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f , <br /> 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: 07/22/98-07/23/98 Matrix: SOIL <br /> Concentration (mg/kg) I % Recovery <br /> Analyte Sample Amount I RPD <br /> 1 (#89942) MS MSD I Spiked I MS MSD <br /> TPH (gas) 0.000 1.927 2.031 2.03 95 100 5 .3 <br /> Benzene 0.000 0.198 0.172 0.2 99 86 14.1 <br /> Toluene 0.000 0.214 0.190 0.2 107 95 11.9 <br /> Ethylbenzene 0.000 0.192 0.180 0.2 96 90 6.5 <br /> Xylenes 0.000 0.582 0 .550 0 .6 97 92 5.7 <br /> TPH(diesel) 0 315 312 300 105 104 0.8 <br /> TRPH 0.0 24 .0 22.4 20.8 115 108 6.9 <br /> (oil and grease) <br /> Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD (MS - MSD) / (MS + MSD) x 2 x 100 <br />