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McCAMPBELL ANALYTICAL INC. 114 tad Avenue South, D7,Pacheco,CA 94553 <br /> Tele:510-798-1620 F=510-798-1622 <br /> it <br /> QC REPORT FOR EPA 8010/8020/EDB <br /> Date: 04/18/94 Matrix: Soil <br /> Concentration (ug/kg) % Recovery Analyte Amount .RPD <br /> Sample MS MSD Spiked MS MSD <br /> 1,1-DCE 0 7.2 72 100 72 72 0.0 <br /> Trichloroethene 0 88 96 100 88 96 8.7 <br /> EDB 0 108 96 100 108 96 11.8 <br /> Chlorobenzene 0 94 104 100 94 104 10.1 <br /> Benzene 0 94 94 100 94 94 0.0 <br /> Toluene 0 92 96 100 92 96 4.3 <br /> Chlorobz (PID) 0 94 94 100 94 94 0.0 <br /> % Rec. _ (MS - Sampie) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1� <br />