Some of our general recommendations on this subject continue as follows: a. The Pu-contaminated areas in Nevada should continue to be used for much needed research. Fencing only should be seriously considered as the accepted control measure for the most highly contaminated areas. The environmental consequences of plowing followed by oiling of the Great Basin ecosystems seem to be relatively mild after 18 years. Research on feasibility and costs for this procedure should be undertaken after experimental work in done to ascertain the true effects of plowing and oiling on revegetation. This should be done before any large areas are plowed if deemed necessary. Feasibility of developing small microcatchment basins to concentrate moisture for plant revegetation after land has been scraped should be studied further before any large areas are denuded. Various procedures for growing plants can be used. It should be possible to develop close to a dry-farm procedure for revegetation on most of the land areas under investigation. Extensive and intensive studies should be made on uses of, effect of, and the physics and chemistry of road oil stabilization of the NTS soil since it appears that road oil is a highly useful and relatively inexpensive material to decrease resuspension. Studies should be made of partial cleanup procedures which would leave from 50 to 100 perennial plants per acre, preferably grasses, reasonably undisturbed. Soil stabilization studies should be made of the soil which is disturbed. Seed collection, germination studies, and plant propagation trials should be intensified. Reasonable facilities for this work should be developed at the Nevada Test Site. Alternate methods of seeding should be evaluated in revegetation programs. Alternate means of soil stabilization should be investigated together with their impact on plant and animal activity. CONCLUSIONS Test areas in Nevada that have been contaminated with sufficient 739Pu to cause serious consideration of some cleanup procedures should continue to be studied. The potential hazards, if any, are not yet fully understood, nor have the best methods for decontamination and land reclamation been determined. The total area where the surface contamination level is above, roughly, 73