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1 <br />1 <br /> <br /> <br />t <br /> <br /> <br /> <br />1 <br />1 <br />1 <br />TABLE 2-3 <br />MINE WATER BALANCE <br />WATER IN GALLONS/YEAR GALLONS/MINUTE <br />Production Equipment 22,689,000 43.17 <br />Ventilation Humidity 10,682,684 20.32 <br />Seeps 22,800,841 43.38 <br />Incidental (pipe leaks, road 4,014,241 7.64 <br />watering, washdown) <br />TOTAL 60,186,766 114.51 <br />WATER OUT <br />Coal Surface Moisture 7,740,106 14.73 <br />Ventilation Humidity 23,558,160 44.82 <br />Pumped Out 28,888,500 54.96 <br />TOTAL 60,186,766 114.51 <br />' inp Water The production equipment utilizes water for dust control and cuttings removal in <br />roof bolting. Water used by equipment is based on 549 shifts worked by continuous miner <br />sections and 352 shifts worked by the longwall. The continuous miner sections use 80 gpm and <br />' operate about 3 hours per day (the rest of the time is spent moving, etc.). The longwall <br />equipment uses 140 gpm of water and operated 1760 hours during the reporting period. <br />' The amount of water entering the mine as ventilation intake air humidity is based on monthly <br />mean temperatures from Figure II.C-2 on page II.C-9 of the Mining Permit and the yearly mean <br />' relative humidity of 569'o found on page II.E-1 of the Mining Permit. The absolute humidity, the <br />actual amount of water in the air, is calculated from these data and an average ventilation <br />' quantity of 500,000 cubic feet per minute. <br />The amount of water entering the mine from the surrounding strata was determined by identifying <br />' all known seep areas and estimating the tlow rate from each. There are very few locations in the <br />1 <br />12 <br /> <br />