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t <br /> MATRIX SPIKE <br /> QUALITY CONTROL REPORT <br /> analyzed By: G. Barrett Reviewed By: G. Rodri o <br /> Sample Matrix: Soil Spiked Sample ID: 7208.1 <br /> wining Laboratories, Inc. Examination Number: 700-7208.1-8 <br /> Constituent Method Sample Spike MS Result MSD MS % MSD PD <br /> i <br /> Blank Result Level <br /> Result Result Rec. <br /> i <br /> Rec. i <br /> Lead (Pb) <br /> <0.05 27.2 100 117 108 <br /> 89.8 80.8 8.0 <br /> EXPLANATIONS: <br /> Matrix Spike and <br /> Matrix Spike Duplicate: A matrix spike is a sample to which a known amount of analyte has been added. The <br /> percent recovery and the relative percent difference are assessed to determine the <br /> accuracy and precision of the analytical procedure. <br /> 3 05197 (aC.WKS) <br />