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SUSSURFACS SOIL CONDITIONS
<br />The sails encounzered tn the eKcava,,"lors
<br />MY fine Sand buried debris IcOse, porous
<br />the toryinal sciii consists of a ]'cu'se rj�,re:r
<br />Below ;list wyer in the upper 4 W; 5 feet.
<br />deposit nypical ttthe
<br />a re a .
<br />Laboratory test performed an retrieveci sarjp�'�as j,rjqcate r,,
<br />densities wo be high with varying je,
<br />increased sliahth with depth. 0tt,1z1,"t3; the density
<br />s jan"emert if' the OPPec SOMS, in
<br />Este, woa:d A expacto-�dt of t=ho�'
<br />ct-ure.
<br />propo-s(�,d st?ruc
<br />!)us to the granular nature of the soils, lziboza-,cry -eni:frjg
<br />rensults exhib-"ID:eo' a vary 1'o,"ex'pansiovepu�ential' El is 0.
<br />Corrosion potential should be evaluated after init,a_ q ratijnq i.'s
<br />COXIM& No free groundwater was encountered in the
<br />and none was expected. excavabon
<br />'�j
<br />observed fron. 5 to e w t�h sl"des was
<br />_o sting ground surface,
<br />GEOLOGIC CONDITIONS
<br />The 'site does not I fit Within --an
<br />Zone. This nearest acziVF~ fault is tju,
<br />zones located a ' pproximately 15 miles to the r0l-zhCast. A maxir(I
<br />c".'redible eartltn�p,ake of magnitude, 6-5,7a the oper a ug
<br />sciale, has ceen Calculated for the sys:ewr,
<br />This Could correspond
<br />to a peak ground acceleration AGA) Of =pp roxima tool 1, 0.554 g,
<br />should the epicencor of qualoe be IoCzlt%!d neir the n
<br />,�rVation Ground, 1-1��,,tjon
<br />the Callfoxiiia Departmsu,j* cl, �CCMsw 1�sf, g
<br />Inrerpoiator (2008) with a return period 2% in 50 years,
<br />Bowever, the probability of the i.
<br />al'cele'ri�c
<br />atn at, the i t a
<br />should be similar CO S`cutberl'l C81t'ftrcla as a whole,
<br />The sails were found to be Me to medim-t z7. ale ino-s, e u r ' a I
<br />deposits, a a 1. '
<br />Studies have shewn Vat these ocfujitiolls have a h V
<br />probability of lin[Lefa=Wn, ND liquefal,
<br />� t a o rm(�3J
<br />�,, '�,,�'Udy W,15 perf
<br />as Part Of this investigation. The damage from shaklag by an
<br />event on near -by 2.,aas. t d WmHar on this IM70perty
<br />to any other property in 018 lutmediace .arra Whic","A is cc.nstructed
<br />on similar gruunu
<br />C3C Sal s-TJic valce�""
<br />A probabilistic seismic hazard C):!
<br />he a ,,.".C' .-tam
<br />perfor-Ted in accordance with the 2G,13 CBf SCCt.'On 18C2,2,7,
<br />These PrObabilISIM; Sai=lo hazard maps azd data files were
<br />joint3y prepared by we United States Geb]'., \r ! (Us
<br />oSo r' e', GS
<br />and Califarnia GeMogi zalSurvey (CGS) an'd can be found maiy
<br />be found at the CGS internet site. Annual ground s.ha?ing
<br />LnLe'15.' ies at the site MY be substan-ial.1y higlrer -',r lower
<br />based op. vatiable a such as Ve noar sz'u?,'cr oiiroe�'.""'Iulvity e'-ffact'
<br />depths and consistency ot the ea,,_:_�
<br />c ma 'a
<br />I _a, topography,
<br />,
<br />structures, Wrection of Me fault roptcre and seismic
<br />wave reflection and/or refraction, and attcrluazion rates of thf
<br />seismic energy
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