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1 <br /> 110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> McCAl41PBELL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-1.622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date- 04/18-04/19/95 Matrix: Soil <br /> 1 <br /> Concentration (mg/kg) $ Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.734 1.689 2.03 85 83 2.6 <br /> Benzene 0.000 0.162 0.166 0.2 81 83 2.4 <br /> Toluene 0.000 0.174 0.172 0.2 87 86 1.2 <br /> Ethylhenzene 0.000 0.168 0.168 0.2 84 84 0.0 <br /> Xylenes 0.000 0.532 0.522 0.6 89 87 1.9 <br /> TPH (diesel) 0 289 296 300 96 99 2.2 <br /> TRPH 0.0 22.3 22.5 20.8 107 108 0.9 <br /> (oil & grease) <br /> % Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br />