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McQAMPBELL ANALYTICAL INC. 1102nd Avenue South, #D7, Pacheco,CA 94553 <br /> Tele:510-798-1620 Fax: 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 10/11/95 Matrix: Soil <br /> Concentration (mg/kg) 8 Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 2.038 2.066 2.03 100 102 1.4 <br /> Benzene 0.000 0.182 0.178 0.2 91 89 2.2 <br /> Toluene 0.000 0.180 0.176 0.2 90 88 2.2 <br /> Ethylbenzene 0.000 0.182 0.180 0.2 91 90 1.1 <br /> Xylenes 0.000 0.568 0.562 0.6 95 94 1.1 <br /> TPH (diesel) 0 314 295 300 105 98 6.1 <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 />