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Q.06anterra <br /> Environmental <br /> Sc rvcces <br /> DUPLICATE CONTROL SAMPLE REPORT <br /> Volatile Organics by GC <br /> LProject 081372 <br /> Category TPH-GBXM-S TPN and BTEX (Gasoline -- Medium level ) <br /> i Matrix SOIL <br /> QC Lot 25 APR 95-36A <br /> Concentration Units ug/kg <br /> --Concentration-----'- Accuracy PrecisionAvera e % (RPD) <br /> Analyte Spiked AVG <br /> g ( } <br /> DCS1 DCS2 AVG DCS Limits DCS Limit <br /> Benzene 2000 2030 2080 2060 103 70-130 2 4 20 <br /> Toluene 2000 2060 2170 2120 106 70-130 5 2 20 <br /> 200000 194000 204000 199000 100 70-130 4 9 20 <br /> Gasoline <br /> I <br /> -off errors in calculated results <br /> Calculations are performed before rounding to avoid round <br /> —MMEMENSEN.— <br />