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<br />Executive Summary <br />This study examines the feasibility of various measures to rehabilitate Lake Arrowhead Dam <br />for the Lake Arrowhead Water Association (Company). This study has been prepared in <br />conformance with requirements for funding ofthe Colorado Water Conservation Board (CWCB) and <br />the dam safety regulations of the Colorado State Engineer's Office (SEO). The information <br />presented is this study is based, in part, on information presented in the CWCB memorandum, <br />prepared by J ohn Van Sciver, dated September 18,2002. This study examines the feasibility of non- <br />structural and structural alternatives; and demonstrates the technical, financial, environmental, and <br />institutional feasibility of rehabilitating the existing dam. The structural alternatives include <br />rehabilitating the failed outlet pipe and installing a new toe drain system to control and monitor <br />seepage to meet SEO guidelines. <br /> <br />The recommended alternatives include the replacement of the failed 24-inch CMP outlet with <br />a concrete encased steel pipe discharging into a USBR impact basin. The toe drains are located <br />along the downstream toe of the dam and then discharge along side the impact basin. <br /> <br />Total capital expenses for the recommended project alternative, including construction and <br />construction engineering with 20 percent contingency, design engineering, and the cost of this study, <br />is $404,000. The Company is applying for 75 percent of the construction cost through the CWCB <br />Small Project Loan Program and will finance the remaining 25 percent of the construction cost <br />through member participation. The Company's loan request is for the amount of$298,000, which is <br />equal to 75% of the total $404,000, less $5,000 for the feasibility study grant. The annual payment <br />will be $17,760, assuming a 30-year loan at a rate of 4.25% <br /> <br />The design is presently under review by the SEO. Construction is scheduled to begin in <br />February 2004 with completion by May 2004. <br /> <br />Lake Arrowhead Dam Rehabilitation Feasibility Study <br /> <br />11 <br /> <br />13DVLE <br />