1173 April 1875: Preliminary survey of Bikin' and Enec Islends condocted jointis br University of Washington aud Brookharep National Labora torr for ERDA Sereening surrer of erterna! redistion levels and collection of some soll and vegetation samples in See \VO0-26-2' apd BNL O79 preperation for a major survey Later thie reer. June J975: A major One grid surver of Bikini and Eneu Island external ra distion levels was conducted br Lawrence Livermore Laboratory for ERDA with pérrticipetio: br acientists from EPA. University of Weshingion. Brookhaven Natione] Labora. tors. and ERDA. Also semples of soi}, plants apnimats. and cistern and ground water were collected, April }976: A surver of external radiaHion jevels on Nam Island, the 3a larges: islend af Bikini Atoll. conducted br Brookbaver Nationa) Lab orstorr for ERDA. September 187G. Conduct of eg joint surver of 5 Atolls including Bikini hy Universitr of Weshington end Broohheter Nations) Laboratorr for ERDA Survered erterne!? redistios levels and collected environmental samples. April 1077: Bite visite by Brookheren Nationa) Leboratory to plan inetalletior of windmill powered air mam. vling stations Bikici Atoli one of four sites fur iong-term air sampling Work supperted br ERDA. October 1877: Brookharen National Laboratory {nstalled wind-powered lopg-term air sempling statio: Bikicj IJsisod. Work snpported DOE Exposure rates on Bikini Islend higbis variable Eneu Island dase rates Jower thar. Bikini cistern. water on both inland: is acceptalde for drinkivge Some well wate; acceptable. other wells upscceptalile for drinking. See UCRL—-S287). S1&87%@ Bev. 1, 539173 Pio. 6217 Si87S Part 2 SI8To Pari 3, 5147¢ P..5. NVO-236%- 32 ‘and BNL SOim: To be published To be published Bite identifed. agreemen: obtsined Dats po: yet avaliable. op by Ins.vs Counting and Cringe Berocency Saompling—Bekini Atoll Bemplsng ‘Cowntinr: Year 1870': 18717: 1972': over 19737: Pooled orine collected, anglrzed for Sr-90. Ce.137, and Pu-23% Pooled arine collected analyzed for Sr-80. C137. and Pu-23g, 240 Pooled urine eollected Ce-187 copcentration sbows factor of 4 Increo~+ 197G. Sr-00 increese ie factor of 2. Cs-137 In urine higher then 1870 by factor of about 10. Sr-9 increase is factor of 4. April 18t4': First ip viva counting of Ce-137 in Bikini residents Cr-137 urine Taeluet about sate as 1973. Br-OC Jevele down pear 197¢ values Pu-23¢. 24: higber than 1971 br factor of about 5.‘ Apri: 1975: Po-23t 240 higher tbac 187] by factor of 16. Fall 1076: Pu-238, 240 bigber than 1971 bs factor of 2.'Cr.137 urine talue-~ TEesults from several sorveys podliabedc ip one report Br-OC and Ce-lf? are dominant in (be Cerresiria! eocvircomenp!, Oc apd FeSt ip marine exvirormer! and Am-24) anc Pr act _24c are [eo portaot ic eofle Eactoactivity on Birin’ Ato! bas decliped getlificaptls faut log em. Gfereat indiridcals al Mikeren( timer ar people come abd go at Bikic! actans Be BRL W474 Rep: 1075 ‘Thee resolts suspect. samples fn 2305 of Pa 90115149 may have den coptamicetec etter it m-eaturemect