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AMPBELL ANALYTICAL INC. 110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> McC <br /> Tele:510-798-1620 Fax:510-798-1622 <br /> 1 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br />' Date: 12/06-32/07/94 Matrix: Soil <br />' Concentration (mg/kg) $ Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.818 1.852 2.03 90 91 1.9 <br /> Benzene 0.000 0.174 0. 178 0.2 87 89 2.3 <br /> Toluene 0.000 0.184 0.184 0.2 92 92 0.0 <br /> Ethylbenzene 0.000 0.182 0.186 0.2 91 9.3 2.2 <br /> Xylenes 0.000 0.566 0.574 0.6 94 96 1.4 <br /> TPH (diesel) 0 265 285 300 95 95 0.0 <br /> TRPH 0.0 22.0 22.4 20.8 106 108 1.8 <br /> (oil & grease) <br /> i <br />' % Rec. = (KS Sample) / amount spiked x 100 <br /> RPD = (KS - MSD) / (FSS + MSD) x 2 x 100 <br />