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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:510-798-1620 F=510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 12/01/97 Matrix: Soil <br /> Concentration (mg/kg) W Recovery <br /> Analyte Sample Amount RPD <br /> � (#79433) MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.761 1.811 2.03 87 89 2.8 <br /> Benzene 0.000 0.176 0.184 0.2 88 92 4.4 <br /> Toluene 0.000 0.186 0.194 0.2 93 97 4.2 <br /> Ethylbenzene 0.000 0.180 0.188 0.2 90 94 4.3 <br /> Xylenes 0.000 0.532 0.554 0.6 89 92 4.1 <br /> TPH(diesel) 0 280 283 300 93 94 1.2 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil and grease) .� <br /> t Rec. (MS - Sample) / amount spiked x 100 <br /> RPD (MS - MSD) / (MS t MSD) X 2 x 100 <br />