Descriptors: B CODES; DECOMMISSIONING; DECONTAMINATION; Broader Terms: CLEANING; COMPUTER CODES; MASS TRANSFER; MATHEMATICAL MODELS MATHEMATICS Subject Categories: 510300* -- Environment, Terrestrial -- Radioactive Materials Monitoring & Transport -- (-1989) INIS Subject Categories: B31* -- Land 10/5/914 00597111 (Item 614 from file: 103) ERA-05-012506; , INS-80-004701; EDB-80-036634 Title: Some statistical aspects of the cleanup of Enewetak Atoll Author(s): Barnes, M.G.; Giacomini, J.J.; Friesen, H.N.; Davis, Prairie, R.R.; Truett, T. (comps.) Affiliation: Desert Research Inst., Las Vegas, Title: 1978 DOE Statistical Symposium Corporate Source: Sandia Labs., Albuquerque, Lab., TN (USA) NV NM (USA) Oak Ridge National Conference Title: 4. DOE statistical symposium Conference Location: Albuquerque, NM, USA Conference Date: Publication Date: Jul 1979 Pp 296-324 Report Number(s): CONF-781108- Document Type: Analytic of a Report; Language: English Journal Announcement: EDB8003 H.T.; Conference literature; 1 Nov 1978 Numerical data Availability: Dep. NTIS, PC Al5/MF AOQl. Subfile: INS (US Atomindex input); ERA (Energy Research Abstracts); TIC (Technical Information Center). Country of Origin: United States Country of Publication: United States Abstract: Cleaning up the radionuclide contamination at Enewetak Atoll has involved a number of statistical design problems. Theoretical considerations led to choosing a grid sampling pattern; practical problems sometimes lead to resampling on a finer grid. Other problems associated with using grids have been both physical and statistical. The standard sampling system is an in situ intrinsic gamma detector which measures americium concentration. The cleanup guidelines include plutonium concentration, so additional sampling of soil is required to establish Pu/Am ratios. The soil sampling design included both guidelines for location of the samples and also a special pattern of subsamples making up composite samples. The large variance of the soil, sample results makes comparison between the two types difficult anyway, but this is compounded by vegetation attenuation of the in situ readings, soil disturbance influences, and differences in devegetation methods. The constraints inherent in doing what amounts to a research and development project, on a limited budget of time and money, in a field engineering environment are also considered. ; ODD-EVEN NUCLEI; RADIOISOTOPES PLUTONIUM ISOTOPES; RADIOISOTOPES; YEARS LIVING Subject Categories: 510301* -- Environment, Terrestrial -- Radioactive Materials Monitoring & Transport -- Soil -- (-1987) INIS Subject Categories: B31* -- Land 10/5/915 (Item 615 from file: 103) 00591544 INS-80-003786; EDB-80-031067 Title: Spatial relationship of 1l-meter equatorial spread-F irregularities and depletions in total electron content Author(s): Tsunoda, R.T.; Towle, D.M. Affiliation: SRI International, Menlo Park, Source: Geophys. Res. Lett. (United States) CA 94025 v 6:11. Coden: GPRLA 9004933 Major Descriptors: *AMERICIUM 241 -- RADIATION MONITORING; *ENIWETOK -DECONTAMINATION; *PLUTONIUM 239 -- RADIATION MONITORING; *RADIATION MONITORING -- STATISTICS; *SAMPLING -- STATISTICS; *SOILS -RADIOACTIVITY; *SOILS -- SAMPLING . Descriptors: EXPERIMENTAL DATA; ISOLATED VALUES Broader Terms: ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; AMERICIUM ISOTOPES; CLEANING; DATA; DATA FORMS; EVEN-ODD NUCLEI; HEAVY NUCLEI; INFORMATION; ISLANDS; ISOTOPES; MARSHALL ISLANDS; MATHEMATICS; MICRONESIA; MONITORING; NUCLEI; NUMERICAL DATA; OCEANIA;