Sidlindiin “Mile wihentatetoovavem Accmaeanta ae tee peepepE Te Te eae iin abeghame fineoeatin i f J. J. KORANDA 1451 Table 4, Duplicate samples —=—= — ad er Sage0 x los 0 x 105 First analysis (T.U.) Loose Bound water water Sample Seawater, Mike Crater Livermore tapwater* Messerschmidia argentea, wood, Cactus Crater Messerschmidia argentea, wood, second sample from Cactus Crater area Messersthmidia argentea, S. end of Runit Island Messerschmidia argentea, Engebi Island. Second analysis (T.U.) Loose Bound water water 820 + 40 840 + 40 1410 + 50 1460 + 70 2970 + 50 3350 + 50 3100 + 100 6100 + 200f 410 +40 <70 <65 62044060 220 + 26 170 +20 330+32 <60 270+32 * Livermore tapwater (Hetch Hetchy Aqueduct water which represents surface runoff of precipitation) was utilized for duplicate sample analysis because of its ready availability. This tritium content is within the range of values occurring in North American precipitation since the beginning of nucleartesting. ¢ Two subsequent analyses yielded values of 3100 + 50 and 2960 + 50 T.U. Table 5. Tritium content of rain and seawater at Eniwetok Atoll Sample Location T.U. Lagoon seawater Lagoon seawater Lagoon seawater 10 ft below surface near center of lagoon 180 ft below surface at bottom of lagoon 1 m from bottom of Mike Crater Pacific Ocean seawater Marshall Islands, December 1963* Rainwater Eniwetok Island, August 1964 <60 <60 820 + 40 840 + 40 79 86 +3 * IAEA“) Table 6. Tritium and 4C content of animals collected at Eniwetok Atoll =—=— used 500+450 180 + 24 180 +22 Tritium units i Specimen i Location Loose water Bound water 81430 <95 20 +1 <60 270430 13646 Coconut crab Igurin Island reef Hermit crab Coenobita perlatus Killer clam Tridacna crocea Sanildefonso Island Mike Crater Runit Island reef 96 + 21 Igurin Island reef 84427 187 +27 Birgus latro Groupers Epinephalus merrai | <80 170 +20 14 Cc 0 (A%) —-143 , 164+4 Groupers Runit Island reef Epinephalus merrai Surgeonfish Runit Island reef <39 Groupers Epinephalus merrai Sanildefonso Island Mike Crater <60 <60 216 +7 <60 90433 18547 Acanthurus triostegus Surgeonfish Acanthurus triostegus Sanildefonso Island Mike Crater . 110+ 32 2444 400 + 80 20 +4