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CHEMWEST ANALYTICAL LABORATORIES <br /> Total Chromium <br /> Date (s) Analyzed: 04-26-90 Case 5886 <br /> thru: 05-09-90 Matrix : Water <br /> Amount <br /> Client CHEMWEST Detected <br /> ID ID (mg/L) <br /> ------------------------------------------------------------------ <br /> 38899 5886-1 630 <br /> 38900 5886-2 480 <br /> 38901 5886-3 5700 <br /> 38902 5886-4 1900 <br /> 38903 5886-5 1000 <br /> 38904 5886-6 40 <br /> 38905 5886-7 0 .06 <br /> 38906 5886-8 BRL <br /> 38907 5886-9 BRL <br /> ------------------------------------------------------------------ <br /> The reporting limit for Total. Chromium is 0. 05 mg/l . <br /> Spike Amount <br /> Client CHEMWEST Conc. $ Detected <br /> ID ID (mg/L) Rec . (mg/L) <br /> ------------------------------------------------------------------ <br /> 388906 5886-8DUP BRL <br /> 388906 5886-8MS 2. 0 1088 <br /> 388906 5886-BMSD 2. 0 1068 <br /> Method Blank 5886-MB BRL <br /> Method Blank Spike 5886-MBS 1 . 0 1088 <br /> Method Elk Dup 5886-MBSD 1. 0 1098 <br /> ------------------------------------------------------------------ <br /> Relative 8 Difference for MS/MSD = 2% <br /> Relative 8 Difference for MBS/MBSD = 18 <br /> Approved by: REv4 : 1. 90 <br /> CHEMWEST ANALYTICAL LA9C2AT0RIES.!NC. <br />