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VZ1 INC <br /> 2.0 SOIL BORING PROCEDURES <br /> Soil borings will be advanced until the base of hydrocarbon contamination is reached or the first <br /> groundwater is encountered. Samples will be obtained in the manner outlined in Section 3.1 below. <br /> During the drilling program a soil log will be maintained by a California Certified Engineering <br /> Geologist for each boring according to the Unified So it Classification System. <br /> 3.0 SOIL SAMPLING PROTOCOL <br /> 3.1 Soil Sampling with Drill Rig <br /> A two and one-half-inch-diameter split-spoon sampl r fitted with three six-inch brass sample tubes <br /> will be used to collect samples. In each borehole, sarnples will be collected at five-foot intervals. <br /> After drilling to each sampling depth, the sampling apparatus will be inserted into the hollow auger <br /> and driven into the undisturbed soil beneath the borehole. <br /> Upon recovery,the lower two sample tubes, designated A and B,will be sealed by covering with <br /> aluminum foil, capping with plastic and sealing with rloth tape. This sample recovery method <br /> minimizes head space in the sample tubes. The samples will then be stored on ice pending delivery to <br /> a certified laboratory for chemical analysis and accompanied by appropriate chain-of-custody <br /> documents. The material in the third tube and in the ample "shoe" will be examined and described, <br /> then discarded. Sample descriptions will include lith logy, moisture content, fossil content and odor. <br /> Samples will also be checked with an Organic Vapor Meter. Lithologic logs for each borehole will be <br /> compiled utilizing the sample descriptions. <br /> 08420010.001 2 <br />