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July 21, 2014 <br />Two Single-Family residences <br />L&A Job No. 14-065 <br />Page 5 <br />eroded, and may slough aaad redeposit to a flatter inclination. Natural slopes or man-made <br />cuts in advance outwash deposits can remain stable for an extended period of tiine if <br />properly and adequately drained. If remain undisturbed and properly drained the <br />underlying fresh advance outwash soil can provide good foundation support with little <br />settlement expected for light to moderately heavy structures. <br />S�IL CONDTTION <br />Subsurface conditions of the site were explored with three test pits. The test pits were <br />excavated on June 3�, 2014, with a tract-mounted backhoe to depths from 9.0 to 9.5 feet. <br />�rh� �„�,�r��;iYn;�a-� l���tions c�f th� t�sfi nats are slaown on Plate 2- Site and �xploration <br />Location �lan. ihe iesi piis �ere 1a�caiecl �vi��� �;iih�i a���� r��;as�re ��• �y v�sual <br />reference ta existing topographic features in the field and on the topographic survey map, <br />and their lo�ations shauld be considered only as accurate to the measuring method used. <br />A geotechnical engineer fxom our office was present during subsurface exploration, <br />exaLnined the soil and geologic conditions encountered, and compieted logs of the test <br />pits. Soil s�mples obtained from each soil layer in the test pits were visually classified in <br />genera] accordance ��vith United Soil Classification System., a copy of which is presented <br />on Plate 3. Detailed descriptions of soil layers encountered during site exploration are <br />presented in test pit logs on Plates 4 and S. <br />Test Pit 1, located near the southeast corner area on the toe of ihe hillside encountered a <br />layer of topsoil and/or disturbed soil oi loose, organic, silty fine sand, about 2.1 feet thicl�. <br />Underlying this layer of topsoiUdisturbed soil is a layer of weathered soil of light-brown <br />LIU �& ASSOCIAT�S, INC. <br />