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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC.7 Tele:510-798-1620 Fax:510-798-1622 <br /> QC REPORT FOR EPA 8010/8020/EDB <br /> Date: 08/20/97 Matrix: Soil <br /> Concentration (ug/kg) % Recovery <br /> Analyte I Sample Amount RPD <br /> 1 (#75873) MS MSD Spiked MS MSD <br /> 11, 1-DCE I 0 99 102 I 100 99 102 3 .0 <br /> (Trichloroethene 1 0 90 92 I 100 90 92 2 .2 <br /> (EDB I N/A N/A N/A I N/A I N/A N/A N/A <br /> IChlorobenzene I 0 90 92 I 100 90 92 2 .2 <br /> I 1 1-1 1 I <br /> (Benzene I N/A N/A N/A I N/A I N/A N/A N/A <br /> (Toluene I N/A N/A N/A I N/A N/A N/A N/A <br /> IChlorobz (PID) I N/A N/A N/A 1 N/A N/A N/A N/A <br /> i I � <br /> Rec. = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />