LPPD000467

• Contract/PO #: C150173
• Contractor Name: Upper Surface Creek Domestic Water Users Association
• Contract Type: Loan
• Water District: 0
• County: Delta
• Loan Projects - Doc Type: Feasibility Study

Feasibility Study - USCDWUA
Spaulding Peak Treatment Plant

Introduction (Need for the Project)

The Upper Surface Creek Domestic Water Users Association (USCDWUA) is a rural domestic
water provider. It is registered with the Colorado Department of Health and Environment as a
public water supply under PWSID C00115784. Since the formation of USCDWUA in 1955,
collection and treatment of raw water has been through facilities that are jointly owned by
USCDWUA and the Town of Cedaredge. USCDWUA is a one-fifth owner. Growth in the
USCDWUA service area has caused a demand for water that is now two-fifths of system capacity,
USCDWUA has been unable to acquire more plant capacity from the Town. USCDWUA has
decided, by a vote of the Association shareholders, to construct a new treatment plant and raw
water collection system, and separate from the Town of Cedaredge.

Project Sponsor

USCDWUA is a non-profit corporation registered in the State of Colorado. There are 763
shareholders owning 857 shares of stock. Each share represents a domestic water tap.
USCDWUA has the power to set monthly assessments to be paid by the shareholders, the
power to cut off water deliveries to shareholders that fail to pay their assessments, and the
power to set the price of a membership, if ratified by the members, The USCDWUA
Articles of Incorporation and By-Laws are included in Appendix A.

Project Service Area and Facilities

USCDWUA provides domestic water to a 40 square mile service area in Delta County. The new
intake for the USCDWUA treatment plant is located northeast of the Town of Cedaredge, on
Surface Creek. The intake incorporates trash racks, and a self-cleaning fine screen. A
concrete sedimentation basin is designed to provide settling time for the removal of sand, grit,
and heavier silt. The raw water pipeline will extend southwest approximately 3000 feet to the
new treatment plant. The new treatment plant will employ membrane filtration technology to
assure removal of harmful organisms such as bacteria, Giardia, and Cryptospordium.
Pretreatment of the raw water with Chlorine Dioxide will improve taste and odor, and reduce the
formation of carcinogenic compounds often association with plain chlorination. From the
treatment plant, treated water will flow 2800 feet to a storage tank a the head of the USCDWUA
distribution system. The distribution systems consists of about 100 miles of pipeline, three
storage tanks, 40 pressure regulating stations, and 50 fire hydrants. Customers are rural
residential, consisting of farms and ranches, and a few subdivisions of 20 lots or less, In
addition to domestic, the water is used for livestock watering, fruit processing, and dairying. A
Service Area Map is provided in Appendix B.

Hydrology and Water Rights

The source of water for USCDWUA is a direct flow water right of 0,5 cfs in Surface Creek
(attributable to 10 shares of the Alfalfa Ditch), and stored water in numerous reservoirs that
drain into Surface Creek. The direct flow right owned by the Alfalfa Ditch is for 20 cfs and is a
No. 1 decree with an appropriation date of December 17, 1881, and an adjudication date of
June 17, 1889. USCDWUA also owns 16 shares of Surface Creek Ditch and Reservoir Co., 41
shares of Leon Lake Ditch and Reservoir Co" 43 shares of Cedar Mesa Ditch and Reservoir

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