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110 2nd Avenue South, #D7, Pacheco,CA 94553 <br />' McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax-- 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 11/04-11/06/93 Matrix. Soil <br /> Concentration (mg/kg) $ Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0 000 1 852 1.753 2.03 91 86 5.S <br /> Benzene 0.000 0.182 0.172 0 2 91 86 5.6 <br /> Toluene 0.000 0.164 0.176 0.2 92 88 4.4 <br /> Ethylbenzene 0.000 0.180 0.168 0 2 90 84 6 9 <br /> Xylenes 0.000 0 560 0.534 0.6 93 89 4.8 <br /> TPH (diesel) 0 291 292 300 97 97 0.1 <br /> TRPH 0.0 8.0 7 8 8.32 96 94 2.5 <br /> (oil & grease) <br /> ' % Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSU) / (MS + MSD) x 2 x 100 <br /> • <br />