Plans and Specifications and Authorize Advertisement for Bids for
Well 6R Granular Activated Carbon Treatment System
MEETING DATE: April 4, 2012
PREPARED BY: Public Works Director
RECOMMENDED ACTION: Approve plans and specifications and authorize advertisement for
bids for Well 6R granular activated carbon treatment system.
BACKGROUND INFORMATION: This project consists of furnishing and installing a granular activated
carbon (GAC) treatment system for Well 6R, as shown on the plans
and specifications for the project.
Well 6R was constructed in 1985 and is one of the City's higher -producing municipal water wells. Located
on Mission Street at the northerly side of Blakely Park, the well produces approximately 1,300 gallons per
minute (gpm) when operational.
In accordancewith State requirements, the City monitors Dibromochloropropane (DBCP) levels for all the
City's water wells. Due to DBCP concentrations exceeding the maximum contaminated level of 0.2 parts
per billion, the well was taken out of service on February 7, 2011.
The City currently has GAC treatment systems on six water wells and intends to construct the same type
of system on Well 6R adjacent to the Lodi Boys and Girls Club building (a short distance away from the
well site) to minimize visual impacts to the neighborhood, as shown on Exhibit A. The Boys and Girls Club
Board of Directors does not object to this location. On March 7, 2012, notices regarding the projectwere
sent to property owners and residents adjacent to the site, along Washington Street and Mission Street
(Exhibit B).
In 1996, the City executed a DBCP settlement agreement with Shell Oil, Dow Chemical and Occidental
Chemical companies (Defendants). Underthe terms of the settlement, the City will be reimbursed up to
$671,000 (using the latest available inflationary index) by the Defendants for the design and construction
of the GAC treatment system for this well site. The total project cost, including engineering and
inspection, is anticipated to be less than $900,000.
Well 6R is critical to supply water in this area of the City during peak summer demand and to provide
adequate fire flow; therefore, staff is recommending the installationthe GAC treatment system at this site
to continue utilizing the production capacity of Well 6R.
The plans and specifications are on file in the Public Works Department. The planned bid opening date
is May 16,2012.
FISCAL IMPACT: Annual operation and maintenance costs for the water utility will increase as
a result of this project; however, these costs will be reimbursed through the
DBCP settlement.
FUNDING AVAILABLE: Funding for this project will come rom the Water Capital Outlay Fund (181).
A) &L&J e,-�2 — .Z L-
F. Wally Sindefin
PublicWorks Director
Prepared by Lyman Chang, Senior Civil Engineer
Attachments
cc Deputy Public Works Director
APPROVED:
K6nradt Bartlam, City Manager
K\ WP\PROJECTSMATER\Well6R GAC Filter\CPS&A doe
3/19/2012
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CITY COUNCIL
JOANNE MOUNCE, Mayor
ALAN NAKANISHI,
Mayor Pro Tempore
LARRY D. HANSEN
BOBJOHNSON
PHIL KATZAKIAN
PUBLIC WORKS DEPARTMENT
CITY HALL, 221 WEST PINE STREET/ P.O. BOX 3006
LODI, CALIFORNIA 95241-1910
TELEPHONE (209) 333-6706 IFAX (209) 333-6710
EMAIL pwdept@lodi.gov
http:l/www.lodi.gov
March 7, 2012
Property Owner/Resident
SUBJECT: Well 6R Granular Activated Carbon Filters (Blakely Park)
NO C
KONRADT BARTLAM
City Manager
RANDIJOHL
City Clerk
D. STEPHEN SCHWABAUER
City Attorney
F. WALLY SANDELIN
Public Works Director
This letter is to inform you that the City is proposing to install granular activated carbon
(GAC) filters at the Blakely Park site, as shown on the enclosed site map. These filters
are needed to remove Dibromochloropropane (DBCP) from the drinking water produced
from the existing Well 6R site.
DBCP was used extensively in the past to kill nematodes in vineyards. It was banned in
California in 1997, but trace amounts are shill present in groundwater. The City has
actively monitored the DBCP levels in all City wells to ensure DBCP concentrations
remain below the maximum contamination level of 0.2 parts per billion. Well 6R has
been out of production since exceeding this level last year. This well was constructed in
1985 and is one of the City's highest -producing water wells. Well 6R is critical to supply
water in this area of the City during peak summer demand and to provide adequate fire
protection.
The City:is proposing to install the GAC filter system at the Blakely Park site so that the
well can be returned to service. The construction of the filter system is expected to occur
this summer.
Enclosed is a rendering of the GAC filter system proposed for construction. Please feel
free to contact Lyman Chang, Senior Civil Engineer, at (209) 333-6800, extension 2665,
if you have any questions or comments.
Sincerely,
Charles E. Swimley, Jr.
Deputy Public Works Director/City Engineer
Enclosures
CES/LC/pmf
cc: Deputy Public Works Director Swimley
Senior Civil Engineer Chang
K:\WP\PROJECTS\WATER\Well6R GAC Filter\Public Notice.doc