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110 2nd Avenue South, #D7, Pacheco, CA 9455 <br /> McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-162' <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> i <br /> Date: 08/08/95 Matrix: Water <br /> Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br /> Sample NS MSD Spiked MS MSD <br /> TPH (gas) 0.0 96.8 111.1 100 97 111 13.7 <br /> Benzene 0 9.6 9 10 96.0 90.0 6.5 <br /> Toluene 0 9.9 9.4 10 99.0 94.0 5.2 <br /> Ethyl Benzene 0 10 10 10 100.0 100.0 0.0 <br /> Xylenes 0 31.3 31.5 30 104.3 105.0 0.6 <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 = (NS - MSD) / (NS + MSD) x 2 x 100 <br />