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T— 110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tete 510-798-1620 Fax 510-798-1622 <br />' QC REPORT FOR HYDROCARBON ANALYSES <br /> Date. 06/30-07/01/95 Matrix: Soil <br />' Concentration (mg/kg) % Recovery <br /> Analyte Amount RPD <br />' sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.916 1.972 2 03 94 97 2.9 <br />' Benzene 0.000 0.180 0.188 0.2 90 94 4.3 <br /> Toluene 0.000 0.182 0.190 0.2 91 95 4.3 <br /> Ethylbenzene 0.000 0.184 0.190 0.2 92 95 3.2 <br />' Xylenes 0.000 0.596 0.610 0.6 99 102 2.3 <br /> TPH (diesel) 0 352 350 300 117 117 0.6 <br /> TRPH 0.0 19 1 19 2 20 96 96 0.5 <br />' (oil & grease) <br />' % Rec = (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - M50) / (MS + MSD) x 2 x 100 <br /> E <br />