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Require- <br /> Require- ment <br />Requirement ment complied Comment <br /> citation with ? (yes <br /> / no <br />O. Content of CDMG <br />pond reports regulation yes <br /> 4.05.6(13) <br />P. Sampling Table <br />frequency of 2.04.7-1 <br /> <br />ground water of CDMG <br />yes <br />monitoring mining <br />wells Permit C- <br /> 81-008 <br />Q. Para- <br />meters Table <br />to be 2.04.7-1 <br />analyze of CDMG <br />d in mining yes <br />ground permit C- <br />water 81-008 <br />sam les <br /> The Burro Canyon Formation, approximately 60 feet beneath <br /> the mined sequence, may be the only aquifer that has been or <br /> will be a drilling target for local water supply wells. The Butro <br /> Canyon Formation is not believed to be in hydraulic <br /> communication with the mined stratigraphic sequence, and <br />R. Basic CWQCC therefore is not expected to be affected by mining. <br />Standards regulation Prior to mining, naturally high concentrations of sodium and <br />for Ground s yes sulfate rendered the water in the mining sequence unusable for <br /> <br />Water 41.4 and <br />domestic or irrigation purposes. The water is marginally usable <br /> 41.5 for livestock watering; spoil leachate will probably be no less <br /> usable. <br /> The downgradient monitoring wells, GW-N44,45,46 and <br /> GW-N 16, 17, 18, indicate current compliance with the Basic <br /> Standards if com Hance oints were established at these wells. <br /> Mine pit excavations disrupt the potentiometric surface. The <br />S. Restoration PHC predicts that after reclamation, there will be nearly full <br />of ground recovery of the potentiometric surface outside the pits and <br />water CDMG partial recovery of the potentiometric surface inside backfilled <br />recharge to regulation yes pits. Spoil springs may reduce ground water recharge by <br />approximate 4.05.11(3) diverting some ground water flow to surface flow, but New <br />premining Horizon's expected total aggregate spoil spring discharge of less <br />rate than I cfs will be too small to reduce ground water recharge <br /> below the a roximate reminin rate. <br />T. Prevention of <br />adverse <br />impacts to CDMG The PHC predicts no adverse impacts, and monitoring data <br />ground water regulation yes indicate no adverse impacts. <br />systems 4.05.11 <br />outside the <br />ermit area <br />Page 3 <br />