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i � I <br /> spar r Analytical Laboratory Division <br /> ge <br /> 0 F Mobile Laboratory Division <br /> T6chwk4 <br /> Scientific Division <br /> y;nc. <br /> IWith Autornotion in Mind <br /> k. <br /> i <br /> i <br /> i <br /> III Quality Control <br /> ,i <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 jaboratory-generated <br /> sample which assesses the degree to which Iaboratory operations and I <br /> ` procedures cause false-positive analytical results for your sample. ' <br /> A Laboratory Control Spike (LCS) is a <br /> C. LaboratoryControl Spike. Y <br /> sample which is spiked with 30 ppb BTEX, and analyzed at <br /> approximately 10% of the sample load in order to establish <br /> specific control control limits. The LCS results associated with your samples <br /> are on the attached 8020 Modified LCS BTEX Analysis Report. <br /> !i <br /> L <br /> D. Matrix Spike Results. A Matrix Spike is a;,sample which is spiked <br /> with 30 ppb BTEX, and analyzed at approximately 10% of the sample <br /> !� load in order to establish method-specific control limits. The Matrix <br /> Spike results associated with your samples are on the attached 8020 <br /> Modified Matrix-Spike BTEX Analysis Report!. <br /> I <br /> No target parameters were detected in the method blank associated <br /> with your sample at the reporting limit levels! Hated an the data sheets <br /> in the Analytical Results section. <br /> ,I <br /> Accuracy is measured by Percent Recovery as in: <br /> % recovery measured concentration x 100 <br /> (actual concentration) <br /> IV Analysis Results I <br /> Results are on the attached data sheets. <br /> E� <br /> i <br /> ia 95827 (996) '362-8947 FAX(916) 362-0947 <br /> 3050 Fite Circle, Suite 112 • Sacramento, Californ • • <br />