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<br /> <br /> <br /> <br />1 <br /> <br />1 <br /> <br /> <br /> <br />TABLE 2-3 <br />MINE WATER BALANCE <br />WATER IN GALLONS/YEAR GALLONS/MINUTE <br />Production Equipment 20,425,200 38.86 <br />Ventilation Humidity 11,216,818 21.34 <br />Seeps 22,995,959 43.75 <br />Incidental (pipe leaks, road 4,058,110 7.72 <br />watering, washdown) <br />TOTAL 58,696,087 111.67 <br />WATER OUT <br />Coal Surface Moisture 7,941,156 15.11 <br />Ventilation Humidity 24,736,068 47.06 <br />Pumped Out 26,018,863 49.50 <br />TOTAL 58,696,087 111.67 <br />I~aolnq Water The production equipment utilizes water for dust crontrol and cuttings removal in roof <br />bolting. Water used by equipment is based on 523 shifts worked by continuous miner sections and <br />307 shifts worked by the longwall. The continuous miner sections use 80 gpm and operate about <br />3 hours per day (the rest of the time is spent moving, etc.). The longwall equipment uses 140 gpm <br />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 mean <br />temperatures from Figure II.C-2 on page II.C-9 of the Mining Permit and the yearly mean relative <br />' humidity of 56% found on page II.E-1 of the Mining Pennit. The absolute humidity, the actual <br />amount of water in the air, is calculated from these data and an average ventilation quantity of <br />525,000 cubic feet per minute. <br />' The amount of water entering the mine from the surrounding strata is partially estimated by <br />1 identifying all known seep areas and estimating the flow rate from each. There are very few <br />locations in the mine that produce water over the long term. Most wet areas encountered during <br /> <br />12 <br /> <br />