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McCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> Tele 510-798-1620 Fax 510-798-1622 <br />' QC REPORT FOR HYDROCARBON ANALYSES <br />' Date: 10/04--10/06/93 Matrix: Soil <br /> concentration (mg/kg) $ Recovery <br />' Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> t TPH (gas) 0.000 1.966 2.037 2.03 97 100 3.5 <br /> Benzene 0.000 0.158 0.162 0.2 79 81 2.5 <br /> Toluene 0.000 0.170 0.174 0.2 85 87 2.3 <br />' Ethyl Benzene 0.000 0.170 0.174 0.2 85 87 2.3 <br /> Xylenes 0.000 0.524 0.532 0.6 87 89 1.5 <br /> TPH (diesel) 0 322 317 300 107 106 1.6 <br />' TRPH 0.0 21.0 21.5 20.8 101 103 2.4 <br /> (oil & grease) <br />' % Rec (MS - Sample) / amount spike! x 100 <br />' RPO = (MS - MSD) / (MS + MM) x 2 x 100 <br /> 1 <br />