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much as possible, into adjacent drainages which drain to the Animas River. The <br />diversions were constructed according to Section 4.05 of the Performance Standazds to <br />prevent the erosion of, or adverse effects to, adjacent areas. <br />There aze no users of water from the strata in the mining operation. Consequently, the <br />use of water in the coal seams and fractures will not adversely impact any known users. <br />The proposed mining operation will use water for dust suppression, prepazation facilities <br />and domestic/sanitary uses. It is estimated that the total water will include 20 acre- <br />feet/yeaz for dust suppression, five acre-feet/yeaz for sanitary facilities, and 50 acre- <br />feet/yeaz for other uses. <br />It is estimated that the dust suppression water will be drawn from the pit or sediment <br />structures and that the remainder of the water will be pumped from deep well(s) for which <br />permits have been approved. Furthermore, the Animas River under appropriated such <br />that excess water is available for multiple uses to the applicant. OEI is currently <br />implementing a plan to develop it available water resources through appropriate <br />submittals to the State Engineer and the District Water Court. <br />Protection of the Hydrologic Balance <br />The mining and reclamation plan for the Carbon Junction Mine has minimized the <br />impacts to the prevailing hydrologic balance within and adjacent to the permit azea in the <br />following ways. <br />Surface Water <br />Surface water entering the permit azea is either diverted azound and away from disturbed <br />azeas, or is passed into the sediment control system where it ultimately discharges from a <br />sediment pond designed and constructed in accordance with CDMG requirements or <br />evaporates from the site. Open pits do not exhibit drainage characteristics which allow <br />the ponding of water on the coal seam, which could potentially lead to acidification of <br />surface water. Surface water is directed to the surface water drainage system, ultimately <br />leading to the sediment ponds. The permanently reclaimed spoils area has a designed <br />underdrain system which controls drainage, and passes any water reaching the underdrain <br />to the sediment pond below. <br />Acidic drainage was observed from a spring in the vicinity of the South Pit in the late <br />1990's. This spring is a natural spring which eminates from strata unaffected by coal <br />mining. This surface drainage is mitigated in two ways; first, the drainage is controlled <br />by the sediment control system, and is not able to leave the site untreated, second, the <br />natural conditions of the earth materials within the ditch neutralize the acidic natural of <br />the surface water within several yazds of the appearance of the surface water. <br />TR08, TRl l (v 1.0) 5-47 Revised 9/97, 8/02 <br />