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i <br /> CO\CLGSIOVS AND RECO`L`tENDA"fI0`1S <br /> , GE�EELIL <br /> The na[ive soils in the Phase 2 area will provide excellent suppor[ for <br /> � shallow spread footings. S[ripping of surface organic soils is required and <br /> attention to surface dr�inage is necessary to protect [he exposed bearing <br /> � materials. The glaci.al till and ou[wash soils can be used in structural fill.s. <br /> The Cill is a moisture-sansitive soil, so care must be [�ken [o work these <br /> I soils in dry wea[her when the moisture con[ent uE the soil can be maintained <br /> at or near op[imum for compaction. <br /> ' Our detailed conclusions and recommendations are presented in the ful- <br /> ILowing paragraphs. <br /> � SITE PREP��RITION A.1'D EARTHI:ORI: <br /> Site Preparation: We recommend cha[ all vegetation, root systems and <br /> I fores[ duff 6e removed from settlement-sensi[ive construc[ion areas such as <br /> building, roadway and parking areas, and beneath earth dikes. Any existing <br /> fill in [hese areas which is not in compliance with the requiremen[s presented <br /> Ibelow for s[ructural fill should also be removed. We estimate that the re- <br /> quired depth of stripping will generally be on the order of L [0 2 fcet, Uu[ <br /> Iwi11 be deeper Locally. Depre:,sions exposed or created during site stripping <br /> should be cleaned oE disturbed material and backfilled with structural fill. <br /> I Some lucal bog areas at the si[e contain soft pea[ and sil[ deposits. <br /> We recommend that these soft soils be removed to their fu11 depth in new build- <br /> I ing and earth dike areas. In roadway and parking areas, the soft soils should <br /> be removed to [he dep[h determined by the engineer who is monitoring earthwork <br /> acCivities. <br /> I <br /> � lJe recortunend that all slab and pavement subgrade areas be thoroughly <br /> proofrolled with heavy rubbet-tired construction equipment. Any soEt, loose <br /> � or otherwise unsuitahle areas revealed during prooErolling sltould be recom- <br /> pacted, iE practical, or rer..oved and replaced with s[ructural fill. l2e rec- <br /> ummend tlmt the proofrolling oE slab and pavemen[ �reas be monit��red by a <br /> member oE our firm. <br /> The surficial soils at [he project si[e are somewhat ;noisture-sensitive <br /> and wili be difficult [o work during wet weather. It will be prefecabla [o <br /> schedule site prep�ration and ear[hwork durLng periods of extended dry <br /> � weather when the near-surface soil.s will be Less susceptlble to disturba�ice <br /> and will provide better support Eor construc[ion equipment. If work is <br /> I � <br /> - s - GeoEngineers <br /> � Incorporoted <br />