ee ee ee Table IV ESTIMATED INTEGRAL EXTERNAL FREE AIR GAMMA DOSES - (Rads) Time Interval - Years 5 10 30 70 Unmodified I, — .99 1.80 4.03 6.68 1. Village graveled (.78) (1.54) (3.28) (5,58) 3. + Northem islands plowed (.35) (0.74) 2, + Janet plowed (,50) (2.12) (3.81) (1.63) (3.03) Unmodified 1.08 1.93 4.34 7.14 Ip — (.90) (.59) (.38) (1.63) (1.08) (0.73) (3.76) (2.50) (1.81) (6.31) (4.38) (3.41) 0.47 0.83 1,92 (0.26) (0.48) (1.23) 0.77 1.42 (0.55) (0.27) (1.06) (0.52) 1. Village graveled = 2, + Janet plowed 3. + Northern islands plowed Unmodified II : 3. Northern islands Unmodified IiI 1, Village graveled 2. + Janet plowed IV Unmodifiea! 0.15 Mean population dose (see text) Unmodified 0.62 1.12 (0.52) 3, + all Northern (0.27) plowed (0.37) ‘ 0.40 7 Maneee *See HASL-170, ORP/SID 72-1 - 13 - (2.38) 3,27. 5.58 (2.52) (1.36) ; 2.60 (0.95) (2.27) (0.51) (1,32) 0.80 3,35 (4.48) ° (2.71).- 0.87 (0.68) , Sea level U.S.A. (80 mrad/yr)* Typical «© 0.29 1. Village graveled . 2. + Janet plowed an (1.00) 1.89 : ' 4,49 (4.01) (1,66) (3.08) 2.40 5.60 (2,60)