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� FIELD KEPORT' <br /> Projcct: Ho«�3rd Strect Addition f�ile No.: 2910 <br /> Cornerstone <br /> � i Geotechnieai, II1C, Client: CascadeTestingLab Date: 2010-420 <br /> A Division o(Robinson&Noblc,Inc. <br /> 17625130�^Avenue NE C102 Location: Evcrctt Rcport No: I <br /> Woodinville,WA 98072 Wcatiter: Light 2aii�/Overcast Page: 2 of 3 <br /> Purpose of SuU�adc cvaluation <br /> Phone: 425-844-1977 Visit: <br /> Fax: 425-844-1967 By: JRW <br /> Gxcavations for column foundations cxistcd at approximately 4 fcet in dcpth in the arca of 6 columns <br /> lhat will support lhe planne� carpori:;lructurc. Foundations Cor the G columns plunned to support th� <br /> new carport�verc also probcd. The probc rod did not pcnctratc morc thau 6 �0 8 inchcs in depth. <br /> SuUgrade soils consisted of nativc gray,densc fine to mcdiuin sand tvith grflvel. Wc undcrstand that <br /> l�iminalcd wwd bemns will spnn betv✓een the columns for foundation support. It is our opinion tl�at tl�c <br /> colwnn foundations will support tlic planned 2000 psf bcaring capacity for the planned new carp.�rt <br /> shucturc. <br /> Wc obscrvcd that slaU subgradc had bccn prcpared for thc planncd carport structurc. Approximatcly 1 <br /> foot of gravcl had bcen pinccd ovcr cxisting brmvn sand with silt and gravcl. Wc also obscrvcd tbat an <br /> organic luyer existed ranging from 0 to approximately 1.5 feel below tlie gravel placed for slab support. <br /> Thc organic laycr wus approximafcly 2 inchcs in thicknr,ss. Matcria]placed abovc this organic laycr <br /> was interpreLed to be till. Plans indicate thut the slab �vill flolt and caist witl�a thickencd edgc. Tl�c <br /> slab will not be connected to the foundaiion system. There is some risk of setNement of the slab as long <br /> �s thc fill and organic laycr obscr�cd is not rcmovcd. Thc risk of sctticmcnt should bc madc aware to <br /> lhc prnperty owncr. <br /> Attachmcnt Signed: ------ ---- -----__--- <br /> Distribution: <br /> �' :y,.� li <br /> � <br /> '� <br /> 1 <br /> x. <br /> �. <br /> . �: <br /> 'Y <br /> ; <br /> �M�..�a�.�-..��'�a:i.��W' ^l <br /> c rtTVU�P. <br />