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. sample tube were covered with Teflon material, capped with plastic end caps, <br /> labeled, double-bagged in sealable plastic bags, entered into a chain-of-custody <br /> form and placed on ice in a portable cooler for delivery to a California DHS- <br /> certified laboratory for analysis <br /> Soil samples were examined, described and logged by a California Registered <br /> Geologist using the Unified Soil Classification System (USCS) as outlined in <br /> American Society of Testing Materials (ASTM) document D2487 Logs of the sol I <br /> borings are included in this report as Appendix IX <br /> All coring and sampling equipment was cleaned prior to use to prevent cross <br /> contamination between borings The sampling equipment was cleaned using a <br /> solution of Alconox and tap water, rinsed in tap water and final rinsed with <br /> deionized water to prevent cross contamination between samples Alconox is a <br /> non-phosphate detergent <br /> • Solids were removed from the coring and sampling equipment with a brush <br /> 1 and washed in an Alconox-water solution <br /> • Rinsing with tap water <br /> 10Is Rinsing with distilled water <br /> After completion of the drilling and sampling, the boreholes were backfilled with <br /> neat cement to surface grade <br /> All collected soil samples were delivered, with proper Chain of Custody, to Kiff <br /> analytical Laboratories of Davis, California for analysis <br /> 5.0 PHASE II FIELD INVESTIGATION RESULTS <br /> 5.1 Soils Encountered Underneath the Subject Property <br /> The soils encountered at one and five foot depths, consisted of slightly moist, silty <br /> and clayey sand medium dark brown color The soils encountered at the nine foot <br /> depth was clean fine-grained sand, of medium brown color, saturated The section <br /> from eight to ten feet was in the capillary fringe Soils from twelve to seventeen <br /> feet in depth, consist of medium light brown, loose, medium to coarse grained <br /> sand, and a dense clay was encountered at a depth of from seventeen to twenty <br /> feet bgs <br /> Avalon Environmental Consultants 9627001-6 <br /> Joes Truck Plaza 15600 5 Harlan Road <br /> April 15,2007 <br /> Lathrop California <br />