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20 <br />' i We expect that the foundations of the conveyor will have <br /> to reach sound and intact bedrock; the depth to it is not known, <br />' but it may reach several tens of ,feet. Piles or drilled piers <br /> may comprise the best foundation method for the conveyor. <br />' We also believe that apart from this foundation method, it <br /> will be necessary to stabilize a strip of ,soils along the <br />' conveyor to prevent any deformations or slides of surficial <br /> soils. The stabilization could probably be achieved with a <br />' drainage system which would effectively, lower the ground water <br /> surface below the soil-rock contact. A detailed foundation in- <br /> vestigation which includes drilling at the locations of indi- <br /> vidual conveyor supports will be required prior to the conveyor <br />' design. <br />' A-re_fu_se_pile (or waste rock storage) has been tentatively <br />l <br />d <br />l <br />d fl <br />b <br />h <br />di <br />l <br />h <br />h <br /> arge an <br />p <br />anne <br />on a <br />at <br />imme <br />ate <br />y sout <br />enc <br />of t <br />e <br /> landslide area (elevation about 6,640 feet and higher). The north <br />' border of the pile would be located close to the distinct crest <br /> which forms the boundary between the landslide area and the bench <br />' above it. <br />' We are concerned with the stability of the area close to <br /> this crest; it is very probable that landslides in the Mount <br />' Gunnison area have been developing as failures of bench crests <br /> of this type. Any loading of the area above the crests increases <br />' the risk of a new failure. <br /> I <br />For this reason, we feel that it is important to avoid load- <br />' ~~ ing of the bench part close to this crest. As there are no data <br /> available on subsurface conditions of this part of the property, <br />' I it is difficult to specify a safe distance of the refuse pile toz <br /> ~ from the crest. We feel that for preliminary purposes a distance <br />' ~ of 150 feet is appropriate; it is based on morphologic obser- <br /> <br /> oc..naw caaswNO, Nc <br />