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a <br /> 9 <br />MENNOW <br /> S <br /> 3.2 SOIL SAMPLING <br /> w <br /> The first hole drilled on site will be continuously cored in <br /> order to obtain a complete and detailed geologic description. <br /> All subsurface materials will be described using the visual <br /> method of the Unified Soil Classification System (USCS) as <br /> described in United States Bureau of Reclamation Document No. <br /> 5005-86. Each subsequent well will be sampled at five foot <br /> intervals. Samples will be collected utilizing a split spoon <br /> sampler advanced using a 140 lb. hammer. The sampler will house <br /> brass tubes for collect;on of undisturbed samples. The sampler <br /> and brass tubes will be decontaminated by scrubbing with a non- <br /> phosphate detergent, several water rinses, methanol rinse and a <br /> distilled water rinse. (Brass tubes pre-cleaned by supplier may <br /> be used.) Samples for laboratory analysis will, be collected at <br /> the following locations in each well bore (if applicable) : <br /> unsaturated and saturated zones <br /> 1. Interface between the <br /> 2. Areas of obvious contamination, specifically the sample <br /> with the highest hydrocarbon headspace measurement. <br /> (The number of aampies collected per this condition <br /> will be at the discretion of the field geologist. ) <br /> 3. Areas of significant lithologic changes <br /> 4. Areas of any other unusual conditions <br /> Each soil sample retained for analysis will be described, checked <br /> for the presence of hydrocarbons, and promptly sealed with <br /> aluminum foil and plastic end caps. The samples will then be <br /> placed in a "zip-loc" bag and sealed with 5acurity tape. The <br /> samples will be stored in an refrigerated ice chest until <br /> delivery to the laboratory. <br /> All soil samples will be analyzed by IT Analytical services <br /> laboratory in San Jose, California. The samples will be analyzed <br /> utilizing the following methods and detection limits. <br /> 3--3 <br />