HomeMy WebLinkAboutAgenda Report - August 5, 2020 C-14AGENDA ITEM c-14
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AGENDA TITLE
MEETING DATE:
PREPARED BY:
Accept lmprovements Under Contract for White Slough Water Pollution Control
Facility 2017 lrrigalion System lmprovements Project
August 5,2020
Public Works Director
RECOMMENDED ACTION Accept improvements under contract for White Slough Water Pollution
Control Facility 2017 lrrigalion System lmprovements Project.
BACKGROUND INFORMATION: This project was awarded to DSS Company dba Knife River
Construction, of Stockton, on December 6,2017, in the amount of
$1,022,362. The contract has been completed in substantial
conformance with the plans and specifications approved by City Council.
This project included replacing a concrete lined irrigation channel and relocating an existing irrigation
pipeline, associated electrical/instrumentation improvements, and other incidental and related work. Both
facilities convey reclaimed wastewater used to irrigate crops on the southern 400 acres of City-owned
propeñy at White Slough Water Pollution Control Facility (WSWPCF). Addressing these two elements of
the irrigation system were high-priority because the existing concrete-lined ditch was prone to leaking
and the existing pipeline underlies a portion of an existing power plant,
The original contract completion date was June 1 ,2018, and the actual completion date was June 1,
2020. the extension in contract time (730 days) was due to a mutually agreed suspension of work to re-
align the pipeline route. The re-alignment was necessary due to Pacific Gas & Electric (PG&E) restricting
access to construct a portion of pipeline located within an existing transmission tower easement as
originally designed. Public Works staff worked with Lodi Energy Center (LEC) staff to redesign and re-
route the pipeline within the LEC site. Work was suspended while the design was coordinated with LEC
staff. Once the new design was finalized, the work had to coordinate with LEC operations, as well as, the
farming irrigation season. DSS Company dba Knife River Construction was very professionaland
accommodated all special requests of the City and LEC in order to get the work completed and on line
prior to the 2020 irrigation season.
The total contract cost is $943,1 13.86. The difference between the original contract amount and the final
contract amount (a savings of $79,248.14) is due to reduced unit quantities of certain bid items.
Following acceptance by the City Council, as required by law, the City Engineer willfile a Notice of
Completion with the County Recorder's office. The notice serves to notify vendors and subcontractors
that the project is complete and begins their 30-day period to file a stop notice requiring the City to
withhold payments from the prime contractor in the event of a payment dispute.
APPROVED
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WSWPCF 2017 lrrigation Systems lmprovements
Accept lmprovements Under Contract for \/!hite Slough Water Pollution Control Facility 2017 lrrigalion System lmprovements Project
August 5, 2020
Page 2
FISCAL IMPACT:This project was needed to avoid State RegionalWater Resources Control
Board violations associated with irrigation water inadvertently leaving
WSWPCF, and to reduce the probability for costlier repairs (and/or
complete replacement) of portions of the irrigation system in the future.
FUNDING AVAILABLE: This project was funded by Wastewater Capital.
Charles E. Swimley, Jr
Public Works Director
Prepared by Gary Wiman, Construction Project Manager
CES/GWtc
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