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Enseco <br /> A Coming Company <br /> DUPLICATE CONTROL SAMPLE REPORT <br /> Volatile Organics by GC <br /> I I <br /> Concentration Accuracy Precision <br /> (%Avera e <br /> Analyte Spiked Measured RPU <br /> Y P gg ) <br /> DCS1 DCS2 AVG DCS Limits DCS Limit <br /> Category: TPH-BTEX-S <br /> Matrix: SOIL <br /> QC Lot: 14 JUN 91-20A <br /> Concentration Units: ug/kg <br /> Benzene 5.0 4.99 4.93 4.96 99 75-123 1.2 13 <br /> Toluene 5.0 5.26 5.22 5.24 105 74-126 0.8 18 <br /> Gasoline 1000 1010 1110 1060 106 74-126 9.4 18 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> t <br />