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s�1 er alytical Laboratory Division <br /> 1 - Mobile Laboratory Division <br /> Technology Inc. Scientific Division <br /> 1 II Quality Control <br /> 1 A. Proiect Specific QC. No project specific QC i.e., spikes and/or <br /> duplicates) was requested. <br /> 1 B. Method Blank Results. A method blank is a la oratory-generated <br /> sample which assesses the degree to which laboratory operations and <br /> procedures cause false-positive analytical results lor your sample. <br /> 1 No target parameters were detected in the methoc blank associated with <br /> your sample at or above the Practical Quantitation Limits (PQL's) noted <br /> ' on the data sheets in the Analytical Results section. <br /> C. Laboratory Control Spike. A Laboratory Control Spike (LCS) is a <br /> 1 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 Lab ratory 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 ata proximately 10% of the <br /> ' sample load in order to establish method-specific control limits. The Matrix <br /> Spike results associated with your samples are on the attached Matrix <br /> 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 /> 1 III Analysis Results <br /> ' Results are on the attached data sheets. <br /> i <br /> 1916) , 62-8947 �4X (916) 362-0947 <br />