PROJ00223

• Contract/PO #: C153723
• Contractor Name: Orchard Mesa Irrigation District
• Contract Type: Loan
• Water District: 0
• County: Mesa
• Bill Number: HB 95-1155
• Loan Projects - Doc Type: Feasibility Study

Phase 1 - 8,371 ft,; 30 in. pipe
Phase 2 - 5,323 ft.; 27 in, pipe
Phase 3 - 7,792 ft.; 21-27 in. pipe
Total Length - 21,486 ft.

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3. OMID obtains its revenue from assessments on irrigated lands within the
District. This revenue can be adjusted as needed to pay for operational
costs and payback on the CWCB loan,

4, OMID has formed a separate entity (the Mutual Mesa Enterprise) to own
and operate the new facilities. It is exempt from requirements of
'Amendment 1'.

Three separate alternatives for improving the MML ditch were evaluated as
follows:

1) Replace the existing ditch with a 24 to 30 inch diameter pipeline,

2) Replace the existing ditch with a reinforced concrete ditch system,

3) Take no action,

The project has been divided into three phases as follows:

The CWCB and NRCS funds apply only to Phase I, which is scheduled for
completion in April 1997, No schedule or funding has been established for Phases 2 and
3,

NRCS has prepared a complete design for the pipeline alternative. The Phase 1
design and bid schedule was used as a basis for estimating costs for Alternate No.1,
For this report, a preliminary design was prepared for an equivalent concrete-lined ditch
and a cost estimated was developed for that alternative, The pipeline alternative has the
lowest total cost and lowest annual cost. In addition, an evaluation decision matrix was
prepared to evaluate non monetary costs, The pipeline had a much higher score on the
evaluation matrix than the concrete-lined ditch, The pipeline scored higher on salinity
reduction, water savings, safety and liability, ease of use, shorter construction period, and
longer life cycle, The alternative selected for this project is to replace the existing MML
Ditch with a pipeline. Estimated total cost is $925,940.