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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR VOCs (EPA 8240/8260 ) <br /> Date 10/29/97 Matrix WATER <br /> tI Concentration (ug/kg,ul Recovery <br /> Analyte I Sample I Amount I RPD <br /> 1# (82070) MS MSD I Spiked I MS MSD <br /> 11, 1-Dichloroethel 0 109 0 105 0 I 100 0 I 109 105 3 7 1 <br /> ITrichloroethene 1 0 92 0 95 0 I 100 0 I 92 95 3 2 <br /> 1EDB 1 0 95 0 98 0 1 100 0 1 95 98 3 1 <br /> IChlorobenzene 1 0 101 0 101 0 1 100 0 1 101 101 0 0 1 <br /> (Benzene I 0 99 0 101 0 1 100 0 I 99 101 2 0 <br /> IToluene 1 0 100 0 101 0 I 100 0 I 100 101 1 0 <br /> 1 1 I <br /> 'k Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> • <br />