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110 2nd Avenue South,#D7,.Pacheco,CA 94553 <br /> 7ACC <br /> MMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> ' Date: 08/27-08/29/93 Matrix: Soil <br /> concentration (mg/kg) Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> ' TPH (gas) 0.000 1.802 1.942 2.03 89 96 7.5 <br /> Benzene 0.000 0.174 0.178 0.2 87 89 2.3 <br /> Toluene 0.000 0.182 0.186 0.2 91 93 2.2 <br /> Ethyl Benzene 0.000 0.174 0.180 0.2 87 90 3.4 <br /> ' Xylenes 0.000 0.546 0.548 0.6 91 91 0.4 <br /> TPH (diesel) 68 365 398 300 99 110 8.7 <br /> TRPH N/A N/A N/A N/A N/A N/A N/A <br /> ' (oil & grease) <br /> ' % Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD (MS - MSO) / (MS + MSD) x 2 x 100 <br /> 1 <br />