PROJ01996

• Contract/PO #: FS0068FX
• Contractor Name: Minturn, Town of
• Contract Type: Loan
• Water District: 0
• Loan Projects - Doc Type: Feasibility Study

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2. Non-construction and Other Projects. Not applicable.

3. Annual Operation and Maintenance. Future maintenance costs for cleaning and applying
a new interior coating or exterior paint will be slightly higher for the larger tank. Since this
work is commonly required only after a period of 15 years or more, those costs have not been
quantified in this preliminary study. Other than periodic inspection, no other maintenance
expense is associated with the storage tank. It should be noted that operation and maintenance
work associated with the new tank will merely be replacing that which is currently performed
on the existing tank, Because the new tank is replacing an older tank which is in poor condition,
the required maintenance effort should be less than what is now required,

4. Present Worth, Because operations and maintenance of the new tank will be approximately
the same regardless of tank size, and because it does not represent an added burden to existing
operational expense, a present worth cost analysis for each tank size alternative was not
,prepared, Alternative cost comparison can be made based on the initial construction cost.

H. Advantages/Disadvantages.

The larger size tank has obvious advantages related to increased storage capacity and the ability
of the tank to satisfy conservatively applied design criteria. However, it has the disadvantage
of being significantly more expensive, approximately 22% to 25% higher than the smaller 600,000
gallon storage tank alternative. Since the construction cost for the larger tank would consume
a significant portion of the financial resources available for the water system improvements, of
which the storage tank is just a part, it is rejected for reasons related to its cost.

The 600,000 gallon tank is the preferred choice. The tank will contain sufficient reserve to meet
ISO criteria for fire protection. The availability of planned ground water wells to supply water
during emergency periods and the ability to flow water by gravity alone into the distribution
system from the treatment plant clearwell, reduces the reliance on storage reserve to provide for
emergency needs. .

V.2 Type of Storage Tank

A. Description

This alternative examines the feasibility of different types of storage tanks, The types considered
for this project are:
· Pre-stressed concrete tank
· Reinforced concrete tank
· Insulated steel tank

Town of Minturn Water System Upgrade Project, March, 1995

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