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<br /> - 9 - <br /> i <br /> year for exactly the same reasons. <br /> I II This observation is of crucial importance for the proposed <br />i <br />I <br />l <br />d <br /> construct <br />on. <br />t indicates that s <br />i <br />ing would be triggered in <br /> III, the future when unsupported cuts are excavated, or fills <br />' I placed on steep slopes which are frequent in the landslide <br /> III area. These cuts or fills or other structures might be tern- <br />' I; porarilq stable during a dry season such as the fall or winter, <br />I <br /> but they would become unstable during the spring season when <br />' the combination of snow melt and rain apparently causes the <br />i~ <br /> saturation of certain areas. <br /> ~; There is probably only one method available to eliminate <br /> I' <br />I~ potential stability problems within the landslide area: to <br /> I' eliminate the possibility of the saturation within the areas <br /> ~ of the proposed construction. The saturation could be averted <br />' ~,; by careful drainage of zones which are critical for the stab- <br /> ~ ility of individual structures. Drainage comprises a powerful <br />' ~ tool which can significantly increase the stability. <br /> i <br />;, We feel that if ground water conditions are improved at <br /> ,, locations of individual structures and facilities, so that <br /> '„ ground water levels are lowered to acceptable depths and the <br />' .' potential of their increase is eliminated, the proposed con- <br /> I~ struction can be safely realized. As will be discussed later, <br />' (~ ground water should be lowered to depths of 10 feet or more. <br />' ~I In the following parts of this report, more specifics <br />j will be discussed for individual structures located within <br />i the landslides area. <br />1 ~ <br />i <br /> <br /> <br /> <br />