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McCAMPBELL ANALYTICAL INC. 110 2nd Avenue South, #137,Pacheco,CA 94553 <br /> Tele:510-798-1620 Fax:510-798-1622 <br /> QC REPORT FOR VOCs (EPA 8240/8260 ) <br />' Date: 09/05/97 Matrix: Soil <br /> Concentration (ug/kg,ul I % Recovery <br /> Analyte Sample I Amount I RPD <br /> 1# (75874) MS MSD I Spiked I MS MSD <br /> I1-1 <br /> 11, 1-Dichloroethel 0 .0 100 . 0 97 . 0 100 I 100 97 3 . 0 <br />' iEDBchloroethene 1 0 .0 95. 0 89. 0 100 95 89 6 .5 <br /> IChlorobenzene I 0 .0 97. 0 93 . 0 ' 100 97 93 4 .2 <br /> Benzene I 0 .0 105. 0 101 .0 I 100 I 105 101 3 . 9 <br />' IToluene 0 . 0 101. 0 100 .0 100 101 100 1. 0 <br /> I <br />' Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSC]) / (MS + MSD) x 2 x 200 <br /> I <br /> I <br /> I <br />