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U.S. Department of Energy
Office of Scientific and Technical Information

Hydrology and water-quality monitoring considerations, Jackpile uranium mine, northwestern New Mexico

Book ·
OSTI ID:6897960

The Jackpile Uranium Mine, which is on the Pueblo of Laguna in northwestern New Mexico was operated from 1953 to 1980. The small storage coefficients determined from three aquifer tests indicate that the Jackpile sandstone is a confined hydrologic system throughout much of the mine area. Sediment from the Rio Paguate has nearly filled the Paguate Reservoir near Laguna since its construction in 1940. The mean concentrations of uranium, Ra-226, and other trace elements generally were less than permissible limits established in national drinking water regulations or New Mexico State groundwater regulations. No individual surface water samples collected upstream from the mine contained concentrations of Ra-226 in excess of the permissible limits. Ra-226 concentrations in many individual samples collected from the Rio Paguate from near the mouth of the Rio Moquino to the sampling sites along the down-stream reach of the Rio Paguate, however, exceeded the recommended permissible concentration of Ra-226 for public drinking water supplies. After reclamation, most of the shallow groundwater probably will discharge to the natural stream channels draining the mine area. Groundwater quality may be monitored as: (1) Limited monitoring, in which only the change in water quality is determined as the groundwater flows from the mine; or (2) thorough monitoring, in which specific sources of possible contaminants are described.

OSTI ID:
6897960
Country of Publication:
United States
Language:
English