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<br /> 88
<br /> Project
<br /> ..je....?.. M......a
<br /> ,. ? Environmental
<br /> !....1 1'•i.i. t f l l c'r l t:'".a.. _ ...}i... E l"':.=.'i:l!"'''..... Inc.
<br /> Modesto, Ca. 95355 6729
<br /> Dear Biliq
<br /> As r; ' your e{ c :, , . am writing tL : letter ` . i` . ' l the
<br /> soils geology and I_t cii1+t:::.?. li..{i:.} ground water _?s.!fl?:::: at the ait'.i..;h Hayes
<br /> a t...,t_!',. Son,
<br /> ...:t...: ':. Inc. site. ..[• is located 10765 t!•:!. Clover Road
<br /> in E i . ,..i.::'•:'„ California, in 1 a..;•»:1n t.:....r.'.{'._ .!.?-1 County.
<br /> :...,:... ', :�:. Ir.. .i ; : this project
<br /> ..,.; i i:::::...�.. began ... i
<br /> , :...: ...! i:..:4•. a..1 involvement .- 1. i.3.,... !...!... ... ...
<br /> November of 1987. f:..! .. that time, we acted ......., .... subcontractor to
<br /> i h t_!: 1...:c:t.,.. Environmental Systems. You.... tea•.•_..rti'• .... !..i ..!. ...{ii{::: employee
<br /> acting as project manager. ?._'._!.i,.. contribution ..... this particular
<br /> project consisted {::,; location of t h e monitoring ?..{.. ... .f.::.. :yusing
<br /> tripod hlt..tl....!;..et” brunton compass:...::_.... aili..! tape survey
<br /> of
<br /> borings while : holes were being : ` . . le{ supervision
<br /> monitor , nit construction n { compilation j3i1 F . a } . t ; _
<br /> : , of
<br /> the site.e '+I+x.,i E casingelevations I:;l;:are surveyed b R. B. Welty
<br /> .,s..:i..} Modesto engineering firm..
<br /> -
<br /> f'L€v' present i_. a"..,..:i..... ,..y on ...?.E::J project :L:... as a subcontractor to
<br /> your firm, A -? Environmental Consultants, Inc.
<br /> Eof Modesto,
<br /> iH ' tfCa—
<br /> The
<br /> .
<br /> h_ :1 ! : is underlain I! ; -recent basin ,; pt ' : t . . : ir{ _ from
<br /> .L.i....... :...:..a,... joaquin
<br /> 1 ,.= r..r,. System.
<br /> ..?.... These
<br /> •i-!... ::as - soils deposited during
<br /> .!!1,...' ,..1...
<br /> flood stages of major streams in areas between natural stream
<br /> levees and alluvial fans,.
<br /> The specific soils geologyisrevealed in the:.... S.':.} ..,...: ...'F' MW
<br /> 3
<br /> and which were logged
<br /> l...f, our
<br /> ..:,1 personnel . The
<br /> site is
<br /> underlain._t,.:, "...o c.!. {..:?:::.'p,..:S of t:a.b{:!..!.t ....... feet i..t'? .... light bi,..{.:}!ai{'1 clay
<br /> %ri',. {._ t
<br /> variable i ^ ? econtent ` medium f . asya . ti ' , : Cl /Ml i , Y
<br /> silt content i?... this unit
<br /> ..i f...,:t.t increases towards :..t?.:.. northeast.
<br /> was logged .:::t»:: predominately Cl in
<br /> MW, and
<br /> ,!..., as predominately Cl /Ml
<br /> in
<br /> . MW
<br /> t 2 .. ., 3. ....... consistency of
<br /> the
<br /> e .. t varies from
<br /> per
<br /> stiff to very stiff .
<br /> .t.
<br />
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