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August I8. 20(1�1 <br />Mr. .lim 'I honws <br />ISrlvcdcrc Luls 32 und 33 <br />I.�A J�,b N�,. dA088 <br />I'agc 9 <br />hanks, il'rcyuircd. shntdd nol hc slccrcr Ihan2-1211:1 V. l hc suilti:md Ihc st�ihilily ul'cul sluprs <br />�huulJ hc �ihscrvcd and vcrilird hy:i gcotcchnicnl cnginccr during csca��ation. <br />i'crnwncnt lill cmhankmcnls rcyuircJ lu support struclural ur iral7ic luads shuidJ bc cunsU'ucicd <br />�vilh cotnp.icicJ slruclural lill placcd ovcr pruof-rullcd undislunc�d, nalivc. ��cry sli�l� Io hard silt <br />ar dcnsc I•'spernncc ti:md drposits �dtcr Ihc surficial unsuilablc soils are slrippcd. I'crm:uunt lill <br />lo hc �laccd on slupcs slccper Ihau I S'%� gradc should bc relnincd ztructurally. Sloping gruunJ <br />uvcr �vhich lill is tu hc placcd should bc brnchcJ with �•ctlir.il sleps no morc Ihan 4 Iccl high <br />allcr strippin� uf unsuilahlc surlici;d soils. l hc slopc c,l' permancnl lill cmbankmcnl should uol <br />hc stcc��cr lhan 21I:I V. Upon cum��lclion. Ihc sloping facc of permancnl lill cmbnnknunls <br />shnuld hc thuruughly cutnpac�cd tu a nun-yiclJing slalc �rilh :i huc-pack. <br />'I'hc aho��c rccoiumcndcd cut :md lill slopcs :irc undcr thc assum�iliun Ih:d gruunJ�vatcr sccp�igc <br />�cill n�,l hc cncuun!crcd dwing a�nslruction. If grouncl�valcr sccpagc is cncotuilcrcd. �hr <br />cunslructiun shuuld hc inunrdialcly h:dlcd and Ihc slupc slahilit}' rc-cvaluatcd. 'I hc slopcs ma� <br />ha�c lu bc Il�it�rncd and othcr nuasures takcn lu stahiliz� thc slopcs. tiur�i�cc runol�l'should n�,i <br />hc :illu�crd �o Ilu�v uncnnu'uIIcJ uvcr Ihc lop uf cul ur lill slopcs. I'cnn.incnl cut slopcs ur lill <br />rmh�mkmcnls shuuld hc srrdcJ nnd vcgrla�cd as suon as possihlc lirr cri,siun pralcclion anJ <br />lung-Irrm si,ihiliiy. ;�n�l �hould hc cu�crcd �cith pl�islic shccls. as myuirc:l, to protccl Ihcm lirnn <br />crusiun I,� slurnncalcr unlil Ihc � rgclatiun is fully rs�ahlishrd. <br />ti'1'Itll("�'(IHAI. I�II.I. <br />titruclural lill is thc lill ��Icicrd undrr ruad��;i� �iavcmcnls, limtings. slubs-un-gra�c. �ind bchinJ <br />rclaining �tialis ��hcre il suppurl IuaJs. Slruclural lill shuulJ cunsist uf cican soils frcc of organic <br />,ind o�hrr �Iclrtcriuus suhsl;incrs :md �cith �iarlicles nul largrr Ihan liiur inchcs. SU'uclur:�l lill <br />�h��ulJ h;i�r ,i m��i�turr runirnl �� ilhin ��nc ��rrcrnt af ils iqilimwu muisturc cunlrnt al Ihc limc uf <br />LIU �C ASSOCIA'I'I;ti, INC. <br />�z� <br />