overriding influence of highly radioactive particles, these results are probably acceptable. VEGETATION ANALYSIS PROBLEMS LASL-H7 was asked to prepare a series of large vegetation samples for the purpose of checking the preparation procedure used by LFE and the analytical methods used by contributing laboratories for Pu. Am, and U analyses. In designing such a program, several problems have been encountered. Details of the problems were presented to the NAEG in the hope that a method which best suits the needs of the group will be indicated. PROFILE SAMPLING Over the several years that the NAEG has been in existence, a large number of soil profile samples have been collected and analyzed. LASL-H/ has submitted a synopsis of a paper analyzing profile data for presentation at the IAEA Symposium on Transuranics in the Environment in November. The paper will present a discussion of the profile data, attempting to explain noted irregularities and to discuss observations in relation to (1) rooting depth of local vegetation, habitats, (3) surface redistribution by wind, ical activities, (2) burrowing animal water, and other mechan- (4} leaching of radionuclides to various depths, and (5) decontamination and cleanup procedures. The NAEG purpose of collecting profile samples from the intensive study sites was to determine the depth to which Pu had migrated. This information was used to establish a "surface sample" size (0-5 em) and to determine whether significant downward movement of Pu had occurred. The information was used in inventory calculations for the 23