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110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> McCAMPSELL ANALYTICAL INC. Tele: 510-798-1620 Fax: 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 11/19-11/21/93 Matrix: Water <br /> I <br /> Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSB Spiked MS MSD <br /> TPH (gas) 0.0 110.1 113.3 100 110.1 113.3 2.9 <br /> Benzene 0 11.2 10.5 10 112.0 105.0 6.5 <br /> Toluene 0 10.6 10.1 10 106.0 101.0 4.8 <br /> Ethyl Benzene 0 10.6 10 10 106.0 100.0 5.8 <br /> Xylenes 0 32.6 30.6 30 108.7 102.0 6.3 <br /> TPH (diesel) 0 158 146 150 105 97 8.2 <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 /> 4 <br /> k <br />