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—_ � <br />1 <br />� <br />The Rilev Group /nc. <br />October 27, 2005 <br />Mr. IIruce Ha��ashi <br />Miller Hayashi Architects LLC <br />118 North 35'" Sveet, Suite 200 <br />Seattle, WA 98103 <br />Subject: Gcotechnical En�inecring Report <br />Community Hcalth Centcr of Snohomish Counrv <br />1019 & ]027- ll2'" Strcet SVV � <br />Ererett, WA 98204 <br />Project No. 2005_196 <br />Denr Mr. Havashi: <br />As requested, The Rilcy Group, Ina (Riley) has perfortned a gcotechnical enginecring study for thc <br />nbove referenced project. Rilcy understands diat the owncr is planning to devclop a parcel of land <br />and build a community hcalth center building with associnted parking. The attached repori presents <br />our tindings nnd recommendutions for the geotechnical aspects nnticipated for the project design <br />and consWction. <br />Our field cxploration indicates thnt the site is genemlly undcrluir by 2 feet of loose silty fine <br />SAND with trace gravel ovcr 3 to 6 fret of inedium dense to d^.n�e silty SAND with some grnvel <br />o��crlying very densc glacial till. Test pit TP-8 located at the souAi portion ofthe site encountered 3 <br />fect of loose fill over densc sandy GRAVEL Iayer. The fill consists of bailast rocks, .,ilry sand, Vec <br />mots, and gnrbage debris. Groundwnter was not encountered during our subsurfnce investigatiun, <br />reaching n macimum depth of 10 feet below ground surface (bgs). Dased on the soil conditions <br />ohserved, Riley concludes that the proposed building can be supported un conventional sprend <br />faoting foundations bearing on medium dcnse to dense native soil or structural fill if needed. i'ha <br />building floor slab can bc similarly supported. <br />"I'his repon provides our georechnicnl findings and recommendntions for the project. T'fiese <br />recommendations should be incorpornted into project design and conswction. <br />We trust the information presented is sufficicnt fur your currcnt nceds. If ��ou have any questions <br />or requirc additional infonnation. picase cnil. <br />Sincerch yours, �. ��N c <br />TIIF. RILEI' GNO(�P, 1NC. �\�. OF W'�H/�,_'S',� <br />10/2�/0� <br />Chicn-Lin (Johnm ) Chen, P.E. <br />Project Cnginccr <br />.�2' R 1I' <br />�9 �R 4��.�� <br />vS10NAL � <br />.r <br />EXMHES SEPi.12 <br />The Riley G:oup, Inc. <br />�� <br />Ricky R. Wang. Ph.D.. P.C-. <br />Principal Engineer <br />