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CONSUMPTIVE WATER USE <br /> Water removed from the Purgatoire River for use in the mines <br /> is dependant upon the coal production rate. Usage rates for <br /> consumptive uses are as follows : <br /> Continuous Miner 5.85 gallons/raw ton <br /> Longwall 17 .72 gallons/raw ton <br /> Prep Plant 20 . 10 gallons/raw ton <br /> During 1988 , no coal was produced at the New Elk Mine , <br /> 723 , 000 tons were produced at the Golden Eagle Mine , and 200 ,000 tons <br /> were processed through the prep plant . All coal was produced by <br /> continuous miner. Using the above consumptive rates , 13 .0 acre-feet <br /> were used for mining at the Golden Eagle and 12. 3 acre-feet were used <br /> in the prep plant . Metering of water taken at the New Elk Mine for <br /> domestic use was calculated at 0. 5 acre-feet for 1988 . Total water <br /> consumed from the Purgatoire during 1988 is calculated at 25.8 <br /> acre-feet . <br /> All domestic water utilized at the Golden Eagle Mine is <br /> supplies by the City of Trinidad ' s water line . Total water use <br /> estimate is based on employment of 150 people and 100 gallons per day <br /> per person. Daily water use would be 15, 000 gallons per operating day. <br /> All of this water is passed through the domestic system, treated in the <br /> sewage treatment plant and discharged to the Purgatoire system. <br /> Assuming that the mine operates 260 days per year and that 10 percent <br /> of this water is consumed , water gain to the Purgatoire would be <br /> approximately 11 acre-feet per year. <br /> Water produced during mining is pumped to the surface , <br /> clarified and discharged to the Purgatoire. Estimated water inflow <br /> ( see Appendix 3 ) is 123 gallons per minute at the New Elk and 160 .0 <br /> -60- <br />