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<br />2) use as stemming material for blast holes. The size and well-sorted nature of the Pad 3 <br />material make it well suited for stemming blast holes. This material will, after being <br />subject to moderate heat from the blasting, become either ore or waste, depending on <br />where it is used inside the Mine area. Sediment controls for areas to be blasted are those <br />provided by road configurations and by the fractured nature of the blasted rock. Not <br />only does very little runoff occur from these areas due to the fact they are fractured by <br />the blast, but the material remains in place for only a few days after blasting, at most. <br />Of course the waste or overburden will be hauled to the overburden storage areas where <br />sediment control is provided by temporary measures such as leaky dams, and by grading <br />and revegetation. Surface-water runoff from the ore is ultimately contained by the leach <br />pad and is contained at intermediate locations by control of spillage, surface-water <br />diversion, and settling of solids through straw bales, silt fences, grading, and <br />revegetation. <br />3) road development around the Cresson Leach Pad allowing for proper pad loading. <br />Sediment controls are those normally used for all haul roads along with additional <br />sediment control structures below the leach pad. <br />The material to be used is no different geologically than that which is being mined and, <br />according to the results of the D. I. contact tests, is benign with a slightly higher pH than might <br />be generated by non-leached rock as a result of the extensive lime addition. <br />D.I. contact tests on the Pad 3 material produced comparable results to that for Pad 2. The tests <br />for Pad 3 differed from that for Pad 2 only in that the material was allowed to remain in contact <br />with the D.I. water for 80 hours instead of 72 hours and metals were analyzed as dissolved as <br />opposed to potentially dissolved. Descriptions of the Pad 3 D.I. contact tests including sampling <br />locations and results are attached. <br />Thank you for your continued assistance. <br />Y~ <br />E. Hardaway <br />ger Environmental Affairs <br />enc: <br />FILE: PAD3.LTR <br />