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_a <br />✓ -3Y� 3 ^✓. s%.1 ^R- F_._e4 - ON ism <br /> - e4 t _ _ a--•i. . <br /> �F <br /> a <br /> October 13, 1987 AGS 87050-2 <br /> USA Stz :ion No. 65, Lodi, California <br /> test,ng. The completed Chain of Custody Record for soil samples <br /> se'ected for testing is included in Appendix B of this report. <br /> $oils Encot}ntered <br /> P3 <br /> Plate P-4 gives a summary of the unified Soil Classification <br /> Y System, which was used to identify the soils. The earth <br /> materials encountered at this site consist primarily of units of <br /> silt and fine- to medium-grained sand. Interbedded silt, sandy <br /> silt, silty sand, and sand units were found to depths of <br /> approximately 20 to 25 feet in boreholes 8-1 and B-2. Lensesof <br /> clay and clayey silt were found between 20 and 25 feet. Clayey <br /> silt or silty clay was found between the .30- and 40-foot depths, <br /> sand and silt were found between 40 and 55 feet, and clayey silt <br /> or silty clay occurs below approximately 55 feet in boreholes B-1 <br /> and B-2. Silt and sandy silt were encountered in borehole B-3 to <br /> approximately the 48-foot depth. These units are underlain by <br /> sand to.the total depth of B-3. Descriptions of earth materials <br /> encountered in the boreholes B-1 through B-3 are presented on the <br /> Boring Fogs, Plates P-5 through P-10. Readings from the organic <br /> vapor analyzer are also included with the soil descriptions._____ _ <br /> Plates P-11 (Crass Section A-A'.) and P-12 (Cross section B-B') <br /> are cross sections that show the approximate distribution of <br /> 9 <br /> `� ,4,o,®oied Geo.Systesrrs <br />