HomeMy WebLinkAboutAgenda Report - April 15, 2020 C-12c-lzAGENDA ITEM
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AGENDA TITLE:Adopt Resolution Authorizing City Manager to Execute Professional Services
Agreement with Carollo Engineers, lnc., of Walnut Creek, for Progressive Design
Build Construction Documents for White Slough Water Pollution Control Facility
Solids Handling Equipment Procurement and lnstallation Project ($162,500), and
Appropriating Funds ($1 62,500)
MEETING DATE: April 15,2020
PREPARED BY: Public Works Director
RECOMMENDED ACTION: Adopt resolution authorizing City Manager to execute Professional
Services Agreement with Carollo Engineers, lnc., of Walnut Creek,
for progressive design build construction documents for White
Slough Water Pollution Control Facility Solids Handling Equipment Procurement and lnstallation Project,
in the amount of $162,500, and Appropriating Funds in the amount of $162,500.
BACKGROUND ¡NFORMATION: Biosolids are anaerobically digested, and then directed to a
concrete-lined sludge stabilization lagoon at the City's White Slough
Water Pollution Control Facility (WSWPCF). The biosolids from the
digesters are dewatered to a solids content of about '12 percent and stockpiled in an enclosed facility.
Biosolids are applied to approximately 700 acres of the City's agricultural fields.
Of this farmed area, approximately 225 acres receive biosolids on an annual basis. The biosolids
application area is rotated throughout the agricultural fields from year to year. The agricultural fields are
used to grow fodder and feed crops that are not used directly for human consumption. Crops grown on
the City's agricultural properties include fodder crops such as corn, alfalfa, ryegrass, and wheat.
Recently, applied biosolids occasionally exceeded the vector attraction reduction rate because the
volatile solids reduction requirement was not achieved in the anaerobic digestion process. This primarily
resulted from operational challenges associated with the current biosolids dewatering system which
translates into a downstream lack of digester capacity to adequately treat solids loading from the
treatment plant processes.
The proposed Solids Handling Equipment Procurement and lnstallation Project is intended to improve
solids treatment processes. The proposed Professional Services Agreement includes construction
documents for the procurement and installation of a new dewatering screw press and ancillary
equipment; and sludge mixing system improvements in Digester No. 3 utilizing the progressive design
build procurement method. The combination of these improvements will provide increased volatile solids
reduction and insure compliance with the vector attraction reduction rate.
Staff recommends authorizing City Manager to execute Professional Services Agreement with Carollo
Engineers, lnc., of Walnut Creek, for progressive design build construction documents for White
Slough Water Pollution Control Facility Solids Handling Equipment Procurement and lnstallation Project,
in the amount of $162,500, and Appropriating Funds in the amount of $'162,500.
APPROVED ÊFÑ,e
steve\lhwrbàler (AÞr 8. 2o2o)
Stephen Schwabauer, City Manager
K\WP\COUNCIL\2020\CC_Solids Handling Equipment Procurement Carollo.doc
IM
4t3t2020
Adopt Resolution Authorizing City Manager to Execute Professional Services Agreement with Caroìlo Engineers, lnc., ofrr'Valnut Creek, for Progressive Design Build
Construction Documents for Whiie Slough Wâter Pollution Control Facilìty Sol¡ds Handling Equipment Procurement and lnstallation Project ($'162,500), and
Appropriating Funds ($162,500)
April 15, 2020
Page 2
FISCAL ¡MPAGT lmplementing this project will improve the solids handling process at
WSWPCF and mitigate potential regulatory enforcement actions against
the City associated with exceeding the vector attraction reduction rate.
This project does not impact the General Fund.
FUNDING AVAILABLE Appropriation Request:
Wastewater Capital (531 99000.77020) - $1 62,500
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Andrew Keys
Deputy City Manager/lnternal Services Director
Charles E mley, Jr
Public Works Director
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Attachment
K\WP\COUNCIL\2020\CC_Solids Handling Equipment Procurement-Carollo.doc 4t312020
RESOLUTION NO. 2O2O-70
A RESOLUTION OF THE LODI CITY COUNCIL AUTHORIZING THE
CITY MANAGER TO EXECUTE PROFESSIONAL SERVICES
AGREEMENT WITH CAROLLO ENGINEERS, INC., OF WALNUT
CREEK, FOR PROGRESSIVE DESIGN BUILD CONSTRUCTION
DOCUMENTS FOR WHITE SLOUGH WATER POLLUTION CONTROL
FACILITY SOLIDS HANDLING EQUIPMENT PROCUREMENT AND
INSTALLATION PROJECT; AND FURTHER APPROPRIATING FUNDS
WHEREAS, biosolids are anaerobically digested and then directed to a concrete-lined
sludge stabilization lagoon at the City's White Slough Water Pollution Control Facility
(WSWPCF) and dewatered to a solids content of about 12 percent and stockpiled in an
enclosed facility then applied to approximately 700 acres of the City's agricultural fields; and
WHEREAS, recently, applied biosolids occasionally exceeded the vector attraction
reduction rate because the volatile solids reduction requirement was not achieved in the
anaerobic digestion process, primarily resulting from operational challenges associated with the
current biosolids dewatering system which translates into a downstream lack of digester
capacity to adequately treat solids loading from the treatment plant processes; and
WHEREAS, the proposed Solids Handling Equipment Procurement and lnstallation
Project is intended to improve solids treatment processes; and
WHEREAS, staff recommends authorizing the City Manager to execute a Professional
Services Agreement with Carollo Engineers, lnc., of Walnut Creek, for progressive design build
construction documents for White Slough Water Pollution Control Facility Solids Handling
Equipment Procurement and lnstallation Project, in the amount of $162,500; and
WHEREAS, staff also recommends the City Council appropriate funds in the amount of
$162,500, from the fund balance of Wastewater Capital (53199000.77020) for Fiscal Year
2019t20.
NOW, THEREFORE, BE lT RESOLVED that the Lodi City Council does hereby
authorize the City Manager to execute a Professional Services Agreement with
Carollo Engineers, lnc., of Walnut Creek, California, for progressive design build construction
documents for White Slough Water Pollution Control Facility Solids Handling Equipment
Procurement and lnstallation Project, in the amount of $162,500; and
BE lT FURTHER RESOLVED that the Lodi City Council does hereby authorize an
appropriation for the project, in the amount of $162,500, as set forth above; and
BE lT FURTHER RESOLVED, pursuant to Section 6.3q of the City Council Protocol
Manual (Res. No. 2019-223), the City Attorney is hereby authorized to make minor revisions to
the above-referenced document(s) that do not alter the compensation or term, and to make
clerical corrections as necessary.
3::"=1===fj]ji=393:=====================================================
I hereby certify that Resolution No. 2020-70 was passed and adopted by the City
Council of the City of Lodi in a regular meeting held April 15, 2020, by the following vote:
AYES: COUNCIL MEMBERS - Chandler, Mounce, Nakanishi, and Mayor Kuehne
NOES:
ABSENÏ:
ABSTAIN
COUNCIL MEMBERS - None
COUNCIL MEMBERS - None
COUNCIL MEMBERS - None A-r."/øW|trñ'''1/¿t'
PAMELA M. FARRIS
Assistant City Clerk
2020-70