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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 HYDROCARBON ANALYSES <br /> Date: 08/20/97 Matrix: Soil <br /> Concentration (mg/kg) % Recovery <br /> Analyte I Sample Amount I RPD <br /> 1 ('#75873) MS MSD Spiked MS MSD <br /> TPH (gas) I 0.000 1.783 1.846 2 .03 88 91 3 .5 <br /> Benzene 0.000 0.182 0 .188 I 0 .2 91 94 3 .2 <br /> Toluene 0.000 0 .190 0 .192 0 .2 95 96 1.0 <br /> Ethylbenzene 0 .000 0.188 0 .190 I 0 .2 I 94 95 1.1 <br /> Xylenes 0.000 0.576 0 .586 0 .6 96 98 1.7 <br /> TPH(diesel) 0 272 264 300 91 88 2 .8 <br /> TRPH I 0 .0 24.0 24 .6 I 23 .7 101 104 2 .5 <br /> (oil and grease) <br /> Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />