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' L1177A XLS Page 13 of 14 <br /> GEOTEST Work Ordar# 11177A <br /> GEDTEST Project# 970530-05 <br /> GEOTEAT Client IN S75-71012 <br /> An Environmental Monitonng and Testing Service <br /> (310}498-9515 (800)6245744 <br /> ' QUALITY ASSURANCEIQUALITY CONTROL SUMMARY <br /> Analyst VN <br /> Preparation Method 5030 <br /> Matrix Water <br /> ANALYSIS OF VOLATILE ORGANICS BY GAS CHROMATOGRAPHY/PID <br /> BTEXMTBE BY EPA METHOD 8020 <br /> Matrix Matrix <br /> LCS Acceptable Spike Spike Dup Acceptable RPD Acceptable <br /> %Rec Range %Rec %Rec Range % Range <br /> ' Analysis Date 612197 6/2/97 6!2/97 <br /> Analyte <br /> Benzene 93 81-117 92 90 61-127 22 0-21 <br /> Toluene 94 78-110 92 91 61-116 11 0-16 <br /> Ethylbenzene 99 74-115 98 95 62-117 31 0-20 <br /> ' Total Xylenes 101 85-117 100 97 68-125 3 0 0-21 <br /> Methyl-t-butyl ether 97 70-130 84 83 50-150 1 2 0-21 <br /> 1 <br />