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McCAMPBELL ANALYTICAL INC. 110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> Tele:510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR EPA 8010/8020/EDB <br /> Date: 04/11/94 Matrix: Soil <br /> I <br /> Concentration (ug/kg) $ Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> 1,1-DCE 0 74 76 100 74 76 2.7 <br /> Trichloroethene 0 82 84 100 82 84 2.4 <br /> EDB 0 78 80 100 78 80 2.5 <br /> Chlorobenzene 0 90 92 100 90 92 2.2 <br /> Benzene 0 88 92 100 88 92 4.4 <br /> Toluene 0 94 92 100 94 92 2.2 <br /> Chlorobz (PID) 0 88 90 100 88 90 2.2 <br /> i <br /> % Rec. _ (MS - Samp(e) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> I <br /> I <br /> i <br /> I <br />