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121 11161021 '1� 0 <br /> ROY F. WESTON, INC. <br /> * STOCKTON ANALYTICAL LABORATORY <br /> INORGANICS CASE NARRATIVE <br /> Client: SANTOS <br /> RFW# : 90095005 <br /> W.0. #: 6109--01-01-0000 <br /> 1, All holding times were met. <br /> 2, All initial and continuing calibration criteria was met. <br /> 3, All elements were analyzed by the method as referenced in <br /> SW 846, 3rd Ed. <br /> 4, Zeeman background correction was used for all elements <br /> analyzed by furnace atomic absorption spectroscopy (GFAA) . <br /> 5, All preparation blank results were below the reported <br /> detection limits. <br /> 6, All LCS (blank spike) recoveries were within the 80-120 <br /> control limits established by the EPA '`except 9053+]0-LC2 <br /> which was 60.4%. Poor recovery is due to problems during r;• <br /> filtering process. <br /> 7. Quantitation by method-of-standard addition was not <br /> performed for elements analyzed by GFAA when analytical <br /> spikes did not fall within acceptable QC limits. { <br /> g, The ICP serial dilution was performed for this sample batch. 3 <br /> Stacy L <br /> Brunner/Date Marg e Beaty/Date <br /> Metals Unit reader <br /> ab ana er <br />