PROJ00237

• Contract/PO #: C153400
• Contractor Name: Larkspur, Town of
• Contract Type: Loan
• Water District: 8
• County: Douglas
• Bill Number: SB 79-537
• Loan Projects - Doc Type: Feasibility Study

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Water Supply Required

To satisfy the annual consumption of the future design population,

Larkspur must have the legal rights and physical capability of producing

38 acre feet or 12.3 million gallons of water per year. ,

The maximum day demand rate can be experienced on many consecutive days

during the warm summer months. If the water supply wells produced only the

average day rate, the excess demand on maximum days would have to be supplied

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from storage, thus requiring a very large storage capacity. To reduce the

necessary storage volume, the water supply wells are normally constructed to

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yield the maximum day demand rate. To accommodate the maximum day demands of

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the design population, the water supply wells will have to yield just under

50 gpm.

The peak hour demands (experienced for a few hours on the days of

maximum usage) and the 500 gpm fire flows must be supplied from storage.

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Wastewater Loads

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The Colorado Department of Health has jurisdiction over the design,

construction and operation of water and wastewater systems in the state.

The Department and the Water Quality Control Commission have established

Standards and criteria for a number of aspects of community wastewater systems.

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One of those criteria requires that, where no data is available to indicate

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otherwise, the wastewater generated by a community shall be assumed to be

100 gpcd (gallons per capita per day).

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For the present and future design populations, the hydraulic wastewater

loan in gallons per day will be:

Average

100 gpcd

Present
Population
150 people

15,000 gpd

Future
Popul at ion
225 people

22,500 gpd

Load

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