344 RADIOLOGICAL CLEANUP OF ENEWETAK ATOLL In August 1978, the Bair Committee visited the atoll and was askeg guidance on several matters, including the stringency of the 40-89. or pCi/g criteria for residential, agricultural, and food-gathering islands Th Bair Committee responded that every effort must be expended to reach canno these levels and that only after it is clearly shown that theselevels be reached should a reconsideration be made.!3.!4 t DOE-ERSP extracted soil samples from the Easy and X-Ray GZ areas on northwest Enjebi (Figure 7-8). Some 740 samples were taken from the sidewalls of trenches dug by backhoes to a depth of 120 centimeters (4 feet). On 30 September 1978, DOE-ERSP reported that the two areas had subsurface transuranics greater than 160 pCi/g, thereby exceeding Fielg Command’s Operations Plan (OPLAN) Condition D. It was estimateg that 1,300 cubic yards of soil would have to be removed to a depth of approximately 100 centimeters (3.3 feet). 15 ENJEBI SOIL REMOVAL CONTINUES On 3-6 October 1978, the Deputy Director, DNA, Major Genera Richard N. Cody, USAF, reviewed Enjebi soil cleanup operations at the atoll and decided to continue cleanup to 40 pCi/g surface levels Approximately 12,621 cubic yards of soil above 45 pCi/g were removeg between 24 August and 21 October 1978. A fine grid (25 meters) IMP survey in early November 1978 revealed new areas requiring excision, even though 50-meter grid IMP data and Statistical analysis had indicated, with 70 percent confidence, that such excision would not be required. This increase amountedto approximately 5,200 cubic yards. In addition, 29 areas over 40 pCi/g were identified. Soi removal operations continued with another 17,694 cubic yardsofsoil being removed from these locations to reduce surface contamination from 45 to 40 pCi/g. In addition, 2,600 cubic yards were removed from subsurface areas to bring them to less than 160 pCi/g. A total of 52,187 cubic yards of soil had been removed from theisland when the Enjebi cleanup forces were redeployed on 2! April 1979, having completed all but the LLL tree farm and plowing experiment (Plow-X)areas. !6.17.18 A weeklater, DOE-ERSP notified the CJTG that the Plow-X area could be cleaned. Soil cleanup in the Plow-X area was completed on 9 May 1979, resulting in the removal of another 820 cubic yards. This completed the Enjebi soil cleanup operation. Photographs of Enjebi before and after cleanup operations are at Figures 7-12, and 7-13. The final DOE-ERSP certificate indicated that, based on one-quarter hectare averaging, 97 percent of the island was less than 40 pCi/g (surface condition). A few areas, well distributed over the island, exceeded 40 pCi/g, but none |