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110 2nd Avenue Mouth,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-1622 <br /> QC REPORT <br /> Date: 04/15-04/22/93 Matrix: Soil <br /> Concentration (mg/kg) Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 1.752 1.676 2.03 86 83 4.5 <br /> Benzene 0.000 0.190 0.196 0.2 95 98 3.1 <br /> Toluene 0.008 0.188 0.200 0.2 90 96 6.2 <br /> Ethyl Benzene 0.000 0.196 0.202 0.2 98 101 3.0 <br /> Xylenes 0.024 0.580 0.606 0.6 93 97 4.4 <br /> TPH (diesel) 0 214 213 200 107 106 0.7 <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 - NSD) / (MS + MSD) x 2 x 100 <br />