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Aid <br /> McCAMPBELL ANALYTICAL INC. 110 2nd Avenue ud4#D7,Pacheco,CA 94553 <br /> Tele:510-798-1620 Pax 510-798-1622 <br /> QC REPORT <br /> Date: 03/09-03/11/93 Matrix: Soil <br /> Concentration (mg/kg) i Recovery <br /> Analyte Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> TPH (gas) 0.000 2.133 2.107 2.03 105 104 1.2 <br /> Benzene 0.000 0.208 0.210 0.2 104 105 1.0 <br /> Toluene 0.000 0.214 0.210 0.2 107 105 1.9 <br /> Ethyl Benzene 0.000 0.208 0.208 0.2 104 104 0.0 <br /> Xylenes 0.000 0.612 • 0.606 0.6 102 101 1.0 <br /> TPH (diesel) 0 304 305 300 101 102 0.0 <br /> TRPH 0 24 24 20.8 115 116 0.8 <br /> (oil & grease) <br /> % Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS . MSD) x 2 x 100 <br />