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i{ U <br /> work plan due to lack of information regarding contaminant levels. However,all drums will be labeled <br /> 1 <br /> with the following information: source, owner's name and phone number,!date and time,and the words <br /> "pending laboratory analysis." <br /> 'f <br /> i <br /> ;f. <br /> 3.0 LABORATORY ANALYSIS <br /> it } <br /> The soil samples collected during the field investigation will be submitted to a State of California- <br /> 1 i <br /> certified laboratory under proper chain-of-custody procedures. The soil samples will be analyzed for <br /> total petroleum hydrocarbons(TPH) in the diesel range, in afice with California Department of , <br /> I� <br /> Health Services method for TPH characterization, and will be quantified against diesel fuel standards. If <br /> additional sampling is required, a cost estimate may be prepared at that time to include optional <br /> laboratory analysis for semivolatile organic compounds using EPA�Method 8270. <br /> F <br /> LABORATORY QUALITY ASSURANCE AND QUALITY CONTROL ; <br /> li y <br /> 3k <br /> A quality assurance/quality control(QA/QC)program will be implemented during this study to ensure <br /> the precision and accuracy of the data collected. The California-certified laboratory will be required to <br /> perform the appropriate QA/QC procedures for each analytical method used, in accordance with the <br /> method's protocol and the requirements of the San Joaquin County PHS-EHD. Accuracy is a measure of t <br /> r <br /> bias in the measurement system, and accuracy of the analytical data will be determined through an <br /> assessment of the recovery of surrogate and spike compounds. Surrogate compounds will be added by <br /> If <br /> the laboratory to each sample for organic compound analysis,and the percent recovery will be reported <br /> with sample results. Reanalysis will be required for samples in which surrogate recoveries are outside <br /> the laboratory-established control limits. All corrective actions taken for samples requiring reanalysis <br /> will be reported with sample results. Matrix spike/matrix spike duplicate(MS/MSD)compound <br /> recoveries will be reported with sample results. If spike compoundlrecoveries are outside control limits, , <br /> then sample reanalysis will be required. All required reanalysis m I}t be performed within method <br /> recommended holding times. Any actions taken to bring compound recoveries within control limits will <br /> be reported by the laboratory in case narratives supplied with sample results. <br /> 4 <br /> i <br />