OFFICIAL USE ONLY TABLE FOUR CONCENTRATIONS IN WATER ON ISLANDS IN THE PACIFIC AND ESTIMATED GAMMA DOSE RATES AT D + 1, THREE FEET ABOVE “GROUND rete Rongelap Island (3.5 roentgens per hour) Gross Fission Product Date sy + 34 YP + 34 yb + 300 Ye + 330 YU *30,000 = 75,000 + 600 Uo Cistern - Rongelap Islands + 600 Open Well " 0.5 90 D+2 Activity (d/m/m1) Location- + 600 Cistern " 1.3 n 5,500 n Openwell " 2,000 Cistern " 3 tt tt 4 t n 202 (With collapsed roof) Kabelle Island (19 roentgens per hour) D+ 330 48 Ground water Eniwetok Island (8.5 roentgens per hour) D + 330 oy) Cistern EnibukIsland (1.3 roentgens per hour) D + 600 Standing water from can, drum, etc. OFFICIAL USE ONLY 14

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