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4 <br /> GTEL Client ID GTROlCHV08 QUALITY CONTROL RESULTS <br /> Login Number W6120345 Volatile Organics <br /> 01 Project ID (number) 5297 85 Method EPA 8020A <br /> Project ID (name) CHEVRON/9 0959/103 W 11TH STREET/TRACY/CA Matrix Aqueous <br /> Matrix Spike(MS) Results <br /> GTEL Sample ID W6120385-03 MS ID MS12038503 <br /> Analysis Date 24-DEC-96 24-DEC-96 <br /> Units ug/L Sample Spike MS MS Acceptability Limits <br /> Analyte T^_ Conc Added Conc % Rec %Rec <br /> Benzene < 0 5 (0 000) 20 0 16 4 82 0 67-110T <br /> Toluene < 0 5 (0 120) 20 0 15 3 75 9 68-115 <br /> Ethylbenzene < 0 5 (0 000) 20 0 14 6 73 0 65-120 <br /> Xylenes (Total) < 0 5 (0 200) 60 0 45 2 75 0 62-119 <br /> Notes <br /> Values in parentheses in the sample concentration column are used for % recovery calculations <br /> i <br /> NEI/GTEL Wichita KS <br /> W6120345 6 <br />