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Emeco <br /> Coming Compan% <br /> DUPLICATE CONTROL SAMPLE REPORT <br /> Volatile Organics by GC <br /> Concentration Accuracy Precision <br /> Analyte Spiked Measured Average(%) RPD) <br /> DCS1 DCS2 AVG DCS Limits DR Limit <br /> Category: TRH-BTEX-S <br /> Matrix: SOIL <br /> QC Lot: 23 JUL 91-20A <br /> Concentration Units: ug/kg <br /> Benzene 5.0 4.81 4.84 4.82 97 75-123 0.6 13 <br /> Toluene 5.0 4.54 4.57 4.56 91 74-126 0.7 18 <br /> Gasoline 1000 1070 1020 1040 105 74-126 4.8 18 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results <br />