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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> ` WCAMPBELL ANALYTICAL INC. Tele:925-798-1620 Fax:925-798-1622 <br /> V <br /> I <br /> IQC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 07/27/98 Matrix: SOIL <br /> Concentration (mg/kg) % Recovery <br /> Analyte Sample Amount RPD <br /> 1 (#90423) MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.800 1.790 2 .03 89 88 0 .6 <br /> Benzene 0.000 0.182 0 .186• 0.2 91 93 2 .2 <br /> Toluene 0.000 0.200 0.204 0.2 100 102 2 .0 <br /> Ethylbenzene 0.000 0.186 0.184 0.2 93 92 1.1 <br /> Xylenes 0.000 0.554 0.546 0.6 92 91 1.5 <br /> TPH(diesel) 0 318 318 300 106 106 0 .1 <br /> TRPH 0.0 23.2 21.4 20.8 112 103 8.1 <br /> f i (oil and grease) <br /> 1 <br /> Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br />