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CHEMWEST ANALYTICAL LABORATORIES <br /> ARSENIC <br /> Date(s) Analyzed: 10/26/90 Case 6934 <br /> thru : 10/30/90 Matrix: Waste Water <br /> Amount <br /> Client CHEMWEST Detected <br /> ID ID (mg/L) <br /> ------------------------------------------------------------------ <br /> 62751 6934-1 3 . 2 <br /> 62752 6934-2 0. 97 <br /> 62753 6934-3 24 <br /> 62754 6934-4 BRL <br /> 62755 6934-5 BRL <br /> 62756 6934-6 0. 07 <br /> 62757 6934-7 BRL <br /> 62758 6934-8 BRL <br /> 62759 6934-9 0. 03 <br /> 62760 6934-10 0. 01 <br /> 62761 6934-11 BRL <br /> 62759 DUP 6934-9D 0. 03 <br /> 62759 MS 6934-9MS 0. 05 <br /> 62759 MSD 6934-9MSD 0. 05 <br /> ------------------------------------------------------------------ <br /> Spike Amount <br /> Client CHEMWEST Conc. % Detected <br /> ID ID (mg/L) Rec. (mg/L) <br /> ------------------------------------------------------------------ <br /> Method Blank MB BRL <br /> MBS MBS 0 . 020 104% <br /> MBSD MBSD 0. 020 104% <br /> ------------------------------------------------------------------ <br /> Relative % Difference = 0% <br /> Spike <br /> Client CHEMWEST Conc. % <br /> ID ID (mg/L) Rec. <br /> ------------------------------------------------------------------ <br /> 62759 MS 6934-9MS 0 . 020 88% <br /> 62759 MSD 6934-9MSD 0 . 020 90% <br /> ------------------------------------------------------------------ <br /> Relative % Difference = 2% <br /> The reporting limit for Arsenic is 0. 01 mg/L. <br /> BRL: Below Reporting Limit. <br /> Date Reported: <br /> Approved by: yH, 10/31/90 REV3 : 1. 90 <br /> COMPUCHEM WESTERN DIVISION <br />