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<br />Earthmoving <br /> <br />• An underground mine requires only minimal day-to-day earthmoving <br />operations at the surface. At the Schwartzwalder Mine, these are <br />ore loadout operations at the ore sorter, and the transfer by truck of <br />mine waste and sorter reject material to the waste dump. <br />Occasionally there is a need to install new equipment or to con- <br />duct such activities as sinking a borehole shaft. Projects of this <br />type are infrequent, not easily forecasted and require only minimal <br />earthmoving operations (i.e. leveling of the surface for placement <br />of necessary equipment). Any future operations of this nature not <br />included in this submittal will be reported to the Board along with <br />an amended reclamation plan and accompanying map. <br />Previous "one-time" earthmoving operations at the mine site include <br />the construction of a water treatment plant and the required settling ponds; <br />. site preparation for the construction of expanded office facilities, <br />ore sorter and spill containment facilities, and a helicopter landing <br />pad; construction of the evaporation ponds used for the pre-1972 water <br />treatment plant (see following discussion of water diversion and impound- <br />ment); and improvement of pre-existing access roads. <br />It should be noted that at no time in the past and at no time during <br />the remaining life of the mine will overburden be removed. <br />~Jater Diversion and Impoundment <br />The water diversion and impoundment facilities at the mine can best <br />be described in terms of the facilities that existed prior to Octoher, <br />1972 and those that have been constructed since that time. <br />Due to the nature of ground water conditions in the Idaho Springs <br />formation (see Exhibit G), a mine dewatering program has been and will <br />• <br />D-4 <br />