BOARD00031 ‎(2)‎

• Board Meeting Date: 9/20/2006
• Description: CWCB Director's Report
• Board Meetings - Doc Type: Memo

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Water Source: Mancos River
Terms of Loan: $904,500 @ 2.5% for 30 yrs.

Project Yield: 1,431 acre-feet
Project Type: Ditch Rehabilitation

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The Mancos Valley Beaver Ditch Company manages the Beaver Ditch for 4 members that own water
rights and land served by the Ditch. The existing ditch system is comprised of an open, grass-lined
channel, approximately 4.6 miles in length, with a carrying capacity of 10.5 cfs. This project involves
enclosing the existing ditch with 10-18-inch PVC pipe, with metered delivery points. The project is being
design by NRCS Cortez Office and is anticipated to commence construction in spring of 2006. The
project loan was amended at the January 2006 Board Meeting from $413,000 to $904,500, to cover
increase pipe costs and items not included in the original cost estimate. Pipe for the project has been
purchased and delivered. The project has been awarded to Lewis Excavating, Mancos, Colorado, who
has commenced construction. The project is approximately 25% complete.

34. Town of Keensburg - Raw Water Pipeline and Well Replacement

Authorization: Construction Fund
Water Source: South Platte River
Terms of Loan: $1,523,080@3.75% for 30 yrs.

County: Weld
Project Yield: 140 AF
Project Type: Pipeline/Well

The Town ofKeenesburg is located in Weld County 30 miles north of Denver on 1-76. The population is
1100, and the Town currently serves about 461 water taps. The water supply comes from 5 wells that
draw water from the Laramie - Fox Hills aquifer, and have a total capacity of 221 acre-feet per year. The
Town's well water is pumped directly into the distribution system, which results in some users not
receiving proper disinfection contact time. The Town has undertaken a separate project that will allow
well water to be pumped to the water storage tank prior to being delivered to distribution. The proposed .
project with CWCB funds, includes purchase of 139.6 AF of well water rights in the Lost Creek
Groundwater Basin, and construction of5.5 miles of pipeline to the Town. The purpose of the project is
to improve the water quality by blending the new water with the existing Laramie-Fox Hills water.
Blending the water has been evaluated, and providing a 50%-50% blend of the two waters shows that the
SAR ratio drops below 10, and the fluoride level drops to approximately 1.5 mg/l, below the MCL of2
mg/I. The well and water rights purchase has been completed. The Town is currently working on the
design for the pipeline.

35. East Mancos Highline Ditch Company - Ditch Rehabilitation

Authorization: Severance Tax Fund
Water Source: East Fork Mancos River
Terms of Loan: $904,000@ 2.5% for 30 yrs.

County: Montezuma
Project Yield: 869 AF
Project Type: Ditch Rehabilitation

The East Mancos Highline Ditch Company is comprised of 6 members that manage 5.75 miles of open
ditch, with an annual diversion of approximately 870 cfs and a 700 acre service area. This project
involves piping the 5.75 miles of ditch with lO-inch to 15-inch PVC Pipe to create a pressurized system
for the users. The project is a joint effort with NRCS's Salinity Control Program. NRCS is contributing
75% of the cost towards the design and construction of the project. The project is anticipated to
commence construction in the fall of 2006.

Proiects under Desie:D

1. Ryan Gulch Reservoir Company - Ryan Gulch Dam Rehabilitation

Authorization: SB 99-173

County: Larimer - S. of Loveland

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