e Comparative evaluation of all of the ''cases'' to select the optimum one for the situation existing on Enewetak Atoll. As in many programs of this nature, a number of demands exist that are mutually contradictory. This leads, of course, to solutions which are less than perfect, but the most important consideration in choosing between alternatives has been the health and safety of the Enewetak people. 5.2 NONRADIOLOGICAL HAZARDS — The nonradiological hazards existing on the islands are of much lesser magnitude than the radioactive. Asa result, the procedures for removing and disposing of nonradiological hazards are much simpler and can be covered in relatively short order. 5.2.1 Physical Removal of Nonradioactive Materials The extent cf removal of nonradiological materials and structures from the islands provides several options. The debris that ceere-be removed includes dilapidated building, towers, antennas, concrete slabs, derelict boats, scrap metal, and other assorted rubble. Some of these constitute definite physical hazards. For example, buildings on the verge of collapse, loose and swinging cables, loose or torn sheet metal, exposed broken pipe ends, etc., have been noted in surveys of the islands. Structures such as concrete pits and open manholes constitute what could be considered attractive nuisances and would pose hazards, primarily to small children. Other material, such as concrete slabs are not especially hazardous, but may be obstructive and interfere with the proposed use of the land, for agriculture or residence. Finally, some of the debris is neither hazardous nor obstructive but simply unsightly. the rusting bow ofa freighter on the reef at Japtan. An example is Different levels of nonradiological cleanup are conveniently defined by differentiating among the structures and materials according to whether they provide physical hazard, obstruction to better land use, or detriment to environmental aesthetics. Three levels of activity are possible: e Level 1. No removal of any nonradiological scrap. e Level 2. Removal of physical hazards and obstructive structures and material. e Level 3. Same as Level 2 plus removal of unsightly debris. x