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• 4.3.3 Waste Stream <br />The only waste that will be accepted other than the present <br />wood, paper and scrap from the mine is a 50-50 mixture of <br />flyash and bottom ash from the Coor's Brewery Power plant. <br /><See chemical analysis and leachete tests in appendix). <br />Quantities will not exceed 100 cubic yards per day. No ash or <br />other waste from any other source will be accepted. The mine <br />operates 14 hours per day, seven days a week so that no one <br />can enter the property without being monitored. Security <br />guards are employed during any special times, such es, <br />holidays and group vacation periods. <br />There are no stream laid deposits holding a stream within 2 <br />miles of the ash disposal, life-of-mine boundary, See Appendix <br />U-1. Ennis Draw which lies immediately on the east of the <br />boundary does not hold a stream. Ennis Draw is a relatively <br />broad, flat, topographic low in which no stream channel is _ <br />defined. No evidence of a presently existing perennial, <br />eQhemeral, or intermittent stream in Ennis Draw has been <br />observed. There is subsurface evidence that a stream once <br />existed in the draw, but these deposits have been covered over <br />by the existing wind blown deposits. As shown in Map 4.6.3 <br />• (e), the subsurface water system of Ennis Draw has been <br />conducted ad7ec?nt to the drew. Th=re has been none, nor is <br />there anticipated to be, a significant impact to the <br />ground-water levels in this area: <br />Box Elder Creek is located about 3 miles west of the proposed <br />ash disposal site. At this time, however, it is not <br />anticipated that ash disposal will progress far enough west to <br />effect ground-water flow to box Elder Creek. <br />As explained in the report of hydrologic investigations, the <br />quality of post ash disposal activities on the ground-water is <br />nut expected to differ substantially from that which nuw <br />exists. (See Water Quality Data, Section 4.5.7, Water Quality <br />and Appendix B, Ash test results). Therefore, neither the <br />quantity nor quality of waters associated with Box Elder Creek <br />or Ennis Draw are expected to be affected. In any case, the <br />discharge through the life-of-mine area is very small. The <br />ground-water discharge through the area was previously <br />estimated to 5.4 ac-ft/yr or only 3 gpm, however, based on <br />observations of the active pit area, this discharge rote <br />through the area may be high. <br />• -7- <br />