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nseco <br /> A Coming Company <br /> DUPLICATE CONTROL SAMPLE REPORT <br /> Volatile Organics by GC/MS <br /> Concentration Accuracy Precision <br /> Analyte Spiked Measured Average(%) (RPp <br /> DCS1 DCS2 AVG DCS Limits DGS Limit <br /> Category: 8240-S <br /> Matrix: SOIL <br /> QC Lot: 20 JUN 91-02A <br /> Concentration Units: ug/kg <br /> 1,1-Dichloroethene 5000 4780 4750 4760 95 60-128 0.6 18 <br /> Trichloroethene 5000 5070 5020 5040 101 68-113 1 .0 20 <br /> Benzene 5000 5340 5220 5280 106 68-119 2.3 21 <br /> Toluene 5000 5230 5040 5140 103 72-108 3.7 10 <br /> Chlorobenzene 5000 5340 5110 5220 105 80-113 4.4 11 <br /> Category: 8240-SL <br /> i Matrix: SOIL <br /> QC Lot: 16 JUN 91-02A <br /> Concentration Units: ug/kg <br /> 1,1-Dichloroethene 50 55.9 56.6 56.2 113 54-144 1 .2 18 <br /> Trichloroethene 50 51.1 52.5 51.8 104 64-128 2.7 17 <br /> Benzene 50 53.3 54.1 53.7 107 69-132 1.5 21 <br /> Toluene 50 55. 1 54.4 54.8 110 73-126 1.3 17 <br /> Chlorobenzene 50 55.8 54.2 55.0 110 79-127 2.9 12 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> f <br /> I <br /> 1 <br />' i <br />