This Final Environmental Statement was prepared by the staff of the U. S. Nuclear Regulatory Commission and issued by the Commission 0ffice of Nuclear Material Safety and Safeguards. This action is administrative.
The proposed action is the issuance of a Source Material License to United Nuclear Corporation for the construction and operation of the proposed Morton Ranch Uranium Mill with a product (yellowcake) production limited to l,008,640 kg (2,400,000 lb) per year.
Summary of environmental impacts and adverse effects includes...
a) impacts to the area due to the operation of the Morton Ranch Uranium Mill will result in alterations of up to 110 ha (270 acres) that will be occupied by the mill facilities, tailings areas, and roads.
b) increase in the existing background radiation levels of the mill area as a result of continuous but small releases of uranium, radium, radon, and other radioactive materials, during construction and operation.
c) socioeconomic effects on the towns of Glenrock and Douglas, Wyoming, where the majority of mill workers will be housed during mill construction and operation.
d) solid waste material (tailings solids) from the mill will be produced at a rate of about 2000 tons (11.8 X l per kg) per day and will be deposited onsite in exhausted surface mine pits. The excess liquid portion of the tailings will be decanted and pumped to an onsite evaporation pond for disposa1. Surface water will not be affected by normal milling operations. Mill process water will be taken from mine sumps (at a rate of 390 gpm) and supplemented by recycling from the tailings disposal pits or evaporation pond.
e) there will be no discharge of liquid or solid effluents from the mill and tailings site. f) The discharge of pollutants to the air will be small and the effects negligible. The estimated total annual whole-body and organ dose commitments to individuals at the principal towns near the mill site are presented.
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