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Geomatrix <br /> In addition, temperature blanks will be placed in each cooler shipped to the laboratory. <br /> Temperature blanks will be provided by the laboratory and will be used to obtain a <br /> representative temperature of the cooler upon laboratory receipt of the cooler containing <br /> samples. <br /> 6.1.2 Laboratory Quality Control (QC) Samples for Soil <br /> The soil and groundwater samples collected during the soil investigation will be analyzed by an <br /> ELAP certified laboratory for the test methods. The laboratory analyses will be conducted in <br /> accordance with procedures outlined in the US Environmental Protection Agency (USEPA) <br /> SW-846 test methods. <br /> Laboratory QC acceptance criteria that will be applied to samples analyzed during the soil <br /> investigation will meet USEPA SW-846 requirements. Four types of laboratory QC samples <br /> will be used to account for variability and evaluate potential contamination in various stages of <br /> the analytical process. Laboratory QC samples include matrix spike/matrix spike duplicates <br /> (MS/MSD), method blanks, surrogate spike recoveries (as appropriate for each analytical <br /> method), and laboratory control samples (LCS/LCSD). Laboratory quality control samples will <br /> be prepared, analyzed, and evaluated per USEPA SW-846 requirements. <br /> 6.2 DATA REVIEW AND COMPLETENESS <br /> Analytical data packages provided by the laboratory will be reviewed for completeness and <br /> acceptance with respect to USEPA SW-846 acceptance criteria for data completeness, holding <br /> times,cooler temperatures, method blanks, and QA/QC parameters. The review will also <br /> include chain of custody documentation and field QA/QC sample results. Based on this <br /> review, analytical results may be qualified using USEPA guidelines for data validation and to <br /> estimate the level of certainty associated with the results (using data qualifiers). <br /> 7.0 REPORTING <br /> Results of the soil investigation will be presented in a separate report for each Facility. A <br /> California professional geologist and/or engineer will supervise the soil investigation activities <br /> and will sign the report. The report that will contain the following information: <br /> • introduction summarizing investigation objectives, field activities, and field <br /> methods; <br /> • tabular summary of laboratory analytical results; <br /> • soil boring logs; <br /> P:l0626.000.0\Docs\MLT Soil Work Plan.doc 10 <br />