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• 1999 Annual Hydrologic Report <br />Page 7 <br />Impacts <br />The total dissolved solids for the mine discharges calculated with monthly TDS and <br />monthly flow for the Year come out to be 64.2 tons for 001, 1194.6 tons for 002 and <br />537.9 tons for 004 fora total of tons. The following table presents the total TDS <br />discharged from the mine during the three prior years. <br />Outfalls 001, 002 & 004 <br />WaterYear 1996 1997 1998 1997 <br />TDS (Tons) 1163.7 1805.5 2214 1797 <br />The 1999 TDS discharge represents 0.13% of the 1.4 million tons calculated to be <br />carried by the River. Long term discharge from the Roadside North will cease upon <br />completion of mining. At the Roadside South, water is expected to perpetually <br />discharge from outfalls 001 and 002. <br />There was no detectable effect of mining on flows in Cottonwood and Rapid Creeks. <br />Mining projections in the Roadside South have been put on hold. An increase in <br />inflows is expected as mining progress west and north in the Roadside North Portal, but <br />is not expected to significantly influence the flow in the Creeks. <br />Consumptive water use continued to be closely tied to production and is expected to <br />show similar trends in the future. <br />