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F7� <br /> MTBE 7. ANAL�CAL INC 110 2nd Avenue South,#D7,Pacheco CA 94553 <br /> Tele 510-798-1620 F=510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 07/31/94 Matrix: Soil <br /> Concentration (mg/kg) Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.889 1.750 2.03 93 86 7.7 <br /> Benzene 0.000 0.200 0.202 0.2 100 101 1.0 <br /> Toluene 0.000 0.200 0.202 0.2 100 101 1.0 <br /> Ethylbenzene 0.000 0.200 0.202 0.2 100 101 1.0 <br /> Xylenes 0.000 0.610 0.612 0.6 102 102 0.3 <br /> TPH (diesel) 0 302 302 300 101 101 0.0 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> X Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />