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S�r er Analytical laboratory Division <br /> tg Mobile laboratory DMsIOR <br /> Scientific ific Divisionogy Inc. <br /> With Automation in Mind <br /> III Quality CantrOl <br /> No project specific QC (i.e., spikes and/or <br /> A. Project Specific QC. <br /> duplicates) was requested. <br /> B. Method Blank Results. A method <br /> tolwhich laboratory operations and <br /> sample which assesses the deg <br /> procedures cause false-positive analytical results for your sample. <br /> ' C. Lab oratory_Control Spike. A Laboratory Control Spike (LCS) is a <br /> sample which is spiked with 30 ppb BTEX, and analyzed at <br /> approximately 10% of the sample load in order to establish method- <br /> specific control limits. The LCS results associated with your samples <br /> are on the attached 8020 Modified LCS BTEX Analysis Report. <br /> D. Matrix S ikeResults. A Matrix Spike is a sample which is spiked <br /> with 30 ppb BTEX, and analyzed at approximately 10% of the sample <br /> ol <br /> load in order to establish' . The Matrix <br /> method-specificor onlthe sattached 8020 Spike results associated with y samples are <br /> Modified Matrix-Spike BTEX Analysis Report. <br /> 1 No target parameters were detected in the method blank associated <br /> with your sample at the reporting limit levels noted on the data sheets <br /> ' in the Analytical Results section. <br /> Accuracy is measured by Percent Recovery as in: <br /> recovery = (measured c nc ntr tion x 10,4 <br /> (actual concentration) <br /> 1 <br /> IV Anal is Res I s <br /> Results are on the attached data sheets. <br /> ' 50 Fite Circle, Suite 1 92 • Sacramento, California 95827 • (996) 362-8947 • FAX (946) 362-0947 <br /> 30 _. <br />