neposirorny 1° UC/ FAO ”” comection oo DEEL TO corm2 F LAER FF /6 rowan GEN come, FY (979 of Advisory Group for’ td TF e SK Review OTT ten. s ose Cetpy *F October 6, 1978 a. oo “h ee tate tit PR erin oe _ Mr. Hal Hollister nN, | fiobre ene hl ite Ce. for Ck Dem TO ryof,“°/2 4 Northwest Laborato {Boulevard d, Washington 99352 Teleph@ne (509} Telex32-6345 A pom ygLe Rae jofoghs Director, Division of Operationat ~:~ and Environmental Safety Department of Energy Dear Hal: Se DRA FIT: sQFue + |, ret| Tr”stoMemb 710 Fal. Washington, D.C. iAL rs 2. : yes 20545 | | AOS B06 _ The Northern Marshall Islands Advisory Group met on October 3-4, 1978 to consider the issue of planting coconuts on Enewetak Atoll, recommend cleanup guidance for subsurface contamination, discuss the Enjebi experimental farm, review preliminary results of the plowing experiment and be briefed by Tommy McCraw on the status of the Northern Marshall Islands Survey. The Advisory Group offers the following comments: 1. Planting of Coconut Trees on Northern Islands of Enewetak 2. A final decision concerning the permissible degree of occupancy of the northern islands can be made only after conclusion. of the present cleanup effort and after requisition of additional information on applicable living habits and Food chains and the movement of radionuclides (particularly 2°Sr and }37Cs) through these food chains. Pending this evaluation it would be unfortunate if steps were taken that would encourage the Enewetak people to believe that a decision had already been made, This is particularly cogent in view of the unfortunate experience at Bikini. That experience suggests that coconuts © grown on the northern islands might not be suitable for human consumption and might not be suitable for copra production. To plant coconut trees on the northern islands at this time might, therefore, require their early future destruction, which would have unfortunate public relations repercussion. Alternatively it might require restricting their consumption, which the Bikini experience would indicate to be ineffective. Cleanup Guidance for Subsurface Contamination In some situations, such as those with the subsurface contamination at Boken and Enjebi, it is not appropriate to apply a generic plan such as the operation plan. Instead, in situations as well defined as these, it is better to rely on judgments specific to these situations. We would, therefore, recommend that the identified pockets of contamination on Boken be removed and that the contamination on Enjebi be left, unless © further definition of the subsurface pockets indicate pockets exceeding 160 pCi/gm. Consideration should be given to removal of the asphalt under the soil on Enjebi so that vegetation will grow. p ao BEST COPY AVAILABLE The Advisory Group concurs with the letter of September 9 to. Vice Admiral R. R. Monroe from L. J. Deal.