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1 � <br />4uucFR! CESf+EA5tCN9�tFMF9 <br />ROY F WESTON, INC <br />STOCKTON ANALYTICAL LABORATORY <br />ANALYTICAL CASE NARRATIVE <br />Client: AREG M.M. <br />RFW#: 92125684 <br />Test: Method 602- PURGEABLE AROMATICS (BTEX) <br />1. This narrative covers the analysis of nine (9) water samples M accordance with <br />protocols based on EPA method 602. <br />2 The analytical holding time for the analysis was met. <br />3. 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. <br />6. Blank spike recoveries were within Laboratory QC limits. <br />7. Matrix spike and matrix spike duplicate were within Laboratory QC limits. The <br />matrix spikes RFD's were not within Laboratory QC limits possibly due to matrix <br />interferences. <br />8 Retention times were within Laboratory QC limits. <br />Unit Leader <br />�- 12 -- ;--3' <br />Date <br />