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L%Enseco <br />CC>N.NG C- <br />I Sample Description <br />See the attached Sample Description Information. <br />The samples were received under chain -of -custody. <br />II Analysis Request <br />The following analytical tests were requested. <br />Lab ID Analysis Description <br />049811-1,3 Halogenated Volatile Organics <br />Aromatic Volatile Organics <br />®2,3,4 General Inorganics <br />Selected Metals <br />III Quality 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 <br />and procedures cause false -positive analytical results for your <br />samples. <br />No target parameters were detected in the method blanks associated <br />with your samples at the reporting limit levels noted on the <br />attached Method Blank Report. <br />C. Laboratory Control Samoles - The LCS Pro ramam <br />Duplicate Control Samples. A DCS is a well -characterized matrix <br />(blank water, sand or celite) which is spiked with certain target <br />parameters and analyzed at approximately 10% of the sample load in <br />order to establish method -specific control limits. The DCS <br />results associated with your samples are on the attached Duplicate <br />Control Sample Report. <br />Single Control Sample. An SCS consists of a control matrix that <br />is spiked with surrogate compounds appropriate to the method being <br />used. In cases where no surrogate is available, (e.g. metals or <br />conventional analyses) a single control sample identical to the <br />DCS serves as the control sample. An SCS is prepared for each <br />sample lot. Accuracy is calculated identically to the DCS. The <br />SCS results associated with your samples are on the attached <br />Single Control Sample Report. <br />