ensfoe for hin of disposal operations are summarized in , Table 5These estimates were based on considerations of material quantities, methods of preparation, and transportation distances. Assuming the work will be started in late 1975, these estimates reflect 1976 prices. 7 . i Major factors influencing the costs in the ocean dumping and Conus disposal options are material preparation and transportation distance. In the crater disposal option, the contaminated materials are left on Runit. Transportation requirements are minimal for this option and no particular preparation of materials is required. Material preparation is a major factor in the crater entombment option, although transportation requirements are minimal. The option calling for stockpiling of contaminated materials on Runit is a temporary measure, and ultimately involves the cost of one of the other options. Material quantities vary strongly among the different cases for soil that is removed, but is constant among cases for radioactive scrap. Measured estimates of these quantities are tabulated as follows (Engineering Study, .1973): Case } 2 “3 4 5 Contaminated Soil (cu yds) Contaminated Scrap (cu yds) 79, 000 7,262 73,000 7, 262 126, 000 ae ee 318, 000 7,262 779, 000 Noncontaminated Scrap (cu yds) 58, 000 80, 000 Asummary of t Leteanup physical details and costs for each island is given in Table 5-¥. The physical details include the acreage, the radioactivity levels, the plutonium concentrations, the columns of radioactive, nonradioactive, and cosmetic debris. Estimated costs are shown Ney Al theo eo for debrushing, scraping, replacing soil, and removing radioactive and nonradioactive debris. Costs for disposal are not included; these’are tabulated in Table 5-1}. - 4s 5-42