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WCA.MPBELL. ANALYTICAL INC. 110 2nd AventicSc,uih, #D7, Pacheco, CA 94553 <br /> Tc(c:51(1-798-1620 Fax:510-798-1.22 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 09/07/95 Matrix: Soil, <br /> Concentration (mg/kg) 4 Recovery <br /> Analyte Amount <br /> Sample MS RPD <br /> I� MSD Spiked M5 MSD <br /> TPH (gas) 0.000 4.986 1.861 2.03 <br /> Benzene 98 92 6. 5 <br /> 0.000 0. 198 0.204 0.2 99 102 3.0 <br /> Toluene 0.000 0.200 0.202 <br /> Eth lbenzene 0'2 100 101. I.O <br /> y 0.000 0.202 0.198 0.2 101 99 _ <br /> Xylenes 0.000 0.642 0.646 0.6 107 2 108 0.6 <br /> TPH (diesel) 0 319 316 300 <br /> 106 105 0.9 <br /> TRPH N/A NIA N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> 9: Ret. _ (MS Sample) / amount spiked x 100 <br /> RPD = (MS MSO) / (MS + MSD) x 2 x 100 <br />