James L. Liverman -2- niin pitty me & _. tye bard LLL has proposed, conceptually, an air sampling program which, ideally, would start very soon (before cleanup mobilization) and extend well into the cleanup. The data of the early months should indicate whether a program extending throughout the cleanup would be justified. A very ''ball-park'' estimate for such a program is $300K. Since we are unaware of any action on the above-cited Recommendation No. 11, and since funds for it are not available in either NV's or LLL's financial plan, we seek your guidance in this matter. A related matter gives me even more immediate concern. That is the apparent disparity between this proposed Enewetak effort and the much more limited effort we have made to understand resuspension at Bikini. We have to date but limited knowledge of Bikini alr mass loading and virtually no data on seasonal variations, Yet at Bikini we have by now on the or cf 100 full time residéiits and anothers 50 due shortly. The recent indication of apparently elevated Pu level in Bikini urine samples should lend even more urgency to our efforts to investigate this question. A long-term air sampling program at Bikini would be difficult to mount and support, but given the requisite resources it can be done. For logistic reasons the cost per sampler will be higher than costs at Enewetak. However, in view of other life style restrictions on the Bikinians, a geographically more modest program may suffice for the time being. Again, because no funds are available at NV for Bikini resuspension studies, your guidance is requested. Mahlon E. Manager gummy 50) 1807 Gates