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McCgMPBELL ANALYTICAL INC 110 2nd Avenue South,#D7,Pacheco,CA 94553 <br />' Tele 510-798-1620 Fax-510-798-1622 <br /> I <br />' QC REPORT FOR AA METALS <br />' Date: 02/17/95 Matrix: Soil <br />' Concentration $ Recovery <br /> Analyte (mg/kg,mg/L) Amount RPD <br />' Sample MS MSD Spiked MS MSD <br /> Total Lead 0.0 10.6 10.5 10 106 105 0.9 <br /> Total Cadmium 0.0 8.2 8.1 10 82 81 1.1 <br /> Total Chromium 0.5 9.3 8.6 10 89 82 8.1 <br /> Total Nickel 0.1 9.5 9.0 10 94 89 5.8 <br />' Total Zinc 0.7 9.7 9.3 10 90 86 4.6 <br />' STLC Lead N/A N/A N/A N/A N/A N/A N/A <br /> Total Copper N/A N/A N/A N/A N/A N/A N/A <br /> I <br /> % Rec. = (MS - Sample) / amount spiked x 100 <br /> RPD = (MES - NSD) / (MS + MSD) x 2 x 100 <br />