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1 <br />t The Deserado Mine First Annual Hydrology Report (December 1985) contains baseline water <br />quality data for the bedrock zones except for wells in federal leases C-8424 and C-8425. <br />Baseline water quality data for these wells are given in the Thirteenth Annual Hydrology <br />Report (January 1999). <br />' 2.2.1.5 Mine Water Balance Table 2-3 shows the water balance for the Deserado Mine. No <br />water has been pumped from underground workings since January 10, 1996. Electric power <br />' to the pumps has been cut off due to the underground fire; the pumps have been removed. <br />During the 1996-1997 period, Deserado Mine started disposing the prep plant thickener water <br />' in the mined out area of the D-Seam (the first longwall district). This water would have been <br />othennrise discharged through Pond PP-2. A description of how these numbers are arrived at <br />follows. <br /> <br /> <br />CJ <br />1 <br /> <br /> <br /> <br /> <br />TABLE 2-3 <br />MINE WATER BALANCE <br />WATER IN GALLONS/YR GALLONS/MIN <br />Production Equipment 40,561,500 77.17 <br />Ventilation Humidity 9,574,300 18.22 <br />Underground Storage of Thickener Water 11,435,000 21.76 <br />Incidental (pipe leaks, road) watering, wash down 4,056,150 7.72 <br />TOTAL 65,626,950 124.86 <br />WATER OUT <br />Coal Surface Moisture 9,743,100 18.54 <br />Ventilation Humidity 19,968,000 37.99 <br />Pumped Out 0 0 <br />TOTAL 29,711,100 56.53 <br />Water Left Underground 35,915,850 68.33 <br />Ingoina Water The production equipment utilizes water for dust control and cuttings removal <br />' in roof bolting. Water used by equipment is based on 326 shifts worked by continuous miner <br />'sections and 242.5 shifts worked by the longwall. The continuous miner sections use 100 <br />' gpm and operate about 4 hours per shift (the rest of the time is spent moving, etc.). The <br />longwall equipment uses 250 gpm of water for about 9 hours per shift. <br /> <br />11 <br />