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N. <br />110 2nd Avenue South, #137, Pacheco, CA 94553 <br />McCAMPBELL ANALYTICAL INC. Tele: 510-798-1620 Fa)c 510-798-1622 <br />QC REPORT FOR METALS <br />Date: 09/29/98 Matrix: SOIL <br />Extraction: TTLC <br />Analyte <br />Concentration <br />(mg/kg,mg/L) <br />Sample MS <br />MSD <br />I <br />I <br />Amount <br />Spiked <br />% Recovery <br />MS MSD <br />RPD <br />Arsenic <br />0.0 <br />5.0 <br />4.9 <br />5.0 <br />101 <br />98 <br />2.8 <br />[Selenium <br />0.0 <br />4.8 <br />4.7 <br />5.0 <br />96 <br />93 <br />2.2 <br />Molybdenum <br />0.0 <br />4.9 <br />4.9 <br />5.0 <br />99 <br />97 <br />1.3 <br />Silver <br />0.0 <br />0.5 <br />0.5 <br />0.5 <br />98 <br />102 <br />4.3 <br />Thallium <br />0.0 <br />4.8 <br />5.0 <br />5.0 <br />96 <br />100 <br />4.4 <br />Barium <br />0.0 <br />4.8 <br />4.9 <br />5.0 <br />95 <br />98 <br />3.2 <br />Nickel <br />0.0 <br />5.2 <br />4.9 <br />5.0 <br />104 <br />98 <br />5.8 <br />Chromium <br />0.0 <br />5.0 <br />4.6 <br />5.0 <br />100 <br />93 <br />7.8 <br />Vanadium <br />0.0 <br />4.8 <br />5.0 <br />5.0 <br />97 <br />100 <br />3.7 <br />Beryllium <br />0.0 <br />5.9 <br />5.9 <br />5.0 <br />117 <br />119 <br />1.2 <br />Zinc <br />0.0 <br />4.7 <br />4.7 <br />5.0 <br />95 <br />94 <br />0.3 <br />Kopper <br />0.0 <br />4.9 <br />5.0 <br />5.0 <br />99 <br />101 <br />2.0 <br />Antimony <br />0.0 <br />4.8 <br />4.9 <br />5.0 <br />96 <br />98 <br />1.2 <br />Lead <br />0.0 <br />4.9 <br />4.9 <br />5.0 <br />98 <br />98 <br />0.0 <br />Cadmium <br />0.0 <br />5.5 <br />5.4 <br />5.0 <br />110 <br />109 <br />1.4 <br />Cobalt <br />0.0 <br />5.2 <br />5.1 <br />5.0 <br />103 <br />103 <br />0.3 <br />Mercury <br />1 0.000 <br />1 <br />0.230 <br />0.230 <br />0.25 <br />92 <br />1 <br />92 <br />0.0 <br />1 <br />% Rec. _ (MS - Sample) / amount spiked x 100 <br />RPD = (MS - MSD) / (MS + MSD) x 2 x 100 <br />