416 ~~ RADIOLOGICAL CLEANUP OF ENEWETAK atoy, (Figure 8-10). These concentrations would have to be considered jp th layout and preparation of the worksite. However, it was planned that most of the areas with excessive readings would be bulldozed directly into the container area during thefinal soil cleanup and soil-cement operations or simply covered by the domeextension, depending on thetotal volumeof 0 soil to be contained. FIELD RADIATION SUPPORT TEAM (FRST) ACTIONS ON RUNIT Crater containment required extensive preparation of work sites for processing the contaminated material on the northern endofthe islang and construction of storage, maintenance, and administrative facilities on the southern end. Before this work could begin, meticulous radiological safety and control procedures had to be implemented. Shortly after p. Day, a temporary hotline was established at the boat landing by the FRST and the entire island was treated as a radiologically controlled area pending further identification of radiological contamination. A survey oftheErie event area indicated that some contamination was present butthat it was limited to a relatively low level, (Chapter 4). During the survey, contaminated debris found south of Station 1310 was removed and stockpiled on the northern end of the island. A permanent hotline was then established across the island from the lagoon to the oceanat Station 1310. No protective clothing was required south ofthis line after July 1977. however, the entire island of Runit was treated as a controlled island until the project was completed. In August 1977, the Radiological Safety Audit and Inspection Team (RSAIT), which was established by the Director, DNA to provide an independent review of radiological control and safety at frequent intervals, conductedits first inspection. A memberof the team, Dr. John Auxier of the Oak Ridge National Laboratory, recovered several plutonium contaminated fragments in the Fig-Quince area and took several samples of plutonium contaminated soil. Using some of the soil samples, he attempted to conducta test, in which known plutonium contaminatedsoil was purposely resuspended upwind of high-volume air samplers, to determine if an airborne plutonium hazard existed. He was unable to a ~ | complete the experiment during his visit because inclement weather damaged the air sampler filters. However, a member of the FRST, following Dr. Auxier’s instructions, completed the experiment in the following weeks. No significant levels of plutonium were detected on any of the filters which indicated that, in the Enewetak environment, there was no significant hazard from airborne plutonium. Based on results of these experiments and the RSAIT inspection, radiological protection measures were modified.34