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110 2nd Avenue South, #137,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-1622 <br /> QC REPORT FOR EPA 8010/8020/EDB <br /> Date: 08/25/97 Matrix: Soil <br /> 1 Concentration (ug/kg) % Recovery <br /> Analyte Sample Amount RPD <br /> 1 (#77621) MS MSD Spiked I MS MSD <br /> 11, 1-DCE 1 0 99 105 100 99 105 5.9 <br /> 1Trichloroethene 1 0 92 96 100 92 96 4 .3 <br /> 1EDB 1 N/A N/A N/A N/A 1 N/A N/A N/A 1 <br /> 1Chlorobenzene 1 0 93 95 1 100 1 93 95 2 .1 1 <br /> 1 1 1 1 <br /> 1Benzene 1 N/A N/A N/A N/A 1 N/A N/A N/A 1 <br /> 1Toluene 1 N/A N/A N/A N/A N/A N/A N/A 1 <br /> 1Chlorobz (PID) 1 N/A N/A N/A N/A 1 N/A N/A N/A 1 <br /> Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />