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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 /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 04/26--04/27/95 Matrix: Soil <br /> Concentration (mg/kg) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> ' <br /> TPH (gas) 0.000 1.992 2.029 2.03 98 100 1.8 <br /> Benzene 0.000 0.190 0.190 0.2 95 95 0.0 <br /> Toluene 0.000 0.196 0.200 0.2 98 100 2.0 <br /> Ethylbenzene 0.000 0.196 0.202 0.2 98 101 3.0 <br /> Xylenes 0.000 0.606 0.592 0.6 101 99 2.3 <br /> 1 <br /> TPH (diesel) 0 294 298 300 98 99 1.3 <br /> TRPH 0.0 20.5 20.9 20.8 99 100 1.9 <br /> (oil & grease) <br /> % Rec. _ (MS - SaW e) / amount spiked x 100 <br /> RPD = (MS MSD) / (MS + MSD) x 2 x 100 <br /> r <br /> • <br />