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n <br /> SpargeroAnalytical Laboratory Yt Division <br /> • Mobile Laboratory DivisionTechnob"904MOyInc <br /> Scientific Division <br /> With Automation rn ll&),l <br /> IIIQuality Control <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 laboratory-generated <br /> sample which assesses the degree to which laboratory operations and <br /> procedures cause false-positive analytical results for your sample <br /> C Laboratory Control Spike A Laboratory Control Spike (LCS) is a <br /> sample which is spiked with 30 ppb BTEX, and analyzed at approximately <br /> 10% of the sample load in order to establish method-specific control <br /> limits The LCS results associated with your samples are on the attached <br />. 8020 Modified LCS BTEX Analysis Report <br /> D Matrix Spike Results A Matrix Spike is a sample which is spiked with <br /> 30 ppb BTEX, and analyzed at approximately 10% of the sample load in <br /> order to establish method-specific control limits The Matrix Spike results <br /> associated with your samples are on the attached 8020 Modified Matrix- <br /> Spike BTEX Analysis Report <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 /> Accuracy is measured by Percent Recovery as in <br /> % recovery = Lmeasured concentration) x 100 <br /> (actual concentration) <br /> 1V Analysis Results <br /> Results are on the attached data sheets <br /> 3050 Fite Circle Suite 112 • Sacramento California 95827 0 (916) 362-8947 • FAX(9f6) 362-0947 <br />