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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 /> 1 QC REPORT FOR VOCs (EPA 8240/8260 ) <br /> ' Date 11/26/97 Matrix AIR <br /> ' I I Concentration (ug/kg,ul Recovery 1 <br /> l Analyte l Sample I Amount I RPD l <br /> I 1# (83360) MS MSD I Spiked I MS MSD I <br /> 11, 1-Dichloroethel 0 109 0 105 0 l 100 0 1 109 105 3 7 1 <br /> ITrichloroethene I 0 92 0 95 0 l 100 0 I 92 95 3 2 <br /> (EDB 1 0 95 0 98 0 I 100 0 l 95 98 3 1 1 <br /> IChlorobenzene 1 0 101 0 101 0 I 100 0 I 101 101 0 0 1 <br /> ' (Benzene 1 0 99 0 101 0 1 100 0 1 99 101 2 0 <br /> IToluene 1 0 100 0 101 0 1 100 0 1 100 101 l e i <br /> li <br /> ' Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 144 <br /> r <br />