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TABLE 2-2 <br />MINE WATER BALANCE <br />WATER IN GALLONS/YR GALLONSIMIN <br />Production Equipment 26,181,300 49.81 <br />Ventilation Humidity 9,699,957 18.46 <br />Underground Storage of Thickener Water 3,500,000 6.66 <br />Incidental (pipe leaks, road watering, wash down) 2,618,130 4.98 <br />TOTAL 41,999,387 79.91 <br />WATER OUT <br />Coal Surface Moisture 17,824,527 33.91 <br />Ventilation Humidity 20,230,069 38.49 <br />Pumped Out 0 0 <br />TOTAL 38,054,596 72.40 <br />Water Left Underground 3,944,792 7.51 <br />Water pumped from B seam to D seam 7,358,400 14 <br />Inaoing Water The production equipment utilizes water for dust control and cuttings <br />removal in roof bolting. Water used by equipment is based on 317 shifts worked by <br />continuous miner sections and 229 shifts worked by the longwall. The continuous miner <br />sections use 100 gpm and operate about 3 hours per shift (the rest of the time is spent <br />moving, etc.). The longwall equipment uses 150 gpm of water for about 7 hours per shift. <br />The amount of water entering the mine as ventilation intake air humidity is based on <br />monthly mean temperatures from Table II.C-1 on page II.C-5 of the Mining Permit and the <br />yearly mean relative humidity of 56% found on page II.E-1 of the Mining Permit. The <br />absolute humidity, the actual amount of water in the air, is calculated from these data <br />using an average ventilation quantity of 455,906 cubic feet per minute. <br />Thickener water transferred underground for storage was estimated at 3,500,000 gallons <br />during the reporting period. This number is based on operational knowledge of the tons <br />washed and other factors such as the type of clays encountered, processing equipment <br />efficiencies, etc. <br />The smallest quantity of water entering the mine is the incidental category. This category <br />includes leakage from water lines, dust control watering in the haulage entries, and <br />9 <br />