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1 <br /> ' southern end of the site adjacent to the southern edge and outside of the site perimeter <br /> berm to be filled. This fill can be borrowed from other areas within the property. These <br /> areas could be lowered as low as possible without exposing seasonal or permanent <br /> groundwater. We recommend that future soil analyses be undertaken to analyze the soils <br /> within the potential wetland bank area. This area was mined and used as sedimentation <br /> ponds which were created from gravel washing operations. The materials that filled these <br /> sedimentation ponds does not contain the required nutrients for a growing medium. Soil <br /> ' enhancement would have to be undertaken in the form of fertilization if these areas are to <br /> be potential wetland banking sites. <br /> Additionally, it is recommended that the open water on the remainder of the site be <br /> limited to no more than the number of acres of open water that have been "grandfathered" <br /> in prior to the present owner's mining plans. Per the "Agreement Regarding Sand and <br /> Gravel Mining and Augmentation Plan Pertaining Thereto" between District 6 and <br /> Flatiron, approximately 14.2 surface acres of lakes existed on the site prior to 1981 and no <br /> ' augmentation will be required for this amount of exposed surface water. Creating 14.2 <br /> acres or less of open water would mean that no water rights would need to be committed <br /> ' to an augmentation plan for evaporative losses due to this open water condition. All <br /> water rights associated with this property, 30.2 shares of Dry Creek No. 2 Ditch, could be <br /> conunitted solely for on-site irrigation purposes or be leased as an income source for the <br /> University. Based upon all 30.2 shares of Dry Creek No.2 ditch water being available for <br /> irrigation and 5.47 acre feet per share of consumptive use (fully consumable) water this <br /> ' translates into a total of 165.2 acre feet of water available for irrigation on the site per <br /> year. Utilizing an irrigation consumptive use of 2.37 acre feet per acre per year, this would <br /> ' allow approximately 70 acres to be irrigated by the Dry Creek No. 2 shares. If the water <br /> rights are used for on-site irrigation, groundwater control measures (subsurface <br /> underdrains or surface swales) should be provided to minimize wetlands from formhng in <br /> developable areas. <br /> The seller's proposed reclamation plan calls for a major drainage channel to be located <br /> ' -27- <br />