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110 tad Avenue South, #D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALY'T'ICAL INC Tele 510-798-1620 Fay 510-798-1622 <br /> s <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date. 01/18/94 Matrix: Soil <br /> Concentration (mg/kg) 1§ Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.952 2.965 2.03 96 97 0.7 <br /> Benzene 0.000 0.198 0.192 0.2 99 96 3.1 <br /> Toluene 0.000 0.206 0.200 0.2 103 100 3.0 <br /> Ethylbenzene 0.000 0.204 0.200 0.2 _102 100 2.0 <br /> Xylenes 0.000 0.632 0.614 0.6 105 102 2.9 <br /> TPH (diesel) 0 312 312 300 104 104 0.0 <br /> TRPH 0.0 21.4 22.4 20.8 103 108 4.6 <br /> (oil & grease) <br /> X Rec. _ (M5 - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />