soe northwest quadrant. West tip of Aomon (Sally) entries reflect results for the land mass created between Eleleron (Ruby) and Aomon (Sally) by the Pacific Area Createring Experiment (PACE) tests. (Ursula) are preliminary. Results for Lojwa With the exception of the Biliae (Wilma) 606 results, the percent difference between the two types of means for a given island and isotope does not exceed 16 percent. the most part it is less. than 7 percent. In fact, for The Billae (Wilma) 60¢5 means reflect the difference expected when a Significant number of the measurement results are less than the MDA and the maximum observed is not significantly higher. | In our calculations of the external dose due to }3’cs and 6065, we have used the meen values based on the actuel measurement results for the islands Enjebi (Janet) through Billae (Wilma). For Aomon (Sally) we have weighted the mean results for Aomon (Sally) and Aomon (Sally) west tip according to their respective areas: approxi- mately 40 hectares for Aomon (Sally) and approximately 3.4 hectares for Aomon (Sally) west tip. .In the case of the southem islands, Jinedrol (Alvin) through Kidrenen (Keith), we have used the results reported in reference 1 (pg. 501): 0.2 R/éh for M37es and 0.1 R/h for 606,, Decayed from 1973 to 1979, the externel exposure rates for 137o5 and 606 among the southern islands are currently estimated at 0,174 and 0.0454 R/h, respectively. To convert from exposure rates to dose rates, a factor of 6.24 mrem/y per uR/h was used. Beta doses have been measured on Enjebi Bokombako (Belle) Island at Enewetak Atoll.? (Janet) Island and The measurements were made at 1 meter height using thermoluminescent Dosimeters (TLD's) with - Os a0 ]] - i 1°} }: . . Lc toi var i | pts 4 mw~ al . 1.