Site
The Maybell Disposal Site is actually two sites. The primary site is located on a former mill that processed uranium ore between 1957 and 1964. Trace Elements Corporation established the facility in 1955 and managed the site until Union Carbide Corporation (now Umetco) assumed control in 1957. Remedial action began in 1995, and disposal cell construction was completed in 1998. Located in an area that contains several abandoned mines, groundwater—located from 35 to 300 feet below the Maybell Site—holds elevated levels of arsenic, cadmium, lead, uranium, selenium, and molybdenum.
Center for Land Use Interpretation, Maybell Disposal Cell #2, 17 May 2012, CLUI Land Use Database
Umetco Minerals Corporation constructed and operated heap leach cells at the Maybell West Site from 1975 through 1982. During operations, low-grade uranium ore mined from local pits was placed into heap leach cells constructed from 35- to 55-foot-high berm; sulfuric acid leached the materials to extract uranium deposits, which were collected by a drain system and then concentrated. Reclamation and decommissioning of the site began in 1995 and was completed in 2005. Over 1,970,000 tons of mine tailings have been stabilized at the Maybell West site.
Sources
U.S. Department of Energy, Office of Legacy Management.
"Maybell, Colorado, Disposal Site" Fact Sheet. May 2020. Accessed July 31, 2020.
U.S. Department of Energy, Office of Legacy Management.
"Maybell West, Colorado, Disposal Site" Fact Sheet. May 2020. Accessed July 31, 2020.
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