A aries, more ors steep eeagptgt a January 10, 1973 Dr. ‘N. F. Barr Assistant Director for Measurenent = aad Evaluation, DBER RESPONSE TO DIRECTIVE (HVO-121)-1972 ENIWETOK ATOLL RADIOLOGICAL SURVEY nods I share your desire that Rediclogical Assesement Review by LLL produce a thorough and coaplete report. I plan to attend the meeting on January 16, 1973 and have attempted to update the October 4, 1972 pianning operations with recent status reports. The differences between what was planned and what was carried eut msy be significant. They may, however, merely be details in the survey execution and the three objectives will still be able to be expedited. are to: Those objectives (1) locate contamination; (2) radiological hazards fron the 3. ‘ ~ meclear test debris and (3) evaluate the external end internal (food chain) dose to man from these radionsclides. “ on DEER's responsibilities according to NVOO (RB. Ray) are to assess the ; radiological implications of sources of radiation both direct (external). ‘\- and internal via the food chain transfer. ‘These implications must be - - a evaluated for each food chain and fer each type of radionuclide, e.g., = = alpha enitters, fission or newtrom activation products. These cadie-~ nuckide concentrations should be assessed from all media such as air, foods, and water. As the LLL lead is Dan Wilson, I feel confideat that these areas will have the “sppropriate” samples collected ic order to properly evaluate the environment for the radiation dose te man. This itemized list should be available at this meeting. | The techniques of processing these samples are the next critical areas of concern. In analyses of water, pumping large volumes (A/2000L) through reduction sorption BAWL gear is ao substitute for collection filtering, acidification, return to the lab end then scavenge the radicelemesats fron selutioa by iron hydroxide mes cE oe yO