any movement of ectivity into the fresh water lens and the remainder of the sacples were collected to evaluste the hazard from drinking the water. Gross beta activities on the above samples are presented in Table 2.7. The scarcity of potable water is demonstrated by the fev islands frou which cistern water vas obtaincble, Teble 2.7 Surary of Gross Beta Activity in Vater Bp"/uin/liter Ocean Water Island Lagoon Side Litiep RDA EDA & 330 Utirik Ronzelap 59 Lusch Eniactok Lataredj Enbelle 36 469 7,700 2,300 Eniwetok 190 Lenilal Eikor — 380 37 Ocean Sid2 EDA Cistern Sop Estica 12 2 1,350 6,, 300 16,000 UDA 260 23,00 56 &Q . well Darrel Tree Bole Fxposed Profile HDA 28 430 44,000 14,000 8,100 170 28 15,000 170 The ocean water data indieste thet activity is being weshed off of the islands. It will be noted also that the levels of activity correlate with the cacme dose rates of the islisnis. Such irrectulsrities es do occur can be attributed to the oceen current novesents around the islands. Leziilal, for exacple, ig in on expose] position end both lagoon and ocean side of the island are svept ty strong currents. The generally higher levels of ectivity on the lacoon side of the islands cen be explained by ct 72 Ba2 recsoning. Sinee the rainy cesson had ended at the tice the ssople wes collected the ectual mechonisa by which the active mterial was being moved vas propebly EsSictgtpa with the chanvins level of water line due to Gru 13