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Requirement <br />Requirement Requirement complied Comment <br /> citation with T (yes I <br /> no <br />P. Minimizatio <br />n of disturbance The disturbance to the hydrologic balance within and adjacent to the permit area caused by <br />to the hydrologic CDMG regulation mining and reclamation at the Foidel Creek Mine is the minimum that can be expected <br />balance within 4.OS.1(1) yeS from an underground mining operation at this location. Use of best management practices <br />and adjacent to indicates minimization of disturbance to the hydrologic balance. <br />the ermit area <br /> Surjuce water - No mine water was discharged at site 11 S this water year. In the past, <br /> mine pumping into Fish Creek at site 11 S increased electroconductivity (EC) in <br /> the creek by about 700 µmhos/cm, causing Fish Creek to occasionally reach the <br /> 1 S00 µmhos/cm material damage suspect level for irrigation water in the Fish <br /> Creek alluvial valley floor (A VF). The pumping also caused Trout Creek, below <br />Q. Prevention Fish Creek, to occasionally reach the 1000 µmhos/cm material damage suspect <br />of material level for ircigation water in the Trout Creek AVF. The high EC levels on Fish and <br />damage to the CDMG regulation Trout Creek probably are too infrequent to cause a 3% reduction in a farm's <br />hydrologic 4.OS.1(1) yeS production (the material damage threshold). During most of the summer the EC <br />balance outside level in those streams is much less than the material damage level .The report's <br />the permit area graph of Trout Creek's TDS below all mining (site 1005) shows there is no <br /> apparent upward Tong-term trend in TDS. Foidel Creek frequently exceeds the <br /> 2000 µmhos/cm below the mine, but premining data indicates this is a natural <br /> occurrence. <br /> Ground water - No material dame a has occurced as discussed in item N above. <br />R. Agreement <br />of observed CDMG regulation <br />hydrologic 2.OS.6(2) and <br />impacts with requirement to <br />"probable keep information yes <br />hydrologic current, CDMG <br />consequences" regulation <br />(PHC)projected 2.03.3(1) <br />in mining permit <br />S. Adequacy <br />of ground water CDMG regulation <br /> <br />monitoring <br />4.OS.13(1) yeS <br />ro ram <br />Page 4 <br />