228 RADIOLOGICAL CLEANUP OF ENEWETAK ATOLL to the debris by WBCTdivers, and the debris was winched fromthe water areas. This method employed two 90-foot causeway sections joined to form a [80-foot floating platform, and a 12-I/2-ton crawler crane with a clamshell which was positioned on this floating platform (Figure 5-9). The platform was moved to the vicinity of the debris by Navy watercraft and anchored. WBCT divers located and marked the debris. Thereafter, the crane operator removed the debris from the water and placed it on the floating platform. In this method, approximately 200-300 cubic yards of debris could be loaded on the causeway, and the causeway then transported by a warping tug or LCM-8 to an authorized Jagoon dump site where the crane offloaded the debris. This method eliminated double and triple handling and was used extensively during the offshore cleanup of the island of Enewetak in August and September 1979. Extensive use of explosives was required in the disposal of debris. [t had been estimated that 219,297 pounds of various munitions would be required. However, 362,864 pounds were bought and stored in bunkers on Medren for use, and 345,050 pounds were actually used by Army and Navy demolition teams in the cleanup. Debris items which could not be collected and removed, such as concrete bunkers, were sealed or otherwise treated to eliminate hazards. These special procedures are described in subsequent sections covering the islands where such cleanup was required. FIGURE 5-9. FLOATING PLATFORM DEBRIS REMOVAL.