.. . ,’ .’:3 ....’. -\ .’ ,- ., -2- AS an alternative program, at least 2 reef species are again collected from 5 Atoll locations and 5-10 pelagic spscics are collected sdnpl~s are also collected this tiiw, howevsr, from only 2 AtO~~s. !’!ater Concentration factors are conputed from in conjunction with the fish. the generated data and cortpareoto those a?ready available from Enewetak, Bikini and Kwajalein. Only v:aterneed be collected et the remaining Atolls. Nith the co?~putedco::centrationfactors, the average fish concentrations at the remaining Atolls czn be-assessed. This procedure yields about 180-?40 separate fish samples aridapproximately 100 water samples requiring analysis for ~57Cs, 9oSr anclplutonium. The analytical cost of this effort is nearer $150,000. In addition to cost, the latter tiethodinvolves less analytical sampling and shipping probiefisthan the all fish ceilecticn ~ethod. Any existing graundwater wells and cisterns should be sampled for the number of existing wells and cisterns would radionuclides. Klio~~ing help greatly in p-tanningfor this effort. Although it would be desirable to establish new wells, I fdel thatthe available time and support recuired for this effort would be insufficient to mount a more meaningful program. Terrestrial Progr,~m — If a dose as~essment is expecte( at the conclusion of the 13 Atoll Survey then soil and vegetation samplifigwill be required. The aer~al data will only give results for ga]~maemitters; we know from our experience at Bikini atidEnewetak that ‘OSr, a beta emitter, is one of the major contributors to the potenti~l dose $0 a population. I!et chemistry ~nalysis of soil and vegetation will also be required to evaluate the potential long term effects from Pu. Soil sampling will in fact be required to determine the depth distribution of gamma emitters in order to quantify md verify the aerial data. In additiCn, 90% of the total predicted dcses to”populations at Bikini and :newetak Atolls are due to ‘37CS and ‘“Sr ingested via the terrestrial focdchaifis.” In order to properly assess this exposure pathway soil profiles, surface soils and vegetation samples will have to be collected for a:~alysisof ~37Cs, “Sr and Pu to determine the potential raaionuclide uptake in subsistence crops. The degree to which soil and vegetation samples are collected at the various Atolls depends upon the tim and su?port ‘wktich will ha available at each Atoll. !Jithspecific inforriationon these two items a program could be cesigned which would be comparable with the time and support avai”iable. If on the averag~ 100 soil and ,soil profile sarples and 60 $ f,--,--+:.-sLi::J. . :J ‘1-:::re s27.73 ar,alysis t:.::, \u~L+(iblu3 coll~ctcd :; 2:::, /.::011 . .