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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 /> 1 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br />' Date: 10/17-10/18/94 Matrix: Water <br />' Concentration (ug/L) $ Recovery <br /> Analyte Amount RFD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.0 101.7 106.0 100 101.7 106.0 4.1 <br />' Benzene 0 10.8 10.9 10 108.0 109.0 0.9 <br /> Toluene 0 10.6 10.7 10 106.0 107.0 0.9 <br /> Ethyl Benzene 0 10.5 10.6 10 105.0 106.0 0.9 <br /> Xylenes 0 32.9 33 2 30 109.7 110.7 0.9 <br /> TPH (diesel) 0 160 165 150 107 110 3.2 <br /> TRPH 0 21900 23700 23700 92 100 7.9 <br /> (oil a grease) <br /> % Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br /> I <br />