approximately a factor of 20 less and locally mixed) at some small than the concentrations in the but finite rate, or that resuspended, Bikini cistern water. airborne, This assessment suggests that labeled soil particulates which accumulated on the roof either the radionuclides are being drainage surface between rains are leached from the concrete of subsequently washed into the the cisterns (which was locally derived cisterns. Eneu and Bikini Groundwater appears to be definitely potable; and The available chemical and radiological data for groundwater samples at FWR 1 on Eneu and HFH 1, HFH 5, from Eneu and Bikini islands, respec- and HFH 7, tively, are shown in Tables 4 and 2. acceptable for household and agri- ALl groundwater was filtered through cultural purposes, and for drinking a QO.4-um filter. entry, Thus, the table for example, for IST og refers to the quantity of the water is chemically if the taste can be tolerated. (Part.), Cs asso- that the water from HFH 7, Recall considered somewhat brackish by some western ciated with the particulate material standards, has been used for drinking held on a O.4-\m filter normalized in the past. to a Litre volume; refers The U.S. Public Health Service the BST. (Sol.) recommends to the quantity that passed through the filter with the water. Tt study of is not the purpose of to assess taining Cl, this exceeding, SO A? and dissolved solids respectively, 250, 250, and 500 mg/litre not be used if other the chemical quality the groundwater that drinking water con- for human consump- less mineralized supplies are tion but to make our chemical data available. available to the agency or group be emphasized that, according to responsible for such assessments. U.S. Public Health Service data, We can state, more than lOO public supplies in the however, that by U.S. . Public Health Standards, 1° the ground- (However, it should alsc U.S. provide water with more than water at FWR 2 and FWR 3 on Eneu and 2000 mg/litre of dissolved solids.) at HEH 3 on Bikini would be considered Newcomers and casual visitors would brackish; certainly find these waters almost and at HEH the water at FWR 4 on Eneu 2 and HEH 4 on intolerable, but many of the residents Bikini -li- OE 5c iga