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0 Tw (a)Tj 0 Tc -0.84 Tw ( )Tj -0.078 Tc 0 Tw (measured)Tj 0 Tc -0.84 Tw ( )Tj -0.1584 Tc 0 Tw (value)Tj 0.06 Tc T* (that)Tj 0 Tc -0.6 Tw ( )Tj -0.282 Tc 0 Tw (is)Tj 0 Tc -0.6 Tw ( )Tj -0.18 Tc 0 Tw (less)Tj 0 Tc -0.6 Tw ( )Tj -0.066 Tc 0 Tw (than)Tj 0 Tc -0.84 Tw ( )Tj 0.0696 Tc 0 Tw (zero.)Tj -0.074 Tc -0.6552 Tw ( Such a negative result occurs when random effects in the measurement p\ rocess)Tj -0.0504 Tc 0 Tw T* (cause)Tj 0 Tc 0.36 Tw ( )Tj -0.008 Tc 0 Tw (the)Tj 0 Tc 0.36 Tw ( )Tj -0.078 Tc 0 Tw (measured)Tj 0 Tc 0.36 Tw ( )Tj -0.1584 Tc 0 Tw (value)Tj 0 Tc 0.36 Tw ( )Tj -0.024 Tc 0 Tw (for)Tj 0 Tc 0.36 Tw ( )Tj -0.008 Tc 0 Tw (the)Tj 0 Tc 0.36 Tw ( )Tj -0.186 Tc 0 Tw (sample)Tj 0 Tc 0.36 Tw ( )Tj 0.252 Tc 0 Tw (to)Tj -0.0485 Tc 0.4522 Tw ( be less than that of the blank or background, which is)Tj 0.012 Tc 0 Tw T* (subtracted)Tj 0 Tc 1.08 Tw ( )Tj -0.132 Tc 0 Tw (from)Tj 0 Tc 1.08 Tw ( )Tj -0.024 Tc 0 Tw (it.)Tj -0.0323 Tc 1.1123 Tw ( From April 1991 to December 1995, negative results were reported as \223\ not)Tj 0.032 Tc 0 Tw T* (detected\224)Tj 0 Tc 1.08 Tw ( )Tj 0.162 Tc 0 Tw (or)Tj 0 Tc 1.08 Tw ( )Tj -0.0528 Tc 0 Tw (\223ND,\224)Tj 0 Tc 1.08 Tw ( )Tj -0.096 Tc 0 Tw (and)Tj 0 Tc 1.08 Tw ( )Tj -0.168 Tc 0 Tw (gam)Tj -0.216 Tc (m)Tj -0.048 Tc (a)Tj 0 Tc 1.08 Tw ( )Tj -0.243 Tc 0 Tw (analysis)Tj 0 Tc 1.08 Tw ( )Tj -0.0531 Tc 0 Tw (results)Tj 0 Tc 1.08 Tw ( )Tj 0.06 Tc 0 Tw (that)Tj 0 Tc 1.08 Tw ( )Tj -0.009 Tc 0 Tw (were)Tj 0 Tc 1.08 Tw ( )Tj -0.18 Tc 0 Tw (less)Tj 0 Tc 1.08 Tw ( )Tj -0.066 Tc 0 Tw (than)Tj 0 Tc 1.08 Tw ( )Tj -0.0792 Tc 0 Tw (their)Tj 0 Tc 1.08 Tw ( )Tj -0.0707 Tc 0 Tw (estimated)Tj 0 Tc 1.08 Tw ( )Tj -0.1004 Tc 0 Tw (measurement)Tj -0.0831 Tc T* (uncertainties)Tj 0 Tc -1.08 Tw ( )Tj -0.009 Tc 0 Tw (were)Tj 0 Tc -1.08 Tw ( )Tj -0.093 Tc 0 Tw (also)Tj 0 Tc -1.08 Tw ( )Tj 0.072 Tc 0 Tw (reported)Tj 0 Tc -1.08 Tw ( )Tj -0.078 Tc 0 Tw (as)Tj 0 Tc -1.08 Tw ( )Tj -0.0528 Tc 0 Tw (\223ND.\224)Tj -0.0545 Tc -0.9535 Tw ( In January 1996 both of these practices were discontinued.)Tj -0.087 Tc 0 Tw T* (Although)Tj 0 Tc -0.12 Tw ( )Tj -0.102 Tc 0 Tw (negative)Tj 0 Tc -0.12 Tw ( )Tj -0.1332 Tc 0 Tw (activities)Tj 0 Tc -0.12 Tw ( )Tj -0.004 Tc 0 Tw (are)Tj 0 Tc -0.12 Tw ( )Tj -0.2772 Tc 0 Tw (physically)Tj 0 Tc -0.12 Tw ( )Tj -0.1789 Tc 0 Tw (impossible,)Tj 0 Tc -0.36 Tw ( )Tj -0.008 Tc 0 Tw (the)Tj 0 Tc -0.12 Tw ( )Tj -0.196 Tc 0 Tw (inclusion)Tj 0 Tc -0.12 Tw ( )Tj -0.078 Tc 0 Tw (of)Tj 0 Tc -0.12 Tw ( )Tj -0.102 Tc 0 Tw (negative)Tj 0 Tc -0.12 Tw ( )Tj -0.0531 Tc 0 Tw (results)Tj 0 Tc -0.12 Tw ( )Tj -0.348 Tc 0 Tw (in)Tj 0 Tc -0.12 Tw ( )Tj -0.008 Tc 0 Tw (the)Tj 0 Tc -0.12 Tw ( )Tj 0.104 Tc 0 Tw (report)Tj -0.0817 Tc 0.2017 Tw T* (allows better statistical analysis of the data.)Tj -0.0771 Tc 0 Tw 0 -28.32 TD (Results)Tj 0 Tc 0.36 Tw ( )Tj -0.078 Tc 0 Tw (of)Tj 0 Tc 0.36 Tw ( )Tj -0.2016 Tc 0 Tw (gamma)Tj 0 Tc 0.36 Tw ( )Tj -0.204 Tc 0 Tw (analyse)Tj -0.0784 Tc 0.4624 Tw (s are still reported as \223ND\224 when gamma-emitting radionuclides are\ not)Tj 0.0507 Tc 0 Tw 0 -14.16 TD (detected.)Tj /TT1 12 Tf -0.0202 Tc 0.1402 Tw 166.8 -42.72 Td (Measurement Uncertainty)Tj /TT0 12 Tf -0.057 Tc 0 Tw -166.8 -28.08 Td (Each)Tj 0 Tc 0.36 Tw ( )Tj -0.078 Tc 0 Tw (measured)Tj 0 Tc 0.36 Tw ( )Tj -0.1584 Tc 0 Tw (value)Tj 0 Tc 0.36 Tw ( )Tj /TT2 12 Tf -0.048 Tc 0 Tw (y)Tj /TT0 12 Tf 0 Tc 0.36 Tw ( )Tj -0.282 Tc 0 Tw (is)Tj 0 Tc 0.36 Tw ( )Tj 0.072 Tc 0 Tw (reported)Tj 0 Tc 0.36 Tw ( )Tj -0.114 Tc 0 Tw (with)Tj 0 Tc 0.36 Tw ( )Tj -0.144 Tc 0 Tw (an)Tj 0 Tc 0.36 Tw ( )Tj -0.078 Tc 0 Tw (expanded)Tj 0 Tc 0.36 Tw ( )Tj -0.0862 Tc 0 Tw (uncertainty)Tj 0 Tc 0.36 Tw ( )Tj /TT2 12 Tf -0.024 Tc 0 Tw (U)Tj /TT0 12 Tf 0 Tc 0.36 Tw ( )Tj -0.048 Tc 0 Tw (=)Tj 0 Tc 0.36 Tw ( )Tj /TT2 12 Tf -0.048 Tc 0 Tw (k)Tj 0 Tc 0.36 Tw ( )Tj 0 Tw (u)Tj /TT2 7.2 Tf -0.0768 Tc 348.24 -2.64 Td (c)Tj /TT0 12 Tf 0.084 Tc 3.12 2.64 Td (\()Tj /TT2 12 Tf -0.048 Tc (y)Tj /TT0 12 Tf 0.102 Tc (\),)Tj -0.0918 Tc 0.5318 Tw ( which is determined)Tj -0.132 Tc 0 Tw -351.36 -14.16 Td (from)Tj 0 Tc -0.36 Tw ( )Tj -0.008 Tc 0 Tw (the)Tj 0 Tc -0.6 Tw ( )Tj -0.156 Tc 0 Tw (combined)Tj 0 Tc -0.6 Tw ( )Tj -0.012 Tc 0 Tw (standard)Tj 0 Tc -0.6 Tw ( )Tj -0.0862 Tc 0 Tw (uncertainty)Tj 0 Tc -0.6 Tw ( )Tj /TT2 12 Tf 0 Tw (u)Tj /TT2 7.2 Tf -0.0768 Tc 195.36 -2.64 Td (c)Tj /TT0 12 Tf 0.084 Tc 3.12 2.64 Td (\()Tj /TT2 12 Tf -0.048 Tc (y)Tj /TT0 12 Tf 0.084 Tc (\))Tj 0 Tc -0.6 Tw ( )Tj -0.096 Tc 0 Tw (and)Tj 0 Tc -0.6 Tw ( )Tj -0.008 Tc 0 Tw (the)Tj 0 Tc -0.6 Tw ( )Tj -0.0135 Tc 0 Tw (coverage)Tj 0 Tc -0.6 Tw ( )Tj 0.016 Tc 0 Tw (factor)Tj 0 Tc -0.6 Tw ( )Tj /TT2 12 Tf -0.048 Tc 0 Tw (k)Tj /TT0 12 Tf 0 Tc -0.6 Tw ( )Tj -0.048 Tc 0 Tw (=)Tj 0 Tc -0.6 