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Require- <br /> Require- ment <br />Requirement ment complied Comment <br /> citation with ? lyes <br /> / nol <br />X. Minimization <br />of <br />disturbance <br />to the CDMG <br />hydrologic regulation yes <br />balance 4.05.1(1) <br />within and <br />adjacent to <br />the permit <br />area <br />Y. Prevention of <br />material <br />damage to the <br />CDMG Impacts to surface water outside permit area has been TDS <br /> <br />hydrologic <br />regulation <br />Yes loading of surface streams, and does not impair water use. There <br /> <br />balance <br />4.05.1(1) are no data indicating impacts to an aquifer outside the pennit <br />outside the area. <br />ermit area <br /> The only apparent major hydrologic impacts at Trapper are <br /> TDS loading of the following waters: No Name Gulch stream <br /> flow, ground water in spoil backfill at wells GF-7 and GF-1 I, <br /> and possibly the bedrock aquifer, and the 3`~ White sandstone at <br />Z. Agreement CDMG well P-8. Although these are major impacts, they do not rise to <br />of observed regulation the level of material damage because use or potential use is not <br />hydrologic 2.05.6(2) impaired. <br />impacts with and The TDS increase in No Name Gulch was addressed in <br />"probable requireme DMG's review of Trapper's 1997 annual report (TR-78). <br />hydrologic nt to keep yes TDS loading of ground water in the 3`d White Sandstone in <br />consequence informatio well P-8 may be the result of suspected spoil leachate <br />s" (PHC) n current, discharging from A-pit 1100 ft. upgradient from the well. <br />projected in CDMG Surface infiltration may affect the well because the well is only <br />mining regulation 30 feet deep. The well monitors sandstone beds that probably <br />permit 2.03.3{1) are permeable, and that maybe in direct communication with <br /> the land surface. Well P-S is 150 feet from a pond which has <br /> high inflows (East Pyeatt #1). High nitrate content of samples <br /> may indicate the well receives infiltration of surface water. <br />AA. Adequacy CDMG <br />of ground water regulation yes <br />monitoring 4.05.13(1) <br />ro am <br />BB.Adequacy of CDMG <br />surface water regulation yes <br />monitoring 4.05.13(2) <br />ro am <br />Page 6 <br />