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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-1622 <br /> QC REPORT FOR METALS <br /> Date: 07/14/98 Matrix: SOIL <br /> Extraction: TTLC <br /> Concentration % Recovery <br /> Analyte I (mg/kg,mg/L) Amount RPD <br /> Sample MS MSD Spiked MS MSD <br /> Arsenic 0.0 4 .9 4.9 1 5.0 98 99 0 .7 <br /> (Selenium 0.0 4.7 4 .8 1 5.0 95 96 1.1 <br /> Molybdenum 1 0.0 4.9 4 .9 1 5.0 97 98 1.4 <br /> Silver 1 0.0 0.5 0.5 0 .5 103 104 0 .4 <br /> Thallium 1 0.0 4 .9 4 .8 5.0 97 96 1.5 <br /> Barium 1 0.0 4.5 4 .5 5 .0 89 90 0.5 <br /> Nickel 1 0 .0 4.7 4.8 5.0 95 96 1.1 <br /> Chromium 1 0 .0 4.6 4.7 5.0 92 94 1.5 <br /> Vanadium 1 0 .0 4.8 4 .8 5.0 96 97 0.6 <br /> Beryllium 1 0 .0 5.3 5.3 5.0 106 106 0.6 <br /> Zinc 1 0.0 4.9 4.9 5 .0 97 98 1.2 <br /> Copper 1 0.0 4 .6 4 .6 5.0 92 92 0 .6 <br /> Antimony 1 0.0 4 .7 4.7 5.0 94 94 0.7 <br /> Lead 1 0.0 4 .6 4.7 5.0 93 94 1.2 <br /> Cadmium 1 0 .0 5.0 5.0 5.0 99 101 1.2 <br /> Cobalt 1 0.0 4.7 4 .8 1 5.0 94 95 1.3 <br /> Mercury 1 0.000 0.264 0.256 0 .25 106 102 3 .1 <br /> Rec. _ (MS - Sample) / amount spiked x 100 <br /> RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />