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110 2nd Avenue South, #FD7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax 510-7984622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 06/28-07/01/93. Hatrixc Soil <br /> Concentration (mg/kg) i Recovery <br /> Analyte Amount RPD <br /> Sample MS )LSD Spiked MS MSD <br /> TPH (gas) 0.000 1.659 1.541 2.03 82 76 7.3 <br /> Benzene 0.000 0.168 0.168 0.2 84 84 0.0 <br /> Toluene 0.000 0.166 0.168 0.2 83 84 1.2 <br /> Ethyl Benzene 0.000 0.162 0.160 0.2 81 80 1.2 <br /> Xylenes 0.000 0.472 0.470 0.6 79 78 0.4 <br /> TPH (diesel) 21 189 182 150 112 107 3.9 <br /> TRPH 1.1 25.5 25.5 20.8 117 117 0.0 <br /> (oil & grease) <br /> % Rec. _ (MS - Semple) / eemnt spiked x 100 <br /> NPD = (MS MSD) / (MS + MSD) x 2 x 100 <br /> s � <br />