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Page 7 of 12 <br /> alscience <br /> A nvironmental Quality Control - Laboratory Control Sample <br /> L aboratories, Inc. <br /> Kiff Analytical Date Received: N/A <br /> 2795 2nd Street, Suite 300 Work Order No: 07-03-1184 <br /> Davis, CA 95616-6593 Preparation: EPA 30508 <br /> Method: EPA 60106 <br /> Project: Tracy High School <br /> Quality Control Sample ID Matdx Instrument Date Analyzed Lab File ID LCS Batch Number <br /> 097-01-002.8,989 ' SolidICP 5300 03120107 070319.1-11 0703191-11 <br /> Parameter Conc Added Conc Recovered LOS%Recce 9valill <br /> Cadmium 25.0 25.3 101 80-120 <br /> Chromium 25.0 26.1 104 80-120 <br /> Lead 25.0 26.4 106 80-120 <br /> Nickel 25.0 26.3 105 80-120 <br /> Zinc 25.0 26.9 108 80-120 <br /> ���lw�• V V 'Relative Percent Difference. CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714)895-5494 . FAX: (714)894-7501 <br />