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Sparge Analytical Laboratory Division <br /> L � Technol v Mobile Laboratory Division <br /> (09 Inc. Scientific Division <br /> -vli � 4utomctron in rt•1i;c <br /> L <br /> L <br /> III Quality Control a <br /> k <br /> L A. Project Specifc QC. No project specific QC (i.e., spikes and/or <br /> duplicates) was requested. <br /> LB. 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 /> l 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 /> LDuplicate Analysis Report. j <br /> D. Matrix Spike Results. A Matrix Spike is a sample which is spiked with <br /> r known analyte concentrations, and analyzed at approximately 10% of the <br /> L sample load in order to establish method-specific control limits. The <br /> Matrix Spike results associated with your samples are on the attached . <br /> LMatrix Spike anc Matrix Spike Duplicate Analysis Report. <br /> Accuracy is measured by Percent Recovery as in, <br /> % recovery = measured concentration x 100 <br /> (actual concentration) <br /> L <br /> 1V Analysis Results <br /> L <br /> Results are on the attached data sheets. <br /> L <br /> L <br /> X050.Fite Circle. '"uitc� ;976) :;62 8947 FAX (996) 362-0947 <br />