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29 <br />• 1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />• <br />• <br />9 <br />10 <br />11 <br />12 <br />13 <br />14 <br />15 <br />16 <br />17 <br />18 <br />19 <br />20 <br />21 <br />22 <br />23 <br />24 <br />25 <br />pit area as well as potential off-site impacts to <br />groundwater use which may or may not exist in <br />adjacent areas. <br />To minimize the impacts to the Rito <br />Seco, Battle Mountain Resources has proposed <br />a sediment control system which I've kind of outlined <br />a little bit here previously. They have diversions <br />around most of the major structures, have sediment <br />traps adjacent to the Rito Seco, beneath each of the <br />(major facilities as well as in the other drainage <br />(basin. <br />To minimize potential Rito Seco and <br />Culebra depletion into the west pit, the company has <br />proposed that a low permeability grout curtain be <br />constructed. <br />That would be constructed in the area <br />where the Rito Seco is closest to the pit area. <br />This is also near where the road is closest, about <br />a hundred foot. <br />It's felt that potential inflows <br />would be via the groundwater -- the alluvia.i <br />colluvial groundwater system. <br />The proposal is to, as necessary, <br />excavate the alluvial material down into thee more <br />competent underlying Santa Fe conglomerate and <br />