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ROY F. WESTON, INC <br /> STOCKTON ANALYTICAL LABORATORY <br />' ANALYTICAL CASE NARRATIVE <br />' Client: AREG M M <br /> RFW#• 9209S768 <br /> I <br /> Test: SW8020-PURGEABLE AROMATICS <br /> 1. This narrative covers the analysts of four (4) soil samples in accordance with <br />' protocols based on SW-846, method 8020. <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 these samples did not contain any target analytes <br /> at, or above, the reporting limits. <br /> I5 Surrogate recoveries were within Laboratory QC limits with the exception of MW 5- <br /> 40 (63%) and MW 5-30 (6i%) possibly due to matrix effects. <br />' 6. Blank spike recoveries were within Laboratory QC limits. <br />' 7 Matrix spike and matrix spike duplicates were not requested by chent. <br /> 8. Retention tunes were within QC tolerance limits. <br /> I <br /> 'n' <br /> CeAL <br />' 11'i" <br /> i <br /> Unit Leader 1 Date <br /> I <br />