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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Resources described earlier show that the Dawson Arkose may be a good source

of water and that a well yield of 50 gpm could be expected without difficulty.

The surface area required to be set aside (i.e. no more wells completed

in the Dawson Arkose) would amount to about 200 acres according to Mr. John

Romero of the Water Resources Division. It appears feasible that the American

Federation of Human Rights could agree to refrain from drilling Dawson Arkose

wells in the SEt of Section JJ and the NEt of the NEt of Section 4 as shown

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on Map 1 at the rear of this report. If the Federation could agree to that

restriction, a deep well could be located approximately as shown on Map 1.

The area appears to be a gocd geographic location for a well, since it lies

at the confluence of three creek channels and a number of other wells com-

pleted in the general area are all good prcducers. The proposed well site

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was reviewed with Dr. Morton Bittinger of Earth Resources Inc, a company

specializing in groundwater development. He agreed that the site appears

favorable.

The advantages of a well in the Dawson Arkose are the opposite of the

disadvantages of a shallow well on Plum Creek:

1. Fairly reliable aC'l.uifer, not subject to fluctuations of water
level with climate changes.

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2. Apparently no problem with iron in siillilar nearby wells.

The estimated cost to drill and complete one 50 gpm well with a maximum

depth of 500 feet in the location shown is approximately $65,400 - including

the well, pump, well house, and cost multiplier for contingency, inflation,

and professional services.

Annual operation and maintenance costs are estL~ated at $1,500 for

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