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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: 09/20/95--09/21/95 Matrix Sozl <br /> ' Concentration (mg/kg) $ Recovery <br /> Analyte Amount RPD ' <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0 000 2 262 2 186 2.03 111 108 3.4 <br /> ' Benzene 0.000 0 200 0 202 0.2 100 101 1.0 <br /> Toluene 0 000 0 202 0.196 0 2 101 9B 3.0 <br /> Ethylbenzene 0.000 0 194 0.194 0.2 97 97 0.0 <br /> ' Xylenes 0.000 0 6io 0.600 0.6 102 100 1.7 <br /> • TPH (diesel) 0 287 285 300 96 95 0.5 <br /> 1 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> ' % Rec = (MS Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br /> 1 <br />