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QlAuanterra <br /> Enviro=eaW <br /> semi <br /> DUPLICATE CONTROL SAMPLE REPORT <br /> Volatile Organics by GC/MS <br /> 10roJect: 094062 <br /> Category: 8260STO-A 8260, Aqueous <br /> Static limits - Do not up-date <br /> Testcode: 8260-LIN-STD-A Method: 8260A <br /> Matrix: AQUEOUS Concentration Units: ugg/L <br /> QC Lot: 15 JUL 97-4A Analyzed Date: 15 JUL 97 Time: 12:21 <br /> ---Concentration-------- Accuracy Precision <br /> Analyte Spiked -------Measured----- M RPDj <br /> DCS1 DCS2 DCS1 DCS2 Limits DIS Limit <br /> i,1-Dichloroethene 10.0 9.74 9.91 97 99 75-113 1.7 20 <br /> Benzene 10.0 9.55 9.70 96 97 78-116 1.6 20 <br /> Trichloroethene 10.0 8.40 8.76 84 88 70-110 4.2 20 <br /> Toluene 10.0 9.38 9.53 94 95 78-126 1 .6 20 <br /> Chlorobenzene 10.0 9.22 9.28 92 93 81-115 0.65 20 <br /> ---------Concentration-------- <br /> Surrogate Spiked -------Measured----- Accuracy %j <br /> DCS1 DCS2 DCS1 DC 2 Limits <br /> 1,2-Dichloroethane-d4 10 9.8 9.7 98 97 70-120 <br /> Toluene-d8 10 10 9.5 100 95 88-110 <br /> 4-Bromofluorobenzene 10 10 9.9 100 99 86-115 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> i <br />