TABLE IV-5 (cont'd) ESTIMATED UNWEATHERED ACTIVITY ON SURFACE AND EXPOSURE RATE AT ONE METER, RONGELAP ISLAND TS Nuc lide Reference Nuc lide H+0.5 Day Activity Per Unit Area, Ci Km~2 H+0.5 Day Exposure H+26 Day Activity -~Per Unit Area, Ci Km7~2 Rate, R h7! Rate, R h7! H+26 Day Exposure Pr-146 Nd~144 Nd-147 Nd-149 Pm-147 Pm-149 Pm-150 Pm-151 Sm-151 Sm-153 Sm-156 Eu-155 Ce-141 Ce-141 Nd-147 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 2.6x1073 4.7x10717 3.5x103 1.4x103 5.7x107! 4.7x103 3.8x103 4.3x103 5.1x1072 1.3x102 9.6x102 7.3x107! 5.2x1078 8.9x1073 9.8x1073 4.1x10711 1.0x1073 1.1x1071 2.5x1072 9.4x10711 1.2x1073 1.9x1073 6.8x1077 7.1x102 - 1.8x1073 ~ - Eu-157 Eu-158 Gd-159 Tb-161 U-237 U-239 Ce-14) Ce-141 Ce-141 Ce-141 U-237 Pu-239 6.5x102 2.1x1072 1.9x103 9.8x109 2.4x104 1.0x10~2 3.0x1073 5.2x107/ 1.4x1073 1.3x1076 5 .4x1072 8.1x1079 7 1.7x103 - 3.8x1073 - 5.7x10710 3.2x10-2 4.31079 Eu~156 Np-237 Np-239 Pu-239 Ce-141 U-237 Pu-239 Pu-239 3.5x101 1.1x1079 1.0x10° 4.3x1073 8.0x10~4 4.0x10712 3.0x107! - - - ~