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ROY F. WESTON, INC. <br /> STOCKTON ANALYTICAL LABORATORY <br /> tANALYTICAL CASE NARRATIVE <br />' Client: AREG M-M <br /> RFW#: 921OS134 <br />' Test: SW8015(MODIFIED)-TOTAL PLTRGEA 3LE PETROLEUM HYDROCARBONS <br />' 1. This narrative covers the analysis of three (3) water samples in accordance with the <br /> protocols based on The California Luft Manual. <br />' 2. The analytical hold time for this analysis was met. <br /> Y� Y <br />' 3 Continuing calibration criteria was within Laboratory Q C. limits. <br /> 4. The method blank associated with these samples was free of target analyte <br /> interferences at, or above, the reporting limit. <br /> 5. Surrogate recoveries were within Laboratory Q C. Limas. <br /> 6 Blank spike recoveries were within acceptable Q.C. criteria. <br />' 7. Matrix spikes were not requested by this client. <br />' 8. Retention times were within acceptable Q.C. limits. <br /> I <br /> Unit Leader Date <br /> I k <br /> wACEF! OES'1ESL[rvan W! <br />