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!;Enseco <br />DUPLICATE CONTROL SAMPLE REPORT <br />Metals Analysis and Preparation <br />* = RPD outside QC Limits <br />ND = Not detected. <br />NC = Not calculated, calculation not applicable. <br />NA = Not applicable. <br />Calculations are performed before rounding to avoid round -off errors in calculated results. <br />Concentration <br />Accuracv <br />Precision <br />Analyte <br />Spiked <br />Measured <br />Average(%) <br />(RPD) <br />DCS1 <br />DCS2 <br />AVG <br />DCS <br />Limits <br />DCS Limit <br />Category: ICP -A <br />Matrix: AQUEOUS <br />QC Lot: 06 NOV 89-X <br />Concentration Units: mg/L <br />Aluminum <br />2.00 <br />1.93 <br />1.94 <br />1.94 <br />97 <br />85-115 <br />0.5 <br />10 <br />Antimony <br />0.50 <br />0.486 <br />0.484 <br />0.485 <br />97 <br />85-115 <br />0.4 <br />10 <br />Arsenic <br />2.0 <br />1.98 <br />1.98 <br />1.98 <br />99 <br />85-115 <br />0.0 <br />10 <br />Barium <br />2.0 <br />2.01 <br />2.01 <br />2.01 <br />101 <br />85-115 <br />0.0 <br />10 <br />Beryllium <br />0.050 <br />0.0450 <br />0.0500 <br />0.0475 <br />95 <br />80-115 <br />11* <br />10 <br />Boron <br />1.0 <br />0.970 <br />0.980 <br />0.975 <br />98 <br />85-115 <br />1.0 <br />10 <br />Cadmium <br />0.050 <br />0.0460 <br />0.0490 <br />0.0475 <br />95 <br />80-117 <br />6.3 <br />10 <br />Calcium <br />100 <br />101 <br />101 <br />101 <br />101 <br />85-115 <br />0.0 <br />10 <br />Chromium <br />0.20 <br />0.207 <br />0.208 <br />0.208 <br />104 <br />85-115 <br />0.5 <br />10 <br />Cobalt <br />0.50 <br />0.493 <br />0.493 <br />0.493 <br />99 <br />85-115 <br />0.0 <br />10 <br />Copper <br />0.25 <br />0.251 <br />0.251 <br />0.251 <br />100 <br />85-115 <br />0.0 <br />10 <br />Iron <br />1.0 <br />NA <br />NA <br />NC <br />NC <br />85-115 <br />NC <br />10 <br />Lead <br />0.50 <br />0.509 <br />0.511 <br />0.510 <br />102 <br />85-115 <br />0.4 <br />10 <br />Lithium <br />0.20 <br />0.198 <br />0.193 <br />0.196 <br />98 <br />85-115 <br />2.6 <br />10 <br />Magnesium <br />50 <br />50.4 <br />50.3 <br />50.4 <br />101 <br />85-115 <br />0.2 <br />10 <br />AMML <br />Manganese <br />0.50 <br />0.482 <br />0.480 <br />0.481 <br />96 <br />85-115 <br />0.4 <br />10 <br />Molybdenum <br />0.20 <br />0.191 <br />0.192 <br />0.192 <br />96 <br />85-115 <br />0.5 <br />10 <br />Nickel <br />0.50 <br />0.479 <br />0.486 <br />0.482 <br />97 <br />83-115 <br />1.5 <br />10 <br />Potassium <br />50 <br />49.5 <br />49.6 <br />49.6 <br />99 <br />83-115 <br />0.2 <br />10 <br />Selenium <br />2.0 <br />1.98 <br />1.96 <br />1.97 <br />99 <br />85-115 <br />1.0 <br />10 <br />Silver <br />0.050 <br />0.0470 <br />0.0470 <br />0.0470 <br />94 <br />56-116 <br />0.0 <br />35 <br />Sodium <br />100 <br />100 <br />100 <br />100 <br />100 <br />85-115 <br />0.0 <br />10 <br />Thallium <br />2.0 <br />1.96 <br />1.98 <br />1.97 <br />99 <br />84-118 <br />1.0 <br />10 <br />Tin <br />0.40 <br />0.375 <br />0.384 <br />0.380 <br />95 <br />80-115 <br />2.4 <br />15 <br />Titanium <br />0.20 <br />0.180 <br />0.179 <br />0.180 <br />90 <br />85-115 <br />0.6 <br />10 <br />Vanadium <br />0.50 <br />0.487 <br />0.486 <br />0.486 <br />97 <br />82-115 <br />0.2 <br />20 <br />Zinc <br />0.50 <br />0.504 <br />0.503 <br />0.504 <br />101 <br />80-115 <br />0.2 <br />20 <br />Category: ICP -A <br />Matrix: AQUEOUS <br />QC Lot: 23 OCT 89-B <br />Concentration Units: mg/L <br />Aluminum <br />2.00 <br />2.07 <br />2.09 <br />2.08 <br />104 <br />85-115 <br />1.0 <br />10 <br />Antimony <br />0.50 <br />0.431 <br />0.436 <br />0.434 <br />87 <br />85-115 <br />1.2 <br />10 <br />Arsenic <br />2.0 <br />1.99 <br />1.98 <br />1.98 <br />99 <br />85-115 <br />0.5 <br />10 <br />Barium <br />2.0 <br />2.05 <br />2.07 <br />2.06 <br />103 <br />85-115 <br />1.0 <br />10 <br />Beryllium <br />0.050 <br />0.0480 <br />0.0490 <br />0.0485 <br />97 <br />80-115 <br />2.1 <br />10 <br />Boron <br />1.0 <br />0.990 <br />0.980 <br />0.985 <br />99 <br />85-115 <br />1.0 <br />10 <br />* = RPD outside QC Limits <br />ND = Not detected. <br />NC = Not calculated, calculation not applicable. <br />NA = Not applicable. <br />Calculations are performed before rounding to avoid round -off errors in calculated results. <br />