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:l � � �d � � `� l l.. i � �:�: i � .�'J•'71\. �', \ �. . <br />'1'emporary Soil Nail Shoring �Yall Uesign. Our soil nail ���ail design is ongoing. Thc shoring <br />wall dctails ���ill bc providcd on Ihc soil nail rlans. <br />7'emporar�• De«�atering. Por successful soil nail ���all i istallation and to provide dry conditions <br />for construction acti��itics, ���c rccommend a two-step dc���atering systcm. The first step will <br />depressurizc thc advancc outwash aquifcr using decp dc�aatcring welis installed and operating a <br />minimmn of 14 days bcforc excavalion bcoins. The sccond step calls for vacuum extractionhvell <br />points installcd from within thc excavation to dewatcr thc advance outwash for construction. <br />Potenlially Conlaminatcd Soil and Ground�ratcr. Gxcavatcd soil that is potcntially <br />conlaminated must be pro; �rly handicd, scgregated, testcd, and disposcd oL Thc prime <br />contractor and excavation and shoring subcontractors should bc familiar with thc sitc conditions <br />sc� lhcy are prcpared to address contaminalion in thc field. Shannon �C �Vilson should prepare a <br />Construction Contingency Plan to support :md guide these construction activitics. The <br />around���atcr from consU�uction dc���atcring, soil nail ���all drainagc matcrial, footing drains, and <br />thc suhdrnin spstcm ���ill also nccd to bc properly addresscd. <br />i- i o��.: ��. �� r, i,,, iti,i '_ l- I-09(i-1-l-OOI <br />