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1 ` <br /> McCAMPBELL ANALYTICAL INC 110 2nd Avenue South, #D7, Pacheco,CA 94553 <br /> Tete 510-798-1620 Fax 510-798-1622 <br />' QC REPORT FOR HYDROCARBON ANALYSES <br />' Date: 09/08/94 Matrix: Water <br />' Concentration (ug/L) $ Recovery <br /> Analyte Amount RPD <br />' Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.0 106.2 102.2 100 106.2 102.2 3.8 <br /> 1 Benzene 0 10 9.9 10 100.0 99.0 1.0 <br /> Toluene 0 10.1 10 10 101.0 100.0 1.0 <br /> Ethyl Benzene 0 10.2 10 10 102.0 100.0 2.0 <br />' Xylenes 0 31.7 31.1 30 105.7 103.7 1.9 <br /> TPH (diesel) N/A N/A N/A N/A N/A N/A N/A <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 /> 1 <br />