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Battermann <br /> Geotechn:cal � �t1 [G �L-OOR <br /> ConsultinK Ju1y 3S. 200� <br /> f'11( f'mjcct No. 060;R <br /> �ir_ Kohc�t I�ahcnun <br /> :i 19 Wrtmore Avrnuc. Apl. Ii <br /> I:�crrtt. WA 9R_01 <br /> Subjcct I�dJcndutn to SuhSur�:�rr F:�lon+uun .U�d <br /> Gcu�cchnical l'.npirernn_� Fc��n <br /> I lalvc�on Pro�xny <br /> ibx� RroadNav <br /> f{veren. \!'ashington <br /> Ihe tollmving aJdendum Ielter is a supplcmer.; to i.ur Subsurfacc Fxploration. Ga�lugic <br /> Ha�ards. xnd (i�t�technical LnEin�Ynn� IZcp��n for thc I lalvcnon Pro�rt}• dat�Yi Octobcr 4. <br /> `p,1(.. \��here in con(lict. the rrcommenJattons in this Icucr su�xr�dr the recommcnelations <br /> c�miaincJ m :ha� rc�rt. <br /> I ii. origmal plan lor dcv^.lopmcnt of z singlc L•unily residcncc on this sitc rcyuimd thc <br /> c�mstnzctiun c�f a �0 to 25 'Wt h:gh rctaining wall in ordcr to providc a building pad hieh enough <br /> on the pni�em that an acc:ss dnve�tiay otTof 13mad��ay A�enuc w�s feasible. In the <br /> intcrvcn�n� montl,�, it is uur undcrstanding�hat you h:nc had mcc�ings with both your ncighbon <br /> to the north �n a wiih the Cit} af I�:�'cntt. 'Ihe curreni pm�sai is to devclop a building pad hy <br /> construction oCa structural till that will alxi bcncfit arid cstcnd onto thc nc�ch��rs propr.m�. <br /> Prnm a gcutcxhnical enginccnng st�tnd��in', this is a much prcfcm� altcmaucc than <br /> .:�,nstrurliun al thc larcc wall. Ba�tcrmaim (icatcchnical Consulting, pllc is in tiill sup��n o(thc <br /> crading pian �c'� lill Qic old cm�ional ra�ine belticen the two pru(xrties with swctur.�l fill. 1 hc <br /> rcrummcndatiuns in this addcndiu�i Icucr addrcss thc gcot�t hnical cngincxring considcr.ninnti <br /> nrccsvsry In ci�mplc�c :hc Pm��srd �;r.idin�. <br /> I hr :ristin�, fili xiils and loosc. slo�• colluvial uiils wiil nc�Y1 to hc rcmuvc:� from thc:ut:+s la <br /> rc«•��r strucfural liil. llir r�on-or+!��ic �nnian�el�tlrex matcnals may lx rc-us�Y1 in thc ncw <br /> �n�ctur;d till I hc suh�;radi• soils shall Ix in a rnedium dcnu condition pnor tn placing ncw fill. <br /> fhr c�i5i:n�• culvcr. undcr ISruad���} Avcnuc .hoi!Id �cxtcndcd �yond thc plann�Y1 toc uf thr <br /> nc�� savttunl fill bodv. l'ne ne�v culverl should be txddeJ on a laycr of pca g1-avcl anJ then <br /> n;a� be IiIIcJ o�cr durine the placement and cumpactio�oCthe ncw fill. 7hc culven should t+c <br /> ,�� iu Jischc+rg: on � ruck spiash pad compnsid of minimu�r, 12 inch diamcter yuarry spall mck <br /> :I;at is cmhcddcd ir.ro nativc suh�radc u� Ihc top sur�acc uf tlre rock is at existing gradc. Thc <br /> nx k pad shoulu ht n minimum of 4 Icc� �vidc and 6 fcct ione. <br /> i onstruchun nf thc nea' fill should st:ut at thc tix ol tlie slopc and ��ork up thc slopc. Thc fill <br /> ;hali hc placrd hori�ontally. Fill x�ils should bc plac� in lifts �wt lo cxcccd i0 inches thick. <br /> Pach liti sh:�ll i�c cnmpactccl to a minimum of 95 pcn:cnt cf thc modificd Prcxtor valuc of thc till <br /> soil (lcns!t}� teslim.;should h^ perforr.�eci to venfi suitable compaction of�he 611 wil. As the <br /> liGC, PLLC 1C267 205'" Avenue NE Woalinv�lle, WA 98077 (425) 273-5062 � � <br /> �,�� <br />