PROJC01798 ‎(2)‎

• Contract/PO #: C150265
• Contractor Name: Supply Irrigating Ditch Company
• Contract Type: Loan
• Water District: 0
• County: Boulder
• Loan Projects - Doc Type: Feasibility Study

~' ` ~xecutiue Summar~
OVERVIEW
~ This study examined the feasibiiity of variou's measures to rehabilitate Knouth Dam for the
Supply Irrigating Ditch Company (SIDC). The purpose of the Knouth Reservoir Project is to
~ enhance the means for Supply Irrigation Ditch Compar~y (SIDC) to continue providing irrigation
water to shareholders by adding another storage option to their present system. 'This study was
~ - prepared in conformance with requirements for funding of the Colorado Water Conservation
Board (CWCB). The design aspects of the project were prepared in conformance with the 2007
~ Dam Safety Rules and Regulations (Rules) of the Colorado State Engineer's Office (SEO). The
information presented in this study was based, in part, on information presented in the study
~ entitled "Feasibility Study for Rehabilitation of Knouth Reservoir Dams and Spillway", prepared
by Smith Geotechnical (Study) dated Febrezary 24, 2003. This study examined the feasibility of
~ non-structural and structural alternatives; and demonstrates the technical, financial,
environmental, and institutional feasibility of rehabilitating the existing dam. The structural
~ alterrzatives included rehabilitating the dam and its appurtenant structures to meet SEO Rules.
~ RECOMMENDED ALTERNATIVE
The recommended maintenance alternative is the construction of a spillway located along the
~ right abutment of the southem dam, removing vegetation from the embankment area, lining
select areas of the upstream dam face with clay, placing riprap along the upstream dam face,
~ enclosing the irrigation ditch within a pipe, and installing dam instrumentation.
FINANCIAL PROGRAM
~ Total capital expenses for the recommended project alternative, inciuding construction and
construction engineering with 30% contingency, design engineering, and the cost of this study, is
~ $995,000 (rounded). SIDC is applying for 90% of the construction cost through the CWCB
Small Projeet Loan Program and will finance the remaining 10% of the construction cost through
~ member participation. SIDC's loan request, with the CWCB 1% Service Fee, is for the amount
of $904,960. The annual payment will be $43,800, assuming a 30-year loan at a blended interest
~ rate of 2.60%. Table ES-1 presents a summary of the requested project loan.
;~ (1RS ~ ES-1