EXPOSURE RATES CALCULATED FROM SOIL SAMPLE DATA 287 ag BPa, 125 op Location 5 Total activity per cm 368 pe 42 pc 32 pe Calculated from concentration in soil sample Inferred from field spectrum 19 wr/hr 9 uxr/hr 1 pr/hr 23 ur/hr 11 ur/hr 4 wxr/hr Percentage of total exposure 57% 32% 9% 61% 30% 9% rate based on soil analysis (see p. 11) Percentage of total exposure rate from field spectrometer and ionization chamber data Location 7 Total activity per em 2240 pe 79 pe 242 pe Calculated from concentration in soil sample 157 wr/hr 25 ur/hr 10 r/hr Inferred from field spectrum 84 ur/hr 20 wr/hr 10 ur/hr Percentage of total exposure 82% 7% 9% 74% 17% 9% rate based on soil analysis (see p. 11) Percentage of total exposure rate from field spectrometer data and ionization chamber -~ 2O -