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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: 01/17-01./18/95 Matrix: Water <br /> Concentration (ug/L) $ Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.0 94.2 90.5 100 94.2 90. 5 4.0 <br /> Benzene 0 9.7 9 10 97.0 90.0 7.5 <br /> Toluene 0 10.1 9.2 10 101.0 92.0 9.3 <br /> Ethyl Benzene 0 9.9 9.1 10 99.0 91.0 8.4 <br /> Xylenes 0 30.4 28.2 30 101.3 94.0 7.5 <br /> TPH (diesel) 0 148 151 150 98 101 2.2 <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 /> I <br />