C150185 Feasibility Study

• Contract/PO #: C150185
• Contractor Name: Mancos Valley Beaver Ditch Company
• Contract Type: Loan
• Water District: 34
• County: Montezuma
• Loan Projects - Doc Type: Feasibility Study

Mancos Valley Beaver Ditch Loan Application 1/4/2006 3:19 PM orw
Alternative No. 9 was considered unacceptable because the Members need to improve the
Ditch. The Ditch is located on a glacial gravel deposit that sits atop a layer of Mancos shale.
Excessive water is being lost to seepage and evaporation. The drought',of 2002 illustrated the
how poorly the existing structure performs. Although water was diverted from the river during
the drought, the water was lost to seepage and evaporation and the Members were unable to
raise a hay crop and had no stock water for weeks at a time. The Members also wish to
upgrade their on -farm practices for more efficient use of water.
Alternative No. 2 was ruled out because the cost of individual pipeline projects is prohibitive
and a single pipeline without a cost subsidy is beyond the ability of the members to repay.
Alternative No. 3 was selected because of the NRCS 75 %cost share, the engineering services
provided by NRCS and the timing for the Salinity Control Project meets the Members needs.
The selected alternative, Alternative No. 3, will include a new diversion structure; flow rate
measurement structure, a single pipeline of 21 inch diameter for the first 4200 feet, a graduated
PVC pipeline from 18 to 15 inch diameter for the remainder of approximately 21,000 feet of PVC
pipeline, varying in size from 18 inch down to 15 inch to the final delivery point on the Wolcott
Ranch, ; metered delivery points to each Member; various valves, drains and vents; and a
screen structure at point of diversion on the river.
Cost Estimate
The Montezuma County Office of the NRCS has prepared engineering designs and cost
estimates for the Project. The NRCS Preliminary Design report and detailed cost estimate are
included in Appendix D.
The estimated cost of the Project from the NRCS 2005 Cost Docket is $904,750
The cost breakdown is summarized in Table 1. ,
Table 1 Mancos Valley Ditch Company Pipeline Project- NRCS Cost Estimate
Item
Pipeline Segments
Length
Diameter'
Cost/ft $
Amount $
River to Jakowski pipeline
4,200 ft
21 in
j
$51,000
Jankowski >White> Colbert pipeline
12,800 ft
18 in
$190,000
Colbert> Wolcott Pipe Line
3700ft
15 in
1
$106,000
Total
1
$904,750
Implementation Schedule
The NRCS completed the final design on December 2, 2005.
March 2005 and to be completed in phases during2006.
Page 8 of 16 pages
Construction is expected to begin '