||Superfund record of decision : Homestake Mining, NM : first remedial action - final.
||United States. Environmental Protection Agency.
|| U.S. Environmental Protection Agency, Office of Emergency and Remedial Response ; Reproduced by National Technical Information Service,
Hazardous waste sites--New Mexico.
Hazardous materials ;
Waste disposal ;
Site surveys ;
Water pollution ;
Ground water ;
Water supply ;
Record of Decision ;
First Remedial Action ;
Cibola County(New Mexico)
||Some EPA libraries have a fiche copy filed under the call number shown.
The Homestake Mining Company (HMC) site consists of a uranium processing mill and two tailings embankments in Cibola County, New Mexico, about 6 miles north of Milan. The tailings embankments contain a combined total of 22 million tons of tailings material covering 225 acres. Four housing subdivisions are south and southwest of the mill with the nearest residence approximately 0.6 miles from the tailings embankments. In 1983 elevated levels of selenium were found in offsite ground water prompting EPA to require HMC, under a consent agreement, to supply municipal water to residents in the subdivision south of the mill. The restoration program continued to operate and has been largely successful in onsite containment of tailings seepage. EPA has determined that the uranium mill and tailings embankments at the site are not contributing significantly to offsite subdivision radon contamination and that it does not have authority under CERCLA to address radon levels due to natural soil concentrations.
"09/27/89." "PB90-178526." "EPA/ROD/R06-89/050." "Office of Emergency and Remedial Response."