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N��vemb r �., �988 � 883-1580 <br /> 4, ��ia«�RFACE CONDITIONS <br /> 4.1 �il.s <br /> Th site is loc�ted in south Everett, � reyion which is typic�lly <br /> underl�in by � thick sequence of g1u1a11Y consolid�ted dense gl�cial , <br /> ' three tohsix lnchessdeep unUnderlying the topsoilew�s�iscomputt from <br /> brown/orange s�nd md gravel unit with littl� to some s11t, lnterpreted <br /> �s we�thered ti11 v�rying in thickness from 1.5 to 4.0 feet. The <br /> I we�tAered t1'1 w�s �bsent �t TP-12. In general the weathered till <br /> qr�ded into dense, yr�y s11ty s�nd md gr�vel, fresh till with <br /> ocasion�l 1�yers of compac4 outw�sh s�nd �s seen in TP-4 and TP-13. <br /> i The dense till axtended to the deepest depth exc�v�ted, 12 feet in TP-6. <br /> Fill consisting of we�thered till w�s found to a depth of 2.5 feet at <br /> and4ls loc�llzedsie thetare��of proposedebulldingheH"ite from the east <br /> � 4,2 �roundwater <br /> in thewfreshstill9e M�terbflowew�s�minor and 1lkelytreflacts water3 feet <br /> I Lr�pped on silt lenses 1n the glaci�l til] . k'ater s�tur�ted till was <br /> proposedrloc�tion of the southiendhofebuilding �K�depression at the <br /> I 5, ��US10NS AND RECOMMFNDATIONS <br /> � 'S.1 . n ral <br /> B�sed on the results of our explor�tian, we believe that the site can be <br /> gener�lly be developed �s planned. However, in the are� of TP-4 +nd <br /> buildinys G,H �nd J where loose fill w�s encountered we recommend that <br /> the fill materi�ls be remaved. Once the fill materi�l is removed, site <br /> structuresbc�e betsatisfactorily�supportedsoo sh�llowffootingse provided <br /> tAey �re founded on compact or dense native sotl or compacted, <br /> structur�l f111 . tonventtonal sl�b on grade floors or structurally <br /> � gfeotecho cal,relatedrpointsbaresdiscussedhie more detail 1n theand other <br /> follo►aing sections. <br /> i <br /> 5.2 Fo���dations <br /> + Sh�llow conventlonal spread and strip footings may be used 1f they are <br /> founded on comp�ct or dense n�tive soils or in compacted structural fill <br /> pl ued over the n�tive soils. Footings should not be founded on Topsoil <br /> designed based onethe followingirecommendeAsvaluesfootings should be <br /> � <br /> � <br /> Oold�r Aaoclet�� <br />