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Requirement <br />Requirement <br />citation <br />Require - <br />ment <br />complied <br />with? <br />(yes / no) <br />Comment <br />I. Content of pond <br />reports <br />CDRMS <br />regulation <br />4.05.9 <br />yes <br />J. Sampling <br />frequency of <br />ground water <br />monitoring wells <br />Table 61 of <br />CDRMS <br />mining <br />permit C -80- <br />006 <br />yes <br />K. Parameters to be <br />analyzed in <br />ground water <br />samples <br />Table 61 of <br />CDRMS <br />mining <br />permit C -80- <br />006 <br />yes <br />L. Basic Standards <br />for Ground Water <br />CWQCC <br />regulations <br />41.4 and 41.5 <br />yes <br />DRMS previously concluded that the Marr Mine does not <br />have the potential to negatively impact ground water and, <br />therefore, a ground water point of compliance is not <br />warranted (Memo to Hydrology file, dated 6/13/07). For the <br />loadout, the determination was based on the loadout's lack of <br />deep excavations and the lack of activities that could <br />generate leachate or toxic substances. (The majority of the <br />mine portion of the permit area has achieved final bond <br />release. Ground water monitoring in that area ceased in <br />2007, following approval of TR -23.) <br />Mean 2010 concentrations of dissolved Manganese (Mn) <br />were slightly elevated in both alluvial wells at the loadout, <br />AP -1 and AP -2. However, the Agricultural Standards in <br />Regulation 41 for Mn, 0.2 mg/L, is only applicable in waters <br />applied to acidic soils. Also, the concentrations upgradient <br />from the site (in AP -1) are very similar to those down <br />gradient (in AP -2). Finally, the loadout lacks deep <br />excavations and activities that could generate leachate or <br />toxic substances, and it is unlikely that the elevated <br />concentrations are mining related. <br />M. Restoration of <br />ground water <br />recharge to <br />approximate <br />premining rate <br />CDRMS <br />regulation <br />4.05.11(3) <br />yes <br />Activities at the loadout have not significantly disrupted <br />aquifers or used ground water. <br />Page 2 <br />