1983-06-03_REVISION - M1977285 (2)

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43.70(c) (c) A charge of $250,000 (1978 dollars) or more, if demonstrated as • necessary by the Agency, shall be paid into the Radiation and Perpetual Care Fund to cover the costa of long-term care and mainte- nance. The total charge shall be paid prior to the termination of a License. With Agency approval, the charge may be paid in install- ments. The total or unpaid portion of the charge shall be covered during the term of the license by additional security meeting the requirements of 43.60(b). (d) The requirements of 43.70 shall apply only to those sites whose owner- ship is subject to being transferred to the State or the Federal government. 43.90 Technical Requirements (a) Tailings and waste handling and disposal systems shall be designed to accommodate full-capacity production over the lifetime of the facility. When later expansion of systems or operations may be likely, capability of the disposal system to be modified to accommo- date increased quantities without degradation in long-term stability and other performance factors shall be evaluated. (b) In selecting among alternative tailings disposal sites or judging the adequacy of existing tailings sites, the following site features which would assure meeting the broad objective of isolating the tailings and associated contaminants without ongoing active maintenance shall be • considered: (1) remoteness from populated areas; (2) hydrogeologic and other environmental conditions conducive to continued immobilization and isolation of contaminants from usable groundwater sources; and (3) potential for minimizing erosion, disturbance, and dispersion by natural forces over the long term. (c) The applicant's environmental report shall evaluate alternative sites and disposal methods and shall consider disposal of tailings by place- ment below grade. Where full below grade burial is not practicable, the size of retention structures, and size and steepness of slopes associated with exposed embankments shall be minimized by excavation to the maximum extent reasonably achievable or appropriate given the geologic and hydrologic conditions at a site. (d) The following site and design requirements shall be adhered to whether tailings or wastes are disposed of above or below grade: (1) the upstream rainfall catchment areas must be minimized to decrease erosion potential by flooding which could erode or wash out sections of the tailings disposal area; . (2) the topographic features shall provide good wind protection; 43 - 15 (April 1990)