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Y4L1G 744E Gil YA av, S <br /> lROY F WESTON, INC <br /> STOCKTON ANALYTICAL LABORATORY <br /> ANALYTICAL CASE NARRATIVE <br /> Client SAN JOAQUIN COUNTY <br /> I RFW# 93065033 <br /> i <br /> I Test EPA 602-PURGEABLE AROMATICS <br /> I This narrative covers the analysis of five (5) water samples in accordance with <br /> protocols based on EPA method 602 <br /> I <br /> 2 The analytical holding time for this analysis was met <br /> 3 Continuing calibration criteria was met for this analysis. <br /> 4 The method blank associated with this sample did not contain any target analytes at, <br /> or above, the reporting limits <br /> I Surrogate recoveries were within Laboratory QC limits with the exception of sample <br /> MW-8 which had a unidentified peak come out at the same time as the surrogate <br /> 6 Blank spike recoveries were within Laboratory QC limits with the exception of <br /> Ethylbenzene (15101c) <br /> 7 Matrix spike analysis was not requested by the client <br /> H Retention times were within QC tolerance limits <br /> I <br /> bl <br /> Dale E Gimble\Unit Leader Date <br /> 1 <br />