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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 /> QC REPORT FOR HYDROCARBON ANALYSES <br /> Date* 09/10/93 Matrix: Soil <br /> Concentration (mg/kg) % Recovery <br /> Analyte Amount RPD <br /> sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 2.294 2.010 2.03 113 99 13.2 <br /> Benzene 0.000 0.168 0.168 0.2 84 84 0.0 <br /> Toluene 0.000 0.194 0.178 0.2 97 89 8.6 <br /> Ethyl Benzene 0.000 0.194 0.170 0.2 97 85 13.2 <br /> Xylenes 0.022 0.586 0.534 0.6 94 85 9.3 <br /> TPH (diesel) 0 333 320 300 111 107 4.3 <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 /> RPO = (MS - NSD) / (MS + MSO) x 2 x 100 <br />