OFFICIAL USEONLY = 411482 mY 12 4h Frank—Cluff, Safety Advisory Group, NV DISPOSAL OF SCRAP MATERIAL AT BIKINI ATOLL ==| In respoose to your request for consideration of proper disy;oer#nal of contaminated scrap material for the Bikini cleanup operation, the following guidance is provided: Background ~ Past radiological surveys and particularly the LG6T survey identified a number of locations amonzt the ioelsancs of Bikint Atoll having quantities of scrap material containing induced rudioactivity. Such scrap locations are described in the Health and safety Laboratory report HASL-190 entitled, “External Radiation Levels on Bikini Atoll - May, 1967," dated December, 1967. These locations, which are on islunds near former testing Gites, may be identified mac (a) the Aomen-Iroij Complex in the north-centri:l part of the atoll, (vo) the island of Nam and the blasted bunker just west of Nwa und Bravo Crater in the northwest part of the atoll, and (c) an aren generally defined as the island of Enidrtk and the western portion of the Aerokoj-Eneman Co.uplex in the south central part of the utoll. Also, the possibility cannot be ruled out that there may be sone contaminated scrap on Bikini Island, es increased levels of radiution were observed there on a cable spool and only a small fraction of the area was checked due to dense vegetation. Additionally, there ure three test facility locations in shallow water on the reef between the Aamen-Lroitj Complex and Nam which were not monitored during the '67 survey and which should be checked for contaminated scrap. The Ad Hoc Committee established by AEC to evnluate the radiolosical huzurda of resettlement of the Bikini Atoll recommemicd a number of measures one of which was that "Radioactive sacrup should be rewoved from the islancs adjacent to farmer shot sites." In discussions on thet need for such renoval it was pointed out that this mitcrinl ts ecrap metal containing induced radioactivity and that natives collect and find use for all auch materiale. The scrap is in the forn of metul empedcded in concrete, chunks of metal lying on to; of the round curface, and scrapa of metal mixed with the top layers of gand and uoll. Tt 16 not expected that removal of the scrap containing tiduced radio} activity will sake any great reduction in radiation levels on the near boar te t6*ance since there are quantities of radionuclides, primarily l3ics, in the top layera of gand and soil of these islands. OFFICIAL USE ONLY BEST COPY AVAILABLE