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. • . <br /> _ • .v �, <br /> Sierra Construction Serviccs, Inc, SHANNpNF�VUILSON,INC. <br /> , Attn: Mt. George Constandne <br /> Macrh 18, 1994 <br /> yag�;5 <br /> recommendadons below aze implemented. <br /> ► While the above slopes will prwide adequate factors of safety and rtasonable <br /> performance for cutc in the native soils (tills and outwash) and provide adequate <br /> factors of safety for the upsiope platcau developmcnt, thc acisting 1.SH:]V to <br /> 1.75H:1V slopcs in the fill and colluvial soils on the slope are marginally stable. <br /> Those slopes may experience surface ravelling and movement as induced by <br /> intense ra:nfall or seismic loading. Mavement in'these slopes is lilaely to <br /> resemble the acisting sur6cial failuts of the hillsidc slope located south of tha <br /> projecL Such potential surface movemenb are not anficipated ro affoct the <br /> proposed stn�ctuns on the upper piateau. These movements, hvativer, wouid <br /> likely msult in the accumnladon of debris at the toe of the eacisling slvpe, Such <br /> movements would requin local effort to iesrore and revegetate the slope and cl�:an <br /> �p debris at the toe. <br /> 3incerely, <br /> SHANNGN & WILSON, ING <br /> �� <br /> , .. •.� <br /> ��,i L '.7.'�� �S <br /> � , flY1. Qp��'�'�WR��`�•y� <br /> yltll➢,:/t�� 3't� �'�, �� �' <br /> � :��� <br /> ��p4�,Y wns p,Nc�ir� C, , t <br /> 4 k(` ''�'"_ <br /> . u.�. y 'r�1V.h1 7. .';.n .1 , ,v <br /> �•�+�7� '�J � ?OOS� � „�Q <br /> . � . � � ���p.J �� <br /> ., . ? �Tys�ONALti�' �')19-l1� <br /> • :;r.,;�.:,v,,;� 9t) , <br /> �.��\�V F.XMP,E! 11/l0/�� <br /> Ii1fV!RES Iq/7/RS'___ <br /> Gne�tory R. Pischer, Y.S. W. Paul Grant, P.E. <br /> Pr1t►cipal Enginat Vlce Pnsident <br /> MS:(iRF:WPG/ms <br /> Enclosuce: Figure 1 - Site and LxploraGon Plan <br /> Figure 'L - Recommended Slope Gradmg and Revegetation Plan <br /> , ` <br /> wc6s�-0�.oaoiwaes�•itanm <br /> W-6693-01 <br />