|
-fi- 4i
<br /> - ye ,y,s ati.- i x,v �. rS -r .�'.
<br /> _ Tgrr- 7 1-41
<br /> .�
<br /> .r
<br /> 'C' t
<br /> 5
<br /> '• � :a3 t .' '✓ _ i M - Al +zr- 'Y s-TP �_ t -'f F�"' S 4
<br /> ` - —K- -_ �. {. S
<br /> - "-
<br /> 19 February2002s � = € �'r -
<br /> AGE-NGProject No.'95 0173 r r � `� r i�
<br /> -
<br /> Yr
<br /> Page 2 of
<br /> �-'L 'F n._.5,,.+rt, �:3-- ,•���y,��.� _�.� �.; :d �'� map= .a ' � { -�''l�`',s_'�" - ?f*_�' M S --��w�-,�.
<br /> k L the adj acent borings shared the sanie d s gnat on as the original CPT boring 7 CPtT boring logs are
<br /> s > -.. . ..presented in Appendix'A,'a,sitepian depicting.boring locations'is�preserlted in Figure_2
<br /> 5
<br /> ✓t �' F
<br /> �:- r-• y f Cix.r.
<br /> T2 1 CPT LITHOLOGIC SOUNDINGS
<br /> '-. - ;
<br /> Soil_ borings CPT 1 and CPT-2A were advanced wertically to total depths of approximately 150 feet
<br /> - : bsg utilizing a,25. ton;tru1,7
<br /> ck-mounted CPT drill rig equipped with 2 inch diameter hollow stem rods, _., yt
<br /> soil-boring CP.T-2 was advanced to_122-feet bsg before ericauritering drilling refusal A hydraulic��� » ��
<br /> T .:_ram was-utilized to advance a cone penetrometer tip to total depth of eadh CPT boring�Soll
<br /> r parameters such as cone penetrometer'-tip xesistance,Aeevejhction, friction ratio (ratio�between, K sa
<br /> sleeve:friction and tip resistance) arid pore water pressure were continuously measured as tlie;corie-
<br /> enetrorneter-was 'advanced =to -depth A continuous boring log was-
<br /> pgenerated utilizing the : Y
<br /> ' -Ho ento ler Co. CPT coin filter ra am.'.Thc H_o ento lek-,U -coin uter ro ail arri utilized the CPT;'
<br /> g S. - .`. p .: P gz g p P .. � .
<br /> _ Soil Belaavioi Classification System (Robertson;_P K, Campanella;`R G, Gillespie D and Greig, J ,
<br /> _ f 1980, to:geiierate,a-general lithology type and display on CPT boring logs (S c App radix A) = {
<br /> Rinseate enerated as.a result of.,yarious_drillin activities.was-containerized ins rop erl, labeled: ,
<br /> 4 _ .g ._ g � pra Y . u ,
<br /> 4; ;} DOT-4pproved 55=gallon drums, an_d stored on site u an area lacking public access All sorl$boruigs
<br /> were backfilled by inserting hollow roci`s`to total depth of eacll boririgand backfilling with aEportland ,rL _
<br /> _ :. .cement grout mix
<br /> �.
<br /> -22---s' SOIL DISTRIBUTION = t f7.
<br /> �..
<br /> Based on the:fndings from 9611-1;64ngs .CPT.1 and CPT 2A geologic cross,section C C _was p
<br /> a constructed to depict general lithology lierieath the site(Figure 3) :Generally, pernieable, gravelly,
<br /> I
<br /> to.mediinwsand>la ers was
<br /> _encountered at de the between 38 and-64 feet bs 118 and 127 feet
<br /> _Y . p r g � ;
<br /> bsg and .138 feet bsg to 146:feet bsg Generally'less perrrieable,fine grained; silty clay aril clayey
<br /> `silt layers-were encountered at-depths between.l;5-and 25"feet bsgr 75 and_95 feet:bsg,-100 and
<br /> feet -b and lietween 128Tfeet and 134=feet :bsg. Variable lithoTogy including silty7firie sand and Y
<br /> 'sandy.silt were encountered;at all other depths.-CPT computer generated boring,logs areincluded E; �
<br /> Al
<br /> in Appendix ;
<br /> _ }
<br /> .:
<br /> T-_�a •;T-he-soil types encountered iii CPT-2 wee generally-similar.to those encountered in CPT 2A to a =� �- d
<br /> de th of.a roximatel 78°feet-bs a' which a' roximatel•.20 feet;of"sensitive fines" over l n k _
<br /> p pp Y , g pp Y Yi g
<br /> ,k s abase-22 feet
<br /> _of sand:arid gravelly_sand-were encountered irCPT 2, urilikethe sail types in any �, r
<br /> _ other,borin 's:AGE speculates tfie CPT=2''borin encountered'the-trace o-.ani abandoned well
<br /> partially filled with sand and-clays;iefusal-at 122-fe t:lisg inay have been dice to gravels;cobbles or . '��
<br /> k T . concrete filling the deeper portion of the former well trace - w �� -
<br /> _,
<br /> J� " ' Advanced GeoEnvironmental Inc �' `r
<br /> - --3a ! ..� z _ ' r - -.fin, ry F"£--Fry i'�. *�T ;,?-,� °' '4K�--x`.
<br /> 'f -' � f YS .� f �-"'t�u
<br /> 5"— .� - ,'� nr• .�-A r rte_ - -
<br /> r
<br />
|