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E7WCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7, Pacheco,CA 94553 <br /> Tele 510-798-1670 Fax 510-798-1622 <br /> i <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 09/07/95 Matrix: Soil <br /> Concentration (mg/kg) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.986 1.861 2.03 98 92 6.5 <br /> Benzene 0.000 0. 198 0.204 0.2 99 102 3.0 <br /> Toluene 0.000 0.200 0.202 0.2 100 101 1.0 <br /> Ethylbenzene 0.000 0.202 0 198 0.2 101 99 2.0 <br /> Xylenes 0.000 0. 642 0.646 0.6 107 108 0.6 <br /> TPH (diesel) 0 319 316 300 106 105 0.9 <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 />