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110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC7 TeIe 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> ' Date: 05/26-05/27/95 Matrix: Soil <br /> ' Concentration (mg/kg) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 2.003 1.984 2.03 99 98 1.0 <br /> ' Benzene 0.000 0.178 0.182 0.2 _ 89 91 2.2 <br /> Toluene 0.000 0.174 0.184 0.2 87 92 5.6 <br /> Ethylbenzene 0.000 0.174 0.180 0.2 87 90 3.4 <br /> Xylenes 0.000 0.550 0.558 0.6 92 93 1.4 <br /> TPH (diesel) 0 318 313 300 106 104 1.5 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> ' (oil & grease) <br /> t <br /> ' % Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />