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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 METALS <br /> Date: 04/28/95 Matrix: Soil <br /> Extraction: TTLC <br /> Concentration % Recovery <br /> Analyte (mg/kg,mg/L) Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> Arsenic 0.0 5.7 5.8 5.0 113 115 1.8 <br /> Selenium 0.0 5.1 5.1 5.0 101 103 1.4 <br /> Molybdenum 0.0 5.2 5.2 5.0 103 103 0.4 <br /> Silver 0.0 0.6 0.6 0.5 116 116 0.0 <br /> Thallium 0.0 2.6 2.7 2.5 105 106 0.8 <br /> Barium 0.0 5.5 5.5 5.0 109 110 1.1 <br /> Nickel 0.0 5.1 5.1 5.0 102 103 0.8 <br /> Chromium 0.0 5.1 5.1 5.0 101 102 0.6 <br /> Vanadium 0.0 4.9 4.9 5.0 98 98 0.2 <br /> Beryllium 0.0 5.0 4.9 5.0 99 98 0.8 <br /> Zinc 0.0 5.3 5.4 5.0 105 108 2.8 <br /> Copper 0.0 4.9 5.0 5.0 98 99 1.2 <br /> Antimony 0.0 5.4 5.5 5.0 109 109 0.4 <br /> Lead 0.0 5.3 5.3 5.0 106 106 0.2 <br /> Cadmium 0.0 5.0 5.1 5.0 101 102 1.4 <br /> Cobalt 0.0 5.0 4.9 5.0 100 99 1.0 <br /> Mercury 0.000 0.505 0.525 0.5 101 105 3.9 <br /> % Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />