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110 2nd Avcnue 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: 04/14-04/15/95 Matrix: Soil <br /> Concentration (mg/kg) Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.792 1.679 2.03 88 83 6.5 <br /> Benzene 0.000 0 172 0.170 0.2 86 85 1.2 <br /> Toluene 0.000 0.176 0.174 0.2 88 87 1.1 <br /> Ethylbenzene 0.000 0.178 0.174 0.2 89 87 2.3 <br /> Xylenes 0.000 0.552 0.540 0.6 92 90 2.2 <br /> TPH (diesel) 0 313 308 300 104 103 1.6 <br /> TRPH 0.0 20.8 20.8 20.8 100 100 0.0 <br /> (oil & grease) <br /> % Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> I <br />