The total number of NAEG intensive-study area aliquots which have been prepared for radiological analysis as of March 1975 is soil aliquots, 2,662; vegetation aliquots, 1,214; small animal tissues, 327; and large animal samples, 337. During March, REECo personnel supported a dry run for large animal sample preparation at the NAEG hot sample (high-level radioactivity) facility at NRDS, Jackass Flats. The dry run, performed under an NAEG contract to LFE, consisted of performing sample preparation on large animal tissue and bone samples. Cobalt-60 tracer was used in the dissolution and ashing process to check radioactivity handling and processing procedures. The two major objectives were to determine what preparation problems might develop under different laboratory and equipment conditions, and to determine health physics measures necessary to prevent radioactive contamination of personnel and equipment. As a result of the dry run, protocols are being developed for the preparation at the hot sample facility of large animal samples containing transuranics. Considerable REECo effort has been expended on the NAEG data bank. The culmination of some of this effort is indicated by the NAEG intensive-study area data printout, distributed to NAEG element managers and investigators during this period. FUTURE PLANS Plans for REECo support activities for Fiscal Year 1976 include the following: 1. At least 12 trips to the TTR are anticipated for collection of small animals, soil, vegetation, and for resuspension studies. 2, On-NTS activity is expected to be of a larger magnitude than in the past. Primary support activity will be the sample prepara- tion and/or shipment of about 2,000 large animal samples. 162