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- 8 - <br />accurate data on the ground water fluctuation. <br />3.0 CONSTRUCTION CONDITIONS AND DESIGN RECOMMENDATIONS <br />3.1 GENERAL APPROACH <br />It was concluded during our previous phases of work that <br />the existence of the landslides at the site will influence the <br />construction; from a geotechnical point of view it. would be <br />preferable to relocate the proposed surficial structures and <br />facilities outside the area of landslides. As this is apparent- <br />ly not feasible, it is necessary to design and construct the <br />proposed facilities so that the old slide deformations are not <br />renewed or new slides or deformations are not initiated. <br />As recommended earlier in our previous report, placement <br />of large fills or excavating large cuts at improper locations <br />should be avoided; drainage patterns should not be deteriorated; <br />high cuts or cuts at critical locations should be supported. <br />Foundations of structures within the slide area should be <br />designed so that they do not decrease the stability. <br />As has become evident during the previous phases of our in- <br />vestigation, ground water conditions have an important impact <br />on the stability of the area. It is very probable that most of <br />the landslides which are present in the area developed during the <br />periods when the ground water levels were high and soils and <br />rocks were saturated. As discussed earlier in this report, <br />experience from last spring confirms this conclusion: the steep <br />slope close to the proposed mine bench became saturated and a <br />slide developed as a result of a very minor excavation for one <br />of the drilling pads. Several other slides documented in our <br />Progress Report developed on other locations during the last <br />oeo~roRO cowui..o...c <br />