je “ye a: ep tee a a Bbeialt sided Ons o Jwaady ay - ly Lagoon sample collected 1220 7 April - Air sample collected 26 April The six drinking - 1.03 + 8 days 1.31 + 25 days a - 1 19 water samples from Rongelap indicated an average slope of -1.48 nr and a slope of -1.80 until last counted. Miscellaneous tasks assigned to the radiation analysis section included the analysis of urine samples for tritium content; examination of food, soil, and water samples obtained on a resurvey mission to Rongelap and Uterik; a study of the decay characteristics of con- 4.6.10 Conclusions and Recommendations 1. Conclusions The present maximum permissible exposure of 5.9 r per thirteen week test period is not a realistic MPE in con- ‘ediedisidDLRNEUTESA lac Zhe) Coe San sasbi2cHbDAMlbeefs wo sf SSSRdaaclk a. sideration of heavy work loads in extensively contaminat- ed areas. The use of waivers to cover exposures in excess of this MPE becomes a needless routine without much Bignificance when operations are conducted in large con- tamination areas without much interval between detona- tions. A large number of individuals did exceed 3.9 r but very few exceeded 6.0 r. b. The utilization of project personnel as monitors proved itself withfew exceptions. - Procurement and clearance of personnel must be accomplished at least four months in advance of operations in order that selection and training can be completed and in order that the unit can be completely assembled prior to move- ment overseas, 2. Recommendations a, Test MPE should be based on calendar quarters of 3.9 1r and should consider the preparatory phases as well as CopledsDOE LANL, J-Dlv. 125 ww t uate taminating material on vans being shipped to the United States; and wal: of water samples obtained during a water survey following cn event.