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kccp all hca�c eun.Uuclion cyuipmcnt a��;iy Irutn Ihc tup of rct;�iniuc �valls a di;tancc cqual �o <br /> 'i thc hcigM of Ihc �ealL or at kasi i �ict.�chich c�cr is grca�cr. <br /> 2. Struc�ural lill in nc�c p;ncmcnt and harJsr,ipc arcas. includint uiilit} trcnch backlill. shuuld hc <br /> comp;icicJ �u a� lcasl 90 perccnt of thc \tl)U csiitualrJ in accurdancc�citi, AST\1 D I Si7.c�ccp� <br /> Ihal ihe upper 2 fect ol'till hdo�e final suher;ide sliould be comp;�cted tu ai lea,l 9> percent of Ihc <br /> \-1DD. sc� Pigin�c G. <br /> 3. Slructural lill placcd bclo�v tluur.lubs and liwndatiuus should bc compnctcd to 95 perccni uf thc <br /> �iDl)cslimalcd in accordancc �cilh AST\i U 1$57. <br /> a. Suvctural till placcd as crushcd surlacing hasc coursc bdo�v pa�cmcuts should hc compacicd to <br /> 95 p�rccnl ul'Ihc �1U�)cstimatcd in accordancc ���i�h AST�I D 1557. <br /> 5. Non-sln�ctural lill, sucli as lill placrd in I�mdtic;ipc arc;is. should bc comp;ic�cd to a� Ir,isl <br /> Y� perccni ullhc \1DD cslimalcd in accardanx �+iih AS"I'N U I i57. In arc;is inlcnJcd fiir futurr <br /> dccclupmcnt. ❑ I11LIll'f tICLfCI' ul' comp;icliun slwuld hc considcrcJ �o rcduce thc sctUcmcnt <br /> potcmial ol'Ihc till soils. <br /> �\'calhcr Considcra�ions. I)i>uuhancc o( nc;n' sw'facc soils should bc c�pccicd if c:uth�curk i. <br /> complc�cd durin� perioJs uf �ccl �cc.uhcr. Durin_ dq' ��'calhcr Ihc soils �eill (I)bc Icss susccp�ihlc ta <br /> dislurh;mca. (�l pm��idc bcucr suppuri liir consuuciion cquipmcnL and l3)bc marc likcly tu mcct ihr <br /> rcquircd comp,iclion ciilcria. <br /> Thc �ccl �crnhcr scason �cncrally hcgins in Oclubcr and coniinuc. ihruugli \tay in ��cstcrn \1'ashinelun: <br /> ho�ccrcr. periuds ul� �cct �cc;ithcr in;ry uccur durinp ;my mnmh ul ihc ycac Por canh��ork aciiciiic. <br /> Jm ing�ccl �ccathcr, �rc rccummcnd tha: ihc li�llu�cing stcps hr Uikrn: <br /> • l�lic ground surfacc in ;md around Ihc ��ork :u'ca should hc slopcd su Ihal surfacc �cnlcr is dirccicJ <br /> a�t�ny frutn thc �curl. ;u'r:i. Thv ground wrl�icc should bc grndcd w Ih.0 arcns of pondcd �calcr do <br /> nol dccclnp. �icastu'cs shuuld bc Inkcn by thc c!utu:ic�:n'lu prcccnt surl:icc ��'alcr I'ivm cnllccling <br /> in c�cac:iliuns and trcndics. \icasmrs shauld I�c implcmc�„rd lo rcmucc swtacc �calcr Irum thc <br /> �curk arca. <br /> • liarlh�curk activilics should nut I;ikc placc dm ing periodc u(nwdcr;uc te hc;rvy prceipitalion. <br /> • Slu�xti �cilh e�pused soilti sltould he co�ered �cilh pl;islic tihceling. <br /> • �i�hc cuntractor :hinild uikc ncres.;iry mr,isures to prc��cni ��n-,itc suils :md suils lo bc uscd as lill <br /> Ilom brcuming �cct nr unuahlr. l'hcsc mcasurc, m;ry indudc thc usc of pl�ntic shcc�ing. sumps <br /> ��ith �mmps. ;m�l grading. 'I'hc siir .oil, sh� uld nai Ur Irfi muuinp;ictcd :md cspascd to moisuuc. <br /> ticalin� �hc stniicial suils h� rollin_ �cilh a .muolh-drunt rallcr prior tu periods uf prceipila;iun <br /> �cill hclp rcducr Ih� cxlcnt Ihal Ihr,c .nils htcumc�ccl nr un,�a'�Ic. <br /> • Ihc cunuacti�r +huuld ru�rr ;ill suil stuckpiles Ihat �cill bc iiscd as :Iructural lill ���ith p�astic <br /> ,hcclinc. <br /> . Conwuclion Iratlic sh��uld hc rc.trir�cd io spccilic arc;u ul' �hc silc. prcfirahly arcas tha� arc <br /> .urlaccJ ��ilh thc c�i�tinp a,ph;ih ur ��urking pad matcrials nol susccpliblc lo �cct ��calhcr <br /> dislurh:mcc. <br /> • ('unsiruciiun acii�ilics ,hould hc xhcdulcd s�i ih;u ihc Icn���h ol'�imc Ihat tioils ;uc Icti cxposcd io <br /> im�islur¢ is rcdutcd lu�h¢cxlcnl pt;itlical. <br /> Rnn�ine „f ryui��mcn� on thc n:ui�r ,ubgrade suils during Ihc ��ct nr.i�hcr months�cill hc difticuh and ihc <br /> ,ul>u�ndc ���ill likrly bccumc hiphl}� di.wnc�J :ind niurd. In additiun. u sienifie;ml anwunt ul'mud can bc <br /> . -- —— — —----- -- — <br /> I d� �„ :,;n-uu=-�,.; /'n,�C�5' GEOE.NGINEEi.S� <br /> ,�n:n�ni l�� Y:,i- <br />