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SSpS !lrm�d�r��i� 7 Fr�v�,r.l,'�rl:��,�rhu�:�;. 2011 <br /> . � Eccr.vi, H'achin inn ---- _ HGI Pirjcc�rV'n_?0/;_l?J <br /> Y lnstalling sillation canuol fcncing or anchored strs�v or coir wattics on thc <br /> downhili side of�vmk arcas; <br /> 7 Covcring soil stod:piles ti�ith anchorcd plastic shcetin�; <br /> :- Re��egetating or mulcliing exposed soils with a minimum 3 inch ihickness of <br /> straw if surfaccs will be Icft undisturbcd fur morc �han un:: d��v during «��t <br /> u�cather or one���cek in dry wealher; <br /> i Dirccting runoff away Gom exposed soils and slopes; <br /> > 1�linimizing the Icngth and stccpness of slopcs with cxposcd soils. Gr�ded and <br /> distunc�d slopes should be iracked in place with thc equipmcnt rmu»ng <br /> perpendicular to the slope contours so that the track marks providc a te�ture to <br /> hclp resist crosion and channeling. Some sloughing and ra��cling of slopcs with <br /> cxposed or disturbed soil should bc cxpettcd. <br /> Y llecreasing ivnoff velocitics with check dams, straw Uales or coir wattics; <br /> Y Conlining scdimcnt to tl�e projat silc; and <br /> Y Inspecting and maintaining crosion and sedimcnt control mcasures 1'requently. <br /> ltcpair and�'or replaccinent of dysfunctional erosion conuol cicments should Ur <br /> anticipated. <br /> Pcnnancnt crosion protcction should bc providcd by rcestablishing vcgclation using <br /> hydrosceding and/or landscapc planting. Until d�c perm�ncnt erosion protection is <br /> eslablished, site monitoring should bc performcd by qualificd p:rsunncl to evaluate thc <br /> effectiveness of lhe crosion control mensures. Pro��isions frn• moditicatimis to thc <br /> erosion control systcm based on mmiitoring oFscrv�tions shuuld he included in the <br /> crosion and sedimentation conlrol plan. <br /> I:coi.ocv Bi,ocr.�Vni,i. <br /> 'I hc pronoscd �eall will be up l0 1 U feet in hciglu ncar t6c center and �cill t:q,cr on bnth <br /> cnds to match cxisling grades. Thc wall should bc construcled in accordnncc with thc <br /> attached delail. l�wclve Cool lengths of gengrid should be placed in thc fill at hvo foot <br /> inter��als and be lappcd onto the blocics as shown �vheic thc �vall is IO fect high. Thc <br /> grid I�ngth may he reduced by 2 feet for cach 2 foot reduction in wall heighL 'I'he <br /> gcngrid should cocsist of a uniaxial gcogrid with a lung tcrm dcsigu strengtl� of at ]cast <br /> 3:200 pcunds per lout such as Stratagrid 350(Slrata Glob�l GcoSolutions). <br /> Structurnl fill should bc placcd in cight to tcn inch lifts and comp.ictcd to at Icast 95 <br /> perccnt of thc maximum �ry dcnsity. licavy cumpaction cquipmcnt should not bc uscd <br /> �t•ithin four fect of lhe wall. l�he gcogrid should be placcd on the mmpacb:d soil surG�ce <br /> and stretched t.iught and staked prior to placentcnt of fill ovcr tlic grid. llic grid should <br /> be cut to length and placed such that the enlire surface is covered. No splicing of grids <br /> is af lowed and care shuuld be lakcn lo cnsurc thc grid remains (lat and taught. <br /> SrKuc�uani.Fn.i. <br /> 1Vc recommcnd pl�reinG struclural fill in lifls not cxcccding 10 inchcs in loosc thickncss and <br /> thoroughly compacted to at leasi 95 perccnt uf tLe ma�imum dry dcnsity(�1DD)as dcteimined <br /> b�� the AS7'M U15�7 Icst proccdwc. Thc suilability of c�ca��atcd sitc soils and imprnt soils fur <br /> THF.RII.GI'GItOIII',I\C <br /> — � <br />