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a <br /> WINOEM d101M.4111LLf..rt. ' <br /> 6. <br /> ROY F. WESTON, INC. <br /> STOCKTON ANALYTICAL LABORATORY <br /> ANALYTICAL CASE NARRATIVE <br /> Client: JERRY JOY <br /> RFW#: 9204S631 <br /> Test: SW8020-PURGEABLE AROMATICS <br /> 1. This narrative covers the analysis of eleven (11) soil samples in accordance with <br /> protocols based on SW-846, method 8020. <br /> 2. The analytical holding times for these analyses were met. <br /> 3. Continuing calibration criteria was met for this analysis, with the exception of <br /> Ethylbenzene (-15.3%) and p-Xylene (-16%) in'the first standard. <br /> 4. The method blanks associated with this samples did not contain any target analytes <br /> at, or above, the reporting limits. <br /> 5. All surrogate recoveries were outside Laboratory QC limits, with the exception of <br /> sample # 2E (66%). Poor surrogate recoveries were due to matrix effects. <br /> 6. The blank spike recoveries were within Laboratory QC limits. <br /> 7. The matrix spike recoveries were outside Laboratory QC limits due to matrix effects. <br /> 8. The matrix spike RPD's were within Laboratory QC limits. <br /> 9. Retention times were within QC tolerance limits. <br /> 10. Confirmation by second column analysis was performed. <br /> nit Leader Date <br />