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• as pointed out under Rule 2.05.6 (3), the total amount of water <br />impounded in impoundments is small as compared with total streamflow <br />in the Middle Creek floodplain. Thus, the impoundment of surface <br />water in impoundments is not expected to have an adverse impact on the <br />supply of irrigation water to the Middle Creek floodplain. The <br />sedimentation ponds will also function as flood protection facilities, <br />thus insuring against the loss of agriculturally useful lands by <br />flooding. In summary, no material damage to the Middle Creek <br />floodplain is anticipated considering the sediment control and <br />reclamation plans in this application. <br />The Fish Creek floodplain is flood-irrigated by diversion ditches. <br />Applicable criteria for determining material damage are potential TDS <br />concentration as compared with crop salt tolerance, potential surface <br />water availability measured against irrigation requirements, and <br />potential flooding as it impacts agricultural land use. All the <br />effects of future mining and mitigative factors discussed above for <br />• the Middle Creek floodplain apply to Fish Creek. That is, salt <br />loading from the effluent released by the sedimentation pond will not <br />result in TDS levels in excess of recommended standards. Thus, the <br />Fish Creek Tipple will not have adverse effects on the quantity or <br />quality of irregation water. Therefore, no material damage to the <br />Fish Creek floodplain is anticipated from the tipple and reclamation <br />operations. <br />Effectiveness of Reclamation <br />A full description of the reclamation plan and its effects on the <br />hydrologic balance is provided under Rules 2.05.4 and 2.05.6 (3). <br />Restoration of surface and ground water systems to baseline <br />conditions, including those sytems which supply possible alluvial <br />valley floors, is an integral part of the reclamation plan. Pertinent <br />aspects of the plan as to the effectiveness of reclamation in <br />minimizing any long-term impacts on possible alluvial valley floors <br />are discussed below. <br />• <br />2.06-30 <br />