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C <br />11 <br />Page I& of `LZ <br />Written by: T. Boardman Date: 14 Sept 1999 Reviewed by: M , 'Date: <br />Client: Allied Waste Project: Forward Landfill Project/Proposal No.: WS0264 Task No <br />Seismic Condition: <br />The value of seismic coefficient, k5 is estimated considering factor of safety, FS = 1. <br />(Note: seismic coefficient = yield acceleration, i.e. k5 = ky ) <br />The seismic coefficient is calculated only for the long-term condition, i.e. it has been assumed that <br />seismicity and seepage will not occur simultaneously. <br />Therefore, equation (1) can be modified to provide an expression for k5, as follows: <br />c(y ZcoS2 )6 <br />l + tan — tan�3 <br />ks l+tano tan# <br />Equation (6) <br />Reference: <br />Matasovic, N., "Selection of Method for Seismic Slope Stability Analyses", Proceedings of Second <br />International Conference on Recent Advances in Geotechnical Engineering and Soil Dynamics, <br />St. Louis, Missouri, Paper No. 7.20, 1991, pp. 1057-1062. <br />