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land VentuYes l,LLC Lafld Ventures 1,LLC <br /> Project B14-08095 ProJect 614-08095 <br /> Hovem6er 19,2014 <br /> Novemkx+,r 19,2014 <br /> Pa e 6 <br /> 8 Page 7 <br /> D. Recommendations <br /> The following remmmendatloqs are based on the resuks of our soll borings,laboratory test rewlts and D.l.b. Ewcevatbn DewaDering <br /> Water was eiwountered by some of the 6orir�while dNllf�g and in all of trye temporary water Ievel <br /> groundwater measurements. indicators.Based our borings as well as thox rnmpleted by GME,it Is IA�ely Mat water wlll be <br /> encountered in other parts of the site.Based on our observations and measuremerns,we recanmend <br /> D.1. Buildtng and Pavement Subgrede Preparation <br /> that you design this development wRh groundwater at an etevatbn of about 1018J. <br /> D.1.a. Etccavations When gradfng this site,we recommend removing groundwahv from the excavations.Sinoe this site Ls <br /> We recommend removing the topsofl,possible fill soils and the rather soft[layey soils f�m beneath the most cl <br /> sed house ds and oversin areas.Based on the wil bori excavation de are h� eYeY soil,sumps and pumps shoukl be adequate tn mrrtrol most inflltrating watersftuaUons. <br /> Prppo pa ngs, pths e�ected ta <br /> range from approxirnate{y 1 to 10 feet,however,deeper sofl correctlon efForts may be needed in other <br /> areas of the site not explored by our borings.Table i lists the recommended excavation depths at the D.i.c. Seleding Excavat{on gackflfl and Additlonsl Required Fill <br /> If the battoms of the excavations remain wet,we rerommend the initial backfiM sod conskt of least 2 feet <br /> Endividuat boring loptlons.For street construction,the depth of excavation may be reduced. This should <br /> of caarse sa�d having less than 50 percent of tfie particks by welght passing a#40 sieve,and less than 5 <br /> be eraluated in the Held. perterrt of the particles passing a#200 sleve.We aMidpate that thts material will need to be imported tp <br /> the site. <br /> Table 1.Antkipated Excavatton De for Resida�tial Co�strvction. <br /> Mtldpahd DepM°� Apprmd�"aa Bolt°m Do-site wils free af organic�l and debris can be considered for reuse as backflll and flll.However,tFie <br /> Surfsoe Elevatlon E�avat►on £In'ad°^ top�il should rat be re-used as engineered fil under haue pads or belaw sheets.The clayey soils befng <br /> aodng iR1 !�i (R1 <br /> ST-1 lOxi.B 1]/a 10221/2 fine-grained,wfll be morc diffiah to compad if wet or albwed to beoome wet,or If spread arx! <br /> ST-2� 30245�� 412• 10201/2-10121/2• compaded over wet mrfaces,Based on the high mofsture mrrtents of the soils an thh site,gradng using <br /> 57-3 1073.3 J 4 1079 _ the on ske solls will likely only be posslble during the summer months when the best possibfe drying <br /> 5T-4 1024.0 7-9' 1017-1015• weatheris available. <br /> ST-5 1072.8 � i 1J2-10�' A 1021-1012 7/2• <br /> '57-6 102fiA 2-%� 10241/2-1019 1/2• we recommend that grenular subbase matertal for pavement support conslst of aelect granuiar sand <br /> STa 1074.8 21/2-5• 1o22-ioi91%1• having less than 12 percerrt of the partkles by weight passing a It200 sieve.We aMidpate that tfiis <br /> ST-8 1028.7 2-4• 10261/2-10241/2` material will also need to be imported to the stte <br /> 'The depth af e�ratlon should be determined In Me flald with test pib a durin6 slte�adlig and in coruider�tlon of Flnal <br /> bullding and s"rce grades. D.i.d. Pla�ement and Compactfon of BadcfHl and RII <br /> We recwnmend spreadng backfiil and flH In loose fifts of approxtmately 8 to 12 inches depending on the <br /> Excavation depths wWl vary hetween the borings.Portbns of the e�aavatio�u may also be deeper than soil type used and the size af campactor used.We recommend compacting backfill and flll in acoordance <br /> Indicated by the borings.Contractors should also be prepared to extend excavatlw�s In wet or fine- with the criterla presented In Table 2.The relative cornpactlon of uttlity bac�ll should be evaluated <br /> grained sofls to remove disturbed bottom soils. based on the structure below which it Is liutalled,and vertkal proximity tothat structure. <br /> To provlde lateral support to replacement backRll,additional requtred flfl and the structural loads they <br /> will wPport,we reoommerd overslxing(widening}the excavatbns 1 foot horizontally beyond the outer <br /> edges of the building perimeter footh+gs,or pavement Iimlts,foreach Foot the exavations extend below <br /> bottomof-footMg or pavement subgrade elevations. <br />