P| ‘K UNIT7 - J, D, Servis, Maj, USA IOLOGICA A (J. D. Servis) MP 22-s0t0 Survey Summary A partiel Rad-Safe survey was conducted on day with incomplete atoll results. Results of this survey Table TU-7-2), indicated no extensive recontamination of rhe atoll except within the Bokobyaadaa - Wamu chain. An oreseen fallout of radioactive material less than 5 sicrons in size did occur on the night of R4+1. 3 This fali- | “ut covered the atoll and raised radiation levels by apcroximately 100 mr/hr. Because of the late period of fall- “mut this radiation level would have corresponded to 3.5 r/hr llout at H¢#2 hours, | This fallout, because of small ‘marticle size, wes much more difficult to decontaminate than ang "che macroscopic particles of Becondary fall out levelled off between 0700~0800, Residual top-side levels on ships were: Ainsworth - ur/hr, Estes - 12 mr/hr, and Beiroko ~- 30 mr/hr, Naximun 2tvels were 20 mr/hr to 45 mr/hr. _ te / «# . Lagoon contamination covered the western quarter et the lagoon with levels comparable to that of aa Lagoon z*. Telughing through the southwest passage materially increased S<-sAekground radiation levels in the vicinity of Ourukeen, i-vdkoaetokutoku, and Bokororyurnu. BEST AVAILABLE COPY - CTP tirte TR 7 442. |