handling of collected contaminated materials. A Public Health Service group, which is now part of the Enviromental Protection Agency, EPA, provided radiological assistance for cleanup of BikiniAtoll. Similar support should be sought from EPA for ee Enewetak Cleanup. Decontamination of YVONNE is seen as an iterative process, namely, i . See . b. removal of soil, monitoring of radioactivity levels, and removal of more soil. This amounts to a search for the higher plutontum* levels in soil with removal according to the guidance provided. ' The objecttves of the cleanup are two: Ce (1) pits Recovery of the pieces of plutonium that have been observed . on or near the Island surface. Some contain nilligran | ol quantities of plutonium metal and are easily detected with 7 field survey instruments such as the FIDLER. 2 . | (2) Recovery of plutonium contaminated soil. To a first ‘gpproxiination, the location of the zones of higher/Pucon- \ , . centrations are shown in the survey profile samples. od ff #K ego UE vt G d yr te Recoveryofplutonium in soil at concentrations greater than 400 pCi/g\ 239 240, at any depth these levels are found. The ~- justification is that PSee plutonium at some depth may daybe at BE one ONESAY OS BF the surface. ——————_————— Also, recovery of contaminated soll su tto . Bn te yep ag te ee The jus¥i#ichtion is’‘to keep air concentrations of resuspended plutonium to Jevels well within national and international . standards. After soil removal, all areas should be resurveyed ; to ensure no pieces or hot spots of plutonium remain. BEST AVAILABLE COPY " 239,240), reduce surface levels to a value well below 40 pCi/ _