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" Require- <br />` Require- ment <br />Requirement ment complied Comment <br /> citation with ? (yes <br /> I nol <br />HH. Minimiza <br />tion 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 />U. Prevention of <br />material <br />Impacts to surface water outside permit area has been TDS <br />damage to the CDMG loading of surface streams, and does not impair water use. There <br />hydrologic regulation yes are no data indicating impacts to an aquifer outside the permit <br />balance 4.05.1(1) <br />outside the <br />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 aquifers at wells GF-7 and GF-1 1, <br /> and possibly the bedrock aquifer, 3`~ White sandstone at well <br />JJ. Agreement CDMG P-8. Although these are major impacts, they do not rise to the <br />of observed regulation 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 The cause of TDS loading in well P-8 is uncertain. Proximity <br />consequence infonnatio to A-pit suggests mining influence either from subsurface flow <br />s" (PHC) n current, from backfilled pit 1100 ft. upgradient, or from surface <br />projected in CDMG infiltration. The well is only 30 fee[ deep; i[ monitors sandstone <br />mining regulation beds that probably are permeable, and that may be in direct <br />permit 2.03.3(1) communication with the land surface. Well P-8 is 150 feet from <br /> a pond which has high inflows (East Pyeatt #1). High nitrate <br /> content of samples may indicate the well receives infiltration of <br /> surface water. <br />KK. Adequacy CDMG <br />of ground water regulation yes <br />monitoring 4.05.13(1) <br />ro ram <br />LL. Adequacy of CDMG <br />surface water regulation yes <br />monitoring 4.05.13(2) <br />ro ram <br />Page 7 <br />