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<br />1 <br />1 <br />I <br />I <br />I <br />I <br />1 <br />, 1 <br />1 <br />II <br />I <br />1 <br />I <br />I <br />1 <br />I <br />1 <br />I <br />I <br /> <br />Feasibility of the Repair <br />of the <br />Sanchez Reservoir Gate Tower Valves <br /> <br />PROJECT SPONSOR <br /> <br />The Sanchez Ditch and Reservoir Company is a Colorado Mutual Ditch Company and a Non- <br />profit Corporation. Articles of Incorporation and Bylaws are included in Appendix A. <br /> <br />The company's facilities, built about the turn of the century, are located in Costilla County, south <br />and west of the town of San Luis. They consist of Sanchez Reservoir (capacity 104,000 acre <br />feet), Stabilization Reservoir (capacity 300 acre feet), approximately 38 miles of concrete lined <br />ditch, approximately 15 miles of earthen ditch, approximately 23 miles of canal, and a diversion <br />structure at the inlet of Culebra Sanchez Canal. <br /> <br />PROJECT SERVICE AREA <br /> <br />The service area of the Sanchez Ditch and Reservoir company includes 13,424 acres of crop land <br />and 18,392 acres of farm land (farm land being that land used in rotation and generally not <br />irrigated due to lack of water). Sanchez Reservoir serves 86 land owners whose crops include <br />potatoes, wheat, barley, oats, alfalfa, spinach, and hay mixtures. The service area boundaries are <br />shown in Figure 1. <br /> <br />NEED FOR THE PROJECT <br /> <br />The Sanchez Ditch and Reservoir company is undertaking this project to continue to provide <br />irrigation water to its shareholders to irrigate their crops, <br /> <br />The Sanchez Reservoir Gate Tower was constructed in 1915. The gate tower is approximately 150 <br />feet in height with eight sets of 30-inch diameter valves located at different elevations in the <br />tower. Each set of valves consists of a steel thimble through the concrete tower wall with a sluice <br />gate mounted on the outside flange of the thimble and a cast iron wedge gate valve on the inside <br />flange of the thimble. Water exits the gate tower, through three 48-inch diameter wedge gate <br />valves, into a 10 'h foot high concrete outlet conduit which is approximately 600 feet in length. <br />All of the valves and gates are the original equipment installed in 1915. Figure 2 shows <br />photographs of the gate tower and valves. <br /> <br />Currently, the two sets of 30-inch diameter valves, located at the lowest elevation (USGS 8330 <br />feet) in the tower wall, have been covered with silt deposits and are inoperable. The remaining <br />six sets of 30-inch diameter valves are in various state of disrepair. <br /> <br />1 <br />