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McCAMPBELL ANALYTICAL INC. 110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> Tele:510-798-1620 Fax: 510-798-16= <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 11/18-11/19/93 Matrix: Soil <br /> Concentration (mg/kg) Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> i <br /> i <br /> I <br /> TPH (gas) 0.000 1.675 1.585 2.03 83 78 5.5 <br /> Benzene 0.000 0.172 0.174 0.2 86 87 1.2 <br /> Toluene 0.000 0.184 0.178 0.2 92 89 3.3 <br /> Ethylbenzene 0.000 0.178 0.174 0.2 89 87 2.3 <br /> Xylenes 0.000 0.580 0.548 0.6 97 91 5.7 <br /> I TPH (diesel) N/A N/A N/A N/A N/A N/A N/A <br /> r■r <br /> TRPH 1.6 23.5 23.5 20.8 105 105 0.0 <br /> (oil & grease) <br /> % Rec. _ (MS Sample) / amount spiked x .100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />