Public Baseline Results

Public  baseline results are presented in the following table. To maintain confidentiality, no individual results are presented. To interpret the monitoring results, one should compare the percentage of results greater than adecision level (LC) for the operational monitoring counts to the same percentage for the baseline counts. If the operational monitoring percentage is statistically greater than the baseline percentage, this suggests that a particular radionuclide may now be present (or present at a greater frequency) in the local population. The percentage of results greater than LC for operational monitoring would be considered statistically different from the baseline percentage ifthe baseline percentage is not contained within the margin of error for the operational monitoring percentage

Count Results as of June 1, 2003

Radionuclide In Vivo Count Type Baseline Counts
(prior to 3/27/99)
n = 367
Public Monitoring Counts
(3/27/99 through 6/1/03)
n = 508
% of Results >aLC % of Results >aLC bMargin of Error (%)
241Am Lung 5 4 3 to 6
144Ce Lung 5 4 2 to 5
252Cf Lung 4 6 4 to 9
244Cm Lung 6 4 3 to 6
155Eu Lung 7 4 3 to 6
237Np Lung 4 4 2 to 5
210Pb Lung 4 5 3 to 7
Plutonium
Isotope
Lung 6 6 4 to 8
232Th
via 212Pb
Lung c34 c36 32 to 40
232Th Lung 5 6 4 to 7
232Th
via 228Th
Lung 4 5 3 to 7
233U Lung 6 9 7 to 12
235U
/ 226Ra
Lung 11 10 7 to 13
Natural
Uranium via 234Th
Lung 5 6 4 to 8
133Ba Whole Body 4 3 2 to 5
140Ba Whole Body 5 4 3 to 6
141Ce Whole Body 4 4 2 to 6
58Co Whole Body 4 3 2 to 5
60Co Whole Body c55 c31 27 to 36
51Cr Whole Body 6 5 3 to 7
134Cs Whole Body 2 2 1 to 4
137Cs Whole Body 28 22 18 to 25
152Eu Whole Body 7 6 4 to 8
154Eu Whole Body 4 3 2 to 5
155Eu Whole Body 4 4 2 to 6
59Fe Whole Body 4 6 4 to 8
131I Whole Body 5 3 1 to 5
133I Whole Body 3 4 2 to 5
192Ir Whole Body 4 4 2 to 6
40K Whole Body 100 100 dNC
54Mn Whole Body c12 c10 8 to 13
103Ru Whole Body 2 1 0 to 2
106Ru Whole Body 4 4 2 to 5
125Sb Whole Body 5 4 2 to 6
232Th
via 228Ac
Whole Body c35 c25 22 to 29
88Y Whole Body 8 6 4 to 8
65Zn Whole Body 0 0 dNC
95Zr Whole Body 7 5 3 to 6