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Enseco <br /> w A Coming Compan} <br /> DUPLICATE CONTROL SAMPLE REPORT <br /> Metals Analysis and Preparation <br /> Concentration Accuracy Precision <br /> Analyte Spiked Measured Average(% (RPD <br /> DCS1 DCS2 AVG DCS Limits DCS L mit <br /> Category: ICP-S <br /> Matrix: SOIL T <br /> QC Lot: 08 JUL 91-N <br /> Concentration Units: mg/kg <br /> Aluminum 200 190 192 191 95 84-115 1.0 11 <br /> Antimony 50 44.3 45.2 44.8 90 81-115 2.0 10 <br /> Arsenic 50 45.7 45.8 45.8 92 82-115 0.2 10 <br /> Barium 200 193 193 193 97 85-115 0.3 10 <br /> Beryllium 5.0 4.97 5.05 5.01 100 70-110 1.6 10 <br /> Boron 100 96.0 97.2 96.6 97 85-115 1.2 10 <br /> Cadmium 5.0 4.51 4.62 4.56 91 81-118 2.3 15 <br /> Calcium 10000 10200 10300 10300 103 85-115 1.4 10 <br /> Chromium 20 18.6 19.1 18.8 94 84-115 2.6 17 <br /> Cobalt 50 46.9 47.5 47.2 94 80-115 1.3 10 <br /> Copper 25 24.7 24.9 24.8 99 81-115 0.9 10 <br /> Iron 100 93.5 95.0 94.3 94 85-115 1.6 14 <br /> Lead 50 46.5 48.1 47.3 95 80-115 3.6 11 <br /> Lithium 20.0 21.0 21.3 21.2 106 85-115 1.3 10 <br /> Magnesium 5000 5050 5100 5070 101 85-115 0.8 10 <br /> . ' Manganese 50.0 46.0 46 4 46.2 92 80-115 1.0 10 <br /> Molyybdenum 20.0 18.8 18.9 18.9 94 85-115 0.4 10 <br /> Nickel 50.0 46.8 46.5 46.6 93 80-115 0.8 10 <br /> Potassium 5000 5000 5040 5020 100 82-115 0.7 10 <br /> Selenium 200.0 188 191 189 95 84-115 1.4 10 <br /> Silver 5.0 4.22 4.35 4.28 86 62-115 3.0 10 <br /> Sodium 10000 9920 9970 9940 99 85-115 0.6 10 <br /> Thallium 200 192 195 194 97 68-110 1.7 10 <br /> Tin 400 361 368 364 91 80-122 2.0 10 <br /> Titanium 200.0 184 185 185 92 85-115 0.6 10 <br /> Vanadium 50.0 46.9 47 4 47.2 94 85-115 1 .2 10 <br /> Zinc 50 44.6 45.3 45.0 90 82-115 1.5 10 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> Ow <br />