€ e OERCHHOEOHL Y Frank Cluff, Safety Advisory Group, NV DISPOSAL OF SCRAP MATERIAL AT BIKINI ATOLL + at. Prd WAY 12 1968 HR OS SUR Te + orGe tee + ee ce te mee In response to your request for consideration of proper disposal of convuninated scrap material for the Bikini cleanup operation, the following guidance is provided: Beckeround ~- Past radiological surveys and particularly the 1S67 survey icentified a number of locations among the islancs of Bikini Atoll having quentities of scrap material containing induced radio- activity. Such scrap locations ure described in the Health and Safety Laboratory report EHASL-1$0 entitled, "External Radiation Levels on Bikini Atoll - May, 1967," dated Decembcr, 1967. These locations, which are on islands near foruer testing sites, may be identified as: (a) the Aomen-Iroij Complex in the north-central part of the atoll, (b) the isiend of Nam and the blested bunker just west of Ham and Bravo Crater in the northwest part of the atoll, and (ce) an erea generally defined es the island of Enidrik and the western portion or the s€ronog-L.neman Cumpiex in the sauth contral part ov the ctoll. Aliso, the possibility cannot be ruled out that there may be some contaminated scrap on Bikini Island, as increased levels of radiation were observed there on a cable spool anc only a suall fraction of the area was checked duc to cense vegetation. Additionally, there ere three test facility locations in shallow water on the reef between the Aomen-Iroij Complex and Fam which were not monitored during the '67 survey and which should be checked for contaminated scrap. The Ad Hoe Committee established by AEC to evaluate the radiolozical huzards of resettlement of the Bikini Atoll recommended a number of measures one of which was that "Radioactive scrap should be removed from the islands adjacent to former shot sites." In discussions on the need for such renoval it was pointed out that this material is scrap metal containing incuced radioactivity and that natives collect and find use for all such materials. The serap is in the form of metal embedded in concrete, chunks of metal lying on top of the ground surface, and scraps of metal mixed with the top layers of sand and soil. It is not expected activity will make &G5* islands since Co and 13Tos, in that removal of the scrap containing induced radioany great reduction in radiation levels on the near there are quantities of radionuclides, primarily the top luyers of sand and soil of these islands.