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F N <br /> J <br /> Q.0oanterra <br /> Environmental <br /> Services <br /> LABORATORY CONTROL SAMPLE REPORT <br /> Volatile Organics by GC <br /> Project: 092398 <br /> Category: 8020-DP-S '; Aromatic Volatile Organics by Direct Purge <br /> Test: 8020-BTX-L-S E <br /> Matrix: SOIL <br /> QC Lot: 2.5 MAR '97 ,111 - QC Run: 25 MAR 97-11A `. <br /> Concentration Units:' ug/kg <br /> Concentration Accuracy(%) <br /> Analyte Spiked Measured LCS Limits <br /> Benzene 20.0 19.5 97 80-120 <br /> Toluene 20.0 20. 1 100 75-125 <br /> Ethylbenzene 20.0 20.3 101 75-125 <br /> Xylenes (total ) 60.0 58.7 98 75-125 <br /> �1 1 ,3-Dichlorobenzene 20.0 19.0 95 70-130 <br /> rCalculations are performed before rounding to avoid round=off errors in calculated results. <br />