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Enseco <br /> I Sample Description <br /> Lab ID Client ID Matrix Date Sampled Containers <br /> 31799-001 MW-12 Water 08-Oct-87 2 CNTNERS <br /> -002 MW-1 Water 08-Oct-87 2 CNTNERS <br /> -003 MW-13 Water 08-Oct-87 2 CNTNERS <br /> -004 MW-3 Water 08-Oct-87 2 CNTNERS <br /> The samples were received under chain-of-custody. <br /> II Analysis Request <br /> The following analytical tests were requested. <br /> Lab ID Anal sis Descri tion <br /> 31799-1 thru 4 Total Disso ved So ids <br /> Lead, Copper <br /> III Quality Control <br /> A. Pro'ect S ecific 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 data <br /> sheets in the Analytical Results section. <br /> C. Laboratory Control Sam les. An LCS is a well-characterized matrix <br /> an <br /> blank water, sd 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 LCS <br /> results associated with your samples follow: <br /> Test: 200.7 Water LCS <br /> LCS ID: ICP161087ABW <br /> Concentration Units: mg/L <br /> Concentration Accuracy Precision <br /> Measured % Recovery RPD <br /> Parameter Spike LCS1 LC52 LCS1 LCS2 Av. Limits LCS Limit <br /> Copper o.25 0.254 0.254 102 101 102 88-108 0.20 9 <br /> Lead 0.50 0.518 0.517 104 103 104 88-105 0.19 13 <br />