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CHEMWEST ANALYTICAL LABORATORIES <br /> NITRATE-N <br /> Date(s) Analyzed: 01/15/91 Case 7443 <br /> thru: 01/17/91 Matrix: Water <br /> Amount <br /> Client CHEMWEST Detected <br /> ID ID (mg/L) <br /> ------------------------------------------------------------------ <br /> 68715 7443-1 38 <br /> 68716 7443-2 2 . 0 <br /> 68717 7443-3 4 . 7 <br /> 68718 7443-4 28 <br /> 68719 7443-5 18 <br /> 68720 7443-6 7 . 2 <br /> 68721 7443-7 10 <br /> 68722 7443-8 15 <br /> 68723 7443-9 15 <br /> 68724 7443-10 31 <br /> 68725 7443-11 1. 3 <br /> 68726 7443-12 2 . 6 <br /> 68727 7443-13 46 <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 1.5 96% <br /> MBSD MBSD 1. 5 93% <br /> ------------------------------------------------------------------ <br /> Relative % Difference = 3% <br /> The reporting limit for Nitrate-N is 0 . 10 mg/L. <br /> BRL: Below Reporting Limit. <br /> � q� Date Reported: <br /> v�4 <br /> Approved by: , 02/06/91 REV3 : 1.90 <br /> COMPUCHEM WESTERN DMSION <br />