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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Alternative 3, a cooperative effort with the Colorado Department of

Highways, has already been initiated. The Department operates two rest areas

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on 125 east of Larkspur and had intended to construct two package-type treatment

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plants- one in each area - in October, 1978. The Larkspur Homeowner's Association

became aware of these plans and asked the Department to consider constructing

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a single lagoon type facility with sufficient capacity for both rest areas

and the town of Larkspur. A series of meetings in August and September led

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to agreement between the Association and the Department on the size, location

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and design of the facility. The Department of Highways has completed the

design of the lagoon system and anticipates completion of the construction

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by January, 1979. Two-thirds of the 75,000 gpd plant capacity will be reserved

for the Department and one-third for Larkspur,

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When Larkspur is ready to discharge wastewater into the treatment facility,

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it will be expected to pay one-third of the construction cost of the facility

or approximately $34,000.

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The annual operation and maintenance costs will also be pro-rated on

lagoon capacity with the Department paying 2/3 and Larkspur paying 1/3. The

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annual share for Larkspur is estimated at about $3,500,00 for salary, overhead,

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electricity and disinfection. The present worth of $3,500.00 annual costs for

twenty years at 7% interest is $37,000. The total equivalent cost of this

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wastewater treatment alternative is $71,000.

Treatment Alternatives

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The recommended ranking of each alternative wastewater treatment method,

based on cost and long-term stability, is presented below in order of decreasing
desirability.

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