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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />The Selected Project <br /> <br />The District plans to construct alternative 2), or Referendum (8) as approved on <br /> <br /> <br />December 2, 1997, This will consist of two (2) lines of sheet piling driven near the location <br /> <br /> <br />of the existing structure, Support pilings will be driven into alluvial sand to form a <br /> <br /> <br />foundation, A concrete drop spillway dam will be constructed on said foundation, consisting <br />of a four foot (4 ft,) high wall and a sixteen foot (16 ft,) flat slab jump basin. Also included <br />will be a thirty foot (30 ft,) pneumatic crest gate in the dam and in the headgate structure <br />to the Harmony No, 1 Ditch, The dam will <llso have an eight foot (8 ft,) wide radial gate to <br />sluice sand past the structure, Head walls and wing walls at each end of the dam will <br />complete the structure, Preliminary site pl,m drawings, and cross-section of the proposed <br />structure are included in Appendix 8, Sines alternative 1) was not approved by the District, <br />there are no funds available for the replacement of the West Diversion Dam structure <br />which was damaged in flooding last year. The district plans to construct a sand dam to <br />control the flow of water in the south channel. The elevation of the sand dam will be set so <br />that it will divert water flow into the north channel under normal river conditions. During <br />flooding or high flow conditions the sand dam will allow for flow through the south channel <br />to prevent inundation of the new diversion structure and headgate, <br /> <br />6 <br />