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NEI/GTEL Client ID BLA01CHVOB QUALITY CONTROL RESULTS <br /> Login Number W7030066 Volatile Organics <br /> • Project ID (number) 970226 F3 Method EPA 8020A <br /> Project ID (name) CHEVRON/9 1848/1257 YOSEMITE WEST/MANTECA/CA Matrix Aqueous <br /> Matrix Spike(MS) Results <br /> GTEL Sample ID W7030039-01 MS IO MS03003901 <br /> Analysis Date 11-MAR-97 12-MAR-97 <br /> Units ug/L Sample Spike MS MS Acceptability Limits <br /> Analyte Conc Added Conc X Rec XRec <br /> Benzene < 0 5 (0 124) 20 0 20 0 99 4 67-110 <br /> Toluene < 0 5 (0 0900) 20 0 19 4 96 6 68-115 <br /> £thylbenzene < 0 5 (0 000) 20 0 19 5 97 5 65-124 <br /> Xylenes (Total) < 0 5 (0 160) 60 0 59 3 98 6 62-119 <br /> GTEL Sample ID W7030060-01 MS ID MS03006001 <br /> Analysis Date 11-MAR-97 11-MAR-97 <br /> Units ug/L. Sample Spike MS MS Acceptability Limits <br /> Analyte Conc Added Conc X Rec XRec <br /> Benzene < 0 5 (0 000) 20 0 20 0 100 67-110 <br /> Toluene < 0 5 (0 000) 20 0 19 7 98 5 68-115 <br /> Ethylbenzene < 0 5 (0 000) 20 0 20 3 192 65-120 <br /> Xyl enes (Total) < 0 5 (0 000) 60 0 61 7 103 62-119 <br /> Notes <br /> values in parentheses in the sample concentration colLifn are used for X recovery calculations <br /> NEI/GTEL Wichita KS <br /> W7030066 6 <br />