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110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 04/04-04/05/95 Matrix: Water <br /> Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.0 92.7 96.6 100 92.7 96.6 4.1 <br /> Benzene 0 9.4 8.7 10 94.0 87.0 7.7 <br /> Toluene 0 9.4 8.7 10 94.0 87.0 7.7 <br /> Ethyl Benzene 0 9.4 8.7 10 94.0 87.0 7.7 <br /> Xylenes 0 29.2 27 30 97.3 90.0 7 8 <br /> I <br /> TPH (diesel) 0 148 157 1.50 99 Y05 5.9 <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 /> 1 <br />