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Mining Operations 70,000 gallons <br />Coal Preparation 573,000 <br />Surface Facilities 648,000 <br />Total Water Consumed ~ <br />IF~ACTS <br />The total tonnage of TDS discharged into the Colorado River as mine discharge <br />during 1987 was 97 tons or 0.0056% of the total TDS at Station 455. The maximum <br />impact from mine discharge in 1987 occurred during the first week in October <br />1986. During that week, the average flow and conductivity at Station 955 was <br />3626 CFS and 413 ~unhos/cm. The 359.8 gpm discharged from the mine that week <br />would have increased the conductivity of the river by 0.20 µmhos/cm. <br />There was no detectable impact of this operation on Cottonwood or Rapid Creeks <br />this year and none is expected due to protective pillars under the creeks. <br />Diverting mine water to abandoned areas in Lhe mine reduced the impact on the <br />Colorado River. Cameo Mine discharge will resume in 1988 but discharge from <br />the Roadside Mine is not expected in 1988. <br /> <br />- 5 - <br />