a 24 Debris Cleanup So KICKAPOO LAGOON FIGURE 5-20. AOMON GROUND ZEROS. acceptance of the island was not completed until 28 September 1978.¢ Seven hundred and twenty-eight cubic yards of contaminated debris an 2,186 cubic yards of noncontaminated debris were removed.®3 The EIS Case 3 cleanup mission required that plutonium be remove from three burial crypts on Aomon. Cleanup of the crypt on the causewa between Aomon and Bijire was primarily a soil cleanup effort and described in Chapter 7. The other two were concrete blocks located nei the Yuma and Kickapoo ground zeroes and bearing brass plaque identifying them as crypts. Research indicated that they were tower base which had been covered with clean concrete to coat their contaminate surfaces. After intense discussion among DOE, USAE, and the JTG Jregarding color coding and disposition, the blocks were broken up b explosive demolition under the personal supervision of the Assistant J-: Captain Nathan S. Mathewson, USA. They were found to have onl weapon fuel plating on the previously exposed surfaces. Verylittle of th material was actually in yellow condition (the great majority being green However, because it was associated with a ground zero and had bee marked as a contaminated material burial site, it was coded yellow an disposed of in the lagoon.§4 During the cleanup of the Kickapoo ground zero area, DOE personn discovered several rock-like fragments which contained amounts « plutonium on the order of a few microcuries. They were similar to sorr found on Runit. This contamination was not enoughto cause the area | exceed the 40 picocuries per gram of soil criterion. However, tt