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APPENDIX D: ANNUAL DATA FOR PHASES ASSOCIATED WITH THE MANAGEMENT OF MATERIALS

This appendix contains the annual data used to calculate 10-year impacts from the various alternatives (see Chapter 4). Most of the alternatives would involve the use of multiple facilities and sequential steps to achieve the primary objective (i.e., stabilization or a form that satisfied program requirements). DOE estimated the annual impacts that could occur for each step or "phase" of each alternative. DOE then estimated durations for each phase of each alternative to generate the 10-year data.

This EIS uses the following generic names for the phases to facilitate the presentation of data, even though the different alternatives would involve different activities and facilities.

• Existing Storage: Actions associated with storing the material in its present form and configuration.
• Characterization: Actions that would be necessary to prepare the material for conversion, including visual inspection, weighing, and chemical and radioactive analysis. The characterization of the material would be needed to determine the implementation of proper processing technique(s).
• Conversion: Actions associated with changing the physical or chemical form of the material (i.e., liquid to solid). This typically would involve transfer of the material to a chemical processing facility and operation of the facility.
• Interim Storage: For some alternatives, the initial conversion or processing would not complete the stabilization process. Additional steps could be required, such as special packaging or further separations operations. Interim storage would include actions associated with storing the material in preparation for the next phase.
• Additional Conversion: Any additional actions necessary to place the material in a suitable form for continued storage, such as heating or repackaging solid forms of plutonium.
• PackaginRepackaging: Actions necessary to place the suitable material form into an acceptable storage configuration, such as treatment in the Actinide Packaging Facility or repackaging.
• Post-Stabilization Storage: Actions associated with the material after it had been placed in a configuration and facility suitable for an extended storage period.

Table D-1 presents general information on actions associated with the phases for the alternatives that DOE considered for each material. In this table, "NA" indicates that a phase does not apply to an alternative.

The description of alternatives in Chapter 2 presents the projected durations for "active" phases (i.e., phases that would not involve storage) for the stabilization alternatives. For some alternatives, the latter phases are not likely to be completed by the end of the 10-year period analyzed in this EIS. For a few alternatives, the latter phases would not start within the 10-year period. Chapter 4 presents the impacts estimated for the next 10 years for various combinations of alternatives. To ensure a complete analysis, Tables D-2 through D-44 present the estimated annual impacts for each phase of every alternative, even though some are not likely to occur within the 10-year period. In general, the highest annual data are related to the conversion phase, because this phase would involve the transfer of the nuclear material and the operation of major facilities. The values for post-stabilization storage are generally less than those for existing storage, reflecting changes in material properties or storage configuration.