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2.04.7 Hydrology Description <br />simply not economically or technically practicable to install down gradient <br />monitoring wells at these depths. <br />It is highly unlikely the public will use the deep bedrock groundwater <br />located north of the proposed mine plan area. It is simply too expensive to <br />install a domestic or livestock well at such extreme depths. The poor <br />water quality would also discourage public use. The lack of deep bedrock <br />groundwater monitoring data is somewhat mitigated by the highly unlikely <br />public use of the water. <br />Information on bedrock water quality is available from the quality of water <br />that flows into the mine. Inflow water quality is available from the first <br />quarter 2004, first quarter 2006, first and third quarters of 2007 and fourth <br />quarter 2012 during which the underground mine discharge water was <br />sampled (McClane Canyon Mine AHRs). The water is slightly basic with <br />average pH values of 8.2. Average total dissolved solids concentration <br />was 1,914 mg/L. The water is rich in bicarbonate and concentrations are <br />as high as 1,297 mg/L. Based on this data the discharge water is a <br />sodium -magnesium -bicarbonate -sulfate type. <br />Following is a discussion of the water rights and proposed protection <br />measures if any. The water rights are shown on Figure 1.1-3a. <br />Map Code No. 1 - Young Stockpond No.1 Located along East Salt Creek. <br />Outside the area that could be affected by mining. No protection required. <br />Map Code No. 2 - Young Stockpond No.2 Located along East Salt Creek. <br />Outside the area that could be affected by mining. No protection required. <br />Map Code No. 3 - Young Stockpond No.3 Located along East Salt Creek. <br />Outside the area that could be affected by mining. No protection required. <br />Map Code No. 4 - McClane Ditch Located outside the surface facilities, <br />where run-off from the site should not affect the water quality. No <br />protection required. <br />Map Code No. 5 - # 11 Enterprises, Domestic/Stock Well - #254049 <br />Located west of East Salt Creek and a area that could not be affected by <br />PR -02 2.04-21 03/13 <br />