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Spargero Analytical Laboratory Division <br /> Mobile Laboratory Division <br /> Scientific Division <br /> With Automation in Mind <br /> ' III Quality Control <br /> A. Project Specific QC. No project specific QC (i e , spikes and/or <br /> Jduplicates) 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__ ry 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 in 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 = fmeasured concentration x 100 <br /> (actual concentration) <br />'► IV Analysis„Results <br /> Results are on the attached data sheets <br />' 3050 Fite Circle Suite 112 • Sacramento Calrfornio 95827 • (996) 362-8947 + FAX (916) 362-0947 <br />