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QoDuanterra i <br /> Em4ronmen[a! <br /> Services <br /> P� TRIX SPIKE/MATRIX SPIKE DUPLICATE QC REPORT <br /> olatile Organics by GC ` <br /> Project: 092397 <br /> 0- tegory: 8020-DP-S Aromatic Volatile Organics by Direct Purge :: f <br /> list: 8020-BTX-L-S Method: 8020 <br /> Matrix: SOIL II <br /> '-mpie: 092397-0001 <br /> Run: 25 MAR 97-11A <br /> ITRits ug/kg Units Qualifier: Wet wt. <br /> ---------- Concentration --------- 1 i, <br /> LSample MS MSD Spiked %Recovery Control RPD <br /> Analyte Result Result ResultMS/MSD MS MSD Limits %RPD Limit <br /> S" lzene NO 18.3 18. 7 20.0 91 93 65-135 2 .2 20 <br /> Toluene 1 .31 20.3 20. 7 2.0.0 95 97 65-135 1 .8 20 <br /> Ethylbenzene ND' 19.2 19.5 20.0 96 98 65-135 1 .6 25 <br /> X�,lenes (total ) ND 58.4 58.6 60.0 '1 97 98 65-135 0.50 25 <br /> i <br /> II <br /> it <br /> L <br /> .I <br /> ii <br /> ry <br /> 'f 3 <br /> I I <br /> NI = Not Detected <br /> I i3 <br /> Clculations are performed before rounding to avoid round-off� errors in calculated results. <br /> L i <br />