2 roject Title: 13. Islands Regional Radiological Survey Publications: Greenhouse, N.A. and Miltenberger, &.P. Radiological analyses of Marshall Islands environmental samples from 1974 chrough 1976. 8NL Report 50796 in press. e Greenhouse, N.Aa. and Miltenberger, R.P. External radiation survey and dose prediccions for Rongelap, Utirik, Rongerix, Ailuk, and Wotje Acolls. 3NL Report 50797 in press. 14. Scone: —— (a) 200 Word Summary: A comprehensive external radiation survey program will be conducted on each of the approximately 13 atolls or islands in the Northern Marshall Islands which could have received tropospheric fallout from U.S. nuclear weapons tests in the Pacific. The surveys will provide "ground truch'’’ data on ambient external gamma radiation levels on-island. This daca will be used as the basis for calibration and normalization of aertal radioLogical monitoring by £.G.&G. Corporation. The program will include detailed @axtermal radiation measurements with pressurization chamber and scintillation survey instruments, and in situ zamma spectrometry on all islands of interesrc. Surface soil samples will oe collected and analyzed for significance gamma amitcers in order to make decay corractions for Long-term dose sredictions via the extarnal radiation exposure pathway. BNL field trip stati and analytical lab facilities will be available for other environmental samole collections and analyses as needed bv the overall sciencific program. 15. Relacionshin to Crher Proieccs: This program is directly related to our continuing eanvirenmencal and personnel nonitoring efforts under the 3NL Marshall Islands Radiological Safety Program. It wiil also interact cooperatively with related eflorts ac the University of Washington (LRE) and Lawrence Livermore Laboratory. 15. Technical Progress in FY 19793: Personnel and analytical laboratory resources will be mobilized in support or this program. If the regional survey begins on schedule, the first of the three survey legs should be completed by the end of FY 1978. ~d \ External Radiation Measurements and "Ground Truch'’ for Northern Marshall - =2xdected Resulss in FY 1979; The remaining two survey legs will be completed, daca analyzed, and a (See Continuacion Sheet)