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-zl- <br /> <br />It was apparently expected that the geological conditions <br />along the road would generally be more <br />encountered during the construction of <br />was assumed that most of the road cuts <br />least partly, in sound rock. Our docu~ <br />that rock will probably be encountered <br />cuts. It should be expected that mast <br />excavated in unconsolidated sediments, <br />previous section. <br />4.3 RECOMb1ENDED CUT SLOPES <br />favorable than those <br />the existing road. It <br />would be excavated, at <br />nentation shows, however, <br />only in two or three <br />cuts will still be <br />as described in the <br />Based on the evaluation of the geologic and geotechnical <br />• conditions of the area, on all observations of the behavior <br />of the existing gravel road cuts and on our experience gained <br />from highway cuts at other locations in West Colorado and other <br />parts of the country, we have prepared a set of recommendations <br />on the cut slopes of the proposed improved haul road. It should <br />be emphasized that our recommendations are in no way excessively <br />conservative. They would probably not be acceptable for a state <br />highway or for a road of greater importance. If our recommenda- <br />tions are accepted, the cuts will probably be stable for the <br />lifetime of the mine; sloughing will have to be expected and <br />maintenance of the road will be required. It cannot be entirely <br />ruled out that major slides may occur during the lifetime of the <br />• .project. As discussed earlier, we feel that such a risk is <br />acceptable. <br />