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McCAMPBELL ANALYTICAL INC. 110 2nd Avenue South, #D7, Pachec0, CA 94553 <br /> Tele:510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 09/08-09/09/94 Matrix: Soil <br /> Concentration (mg/kg) 6 Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.757 1.784 2.03 87 88 1.5 <br /> Benzene 0.000 0.190 0.180 0.2 95 90 5.4 <br /> Toluene 0.000 0.196 0.188 0.2 98 94 4.2 <br /> Ethylbenzene 0.000 0.182 0.180 0.2 91 90 1.1 <br /> Xylenes 0.000 0.580 0.568 0. 6 97 95 2. 1 <br /> TPH (diesel) 0 311 301 300 104 100 3.4 <br /> TRPH 0.0 23.0 20.9 20.3 111 100 9. 6 <br /> (oil & grease) <br /> Rev. _ (MS - Sad e) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />