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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 /> i <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 07/26/95 Matrix: Soil <br /> Concentration (mg/kg) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.973 1.895 2.03 97 93 4.0 <br /> Benzene 0.000 0.202 0.196 0.2 101 98 3.0 <br /> Toluene 0.000 0.204 0.200 0.2 102 100 2.0 <br /> Ethylbenzene 0.000 0.204 0.200 0.2 102 100 2.0 <br /> Xylenes 0.000 0.646 0.640 0.6 108 107 0.9 <br /> i <br /> TPH (diesel) N/A N/A N/A N/A N/A N/A N/A <br /> • TRPH 0.0 22 6 22.6 20.8 109 1.09 0.0 <br /> (oil & grease) <br /> % Rec. = (M$ - Sample) / amount spiked x 100 <br /> RPO = (MS - MSD) / (MS + MSD) x 2 x 100 <br />