Debris Cleanup 229 DEBRIS TRANSPORT Debris identified for disposal by crater containment or lagoon dumping was transported to the disposal sites by various modes depending on access channels, beach trafficability, and available resources. The transport procedures evolved as experience was gained (Figure 5-10). The earliest method used wasto transport loaded 20-ton dump trucks to disposal sites on either LCM-8s and/or LCUs(landing craft, utility). The 20-ton trucks (average capacity 10 cubic yards) were loaded at the beach stockpiles, driven onto an LCM-8 (one per boat) or LCU (six per boat), and transported to the disposal site. Red debris was offloaded at Runit by dumping the contents into trenches prepared to stockpile contaminated debris. Yellow and green debris were offloaded by two 12-1/2-ton cranes aboard a barge anchored at the lagoon disposal site (Figure 5-Il). This method was very hard on the trucks and was extremely time-consuming for the relatively small amounts of debris moved. When islands were inaccessible to naval craft, the debris trucks were loaded on the LARC-LXsand transported to the lagoon dump sites or to Runit as appropriate. The LARC-LX could transport only one 20-ton truck per trip. This method was also very time-consuming. A bulk-haul method using LCM-8 landing craft was developed to transport debris to lagoon disposal sites. The LCM-8 decks and bulkheads were lined with heavy lumber. Debris was loaded into the boats directly from dump trucks or by bucket loaders from beach stockpiles. The boats were offloaded by the barge-mounted cranesat the dump sites. An average of 30 cubic yards per trip could be moved by this method, which was used extensively during the cleanup of Enjebi. A second bulk-haul method employed an LCU landingcraft containing a plate steel box which originally had been designed to haul contaminated soil. A 20-foot section was cut from oneside of the box, and the deck was covered with heavy lumber (Figure 5-12). The boat was loaded either by direct dumping from the trucks or with loaders. The loaders remained on board and were used for offloading the LCU at the lagoon dump site (Figure 5-13). This method permitted the transportation of approximately 100 cubic yards of debris per trip. It was used for the first time on Enjebi. Loading/offloading by this method took approximately 2 hours for each operation. The third bulk-haul method of transporting debris utilized a YC-type barge. This procedure was used only on Enewetak and Medren islands, which had access for naval craft to a pier from which loading could be accomplished. The barge was modified with four 3-foot-high steel walls around the outside edge to contain the debris. Barge capacity was 300 to 500 cubic yards depending on configuration of the debris. Debris was