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' • �� KLEINEELDER <br /> ' 3 LABORATORY ANALYSES <br /> Four water samples were delivered under chain—of—custody to APPL on April <br /> ' 22, 1987. These samples were analyzed via atomic absorption (AA) for <br /> concentrations of 24 priority pollutant metals. Additionally, one blind <br /> duplicate sample, from MW-1, was submitted on April 20, 1987 to CAL/Enseco <br /> for analysis via ICP for concentrations of the same 24 priority pollutant <br /> ' metals. Both laboratories also conducted additional analyses which <br /> included EC, pH, total dissolved solids (TDS) , and major ions. Table 2 <br /> presents a summary of the analytical results from both laboratories with <br /> appropriate sample identification to reference the sample locations. <br /> Copies of the analytical results are attached as Appendix A. <br /> The blind duplicate sample from MW-1 and field blank sample were collected <br /> ' and submitted as quality assurance (QA) samples. Additional QA samples <br /> were collected and retained as spare samples in the event that they may be <br /> ' needed to confirm results of the routine samples. The following <br /> observations are noted with respect to the QA results: <br /> ' o The field blank analytical results indicate the concentrations of <br /> constituent are less than detection limits for all of the <br /> ' priority pollutant metals analyzed except zinc. Zinc was <br /> detected at 0.04 mg/L. Bicarbonate, total alkalinity, chloride, <br /> ' and sulfate were also measured at concentrations greater than <br /> their respective detection limits. <br /> ' o The MW-1 results reflect similar concentrations for the majority <br /> of constituents/parameters as measured by the two analytical <br /> laboratories on routine versus duplicate analyses. The largest <br /> ' differences are in the reported concentrations of chromium, <br /> mercury, selenium, thallium, and zinc. <br /> 57-87-621 4 <br />