FLOOD02983

• County: Arapahoe
• Community: Littleton
• Stream Name: Lee Gulch, Little Creek
• Basin: South Platte
• Title: Major Drainageway Planning
• Date: 9/1/1978
• Prepared For: Littleton
• Prepared By: UDFCD
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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VI. COST ESTIMATES

MAINTENANCE COSTS

GENERAL

An estimate of the annual maintenance costs of the proposed improve-

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A cost estimate for each alternative studied was presented in the Phase A

ments is included in the summaries. Maintenance of the drainageway is

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report. This was used as the basis of the Benefit-Cost Analysis of the al-

required if the improvements are to function as intended. The cost as

ternatives. These costs are summarized in Table III.

estimated per unit are tabulated below:

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Cost estimates for the selected alternatives are summarized by reach and

Open Channel

$550/1000 feet/year
$ 500/1000 feet/year

Closed Conduit

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jurisdiction in Tables V, VI and VII respectively, and the costs are tabulated

Park/Detention Pond

$lOOO/Acre/year

by construction costs, land acquisition costs, fiscal and administrative

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costs, and operation and maintenance costs.

REFERENCES:

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CAPITAL COSTS

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1. Construction Costs: The construction costs of the proposed improvements

KKBNA, Inc., Major Drainageway Planning, Lee Gulch, Little Creek
Phase A Report, Urban Drainage and Flood Control Dist., Denver, 1977

are based upon unit costs of similar construction in the Denver area

URS Co., Hajor Drainageway Planning, Sloans Lake Basin, Phase B
Report, Urban Drainage and Flood Control Dist., Denver, 1977

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adjusted to the present (July, 1978). These unit costs are summarized

in Table IV. Included as part of the construction costs is an allowance

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of 20% for contingencies that could arise due to construction problems

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that cannot be foreseen at this time and an allowance of 15% for engi-

neering services.

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2. Land Acquisition Costs: Land acquisition costs are based upon information

obtained from the County Assessors Office during the Phase nAn study and

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average $60,000 per acre in the downtown Littleton area. Included in the

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cost is any relocation costs associated with acquiring the necessary

right-oi-way. No land acquisition costs were estimated for land that is

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owned by a public entity.

3. Fiscal and Administrative Costs: An allowance of 8% of the construction

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costs is included to cover the administrative, legal, and fiscal expenses

of the projects.

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