HomeMy WebLinkAbout11 Tank Rehab 2023 Award TRUCKEE - AGENDA ITEM #11
Public District
MEETING DATE: September 7, 2022
TO: Board of Directors
FROM: Neil Kaufman, Water System Engineer
Chad Reed, Water Utility Director
SUBJECT: Consideration of a Professional Services Contract with Carollo
Engineers to Develop Contract Documents for Rehabilitation of the
Prosser Lakeview and Ski Run Tanks
APPROVED BY
Brian C. Wright, General Manager
RECOMMENDATION:
Authorize the General Manager to execute a professional services contract with Carollo
Engineers to develop contract documents for rehabilitation of the Prosser Lakeview and
Ski Run Tanks in the amount of$182,975, plus a ten percent change order allowance for
a total authorization not to exceed $201,300.
BACKGROUND:
The District currently operates 34 water storage tanks located throughout the water
distribution system:
• 30 ground level welded steel tanks
• Two ground level bolted steel tanks
• One partially buried pre-stressed concrete tank
• One elevated welded steel tank
The tanks range in volume from 100,000 gallons to 1.5 million gallons with the oldest tank
constructed in 1963 and the newest tank constructed in 2021 .
The District staff evaluated adjustments in capital maintenance required to extend the
useful life of its inventory of water utility storage tanks during preparation of the 2020
Water System Capital Improvement Plan update. Through this process staff determined
the need to increase funding allocated to a more comprehensive tank maintenance
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program and subsequently budgeted. During the development of a 10-year tank
maintenance plan, staff identified the benefits of an outside engineering consultant to
analyze:
• Seismic Evaluation - Conduct a seismic evaluation of all of the ground level steel
water tanks; identify potential solutions to minimize seismic risk for each tank; and
prepare budget level cost estimates for these potential solutions.
• Rehabilitation of Ground Level Welded Steel Tanks — These tanks were
constructed in early and mid-1970's. Based on the most recent inspections and
maintenance history, staff has identified two additional tanks most in need of
rehabilitation. The consultant will perform more detailed evaluations of the Prosser
Lakeview and Ski Run Tanks and then prepare a set of bid documents to
rehabilitate the tank and upgrade it to current standards.
In June 2021, the Water Department issued a Request for Proposals (RFP) to select a
consultant to perform the engineering work. After review of the proposals, a contract was
awarded to Carollo Engineers in August 2021.
ANALYSIS:
The FY 2023 capital budget includes $879,990 for storage tank rehabilitation. The Water
Department has selected the Prosser Lakeview (250K gallons) and Ski Run (100K
gallons) tanks for rehabilitation in 2023. The Water Department requested a price
proposal from Carollo to prepare the bid documents for these tanks. Preparation of these
bid documents will reflect the lessons learned from the comprehensive rehabilitation of
the Roundhill Tank and condition of the tank. The price proposal from Carollo for this
work is $182,975.
It is anticipated that rehabilitation of these tanks will be declared categorically exempt
under CEQA. Once a firm construction schedule has been established, the District will
contact the adjoining property owners to inform them of this upcoming project.
These projects are on schedule with the Water Utility's capital improvement plan.
OBJECTIVES & GOALS:
This item is in support of the following goals and objectives:
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
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FISCAL IMPACT:
The FY 2023 water utility capital project budget includes $879,990 for storage tank
rehabilitation, and is currently forecasted to be sufficient to include this subject contract
for engineering services. The engineering services incurred in 2022 (majority of
contract) to this 2023 project are currently forecasted in 2022 capital expenditure
forecast.
Excluding vehicle reserve, facility fee projects, and new debt proceeds projects; water
capital expenditures for 2022 for budget and forecast are $2.964M and $3.086M,
respectively, including the proposed $201,300 engineering services. The operating
reserve ($5.2M as of 12/31/2021) has sufficient funds for this forecasted $122,000
capital expenditure overage in 2022.
Attachments:
None
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