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CHEMWEST ANALYTICAL LABORATORIES <br /> COPPER <br /> Dates) Analyzed: 08/01/91 Case 8477 <br /> thru: 08/02/91 Matrix: Water <br /> Amount <br /> Client CHEMWEST Detected <br /> ID ID' (mg/L) <br /> ------------------------------------------------------------------ <br /> 67837 8477-1 BRL <br /> 67838 8477-2 0.059 <br /> 67839 8477-3 0.21 <br /> 67840 8477-4 0.24 <br /> 67841 8477-5 502 <br /> 67842 8477-6 0. 11 <br /> 67843 8477-7 0. 073 <br /> 67844 8477-8 BRI, <br /> 67845 8477-9 BRL <br /> 67846 8477-10 BRL <br /> 67847 8477-11 BRL <br /> 67848 8477-12 BRL <br /> ------------------------------------------------------------------ <br /> Spike Amount <br /> Client CHEMWEST Conc. Detected % <br /> ID ID (mg/L) (mg/L) Rec. <br /> ------------------------------------------------------------------ <br /> Method Blank MB BRL <br /> MBS MBS 1.25 1. 25 100.20 <br /> MBSD MBSD 1.25 1.23 98. 60 <br /> -----'------------------------------------------------------------- <br /> Relative % Difference = 1. 60 <br /> The reporting limit for Copper is 0. 05 mg/L. <br /> BRL: Below Reporting Limit. <br /> Date Reported: <br /> Approved by: _ 08/16/91 REV3: 1.90 <br /> COMPUCHEM WESTERN DMSION <br />