UNITED STATES 411575 ATOMIC ENERGY COMMISSION WASHINGTON, D.C. 20545 JUN 6 7973 Roger Ray, Assistant Manager Office of Assistant Manager for Operations Nevada Operations Office INFORMATION ON RADIONUCLIDE CONTENT OF AIR AND GROUND WATER AT ENIWETOK ATOLL The recent review last month of progress in analysis of samples from Eniwetok Atoll indicated there may not be sufficient information to answer all questions regarding levels of radioactivity in air and in ground water. Ideally, air filter sample data should be available for all seasons and weather conditions. The recent survey obtained only a few days of data. Obviously, needed information can only be obtained by an extended sampling period covering many months. The Eniwetok representatives have indicated that the six “big islands" are pussivie oiies (LoL irfesi water weiis for arinking purposes. Tn- formation will be needed for all islands where there is even a remote chance of use of ground water by returning natives. Ground water samples should be analyzed for all key radionuclides including tritium. In our telephone conversation Monday, June 4, you indicated there may be possibilities for obtaining needed samples when the status of the PACE project is settled. We will appreciate your assistance in filling this gap in the survey data. Assistant Director for lealth Protection vision of Operational Safety cc: N. Barr, BER /W. Gay, MA R. D. Maxwell, EA G. Facer, MA . W.-Nervik, NV . ‘DoF thy tory Divison REPOSITORY —_ ™ —_ coutection SS 376 bowny WME Crow Sebdt 132¢ cc BOXNo. =. FOLDER Redislss cel Sure