Engineering assessment of inactive uranium mill tailings: New and Old Rifle sites, Rifle, Colorado

The New and Old Rifle sites were reevaluated in order to revise the October 1977 engineering assessment of the problems resulting from the existence of radioactive uranium mill tailings at Rifle, Colorado. This evaluation has included the preparation of topographic maps, the performance of core drillings and radiometric measurements sufficient to determine areas and volumes of tailings and radiation exposures of individuals and nearby populations, the investigations of site hydrology and meteorology, and the evaluaton and costing of alternative remedial actions