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- � <br /> I Sample Description Erlsew <br /> Lab ID Client ID Matrix Date Sampled Containers <br /> 31251-001 MW-12 Water 4-Sep-87 2 CONTNERS <br /> -002 MW-1 Water 4-Sep-87 2 CONTNERS <br /> -003 MW-13 Water 4-Sep-87 2 CONTNERS <br /> -004 MW-3 Water 4-Sep-87 2 CONTNERS <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 /> 31251-1 thru 4 Total dissolved solids (TDS) <br /> Copper, lead <br /> III Quality Control <br /> A. Project S ecific OC. 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 /> 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 LCS <br /> results associated with your samples follow: <br /> Test: 200.7 LCS <br /> LCS ID: ICP090887ABW <br /> Concentration Units: mg/L <br /> Matrix Concentration Accuracy Precision <br /> Back round Measured % Recovery RPD <br /> Parameter mg L Spike LCS1 LCS2 LCS1 LCS2 Av. Limits LCS Limit <br /> Copper ND 0.25 0.236 0.241 94.4 96.4 95.4 88-108 2.1 9 <br /> Lead ND 0.50 0.482 0.480 96.4 96.0 96.2 88-105 0.42 13 <br />