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<br />3. Construct 1 recharge well, 1 augmentation well, a <br />pipeline, and 23 recharge ponds to generate the needed <br />augmentation credits: <br /> <br />This alternative would use the recharge well and existing <br />ditch systems to fill the recharge ponds during the winter <br />months when there is generally not a call on the river. <br />Water from the ponds would return to the river by <br />underground percolation during the summer time while the OWW <br />has depletions that need to be offset with augmentation <br />water. Water could also be returned to the river more <br />quickly by pumping the augmentation well to the pipeline <br />during the most severe drought situation. The cost of this <br />alternative is $1,153,000 and it is the preferred <br />alternative. <br /> <br />The Selected Project <br /> <br />OWW plans to construct alternative #3. Features of this <br />alternative are as follows: <br /> <br />1. Drill a recharge well within 100 feet of the South Platte <br />River. Well capacity will be in the range of 4.5 and 9 cfs, <br />depending on subsurface conditions. <br /> <br />2. Drill an augmentation well 5 miles south of the South Platte <br />River. Well capacity will be about 6.7 cfs. <br /> <br />3. Construct a 24-inch pipeline, 5 miles in length, between the <br />recharge well and the augmentation well. <br /> <br />4. Construct 23 new recharge ponds with small earthen dams, on <br />non-irrigated farm ground. Three of the ponds will be <br />constructed off the new pipeline. The remaining ponds will <br />be constructed off three different ditch systems (the Bijou, <br />Riverside, and Weldon Valley Ditches) . <br /> <br />5. Engineering, surveying, easements, well site land purchase, <br />contingency, and miscellaneous costs will be included. <br /> <br />The general locations of these features are shown in Appendix B. <br /> <br />Feasibility Study <br />OWW Aug Project <br />October 2003 <br /> <br />4 <br />