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LABORATORY CONTROL SAMPLE <br /> QUALITY CONTROL REPORT <br /> Analyzed By: G. Barrett Reviewed By. G. Rodrigo <br /> i <br /> wining Laboratories, Inc. Examination Number: 700-7208.1-8 <br /> Constituent MB Spike LCS FL <br /> CSD LCS LCSDResult Level o RPDResult esult /o Rec <br /> Lead (Pb) C0.05 1.0 0.956 0.955 95.6 95.5 0.10 <br /> I <br /> i <br /> EXPLANATIONS: <br /> All concentrations in mg/L: Milligrams per liter (ppm) <br /> Method Blank: The method blank is used to determine if method analytes or other interferences are <br /> present in the laboratory environment, the reagents or apparatus. <br /> Laboratory Control Sample: A laboratory control sample is generated by spiking the analyte into a relatively inert <br /> matrix (clean sand or blank water). The laboratory control sample is analyzed exactly <br /> like a sample, and its purpose is to determine whether the methodology is in control <br /> and whether the laboratory is capable of makingaccurate and precise measurements. <br /> v, 3 M97 iaC.WKS1 <br />