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1 <br /> ' LEFT HAND DITCH CO.—LEFT HAND VALLEY RES. SPILLWAY/OUTLET REHAB. <br /> 3 <br /> ` I_ -- <br /> 005P - <br /> The Concrete Stilling Basin and Outlet Pipe at the Bottom of the RCC Spillway <br /> Project Description <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 /> Project Data <br /> Sponsor: Left Hand Ditch Company, Inc. County: Boulder River: Left Hand Creek <br /> Terms of Loan: $560,000.00 @ 4.0% for 30 yrs. Substantial Completion Date: Jan. 13, 1999 <br /> Design Engineer: Rocky Mountain Consultants, Inc. —Longmont, Colorado <br /> ' Construction Contractor: Gears, Inc. —Crested Butte, Colorado <br /> Design Criteria: 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 /> Annual Volume of Water Delivered by the Project: 1,624 ac.ft. <br /> 1 <br /> 1 <br />