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NEI/GTEL Client ID BLA01CHV08 QUALITY CONTROL RESULTS <br /> Login Number W7030012 Volatile Organics <br /> Project ID (number) 970225-K1 Method EPA 8020A <br /> o ect ID (name) CHEVRON/9-4275/2905 W BENJAMIN HOLT DR/STOCKTON/CA Matrix Aqueous <br /> Matrix Spike(MS) Results <br /> GTEL Sample ID W7030024-01 MS ID MS03002401 <br /> Anal sis Date 07-MAR-97 07-MAR-97 <br /> Units ug/L Sample Spike MS MS Acceptability Limits <br /> Analyte Conc Added Conc Z Rec %Rec <br /> Benzene < 0 6 (0 000) 20.0 19 7 98 5 67-110 <br /> ' Toluene < 0 5 (0 000) 20 0 19 2 96 0 68-115 <br /> Ethylbenzene < 0.5 (0 000) 20 0 17,8 89.0 65-120 - <br /> X lenes (Total) < 0 5 (0 000) 60 0 57 5 95 8 62-119 <br /> ' Notes <br /> Values in parentheses in the sample concentration coluan are used for X recovery calculations <br /> I <br /> I <br /> I <br /> 1 <br /> IREI/GTEL Wichita KS <br /> W7030012 6 <br />