Tw ( )Tj 0.06 Tc 0 Tw (2.)Tj -0.1232 Tc -0.4288 Tw ( The interval from )Tj /TT2 12 Tf -0.048 Tc 0 Tw (y)Tj /TT0 12 Tf 0 Tc -0.36 Tw ( )Tj /TT3 11.52 Tf 0.048 Tc 0 Tw (!)Tj /TT0 12 Tf 0 Tc -0.36 Tw ( )Tj /TT2 12 Tf -0.024 Tc 0 Tw (U)Tj /TT0 12 Tf 0.252 Tc -0.132 Tw -198.48 -14.16 Td (to )Tj /TT2 12 Tf -0.048 Tc 0 Tw (y)Tj /TT0 12 Tf 0.168 Tw ( + )Tj /TT2 12 Tf -0.024 Tc 0 Tw (U)Tj /TT0 12 Tf -0.1038 Tc 0.2238 Tw ( is estimated to have a level of confidence of approximately 95%.)Tj /TT1 12 Tf -0.0227 Tc 0.1427 Tw 185.76 -42.72 Td (Significant Figures)Tj /TT0 12 Tf -0.0585 Tc 0 Tw -185.76 -28.08 Td (Expanded)Tj 0 Tc -0.6 Tw ( )Tj -0.0831 Tc 0 Tw (uncertainties)Tj 0 Tc -0.6 Tw ( )Tj -0.004 Tc 0 Tw (are)Tj 0 Tc -0.6 Tw ( )Tj 0.072 Tc 0 Tw (reported)Tj 0 Tc -0.6 Tw ( )Tj 0.252 Tc 0 Tw (to)Tj 0 Tc -0.36 Tw ( )Tj 0.16 Tc 0 Tw (two)Tj 0 Tc -0.36 Tw ( )Tj -0.1985 Tc 0 Tw (significant)Tj 0 Tc -0.36 Tw ( )Tj -0.1005 Tc 0 Tw (figures.)Tj -0.02 Tc -0.34 Tw ( Measurement results are rounded to)Tj -0.0966 Tc 0.2166 Tw T* (the corresponding number of decimal places.)Tj /TT1 12 Tf 0.0032 Tc 0.1168 Tw 181.2 -42.72 Td (Detection Capability)Tj /TT0 12 Tf -0.06 Tc 0 Tw -181.2 -28.08 Td (The)Tj 0 Tc 0.36 Tw ( )Tj -0.0896 Tc 0.2096 Tw (minimum detectable concentrations \(MDCs\) for each radionuclide are sho\ wn)Tj 0 Tc 0.36 Tw ( )Tj -0.348 Tc 0 Tw (in)Tj 0 Tc 0.36 Tw ( )Tj -0.1368 Tc 0 Tw (Table)Tj 0 Tc 0.36 Tw ( )Tj 0.06 Tc 0 Tw (1.)Tj -0.06 Tc 0.42 Tw ( The)Tj -0.156 Tc 0.276 Tw T* (MDC is)Tj 0 Tc 0.36 Tw ( )Tj -0.1697 Tc 0 Tw (defined)Tj 0 Tc 0.36 Tw ( )Tj -0.078 Tc 0 Tw (as)Tj 0 Tc 0.36 Tw ( )Tj -0.008 Tc 0 Tw (the)Tj 0 Tc 0.36 Tw ( )Tj -0.36 Tc 0 Tw (minimum)Tj 0 Tc 0.36 Tw ( )Tj -0.0212 Tc 0 Tw (concentration)Tj 0 Tc 0.36 Tw ( )Tj 0.06 Tc 0 Tw (that)Tj 0 Tc 0.36 Tw ( )Tj -0.1704 Tc 0 Tw (gives)Tj 0 Tc 0.36 Tw ( )Tj -0.048 Tc 0 Tw (a)Tj 0 Tc 0.36 Tw ( )Tj 0.028 Tc 0 Tw (95%)Tj 0 Tc 0.36 Tw ( )Tj -0.1625 Tc 0 Tw (probability)Tj 0 Tc 0.36 Tw ( )Tj -0.078 Tc 0 Tw (of)Tj 0 Tc 0.36 Tw ( )Tj -0.008 Tc 0 Tw (detection)Tj 0 Tc 0.36 Tw ( )Tj -0.138 Tc 0 Tw (when)Tj 0 Tc 0.36 Tw ( )Tj -0.008 Tc 0 Tw (the)Tj -0.0999 Tc 0.2199 Tw T* (detection criteria are chosen to give only a 5% probability of false det\ ection in a blank sample.)Tj ET endstream endobj 13 0 obj 6830 endobj 14 0 obj 0 endobj 15 0 obj 0 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