290 RADIOLOGICAL CLEANUP OF ENEWETAK ATOLL AREA RESURVEY After each 6-inch cut, additional soil samples were taken and analyzeq and the area was resurveyed byin situ van (Figure 6-8). If the resuns exceeded the desired limit, additional cuts were made until the limit was achieved. The initial goal on Aomon was to remove concentrations to below 40 pCi/g. For most of the Aomon areas excised, one cut was sufficient to lower the contamination to acceptable limits. Subsurface contamination in the Kickapoo area was found to be fa, more extensive than the preliminary ERSP survey had predicted. It was impossible to determine whether it had been there previously or had been mixed in from the surface by the soil removal equipment. Extensive subsurface samples were taken before the secondlift to see which was the case.65 Analysis of the samples indicated significant subsurface contamination throughout the area except wherethefirst lift had removeg the surface contamination. Therefore, the initial subsurface characterization had to have been inaccurate, probably because it was based on too few samples. The solution was to take more subsurface samples.66 a. ARTES Once a determination was made that areas were within acceptablelimits, the IMP surveyedall routes to the beach stockpile. Upon removal from the FIGURE 6-8. RESURVEY OPERATION.