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1 <br /> u..uee� oerxmsaauuxn <br /> ROY F WESTON, INC. <br /> STOCKTON ANALYTICAL LABORATORY <br /> ANALYTICAL CASE NARRATIVE <br /> I <br />' Client. SAN JOAQUIN HSA <br /> RFW#- 9308S6I4 <br /> Test 602-PURGEABLE AROMATICS (BTEX) <br /> I <br /> 1. This narrative covers the analysis of five (5) water samples in accordance with <br />' protocols based on EPA method 602 <br /> 2 The analytical holding time for this analysis was met. <br />' 3 The continuing calibration criteria was met for this analysis. <br /> 4 The method blanks associated with these samples did not contain any target analytes <br /> at, or above, the reporting limits. <br /> 5 Surrogate recoveries were within Laboratory QC limits with the exception of MW-8 <br /> which bad matrix interference <br />' 6 Blank spike recoveries were within Laboratory QC limits. <br /> 7 Matrix spike analysis was not requested by the client. <br />' 8 Retention times were within QC tolerance limits <br /> 1 <br /> jz--__r, <br /> ale E Gamble\Unit Leader Date <br />