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11 i67A XLS Page 7 of 8 <br /> GEOTEST Work Order# 11167A <br /> GEOTEST Prolc%&C1# 970528.04 <br /> GEOTESTClient 1D# 575-710 <br /> An Environmental Monitoring and Testing Service <br /> (310}498-9515 (800)6245744 <br /> ' QUALITY ASSURANCE/QUALITY CONTROL SUMMARY <br /> ' Analyst <br /> Preparation Method 5030 <br /> Matrix Water <br /> ANALYSIS OF VOLATILE ORGANICS BY GAS CHROMATOGRAPHY/PID <br /> BTEXMTBE BY EPA METHOD 8020 <br /> ' Matnx Matrix <br /> LCS Acceptable Spike Spike Dup Acceptable RPD Acceptable <br /> %Rec Range %Rec %Rec Range % Range <br />' Analysis Date 5130/97 5130197 5130197 <br /> Analyte <br />' Benzene 94 81-117 95 93 61-127 21 0-21 <br /> Toluene 94 78-110 95 92 61-116 3 2 0-16 <br /> Elhylbenzene 99 74-115 98 96 62-117 21 0-20 <br />' Total Xylenes 101 85-117 101 98 68-125 3 0 0-21 <br /> Methyl-t-butyl ether 96 70-130 88 92 50-150 4 4 0-21 <br /> 1 <br /> i <br />