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[� 10oaanterra <br /> j Environmental <br /> i Services <br /> '. LABORATORY CONTROL SAMPLE REPORT <br /> Volatile Organics by GC i! <br />{ Project: 092397 i <br /> Category: 8020-DP-S Aromatic Volatile Organics by Direct Purge <br /> Test: 8020-BTX-L-S ! <br /> Matrix: SOIL <br /> QC Lot: 25 MAR 97-111 QC Run: 2!5 MARS 97-IIA C <br /> Concentration Units: ug/kg <br /> s Concentration ; ; Accuracy(%) i <br /> Analyte Spiked Measured LCS Limits <br /> Benzene 20.0 19.5 97 80-120 <br /> Toluene 20.0 20.'11 .�� 100 75-125 <br /> Ethylbenzene 20.0 20,.3 101 75-125 <br /> Xylenes (total ) 50.0 58.!7 98 75-125 <br /> 1 ,3-Dichlorobenzene 20.0 190 95 70-130 <br /> i1 <br /> f � <br /> F <br /> R <br /> If <br /> I r <br /> ` Calculations are performed before rounding to avoid round-off errors in calculated results . <br /> y � ; <br />