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<br />correct information is placed with the proper permit when the <br />review of the report from another permit and associated Division <br />statements/requirements are wrapped into a second permit's review. <br />If it is the Division's intent to conduct future AHR reviews in <br />this manner, we would appreciate the opportunity to discuss the <br />issue further. We appreciate the Division's understanding of our <br />position on this matter. <br />Groundwater <br />Inflows to the mine appear to be within the projections outlined in <br />the probable hydrologic consequences section of the Foidel Creek <br />permit. No unanticipated drawdown or dewatering is evident at this <br />time. Also, at this time no degradation of groundwater quality is <br />evident downgradient of mining activities. Recharge characterists <br />do not currently exhibit detectable changes. <br />Surface Water <br />The discharge of underground mine water has changed the surface <br />water ion balance in Fish and Foidel Creeks. No SAR problems are <br />noted currently. Changes in the ion balance are currently not a <br />concern due to the current and projected use of surface water <br />primarily as irrigation water and livestock water. <br />The increase in total dissolved solids does pose a threat to <br />irrigation waters, particularly downstream on lower Trout Creek. <br />Data collected in 1992 does show a 47 percent increase in salt load <br />during low flow (July-September) to lower Trout Creek (below Fish <br />confluence). However, due to the lack of a monitoring station <br />below the Fish Creek confluence, actual data is not currently <br />available to allow quantitative assessment and comparison to <br />predicted loading. <br />The Division's calculations are as follows: <br />Assumptions: <br />1. Low flow period is July-September. <br />2. 1992 data input. <br />3. Mine 2 springs, Mine 3, and Pond E tipple discharge is not <br />included. <br />Pond A Pond D Site 115 <br />(.0027)(.592 Q)(3000 mgjl) + (.305 Q)(3134 mg/1)(.0027) + .20 Q)(2619 <br />mg/1)(.0027) <br />4.79 + 2.58 + 1.41 <br />8.78 tons/day <br />