NEVADA APPLIED ECOLOGY GROUP SOILS ELEMENT ACTIVITIES FOR PERIOD JULY 1, 1974, TO MAY 1, 1975 E. H. Essington and E. B. Fowler Los Alamos Scientific Laboratory ABSTRACT During the period July 1, 1974, to May 1, 1975, LASL-H?7 conducted assigned referee activities for the Nevada Applied Ecology Group (NAEG) Soils Element. Soil and vegetation samples were analyzed for various radionuclides, a tentative procedure for the analysis of uranium isotopes by alpha spectrometry was developed, and a review of the soil profile analyses for the intensive study sites was conducted. Recommendations regarding acquisition of additional data on profile sampling points are made. SOILS ELEMENT ACTIVITIES During this reporting period, LASL-H7 personnel have been working in four project areas: Analysis of NAEG soil and vegetation samples. Development of a procedure to determine U isotopes in soil and vegetation by alpha spectrometry. 3, Interlaboratory cross-calibration. Preparation of papers for various meetings, and attendance at workshops. 17