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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: 06/30/95-07/01/95 Matrix Water <br /> Concentration (ug/L) % Recovery <br /> Analyte Amount RPD <br />' Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0 0 100 3 102.1 100 100.3 102.1 1.8 <br />' Benzene 0 9 2 9 2 10 92.0 92.0 0.0 <br /> Toluene 0 9 9.3 10 90.0 93.0 3 .3 <br /> Ethyl Benzene 0 9 1 9 5 10 91.0 95 0 4.3 <br /> Xylenes 0 29 30.4 30 96.7 101.3 4. 7 <br /> TPH (diesel) 0 164 161 150 109 108 1. 7 <br /> TRPH 0 20300 20600 23700 86 87 1. 5 <br />' (oil & grease) <br /> % Ret = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSO) x 2 x 1D0 <br /> r <br />