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• 1999 Annual Hydrologic Report <br />Page 6 <br />-Estimated equilibrium moisture of 4.5% <br />-Raw coal tons; 352,000 from the Roadside North Portal with an estimated <br />moisture of 7%. <br />-Measured clean coal tons of 172,000 with an estimated moisture of 9.1 <br />-Estimated refuse tons of 118,000 with an estimated moisture of 18% <br />The moisture added during mining calculates out to be 2.1 million gallons and the <br />moisture added during cleaning calculates out to be 4.0 million gallons. <br />Water was used for as the primary means of dust control on the surface and <br />underground roads during the Year. Magnesium chloride and calcium chloride were <br />used on roads, both surface and underground, to reduce the manpower requirements <br />for keeping the roads damp. Between the two mines approximately 3600 gallons of <br />water per day, 2 days per week were used. Usage on the surtace roads was <br />approximately 8,000 gallons of water per day, 5 days per week, 75% of the Year. <br />Water for the surface roads was taken from an approved point of diversion in the <br />Highline canal. <br />A summary of the estimated consumptive use of water is as follows: <br />Total Gallons/ Gallons/ <br />Source Gallons raw ton clean ton <br />Domestic <br />Surface Facilities 686,000 1.9 4.0 <br />Preparation Plant 5,450,000 15.5 31.7 <br />Mine <br />Mining 2,100,000 6.0 12.2 <br />Preparation Plant 4,000,000 11.4 23.3 <br />Underground Roads 374,400 1.1 2.2 <br />Highline Canal <br />Surface Roads 1.560.000 4.4 9.1 <br />TOTAL 14,170,400 40.3 82.5 <br />