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110 2nd Avenue South, #D7, Pacheco, CA 94553 <br /> McCAMPBBLL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 12/02/94 Matrix: Soil <br /> Concentration (mg/kg) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1. 752 1.785 2.03 86 88 1.9 <br /> Benzene 0.000 0. 186 0.180 0.2 93 90 3.3 <br /> Toluene 0.000 0.192 0.186 0.2 96 93 3.2 <br /> Ethylbenzene 0.000 0.194 0.182 0.2 97 91 6.4 <br /> Xylenes 0.000 0. 596 0.556 0.6 99 93 6.9 <br /> TPH (diesel) 0 301 309 300 100 103 2. 5 <br /> TRPH 0.0 20.5 <br /> 20.4 20 103 102 0. 5 <br /> (oil & grease) <br /> ' X Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS MSD) / (MS + MSD) x 2 x 100 <br /> 1 <br />