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Sparwo <br /> Analytical Laboratory Division <br /> Techrology � Mobile laboratory Division <br /> Scientific Division <br /> Environmental Laboratories <br /> II Quality Control ' <br /> A. Protect 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 operation and <br /> procedures cause false-positive analytical results for your sample , <br /> 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 /> C. Laboratory Control Spike. A Laboratory Control Spike (LCS) is a <br /> sample which is spiked with known analyte concentrations, andI <br /> analyzed at approximately 10% of the sample load in order to <br /> establish method specific control limits The LCS results associated <br /> with your samples are on the attached Laboratory Control Spike and <br /> - Laboratory Control Spike Duplicate Analysis-Resport <br /> D. Matrix Spike Results. A Matrix Spike is a sample which is spiked <br /> with known analyte concentrations, and analyzed at approximately <br /> 10% of the sample load in order to establish method-specific control ' <br /> limits The Matrix Spike results associated with your samples are on <br /> the attached Matrix Spike and Matrix Spike Duplicate Analysis <br /> Report <br /> Accuracy is measured by Percent Recovery as in ' <br /> % recovery = (measured concentration) x 100 <br /> (actual concentration) ' <br /> III Analysis_Results <br /> Results are on the attached data sheets <br /> 3050 Fite Circle, Suite 112 • Sacramento, California 95827 - (916) 362-8947 • FAX (916) 362-0947 <br />