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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:925-798-1620 Fax: 925-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 05/28/99-05/29/99 Matrix: SOIL <br /> Concentration (mg/kg) I &, Recovery <br /> Analyte Sample Amount I RPD <br /> ($02399) MS MSD I Spiked I MS MSD <br /> TPH (gas) 0.000 2.169 2.130 2.03 107 105 1.8 <br /> Benzene I 0.000 0.202 0 .192 0.2 101 96 5.1 <br /> Toluene 0.000 0.208 0.198 0.2 104 99 4.9 <br /> Ethylbenzene 0.000 0.208 0.202 0.2 104 101 2.9 <br /> Xylenes 0.000 0.624 0.604 0.6 104 101 3.3 <br /> TPH(diesel) 0 269 271 300 90 90 0.7 <br /> TRPH 0.0 23 .0 22.6 20.8 111 109 1.8 <br /> I (oil and grease) <br /> 6 Res. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />