Laserfiche WebLink
June 24, 1985 2 853-2038 <br />performed during this half-day site inspection, several unstable <br />areas were identified. <br />The landslide which has encroached upon the switching shed lies <br />within a larger area of landslides which appears to have been <br />quite active during the current spring season. The toe of the <br />landslide extended to approximately 6 feet above the base of the <br />switching shed along its rear (north) wall and had caused con- <br />siderable damage and buckling to the wall. The section of the <br />larger ("central") slide which is currently causing damage to the <br />switching shed extends as far as a minor access road to the north <br />of and approximately 35 feet higher in elevation than the founda- <br />tion of the switching shed; the larger "central" landslide ex- <br />tepds to an elevation of more than 70 feet above the foundation <br />of the switching shed at this location. <br />At the time of our inspection, surface water a~as being diverted <br />along the minor access road in a pipe. This diversion, which had <br />apparently been initiated several days before our inspection, was <br />limiting the amount of surface water entering the portion of the <br />slide in the immediate vicinity of the switching shed. This had <br />probably assisted in reducing deformatio^ rates in this area of <br />the slide, although the toe area of the landslide was still <br />saturated. <br />Other areas of the larger slide were still wet, with water seep- <br />ing from within the landslide at rates of up to approximately 20 <br />gallons per minute. A sump below the switching shed is collect- <br />ing and discharging water through a drain pipe at a rate esti- <br />mated visually to be approximately 20 gallons per minute. <br />A second, larger landslide lies to the east of the switching shed <br />landslide. The toe of this slide, which was seeping during our <br />Golder Associates <br />