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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: 08/21/97 Matrix: Soil <br /> Concentration (mg/kg) I o Recovery <br /> Analyte I Sample Amount I RPD <br /> I (#75873) MS MSD I Spiked I MS MSD <br /> TPH (gas) 0 .000 2 .064 2 .061 I 2 .03 102 102 0 .1 <br /> Benzene 0.000 0 .178 0.184 0 .2 89 92 3 .3 <br /> Toluene I 0 .000 0 .190 0 .194 0 .2 95 97 2 .1 <br /> Ethylbenzene 0 .000 0 .184 0 .188 0 .2 92 94 2 .2 <br /> Xylenes 0 .000 0 .556 0 .566 0 .6 93 94 1.8 <br /> TPH(diesel) 0 324 324 300 108 108 0.1 <br /> TRPH I 0 .0 23 .9 22 .5 20 .8 115 108 6.0 <br /> (oil and grease) <br /> Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />