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QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 07/22/93 Metrix: Soil <br /> Concentration (mg/kg) 8 Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.610 1.623 2.03 79 80 0.8 <br /> Benzene 0.000 0.178 0.178 0.2 89 89 0.0 <br /> Toluene 0.000 0.180 0.180 0.2 90 90 0.0 <br /> Ethyl Benzene 0.000 0.176 0.174 0.2 88 87 1.1 <br /> Xylenes 0.020 0.522 0.520 0.6 64 83 0.4 <br /> TPH (diesel) 0 305 311 300 102 104 2.1 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> I <br /> I <br /> % Rec = (MS - sample) / amount spiked x 100 <br /> RPD = (NS NSD) / (MS + MSD) x 2 x 100 <br />