HomeMy WebLinkAboutAgenda Report - March 3, 2010 D-05s�AGENDA ITEM
CITY OF LODI
COUNCIL COMMUNICATION
,M
AGENDA TITLE: Approve Plans and Specifications and Authorize Advertisement for Bids for
White Slough Water Pollution Control Facility Bio -Solids Dewatering Facility
Fundedwith 2007 Bond Proceeds
MEETING DATE: March 3, 2010
PREPARED BY: Public Works Director
RECOMMENDED ACTION: Approve plans and specifications and authorize advertisement for
bids for White Slough Water Pollution Control Facility Bio -Solids
Dewatering Facilityfunded with 2007 bond proceeds.
BACKGROUND INFORMATION: The City has made substantial progress on the State -mandated
improvements at the White Slough Water Pollution Control Facility
(WSWPCF). One of the final improvementsto be made, as
recommended in the 2001 White Slough Master Plan, is the addition
of bio -solids dewatering facilities.
As a result of the 2007 Waste Discharge Permit requirements, solids handling at WSWPCF has changed
and nitrate levels have significantly reduced in the land -applied effluent and bio -solids. However,
WSWPCF has for many years produced more bio -solids (2,500 tons per year) than can be applied to the
agricultural fields (1,800 to 2,000 tons per year). Bio -solids storage capacity is limited and the proposed
bio -solids dewatering facilities will allow for removal of 500 to 1,000 tons annually that will be hauled to a
regional landfill. Additional operational goals include:
• Providing additional bio -solids storage capacity; and
• Providing the capability to remove one bio -solids storage lagoon from service and perform
maintenance while the plant remains in operation.
Constructing a bio -solids dewatering and storage facility will assist the City of Lodi in meeting future
discharge permit requirements and provide additional bio -solids handling capacities. The structure will
consist of dewatering equipment and chemical feed equipment. The dewatering equipmentwill consist of
two skid -mounted rotary fan presses. Appurtenant facilities will include piping, pumps, and covered
storage bays for the dewatered sludge.
The WSWPCF Master Plan developed priorto the 2003 Phase I Improvements project anticipated that
bio -solids may become an issue during future permit applications and discussed the dewatering facility.
Council is being asked to approve the plans and specifications and authorize advertisement for bids for
the project. A prequalification process is included to determine eligible bidders and ensure contractors
have the necessary experience to perform the work.
APPROVED: \
Blair Kirtg'—,IManager
K:\WP\PROJECTS\SEWER\WSWPCF\Biosolids Dewatering\CC Approve WSWPCF Biosolids dewatering facility Plans Specs.doc 2/24/2010
Approve Plans and Specifications and Authorize Advertisement for Bids for White Slough Water Pollution
Control Facility Bio -Solids Dewatering Facility Fundedwith 2007 Bond Proceeds
March 3, 2010
Page 2
The plans and specifications are on file in the PublicWorks Department. The planned bid opening date
is May 4, 2010.
FISCAL IMPACT: This project will be funded by the Wastewater Fund using the remaining
2007 Certificates of Participation (approximately $5,10O,000). The
anticipated annual operations and maintenance costs are expected to be
approximately $200,000, including the costs for off-site transportation and
disposal of approximately 900 dry tons of bio -solids each year.
FUNDING AVAILABLE: The project estimate is $5,100,000, including construction administration
services, construction contract, testing and inspection and other project -
associated expenses. Appropriation will be requested at the time of
contract award.
ka� -J'04
F. Wallv Sa delin
PublicWorks Director
Prepared by Gary Wiman, Construction Project Manager
FWS/GW/pmf
cc: Charles Swimley, Deputy PublicWorks Director
Del Kerlin, Wastewater Treatment Superintendent
K:\WP\PROJECTS\SEWER\WSWPCF\Biosolids Dewatering\CC Approve WSWPCF Biosolidsdewatering facility Plans Specs.doc 2/24/2010