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September 30,2005 <br /> NOA Project Number.E05120B <br /> 3.2 Soil Sample Collection Method <br /> Soil samples for the vicinity of the above-ground storage tank and vehicle maintenance areas will be <br /> L• collected directly into clean stainless steel tubes or by scooping with a stainless steel trowel into glass <br /> containers. If a trowel is used,it will be decontaminated by washing with a solution of potable water <br /> and Liquid-Nox solution or equivalent prior to collecting each sample. <br /> r <br /> Soil samples co-located with ground water borings will be obtained using a Macro Core sampler with <br /> a 2-inch barrel;the resulting sample will be 1.5 inches in diameter. The Marco Core sampler <br /> contains a plastic liner that retains a relatively undisturbed soil core from which soil samples are <br /> collected. <br /> 4 After collection,the samples will be placed on ice inside an insulated storage chest and transported <br /> promptly under chain-of-custody to the analytical laboratory. <br /> 3.3 Soil Sample Laboratory Tests <br /> Soil samples will be transported to a California state certified analytical laboratory where the <br /> following Environmental Protection Agency (EPA) tests will be performed,depending on sample <br /> location and suspected contaminant: <br /> Manure ponds and disposal areas: <br /> Nitrate as nitrogen by EPA 300.0. <br /> Above-ground storage tank and vehicle maintenance areas: <br /> �• TPH-g and TEPH by EPA Method 8015 Mod. and BTEX by 8015/802113; <br /> • CAM 17 Metals by EPA 6000/7000. <br /> 4.0 GROUND WATER SAMPLING PROCEDURES <br /> 4.1 Drilling Details <br /> 6. <br /> Vironex,Inc. of San Leandro will provide all necessary equipment and materials for drilling and <br /> collecting the ground water samples. The drilling and soil logging procedures are described next. <br /> 4.Z1 DriWagMetbod <br /> The ground water borings will be advanced using a Geoprobe 5400 direct push sampling rig. The <br /> drilling equipment will be operated by Vironex,Inc. The soil cuttings brought to the surface will be <br /> examined and disposed on-site by spreading on the surface around the boring. <br /> 4 "44 <br />