HomeMy WebLinkAbout8 Sander's Well Contract Amendment
AGENDA ITEM #8
MEETING DATE: November 02, 2022
TO: Board of Directors
FROM: Neil Kaufman, Water System Engineer
Chad Reed, Water Utility Director
SUBJECT: Consideration of a Contract Amendment for the Sanders Well
Rehabilitation Project
APPROVED BY__________
Brian C. Wright, General Manager
RECOMMENDATION:
Authorize the General Manager to execute a contract amendment with Carson Pump
LLC. in the amount of $45,425 to the Sanders Well rehabilitation project, for a new
contract amount of $87,119, preserving the original change order allowance of $4,149
and a new not to exceed amount of $91,059.
BACKGROUND:
The Truckee Donner Public Utility District water system is fed by 11 active groundwater
wells all of which receive regularly scheduled maintenance and inspection on a prescribed
interval. It has been 12 years since Sanders well was last rehabilitated and staff has
identified it as the next well in to be scheduled for maintenance and inspection.
When regular maintenance is performed the life expectancy of the asset is extended and
with inspection any change(s) in the well are documented to ensure appropriate
maintenance schedules are derived. This maintenance and inspection also help ensure
that Sanders Well has both adequate water flow and water quality.
The District has developed a water utility 10-year capital improvement plan (CIP) outlining
the capital maintenance and improvement needs. Included within the water utility 10-year
CIP are the maintenance and rehabilitation of the District’s groundwater well facilities to
ensure the long term reliability of critical water pumping resources.
The District’s scope of work for well rehabilitation is generally broken into five parts:
Mobilization
Removing the well pump and motor assembly
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Inspection/recommendation
Maintenance of well pump and motor assembly
Installation of the pump
Demobilization.
Bid documents for the rehabilitation of Sanders Well were completed in June 2022. The
District began advertising for bids and the bid opening was held on June 21, 2022. One
bid was received. At the regular Board of Director Meeting held on July 6, 2022, the board
authorized the General Manager to proceed with the well rehabilitation project. The
contract was awarded to Carson Pump LLC of Carson City, Nevada and fully executed
on August 2, for a total authorization not to exceed $45,634.
ANALYSIS:
Well rehabilitation involves removal of the motor, column/shaft and pump, once these
items are removed from the well casing hole they can be thoroughly inspected. After
removal and inspection of Sanders Well, Carson Pump LLC is recommending the column
and pump bearings to be replaced due to excessive corrosion and wear. Several points
along the column weld seams are approaching the end of useful life and replacement is
recommended prior to the next maintenance cycle. Pump bearings are an essential
component in pump efficiency (energy efficiency), and extending their use further into the
lifecycle is not recommended. Contingent upon the authorization of the contract
amendment, Carson Pump is scheduled to complete the additional well rehab work before
the end of the year.
OBJECTIVES & GOALS:
This item is in support of the following objectives and goals:
District Code1.05.020 Objectives:
1. Responsibly serve the public.
3. Provide reliable and high quality water supply and distribution system to meet current
and future needs
5. Manage the District in an environmentally sound manner
6. Manage the District in an effective, efficient and fiscally responsible manner.
Strategic Goals:
1. Manage for Financial Stability and Resiliency
FISCAL IMPACT:
The cost proposal from Carson Pump LLC for additional column pipe, pump bearings and
work is $45,425.
The funding source for this additional work would be the Water Department Capital Project
Plan. As stated in the July 6, 2022 approved Board Meeting staff report:
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The Board of Directors authorized the General Manager to enter into a contract for
the rehabilitation Martis Valley and Fiber Board Wells during the 5/18/2022 board
meeting. The total anticipated cost for the Martis Valley and Fiber Board well
project is $211,629. The 2022 Capital Project plan allocated $327,473 dollars
leaving $115,844 in this year’s capital Project plan allocations for well
rehabilitation. The anticipated cost for the Sanders rehabilitation project is $45,634
leaving $70,210 in the 2022 Capital Project allocation for well rehabilitation.
The proposed contract amendment authorization of $45,425 for Sanders Well
Rehabilitation will reduce the remaining fund balance of $70,210 to $24,785 for 2022
Capital Project allocations for well rehabilitation.
ATTACHMENTS:
None
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