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Auguet 1 , 1989 <br /> Project No. 8906-26G <br /> II. DEBIGN RECOlII7END11TION8 <br /> 5_0 INTRODUCTION <br /> Baeed on our exploratione, it appeara that the eubject property ie <br /> auitable , from a geotechnical etandpoint , for the proposed <br /> development , provided the recommendations contained herein are <br /> followed. Bearing etrata, conaietinq of the Vaehon lodgee�ent till <br /> and ablation drift (Unita 2 and 3) were encountered at deptha <br /> ranging from 1 to 8 feet below existinq ground aurface. Generally , <br /> the bearing atratum wae encountered at relatively ehallow depthe <br /> around the perimeter of the aite and deepened towarda the central <br /> portion of the parcel. 3ee Figure 1 , 91te and Exploration Plan for <br /> depth to bearing in each of the exploration pito. Where the bearinq <br /> atratum ia ahallow, a typical epread footing foundation syetem may <br /> be uaed. Where the bearinq atratum ia deeper, a deepened foundation <br /> syetem will be neceseary to tranemit the foundation loada through <br /> the onaite fill material and into the underlying medi.um denae to <br /> denae, natural aedimenta. This deepened foundation eyatem may <br /> include the uae of extended footinge, concrete trenchea, rock <br /> trenchea, or drilled piere. Dependinq on encountered conditione at <br /> each building eite, it may be necessary to combine ehallow and deep <br /> foundation syeteme. <br /> 6_0 9ITE PREPARATION <br /> Old foundatione presently on the aite which are under building areae <br /> or not part of future plana ehould be removed. Any buried utilities <br /> ehould be also removed or relocated if they are under building <br /> areas . The reaulting depreesiona ehould be backfilled with <br /> atructural fill ae diacuased under 3ection 7.0, 3tructural Fill . <br /> Site preparation of planned building and roadway areas should <br /> include removal of all treee , brueh , debria and any other <br /> deleterioua material . Additionally, the upper orqanic topeoil <br /> ehould be removed and the remaining roota grubbed. Where ahallow <br /> apread footinge will be used, all fill and looee material ehould be <br /> etripped down to the underlying in-place medium denae or dense <br /> sedimenta . If , during etripping , areae of soft aubgrade are <br /> encountered, theae areas ahould be overexcavated and backfilled with <br /> etructural fill. <br /> The natural sediments encountered under the topaoil and/or fill <br /> materials are generally firm and well-suited to the propoeed <br /> conetruction. However, both the natural eedimente and the onaite <br /> fill material contain a high percentage of fine-grained material <br /> which makes them moiature-aenaitive and eubject to dieturbance when <br /> wet. The contractor muet use care during eite preparation and <br /> 6 � <br />