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i <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 /> Dater 09/28/98-09/29/98 Matrix: SOIL <br /> Concentration (mg/kg) s Recovery <br /> Analyte j Sample Amount RPD <br /> 1 (#90231) MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 2 .144 1.923 2 .03 106 95 10 .9 <br /> Benzene 0.000 0.1.88 0.190 0.2 94 95 1 .1 <br /> Toluene 0.000 0.206 0.202 0.2 I 103 101. 2 .0 <br /> Ethylbenzene 0.000 0.198 0.194 0.2 99 97 2 .0 <br /> Xylenes 0.000 0 .592 0.580 0.6 99 97 2 .0 <br /> TPH(diesel) 0 314 309 300 105 103 1.5 <br /> TRPH N/A N/A N/A N/A i N/A N/A N/A <br /> (oil and grease) <br /> V Rec. a (MS - Sample) / amount spiked x 100 <br /> RPD (MS - MSD) / (MS + MSD) x 2 x 100 <br /> I <br />