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1 <br /> McCAMPBELL ANALYTICAL INC. 110 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> Tele 510-798-1620 Fax:510-798-1622 <br /> ' QC REPORT <br /> ' Date: 12/21-12/26/91 Matrix: soil <br /> Concentration (mg/kg) $ Recovery <br />' Analyte Amount RPD <br /> Sample MS MSD Spiked HS MSD <br /> TPH (gas) 0.00 2.25 2.05 2.03 111 101 9.2 <br /> Benzene 0.00 0.216 0.196 0.2 108 98 9.7 <br /> Toluene 0.00 0.216 0.21 0.2 108 105 2.8 <br /> Ethyl Benzene 0.00 0.216 0.214 0.2 108 107 0.9 <br /> Xylenes 0.00 0.648 0.65 0.6 108 108 0.3 <br /> TPH (diesel) 0 29 35 30 96 118 19.9 <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 - MSD) / (MS + MSD) x 2 x 100 <br /> J <br /> 1 <br /> t <br />