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McCAMPBELL ANALYTICAL INC 110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> Tele 510-798-1620 Fax. 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 09/03/95 Matrix: Soil <br /> Concentration (mg/kg) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.607 1 679 2.03 79 83 4.4 <br /> Benzene 0.000 0.166 0 160 0.2 83 80 3 7 <br /> Toluene 0.000 0 170 0.162 0.2 85 81 4.8 <br /> Ethylbenzene 0.000 0. 170 0.160 0.2 85 80 6.1 <br /> Xylenes 0.000 0. 544 0.508 0.6 91 85 6.8 <br /> TPH (diesel) 0 323 316 300 108 105 2.0 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> X Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />