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1100318 R0T0 0811 JRW1 41 <br />significance of this result is that the December 2, 2008 landslide would not have occurred <br />without the presence of the clay bed. Therefore, Exponent concludes that the cause of the <br />Pikeview Landslide is the presence of a heretofore unknown weak clay layer in the upper <br />portion of the Sawatch Formation. <br /> <br />reviewing agencies and municipalities for static conditions varies between 1.3 and 1.5. A Factor of Safety of 4 <br />far exceeds minimum acceptable Factors of Safety.