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—� o�iioizoo�i_,>_o� r•n� a2s azi aaaa <br />F_AX <br />MEMORA.NDUM <br />, 'Po: T�Ir.SaceJAbtal�i <br />Sauud Invetlmenls � <br />Prum: ICevin RobrrL+ <br />�rr:Ran nssoci,�T�s <br />� TERRA ASSOC{ATES, Inc. <br />Consul�anu in Qadtthmcai ngiirc�inF. CeotogY <br />r�� <br />Cnvim-.mmia� Esr,h Sn!nrns <br />7'nz tiumber: RG9-6795 <br />��; 6-IU-05 <br />Projcct`1umMr: T-5777 <br />SuUjae Preliminyry IYndlugs nnJ Soil ParamMers P:oject Namo: Naterford Lnne <br />Dcar Sucd: <br />� oo�ioo7 <br />Aa re;ryestcJ, wz uave coemle�ed a auLeu<<ac< �nvesugadoo ul lim site. Ouf Conhccn�ng geotechnicel rrport is in pm�e68, end a'i1� <br />cantain Jruiled dacrip:ians of.aite canditions mic p*ovide edditionul yeotectmmzl rccor.arcWacions. Tcis memo prexnu aur <br />initial �rt:din6s and p«limina7+ni1 dcsign pma:at�re for project dc+ip� and eonctcuctio�. <br />Six vackhoc lcsl pits anC Cour 1'a�d du�+ les[ pia ecrt advmttd nt Ihc site nn Jur.c 7 and Iunc d, 2005. DcaR conieq ot:Lc tesl pil <br />logs end sile plan shuu�g iht ��e� P�� �ocatiom we attacLcd. T1x tcct pirs vcncrelly showcd a 1a)'_c of m�voi'.'dutC, o� <br />undacumnuteA NI o�edyius wen•.hc¢d m�d nnwe�thered Lotizone of pJaciol till soils. Whe:n uv:u at the surfice, ropeoil i�ickrws=es <br />nuged L-om 4 �0 12 iochcv. UnJocm:����d viry vand flls we:e found lo n depth oC 7.5 :ea[ at TP•3 (demntiun vaul[ locnaon), nIW <br />tn depths uf 1.5 &et to 3 fiet in 7'I'-5, 77'!i, �1 CP % aid HTP-9. A twodoo: thicA luyer uC erganic dehris xas Counet at Ihe nese of <br />ihc fill laya in TF'-3. Buried toir'oil was also ecen bweeth Ihe fill in H9'P�7 and I1Ti'•8. A:1 �est pi6 were tertwmted with gLuiel <br />tlll ¢o ls. Lght, pe¢Y.ed pnw�du•a;er uas notcd a1 a depth uf 2 feee in 7P-2. <br />7n the site's urs;cm half, wi:h 1tr exeeption of We ��iciniry of 71'3, stnpping dep�Ls ta�ging &om 6 incha to 2.5 feN shacld he <br />eap¢teA Io cxpose ur�anic-.`ree aubgedca. Neaf TP•3, �cava:ion a�d rertnvni ot the !�I and baeal le�cr uC logs end hrnnches lo <br />Lepiku oC o{�(�mx. 8 to 9 fcet uill bc neccsmp� to ecrablisL swtable sub�zxdef. .4: die aitc'e u-�.vLLri poA�on, strippiag dcpths on IF.e <br />ordu of 4 to 6 inches shoald be cspectcS In mmove �udace �upsoil. In building attee, we �eco:wcr.c exavanng and rem.o�•ing thc <br />f.11 and 6uricd taryuil (uund m QTk'-% end �ITP-R (enc�vatfon Jepc'u oC al�,ae = fceQ und restoring smde �vi�h stm:tmel Gll <br />Fa.�emenu :my be s�tPpnrtod ou Ihe evsling fi'�I providcA siibyfadc[ a�e p:operly p*�po+cei O'��r lebomtary resu!'s i�:ca;e some oC <br />thc c�isting fills :u� b< re-used at d�e eile a� e:mc�ure1611. <br />'I i;c native glaeial ull soil, re suitable for suppon of de�cntion vanit cprad :oaeu6s ��^'nT�°"ed far e rt'axirtvT alloWablo beanng <br />ap,cily �afue oC S,ODO pfE For shon-;enu Imdq such �c icimile, u onr-IbirA incrcue in Ctis aIlo�r61c cepacity can be cscJ. I'o <br />ruard aganut hyd+oslatic ptesscm devdopnxnl, veull wall �a:vge �5t he irstolled. Tlus dainage shotild be :ons;nio!ed ot a <br />dc� ih �h�l is eyual ro o� bcluw ttc c�nd s�om�e levcl ins:de �4e vaute Wa�l dreiimgo can censut of pr.Cabrica�cd drair.zge penel3, <br />su:h ea MimJrmn G1Wti, a3nched ta the walls and :�yuauli<ally conaected to e slz-inch Aianict p<dowted �t�aiw•e. 71'e <br />dminpipe ehould te envelnped in one eubic foot nf nnn half ilrch �cs dr=in rock, nnd irwialled at m elevatlor. that wil: pro�ide <br />pesitive discherp,c. 1V:Q� wall 6ac�dl pla::d nnd tompncicd ns iaonmcndcd acd uu'.a�ge ptCpody :a�:zlln3, «e m[C'Mxnd <br />de.cipninK +r•e w�allv m ecppun an at-rut <anh prtssum of JS pe(eq�icelent Ouid pe<ss,u<?lus e v.iiform Ism�al p¢ssure of l00 paf <br />If xall dreiiuP.c is not pmvideti, il¢ vnult wall should be desi�ncd lo supp�rt �n cquiveleni P.uid piecacC Of BS p<:. ���lwut <br />d:dinagq e?li3 nn �he �oull slwu!� alsu lr <crsid�ed n vonit Aesi�. <br />iCecin Y. Rohettv. P.L. <br />Scninr Etyy:ecr <br />cc; Dlr. Slep6en DHson; Ilarmcrn Xc <br />Associ•Ia, FnX (3(0) ROS-9734 <br />I?S:5 N':Ilcn's Road, Su�,�c 101, Kirkland, H�sehinyKon 9fi0'4 PF.one �o. (4251821-7977 Fax (425) 87I-41?4 <br />