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<br />. <br /> <br />. <br /> <br />LEFT HAND DITCH CO. - LEFT HAND VALLEY RES. SPILL W AY/OUTLET REHAB. <br /> <br /> <br />The Concrete Stilling Basin and Outlet Pipe at the Bottom of the RCC Spillway <br /> <br />Proiect Description <br /> <br />This project is the result of the State Engineer's order to increase the spillway capacity of <br />the Left Hand Valley Reservoir in order to comply with dam safety rules and regulations regarding <br />downstream structures. The project includes,the replacement of the current spillway with a larger <br />roller compacted concrete (RCC) spillway and concrete stilling basin. Rocky Mountain <br />Consultants of Longmont, CO completed the permitting process, design engineering and <br />preparation of construction contract documents. The construction contract was awarded to Gears, <br />Inc. of Crested Butte, CO., commenced September 1, 1998 and was completed in January 1999. <br /> <br />Proiect Data <br /> <br />Sponsor: Left Hand Ditch Company, Inc. County: Boulder <br /> <br />River: Left Hand Creek <br /> <br />Terms of Loan: $560,000.00 @4.0% for 30 yrs. <br /> <br />Substantial Completion Date: Jan. 13, 1999 <br /> <br />Design Engineer: Rocky Mountain Consultants, Inc. - Longmont, Colorado <br /> <br />Construction Contractor: Gears, Inc. - Crested Butte, Colorado <br /> <br />Design Criteria: <br /> <br />Dam Height = 51.25 ft. Dam Crest Elev. = 5,359.5 ft. <br />Spillway Crest Elev. = 5,351.5 ft. Reservoir Capacity = 2,814 ac.ft. <br />Spillway Type = Stepped Roller Compacted Concrete <br /> <br />. Annual Volume of Water Delivered by the Project: 1,624 ac.ft. <br />