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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:510-798-1620 I=510.79&1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> ' Date: 04/06/94 Matrix: Soil <br /> ' Concentration (mg/kg) Amount 8 Recovery <br /> Analyte RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 2.108 1.860 2.03 104 92 12.5 <br /> Benzene 0.000 0.172 0.184 0.2 86 92 6.7 <br /> Toluene 0.000 0.196 0.194 0.2 98 97 1.0 <br /> Ethylbenzene 0.000 0.188 0.192 0.2 94 96 2.1 <br /> Xylenes 0.000 0.618 0.618 0.6 103 103 0.0 <br /> TPH (diesel) 0 270 284 300 90 95 5.0 <br /> TRPH 4.0 21.4 21.2 20.3 105 <br /> 104 0.9 <br /> ' (oil & grease) <br /> ' % Rec. = (NS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) 1 (MS + NSD) x 2 x 100 <br /> 1 . <br />