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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> WCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date: 09/10/95 Matrix, Soil <br /> Concentration (mg/kg) % Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.934 1.895 2.03 95 93 2 0 <br /> Benzene 0.000 0.210 0.196 0.2 105 98 6 9 <br /> Toluene 0.000 0.216 0.200 0.2 108 100 7 7 <br /> Ethylbenzene 0.000 0.208 0 202 0 2 104 101 2 9 <br /> Xylenes 0.000 0.678 0 652 0.6 113 109 3.9 <br /> TPH (diesel) N/A N/A N/A N/A N/A N/A N/A <br /> • TRPH N/A N/A N/A N/A N/A N/A N/A <br /> (oil & grease) <br /> % Rec = (MS - Samp[e) / amount spiked x 100 <br /> RPD = (MS MSD) / (MS + MSD) x 2 x 100 <br />