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). 7.0 METHODS <br /> I! <br /> I <br /> I <br /> 0 . 1 Soil Sampling <br /> ,Soil sampling will be conducted in the following manner; <br /> A 6xl:5 inch4brass tube will be driven into the soil with a wooden <br /> 'mallet. That part of the soil sample collected in a brass tube will <br /> j:be stored atJapproximately 4° C for transport to the laboratory. <br /> WAnother '-portion of soil will be taken from the same sample location <br /> and placed into a disposable container and sealed for later <br /> ' screening with an OVA. After the soil sample container has been <br /> i( <br /> brought ! to ambient temperature, the head space of the container <br /> will be .screened with a portable organic vapor analyzer calibrated <br /> `a' for direct reading in parts per million volume (ppmv) . The sample <br /> . :container will be partially opened and the detector probe <br /> ``: immediately placed within the head space of the container. The <br /> highest 'observed reading will be recorded. That sample will also <br /> �' be used 'for' classification and description. <br /> a i; 7 .2 Soil Classification <br /> ilAs the samples are obtained in the field, they are classified in <br /> accordance with the Unified Soil Classification System (USCS) . <br /> Representative portions of the samples are then returned to the <br /> laboratory for further examination and for verification of the <br /> � field �iclassification. <br /> p7 .3 Laboratoiv Analysis <br /> tytySoil samples will be analyzed pursuant to San Joaquin County <br /> liregulations and Shell requirements. All laboratory analysis will <br /> Elbe performed!iby a state-certified-laboratory. <br /> ii <br /> "x! 7 .4 Sample Analytical Tests <br /> Y All samples submitted for laboratory analysis will be analyzed for <br /> 1ITPH as gasoline ,low/medium boiling point hydrocarbons, with BTEX <br /> distinction by EPA method 8015/8020, total lead by EPA method 7421, <br /> and for'! Ethyiene Dibromide. <br /> j' 7 . 5 Quality Assurance Plan <br /> '7 5 1 'General Sample Collection and Handling Procedures <br /> ?' Proper collection and handling are essential to ensure the quality <br /> -of a sample. �Each sample will be collected in a suitable container, <br /> preserved correctly for the intended analysis, and stored prior to <br /> analysis fork no longer than the maximum allowable holding time. <br /> Details) on the procedure for collection and handling of soil <br /> [ samples <br /> l: to be used on this project can be found in Section 4. <br />