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Sparger Analytical Laboratory Division <br /> Mobile Laboratory Dmsion <br /> TechnologyInc Scientfic Division <br /> With Autcmcfron rn Mrna <br /> Il <br /> Quahly Control <br /> A Project Specific QC No project specific QC (i e , spikes and/or <br /> duplicates) was requested <br /> ' B. Method Blank Results A method blank is a laboratory-generated <br /> sample which assesses the degree to which laboratory operations and <br /> procedures cause false-positive analytical results for your sample <br /> No target parameters were detected in the method blank associated with <br /> your sample at the reporting limit levels noted on the data sheets in the <br /> Analytical Results section <br /> C. Laboratory Control Spike. A Laboratory Control Spike (LCS) is a <br /> sample which is spiked with known analyte concentrations, and analyzed <br /> at approximately 10% of the sample load in order to establish method- <br /> specific control limits The LCS results associated with your samples are <br /> on the attached Laboratory Control Spike and Laboratory Control Spike <br /> ' Duplicate Analysis Report <br /> D. Matrix Spike Results A Matrix Spike is a sample which is spiked with <br /> ' known analyte concentrations, and analyzed at approximately 10% of the <br /> sample load to order to establish method-specific control limits The <br /> Matrix Spike results associated with your samples are on the attached <br /> ' Matrix Spike and Matrix Spike Duplicate Analysis Report <br /> ' Accuracy is measured by Percent Recovery as in <br /> % recovery = measured concentration x 100 - <br /> ' (actual concentration) <br /> ' Ill Analysis Results <br /> Results are on the attached data sheets <br /> ' 3050 Fite Crc,e U,re 5ccromenro California 9`027 • (916) 362-8947 • FAX (996) 362-0947 <br />