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�iivanterra Environmental Services MATRIX SPIKE/MAT2IX SPIKE DUPLICATE QC REPORT Metals Analysis ind Preparation _ Project: 092398 (cont.) Category: ICP-AD ICP Metals / Dissolved Test : ICP-CANT-AD Method: 6010 Matrix : AQUEOU3 Sample : 092525-0001 MS Run : 02 APR 97-A Units : mg/L ---------Concentration--------- Amount Acceptance Sample MS MSD Spiked %Recovery %RPD Limit Analyte Result Result Result MS MSD MS MSD Recov. RPD Antimony ND 0.523 0.538 0.500 0.500 105 108 2.7 80-120 20 Arsenic ND 2.06 2.09 2.00 2.00 103 104 1 .4 80-120 20 Barium ND 2.04 2.12 2.00 2.00 102 106 3.8 80-120 20 Beryllium ND 0.0516 0.0529 0.0500 0.0500 103 106 2.5 80-120 20 Boron 0.16 1.17 1 .21 1.00 1.00 101 105 3.5 80-120 20 Cadmium ND 0.0508 0.0504 0.0500 0.0500 102 101 0.79 80-120 20 Calcium 55.0 104 105 50.0 50.0 98 101 1 . 1 80-120 20 Chromium ND 0.204 0.206 0.200 0.200 102 103 0.49 80-120 20 Cobalt ND 0.500 0.513 0.500 0.500 100 103 2.6 80-120 20 Copper ND 0.251 0.260 0.250 0.250 100 104 3.7 80-120 20 Iron ND 1.05 1.07 1 .00 1.00 105 107 2.5 80-120 20 Lead ND 0.503 0.479 0.500 0.500 101 96 4.9 80-120 20 Magnesium 9.2 60.8 62.4 50.0 50.0 103 106 2.5 80-120 20 Manganese 0.013 0.525 0.537 0.500 0.500 102 105 2. 1 80-120 20 Molybdenum ND 1.03 1.05 1.00 1.00 103 105 2.0 80-120 20 Nickel ND 0.491 0.513 0.500 0.500 98 103 4.3 80-120 20 Selenium ND 2.03 2.05 2.00 2.00 101 102 1 .2 80-120 20 Silver ND 0.0490 0.0501 0.0500 0.0500 98 100 2.2 80-120 20 Sodium 228 276 284 50.0 50.0 NC NC NC 80-120 20 Thallium ND 2.00 NA 2.00 2.00 100 NC NC 80-120 20 Vanadium ND 0.496 0.508 0.500 0.500 99 102 2.3 80-120 20 Zinc ND 0.507 0.513 0.500 0.500 101 103 1 .2 80-120 20 NA = Not Applicable NC = Not Calculated, calculation not applicable. ND = Not Detected Calculations are performed before rounding to avoid round-off errors in calculated results.